Motor device and air conditioner with same

Abstract

The utility model provides a motor device and an air conditioner having the same, the motor device of the utility model comprises a motor body, an end cover and a protection part, the output end of a driving shaft of the motor body passes through the end cover, the output end of the driving shaft extends to one side of the end cover far away from the motor body, and the end cover is fixedly installed on the motor body; the motor body is sleeved with the protection part, and the output end of the driving shaft and the end cover are located in the protection part. The protection part is used for shielding the output end of the driving shaft and the end cover, and the output end of the driving shaft is connected with the protection part; the output end of the driving shaft is connected with a load through a protection part; when the motor body operates, the driving shaft drives the protection component to rotate. The motor device effectively solves the technical problem that in the prior art, water vapor easily submerges into a closed area between a motor body and an end cover from a gap of the end cover, so that parts in the motor are easily eroded by the water vapor.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor device and an air conditioner having the same. Background Art

[0002] In the prior art, the motor shaft of the motor extends through the motor end cover, and the motor end cover and the motor shaft are connected by a bearing. At the same time, the motor end cover and the motor body are fixed by methods such as buckling, riveting, screw fixing, etc. It can be seen that the waterproof problem of the air conditioner motor mainly focuses on the sealing between the motor shaft extension and the end cover. Although the connection method between the motor and the end cover in the prior art can provide a certain sealing effect, in order to ensure the reliable rotation of the motor shaft, there is usually a gap between the end cover and the bearing, which lays a hidden danger for the invasion of external water vapor.

[0003] In particular, when the motor is subject to high humidity, rain and other working environments, water can easily penetrate into the enclosed area between the motor body and the end cover through the end cover gap. Once water vapor penetrates into the enclosed area between the motor body and the end cover through the end cover gap, it is difficult to evaporate naturally. As the ambient temperature fluctuates, the accumulated water vapor can easily condense into liquid water, and then penetrate into the core area of the motor through tiny gaps in the bearings. The windings, bearings and other components inside the motor are extremely sensitive to moisture. The intrusion of moisture will accelerate the oxidation and corrosion of metal parts, leading to problems such as reduced insulation performance and rust and jamming of bearings, which seriously affect the performance and service life of the motor. Utility Model Content

[0004] The purpose of the utility model is to overcome the above technical deficiencies and provide a motor device and an air conditioner having the same, so as to solve the technical problem in the prior art that water vapor can easily penetrate into the closed area between the motor body and the end cover through the gap between the end cover, thereby making the internal parts of the motor easily corroded by water vapor.

[0005] To achieve the above technical objectives, according to one aspect of the utility model: a motor device is provided, comprising: a motor body, an end cover and a protective component, the output end of the drive shaft of the motor body passes through the end cover, and the output end of the drive shaft extends to the side of the end cover away from the motor body, and the end cover is fixedly installed on the motor body; the protective component is sleeved on the motor body, and the output end and the end cover of the drive shaft are located in the protective component; the protective component is used to shield the output end and the end cover of the drive shaft, and the output end of the drive shaft is connected to the protective component; the output end of the drive shaft is connected to the load through the protective component; wherein, when the motor body is running, the drive shaft drives the protective component to rotate.

[0006] Further, a placement space is provided inside the protection component. At least part of the end cap and the motor body are arranged inside the placement space, and the output end of the drive shaft passes through the placement space and is connected to the protection component. Wherein, there are gaps between the inner wall of the placement space and the housing of the motor body and between the inner wall of the placement space and the end cap.

[0007] Further, the protection component includes: a drive shaft and a housing. An installation groove adapted to the output end of the drive shaft is provided on the drive shaft. The output end of the drive shaft is installed in the installation groove so that the output end of the drive shaft is connected to the drive shaft. The extending direction of the axis of the drive shaft coincides with the extending direction of the axis of the drive shaft. The output end of the drive shaft is connected to the protection component through the installation groove. The housing is connected to the drive shaft. The housing surrounds the drive shaft. A placement space is provided inside the housing. The installation groove communicates with the placement space. The output end of the drive shaft passes through the placement space and is installed in the installation groove.

[0008] Further, an external thread with a preset length is provided on the output end of the drive shaft, and an internal thread adapted to the external thread is provided in the installation groove, so that the output end of the drive shaft is installed in the installation groove through the thread fit of the external thread and the internal thread.

[0009] Further, an installation port communicating with the placement space is provided on one side of the protection component away from the output end of the drive shaft. At least part of the motor body and the end cap are arranged inside the placement space through the installation port. The protection component includes: a centrifugal fan structure. The centrifugal fan structure is arranged on the inner wall of the placement space and is close to the installation port. The centrifugal fan structure faces the housing of the motor body. There is a gap between the centrifugal fan structure and the housing of the motor body. When the drive shaft rotates, it drives the centrifugal fan structure to rotate, so that the air flow moves in a direction away from the installation port.

[0010] Further, the end cap is a multi-stage stepped structure.

[0011] Further, the end cap includes: an end cap body, a first boss and a second boss. The end cap body is fixedly connected to the motor body. A first installation cavity is provided inside the end cap body. The first boss is arranged on the end face of the end cap body away from the housing of the motor body. The center line of the first boss coincides with the center line of the end cap body. A second installation cavity is provided inside the first boss. The second installation cavity communicates with the first installation cavity. The second boss is arranged on the first boss. At least part of the second boss is located inside the second installation cavity. The center line of the second boss coincides with the center line of the first boss. A third installation cavity adapted to the bearing is provided inside the second boss. The third installation cavity communicates with the second installation cavity. Wherein, the shortest straight-line distance from the outer edge of the second boss to the axis of the drive shaft, the shortest straight-line distance from the outer edge of the first boss to the axis of the drive shaft, and the shortest straight-line distance from the outer edge of the end cap body to the axis of the drive shaft increase in sequence.

[0012] Further, a groove is provided on the side wall of the first boss, and the groove extends along the circumferential direction of the first boss to form a continuous annular structure.

[0013] Further, the motor device further includes: a first humidity sensor and a second humidity sensor. The first humidity sensor is disposed on the housing of the motor body, and the first humidity sensor is located on one side of the housing of the motor body close to the end cover; the first humidity sensor is used to obtain the humidity between the end cover and the protective member; the second humidity sensor is disposed on the housing of the motor body, and the second humidity sensor is spaced apart from the first humidity sensor along the axial direction of the drive shaft. The second humidity sensor is located inside the protective member and on the side away from the end cover; the second humidity sensor is used to obtain the humidity between the protective member and the housing of the motor body.

[0014] According to another aspect of the present invention, an air conditioner is provided, including: a motor device, and the motor device is the above-mentioned motor device.

[0015] Beneficial effects:

[0016] By applying the technical solution of the utility model, the motor device provided by the utility model is provided with a motor body, an end cover and a protective component, and the protective component is sleeved on the motor body, the output end and the end cover of the drive shaft are located in the protective component, and the protective component is used to shield the output end and the end cover of the drive shaft. It can be seen that by sleeved on the motor body, the protective component forms a physical barrier, which effectively isolates the external water vapor, dust and other impurities, significantly enhances the sealing performance of the motor, and protects the inside of the motor from the external environment. And by shielding the output end and the end cover of the drive shaft by the protective component, it can effectively prevent water vapor from directly contacting the key parts of the motor, greatly reduce the failure rate of the motor caused by water vapor erosion, and improve the stability and reliability of the motor operation. And avoid direct contact between the inside of the motor and the external environment and water vapor erosion, reduce the corrosion and aging of the internal parts of the motor, reduce the maintenance frequency and complexity caused by water vapor erosion, thereby extending the service life of the motor, reducing the maintenance and replacement costs, improving the maintenance efficiency and improving the waterproof performance of the motor device. In addition, the output end of the drive shaft is connected to the protective component; and the output end of the drive shaft is connected to the load through the protective component; and when the motor body is running, the drive shaft drives the protective component to rotate. Thus, the protective component not only protects the motor body, but also transmits power as an intermediate connector, so that the motor device can more easily adapt to different types of loads or change the position and direction of the load when necessary, without having to directly modify the drive shaft. At the same time, when the motor body is running, the drive shaft drives the protective component to rotate, and the rotating protective component forms a dynamic sealing surface. This dynamic sealing mechanism can further improve the protection effect. The motor device effectively solves the technical problem in the prior art that water vapor can easily penetrate into the enclosed area between the motor body and the end cover through the gap between the end covers, thereby making the internal parts of the motor easily corroded by water vapor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of an embodiment of the motor device of the utility model is shown;

[0018] Figure 2 The figure shows a schematic structural diagram of an end cover in an embodiment of a motor device of the utility model.

[0019] The above drawings include the following reference numerals:

[0020] 1. Motor body; 11. Driving shaft; 110. External thread; 12. Housing; 2. End cover; 21. End cover body; 210. First installation cavity; 22. First boss; 220. Second installation cavity; 221. Groove; 23. Second boss; 230. Third installation cavity; 3. Protection component; 30. Placing space; 31. Cover body; 32. Transmission shaft; 320. Installation groove; 321. Internal thread; 322. First shaft section; 323. Second shaft section; 33. Installation port; 34. Centrifugal fan structure; 341. Fan blade; 35. Positioning stop; 4. First humidity sensor; 5. Second humidity sensor. Detailed implementation manner

[0021] In order to enable those skilled in the art of the present technology to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0022] Please refer to Figures 1 to 2 , according to the embodiment of the present utility model, the present utility model provides a motor device, including: a motor body 1, an end cover 2 and a protection component 3. The output end of the driving shaft 11 of the motor body 1 passes through the end cover 2, and the output end of the driving shaft 11 extends to the side of the end cover 2 away from the motor body 1. The end cover 2 is fixedly installed on the motor body 1; the protection component 3 is sleeved on the motor body 1, and the output end of the driving shaft 11 and the end cover 2 are located inside the protection component 3; the protection component 3 shields the output end of the driving shaft 11 and the end cover 2, and the output end of the driving shaft 11 is connected to the protection component 3; the output end of the driving shaft 11 is connected to a load through the protection component 3; wherein, when the motor body 1 operates, the driving shaft 11 drives the protection component 3 to rotate.

[0023] It can be seen that the motor device provided by the utility model is provided with a motor body 1, an end cover 2 and a protective component 3, and the protective component 3 is sleeved on the motor body 1, the output end of the drive shaft 11 and the end cover 2 are located in the protective component 3, and the protective component 3 is used to shield the output end and the end cover 2 of the drive shaft 11. It can be seen that the protective component 3 is sleeved on the motor body 1, so that the protective component 3 forms a physical barrier, which effectively isolates the external water vapor, dust and other impurities, significantly enhances the sealing performance of the motor, and protects the inside of the motor from the external environment. And by shielding the output end and the end cover 2 of the drive shaft 11 by the protective component 3, it can effectively prevent water vapor from directly contacting the key parts of the motor, greatly reduce the failure rate of the motor caused by water vapor erosion, and improve the stability and reliability of the motor operation. And avoid the direct contact between the inside of the motor and the external environment and water vapor erosion, reduce the corrosion and aging of the internal parts of the motor, reduce the maintenance frequency and complexity caused by water vapor erosion, thereby extending the service life of the motor, reducing the maintenance and replacement costs, improving the maintenance efficiency and improving the waterproof performance of the motor device.

[0024] In addition, the output end of the drive shaft 11 is connected to the protective component 3; and the output end of the drive shaft 11 is connected to the load through the protective component 3; and when the motor body 1 is running, the drive shaft 11 drives the protective component 3 to rotate. In this way, the protective component 3 not only protects the motor body 1, but also transmits power as an intermediate connector, so that the motor device can more easily adapt to different types of loads or change the position and direction of the load when necessary through the protective component 3, without having to directly modify the drive shaft. At the same time, when the motor body 1 is running, the drive shaft 11 drives the protective component 3 to rotate, and the rotating protective component 3 forms a dynamic sealing surface. This dynamic sealing mechanism can further improve the protection effect. The motor device effectively solves the technical problem in the prior art that water vapor can easily penetrate into the enclosed area between the motor body and the end cover from the gap between the end covers, thereby making the internal parts of the motor easily corroded by water vapor.

[0025] Specifically, Figure 1As shown, the protective component 3 has a placement space 30 inside. At least part of the end cap 2 and the motor body 1 are arranged inside the placement space 30, and the output end of the drive shaft 11 passes through the placement space 30 and is connected to the protective component 3. Among them, there are gaps between the inner wall of the placement space 30 and the housing 12 of the motor body 1 and between the inner wall of the placement space 30 and the end cap 2. With such a structural arrangement, by providing the placement space 30 inside the protective component 3, the protective component 3 can cover at least part of the end cap 2, the motor body 1, and the gap between the end cap and the drive shaft, thereby further improving the waterproof performance of the motor device and preventing abnormal conditions of the internal components of the motor body 1 due to water vapor erosion. At the same time, there are gaps between the inner wall of the placement space 30 and the housing 12 of the motor body 1 and between the inner wall of the placement space 30 and the end cap 2. When the drive shaft 11 rotates to drive the protective component 3 to rotate, it can prevent friction between the protective component 3 and the end cap 2 and between the protective component 3 and the housing 12 of the motor body 1, thereby avoiding affecting the normal operation of the motor.

[0026] In this embodiment, the specific structure of the protective component 3 is as Figure 1 As shown, the protective component 3 includes a transmission shaft 32 and a cover body 31. An installation groove 320 adapted to the output end of the drive shaft 11 is provided on the transmission shaft 32. The output end of the drive shaft 11 is installed in the installation groove 320 so that the output end of the drive shaft 11 is connected to the transmission shaft 32. The axial extension direction of the drive shaft 11 coincides with the axial extension direction of the transmission shaft 32. The output end of the drive shaft 11 is connected to the protective component 3 through the installation groove 320. The cover body 31 is connected to the transmission shaft 32. The cover body 31 is arranged around the transmission shaft 32. A placement space 30 is provided inside the cover body 31. The installation groove 320 communicates with the placement space 30. The output end of the drive shaft 11 passes through the placement space 30 and is installed in the installation groove 320. With such a structural arrangement, by providing the transmission shaft 32, and the transmission shaft 32 is connected to the output end of the drive shaft 11 through the installation groove 320 inside it, the transmission shaft 32 is used as an intermediate transmission part for power transmission. The drive shaft 11 provides power to the load through the transmission shaft 32. Thus, the motor device can more easily adapt to different types of loads or change the position and direction of the load when needed. At the same time, by providing the cover body 31, and the cover body 31 is connected to the transmission shaft 32, the cover body 31 is arranged around the transmission shaft 32, and the placement space 30 inside the cover body 31 communicates with the installation groove 320. Then, a protective cover is provided for at least part of the motor body 1, the end cap, and the output end of the drive shaft 11 through the cover body 31 and the transmission shaft 32, further preventing water vapor or other substances from entering the inside of the motor body 1 from the connection gap between the end cap and the motor body 1. Thus, it further protects the motor body from being invaded by external dust, moisture, corrosive substances, etc., and extends the service life of the motor device.

[0027] Further, the transmission shaft 32 is located on the side of the housing 31 away from the motor body 1. An installation groove 320 is provided on the end face of the transmission shaft 32 close to the housing 31 (i.e., on the end face of the input end of the transmission shaft 32). One end of the transmission shaft 32 with the installation groove 320 (i.e., on the end face of the input end of the transmission shaft 32) is located in the placement space 30 or on the end face of the housing 31 away from the motor body 1, and the installation groove 320 communicates with the placement space 30. The output end of the drive shaft 11 passes through the placement space 30 and is installed in the installation groove 320, so that the output end of the drive shaft 11 is connected to the transmission shaft 32. The end of the transmission shaft 32 away from the drive shaft 11 (i.e., the output end of the transmission shaft 32) is connected to the load, so that the output end of the drive shaft 11 is connected to the load through the transmission shaft 32.

[0028] Further, the transmission shaft 32 is a stepped shaft. The transmission shaft 32 has a first shaft section 322 and a second shaft section 323. The first shaft section 322 is close to the housing 31. The first shaft section 322 and the second shaft section 323 are arranged in sequence along the direction from the input end of the transmission shaft 32 to the output end of the transmission shaft 32. The diameter of the first shaft section 322 is larger than that of the second shaft section 323, and the second shaft section 323 is the output end of the transmission shaft 32. The second shaft section 323 is connected to the load.

[0029] Preferably, threads are provided on the second shaft section 323 to facilitate detachable connection with the load.

[0030] Further, as Figure 1 shown, a positioning washer 35 is provided on the transmission shaft 32. The positioning washer 35 is used to accurately position the load installed on the transmission shaft 32, ensure the correct position of the load on the transmission shaft 32, and prevent axial movement.

[0031] Preferably, the positioning washer 35 is sleeved on the first shaft section 322.

[0032] Preferably, the diameters of the first shaft section 322 and the second shaft section 323 of the transmission shaft 32 can be specified according to the connection requirements of different loads, or the structure of the transmission shaft 32 can be changed, thereby improving the applicability and generalization of the motor device and reducing the motor modification cost.

[0033] Specifically, as Figure 1As shown, an external thread 110 with a preset length is provided at the output end of the drive shaft 11, and an internal thread 321 adapted to the external thread 110 is provided in the mounting groove 320, so that the output end of the drive shaft 11 is mounted in the mounting groove 320 through the thread fit between the external thread 110 and the internal thread 321. With such a structural arrangement, while the drive shaft 11 is detachably connected to the protection component 3 through the thread fit, the connection between the drive shaft 11 and the protection component 3 is ensured to be firm. And by providing an external thread 110 with a preset length at the output end of the drive shaft 11, an internal thread 321 adapted to the external thread 110 is provided in the mounting groove 320, which can effectively control the distance between the end cover 2 and the inner wall of the placement space 30, so that the end cover 2 does not contact the inner wall of the placement space 30, enabling the drive shaft to operate normally.

[0034] In the above, the preset length refers to the length set according to the design requirements, so as to ensure the firm connection between the drive shaft 11 and the protection component 3 while the end cover 2 does not contact the inner wall of the placement space 30.

[0035] Preferably, the drive shaft 11 of the motor body 1 is an ultra-short shaft motor, and it is a standardized ultra-short shaft motor, thereby improving the production efficiency of the motor body 1.

[0036] Furthermore, the transmission shaft 32 and the housing 31 are integrally formed.

[0037] Specifically, as Figure 1As shown in the figure, on one side of the protective component 3 away from the output end of the drive shaft 11, there is an installation port 33 communicating with the placement space 30, and at least part of the motor body 1 and the end cover 2 are arranged in the placement space 30 through the installation port 33; the protective component 3 includes: a centrifugal impeller structure 34, the centrifugal impeller structure 34 is arranged on the inner wall of the placement space 30, and the centrifugal impeller structure 34 is close to the installation port 33; the centrifugal impeller structure 34 faces the housing 12 of the motor body 1, and there is a gap between the centrifugal impeller structure 34 and the housing 12 of the motor body 1. When the drive shaft 11 rotates, it drives the centrifugal impeller structure 34 to rotate, so that the air flow moves in a direction away from the installation port 33. With such a structural arrangement, the centrifugal impeller structure 34 is arranged on the inner wall of the placement space 30, and the centrifugal impeller structure 34 is close to the installation port 33. Furthermore, when the protective component 3 rotates with the drive shaft 11, the centrifugal impeller structure 34 rotates, thereby generating a negative pressure area in its rotation area, prompting air to be inhaled from the installation port 33 and pushing the air flow to flow in a direction away from the installation port 33. This can effectively guide external cold air into the placement space 30, accelerate the cooling of the motor body 1, improve the heat dissipation efficiency, enable the temperature of the motor body 1 to be more effectively controlled, prevent overheating, extend the service life of the motor, and at the same time keep the motor performance stable. And by controlling the direction of the air flow, it is possible to prevent dust and impurities from directly entering the motor through the installation port 33, reduce the wear and faults of internal components, and further improve the waterproof ability of the motor device. In addition, there is a gap between the centrifugal impeller structure 34 and the housing 12 of the motor body 1, which can effectively prevent friction between the centrifugal impeller structure 34 and the housing 12 of the motor body 1 and avoid affecting the rotation of the centrifugal impeller structure 34.

[0038] Furthermore, the centrifugal impeller structure 34 is composed of a plurality of impeller blades 341. The plurality of impeller blades 341 are divided into three groups and are arranged at intervals along the axial direction of the drive shaft 11 on the inner wall of the placement space 30. And the plurality of impeller blades 341 in each group are arranged at intervals along the circumferential direction of the cover body 31.

[0039] Specifically, as Figure 1 and Figure 2 shown, the end cover 2 is a multi-stage stepped structure. With such a structural arrangement, designing the end cover 2 as a multi-stage stepped structure plays a role of physical blockage, making it difficult for direct water flow to enter the motor interior in a straight line. The water flow needs to bypass multiple obstacles, which increases the difficulty of water molecule penetration. And the multi-stage steps can be designed to drain water naturally downward or outward, reducing the accumulation of water at the connection between the end cover 2 and the housing 12, thereby reducing the risk of leakage.

[0040] In this embodiment, the specific structure of the end cover 2 is, as Figure 1 and Figure 2As shown in the figure, the end cover 2 includes: an end cover body 21, a first boss 22, and a second boss 23. The end cover body 21 is fixedly connected to the motor body 1. There is a first installation cavity 210 inside the end cover body 21. The first boss 22 is arranged on the end face of the end cover body 21 away from the housing 12 of the motor body 1. The center line of the first boss 22 coincides with the center line of the end cover body 21. A second installation cavity 220 is provided inside the first boss 22, and the second installation cavity 220 communicates with the first installation cavity 210. The second boss 23 is arranged on the first boss 22, and at least part of the second boss 23 is located inside the second installation cavity 220. The center line of the second boss 23 coincides with the center line of the first boss 22. A third installation cavity 230 adapted to the bearing is provided inside the second boss 23, and the third installation cavity 230 communicates with the second installation cavity 220. Among them, the shortest straight-line distance from the outer edge of the second boss 23 to the axis of the drive shaft 11, the shortest straight-line distance from the outer edge of the first boss 22 to the axis of the drive shaft 11, and the shortest straight-line distance from the outer edge of the end cover body 21 to the axis of the drive shaft 11 increase in sequence. With such a structural arrangement, when the drive shaft 11 is arranged vertically upward, the end cover body 21, the first boss 22, and the second boss 23 of the end cover 2 will gradually rise. Thus, when water enters the end cover, through the multi-stage step structure, the water will diffuse around through the first boss 22 and the second boss 23, effectively preventing water from entering the interior of the motor body 1 through the gap between the end cover 2 and the drive shaft 11. When the drive shaft 11 is horizontally installed, the end cover body 21, the first boss 22, and the second boss 23 are arranged in sequence in the direction towards the transmission shaft 32, and the shortest straight-line distance from the outer edge of the second boss 23 to the axis of the drive shaft 11, the shortest straight-line distance from the outer edge of the first boss 22 to the axis of the drive shaft 11, and the shortest straight-line distance from the outer edge of the end cover body 21 to the axis of the drive shaft 11 increase in sequence. Thus, when water enters the end cover, the first boss 22 and the second boss 23 can still serve as physical barriers to block rainwater or splashing water from directly entering the interior of the motor body 1. The water will be guided to flow along the edge of the boss to both sides, away from the gap between the end cover 2 and the drive shaft 11, thereby effectively preventing water from entering the interior of the motor body 1 through the gap between the end cover 2 and the drive shaft 11.

[0041] Further, the bearing is sequentially arranged in the third installation cavity 230 through the first installation cavity 210 and the second installation cavity 220.

[0042] Further, the first boss 22 protrudes from the end cover body 21, and the second boss 23 protrudes from the first boss 22.

[0043] Further, the first boss 22 and the end cover body 21 are transitioned by a chamfer, and the second boss 23 and the first boss 22 are also transitioned by a chamfer, which can further guide the water and make the water flow more smoothly.

[0044] Specifically, asFigure 1 and Figure 2 As shown in Figure 2 , a groove 221 is provided on the side wall of the first boss 22. The groove 221 extends along the circumferential direction of the first boss 22, and the groove 221 forms a continuous annular structure. With such a structural arrangement, a groove 221 is provided on the side wall of the first boss 22, and the groove 221 forms a continuous annular structure. When the protective component 3 is damaged and water enters the end cover 2, the groove 221 can play a role in shunting and guiding the water flow. The water flows into the groove 221, and through the groove 221, it can prevent water from entering the interior of the motor body 1 through the gap between the end cover 2 and the drive shaft 11. Moreover, the continuous annular structure of the groove 221 forms a physical barrier, blocking the path for moisture to directly penetrate through the gap between the end cover 2 and the drive shaft 11. At the same time, by providing the groove 221 on the side wall of the first boss 22, not only the waterproof function of the end cover 2 is enhanced, but also the waterproof reliability of the entire motor device is improved.

[0045] Specifically, as Figure 1 shown in Figure 1 , the motor device further includes: a first humidity sensor 4 and a second humidity sensor 5. The first humidity sensor 4 is provided on the housing 12 of the motor body 1, and the first humidity sensor 4 is located on the side of the housing 12 of the motor body 1 close to the end cover 2; the first humidity sensor 4 is used to obtain the humidity between the end cover 2 and the protective component 3; the second humidity sensor 5 is provided on the housing 12 of the motor body 1, and the second humidity sensor 5 is spaced from the first humidity sensor 4 along the axial direction of the drive shaft 11. The second humidity sensor 5 is located inside the protective component 3 and on the side far from the end cover 2; the second humidity sensor 5 is used to obtain the humidity between the protective component 3 and the housing 12 of the motor body 1. With such a structural arrangement, when the motor device stops running, by providing the first humidity sensor 4 and the second humidity sensor 5, the humidity between the end cover 2 and the protective component 3 and the humidity situation between the protective component 3 and the housing 12 of the motor body 1 can be effectively monitored, and then based on the detection results of the first humidity sensor 4 and the second humidity sensor 5, it can be used to determine whether the motor device needs to perform an action to prevent water vapor erosion, so as to keep the interior of the motor relatively dry, avoid abnormal conditions of the internal components of the motor body 1 caused by water vapor erosion, and improve the service life of the motor device.

[0046] Furthermore, both the first humidity sensor 4 and the second humidity sensor 5 are located in the placement space 30, and the second humidity sensor 5 is close to the mounting opening 33.

[0047] Specifically, the housing 12 of the motor body 1 and the stator assembly of the motor body 1 are integrally injection molded. With such a structural arrangement, it can ensure that the stator assembly of the motor body 1 has good sealing performance.

[0048] The present utility model also provides an air conditioner, which includes: a motor device, and the motor device is the motor device of the above embodiment. With such a structural arrangement, the motor device of the above embodiment is provided in the air conditioner, thereby reducing the maintenance and repair requirements caused by moisture, reducing the maintenance cost and downtime, and also reducing the failure of the air conditioner caused by motor faults. Thus, the overall energy efficiency of the air conditioner is improved.

[0049] The present utility model also provides a waterproof control method, which is used for waterproof control of the motor device of the above embodiment. The waterproof control method includes: judging the working state of the motor device; when the motor device is in a stopped state, obtaining the first humidity a between the protective component 3 and the end cover 2 and obtaining the second humidity b between the protective component 3 and the housing 12 of the motor body 1; comparing the currently obtained first humidity a between the protective component 3 and the end cover 2 with the first threshold c and the second threshold d respectively, and comparing the currently obtained second humidity b between the protective component 3 and the housing 12 of the motor body 1 with the first threshold c and the second threshold d respectively; and clearing the moisture between the protective component 3 and the end cover 2 and between the protective component 3 and the housing 12 of the motor body 1 according to the comparison results of the currently obtained first humidity a between the protective component 3 and the end cover 2 with the first threshold c and the second threshold d, and / or according to the comparison results of the currently obtained second humidity b between the protective component 3 and the housing 12 of the motor body 1 with the first threshold c and the second threshold d. With such a waterproof control method, by continuously monitoring the humidity between the protective component 3 and the end cover 2 and between the protective component 3 and the housing 12 of the motor body 1, the situation of moisture accumulation can be detected in time, and then measures can be taken to remove the moisture, avoiding the problems of electrical short circuit, rust or bearing damage that may be caused by the accumulation of moisture, and further preventing potential faults, and ensuring the dryness between the motor body and the protective component 3 and between the end cover 2 and the protective component 3 when the motor device is in a stopped state. Effectively prevent water from entering the interior of the motor body 1. At the same time, through this method, not only can faults be prevented, the safety and service life of the motor device be improved, but also the operation efficiency can be optimized, the maintenance cost can be reduced, intelligent device management can be realized, and the stable operation of the motor device in various environments can be ensured.

[0050] Among them, the first threshold c and the second threshold d are values set according to the humidity requirements of the motor device. The first threshold c can be understood as a warning value, which indicates that the humidity inside or around the motor device begins to exceed the safe range. The second threshold d can be understood as an emergency value, which is higher than the first threshold c. Once the detected humidity reaches or exceeds d, it indicates that the humidity environment of the motor device has reached a level that may pose a direct threat to the safety and performance of the motor.

[0051] Specifically, a method for removing moisture between the protective component 3 and the end cover 2, and between the protective component 3 and the housing 12 of the motor body 1 according to the comparison results of the first humidity a between the obtained current protective component 3 and the end cover 2 with the first threshold c and the second threshold d respectively, and / or according to the comparison results of the second humidity b between the obtained current protective component 3 and the housing 12 of the motor body 1 with the first threshold c and the second threshold d respectively, includes: when a > c, controlling the motor device to operate at a preset speed to remove moisture through the heat generated during the operation of the motor device; when a < c and c < b < d, applying a low-voltage direct current to the motor device to heat the stator coil of the motor body 1 to remove moisture through the heat generated by the stator coil of the motor body 1; when b ≥ d, controlling the motor device to operate at a preset speed to remove moisture through the heat generated during the operation of the motor device; where c < d. By adopting such a waterproof control method, corresponding actions are taken according to the comparison results of the first humidity a between the obtained current protective component 3 and the end cover 2 with the first threshold c and the second threshold d respectively, and the comparison results of the second humidity b between the obtained current protective component 3 and the housing 12 of the motor body 1 with the first threshold c and the second threshold d respectively, thereby ensuring that the components inside the motor will not be damaged by water vapor erosion and improving the service life of the motor device.

[0052] Further, the first humidity a between the protective component 3 and the end cover 2 is collected by the first humidity sensor 4, and the second humidity b between the protective component 3 and the housing 12 of the motor body 1 is collected by the second humidity sensor 5.

[0053] Further, the waterproof control method of the motor device operates with priorities. Since the end cover is located in the innermost part of the protective component 3 and water vapor is likely to enter the interior of the motor body 1 from the gap between the end cover and the motor body 1, therefore, the comparison results of the first humidity a between the obtained current protective component 3 and the end cover 2 with the first threshold c and the second threshold d respectively will be preferentially judged, so as to more timely protect the core part of the motor from damage. And introducing priorities can more effectively utilize the resources of the control system. When the humidity between the end cover 2 and the protective component 3 is detected to be abnormal, the control system can immediately start the corresponding removal or alarm program without waiting to evaluate the humidity of other parts. This can save processing time and improve the response speed.

[0054] Specifically, a method for removing moisture between the protective component 3 and the end cover 2, and between the protective component 3 and the housing 12 of the motor body 1 according to the comparison results of the first humidity a between the currently obtained protective component 3 and the end cover 2 with the first threshold c and the second threshold d respectively, and / or according to the comparison results of the second humidity b between the currently obtained protective component 3 and the housing 12 of the motor body 1 with the first threshold c and the second threshold d respectively, further includes: when the motor device operates at a preset speed or when the motor device is energized with low-voltage direct current, obtaining the first humidity a between the protective component 3 and the end cover 2 and obtaining the second humidity b between the protective component 3 and the housing 12 of the motor body 1; comparing the obtained first humidity a between the currently obtained protective component 3 and the end cover 2 with the first threshold c and the second threshold d respectively, and comparing the obtained second humidity b between the currently obtained protective component 3 and the housing 12 of the motor body 1 with the first threshold c and the second threshold d respectively; when a < c and b < c, the motor device stops operating or the motor device stops being energized with low-voltage direct current. By adopting such a waterproof control method, during the process of removing moisture between the protective component 3 and the end cover 2 and between the protective component 3 and the housing 12 of the motor body 1, the first humidity a between the protective component 3 and the end cover 2 and the second humidity b between the protective component 3 and the housing 12 of the motor body 1 are also detected in real time. When a < c and b < c, the motor device stops operating or the motor device stops being energized with low-voltage direct current, thereby effectively ensuring the safety and reliability of the motor device, protecting the motor device from humidity-related damage, extending its service life, reducing maintenance costs, and improving the overall operation efficiency and safety.

[0055] Among them, the preset speed is a value set during design, so that the motor device generates heat and the protective component 3 rotates.

[0056] Specifically, when the motor device is energized with low-voltage direct current, obtain the winding current Ix of the motor device, and compare the product of the obtained winding current Ix of the motor device and the preset coefficient K with the demagnetizing current It; select the corresponding method for removing moisture between the protective component 3 and the end cover 2 and between the protective component 3 and the housing 12 of the motor body 1 according to the comparison result of the product of the currently obtained winding current Ix of the motor device and the preset coefficient K and the demagnetizing current It; when Ix*K ≤ It, the motor device continues to be energized with low-voltage direct current to heat the stator coil of the motor body 1, so as to remove the moisture through the heat generated by the stator coil of the motor body 1; when Ix*K > It, the motor device stops being energized with low-voltage direct current, and controls the motor device to operate at a preset speed, so as to remove the moisture through the heat generated when the motor device operates. By adopting such a waterproof control method, when the motor device is energized with low-voltage direct current, the winding current is monitored in real time, thereby preventing phenomena such as winding short circuit and avoiding damage to the motor body 1.

[0057] Among them, when a low-voltage direct current is applied to the motor device, it can be understood that a direct current with a relatively low voltage is applied to the motor device.

[0058] Furthermore, when a low-voltage direct current is applied to the motor device, the heat loss Q = I 2 RT of the stator coil is used for heating.

[0059] Specifically, the motor device is the motor device of the above embodiment; when the motor device operates at a preset speed, the centrifugal fan structure 34 rotates to remove the moisture between the protective component 3 and the housing 12 of the motor body 1 and the moisture between the protective component 3 and the end cover 2. By adopting such a waterproof control method, when the motor device operates at a preset speed, the centrifugal fan structure 34 will rotate along with the protective component 3, and then a negative pressure area will be generated in its rotation area. Thus, through the self-heating of the motor device and the rotation of the centrifugal fan structure 34, the moisture between the protective component 3 and the end cover 2 and between the protective component 3 and the housing 12 of the motor body 1 is removed more quickly, and the efficiency of moisture removal is improved. At the same time, through the rotation of the centrifugal fan structure 34, the air circulation inside the motor device is enhanced, which helps to evenly distribute the heat generated by the motor, avoid local overheating, and also promotes the rapid evaporation and removal of moisture in the entire area. In addition, quickly removing moisture can reduce the corrosion and damage of the internal components of the motor by humidity, extend the service life of the motor, and improve the reliability and safety of the overall system.

[0060] Specifically, the waterproof control method further includes: when the motor device is in an operating state, waterproofing is achieved through the heat generated during the operation of the motor device and its own structure. By adopting such a waterproof control method, through the protective component 3 of the motor device in the above embodiment, when the motor device is operating, moisture is effectively prevented from entering the motor body 1, avoiding direct contact between the inside of the motor and the external environment and water vapor erosion, reducing the corrosion and aging of the internal components of the motor, reducing the maintenance frequency and complexity caused by water vapor erosion, thus extending the service life of the motor, reducing the maintenance and replacement costs, improving the maintenance efficiency and the waterproof performance of the motor device. At the same time, the heat generated during the operation of the motor device is used to evaporate the water on the protective component 3, thereby further reducing the risk of moisture entering the motor body 1.

[0061] Furthermore, the specific process of the waterproof control method when the motor device is in a stopped state is as follows:

[0062] When the motor device is in a stopped state, the first humidity sensor 4 and the second humidity sensor 5 start to collect in real time the first humidity a between the protective component 3 and the end cover 2 and the second humidity b between the protective component 3 and the housing 12 of the motor body 1, and compare both the collected first humidity a between the protective component 3 and the end cover 2 and the second humidity b between the protective component 3 and the housing 12 of the motor body 1 with a first threshold value c and a second threshold value d.

[0063] When a > c, control the motor device to operate at a preset speed to remove moisture by the heat generated during the operation of the motor device.

[0064] When a < c and c < b < d, the motor device is supplied with low-voltage direct current (i.e., the motor device is supplied with direct current at a relatively low voltage), and the heat loss Q = I 2 RT of the stator coil is utilized to heat the stator coil of the motor body 1, and the moisture is removed by the heat generated by the stator coil of the motor body 1.

[0065] Among them, when the motor device is supplied with low-voltage direct current, the winding current is monitored in real time, the winding current Ix of the motor device is obtained in real time, and the product of the winding current Ix of the motor device obtained each time and a preset coefficient K is compared with a demagnetizing current It; and according to the comparison result of the product of the winding current Ix of the motor device obtained each time and the preset coefficient K and the demagnetizing current It, a corresponding method for removing moisture between the protective component 3 and the end cover 2 and between the protective component 3 and the housing 12 of the motor body 1 is selected; when Ix*K ≤ It, the motor device continues to be supplied with low-voltage direct current to heat the stator coil of the motor body 1 to remove moisture by the heat generated by the stator coil of the motor body 1; when Ix*K > It, the motor device stops being supplied with low-voltage direct current, and controls the motor device to operate at a preset speed to remove moisture by the heat generated during the operation of the motor device.

[0066] When b ≥ d, control the motor device to operate at a preset speed to remove moisture by the heat generated during the operation of the motor device.

[0067] Among them, when the motor device operates at a preset speed, the centrifugal fan structure 34 rotates to remove the moisture between the protective component 3 and the housing 12 of the motor body 1 and the moisture between the protective component 3 and the end cover 2.

[0068] During the process of the motor device operating at a preset rotational speed or when the motor device is energized with low-voltage direct current to remove moisture between the protective component 3 and the end cover 2 and between the protective component 3 and the housing 12 of the motor body 1, the first humidity a between the protective component 3 and the end cover 2 and the second humidity b between the protective component 3 and the housing 12 of the motor body 1 are obtained in real time; the first humidity a obtained each time between the protective component 3 and the end cover 2 is respectively compared with the first threshold c and the second threshold d, and the second humidity b obtained each time between the protective component 3 and the housing 12 of the motor body 1 is respectively compared with the first threshold c and the second threshold d; when a < c and b < c, the motor device stops operating or the motor device stops being energized with low-voltage direct current.

[0069] The utility model provides a motor device, including: a motor body 1, an end cover 2, and a protective component 3. The output end of the drive shaft 11 of the motor body 1 passes through the end cover 2, and the output end of the drive shaft 11 extends to the side of the end cover 2 away from the motor body 1. The end cover 2 is fixedly installed on the motor body 1; the protective component 3 is sleeved on the motor body 1, and the output end of the drive shaft 11 and the end cover 2 are located inside the protective component 3; the protective component 3 shields the output end of the drive shaft 11 and the end cover 2, and the output end of the drive shaft 11 is connected to the protective component 3; the output end of the drive shaft 11 is connected to a load through the protective component 3; wherein, when the motor body 1 operates, the drive shaft 11 drives the protective component 3 to rotate.

[0070] It can be seen that for the motor device provided by the utility model, by simply arranging the motor body 1, the end cover 2, and the protective component 3, and the protective component 3 is sleeved on the motor body 1, the output end of the drive shaft 11 and the end cover 2 are located inside the protective component 3, and the protective component 3 shields the output end of the drive shaft 11 and the end cover 2. Thus, by sleeving the protective component 3 on the motor body 1, a physical barrier is formed by the protective component 3, effectively isolating external water vapor, dust, and other impurities, significantly enhancing the sealing performance of the motor, and protecting the interior of the motor from the external environment. And by shielding the output end of the drive shaft 11 and the end cover 2 with the protective component 3, it can effectively prevent water vapor from directly contacting the key components of the motor, greatly reducing the failure rate of the motor caused by water vapor erosion, improving the stability and reliability of the motor operation. And by avoiding the direct contact between the interior of the motor and the external environment and water vapor erosion, the corrosion and aging of the internal components of the motor are reduced, the maintenance frequency and complexity caused by water vapor erosion are lowered, thereby extending the service life of the motor, reducing the maintenance and replacement costs, improving the maintenance efficiency, and improving the waterproof performance of the motor device.

[0071] In addition, the output end of the drive shaft 11 is connected to the protective component 3; and the output end of the drive shaft 11 is connected to the load through the protective component 3; and when the motor body 1 is running, the drive shaft 11 drives the protective component 3 to rotate. Therefore, the protective component 3 not only protects the motor body 1, but also transmits power as an intermediate connector, so that the motor device can more easily adapt to different types of loads or change the position and direction of the load when necessary through the protective component 3, without having to directly modify the drive shaft. At the same time, when the motor body 1 is running, the drive shaft 11 drives the protective component 3 to rotate, and the rotating protective component 3 forms a dynamic sealing surface. This dynamic sealing mechanism can further improve the protection effect. The motor device effectively solves the technical problem in the prior art that water vapor can easily penetrate into the enclosed area between the motor body and the end cover from the gap between the end covers, thereby making the internal parts of the motor easily corroded by water vapor.

[0072] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0073] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0074] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0075] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0076] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A motor device, characterized in that, Including: A motor body (1) and an end cover (2), the output end of the drive shaft (11) of the motor body (1) passes through the end cover (2), and the output end of the drive shaft (11) extends to the side of the end cover (2) away from the motor body (1), and the end cover (2) is fixedly installed on the motor body (1); A protection component (3), the protection component (3) is sleeved on the motor body (1), and the output end of the drive shaft (11) and the end cover (2) are located inside the protection component (3); the protection component (3) shields the output end of the drive shaft (11) and the end cover (2), and the output end of the drive shaft (11) is connected to the protection component (3); the output end of the drive shaft (11) is connected to a load through the protection component (3); Wherein, when the motor body (1) operates, the drive shaft (11) drives the protection component (3) to rotate.

2. The motor device according to claim 1, characterized in that, The protection component (3) has a placement space (30), at least part of the end cover (2) and the motor body (1) are arranged in the placement space (30), and the output end of the drive shaft (11) passes through the placement space (30) and is connected to the protection component (3); Wherein, there are gaps between the inner wall of the placement space (30) and the housing (12) of the motor body (1) and between the inner wall of the placement space (30) and the end cover (2).

3. The motor device according to claim 2, characterized in that The protection component (3) includes: A transmission shaft (32), an installation groove (320) adapted to the output end of the drive shaft (11) is provided on the transmission shaft (32), the output end of the drive shaft (11) is installed in the installation groove (320) so that the output end of the drive shaft (11) is connected to the transmission shaft (32), the axis extension direction of the drive shaft (11) coincides with the axis extension direction of the transmission shaft (32), and the output end of the drive shaft (11) is connected to the protection component (3) through the installation groove (320); A cover body (31), the cover body (31) is connected to the transmission shaft (32), the cover body (31) is arranged around the transmission shaft (32), the placement space (30) is provided inside the cover body (31), the installation groove (320) communicates with the placement space (30), and the output end of the drive shaft (11) passes through the placement space (30) and is installed in the installation groove (320).

4. The motor device according to claim 3, characterized in that, An external thread (110) with a preset length is provided on the output end of the drive shaft (11), and an internal thread (321) adapted to the external thread (110) is provided in the installation groove (320), so that the output end of the drive shaft (11) is installed in the installation groove (320) through the thread fit of the external thread (110) and the internal thread (321).

5. The motor device according to claim 2, wherein On one side of the protective component (3) away from the output end of the drive shaft (11), there is an installation opening (33) communicating with the placement space (30), and at least a part of the motor body (1) and the end cover (2) are arranged in the placement space (30) through the installation opening (33); The protective component (3) includes: a centrifugal fan structure (34), the centrifugal fan structure (34) is arranged on the inner wall of the placement space (30) and is close to the installation opening (33); the centrifugal fan structure (34) faces the housing (12) of the motor body (1), and there is a gap between the centrifugal fan structure (34) and the housing (12) of the motor body (1). When the drive shaft (11) rotates, it drives the centrifugal fan structure (34) to rotate, so that the air flow moves in a direction away from the installation opening (33).

6. The motor device according to claim 1, characterized in that, The end cover (2) is a multi-stage stepped structure.

7. The electric machine device according to claim 6, characterized in that, The end cover (2) includes: An end cover body (21), the end cover body (21) is fixedly connected to the motor body (1); a first installation cavity (210) is provided in the end cover body (21); A first boss (22), the first boss (22) is arranged on the end face of the end cover body (21) away from the housing (12) of the motor body (1), the center line of the first boss (22) coincides with the center line of the end cover body (21), a second installation cavity (220) is provided in the first boss (22), and the second installation cavity (220) communicates with the first installation cavity (210); A second boss (23), the second boss (23) is arranged on the first boss (22), at least a part of the second boss (23) is located in the second installation cavity (220), the center line of the second boss (23) coincides with the center line of the first boss (22), and a third installation cavity (230) adapted to the bearing is provided in the second boss (23), and the third installation cavity (230) communicates with the second installation cavity (220); Wherein, the shortest straight-line distance from the outer edge of the second boss (23) to the axis of the drive shaft (11), the shortest straight-line distance from the outer edge of the first boss (22) to the axis of the drive shaft (11), and the shortest straight-line distance from the outer edge of the end cover body (21) to the axis of the drive shaft (11) increase in sequence.

8. The motor device according to claim 7, characterized in that, A groove (221) is provided on the side wall of the first boss (22), the groove (221) extends along the circumferential direction of the first boss (22), and the groove (221) forms a continuous annular structure.

9. The electric machine device according to any one of claims 1 to 8, characterized in that, The motor device further includes: A first humidity sensor (4), the first humidity sensor (4) is disposed on the housing (12) of the motor body (1), and the first humidity sensor (4) is located on a side of the housing (12) of the motor body (1) close to the end cover (2); the first humidity sensor (4) is configured to obtain the humidity between the end cover (2) and the protection component (3). A second humidity sensor (5), the second humidity sensor (5) is disposed on the housing (12) of the motor body (1), the second humidity sensor (5) is spaced apart from the first humidity sensor (4) along the axial direction of the drive shaft (11), and the second humidity sensor (5) is located on a side within the protection component (3) and away from the end cover (2); the second humidity sensor (5) is configured to obtain the humidity between the protection component (3) and the housing (12) of the motor body (1).

10. An air conditioner, characterized in that, Comprising: A motor device, the motor device being the motor device according to any one of claims 1 to 9.

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