CN204628040U - The fan speed change device of window air conditioner - Google Patents
The fan speed change device of window air conditioner Download PDFInfo
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- CN204628040U CN204628040U CN201520152714.4U CN201520152714U CN204628040U CN 204628040 U CN204628040 U CN 204628040U CN 201520152714 U CN201520152714 U CN 201520152714U CN 204628040 U CN204628040 U CN 204628040U
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Abstract
The utility model discloses a kind of fan speed change device of window air conditioner, comprising: motor, the two ends of motor are respectively equipped with the first motor shaft be connected with outdoor fan and the second motor shaft be connected with indoor fan; Gear graduation module, gear graduation model calling is between outdoor fan and the first motor shaft, and gear graduation module comprises: input shaft, and input shaft is coaxially connected with the first motor shaft; Output shaft, output shaft is coaxially connected with outdoor fan; Gear train, gear train is connected between input shaft and output shaft, gear train comprises the gear that multiple transmission is successively connected, at least two gears intermesh and the number of teeth of intermeshing two gears is different, and first gear in the gear that input shaft and output shaft are connected with multiple transmission successively is respectively connected with last gear.According to the fan speed change module of window air conditioner of the present utility model, make outdoor fan just can realize the different of rotating speed from indoor fan when arranging a motor.
Description
Technical field
The utility model relates to window air conditioner technical field, more specifically, relates to a kind of fan speed change device of window air conditioner.
Background technique
Window air conditioner mostly adopts single motor, and indoor wind wheel and outdoor fan blade are arranged on the two ends of same motor shaft simultaneously.Therefore, indoor wind wheel is identical with the rotating speed of outdoor fan blade.But in order to realize different object, need the rotating speed of indoor wind wheel and outdoor fan blade to have any different.
Such as, in order to realize low noise, need the rotating speed reducing indoor wind wheel, but while reduction motor speed, the rotating speed also needing to maintain outdoor fan blade is constant to keep the abundant of condenser heat exchange, guarantee efficiency.Again such as, on condenser area maximized basis, in order to pursue higher efficiency, need the rotating speed improving outdoor wind wheel, to increase air quantity.But now do not improve by motor speed and reach this object, if because the also rotating speed of indoor wind wheel can be caused like this to raise, cause room noise to increase.
In the related, in order to reach the different rotating speeds of indoor wind wheel and outdoor fan blade, usually can adopt dual-motor scheme, i.e. the special motor of indoor wind wheel, outdoor fan blade another motor special.Different air quantity can be reached like this by the rotating speed of adjustment indoor and outdoor motor.But dual-motor scheme has defect, such as, cost is high, and the installation of two motors can be compared and occupied complete machine space.
Model utility content
The utility model is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the utility model proposes a kind of fan speed change device of window air conditioner, namely the fan speed change device of described window air conditioner can realize the speed change of fan under single motor.
According to the fan speed change device of window air conditioner of the present utility model, comprising: motor, the two ends of described motor are respectively equipped with to be connected with outdoor fan the first motor shaft and the second motor shaft of being connected with indoor fan; Gear graduation module, described gear graduation model calling is between described outdoor fan and described first motor shaft, and described gear graduation module comprises: input shaft, and described input shaft is coaxially connected with described first motor shaft; Output shaft, described output shaft is coaxially connected with outdoor fan; Gear train, described gear train is connected between described input shaft and output shaft, described gear train comprises the gear that multiple transmission is successively connected, at least two described gears intermesh and the number of teeth of intermeshing two gears is different, and first gear in the gear that described input shaft and described output shaft are connected with multiple transmission successively is respectively connected with last gear.
According to the fan speed change module of window air conditioner of the present utility model, the gear graduation module arranged makes outdoor fan just can realize the different of rotating speed from indoor fan when arranging a motor, effectively overcome the shortcoming in correlation technique, realize low noise and high energy efficiency in design; Improve according to wind speed simultaneously, while strengthening heat exchange, heat exchanger copper pipe can be reduced, reduce the cost of heat exchanger.
In addition, following additional technical characteristics can also be had according to the fan speed change device of window air conditioner of the present utility model:
According to an embodiment of the present utility model, described gear train comprises the gear that two engagements are connected, and the number of teeth of two gears is different, and one in two gears is set on described input shaft, and another is set on described output shaft.
According to an embodiment of the present utility model, the number of teeth being set in the gear on described input shaft is greater than the number of teeth of the gear be set on described output shaft.
According to an embodiment of the present utility model, described gear train comprises: the first gear, and described first geared sleeve is located on described input shaft; Second gear, described second gear is connected with described first gears meshing; 3rd gear, described 3rd gear is coaxially connected with described second gear by coupling shaft; 4th gear, described 4th geared sleeve is located on described output shaft, and wherein, described first gear, the second gear, the 3rd gear are different with the number of teeth of at least two in the 4th gear.
According to an embodiment of the present utility model, the number of teeth of described first gear is greater than the number of teeth of described second gear.
According to an embodiment of the present utility model, the rotating speed of described output shaft is higher than the rotating speed of described input shaft.
According to an embodiment of the present utility model, a part for described first motor shaft is formed as described input shaft.
According to an embodiment of the present utility model, also comprise housing, receiving cavity is limited with in described housing, the two ends of described housing are respectively equipped with the first axis hole and the second axis hole, described first motor shaft is located in described first axis hole, described output shaft is located in described second axis hole, is provided with supporting walls in described housing, and at least one in described coupling shaft, described input shaft and described output shaft is supported on described supporting walls rotates.
According to an embodiment of the present utility model, described housing comprises lower casing and covers the upper casing on described lower casing, described upper casing comprises the first upper casing and the second upper casing, and described first upper shell cover is combined in above described motor, and described second upper shell cover is combined in above described gear graduation module.
According to an embodiment of the present utility model, described outdoor fan is formed as fan blade, and described indoor fan is formed as wind wheel.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Fig. 1 is the part-structure schematic diagram of the window air conditioner according to the utility model embodiment;
Fig. 2 is the structural representation of structure shown in Fig. 1 after removing upper casing;
Fig. 3 is the plan view of structure shown in Fig. 2.
Reference character:
Motor 10; First motor shaft 11; Second motor shaft 12;
Gear graduation module 20; Input shaft 21; Output shaft 22; Gear train 23; First gear 231; Second gear 232; 3rd gear 233; 4th gear 234; Coupling shaft 235;
Outdoor fan 30; Indoor fan 40;
Upper casing 51; First upper casing 511; Second upper casing 512; Lower casing 52; Supporting walls 53;
Base 60.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
The fan speed change device according to the window air conditioner of the utility model embodiment is described in detail below in conjunction with accompanying drawing.
Shown in Fig. 3, comprise motor 10 and gear graduation module 20 according to the fan speed change device of the window air conditioner of the utility model embodiment.
The two ends of motor 10 are respectively equipped with the first motor shaft 11 and the second motor shaft 12.First motor shaft 11 is connected with outdoor fan 30, and the second motor shaft 12 is connected with indoor fan 40.Gear graduation module 20 is connected between outdoor fan 30 and the first motor shaft 11.Gear graduation module 20 comprises input shaft 21, output shaft 22 and gear train 23.Input shaft 21 is coaxially connected with the first motor shaft 11, and input shaft 21 can with the synchronized rotation of the first motor shaft 11.Output shaft 22 is coaxially connected with outdoor fan 30, and outdoor fan 30 can rotation synchronized with output shaft 22 under the drive of output shaft 22.
Gear train 23 is connected between input shaft 21 and output shaft 22.Gear train 23 comprises the gear that multiple transmission is successively connected.In multiple gear, two gears are had at least to intermesh and the number of teeth of intermeshing two gears is different.Thus, the rotating speed of intermeshing two sizes is namely different, and the multiple gears in gear train 23, in the process of transmission, speed change occur, and first gear that multiple transmission is successively connected realizes different from the rotating speed of last gear.
When first gear in the gear that input shaft 21 and output shaft 22 are connected with multiple transmission successively is respectively connected with last gear, the rotating speed of output shaft 22 changes relative to the rotating speed of input shaft 21, and input shaft 21 is different from the rotating speed of output shaft 22.The rotating speed of input shaft 21 equals the rotating speed of the first motor shaft 11 of motor 10, the i.e. rotating speed of motor 10; The rotating speed of output shaft 22 equals the rotating speed of the first motor shaft 11 at the rotating speed after gear graduation module 20 speed change.
Be understandable that, as required, gear graduation module 20 can speedup also can be slowed down, and makes outdoor fan 30 can higher than the rotating speed of motor 10, also can lower than the rotating speed of motor 10.Different by the velocity ratio arranging meshed gears, different rotating speeds can be realized.
According to the fan speed change module of the window air conditioner of the utility model embodiment, by arranging gear graduation module 20, outdoor fan 30 can be made just can to realize the different of rotating speed from indoor fan 40 when arranging one motor 10, effectively overcome the shortcoming in correlation technique, realize low noise and high energy efficiency in design; Improve according to wind speed simultaneously, while strengthening heat exchange, heat exchanger copper pipe can be reduced, reduce the cost of heat exchanger.This construction cost is lower, structure more simplifies, easy to manufacture.
Specifically, the rotating speed of indoor fan 40 can be reduced, to obtain low noise by reducing motor 10 rotating speed; Can grind by gear graduation the rotating speed that module 20 improves outdoor fan 30 simultaneously, ensure that the heat dissipating capacity of outdoor is enough, guarantee that Energy Efficiency Ratio is up to standard.When room noise does not have surplus, can not improve motor 10 rotating speed, when needing to make high energy efficiency type, on the basis can fixed at indoor fan 40 rotating speed simultaneously, by gear graduation module 20, the rotating speed of outdoor fan 30 is improved, and air quantity increases, thus reaches the requirement of high energy efficiency.
As shown in Figure 1 to Figure 3, fan speed change device can be arranged on base 60.Outdoor fan 30 can be formed as fan blade, and indoor fan 40 can be formed as wind wheel.Certainly, as required, outdoor fan 30 also can be formed as wind wheel, and indoor fan 40 also can be formed as fan blade.
According to embodiments more of the present utility model, gear train 23 comprises the gear that two engagements are connected.One in two gears is set on input shaft 21, and another in two gears is set on output shaft 22.Wherein, the number of teeth of two gears is different.Thus, the rotating speed of two gears is different, different with the rotating speed of output shaft 22 from the input shaft 21 that two gears are connected respectively, and make the rotating speed of outdoor fan 30 different from the rotating speed of motor 10, indoor fan 40 realizes different from the rotating speed of outdoor fan 30.This kind of Standard is convenient, and manufacture is simple and gearshift performance is good.
Alternatively, the number of teeth being set in the gear on input shaft 21 can be greater than the number of teeth of the gear be set on output shaft 22.Thus, after two gears meshing, the rotating speed being set in the gear on input shaft 21 is less than the rotating speed of the gear be set on output shaft 22, and gear graduation module 20 has accelerating function, makes the rotating speed of outdoor fan 30 can higher than the rotating speed of indoor fan 40.
As shown in Figure 1 to Figure 3, in other embodiments of the present utility model, gear train 23 comprises the first gear 231, second gear 232, the 3rd gear 233 and the 4th gear 234.First gear 231 is set on input shaft 21, the first gear 231 can under the drive of input shaft 21 with input shaft 21 with identical rotational speed.Second gear 232 engages with the first gear 231 and is connected.3rd gear 233 is coaxially connected with the second gear 232 by coupling shaft 235, and the 3rd gear 233 is identical with the rotating speed of the second gear 232.4th gear 234 is set on output shaft 22, output shaft 22 under the drive of the 4th gear 234 with the 4th gear 234 with identical rotational speed.
Wherein, the first gear 231, second gear 232, the 3rd gear 233 are different with the number of teeth of at least two in the 4th gear 234.Thus, through the transmission of four gears, output shaft 22 can be made to reach different from the rotating speed of input shaft 21.Such as, when the number of teeth of the first gear 231 is greater than the number of teeth of the second gear 232, can the rotating speed of output shaft 22 be made by the number of teeth relation between adjustment the 3rd gear 233 and the 4th gear 234 higher than the rotating speed of input shaft 21, while reduction room noise, take into account high energy efficiency.
Specifically, as shown in Figure 2, the second gear 232 is coaxial with the 3rd gear 233, and because the external diameter of the second gear 232 to the first gear 231 is little, the number of teeth is few.Therefore, the rotating speed of the second gear 232 can higher than the rotating speed of the first gear 231, and the rotating speed of the 3rd gear 233 is consistent with the rotating speed of the 4th gear 234.By adjusting size and the number of teeth of each gear, the rotating speed (rotating speed of=indoor fan 40) of rotating speed (rotating speed of the=the second gear 232) > first gear 231 of rotating speed >=the 3rd gear 233 of the 4th gear 234 can be made.
Because the 4th gear 234 is connected with outdoor fan 30 by output shaft 22.Therefore, the rotating speed of rotating speed=the 4th gear 234 of outdoor fan 30.Thus the rotating speed of rotating speed > first gear 231 of outdoor fan 30 can be realized, the i.e. rotating speed of the rotating speed > indoor fan 40 of outdoor fan 30, which achieves the designing requirement of rotating speed higher than the rotating speed of indoor fan 40 of outdoor fan 30.
If need the rotating speed realizing more different indoor fans 40 and outdoor fan 30, then can by change second gear 232 and the shape of the 3rd gear 233 and the mounting point of axle, make the second gear 232 after changing form parameter and the 3rd gear 233 can accurately respectively with the engaging of the first gear 231 and the 4th gear 234.
In addition, shown in Fig. 3, in the structure arranging four gears, the first motor shaft 11, input shaft 21 can realize coaxial with output shaft 22.Thus, the rotating speed of outdoor fan 30 is while realization changes, can also ensure outdoor fan 30 be in motor 10 and the coaxial position of indoor fan 40 on rotate, the position of outdoor fan 30 can not change because of the setting of gear graduation module 20, thus the change of other structures of reduction window air conditioner that can try one's best, structural behaviour is good.
According to embodiments more of the present utility model, a part for the first motor shaft 11 can be formed as input shaft 21.That is, input shaft 21 is made up of a part for the first motor shaft 11.Thus, input shaft 21 and the first motor shaft 11 form as one, and additionally separately can arrange input shaft 21 again, structure is simpler, and manufacturing is easier.
Shown in Fig. 3, fan speed change device also comprises housing.Be limited with receiving cavity in housing, the two ends of housing are respectively equipped with the first axis hole and the second axis hole.Motor 10 and gear graduation module 20 are located in receiving cavity, and the first motor shaft 11 wears out from the first axis hole, and output shaft 22 wears out in the second axis hole.Housing can play a protective role to motor 10 and gear graduation module 20, improves the working life of fan speed change device.
Further, can arrange supporting walls 53 in housing, at least one in coupling shaft 235, input shaft 21 and the first motor shaft 11 can be supported on supporting walls 53 rotates.Thus, the stability of gear graduation module 20 can be improved.Wherein, supporting walls 53 can arrange through hole, coupling shaft 235 can be located in through hole, to retrain fixed connection shaft 235, improves the stability of gear graduation module 20 further.In the same manner, the position that on supporting walls 53, the central axis of input shaft 21 and output shaft 22 passes also can arrange through hole, the end of input shaft 21 and output shaft 22 all can be plugged in this through hole, thus makes input shaft 21 more steady with the rotation of output shaft 22.
As depicted in figs. 1 and 2, housing can comprise lower casing 52 and cover the upper casing 51 on lower casing 52.When needs overhaul motor 10 or gear graduation module 20, upper casing 51 can be opened, the gear graduation module 20 of motor 10 be exposed, carries out inspection operation to facilitate.
Further, as shown in Figure 1, upper casing 51 can comprise the first upper casing 511 and the second upper casing 512, first upper casing 511 covers above motor 10, and the second upper casing 512 covers above gear graduation module 20.First upper casing 511 and the second upper casing 512 can separately open and close.Thus, when only needing to process in motor 10 and gear graduation module 20, the first upper casing 511 or the second lower casing 52 can being opened targetedly, another parts can not be had influence on, protectiveness and good operation performance when operating.
In sum, realize low noise and maintain outdoor high rotation speed operation maintaining high energy efficiency for maintaining indoor slow-speed of revolution running, fan speed change device according to the utility model embodiment has established gear graduation module 20, achieves the object adopting single motor 10 to realize two kind different rotating speeds.
According to the fan speed change device of the window air conditioner of the utility model embodiment other form and operation be known for the person of ordinary skill of the art, be not described in detail at this.
In description of the present utility model, it will be appreciated that, term " on ", D score, "front", "rear", " interior ", " outward ", the orientation of the instruction such as " axis " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.
In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment, revises, replace and modification in scope of the present utility model.
Claims (10)
1. a fan speed change device for window air conditioner, is characterized in that, comprising:
Motor, the two ends of described motor are respectively equipped with the first motor shaft be connected with outdoor fan and the second motor shaft be connected with indoor fan;
Gear graduation module, described gear graduation model calling is between described outdoor fan and described first motor shaft, and described gear graduation module comprises:
Input shaft, described input shaft is coaxially connected with described first motor shaft;
Output shaft, described output shaft is coaxially connected with outdoor fan;
Gear train, described gear train is connected between described input shaft and output shaft, described gear train comprises the gear that multiple transmission is successively connected, at least two described gears intermesh and the number of teeth of intermeshing two gears is different, and first gear in the gear that described input shaft and described output shaft are connected with multiple transmission successively is respectively connected with last gear.
2. the fan speed change device of window air conditioner according to claim 1, it is characterized in that, described gear train comprises the gear that two engagements are connected, and the number of teeth of two gears is different, one in two gears is set on described input shaft, and another is set on described output shaft.
3. the fan speed change device of window air conditioner according to claim 2, is characterized in that, the number of teeth being set in the gear on described input shaft is greater than the number of teeth of the gear be set on described output shaft.
4. the fan speed change device of window air conditioner according to claim 1, is characterized in that, described gear train comprises:
First gear, described first geared sleeve is located on described input shaft;
Second gear, described second gear is connected with described first gears meshing;
3rd gear, described 3rd gear is coaxially connected with described second gear by coupling shaft;
4th gear, described 4th geared sleeve is located on described output shaft, and wherein, described first gear, the second gear, the 3rd gear are different with the number of teeth of at least two in the 4th gear.
5. the fan speed change device of window air conditioner according to claim 4, is characterized in that, the number of teeth of described first gear is greater than the number of teeth of described second gear.
6. the fan speed change device of window air conditioner according to claim 5, is characterized in that, the rotating speed of described output shaft is higher than the rotating speed of described input shaft.
7. the fan speed change device of window air conditioner according to claim 1, is characterized in that, a part for described first motor shaft is formed as described input shaft.
8. the fan speed change device of window air conditioner according to claim 4, it is characterized in that, also comprise housing, receiving cavity is limited with in described housing, the two ends of described housing are respectively equipped with the first axis hole and the second axis hole, and described first motor shaft is located in described first axis hole, and described output shaft is located in described second axis hole, be provided with supporting walls in described housing, at least one in described coupling shaft, described input shaft and described output shaft is supported on described supporting walls rotates.
9. the fan speed change device of window air conditioner according to claim 8, it is characterized in that, described housing comprises lower casing and covers the upper casing on described lower casing, described upper casing comprises the first upper casing and the second upper casing, described first upper shell cover is combined in above described motor, and described second upper shell cover is combined in above described gear graduation module.
10. the fan speed change device of the window air conditioner according to any one of claim 1-9, it is characterized in that, described outdoor fan is formed as fan blade, described indoor fan is formed as wind wheel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520152714.4U CN204628040U (en) | 2015-03-17 | 2015-03-17 | The fan speed change device of window air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520152714.4U CN204628040U (en) | 2015-03-17 | 2015-03-17 | The fan speed change device of window air conditioner |
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| CN204628040U true CN204628040U (en) | 2015-09-09 |
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| CN201520152714.4U Active CN204628040U (en) | 2015-03-17 | 2015-03-17 | The fan speed change device of window air conditioner |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106136966A (en) * | 2016-09-28 | 2016-11-23 | 衢州福创工业设计有限公司 | The coaxial two speed juice extractors have fast-crushing concurrently, extruding at a slow speed |
| CN107992001A (en) * | 2017-11-24 | 2018-05-04 | 卫星电子（中山）有限公司 | A kind of device easy to control ceiling fan air-conditioning window |
| CN108466906A (en) * | 2018-04-23 | 2018-08-31 | 快意电梯股份有限公司 | Elevator fan assembly |
| CN108953198A (en) * | 2018-07-05 | 2018-12-07 | 浙江理工大学 | A kind of intelligent speed-regulating electric fan |
| CN109236686A (en) * | 2018-09-10 | 2019-01-18 | 青岛海尔空调器有限总公司 | cross flow fan and air conditioner |
| CN112503642A (en) * | 2020-11-20 | 2021-03-16 | 珠海格力电器股份有限公司 | Single motor gear driven window type air conditioner |
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2015
- 2015-03-17 CN CN201520152714.4U patent/CN204628040U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106136966A (en) * | 2016-09-28 | 2016-11-23 | 衢州福创工业设计有限公司 | The coaxial two speed juice extractors have fast-crushing concurrently, extruding at a slow speed |
| CN107992001A (en) * | 2017-11-24 | 2018-05-04 | 卫星电子（中山）有限公司 | A kind of device easy to control ceiling fan air-conditioning window |
| CN108466906A (en) * | 2018-04-23 | 2018-08-31 | 快意电梯股份有限公司 | Elevator fan assembly |
| CN108466906B (en) * | 2018-04-23 | 2023-11-24 | 快意电梯股份有限公司 | Elevator fan device |
| CN108953198A (en) * | 2018-07-05 | 2018-12-07 | 浙江理工大学 | A kind of intelligent speed-regulating electric fan |
| CN109236686A (en) * | 2018-09-10 | 2019-01-18 | 青岛海尔空调器有限总公司 | cross flow fan and air conditioner |
| CN109236686B (en) * | 2018-09-10 | 2020-06-30 | 青岛海尔空调器有限总公司 | Cross-flow fan and air conditioner |
| CN112503642A (en) * | 2020-11-20 | 2021-03-16 | 珠海格力电器股份有限公司 | Single motor gear driven window type air conditioner |
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