WO2016093531A1 - Electromagnetic driving gas discharging apparatus - Google Patents

Abstract

The present invention provides an electromagnetic driving gas discharging apparatus comprising: an electromagnetic type driving unit for generating vibration on the basis of an inputted electrical signal; a vibration unit connected to the driving unit, and vibrating according to a movement of the driving unit so as to generate a flow of gas; and a housing unit having the driving unit and the vibration unit provided therein, and discharging, through an opening, the flow of gas generated by the vibration unit, wherein the housing unit comprises a first chamber located at the upper part of the vibration unit and a second chamber located at the lower part of the vibration unit, each of the first and second chambers has at least one opening provided at one surface thereof, the opening of the first chamber and the opening of the second chamber are alternately arranged with respect to the horizontal direction of the housing unit, and the opening of the first chamber is symmetrically arranged with respect to the horizontal direction of the housing unit.

Description

Electromagnetic driven gas blowing device

The present invention relates to an electromagnetic drive gas ejection apparatus, and more particularly, to an electromagnetic drive gas ejection apparatus capable of cooling an external device by ejecting a flow of gas generated through vibration of a vibrator through an opening.

In general, electronic equipment often generates heat during operation. In particular, among the components constituting the electronic equipment, the central processing unit (CPU), the graphics processing unit (GPU), the display panel for outputting memory and image information, and the power supply, which are manufactured by highly integrated circuits, and the power supply are very large Generates positive heat

The application of high temperature heat to electronic components can cause thermal damage and cause malfunctions. Therefore, most electronic products have their own cooling devices.

The most representative cooling system is a cooler using a heat sink and a fan. Depending on the type of electronic component, the heat sink and cooling fan may be used together. Among these, the fan cooler generates a flow of gas through a rotating fan, and lowers the temperature of the electronic component by cooling the surface of the electronic component in which the gas flow is exothermic.

As described above, the fan cooler includes a fan for flowing gas, and essentially includes a motor for rotating the fan. In order to have high cooling performance, such a fan cooler needs to have a large fan size and a high fan rotation speed. That is, in order to use the fan cooler as a cooling device, a space equal to the size of the fan is required. In addition, the fan cooler system may generate noise when the fan and the motor rotate. Electronics with fan cooler cooling can be difficult to use in quiet environments. The weight and periodic vibrations of the fan and motor are also noted as a drawback of the fan cooler method.

The present invention has been made to solve the above problems, and has an object to provide a gas blowing device that takes up less space and is free of noise and vibration.

In addition, the present invention also has an object to provide a gas blowing device for effectively generating a gas flow.

Electromagnetic drive gas blowing device of the present invention for solving the above problems, the electromagnetic drive unit for generating a vibration based on the input electrical signal; A vibration unit connected to the driving unit and vibrating according to the movement of the driving unit to generate a flow of gas; And a housing part provided inside the driving part and the vibrating part, for ejecting a flow of gas generated by the vibrating part through an opening part, wherein the housing part comprises: a first chamber positioned above the vibrating part; The first chamber and the second chamber may include at least one opening on one side, respectively, the opening of the first chamber and the opening of the second chamber May be alternately disposed with respect to the horizontal direction of the housing part, and the opening of the first chamber may be symmetrically disposed with respect to the horizontal direction of the housing part.

The opening of the second chamber may be symmetrically disposed with respect to the horizontal direction of the housing part.

The first chamber has one opening, the second chamber has two openings, and the opening of the first chamber is within a predetermined left and right distance range from a centerline with respect to the horizontal length of the one side. The first opening of the second chamber is located in an area within a preset distance range from the left end of the one side, the second opening of the second chamber is a preset distance range from the right end of the one side It may be characterized in that it is located within the area.

The opening may have a width of 1 mm or more and 35 mm or less, and a height of 0.2 mm or more and 6 mm or less.

The opening may have an area of 25 mm ² or less.

The opening may be rectangular.

The drive unit, a permanent magnet; A coil disposed adjacent to the permanent magnet and connected to the vibrator; And a yoke for forming a magnetic path penetrating the inside and the outside of the coil.

The yoke, the upper yoke in the form of a disc; And a lower yoke having a ring-shaped sidewall portion coupled to the lower portion of the disc shape and the upper portion of the lower portion, wherein the permanent magnet is disposed between the upper yoke and the lower yoke. have.

In addition, a ring-shaped gap may be formed between the inner side surface of the ring-shaped side wall portion of the yoke and the side surface of the upper yoke, and the coil may be formed in the gap.

The driving unit may be characterized by vibrating the vibrating unit at 55 Hz or more and 85 Hz or less.

The vibrator includes at least one wrinkle part provided in a concentric shape on the surface of the vibration part based on the center point of the vibration part, and the wrinkle part prevents the vibration part from bending in an irregular shape when the vibration part is vibrated up and down. It may be characterized by.

Displacement of the vibration generated in the vibration unit may be characterized in that less than 0.9mm in the upper side and the lower side than the neutral state.

The vibrating portion may include a disc having a diameter of 25 mm or more and 75 mm or less, and the thickness of the disc may be 0.02 or more and 0.1 mm or less.

According to another aspect of the invention, in the controller for controlling the electromagnetic drive gas blowing device, the electromagnetic drive gas blowing device, the vibrating portion moves up and down by the vibration generated in the drive portion, by the vertical movement of the vibrating portion The flow of generated gas is ejected through at least two openings alternately arranged with respect to the horizontal direction of the housing part, the openings being symmetrically arranged with respect to the horizontal direction of the housing part, and the controller is configured to provide the electromagnetic drive gas blowing device. A power driver for generating a sine wave for driving the driver of the driving unit and receiving the output signal again to generate a sine wave; And a phase delay unit configured to delay a phase of an electrical signal by a specific phase, wherein the power driver may include an amplifier, and the electrical signal output from the power driver passes through the phase delay unit, and the phase delay is performed. The electrical signal passing through the negative input to the negative input terminal of the amplifier provides a controller.

The phase delay unit may include one or more circuits in which a capacitor and a resistor are connected in series.

When there are a plurality of circuits, the plurality of circuits may be connected in series with a capacitor and in parallel with a resistor.

According to another aspect of the present invention, in the controller for controlling the electromagnetic drive gas blowing device, the electromagnetic drive gas blowing device, the vibrating portion moves up and down by the vibration generated in the drive portion, and the up and down movement of the vibrating portion The flow of gas generated by the gas is ejected through at least two openings alternately arranged with respect to the horizontal direction of the housing portion, the openings are symmetrically arranged with respect to the horizontal direction of the housing portion, and the controller is configured to eject the electromagnetic drive gas. A power driver for generating a sinusoidal wave for driving the driving unit of the apparatus and generating a sinusoidal wave by receiving an output signal again; A phase delay unit for delaying a phase of the electrical signal by a specific phase; And an output controller configured to adjust an amplitude of an output signal of the power driver, wherein the power driver may include a first amplifier and a second amplifier, wherein the first amplifier generates a first output signal. And re-input the first output signal passing through the phase delay unit to the negative input terminal, and the second amplifier generates the second output signal by receiving the first output signal through the negative input terminal. The first resistor is connected between the output terminal of the first amplifier and the negative input terminal of the second amplifier, and the second resistor is connected between the negative input terminal and the output terminal of the second amplifier, and by the ratio of the two resistors The second output signal is inverted and amplified by the first output signal, and the output control unit receives the first output signal and the second output signal and adjusts the voltages of the two output signals. Providing a controller that features a.

The phase delay unit may include: a first circuit in which a third resistor and a first capacitor are connected in series; And a second circuit in which a fourth resistor and a second capacitor are connected in parallel, wherein the first circuit operates as a high pass filter, and the second circuit is a low pass filter. It can be characterized in that the operating in).

According to the present invention, it is possible to provide a gas blowing device having a small size, reduced noise and vibration, thereby effectively cooling the external heat radiating device.

In addition, according to the embodiment of the present invention, it is possible to minimize the interference between the flow of the gas ejected from each opening.

In addition, according to an embodiment of the present invention, it is possible to prevent the problem of distortion of the vibration unit.

1 is an exploded view of a gas blowing device according to an embodiment of the present invention.

2 is a cross-sectional view of a gas blowing device according to an embodiment of the present invention.

3 is a cross-sectional view of a driving unit according to an embodiment of the present invention.

4 is a view showing the operating principle of the drive unit according to an embodiment of the present invention.

5 is a view showing a state in which the flow of gas in accordance with the up and down vibration of the vibration unit according to an embodiment of the present invention.

6 is a view showing an embodiment of the arrangement of the openings provided on the side of the housing portion.

7 is a view illustrating various embodiments of an arrangement relationship of respective openings provided on the side of the housing part.

8 is a view showing another embodiment of the arrangement of the openings provided on the side of the housing part.

9 is a diagram illustrating various embodiments of an arrangement relationship of respective openings provided in a plurality of side surfaces of the housing part.

10 is a view showing the size and shape of the opening.

11 is a circuit diagram of a controller according to an embodiment of the present invention.

12 is a circuit diagram of a controller according to another embodiment of the present invention.

13 is a circuit diagram of a controller according to another embodiment of the present invention.

The present invention relates to an electromagnetic driven gas ejection device capable of cooling an external device by ejecting a flow of gas generated through vibration of a vibrator through an opening. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded view of a gas blowing device 100 according to an embodiment of the present invention.

According to FIG. 1, the gas ejection apparatus 100 according to the exemplary embodiment of the present invention may include a driving unit 120, a vibrating unit 140, and a housing unit 160.

The driver 120 may generate a vibration based on the input electrical signal. The driver 120 may be provided in various ways, but preferably, may be implemented in an electromagnetic manner that generates kinetic energy from the interaction between the magnetic field and the electrical signal.

According to FIG. 1, the driving unit 120 may include a permanent magnet 122, a coil 124, and a yoke 126, 128. The structure and operating principle of the driving unit 120 will be described in detail with reference to FIGS. 3 to 4.

The vibrator 140 may be connected to the driving unit 120 and may vibrate according to the movement of the driving unit 120 to generate a gas flow. Preferably, the vibrator 140 may be connected to the coil 124 of the driving unit 120 and may vibrate together when the coil 124 is vibrated up and down. As the vibrator 140 vibrates up and down, a flow of gas may be generated. Therefore, the vibration unit may be provided in a thin film form for smooth vibration.

According to FIG. 1, the vibrator 140 is represented in the form of a disk, but is not limited thereto. In addition, the vibrator 140 may be provided in the form of various polygons and irregular shapes. The vibrator 140 may be provided in another form according to the shape of the inner space of the housing 160.

The flow of gas caused by the vertical motion of the vibrator 140 will be described in detail with reference to FIG. 5.

The housing unit 160 may include the driving unit 120 and the vibrating unit 140 therein. The gas may be generated by the vertical movement of the vibration unit 140, and the gas may be ejected through the openings 163, 164a, and 164b provided on the side surfaces.

According to FIG. 1, the housing 160 may seal the internal space through the cover 166, and gas may be ejected or introduced through the openings 163, 164a, and 164b. In addition, according to FIG. 1, the inner space of the housing 160 is expressed as having a flat cylindrical shape, but is not limited thereto and may be configured in various forms.

The gas ejection apparatus 100 according to an embodiment of the present invention generates a flow of gas by discharging or sucking gas inside and outside the gas ejection apparatus 100, and applies the generated gas flow to another heat dissipation device provided outside. This aims to lower the temperature of the heat dissipation device. As described above, the gas inside and outside the housing 160 is ejected or introduced through the openings 163, 164a, and 164b, and the mutual interference between the flows of the gas passing through the openings 163, 164a, and 164b. By minimizing the above, the above object can be effectively achieved. The arrangement relationship, size, and shape of the openings 163, 164a, and 164b for this purpose will be described in detail with reference to FIGS. 6 to 8.

On the other hand, the housing unit 160 may further include a support (168a, 168b, 168c, 168d) formed so that the upper layer and the lower side of the housing unit 160 is spaced apart by a predetermined distance or more on the surface of the other device. Accordingly, the housing unit 160 can avoid the interference problem with the circuit and the like provided on the surface of the other device. In FIG. 1, four supports 168a, 168b, 168c, and 168d are represented, but the present invention is not limited thereto and may be configured in various numbers and forms.

2 is a cross-sectional view of a gas blowing device 100 according to an embodiment of the present invention. 2 illustrates a cross-sectional view of the driving unit 120, the vibrating unit 140, and the housing unit 160, and the support of the housing unit 160 of FIG. 1 is omitted in the drawing. In addition, the cover 166 of FIG. 1 is also omitted in FIG. 2, and a portion corresponding to the cover is represented as being sealed by an upper surface of the housing part 160. In the following drawings, the support and the cover of the housing portion are omitted.

According to FIG. 2, the driving unit 120 may be installed below the central portion of the inner space of the housing 160. However, the present invention is not limited thereto, and the plurality of driving units 120 may be disposed inside the housing unit 160 to apply vibration to the vibrating unit 140. The vibrator 140 may be connected to an upper side of the driver 120. Preferably, the lower surface of the vibrator 140 may be connected to an upper portion of the coil 124 that moves up and down based on the direction and intensity of the electric signal flowing among the components of the driver 120. Accordingly, the vibrator 140 may vibrate in the same direction as the coil 124 when the coil 124 moves up and down. However, the connection relationship between the vibrator 140 and the coil 124 is not limited thereto. The housing 160 may be divided into the first chamber 161 and the second chamber 162 by the vibrator 140. That is, the housing 160 may include a first chamber 161 positioned above the vibrator 140 and a second chamber 162 positioned below the vibrator 140. The edge portion of the vibrator 140 may be connected to an inner side surface of the housing 160 to prevent the gas in the first chamber 161 and the gas in the second chamber 162 from flowing to each other.

The first chamber 161 and the second chamber 162 may include at least one opening 163 and 164 on one side thereof. The openings 163 and 164 may be provided on different sides of the housing part 160, but preferably, the openings 163 and 164 may be provided on the same side of the housing part 160 to concentrate the flow of gas in one direction. . Accordingly, the first chamber 161 may eject or enter gas through the upper opening 163, and the second chamber 162 may eject or enter gas through the lower opening 164. Since the openings 163 and 164 according to the present invention are alternately disposed with respect to the horizontal direction of the housing part 160, the opening 163 of the first chamber and the opening 164 of the second chamber are on the same cross section. It may not exist. Therefore, in FIG. 2, the opening 164 of the second chamber is indicated by a dotted line.

As described above, the vibrator 140 may be provided in a thin film form, and may vibrate up and down according to the movement of the coil 124 of the driver 120. That is, the vibrator 140 is the overall shape is changed by the external force transmitted through the coil 124. If the shape of the vibrator 140 changes in a different form every time it moves up and down, irregular curvature may be generated on the surface of the vibrator 140, and a force is concentrated on a specific part. There is a risk of tearing. These problems may reduce the life of the vibrator 140. In order to prepare for this, the vibrator 140 may include at least one wrinkle part 142 provided in the shape of a concentric circle based on the center point of the vibrator 140. When the vibrator 140 is vibrated up and down by the driving unit 120, the wrinkles 142 may be unfolded or shrunk to be bent into an irregular shape.

According to FIG. 2, the pleats 142 of the vibrator 140 are provided to protrude upward, but are not limited thereto, and may be configured to protrude downward. In addition, a plurality of wrinkles may be continuously connected to the vibrator 140 to be disposed on the surface.

On the other hand, the vibrator 140 may be provided with a disc having a diameter of 25mm or more and 75mm or less, the thickness of the disc may be configured to 0.02 or more and 0.1mm or less. Preferably, the vibrator 140 may be made of a polymer material having a diameter of 45 mm and a thickness of 0.038 mm, but is not limited thereto.

3 is a cross-sectional view of the driving unit (120a, 120b) according to an embodiment of the present invention. As described above, the drivers 120a and 120b may be implemented in an electromagnetic manner that generates kinetic energy from the interaction between the magnetic field and the electrical signal. The drivers 120a and 120b are illustrated in FIGS. Although it may be implemented in the form of each embodiment shown in b), the shape of the driving unit is not limited to the configuration shown in FIG.

According to FIG. 3A, the driving unit 120a may include a permanent magnet 122a having a cylindrical shape, a coil 124a wound around a conductor in a ring shape, and a yoke, among which the yoke is an upper yoke 128a. And a yoke 126a. The lower yoke 126a may be formed in a shape in which the lower portion of the disc shape and the ring-shaped sidewall portion provided on the upper portion of the lower portion are combined. The upper yoke 128a may be provided in a disc shape. Here, when expressing the shape of each component of the drive unit 120a, it is described that each component has a form of a cylinder, a disc, and a ring, but is not limited thereto.

In order to configure the driver 120a, the permanent magnet 122a may be installed at the center of the lower yoke 126a, and the upper yoke 128a may be installed at the upper portion of the permanent magnet 122a. The yoke serves as a passage through which the magnetic force lines generated by the permanent magnets 122a pass, and induces the flow of the magnetic force lines generated by the permanent magnets 122a. At this time, an air gap e of a ring shape may be formed between the inner surface of the ring-shaped sidewall of the lower yoke 126a and the side surface of the upper yoke 128a. The coil 124a may be installed in the air gap e, and a magnetic path formed between the upper yoke 128a and the lower yoke 126a may penetrate the coil 124a. The correlation between the permanent magnet 122a, the coil 124a, the yokes 126a and 128a and the magnetic path will be described in more detail when FIG. 4 is described. An upper portion of the coil 124a may be connected to a lower surface of a vibrator (not shown), and as the coil 124a moves up and down, the vibrator may also vibrate in the same direction.

Referring to FIG. 3B, the driving unit 120b may include a ring-shaped permanent magnet 122b, a coil 124b wound around a conductor in a ring shape, and a yoke, among which the yoke is an upper yoke 128b. And a yoke 126b. The lower yoke 126b may be formed in a shape in which the lower portion of the disc shape and the central portion of the cylindrical shape provided on the upper portion of the lower portion are combined. The upper yoke 128b may be provided in a ring shape. As in the case of Figure 3 (a), when expressing the shape of each component of the drive unit 120b has been described that each component has the form of a cylinder, a disk and a ring, but is not limited thereto.

In order to configure the driving unit 120b, the permanent magnet 122b may be installed above the edge of the lower yoke 126b, and the upper yoke 128b may be installed above the permanent magnet 122b. At this time, a ring-shaped gap e may be formed between the side surface of the central portion of the lower yoke 126b and the inner surface of the upper yoke 128b. The coil 124b may be installed in the gap e, and as in the case of FIG. 3A, the coil 124b may influence the magnetic path formed between the upper yoke 128b and the lower yoke 126b. I can receive it. The upper portion of the coil 124b may be connected to the lower surface of the vibrator (not shown), and as the coil 124b moves up and down, the vibrator may also vibrate in the same direction.

The driving unit 120a of FIG. 3 (a) and the driving unit 120b of FIG. 3 (b) show differences in the shape of each yoke and the shape of the permanent magnet, and the shape of each component is an electromagnetic drive according to the present invention. It can be freely selected when implementing a gas blowing device.

Although the structure of each embodiment of the driving units 120a and 120b has been described with reference to FIG. 3, the structure of the driving unit is not limited thereto.

4 is a view showing the operating principle of the drive unit 120 according to an embodiment of the present invention. Since the driving unit 120 of FIG. 4 is the same as the driving unit 120a of FIG. 3A, detailed descriptions of each component are omitted.

According to FIG. 4A, the N pole of the permanent magnet 122 may face upward, the N pole direction of the permanent magnet 122 is connected to the upper yoke 128, and the S pole direction of the lower yoke 126. It can be connected with. Since the yokes 126 and 128 serve as passages of the magnetic force lines, most of the magnetic force lines generated by the permanent magnets 122 may flow in the direction indicated by the dotted lines in FIG. In this case, the yokes 126 and 128 may be made of cast steel or cast iron, but the material of the yoke is not limited thereto. The path of the entire magnetic force line may be implemented in a donut shape in three-dimensional space, and may have a circulation structure that rises upward in the center portion and descends downward in the edge portion. Magnetic field lines formed between the upper yoke 128 and the lower yoke 126 may penetrate the coil 124. The direction of the line of magnetic force traveling from the upper yoke 128 to the lower yoke 126 is varied depending on the positions of the voids e1 and e2. Referring to the cross-sectional view of FIG. 4A, the traveling direction of the magnetic field lines in the left gap e1 is formed to the left side, and the traveling direction of the magnetic field lines in the right gap e2 is formed to the right side.

4 (b) and 4 (c) show the advancing direction of the current and the advancing direction of the magnetic force line and the moving direction of the coil 124 in the respective voids e1 and e2. For convenience of description, the x-axis, y-axis and z-axis are shown in each drawing.

In FIG. 4, the direction in which the current flows is illustrated by a thin solid line and an arrow. In FIG. 4, current flows along the coil 124 wound in a counterclockwise direction at the time of the plan view. Accordingly, in FIG. 4B, the current proceeds in the positive direction of the x-axis. As described above, in the left gap e1, the direction of the magnetic field lines is formed in the left direction, that is, in the negative direction of the y axis. At this time, the coil 124, which is the conductive wire, may receive a force to move in a specific direction by Fleming's left hand rule. In FIG. 4 (b), the coil 124 is connected to the Fleming's left hand rule. It moves downward in the negative direction of the z axis. On the other hand, in Fig. 4 (c), since the current proceeds in the negative direction of the x-axis, the magnetic force line proceeds in the positive direction of the y-axis, the coil 124 is moved in the negative direction of the z-axis by Fleming's left hand law. 4 (b) and 4 (c), if the current flows in the opposite direction, in both cases a force is generated to move the coil 124 in the positive direction of the z-axis. That is, regardless of the positions of the voids e1 and e2, the entire coil 124 moves upward or downward in the same direction depending on the direction of the current flowing through the coil 124.

In Fleming's left hand law, the direction of movement of the coil 124 is determined by the direction of travel of the magnetic field lines and the direction in which current flows. According to FIG. 4, since the permanent magnet 122 may be fixed at a predetermined position, the movement of the coil 124 is determined according to the direction and magnitude of the current flowing through the coil 124. The driver 120 may be provided to receive a sinusoidal electric signal whose amplitude and sign are periodically changed from a controller to be described later so that the corresponding electric signal flows through the coil 124. Through this, the coil 124 of the driving unit 120 may be periodically vibrated according to the magnitude and sign of the sinusoidal electric signal. The coil 122 of the driving unit 120 may be vibrated at 55 Hz or more and 85 Hz or less, and preferably, may be vibrated at 65 Hz or more and 75 Hz or less. As the coil 124 of the driver 120 is vibrated by the frequency of the frequency, the vibration unit 140 connected to the coil 124 may also be vibrated at the same frequency.

5 is a view showing a state in which the flow of gas in accordance with the up and down vibration of the vibration unit 140 according to an embodiment of the present invention. In FIG. 5, the dashed-dotted line crossing the housing unit 160 horizontally indicates the position of the vibrator 140 when the vibrator 140 is in a neutral state, and the broken arrow indicates the movement of the vibrator 140. Directional, solid arrows indicate gas flow. In FIG. 5, wrinkles of the driving unit 120 and the vibrating unit 140 are omitted. Also, as in the case of FIG. 2, since the opening 163 of the first chamber and the opening 164 of the second chamber may not exist on the same cross section, the opening 164 of the second chamber has been treated with a dotted line. .

As described above, the edge portion of the vibrator 140 is connected to the inner side surface of the housing 160 to prevent the gas in the first chamber 161 and the gas in the second chamber 162 from flowing through each other. can do. In addition, the vibrator 140 vibrates up and down in the same manner according to the vertical movement of the coil of the drive unit. When the vibrator 140 vibrates up and down like this, a flow of gas may be generated around the vibrator 140 according to the movement of the vibrator 140. FIG. 5A illustrates a state in which the vibrator 140 is refracted upward by the driving unit 120. When the vibrator 140 is refracted upward, the gas of the first chamber 161 is blown out through the opening 163 of the first chamber, which is an outlet. When the vibrator 140 is refracted upward, gas is introduced into the second chamber 162 from the outside through the opening 164 of the second chamber because the air pressure is lowered. On the contrary, when the vibrator 140 is refracted downward as shown in FIG. 5A, since the air pressure is lowered in the interior of the first chamber 161, gas is introduced from the outside through the opening 163 of the first chamber. The gas in the second chamber 162 is blown out through the opening 164 of the second chamber. That is, whenever the vibrator 140 vibrates up and down, the direction of the flow of gas passing through the opening 163 of the first chamber and the opening 164 of the second chamber may be reversed. The flow of gas generated through the above process can effectively cool the heat of the surface of the external heat dissipation device.

The intensity of the flow of gas generated by the vibrator 140 may be determined by the vibration frequency and amplitude of the vibrator 140. The vibrator 140 may generate a strong gas flow through a large amplitude and a high vibration frequency. However, in this case, the vibration unit 140 may generate unwanted noise by the user, and there is a fear that a high load is applied to the driving unit. Preferably, the amplitude generated from the vibration unit 140 may be provided to be 0.9mm or less in the upper side and the lower side compared to the neutral state. Through this, the vibrator 140 may generate less noise and generate a flow of gas capable of sufficiently cooling the external heat dissipation device while having a low load of the driving unit.

On the other hand, since the flow of the gas passing through the opening 163 of the first chamber and the flow of the gas passing through the opening 164 of the second chamber are in opposite directions, the flow of each gas is reduced by reducing the interference between the flows of the respective gases. Flow losses must be minimized. To this end, the openings 163 and 164 of each chamber should be appropriately arranged to reduce the interference between the flows of the respective gases.

FIG. 6 is a view illustrating an embodiment of the arrangement of the openings 163, 164a, and 164b provided on the side surface of the housing 160. In FIG. 6, the dashed-dotted line indicates a horizontal center line of the side surface of the housing part 160, and w denotes a horizontal width of the side surface of the housing part 160. In addition, d1 denotes a first distance, d2 denotes a second distance, z1 denotes a first interval, z2 denotes a second interval, and z3 denotes a third interval. Each section is indicated by a dotted line in FIG. In FIG. 6, the number of openings and the number of openings are expressed as three, but is not limited thereto.

According to FIG. 6, the first chamber positioned above the vibrator may include one opening 163, and the second chamber positioned below the vibrator may include two openings 164a and 164b. In addition, the openings 163 of the first chamber and the openings 164a and 164b of the second chamber may be alternately disposed with respect to the horizontal direction of the housing part 160.

The side surface of the housing part 160 includes a first section z1 located at the center of the housing part 160 with respect to the horizontal longitudinal direction of the housing part 160, a second section z2 located at the left corner, and a right side. It may be divided into a third section z3 in which the corner portion is located. In this case, the first section z1 may be formed as an area within a range of the first distance d1 from the center line with respect to the horizontal length of the side surface of the housing part 160 to the left and the right. In addition, the second section z2 may be formed as an area within a second distance d2 from the left end of the side surface of the housing 160. The third section z3 may be formed as an area within a second distance d2 from the right end of the side surface of the housing part 160.

In this regard, the opening 163 of the first chamber may be included in the first section z1, the first opening 164a of the second chamber may be included in the second section z2, and the first opening of the second chamber may be included. The second opening 164b may be included in the third section z3. According to an embodiment of the present invention, the sum d1 + d2 of the first distance d1 and the second distance d2 is less than or equal to half of the horizontal width w of the side surface of the housing part 160. It may be provided. Through this, the opening 163 of the first chamber and the openings 164a and 164b of the second chamber may not overlap with respect to the vertical direction of the housing 160. However, the arrangement of the openings is not limited thereto. According to another embodiment, the sum d1 + d2 of the first distance d1 and the second distance d2 may be greater than half of the horizontal width w of the side surface of the housing part 160. Accordingly, a portion of the first section z1, the second section z2, and the third section z3 may overlap. Since the sections may overlap, the openings 163 of the first chamber and the openings 164a and 164b of the second chamber included in each section may overlap with respect to the vertical direction of the housing unit 160.

The relationship between the size of the first distance d1 and the second distance d2 and the arrangement of the openings will be described in detail with reference to FIG. 7.

As such, the openings 163 of the first chamber and the openings 164a and 164b of the second chamber are alternately disposed with respect to the horizontal direction of the housing part 160, and in particular, the opening 163 of the first chamber is disposed in the housing part. By interposing the central portion of the side of the 160 and the openings 164a and 164b of the second chamber on the left and right sides of the side of the housing 160, the interference between the flow of gas passing through each opening can be minimized. . According to another embodiment, the first chamber may have two openings and the second chamber may have one opening. In addition, the two openings of the first chamber may be disposed at the left side and the right side of the side of the housing 160, and the opening of the second chamber may be disposed at the center of the housing 160, but is not limited thereto.

Meanwhile, as described above, the first chamber and the second chamber may have at least one opening on each side. In this case, the opening of the first chamber may be symmetrically disposed with respect to the horizontal square of the housing part 160. In addition, the opening of the second chamber may be symmetrically disposed with respect to the horizontal direction of the housing 160. As such, the opening of the electromagnetic driving gas blowing device 100 may be symmetrically disposed with respect to the horizontal direction of the housing 160 to effectively generate a flow of gas advantageous for cooling the external device. However, the arrangement of the openings provided in the chambers is not limited thereto.

In addition, as described above, the range of the second section z2 and the third section z3 may be limited to an area within a second distance d2, and through this, the second section z2 and the second section z2 may be limited. The first opening 164a of the second chamber and the second opening 164b of the second chamber included in the third section z3 may be disposed symmetrically with respect to the horizontal direction of the housing part 160. In addition, the central portion of the opening 163 of the first chamber included in the first section is disposed on the center line with respect to the horizontal direction of the housing 160, so that the opening 163 of the first chamber is horizontal to the housing 160. It can be arranged symmetrically with respect to the direction. However, the above description of the arrangement relationship is only one embodiment, and the plurality of openings may be symmetrically disposed with respect to the horizontal direction of the housing 160.

FIG. 7 is a diagram illustrating various embodiments of arrangement relations of the openings 163, 164a, and 164b provided on the side surface of the housing unit 160. As illustrated in FIG. 6, one opening of FIG. 7 may be provided in the upper first chamber and the lower second chamber, but is not limited thereto. As in the case of FIG. 6, the dashed-dotted line means a horizontal center line of the housing part 160, and w means a horizontal width of the side surface of the housing part 160. In addition, d1 denotes a first distance, d2 denotes a second distance, d3 denotes a third distance, d4 denotes a fourth distance, z1 denotes a first interval, z2 denotes a second interval, and z3 denotes a third interval. Each section is indicated by a dotted line in FIG. Here, the third distance d3 is one end of the first section z1 and the second section z2 when the first section z1, the second section z2, and the third section z3 do not overlap each other. ) And the other end of the third section z3. The fourth distance d3 may include the first interval z1 and the second interval z2 when the first interval z1, the second interval z2, and the third interval z3 overlap each other. The width in the horizontal direction of the region where the third section z3 overlaps.

As described above, the openings 163 of the first chamber and the openings 164a and 164b of the second chamber may be alternately disposed with respect to the horizontal direction of the housing part 160. Preferably, one end of the opening 163 of the first chamber and the other end of the openings 164a and 164b of the second chamber have a third distance d3 and a third direction with respect to the horizontal direction of the housing part 160. It may be located at a distance of any one of the four distance (d4). Detailed description thereof is as follows.

First, as described with reference to FIG. 6, the sum d1 + d2 of the first distance d1 and the second distance d2 is less than or equal to half of the horizontal width w of the side surface of the housing part 160. It may be provided. This is shown in Figures 7 (a) and 7 (b).

According to FIG. 7A, the sum of the first distance d1 and the second distance d2 may be less than half of the horizontal width w of the side surface of the housing part 160 (d1 + d2 <w). /2). Accordingly, one end of the first section z1, the second section z2, and the third section z3 are separated by a third distance d3 with respect to the horizontal direction of the housing 160. The opening 163 of the first chamber is included in the range of the first section z1, and the openings 164a and 164b of the second chamber are included in the range of the second section z2 and the third section z3, respectively. Can be. Therefore, one end of the opening 163 of the first chamber and the other end of the openings 164a and 164b of the second chamber may be separated by at least a third distance d3 with respect to the horizontal direction of the housing 160. The opening 163 of the first chamber and the openings 164a and 164b of the second chamber may not overlap each other with respect to the vertical direction of the housing 160.

Meanwhile, according to FIG. 7B, the sum of the first distance d1 and the second distance d2 may be equal to half of the horizontal width w of the side surface of the housing part 160 (d1 + d2 =). w / 2). In this case, the third distance d3 is zero. As in the case of FIG. 7A, the openings 163 of the first chamber and the openings 164a and 164b of the second chamber do not overlap each other with respect to the vertical direction of the housing part 160. However, the opening 163 of the first chamber and the openings 164a and 164b of the second chamber may form an arrangement relationship in which side surfaces thereof are in close contact with each other in the horizontal direction of the housing 160.

According to another embodiment of the present invention, according to FIG. 7C, the sum of the first distance d1 and the second distance d2 is greater than half of the horizontal width w of the side surface of the housing part 160. Consider the case (d1 + d2> w / 2). According to the conditions of the first distance d1 and the second distance d2, the first section z1, the second section z2, and the third section z3 overlap each other by the fourth distance d4. Can be. Since the opening 163 of the first chamber and the openings 164a and 164b of the second chamber may be included in the first section z1, the second section z2, and the third section z3, respectively, the first chamber The opening 163 may overlap the openings 164a and 164b of the second chamber with the fourth distance d4 with respect to the vertical direction of the housing 160. In this case, one end of the opening 163 of the first chamber and the other end of the openings 164a and 164b of the second chamber adjacent to the opening 163 of the first chamber may be separated by a fourth distance d4.

In FIG. 7, the opening of the first chamber and the opening of the second chamber are symmetrically disposed with respect to the horizontal direction of the housing 160, but are not limited thereto.

On the other hand, the arrangement relationship between the openings may be configured in combination of the three cases with reference to the shape and size of the housing portion 160, the width of the external heat dissipation device. That is, one end of the opening of the first chamber overlaps with respect to the vertical direction of the opening of the second chamber and the housing part, but the other end of the opening of the first chamber is not overlapped with respect to the vertical direction of the housing part of the second chamber. However, the arrangement of the openings is not limited to the above-described method. As such, each of the openings may be alternately disposed with respect to the horizontal direction of the housing 160, thereby minimizing interference between the flow of the gas ejected or introduced through the openings.

8 is a view showing another embodiment of the arrangement of the openings provided on the side of the housing unit 160. In FIG. 8, the dashed-dotted line indicates a boundary line between the first chamber and the second chamber included in the housing 160. Openings 163a, 163b and 163c located above the dashed-dotted line are those connected to the first chamber and openings 164a, 164b and 164c located below the dashed-dotted line are those connected to the second chamber.

6 to 7 illustrate that three openings are disposed on the side surface of the housing 160, but the number and the positions of the openings are not limited thereto. FIG. 8A illustrates an embodiment in which the openings 163a, 163b, and 163c of the three first chambers and the openings 164a, 164b, and 164c of the three second chambers are disposed on the side of the housing part 160. Doing. In this case, the openings of the respective chambers may be alternately disposed with respect to the horizontal direction of the housing part 160. In the embodiment of Figure 8 (b) four openings are arranged on the side of the housing portion 160. According to the embodiment of FIG. 8B, each of the openings may be asymmetrically disposed with respect to the horizontal direction of the housing 160, and the sizes of the openings may be different from each other. The opening 163a of the first chamber may overlap the opening 164a of the second chamber with respect to the vertical direction of the housing part 160, but may not overlap the opening 164b of the second chamber. In the embodiment of FIG. 8C, four openings are disposed on the side of the housing part 160. According to the exemplary embodiment of FIG. 8C, the openings 163a and 163b of the first chamber may be symmetrically disposed with respect to the horizontal direction of the housing part 160. In addition, the openings 164a and 164b of the second chamber may also be symmetrically disposed with respect to the horizontal direction of the housing part 160.

9 is a diagram illustrating an arrangement relationship of each of the openings 163, 164a, and 164b provided in the plurality of side surfaces of the housing part 160. As described above, each of the openings may be located at one side of the housing part 160, but is not limited thereto. In some embodiments, each of the openings may be disposed on at least two side surfaces of the housing unit 160.

In FIG. 9A, 160a represents a top surface of the housing portion 160, 160b represents a first side surface of the housing portion 160, and 160c represents a second side surface of the housing portion 160. According to FIG. 9A, the opening 163 of the first chamber is formed over the first side surface 160b and the second side surface 160c of the housing portion 160, and the first opening portion ( 164a may be located on the first side surface 160b and the second opening 164b of the second chamber may be positioned on the second side surface 160c.

In FIG. 9B, 160a is a top surface of the housing portion 160, 160b is a first side surface of the housing portion 160, 160c is a second side surface of the housing portion 160, and 160d is a third side of the housing portion 160. Side view. According to FIG. 9B, the opening 163 of the first chamber is located at the third side 160d of the housing 160, and the first opening 164a of the second chamber is the first side 160b, The second opening 164b of the second chamber may be located on the second side surface 160c.

Each of the openings 163, 164a, and 164b may be alternately disposed with respect to the horizontal direction of the housing part 160 in the same manner as in FIG. 7, thereby minimizing interference between the flow of gas entering and exiting each opening. Can be.

The arrangement relationship between the sides of the housing part 160 and the openings illustrated in FIG. 9 is only one embodiment of the present invention configured to help understanding of the present invention, and the arrangement relationship between the openings is not limited thereto.

10 is a view showing the size and shape of the opening 163. In FIG. 10, L1 denotes a width of the opening and L2 denotes a height of the opening.

The size of the opening 163 affects the flow rate when the flow of gas generated by the vertical movement of the vibrating part is ejected to the outside of the housing part. That is, when the amplitude of the vibrator is determined to a specific size, the size of the opening for obtaining a specific flow rate may be determined within a range of a specific area value.

Preferably, the opening 163 may have a width of 1 mm or more and 35 mm or less, and a height of 0.2 mm or more and 6 mm or less, but is not limited thereto. In particular, the sum of the widths of the openings provided on the side of the housing part may be provided in a range of 0.5 times or more and 2 times or less of the width of the external heat sink. In addition, the opening 163 may have an area of 25 mm ² or less, but is not limited thereto.

According to FIG. 10A, the opening 163 may have a rectangular shape satisfying a specific width L1 and a height L2. In addition, according to FIG. 9B, the opening 163 may be formed in an ellipse shape that satisfies a specific width L1 and a height L2. In addition, according to FIG. 10C, the opening 163 may have a rectangular shape having rounded corners satisfying a specific width L1 and a height L2. That is, the opening may be provided in a rectangular shape, but is not limited thereto. The opening may be provided in various shapes satisfying the length range of the specific width L1 and the height L2.

As described above, the electromagnetic drive gas ejection apparatus according to the present invention, the vibrating portion moves up and down by the vibration generated in the drive unit, and the flow of gas generated by the up and down movement of the vibrating portion is staggered with respect to the horizontal direction of the housing portion It may be ejected through at least two openings disposed, and the openings may be symmetrically disposed with respect to the horizontal direction of the housing part. In more detail, the coil of the drive unit moves up and down by the force of Lorentz, and the vibrator connected to the coil moves in the same direction as the coil to generate a flow of gas around the vibrator. Since the permanent magnet of the driving unit can be fixed and installed in a specific direction, the direction of the current flowing through the coil must be changed in order for the vibration unit and the coil to vibrate. Preferably, the electrical signal applied to the coil may be provided as a sine wave having a specific amplitude and frequency, but is not limited thereto.

On the other hand, the electromagnetic drive gas blowing device can be controlled through an external controller. In particular, the controller may generate a sinusoidal wave for driving the drive unit of the electromagnetic driven gas blowing device. The controller may be implemented in various ways and various embodiments are shown in FIGS. 11 to 13. However, the structure of the controller is not limited to the configuration of the drawings.

11 is a circuit diagram of a controller 200 according to an embodiment of the present invention. In FIG. 11, R1, R2, and R3 denote resistors, C1, C2, C3, C4, and C5 denote capacitors, and A denotes an amplifier. In FIG. 11, a voltage input for driving the amplifier A and a terminal for inputting the voltage are omitted. In the amplifier A of FIG. 11, + denotes an injection force terminal, and − denotes a negative input terminal. In addition, Vo + and Vo- mean the positive output terminal and the negative output terminal of the controller 200a, respectively. Two output terminals of the controller 200a may be connected to both ends of the coil 124 of the driving unit of the electromagnetic driving gas blowing device. In FIG. 11, the coil 124 is indicated by a dotted line.

Referring to FIG. 11A, the controller 200 may include a power driver 220a and a phase delay unit 240a. The power driver 220a and the phase delay unit 240a are indicated by broken lines in FIG. 11.

The power driver 220a may receive the output signal again and generate a sine wave. To this end, the power driver 220a may include an amplifier A that amplifies the input electrical signal by a specific gain. Here, the amplifier may be provided as an operational amplifier, but is not limited thereto. Various other amplifiers may be utilized. An op amp is an active device that can perform signal inverting, differential signal amplifying, etc., and can also be used as an integrator, depending on the circuit configuration. In FIG. 11, the amplifier A configures a feedback circuit that receives an output signal of the phase delay unit 240a, which will be described later, into the negative input terminal. The sine wave generated in the amplifier A may be connected to the positive output terminal Vo + via the resistor R4. In FIG. 11 (a), the conductive line located at the lower end of the phase delay unit 240a is connected to the negative output terminal Vo-, whereby the entire circuit may be configured as single-ended.

The phase delay unit 240a may delay the phase of the electrical signal by a specific phase. In an electronic circuit, the phase of an electrical signal may be changed by a capacitor and an inductor. The phase delay unit 240a of FIG. 11 changes the phase through a combination of a resistor and a capacitor. In this case, the capacitors of the phase delay unit 240a may be provided as ceramic temperature-compensating capacitors, and although the temperature change occurs, the capacitors may be stably operated, but the present invention is not limited thereto.

FIG. 11B shows the phase delay unit 240a delaying the input phase of the electrical signal by 200 degrees. To facilitate understanding of the invention, it is assumed a circuit consisting of a capacitor C1 and a resistor R1, but the C1 and R1 is connected in series with the phase delay unit 240a. First, the phase delay unit 240a may receive an output signal of the power driver 220a through the capacitor C1. The output signal may be delayed in phase by a specific phase by passing through the capacitor C1, which may be confirmed by comparing a waveform of an output signal of the power driver 220a and an electrical signal measured across the resistor R1. The impedance XC of the capacitor is inversely proportional to the frequency f of the input electrical signal and the capacitance C of the capacitor, and the change in phase through the RC circuit can be obtained by taking an arc tangent to the XC / R value. The RC circuit may be configured such that a phase difference between an input signal and an output signal of a corresponding frequency is 60 degrees by selecting a resistor value R1 and a capacitor capacitor C1 suitable for a specific frequency of a sine wave to be generated. The circuits are constructed identically using R2, R3 having the same resistance value as the resistor R1 of the RC circuit and C2, C3 having the same capacitor capacity as the capacitor C1, and then each RC circuit is connected in series with the capacitor and connected to the resistor. In parallel, the entire phase delay unit 240a as shown in FIG. 11 (b) may be configured. Through this, the phase delay unit 240a may generate an output signal to which a phase change of −200 degrees is applied to an electrical signal input having a specific frequency. In FIG. 11A, a phase delay unit 240a having a three-step structure in which a phase change of -60 degrees occurs is illustrated, but is not limited thereto. The phase delay unit has a four-step structure in which a phase of -45 degrees is changed at each step. 240a may be configured. The phase delay unit 240a of the multi-stage structure described above may improve the stability of the entire feedback circuit.

Meanwhile, according to FIG. 11A, the electrical signal output from the power driver 220a passes through the phase delay unit 240a and the electrical signal passed through the phase delay unit 240a receives the negative input of the amplifier A. A negative feedback circuit is inputted to the terminal again. In such a negative feedback circuit, the loop gain of the entire circuit may be obtained by multiplying the gain of the amplifier by the gain of the phase delay unit 240a existing in the feedback path. Theoretically, oscillation may occur when the loop gain is −1 in a negative feedback circuit. One method of forming the loop gain to -1 is to make the absolute value of the loop gain equal to 1 and to make the electrical signal input to the negative input terminal have a delayed phase value of 200 degrees relative to the output electrical signal of the amplifier A. . Here, the phase delay of about 200 degrees may be achieved through the above-described configuration of the phase delay unit 240a. When implementing this circuit diagram, it is possible to fabricate a controller that generates sinusoids stably by configuring the absolute value of the loop gain not to exceed 1.

In FIG. 11A, the capacitors C4 and C5 used at the input terminal of the amplifier A may improve the stability of the entire circuit, and R4 at the output terminal may be used to adjust the output voltage of the amplifier A.

12 is a circuit diagram of a controller 200b according to another embodiment of the present invention. As in FIG. 11A, C1, C2, C3, C4, and C5 denote capacitors, and R1, R2, R3, R4, R5, Ro +, and Ro− denote resistors. A1 and A2 mean a first amplifier and a second amplifier, respectively, and an input voltage and an input terminal for driving each amplifier are omitted in the drawing. Two output terminals of the controller 200b may be connected to both ends of the coil 124 of the driving unit of the electromagnetic driving gas blowing device. In FIG. 11, the coil 124 is indicated by a dotted line.

According to FIG. 12, the controller 200b according to the embodiment of the present invention may include a power driver 220b, a phase delay unit 240b, and an output controller 260. The power driver 220b, the phase delay unit 240b, and the output controller 260 are indicated by broken lines in FIG. 12.

Capacitors C4 and C5 of FIG. 12 may be provided for the stability of the circuit as in the case of FIG. 11A.

Since the phase delay unit 240b of FIG. 12 is structurally identical to the phase delay unit 240a of FIG. 11A, detailed description thereof will be omitted. Unlike the case of FIG. 11A, the conductive wire at the lowermost end of the phase delay unit 240a is separately grounded and may not be connected to the negative output terminal Vo-.

Referring to FIG. 12, the power driver 220b may include a first amplifier A1 and a second amplifier A2, and output signals of the two amplifiers may be a first output signal V1 and a second output signal, respectively. It is indicated by (V2). The first amplifier A1 of the power driver 220b may generate a sine wave according to the oscillation condition of the negative feedback, which is the same as the amplifier A of FIG. 11 (a), and thus description thereof will be omitted. However, unlike the case of FIG. 11A, the output signal of the first amplifier A1 may be transmitted to the negative output terminal Vo- after passing through the resistor Ro− of the output controller 260.

The second amplifier A2 may receive the first output signal V1 through the negative input terminal. In this case, the first resistor R4 may be connected between the output terminal of the first amplifier A1 and the negative input terminal of the second amplifier A2, and between the negative input terminal and the output terminal of the second amplifier A2. The second resistor R5 may be connected to a feedback path of the second resistor R5. As a result, the second amplifier A2 may design an inverted amplifier circuit together with the first resistor R4 and the second resistor R5. That is, the ratio of the second output signal V2 and the first output signal V1 is a value obtained by multiplying the ratio of the resistance value of the second resistor R5 and the resistance value of the first resistor R4 by a negative number −1. Proportional. If the resistance of the first resistor R4 and the resistance of the second resistor R5 are the same, the second output signal V2 is calculated as a value obtained by simply inverting the sign of the first output signal V1. The second output signal V2 may be transmitted to the positive output terminal Vo + after passing through the resistor Ro + of the output controller 260.

Unlike the power driver 220a of FIG. 11A, the power driver 220b of FIG. 12 may output a differential signal including the first output signal V1 and the second output signal V2. Can be. As described above, the second output signal V2 has a value in which the first output signal V1 is inverted. Such a differential signal output has a very strong characteristic of noise and doubles the range of the output voltage. You can.

The output controller 260 may receive the first output signal V1 and the second output signal V2 and adjust the voltages of the two output signals. The output control unit 260 may include two resistors Ro + and Ro− corresponding to each of the first output signal V1 and the second output signal V2, and by changing the resistance values of the two resistors, a positive output terminal is provided. You can adjust the magnitude of the final voltage output to (Vo +) and negative output terminal (Vo-).

In summary, the controller 200b of FIG. 12 may generate a sinusoidal wave that is more resistant to noise and has a wider range of output voltage than the controller 200a of FIG.

13 is a circuit diagram of a controller 200c according to another embodiment of the present invention. Since the controller 200c of FIG. 13 is the same in the remaining portions except for the phase delay unit 240b of the controller 200b of FIG. 12, description of the overlapped portions will be omitted. The two output terminals of the controller 200c may be omitted. It may be connected to both ends of the coil 124 of the drive unit of the electromagnetic drive gas blowing device. In FIG. 11, the coil 124 is indicated by a dotted line.

The phase delay unit 240b of FIG. 12 generates a phase delay of 200 degrees for a specific frequency determined by the values of the capacitors C1, C2, C3 and the resistors R1, R2, R3. However, the phase delay unit 240c of FIG. 13 does not change the phase of a specific resonance frequency determined by the values of C1, C2, R1, and R2, but generates a phase delay for a frequency component larger than the specific resonance frequency. The frequency component smaller than the specific resonance frequency has a characteristic of generating an effect of advancing a phase. In view of the frequency response, the phase delay unit 240c may be configured because R1 and C1 connected in series serve as a high pass filter (HPF) and R2 and C2 connected in parallel serve as a low pass filter (LPF). It works like a band pass filter (BPF) that only passes certain resonant frequencies. That is, as the electrical signal is fed back through the first amplifier A1 and the phase delay unit 240c, the remaining components except for the specific resonance frequency cancel each other and disappear, and only the components corresponding to the resonance frequency remain. A sinusoidal wave whose signal changes periodically according to the resonance frequency may be generated. Unlike the case of FIG. 12, the electrical signal passing through the phase delay unit 240c of FIG. 13 may be input to the positive input terminal of the first amplifier A1.

Since the phase delay unit 240c of FIG. 13 may generate a sinusoidal wave with little distortion, and the number of electronic elements required to configure the phase delay unit 240c is smaller than that of the phase delay unit 240b of FIG. Has the advantage in As described above, according to the present invention, it is possible to provide a gas blowing device which takes up a small volume and reduces noise and vibration. Through the embodiment of the present invention can effectively cool the external heat dissipation device, it is possible to reduce the flow loss of the gas by minimizing the interference between the flow of the gas ejected from each opening.

In addition, according to an embodiment of the present invention, it is possible to prevent the distortion of the vibration unit, to prevent interference with accessories such as chips provided on the surface of the external device and to reduce the vibration that may be generated in the drive unit have.

In addition, the controller according to the embodiment of the present invention can provide a sinusoidal wave with less distortion in the driving unit of the gas blowing device, through which it is possible to easily generate the vibration of the vibration unit.

Although the present invention has been described above through specific embodiments, those skilled in the art will be able to make modifications and changes without departing from the spirit of the present invention. Therefore, it should be construed that the person belonging to the technical field to which the present invention belongs can be easily inferred from the detailed description and the embodiment of the present invention.

Claims (18)

1. An electromagnetic drive unit generating vibration based on the input electrical signal;

   A vibration unit connected to the driving unit and vibrating according to the movement of the driving unit to generate a flow of gas; And

   A housing part provided inside the driving part and the vibrating part to eject a flow of gas generated by the vibrating part through an opening part; Including,

   The housing part,

   A first chamber positioned above the vibrator,

   A second chamber positioned below the vibrator,

   The first chamber and the second chamber each has at least one opening on one side,

   The opening of the first chamber and the opening of the second chamber are alternately arranged with respect to the horizontal direction of the housing part,

   And an opening of the first chamber is symmetrically disposed in a horizontal direction of the housing part.
2. The method of claim 1,

   And the opening of the second chamber is symmetrically arranged with respect to the horizontal direction of the housing part.
3. The method of claim 1,

   The first chamber has one opening and the second chamber has two openings,

   The opening of the first chamber is located in an area within a preset left and right distance range from the center line with respect to the horizontal length of the one side,

   The first opening of the second chamber is located in an area within a preset distance range from the left end of the one side,

   The second opening of the second chamber is an electromagnetic drive gas blowing device, characterized in that located in the area within a predetermined distance range from the right end of the one side.
4. The method of claim 1,

   The opening is,

   An electromagnetic drive gas blowing device having a width of 1 mm or more and 35 mm or less and a height of 0.2 mm or more and 6 mm or less.
5. The method of claim 1,

   An electromagnetic drive gas blowing device, characterized in that the area of the opening is 25 mm ² or less.
6. The method of claim 1,

   And the opening is rectangular.
7. The method of claim 1,

   The driving unit,

   Permanent magnets;

   A coil disposed adjacent to the permanent magnet and connected to the vibrator; And

   And a yoke forming a magnetic path penetrating the inside and the outside of the coil.
8. The method of claim 7, wherein

   The yoke,

   Phase yoke in the form of disc; And

   A lower yoke of a disk shape and a lower yoke of a shape in which a ring-shaped sidewall portion provided on an upper side of the lower plate is coupled;

   And the permanent magnet is disposed between the upper yoke and the lower yoke.
9. The method of claim 8,

   A ring-shaped gap is formed between the inner surface of the ring-shaped sidewall portion of the hake and the side surface of the upper yoke,

   And the coil is formed in the gap.
10. The method of claim 7, wherein

    And said drive portion vibrates said vibrating portion at 55 Hz or more and 85 Hz or less.
11. The method of claim 1,

    The vibrating unit,

    At least one wrinkle portion provided in the shape of concentric circles on the surface of the vibrating portion with respect to the center point of the vibrating portion,

    The corrugation unit is characterized in that the vibration is prevented from being bent in an irregular shape when the vibration is vibrated up and down.
12. The method of claim 1,

    Electromagnetic drive gas blowing device, characterized in that the displacement of the vibration generated in the vibrating portion is 0.9mm or less above and below the neutral state.
13. The method of claim 1,

    The vibrating portion is provided with a disc having a diameter of 25 mm or more and 75 mm or less, and the thickness of the disc is 0.02 or more and 0.1 mm or less.
14. A controller for controlling an electromagnetic driven gas blowing device, the controller comprising:

    The electromagnetic drive gas blowing device,

    The vibrating unit moves up and down by the vibration generated by the driving unit, and the flow of gas generated by the up and down movement of the vibrating unit is ejected through at least two openings arranged alternately with respect to the horizontal direction of the housing unit, wherein the opening is Disposed symmetrically with respect to the horizontal direction of the housing portion,

    The controller generates a sinusoidal wave for driving a drive of the electromagnetic driven gas blowing device,

    A power driver configured to receive the output signal again and generate a sine wave; And

    A phase delay unit for delaying the phase of the electrical signal by a specific phase,

    The power driver includes an amplifier,

    And an electrical signal output from the power driver passes through the phase delay unit, and the electrical signal passed through the phase delay unit is re-input to the negative input terminal of the amplifier.
15. The method of claim 14,

    The phase delay unit,

    And at least one circuit in series with a capacitor and a resistor in series.
16. The method of claim 15,

    If the circuit is plural,

    And wherein said plurality of said circuits are connected in series for a capacitor and in parallel for a resistor.
17. A controller for controlling an electromagnetic driven gas blowing device, the controller comprising:

    The electromagnetic drive gas blowing device,

    The vibrating unit moves up and down by the vibration generated by the driving unit, and the gas flow generated by the up and down movement of the vibrating unit is ejected through at least two openings arranged alternately with respect to the horizontal direction of the housing unit, and the opening is Disposed symmetrically with respect to the horizontal direction of the housing portion,

    The controller generates a sinusoidal wave for driving the drive unit of the electromagnetic driven gas blowing device,

    A power driver configured to receive the output signal again and generate a sine wave;

    A phase delay unit for delaying a phase of the electrical signal by a specific phase; And

    An output control unit for adjusting the magnitude of the output signal of the power driver,

    The power driver includes a first amplifier and a second amplifier,

    The first amplifier,

    Generate a first output signal,

    Re-input of the first output signal passing through the phase delay unit to a negative input terminal,

    The second amplifier,

    The second output signal is generated by receiving the first output signal through a negative input terminal.

    The first resistor is connected between the output terminal of the first amplifier and the negative input terminal of the second amplifier, the second resistor is connected between the negative input terminal and the output terminal of the second amplifier, the ratio of the two resistors Outputting a second output signal in which the first output signal is inverted and amplified by

    And the output controller receives the first output signal and the second output signal and adjusts voltages of the two output signals.
18. The method of claim 17,

    The phase delay unit,

    A first circuit in which a third resistor and a first capacitor are connected in series; And

    The fourth resistor and the second capacitor comprise a second circuit connected in parallel,

    And the first circuit operates as a high pass filter and the second circuit operates as a low pass filter.

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