CN100554804C - Possess the air regulator of a plurality of blowing fans and the air quantity control method of this blowing fan - Google Patents
Possess the air regulator of a plurality of blowing fans and the air quantity control method of this blowing fan Download PDFInfo
- Publication number
- CN100554804C CN100554804C CNB2007100971284A CN200710097128A CN100554804C CN 100554804 C CN100554804 C CN 100554804C CN B2007100971284 A CNB2007100971284 A CN B2007100971284A CN 200710097128 A CN200710097128 A CN 200710097128A CN 100554804 C CN100554804 C CN 100554804C
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- Prior art keywords
- air
- blowing
- possesses
- blowing fan
- fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
- F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention provides a kind of low noise, high efficient air conditioner that possesses a plurality of blowing fans, possess: the indoor air sucting inlet that sucks room air; The outdoor air suction inlet of suction chamber outer air; The filter of the impurity that comprises in the air of described indoor air sucting inlet and outdoor air suction inlet has been passed through in removal; As the cooling worm, the heating coil that inhaled air are carried out the media of heat exchange; Suck and carry the blowing fan of the air that has passed through described cooling worm, heating coil; And the room air supply port supplied with to the interior space of air that will be transferred, described low noise, the high efficient air conditioner that possesses a plurality of blowing fans is characterised in that, be provided with a plurality of described blowing fans, so that make the distributional stabilityization of the air-flow of the air of discharging from the discharge portion of described blowing fan, described air regulator also possesses control part, and described control part possesses: the sensor that detects the temperature difference of described indoor air sucting inlet and room air supply port; The signal that reception comes from described sensor passes is to the controller of blowing fan transmission frequency modulation signal; And be located on the fan motor that described a plurality of blowing fan comprises, receive frequency modulated signal from described controller, change the frequency modulator of the air quantity of described a plurality of blowing fans.According to disclosed low noise, high efficient air conditioner, can realize the step control of fan motor power, bring the effect that reduces energy.
Description
Technical field
The present invention relates to air regulator, more particularly relate to and stepping to control fan motor power, thereby can bring energy to reduce the improved air quantity control method that possesses low noise, high efficient air conditioner and a plurality of blowing fans of a plurality of blowing fans of effect.
Background technology
Usually, air regulator is for according to application target and the key element such as temperature, humidity, air current flow, purification of keeping room air with optimum condition is carried out the device of refrigeration and heating, purification function, and possesses the device that is used to carry out freeze cycle in order to realize freezing, heating.
At this, freeze cycle generally includes: inscapes such as heat exchanger, compressor, condenser, expansion valve, cross valve, electronic unit, be used for having various with the method for key elements such as optimum condition holding temperature, humidity, but adopt usually by causing the phase change of cold-producing medium, thereby freeze cycle is circulated, the mode of freezing thus, heating.
Below, refrigeration, the heating system of air regulator carried out simple declaration.
At first, if move air regulator with refrigeration mode, then compressed cold-producing medium condensation in outdoor heat converter in compressor, then, it is transferred to expansion gear, and the cold-producing medium that expands in expansion gear carries out heat exchange with room air in indoor heat converter, and the cold-producing medium that carries out heat exchange like this is discharged to the interior space, and the interior space is freezed.
At this moment, the function of indoor heat converter performance condenser, the function of indoor heat converter performance evaporimeter.
Then, the heating mode of air regulator is only opposite on the flow direction of cold-producing medium, roughly the same with described refrigeration mode, so with its omission.
Wherein, under situation by heating mode operation air regulator, the function of indoor heat converter performance condenser, the function of outdoor heat converter performance evaporimeter.
On the other hand, such air regulator comprises: the air that flows into air sucks the unit and will pass through air and sucks the air of unit and the refrigeration and heating unit that cold-producing medium carries out heat exchange.
Fig. 1 represents that the air of air regulator in the past sucks the cutaway view of unit.
With reference to Fig. 1 as can be known, the unit 10 of air suction in the past comprises: the outdoor air suction inlet 1 that sucks the outer gas of fresh keeping chamber; The indoor air sucting inlet 2 of muddy air in the suction chamber; Be positioned at the inboard of indoor-outdoor air suction inlet 1,2, and filter the air cleaner 3 of the impurity that comprises in the air that is inhaled into; Cool off the cooling worm 4 of the temperature of the air that has passed through this air cleaner 3; Make the heating coil 5 of the temperature rising of the air that has passed through air cleaner 3; And blowing fan 6.
At this, blowing fan 6 comprises: inside possesses the shell 8 and the fan motor 9 of impeller 7, and the air of discharging by blowing fan 6 is transferred to the refrigeration and heating unit.
But, sucking in the unit 10 at the air of such air regulator in the past, blowing fan 6 is owing to be large volume, its area shared in air sucks unit 10 is quite big, has limit aspect the noise of generation in reducing blowing fan 6.
On the other hand, under the situation of using single blowing fan 6, existing the air-flow of discharging side to distribute forms inhomogeneously, reduce the problem of the heat generation rate of refrigeration and heating unit, take place under the situation of mechanical breakdown at single blowing fan 6, exist whole air regulator to end, the problem that before maintenance finishes, can not move.
In addition, owing to do not change according to the load of the interior space, and move described single blowing fan 6 simply, therefore cause the big problem of energy loss, thereby can not expect the energy saving effect.
Summary of the invention
The present invention proposes in order to solve described problem, its purpose is to provide a kind of air regulator that possesses a plurality of blowing fans, it can reduce the area that is provided with of air regulator, the air-flow distributional stabilityization of the air that can discharge by blowing fan is even a part of blowing fan generation operation exception also can be carried out operation continuously.
Another object of the present invention is to provide change according to the load of the interior space, the control step motor, thus can regulate the air quantity control method of a plurality of blowing fans of the air quantity of blowing fan.
Other purposes of the present invention and strong point describe following, and by embodiments of the invention as can be known.On the other hand, purpose of the present invention and strong point etc. can realize by mechanism and the combination of representing in the claim scope.
According to the low noise that possesses a plurality of blowing fans of the present invention, high efficient air conditioner as can be known, provide a kind of low noise, high efficient air conditioner that possesses a plurality of blowing fans, possess: the indoor air sucting inlet that sucks room air; The outdoor air suction inlet of suction chamber outer air; The filter of the impurity that comprises in the air of described indoor air sucting inlet and outdoor air suction inlet has been passed through in removal; As the cooling worm, the heating coil that inhaled air are carried out the media of heat exchange; Suck and carry the blowing fan of the air that has passed through described cooling worm, heating coil; And the room air supply port supplied with to the interior space of air that will be transferred, described low noise, the high efficient air conditioner that possesses a plurality of blowing fans is characterised in that, be provided with a plurality of described blowing fans, so that make the distributional stabilityization of the air-flow of the air of discharging from the discharge portion of described blowing fan, described air regulator also possesses control part, and described control part possesses: the sensor that detects the temperature difference of described indoor air sucting inlet and room air supply port; The signal that reception comes from described sensor passes is to the controller of blowing fan transmission frequency modulation signal; And be located on the fan motor that described a plurality of blowing fan comprises, receive frequency modulated signal from described controller, change the frequency modulator of the air quantity of described a plurality of blowing fans.
At this, preferably possess a plurality of blowing fans, it is characterized in that, described blowing fan possesses the impeller that the inhaled air by rotatablely moving is exerted pressure and drives the fan motor of described impeller, suction portion and discharge portion at described impeller also possess a plurality of nozzles and piezometry pipe respectively, so that measure the pressure ratio of the suction and the discharge of described blowing fan.
In addition, preferably also possess misoperation warning portion, described misoperation warning portion is unusual when big in the temperature difference that detects by described sensor, receives the signal from described controller, and sound or light indicator lamp gives the alarm.
The air quantity control method of a plurality of blowing fans of the present invention comprises: the first step that detects the temperature difference of indoor air sucting inlet and room air supply port by sensor; To send second step of signal by the temperature difference that described sensor detects to controller; Third step by the frequency modulator transmission frequency modulation signal of described controller on the motor that is located at blowing fan; According to the signal that sends to described frequency modulator, change the rotating speed of the fan motor of blowing fan, thereby regulate the 4th step of air quantity.
Term that uses in this specification and claims or word are that the meaning institute that is not limited in the dictionary is construable, need the inventor based on the principle that can suitably define the notion of term for the invention of oneself being described, with the meaning and the concept explanation of technological thought according to the invention with up-to-date method.
Thereby, illustrated structure is nothing but a most preferred embodiment of the present invention in embodiment that puts down in writing in this specification and the accompanying drawing, do not represent all technological thoughts of the present invention, therefore, it will be appreciated that to have various equivalents and the variation that replaces them.
Description of drawings
Fig. 1 represents that the air of air regulator in the past sucks the cutaway view of unit.
Fig. 2 is that summary represents that the air of air regulator of the present invention sucks the stereogram of unit.
Fig. 3 is the stereogram of expression impeller of the present invention.
Fig. 4 is the diagram of air quantity control method of a plurality of blowing fans of expression embodiments of the invention.
Among the figure, the 100-air regulator; The 110-indoor air sucting inlet; 112-outdoor air suction inlet; 114-room air supply port; The 120-filter; The 130-cooling worm; The 140-heating coil; The 150-next door; The 151-bolt; The 160-blowing fan; The 161-impeller; 162a, 162b, 162c, 162d-fan motor; The 163-nozzle; 164-piezometry pipe; 165-suction portion; The 166-bell; The 170-control part; The 171-sensor; The 172-controller; The 190-interior space.
The specific embodiment
Fig. 2 is that summary represents that the air of air regulator of the present invention sucks the stereogram of unit, and Fig. 3 is the stereogram of expression impeller of the present invention, and Fig. 4 is the diagram of air quantity control method of a plurality of blowing fans of expression embodiments of the invention.
At first, with reference to Fig. 2 as can be known, air regulator 100 of the present invention comprises: the indoor air sucting inlet 110 that sucks room air; The outdoor air suction inlet 112 of suction chamber outer air; To pass through the filter 120 of the Impurity removal that comprises in the air of described indoor air sucting inlet and outdoor air suction inlet; Cooling worm 130 and heating coil 140 as the media that inhaled air is carried out heat exchange; The air that will pass through described cooling worm 130 and heating coil 140 sucks and carries the blowing fan 160 of described air; And the room air supply port 114 supplied with to the interior space of the air that will carry.
At this, described blowing fan 160 forms a plurality of, with can be with the air-flow distributional stabilityization of the air of discharging from the discharge portion of described blowing fan 160, and described blowing fan 160 usefulness retention mechanisms (not shown) be fixed on the next door 150 that is formed with a plurality of holes 151.
Discharge inhaled air if use a plurality of blowing fans 160 as described above, then can reduce the area that is provided with of air regulator 100 greatly, can solve the problem that when using large-scale fan motor, causes, can keep consistently from the air quantity of the air of described a plurality of blowing fans 160 discharges, thereby, can stably keep flow path.
In addition, described blowing fan 160 possesses impeller 161 that the air that is inhaled into by rotatablely moving is exerted pressure and the fan motor that drives described impeller 161, and suction portion 165 and discharge portion (not shown) at described impeller 161 possess a plurality of nozzles 163 and piezometry pipe 164 respectively, with the suction that can measure described blowing fan 160 and the pressure ratio of discharge.
Specify as followsly with reference to Fig. 3, the impeller 161 of suction portion 165 sides of blowing fan 160 possesses bell (cone throat, 166), and it is formed with a plurality of holes as the connecting path that sucks air and in inside, and utilizes described a plurality of hole and nozzle 163 perforations.At this, described nozzle 163 be positioned at by the suction portion relative position of 165 inhaled airs.
Outer peripheral face at described bell 166 is provided with piezometry pipe 164, and it is connected with described nozzle 163 in order to measure by the flow velocity of suction portion 165 inhaled airs.
Though not shown, also be provided with a plurality of nozzles and piezometry pipe in the discharge portion side.
Square being directly proportional of the wind speed of pressure reduction and inside by described bell 166, therefore, being connected respectively to speed-shifting by the piezometry pipe with the piezometry pipe 164 of described suction portion 165 and described discharge portion is the pressure gauge 180 of pressure, the suction and the discharge pressure ratio of hence one can see that blowing fan.
Described pressure gauge 180 can be confirmed the suction and the discharge pressure ratio of blowing fan in advance, therefore, has the strong point of the reduction of the increase that can prevent noise in advance and efficient.
Fig. 4 is the diagram of air quantity control method of a plurality of blowing fans of expression embodiments of the invention.With reference to accompanying drawing as can be known, comprise the control part 170 and the interior space 190, described control part 170 comprises: the sensor 171 of the difference of the intake air temperature of detection indoor air sucting inlet 110 and the air supply temperature of room air supply port 114; Receive the signal that described sensor 171 transmits, and to the controller 172 of blowing fan transmission frequency modulation signal; Attached to fan motor 162a, the 162b, 162c, the 162d that comprise among described a plurality of blowing fan 160a, 160b, 160c, the 160d, reception changes the frequency modulator of the air quantity of described a plurality of blowing fan 160a, 160b, 160c, 160d from the frequency modulated signal of described controller 172.
Below, divide a plurality of stages to describe to the air quantity control method of a plurality of blowing fans of embodiments of the invention.
At first, a part of interior space 190a in a plurality of interior space 190a, 190b, 190c, 190d has the end user, or have a lot of end users to be present in a part of interior space 190a and when causing load change, detect air fed temperature poor that is drawn into the suction air of indoor air sucting inlet 110 of air regulator 100 and the indoor supply port 114 supplied with to the described interior space 190 from described air regulator 110 from the described interior space 190 by described sensor 171.
Secondly, it is poor that described sensor 171 detects based on the described suction air and the air fed abnormal temperature of the load change of the interior space 190, and send signal to described controller 172.
Then, the frequency modulator transmission frequency modulation signal that possesses to fan motor 162a, 162b, 162c, the 162d of blowing fan 160a, 160b, 160c, 160d by described controller 172, according to the signal that sends to described frequency modulator, change the rotating speed of the fan motor of described blowing fan, regulate air quantity thus.Thereby, do not have the end user or exist under a lot of personnel's the situation at described a part of interior space 160a, can control blowing fan to a part of interior space 190a air-supply.That is, owing to can control a plurality of blowing fans individually, therefore, can realize stepping control based on the fan of the load change of the interior space, can conserve energy.
As mentioned above, though be illustrated according to the embodiment and the accompanying drawing that limit among the present invention, but the present invention is not limited to this, and those of ordinary skills certainly carry out various modifications and distortion in the claim equivalency range of technological thought of the present invention and following record.
As mentioned above, the air quantity control that possesses air regulator and the blowing fan of a plurality of blowing fans of the present invention Method processed provides following effect.
The first, measure the air amount of indoor air sucting inlet and the air supply of room air supply port Temperature difference can realize the stepping control based on the blowing fan of the load change of the interior space, at fan The motor power aspect can reduce energy.
The second, have: use a plurality of blowing fans, can greatly reduce the area that arranges of air regulator Strong point.
The 3rd, have: the volume of fan motor is small-sized, therefore, has and can solve asking of noise The strong point of topic.
The 4th, have: use a plurality of blowing fans, can keep consistently draft capacity, can stablize Keep the strong point of flow path.
The 5th, wind can be equably whole of coil by the rear end that is arranged on blowing fan, therefore, Can improve heat conduction efficiency.
Claims (3)
1. low noise, high efficient air conditioner that possesses a plurality of blowing fans possesses:
Suck the indoor air sucting inlet of room air;
The outdoor air suction inlet of suction chamber outer air;
The filter of the impurity that comprises in the air of described indoor air sucting inlet and outdoor air suction inlet has been passed through in removal;
As the cooling worm, the heating coil that inhaled air are carried out the media of heat exchange;
Suck and carry the blowing fan of the air that has passed through described cooling worm, heating coil; And
The room air supply port that the air that is transferred is supplied with to the interior space,
Described low noise, the high efficient air conditioner that possesses a plurality of blowing fans be characterised in that,
Be provided with a plurality of described blowing fans, so that make the distributional stabilityization of the air-flow of the air of discharging from the discharge portion of described blowing fan,
Described air regulator also possesses control part, and described control part possesses:
Detect the sensor of the temperature difference of described indoor air sucting inlet and room air supply port;
The signal that reception comes from described sensor passes is to the controller of blowing fan transmission frequency modulation signal; And
Be located on the fan motor that described a plurality of blowing fan comprises, receive frequency modulated signal, change the frequency modulator of the air quantity of described a plurality of blowing fans from described controller,
Described blowing fan possesses the impeller that the inhaled air by rotatablely moving is exerted pressure and drives the fan motor of described impeller, suction portion and discharge portion at described impeller also possess a plurality of nozzles and piezometry pipe respectively, so that measure the pressure ratio of the suction and the discharge of described blowing fan.
2. low noise, the high efficient air conditioner that possesses a plurality of blowing fans according to claim 1 is characterized in that,
Also possess misoperation warning portion, described misoperation warning portion is unusual when big in the temperature difference that detects by described sensor, receives the signal from described controller, and sound or light indicator lamp gives the alarm.
3. the air quantity control method of a plurality of blowing fans, be to possess a plurality of blowing fans in the inboard, possess the indoor air sucting inlet that sucks room air and will pass through the air quantity control method of the air of described blowing fan in a side to a plurality of blowing fans of the low noise that possesses a plurality of blowing fans of the room air supply port of indoor supply, high efficient air conditioner, it is characterized in that, comprising:
Detect the first step of the temperature difference of described indoor air sucting inlet and described room air supply port by sensor;
To send second step of signal by the temperature difference that described sensor detects to controller;
Third step by the frequency modulator transmission frequency modulation signal of described controller on the motor that is located at blowing fan;
According to the signal that sends to described frequency modulator, change the rotating speed of the fan motor of blowing fan, thereby regulate the 4th step of air quantity.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20060034724 | 2006-04-17 | ||
| KR1020060034724A KR100644761B1 (en) | 2006-04-17 | 2006-04-17 | An air conditioner equipped with multiple fans characterized in low noise, high efficiency and air flow control method of the multiple fans |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101059261A CN101059261A (en) | 2007-10-24 |
| CN100554804C true CN100554804C (en) | 2009-10-28 |
Family
ID=37654310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100971284A Expired - Fee Related CN100554804C (en) | 2006-04-17 | 2007-04-17 | Possess the air regulator of a plurality of blowing fans and the air quantity control method of this blowing fan |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100644761B1 (en) |
| CN (1) | CN100554804C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130090518A (en) * | 2012-02-06 | 2013-08-14 | 엘지전자 주식회사 | Air handing unit and control method of the same |
| CN105258230B (en) * | 2015-09-30 | 2017-12-19 | 广东美的制冷设备有限公司 | Window air conditioner and its control method |
| KR102125126B1 (en) * | 2017-07-12 | 2020-06-19 | 한양대학교 에리카산학협력단 | Dynamic Elasticity measuring device and method |
| CN109210687B (en) * | 2018-09-21 | 2020-07-31 | 宁波奥克斯电气股份有限公司 | Control method of air conditioning system |
| CN111189153B (en) * | 2018-11-15 | 2021-05-18 | 宁波方太厨具有限公司 | Control method of air purifier |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62125245A (en) | 1985-11-27 | 1987-06-06 | Matsushita Electric Ind Co Ltd | Air flow volume controller of air conditioner |
| JPH06331205A (en) * | 1993-05-20 | 1994-11-29 | Fujitsu General Ltd | Control method for air conditioner |
| JP2001050555A (en) | 1999-08-10 | 2001-02-23 | Shinko Kogyo Co Ltd | Air conditioner |
| JP2002357330A (en) | 2001-03-27 | 2002-12-13 | Toto Ltd | Indoor air conditioner |
| JP2004263922A (en) | 2003-02-28 | 2004-09-24 | Mitsubishi Electric Corp | Air conditioner indoor unit |
| KR100573778B1 (en) | 2005-06-03 | 2006-04-24 | 주식회사 삼화에이스 | An air conditioner equipped with multiple fans characterized in low noise, high efficiency and air flow control method of the multiple fans |
-
2006
- 2006-04-17 KR KR1020060034724A patent/KR100644761B1/en active IP Right Grant
-
2007
- 2007-04-17 CN CNB2007100971284A patent/CN100554804C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR100644761B1 (en) | 2006-11-15 |
| CN101059261A (en) | 2007-10-24 |
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Granted publication date: 20091028 |