USRE37261E1 - Axially compact small fan - Google Patents

Axially compact small fan Download PDF

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Publication number
USRE37261E1
USRE37261E1 US08/369,848 US36984895A USRE37261E US RE37261 E1 USRE37261 E1 US RE37261E1 US 36984895 A US36984895 A US 36984895A US RE37261 E USRE37261 E US RE37261E
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United States
Prior art keywords
circuit board
portable fan
fan according
motor
rotor
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Expired - Lifetime
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US08/369,848
Inventor
Fritz Schmider
Edgar Zuckschwert
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Papst Licensing GmbH and Co KG
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Papst Licensing GmbH and Co KG
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Priority to US08/369,848 priority Critical patent/USRE37261E1/en
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0653—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the motor having a plane air gap, e.g. disc-type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/12—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using detecting coils using the machine windings as detecting coil
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
    • H02K5/1675—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at only one end of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos

Definitions

  • the invention relates to a flat or shallow constructed small or portable fan with an impeller or fan wheel on a motor shaft and with a commutatorless direct current (d.c.) motor as the drive.
  • the said direct current motor has only one coil on a circuit board in the stator.
  • the rotor has an axially magnetized permanent magnet.
  • the known fans are characterized by a relatively small volume. However, an even flatter fan construction is required for various applications, also in connection with measures for minimizing sound transmission from the fan to the environment.
  • the problem of the invention is to make such a fan more compact in the axial direction, while simultaneously reducing manufacturing costs.
  • this problem is solved by a configuration of the fan drive and the fan in which the radially directed fan blades allow rotation to take place in both directions.
  • the arrangement of the driving coil, driving electronics and magnetic yoke is kept axially compact through the use of a printed circuit board, and iron is used as the so-called base material.
  • the overall height of the portable fan is less than 30 mm.
  • FIG. 1 is a cross-section through a portable fan with a commutatorless drive motor
  • FIG. 2 is a sectional view displaced relative to FIG. 1;
  • FIG. 3 is an exploded view better showing details of FIG. 2;
  • FIG. 4 is a circuit for operating the drive motor
  • FIG. 5 is a sectional view of a fan, similar to that of FIG. 2 but with an alternative construction of the motor casing.
  • FIGS. 1, 2 and 3 show the following details of the fan.
  • An impeller 2 is mounted on a shaft 13 and driven by a four-pole permanent magnet 15 . Air is sucked in through an opening 6 a in a casing 6 positioned above the shaft 13 and is blown out laterally via radially positioned opening 6 b of the casing 6 .
  • the casing can be fixed to a printed circuit board 1 with an inwardly or outwardly directed snap-action connection 43 (FIG. 2) or 44 (FIG. 1 ).
  • the printed circuit board 1 is made from iron as the base material with a laminated insulating layer and printed or etched on conductors 18 , which contact electric circuit components 17 .
  • the printed circuit board 1 also has grooves or depressions 40 in which are located permanent magnets 16 .
  • a working permanent magnet 15 of the impeller 2 is brought into a clearly defined starting position by the field of the magnets 16 .
  • the printed circuit board 1 also carries an oval or elliptical coil 10 which may be, for example, a bifilar winding or a monofilar winding with an open center tap.
  • the coil wire ends are fixed to connection points 30 , 31 , 32 , 34 (cf. FIG. 3 ).
  • the coil 10 surrounds a bearing tube 12 , which carries the shaft 13 and which is constructed, for example, for example as a sintered part or as a plastic moulding.
  • the bearing tube 12 is additionally supported at a point spaced from the printed circuit board 1 , by a supporting member 11 , which is engaged by its terminal protuberances 21 in recesses 20 of the circuit board.
  • the impeller 2 is fixed by conventional technology to the shaft 13 .
  • the supporting member 11 has a centrally positioned opening 11 a for receiving an upper, tubular portion 12 a of the bearing tube 12 .
  • the member 11 also has widened feet 11 b for engaging in planar manner on the circuit board 1 . With its central opening the coil 10 can be placed accurately around the feet 11 b of the supporting member 11 .
  • Recessed 23 positively allow an alignment of a foot 22 of the bearing tube 12 with respect to the printed circuit board 1 .
  • the shaft 13 of the impeller 2 mounted by the bearing tube 12 carries at the lower end an abutment ring 5 , a retaining ring 4 , and a track cap 13 a of the shaft 13 runs on the bearing part 3 , which substantially constantly absorbs the axially directed force caused by the working magnet 15 and the iron yoke of the circuit board 1 .
  • the track cap 13 a and the bearing part 3 form a starting bearing.
  • the bearing part 3 is preferably snapped in and has snap-action projections 41 or 25 , which engage in recesses 42 (FIG. 3 ).
  • the working magnet 15 of the impeller 2 is positioned in such a way that its north pole surfaces point towards the south pole regions of the coil or vice versa.
  • the four-pole, axially magnetized magnet 15 preferably has an iron yoke member 14 .
  • the auxiliary magnets 16 are so positioned that on switching on there is a rotary movement of the impeller 2 . Simultaneously the working magnet 15 induces a voltage in part of the coil 10 , so that the coil current is interrupted by series-connected electronic circuits and the impeller 2 can continue to rotate freely.
  • FIG. 4 shows details of the circuit.
  • a transistor T 3 supplies a supply voltage to part 66 of the coil 10 .
  • the voltage peaks occurring on switching off the said coil part 66 are reduced across a diode D 1 .
  • a part 67 of the coil 10 produces in the aforementioned manner induced voltages, which are supplied across the connection point 32 to a transistor T 2 .
  • the transistor T 2 opens or closes the transistor T 3 .
  • Components T 1 , R 1 , R 2 and R 3 , as well as C 1 and the conventional components of the, to this extent known, circuit are to be connected with the contact points 30 , 31 , 32 , 34 of the four coil wire ends. As a result of this circuit the noise produced when operating the fan is low.
  • Monofilar wound coils with a center tap can be used with other circuits.
  • Such a circuit variant is easier to manufacture, but surprisingly leads to somewhat higher motor noise than the first-mentioned circuit variant.
  • the desired fan speed is adjusted by means of the resistor R 3 and the capacitor C 1 .
  • the blower according to FIG. 5 has essentially the same construction as that of FIG. 2 .
  • the external diameter of the casing 56 is reduced and preferably in the axial center of its outer jacket is provided a preferably all-round fastening slot 51 , which projects radially inwards into a free space 52 of the motor.
  • the installation diameter can be reduced, in that the fan is fixed by being engaged on a U-shaped sheet metal wall 57 , for example which engages positively in the slot 51 .
  • the air is sucked in axially through the opening 56 a, which can be given a differing configuration as a function of the intended use, while being radially blown out through the opening or openings 56 b.
  • the flow guide ring 6 in FIG. 2 can be mounted on the fan side therein, as can an element 59 secured on the apparatus to be ventilated.
  • the casing 56 On its circumferential outer face the casing 56 is provided with the slot 51 for a locking fastening in the apparatus to be ventilated. Corresponding projections can be provided on the casing 56 for a locking fastening.
  • an adhesive fluid is applied to the shaft 3 so as to prevent the wetting thereof by oil. Coating the shaft with this fluid ensures that the oil remains in the bearing area and no creep or expansion thereof into other areas takes place.
  • a fluid of this type is also called an “epilaminating agent”.

Abstract

A flat portable fan with an impeller on a motor shaft and a commutatorless direct current motor is provided having a printed circuit board in the stator and an axially magnetized permanent magnet in the rotor. The circuit board comprises a printed circuit having electronic components of the fan drive and is made from an iron base material with an insulating layer, which carries the stator windings and an axial starting bearing for the rotor. The impeller is mounted in a cylindrical rotor mounting support and is driven by the axially magnetized permanent magnet. The iron base material and the permanent magnet substantially define a planar air gap.

Description

The invention relates to a flat or shallow constructed small or portable fan with an impeller or fan wheel on a motor shaft and with a commutatorless direct current (d.c.) motor as the drive. The said direct current motor has only one coil on a circuit board in the stator. The rotor has an axially magnetized permanent magnet.
Such fans are known from De-OS 38 38 367 and German Utility models G 87 02 271 and G 87 14 988.
The known fans are characterized by a relatively small volume. However, an even flatter fan construction is required for various applications, also in connection with measures for minimizing sound transmission from the fan to the environment.
The problem of the invention is to make such a fan more compact in the axial direction, while simultaneously reducing manufacturing costs.
According to the invention this problem is solved by a configuration of the fan drive and the fan in which the radially directed fan blades allow rotation to take place in both directions. The arrangement of the driving coil, driving electronics and magnetic yoke is kept axially compact through the use of a printed circuit board, and iron is used as the so-called base material. The overall height of the portable fan is less than 30 mm.
Further details, features and advantageous developments of the invention can be gathered from the non-limitative embodiment described hereinafter, the claims and the attached drawings, wherein:
FIG. 1 is a cross-section through a portable fan with a commutatorless drive motor;
FIG. 2 is a sectional view displaced relative to FIG. 1;
FIG. 3 is an exploded view better showing details of FIG. 2;
FIG. 4 is a circuit for operating the drive motor; and
FIG. 5 is a sectional view of a fan, similar to that of FIG. 2 but with an alternative construction of the motor casing.
FIGS. 1, 2 and 3 show the following details of the fan.
An impeller 2 is mounted on a shaft 13 and driven by a four-pole permanent magnet 15. Air is sucked in through an opening 6a in a casing 6 positioned above the shaft 13 and is blown out laterally via radially positioned opening 6b of the casing 6.
The casing can be fixed to a printed circuit board 1 with an inwardly or outwardly directed snap-action connection 43 (FIG. 2) or 44 (FIG. 1). The printed circuit board 1 is made from iron as the base material with a laminated insulating layer and printed or etched on conductors 18, which contact electric circuit components 17.
The printed circuit board 1 also has grooves or depressions 40 in which are located permanent magnets 16. When no current is applied to the drive motor a working permanent magnet 15 of the impeller 2 is brought into a clearly defined starting position by the field of the magnets 16.
The printed circuit board 1 also carries an oval or elliptical coil 10 which may be, for example, a bifilar winding or a monofilar winding with an open center tap. The coil wire ends are fixed to connection points 30, 31, 32, 34 (cf. FIG. 3). The coil 10 surrounds a bearing tube 12, which carries the shaft 13 and which is constructed, for example, for example as a sintered part or as a plastic moulding. The bearing tube 12 is additionally supported at a point spaced from the printed circuit board 1, by a supporting member 11, which is engaged by its terminal protuberances 21 in recesses 20 of the circuit board.
The impeller 2 is fixed by conventional technology to the shaft 13. The supporting member 11 has a centrally positioned opening 11a for receiving an upper, tubular portion 12a of the bearing tube 12. The member 11 also has widened feet 11b for engaging in planar manner on the circuit board 1. With its central opening the coil 10 can be placed accurately around the feet 11b of the supporting member 11. Recessed 23 positively allow an alignment of a foot 22 of the bearing tube 12 with respect to the printed circuit board 1.
The shaft 13 of the impeller 2 mounted by the bearing tube 12 carries at the lower end an abutment ring 5, a retaining ring 4, and a track cap 13a of the shaft 13 runs on the bearing part 3, which substantially constantly absorbs the axially directed force caused by the working magnet 15 and the iron yoke of the circuit board 1. The track cap 13a and the bearing part 3 form a starting bearing. The bearing part 3 is preferably snapped in and has snap-action projections 41 or 25, which engage in recesses 42 (FIG. 3).
When current is applied to the coil 10 a magnetic field is formed, which has opposite polarity inside and outside the coil. As a result of the divergences from the circular shape of the coil 10, and as a function of the direction of the coil current, the working magnet 15 of the impeller 2 is positioned in such a way that its north pole surfaces point towards the south pole regions of the coil or vice versa. In order to improve the motor efficiency the four-pole, axially magnetized magnet 15 preferably has an iron yoke member 14.
The auxiliary magnets 16 are so positioned that on switching on there is a rotary movement of the impeller 2. Simultaneously the working magnet 15 induces a voltage in part of the coil 10, so that the coil current is interrupted by series-connected electronic circuits and the impeller 2 can continue to rotate freely.
After a certain time the phase position of the induced voltage is reversed, so that the electronic circuit again allows current to be applied to the coil and the impeller can rotate on. Thus, starting can take place in both rotation directions, so that the blades of the impeller 2 are radially positioned. The air speed is increased in each drive motor rotation direction and a uniform air flow is produced.
FIG. 4 shows details of the circuit. Across connection points 30 and 32, a transistor T3 supplies a supply voltage to part 66 of the coil 10. The voltage peaks occurring on switching off the said coil part 66, are reduced across a diode D1. A part 67 of the coil 10 produces in the aforementioned manner induced voltages, which are supplied across the connection point 32 to a transistor T2. At the appropriate time the transistor T2 opens or closes the transistor T3. Components T1, R1, R2 and R3, as well as C1 and the conventional components of the, to this extent known, circuit are to be connected with the contact points 30, 31, 32, 34 of the four coil wire ends. As a result of this circuit the noise produced when operating the fan is low.
Monofilar wound coils with a center tap can be used with other circuits. Such a circuit variant is easier to manufacture, but surprisingly leads to somewhat higher motor noise than the first-mentioned circuit variant.
The desired fan speed is adjusted by means of the resistor R3 and the capacitor C1.
The aforementioned switching elements, with the exception of the coils and the capacitor, can naturally all be combined in an integrated circuit (IC).
The blower according to FIG. 5 has essentially the same construction as that of FIG. 2. However, the external diameter of the casing 56 is reduced and preferably in the axial center of its outer jacket is provided a preferably all-round fastening slot 51, which projects radially inwards into a free space 52 of the motor. Thus, for the same motor size and power, the installation diameter can be reduced, in that the fan is fixed by being engaged on a U-shaped sheet metal wall 57, for example which engages positively in the slot 51. As in FIG. 2, the air is sucked in axially through the opening 56a, which can be given a differing configuration as a function of the intended use, while being radially blown out through the opening or openings 56b. The flow guide ring 6 in FIG. 2 can be mounted on the fan side therein, as can an element 59 secured on the apparatus to be ventilated.
On its circumferential outer face the casing 56 is provided with the slot 51 for a locking fastening in the apparatus to be ventilated. Corresponding projections can be provided on the casing 56 for a locking fastening.
Preferably an adhesive fluid is applied to the shaft 3 so as to prevent the wetting thereof by oil. Coating the shaft with this fluid ensures that the oil remains in the bearing area and no creep or expansion thereof into other areas takes place. A fluid of this type is also called an “epilaminating agent”.

Claims (19)

We claim:
1. Flat portable fan with an impeller on a motor shaft and a commutatorless direct current motor including a stator, a rotor, and a fan drive having electronic control components, said motor having a printed circuit board in the stator and having an axially magnetized permanent magnet in the rotor, the circuit board being made of an iron base material with an insulating layer thereon and comprising a printed circuit having conductors which contact the electronic components of the fan drive, made from an iron base material with an insulating layer, the circuit board carrying stator windings and an axial starting bearing for the rotor, the impeller being mounted in a cylindrical rotor mounting support and being driven by the axially magnetized permanent magnet, and the iron base material and the permanent magnet substantially defining a planar air gap.
2. Flat portable fan comprising:
a commutatorless direct current drive motor having a motor shaft, a stator, and electronic control components;
an air impeller rotor structure mounted directly on the motor shaft, the structure providing the dual function of both the rotor of the motor and the impeller of the fan;
an axially magnetized permanent magnet mounted internally of the impeller rotor structure, the impeller rotor being mounted in a cylindrical rotor mounting support and being driven by interaction between the stator and the axially magnetized permanent magnet;
a printed circuit board mounted on the stator, the printed circuit board being constructed of iron as a base material with an insulating layer thereon, the iron base material providing the dual function of both a component of strength for a mounting base and a magnetic yoke for the motor;
a printed circuit on the insulating layer of the circuit board having thereon the electronic control components of the motor;
stator windings mounted on the insulating layer of the circuit board;
an axial starting bearing for the rotor carried by the printed circuit board; and
the iron base material and the permanent magnet defining substantially a planar air gap.
3. Portable fan according to claim 1 or 2, wherein the stator windings are formed by an oval coil, the motor shaft is located approximately in the center of the coil, and further comprising magnetically acting means provided for a specific starting position of the rotor.
4. Portable fan according to claim 1 or 2, wherein the starting bearing for the rotor is formed by a plastic bearing supporting the motor shaft with a track cap.
5. Portable fan according to claim 4, wherein openings are provided in the circuit board, and motor casing parts are provided with projections which can snap into the openings in the circuit board.
6. Portable fan according to claim 4, wherein openings are provided in the circuit board, and motor bearing parts are provided with projections which can snap into the openings provided in the circuit board.
7. Portable fan according to claim 1 or 2, wherein the rotor mounting support has a bearing tube and a support member for the bearing tube.
8. Portable fan according to claim 7, wherein the bearing tube is formed by a sintered part and is inserted in non-rotary manner in an opening of the printed circuit board and is additionally retained and centered by the supporting member constructed as a plastic moulding.
9. Portable fan according to claim 8, wherein the supporting member for the bearing tube at the same time centers and orients the coil.
10. Portable fan according to claim 7, wherein openings are provided in the circuit board, and motor casing parts are provided with projections which can snap into the openings in the circuit board.
11. Portable fan according to claim 5, wherein openings are provided in the circuit board, and motor bearing parts are provided with projections which can snap into the openings provided in the circuit board.
12. Portable fan according to claim 5, wherein the bearing tube is formed by a plastic moulding and is inserted in non-rotary manner in an opening of the printed circuit board and is additionally retained and centered by the supporting member also constructed as a plastic moulding.
13. Portable fan according to claim 1 or 2, wherein openings are provided in the circuit board and motor casing parts are provided with projections which can snap into the openings in the circuit board.
14. Portable fan according to claim 1 or 2, wherein the electronic components are combined in an integrated circuit.
15. Portable fan according to claim 1 or 2, wherein the coil comprises a bifilar winding.
16. Portable fan according to claim 1 or 2, wherein axially the overall height of the portable fan is less than 30 mm.
17. Portable fan according to claim 1 or 2, wherein the impeller can start in both rotation directions and has radially oriented blades, the air being sucked in axially and blown out radially.
18. Portable fan according to claim 1 or 2, wherein thefurther comprising a casing having an outer circumference of the casingwhich is profiled by depressions for fastening therein thean apparatus to be ventilated.
19. Portable fan according to claim 1 or 2, wherein openings are provided in the circuit board, and motor bearing parts are provided with projections which can snap into the openings provided in the circuit board.
US08/369,848 1990-08-22 1995-01-05 Axially compact small fan Expired - Lifetime USRE37261E1 (en)

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DE9012087 1990-08-22
DE9012087U DE9012087U1 (en) 1990-08-22 1990-08-22
US07/659,984 US5176509A (en) 1990-08-22 1991-02-22 Axially compact small fan
US08/369,848 USRE37261E1 (en) 1990-08-22 1995-01-05 Axially compact small fan

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6368081B1 (en) * 1999-11-19 2002-04-09 Minebea Co. Ltd. Blower
US6511300B2 (en) * 2000-09-01 2003-01-28 Minebea Co., Ltd. Impeller for axial flow type blower
US20030019646A1 (en) * 2001-07-30 2003-01-30 Clements Bradley Edgar Mounting apparatus for coupling control circuitry to an air moving device
US20030178954A1 (en) * 2002-01-02 2003-09-25 Winkel Casey R. Multiple fault redundant motor
US6700781B2 (en) * 2001-09-12 2004-03-02 Delta Electronics, Inc. Heat-dissipating module for removing heat generated from heat-generating device
US20050106031A1 (en) * 2003-11-18 2005-05-19 Hon Hai Precision Industry Co., Ltd. Fan seat and method for producing it
US20050140233A1 (en) * 2003-12-10 2005-06-30 Fujitsu General Limited Air blower apparatus
US20070048158A1 (en) * 2005-08-24 2007-03-01 Metropolitan Industries, Inc. Low Profile Pump
US20090016914A1 (en) * 2007-07-09 2009-01-15 Adda Corporation Thin fan structure
US20090180901A1 (en) * 2008-01-15 2009-07-16 Delta Electronics, Inc Fan and inner rotor motor thereof
US20100308684A1 (en) * 2008-01-18 2010-12-09 Alex Horng Motor with Detacthable Winding Assemblies
US8016556B2 (en) 2006-03-13 2011-09-13 Nidec Corporation Centrifugal fan
US20120121409A1 (en) * 2008-11-27 2012-05-17 Zhongshan Broad-Ocean Motor Manufacturing Co., Ltd. Blower
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Families Citing this family (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5332374A (en) * 1992-12-30 1994-07-26 Ralph Kricker Axially coupled flat magnetic pump
DE59500779D1 (en) * 1994-02-05 1997-11-20 Papst Motoren Gmbh & Co Kg Fan with a fan wheel
IT1273198B (en) * 1994-05-12 1997-07-07 Bitron A Spa IMPROVEMENTS TO AN ELECTRONICALLY COMMUTED FAN FOR THE CABIN OF A VEHICLE
DE4443844A1 (en) * 1994-12-09 1996-06-13 Philips Patentverwaltung Blower unit for generating gas flows
IT1279098B1 (en) * 1995-01-10 1997-12-04 Bitron Spa IMPROVEMENTS TO BRUSHLESS MOTORS, IN PARTICULAR FOR DIRECT DRIVING OF THE WASHING MACHINE BASKET
US5560208A (en) * 1995-07-28 1996-10-01 Halimi; Edward M. Motor-assisted variable geometry turbocharging system
US6256993B1 (en) 1995-07-28 2001-07-10 Honeywell International, Inc. Motor-assisted variable geometry turbocharging system
US6032466A (en) * 1996-07-16 2000-03-07 Turbodyne Systems, Inc. Motor-assisted turbochargers for internal combustion engines
US5870894A (en) * 1996-07-16 1999-02-16 Turbodyne Systems, Inc. Motor-assisted supercharging devices for internal combustion engines
US5787711A (en) * 1996-09-16 1998-08-04 Turbodyne Systems, Inc. Motor-assisted turbo-cooling system for internal combustion engines
US5904471A (en) * 1996-12-20 1999-05-18 Turbodyne Systems, Inc. Cooling means for a motor-driven centrifugal air compressor
US5857332A (en) * 1996-12-20 1999-01-12 Turbodyne Systems, Inc. Bearing systems for motor-assisted turbochargers for internal combustion engines
US5867987A (en) * 1997-02-25 1999-02-09 Turbodyne Systems, Inc. Method and apparatus for combined improved engine operation, warm-up and braking
US5997267A (en) * 1997-03-12 1999-12-07 Lee; Richard Non-electromagnetic interference generating cooling fan
US6011331A (en) * 1997-04-22 2000-01-04 Emerson Electric Co. Electric motor having an improved airflow cooling system
US6085527A (en) * 1997-05-15 2000-07-11 Turbodyne Systems, Inc. Magnet assemblies for motor-assisted turbochargers
US6062026A (en) * 1997-05-30 2000-05-16 Turbodyne Systems, Inc. Turbocharging systems for internal combustion engines
DE19824342B4 (en) * 1997-06-04 2007-12-13 Denso Corp., Kariya Electric fan device and connection
US6135731A (en) * 1997-06-26 2000-10-24 Turbodyne Systems, Inc. Compact and self-cooling blower assembly
US6079211A (en) * 1997-08-14 2000-06-27 Turbodyne Systems, Inc. Two-stage supercharging systems for internal combustion engines
DE29718082U1 (en) * 1997-10-11 1999-02-11 Papst Motoren Gmbh & Co Kg Small fan unit, especially for use as a circuit board fan
US6145314A (en) * 1998-09-14 2000-11-14 Turbodyne Systems, Inc. Compressor wheels and magnet assemblies for internal combustion engine supercharging devices
JP3255133B2 (en) * 1999-01-07 2002-02-12 松下電器産業株式会社 DC brushless fan
DE50008899D1 (en) 1999-11-27 2005-01-13 Ebm Papst St Georgen Gmbh & Co Electronically commutated DC motor
US6318976B1 (en) * 2000-04-10 2001-11-20 Hsieh Hsin-Mao Heat dissipation fan
DE10044066A1 (en) 2000-09-07 2002-04-04 Stribel Gmbh Electric fan
US6719534B2 (en) * 2001-04-11 2004-04-13 Denso Corporation Vehicle seat blower unit with a motor mounted within a scroll housing and a cooling motor attachment bracket
US7074016B1 (en) * 2002-05-24 2006-07-11 Massachusetts Institute Of Technology Planar turbopump assembly
JP2004040926A (en) * 2002-07-04 2004-02-05 Minebea Co Ltd Fan motor
TWI220871B (en) * 2003-03-31 2004-09-11 Sunonwealth Electr Mach Ind Co Single member of a magnetic-conductive housing for a heat dissipating fan
TW566837U (en) * 2003-04-23 2003-12-11 Delta Electronics Inc Fan motor structure
US20060131973A1 (en) * 2003-04-23 2006-06-22 Delta Electronics, Inc. Fan
US20050074326A1 (en) * 2003-10-02 2005-04-07 Torrington Research Company Muffler for impeller with rearwardly curved blades
EP1747378B1 (en) * 2004-03-30 2010-10-20 ebm-papst St. Georgen GmbH & Co. KG Fan arrangement
JP2006161620A (en) * 2004-12-03 2006-06-22 Toshiba Tec Corp Motor-driven blower and assembling method thereof
EP1712799B1 (en) * 2005-04-07 2008-07-30 Harman Becker Automotive Systems GmbH Fan
TWI293106B (en) * 2005-11-22 2008-02-01 Sunonwealth Electr Mach Ind Co Thin-type fan
TWI292014B (en) * 2005-11-22 2008-01-01 Sunonwealth Electr Mach Ind Co Ultra thin-type fan
TW200732565A (en) * 2006-02-21 2007-09-01 Sunonwealth Electr Mach Ind Co The structure of a small blower
TW200736507A (en) * 2006-03-27 2007-10-01 Sunonwealth Electr Mach Ind Co A thin structure pattern of heat dissipation
TWI325753B (en) * 2007-07-24 2010-06-01 Sunonwealth Electr Mach Ind Co Impeller structure
CN101372981B (en) * 2007-08-24 2011-06-08 富准精密工业(深圳)有限公司 Heat radiation fan
EP2072832A3 (en) 2007-12-17 2014-04-30 Ebm-Papst St. Georgen GmbH & CO. KG Miniature fan
TWI326332B (en) * 2008-07-29 2010-06-21 Sunonwealth Electr Mach Ind Co Mini-fan
TW201020400A (en) * 2008-11-27 2010-06-01 Compal Electronics Inc Fan module for electronic device
ES2610613T3 (en) * 2009-03-11 2017-04-28 Askoll Holding S.R.L. Centrifugal discharge pump with blade impeller for washing machines or similar household appliances
US8513839B1 (en) * 2009-05-05 2013-08-20 John L Larson Fan with damper
US7800262B1 (en) * 2009-05-05 2010-09-21 John Leo Larson Centrifugal drop fan and valve with sliding motor
US8696332B2 (en) * 2009-06-15 2014-04-15 Sunonwealth Electric Machine Industry Co., Ltd Heat-dissipating fan
US8556601B2 (en) * 2009-12-16 2013-10-15 Pc-Fan Technology Inc. Heat-dissipating fan assembly
US9428237B2 (en) * 2010-09-01 2016-08-30 Peer Toftner Motorcycle with adjustable geometry
CN102130563A (en) * 2011-03-01 2011-07-20 刘行 Disc type permanent magnet motor comprising winding in printed circuit board structure
US8974194B2 (en) * 2011-12-09 2015-03-10 Sunonwealth Electric Machine Industry Co., Ltd. Advection-type fan and an impeller thereof
DE102012219771A1 (en) * 2011-12-13 2013-06-13 Brose Fahrzeugteile Gmbh & Co. Kg, Würzburg Radiator fan module and bearing assembly for a radiator fan module
US9022751B2 (en) 2012-03-13 2015-05-05 Sunonwealth Electric Machine Industry Co., Ltd. Advection fan and an impeller thereof
CN203730353U (en) * 2014-02-27 2014-07-23 讯凯国际股份有限公司 Thin axial air-gap fan
CN203934267U (en) * 2014-07-10 2014-11-05 讯凯国际股份有限公司 Integrate the radiator of radiating fin and electric fan
US11177726B2 (en) 2017-01-11 2021-11-16 Infinitum Electric, Inc. System and apparatus for axial field rotary energy device
US10186922B2 (en) 2017-01-11 2019-01-22 Infinitum Electric Inc. System and apparatus for axial field rotary energy device
US10135310B2 (en) 2017-01-11 2018-11-20 Infinitum Electric Inc. System and apparatus for modular axial field rotary energy device
WO2019190959A1 (en) 2018-03-26 2019-10-03 Infinitum Electric Inc. System and apparatus for axial field rotary energy device
US11283319B2 (en) 2019-11-11 2022-03-22 Infinitum Electric, Inc. Axial field rotary energy device with PCB stator having interleaved PCBS
US20210218304A1 (en) 2020-01-14 2021-07-15 Infinitum Electric, Inc. Axial field rotary energy device having pcb stator and variable frequency drive
US11482908B1 (en) 2021-04-12 2022-10-25 Infinitum Electric, Inc. System, method and apparatus for direct liquid-cooled axial flux electric machine with PCB stator

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4128364A (en) * 1972-11-23 1978-12-05 Papst-Motoren Kg Radial flow fan with motor cooling and resilient support of rotor shaft
US4513812A (en) 1981-06-25 1985-04-30 Papst-Motoren Gmbh & Co. Kg Heat sink for electronic devices
DE8702271U1 (en) * 1987-02-14 1987-06-04 Papst-Motoren Gmbh & Co Kg, 7742 St Georgen, De
DE8714988U1 (en) 1987-11-11 1987-12-23 Papst-Motoren Gmbh & Co Kg, 7742 St Georgen, De
US4737672A (en) * 1986-01-16 1988-04-12 Sanyo Electric Co., Ltd. Hybrid integrated circuit magnetic substrate for motor or generator circuit
US4806808A (en) * 1986-09-12 1989-02-21 Siemens Aktiengesellschaft Printed circuit board for external rotor motor with recess for Hall transducers
DE3838367A1 (en) 1987-11-11 1989-06-22 Papst Motoren Gmbh & Co Kg Electric motor for operation in an apparatus which can resonate
US4861237A (en) * 1985-11-07 1989-08-29 Shicoh Engineering Co., Ltd. Axial-flow fan apparatus
US4891537A (en) * 1984-11-07 1990-01-02 Shicoh Engineering Co. Ltd. 1-Phase energized disk-type brushless motor
US4955791A (en) * 1987-09-21 1990-09-11 Papst-Motoren & Co. Gmbh Small size fan
US4961017A (en) * 1987-09-28 1990-10-02 Akai Electric Co., Ltd. Stator for use in a brushless motor
US5028216A (en) * 1982-11-09 1991-07-02 Papst-Motoren Gmbh & Co. Kg Miniaturized direct current fan
US5045740A (en) * 1988-09-16 1991-09-03 Yamamoto Electric Corporation Brushless motor
US5049770A (en) * 1990-03-26 1991-09-17 General Motors Corporation Electric motor-driven impeller-type air pump

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4128364A (en) * 1972-11-23 1978-12-05 Papst-Motoren Kg Radial flow fan with motor cooling and resilient support of rotor shaft
US4513812A (en) 1981-06-25 1985-04-30 Papst-Motoren Gmbh & Co. Kg Heat sink for electronic devices
US5028216A (en) * 1982-11-09 1991-07-02 Papst-Motoren Gmbh & Co. Kg Miniaturized direct current fan
US4891537A (en) * 1984-11-07 1990-01-02 Shicoh Engineering Co. Ltd. 1-Phase energized disk-type brushless motor
US4861237A (en) * 1985-11-07 1989-08-29 Shicoh Engineering Co., Ltd. Axial-flow fan apparatus
US4737672A (en) * 1986-01-16 1988-04-12 Sanyo Electric Co., Ltd. Hybrid integrated circuit magnetic substrate for motor or generator circuit
US4806808A (en) * 1986-09-12 1989-02-21 Siemens Aktiengesellschaft Printed circuit board for external rotor motor with recess for Hall transducers
DE8702271U1 (en) * 1987-02-14 1987-06-04 Papst-Motoren Gmbh & Co Kg, 7742 St Georgen, De
US4955791A (en) * 1987-09-21 1990-09-11 Papst-Motoren & Co. Gmbh Small size fan
US4961017A (en) * 1987-09-28 1990-10-02 Akai Electric Co., Ltd. Stator for use in a brushless motor
DE8714988U1 (en) 1987-11-11 1987-12-23 Papst-Motoren Gmbh & Co Kg, 7742 St Georgen, De
DE3838367A1 (en) 1987-11-11 1989-06-22 Papst Motoren Gmbh & Co Kg Electric motor for operation in an apparatus which can resonate
US5045740A (en) * 1988-09-16 1991-09-03 Yamamoto Electric Corporation Brushless motor
US5049770A (en) * 1990-03-26 1991-09-17 General Motors Corporation Electric motor-driven impeller-type air pump

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE39117E1 (en) * 1999-11-19 2006-06-06 Minebea Co., Ltd. Blower
US6368081B1 (en) * 1999-11-19 2002-04-09 Minebea Co. Ltd. Blower
USRE39787E1 (en) 1999-11-19 2007-08-21 Minebea Co., Ltd. Blower
US6511300B2 (en) * 2000-09-01 2003-01-28 Minebea Co., Ltd. Impeller for axial flow type blower
US6924979B2 (en) * 2001-07-30 2005-08-02 Hewlett-Packard Development Company, L.P. Mounting apparatus for coupling control circuitry to an air moving device
US20030019646A1 (en) * 2001-07-30 2003-01-30 Clements Bradley Edgar Mounting apparatus for coupling control circuitry to an air moving device
US6700781B2 (en) * 2001-09-12 2004-03-02 Delta Electronics, Inc. Heat-dissipating module for removing heat generated from heat-generating device
US6700266B2 (en) * 2002-01-02 2004-03-02 Intel Corporation Multiple fault redundant motor
US20030178954A1 (en) * 2002-01-02 2003-09-25 Winkel Casey R. Multiple fault redundant motor
US20050106031A1 (en) * 2003-11-18 2005-05-19 Hon Hai Precision Industry Co., Ltd. Fan seat and method for producing it
US7080973B2 (en) * 2003-11-18 2006-07-25 Hon Hai Precision Industry Co., Ltd. Fan seat and method for producing it
US20050140233A1 (en) * 2003-12-10 2005-06-30 Fujitsu General Limited Air blower apparatus
US20070048158A1 (en) * 2005-08-24 2007-03-01 Metropolitan Industries, Inc. Low Profile Pump
US8186975B2 (en) * 2005-08-24 2012-05-29 Metropolitan Industries, Inc. Low profile pump with first and second rotor arrangement
US8016556B2 (en) 2006-03-13 2011-09-13 Nidec Corporation Centrifugal fan
US20090016914A1 (en) * 2007-07-09 2009-01-15 Adda Corporation Thin fan structure
US7862309B2 (en) * 2007-07-09 2011-01-04 Adda Corporation Thin fan structure
US20090180901A1 (en) * 2008-01-15 2009-07-16 Delta Electronics, Inc Fan and inner rotor motor thereof
US8579609B2 (en) * 2008-01-15 2013-11-12 Delta Electronics, Inc. Fan and inner rotor motor thereof
US20100308684A1 (en) * 2008-01-18 2010-12-09 Alex Horng Motor with Detacthable Winding Assemblies
US20120121409A1 (en) * 2008-11-27 2012-05-17 Zhongshan Broad-Ocean Motor Manufacturing Co., Ltd. Blower
US8801406B2 (en) * 2008-11-27 2014-08-12 Zhongshan Broad-Ocean Motor Co., Ltd. Blower
TWI384128B (en) * 2010-03-16 2013-02-01 Sunonwealth Electr Mach Ind Co Cooling fan
TWI384130B (en) * 2010-03-16 2013-02-01 Sunonwealth Electr Mach Ind Co Cooling fan
US20130064700A1 (en) * 2011-09-09 2013-03-14 Ching-Lin Wu Cooling Fan and An Assembly Method Thereof
US9074603B2 (en) * 2011-09-09 2015-07-07 Sunonwealth Electric Machine Industry Co., Ltd. Cooling fan with circuit board positioning structure and an assembly method thereof
US20130270945A1 (en) * 2012-04-13 2013-10-17 William A. Ziegler Axial load sharing bearing system and associated method of use
US8963392B2 (en) * 2012-04-13 2015-02-24 Regal Beloit America, Inc. Axial load sharing bearing system and associated method of use

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