High-speed permanent magnet assisted synchronous reluctance motor

Abstract

The present invention discloses a high-speed permanent magnet assisted synchronous reluctance motor, belonging to the technical field of motors, including a housing. A stator and a rotor are arranged inside the housing. A front cover and a rear cover are respectively installed at the left and right ends of the housing. A cooling structure is installed on the outer wall of the housing. A cooling air source is installed inside the rear cover. An exchange window is opened at the left end of the rear cover, and the cooling air source works through the exchange window. The rear cover is connected to the cooling structure through a plurality of air supply pipes. The cooling structure includes a plurality of cooling bins, and the cooling bins communicate with the housing. When the present invention is in use, when the rotor rotates, with the mutual cooperation of the main shaft, the first auxiliary shaft, the second auxiliary shaft, the electromagnetic push rod, the power gear, the input gear, the first output gear, the second output gear and the third output gear, the cooling fan can maintain a rotation direction whether the rotor rotates forward or backward, thereby continuously dissipating heat inside the housing, and thus increasing the heat dissipation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, specifically a high-speed permanent magnet assisted synchronous reluctance motor. Background Art

[0002] When a permanent magnet synchronous reluctance motor rotates, there is no current inside, which will greatly reduce the performance consumption of the motor. However, when a permanent magnet synchronous reluctance motor is in use, a large amount of heat will be generated inside. Currently, when dissipating heat from the motor, external devices are used, such as directly dissipating heat from the motor using a cooling fan. However, using a cooling fan for heat dissipation can only blow to the outside of the motor, and such heat dissipation efficiency is very low. Moreover, when installing the motor, a space for installing the cooling fan needs to be reserved, which will increase the installation space of the motor. Therefore, the present invention provides a high-speed permanent magnet assisted synchronous reluctance motor to solve the above-mentioned problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a high-speed permanent magnet assisted synchronous reluctance motor to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A high-speed permanent magnet assisted synchronous reluctance motor, including a housing. Inside the housing, there are a stator and a rotor. Front covers and rear covers are respectively installed at the left and right ends of the housing. A cooling structure is installed on the outer wall of the housing. A cooling air source is installed inside the rear cover. An exchange window is opened at the left end of the rear cover, through which the cooling air source works. The rear cover is connected to the cooling structure through a plurality of air supply pipes. The cooling structure includes a plurality of cooling chambers, which are in communication with the housing. Cooling pipes are installed inside the cooling chambers. A plurality of the cooling pipes are connected through a circulation pipe. A circulation pump is installed between two of the cooling chambers. One end of the circulation pump is provided with an input pipe, which is connected to a cooling tank filled with coolant. The other end of the circulation pump is connected to the circulation pipe. An output pipe is connected to one of the cooling pipes, and the output pipe is connected to the cooling tank.

[0006] As a further solution of the present invention, a connection window is opened at the end of the cooling chamber in contact with the housing, and an air inlet is opened at a position on the outer wall of the housing corresponding to the connection window.

[0007] As a further solution of the present invention, the cooling air source includes a power gear ring, which is rotatably connected to the rear cover, and a cooling fan is sleeved outside the power gear ring.

[0008] As a further solution of the present invention, a main shaft is provided inside the power gear ring. The main shaft is rotatably connected to the rear cover and is connected to the rotating shaft of the rotor.

[0009] As a further solution of the present invention, a power gear is sleeved outside the main shaft. A first auxiliary shaft is provided on one side of the main shaft, and an electromagnetic push rod and a second auxiliary shaft are provided on the other side.

[0010] As a further solution of the present invention, an input gear is sleeved outside the first auxiliary shaft. The power gear meshes with the input gear. Two first output gears are also sleeved outside the first auxiliary shaft. The two first output gears are located on both sides of the input gear, and the diameters of the two first output gears are larger than that of the input gear. The first output gear meshes with the power ring gear.

[0011] As a further solution of the present invention, a second output gear is sleeved on the stroke rod of the electromagnetic push rod, and a third output gear is sleeved outside the second auxiliary shaft.

[0012] As a further solution of the present invention, a plurality of ventilation openings are provided at the inner top end of the cooling chamber. A blocking plate is fixedly connected inside the ventilation opening. The lower end of the blocking plate extends into the cooling chamber and is parallel to the top of the cooling chamber. An isolation plate is also rotatably connected inside the ventilation opening. The isolation plate can only rotate outwards unidirectionally.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. When the present invention is in use, when the rotor rotates, with the mutual cooperation of the main shaft, the first auxiliary shaft, the second auxiliary shaft, the electromagnetic push rod, the power gear, the input gear, the first output gear, the second output gear and the third output gear, the cooling fan can maintain a rotation direction whether the rotor rotates forward or backward, thereby continuously dissipating heat inside the housing, and thus increasing the heat dissipation effect.

[0015] 2. When the present invention is in use, when the cooling fan works, the circulation pump is turned on. At this time, the cooling fan will send air into the cooling chamber through the air supply pipe, and then after being cooled by the cooling pipe, it will enter the housing to dissipate heat inside the housing.

[0016] 3. When the present invention is in use, when air enters the cooling chamber, the blocking plate will play a blocking role to prevent a large amount of cooled air from flowing out of the cooling chamber through the ventilation opening. When the cooling fan sends air into the cooling chamber, it will push open the isolation plate, so that the cooling chamber exchanges air with the outside. Description of the Drawings

[0017] Figure 1 It is a structural schematic diagram of a high-speed permanent magnet assisted synchronous reluctance motor.

[0018] Figure 2 It is an exploded view of a high-speed permanent magnet assisted synchronous reluctance motor.

[0019] Figure 3 It is a split view of the cooling air source in a high-speed permanent magnet assisted synchronous reluctance motor.

[0020] Figure 4 It is a connection diagram of the power gear ring and the power gear in a high-speed permanent magnet assisted synchronous reluctance motor.

[0021] Figure 5 It is a structural diagram of the cooling pipe and the cooling chamber in a high-speed permanent magnet assisted synchronous reluctance motor.

[0022] Figure 6 It is a cross-sectional view of the cooling chamber in a high-speed permanent magnet assisted synchronous reluctance motor.

[0023] Figure 7 In the high-speed permanent magnet assisted synchronous reluctance motor Figure 6 An enlarged schematic diagram of location A.

[0024] In the figure: 1. Outer shell; 2. Front cover; 3. Rear cover; 4. Cooling structure; 5. Stator; 6. Rotor; 300. Air supply pipe; 301. Exchange window; 302. Power gear ring; 303. Cooling fan; 304. Protective cover; 305. Main shaft; 306. Power gear; 307. First auxiliary shaft; 308. Input gear; 309. First output gear; 310. Electromagnetic push rod; 311. Second output gear; 312. Second auxiliary shaft; 313. Third output gear; 400. Cooling chamber; 401. Cooling cavity; 402. Cooling pipe; 403. Circulation pump; 404. Circulation pipe; 405. Input pipe; 406. Output pipe; 407. Ventilation opening; 408. Baffle plate; 409. Isolation plate; 410. Connection window. Detailed implementation manners

[0025] Embodiment 1:

[0026] Please refer to Figure 1 、 2, 3, 5, in an embodiment of the present invention, a high-speed permanent magnet assisted synchronous reluctance motor includes a housing 1. Inside the housing 1, a stator 5 and a rotor 6 are provided. Front covers 2 and rear covers 3 are respectively installed at the left and right ends of the housing 1. The front cover 2 and the rear cover 3 are detachably connected to the housing 1 by screws. A cooling structure 4 is installed on the outer wall of the housing 1. A cooling air source is installed inside the rear cover 3. An exchange window 301 is opened at the left end of the rear cover 3. Through the exchange window 301, the cooling air source works. The rear cover 3 is connected to the cooling structure 4 through a plurality of air supply pipes 300. The cooling structure 4 includes a plurality of cooling chambers 400. The air supply pipes 300 are connected to the cooling chambers 400. The cooling chambers 400 are fixedly connected to the housing 1. The cooling chambers 400 communicate with the housing 1. A connection window 410 is opened at one end of the cooling chamber 400 in contact with the housing 1. An air inlet is opened at a position on the outer wall of the housing 1 corresponding to the connection window 410. A cooling pipe 402 is installed inside the cooling chamber 400. A cooling cavity 401 is opened inside the cooling chamber 400. The inner diameter of the cooling cavity 401 is larger than the outer diameter of the cooling pipe 402. Both ends of the cooling pipe 402 are fixedly connected with limiting heads. The limiting heads are made of rubber material, and the outer diameter of the limiting heads is adapted to the inner diameter of the cooling cavity 401. A plurality of cooling pipes 402 are connected through a circulation pipe 404. A circulation pump 403 is installed between two of the cooling chambers 400. One end of the circulation pump 403 is provided with an input pipe 405. The input pipe 405 is connected to a cooling tank (not shown in the figure) filled with coolant. The other end of the circulation pump 403 is connected to the circulation pipe 404. An output pipe 406 is connected to one of the cooling pipes 402. The output pipe 406 is connected to the cooling tank.

[0027] Embodiment Two:

[0028] Please refer to Figure 3 , 4, 6, 7, based on the foundation of Embodiment 1, the cooling air source includes a power gear ring 302 which is rotatably connected to the rear cover 3. A cooling fan 303 is sleeved outside the power gear ring 302 and fixedly connected to the power gear ring 302. A protective cover 304 is clamped at one end of the power gear ring 302 away from the inner wall of the rear cover 3. A main shaft 305 is arranged inside the power gear ring 302 and is rotatably connected to the rear cover 3. The main shaft 305 is located in the middle of the power gear ring 302 and is connected to the rotating shaft of the rotor 6. A power gear 306 is sleeved outside the main shaft 305. A first auxiliary shaft 307 is arranged on one side of the main shaft 305, and an electromagnetic push rod 310 and a second auxiliary shaft 312 are arranged on the other side. The first auxiliary shaft 307, the electromagnetic push rod 310 and the second auxiliary shaft 312 are all rotatably connected to the rear cover 3. An input gear 308 is sleeved outside the first auxiliary shaft 307. The power gear 306 meshes with the input gear 308. The input gear 308 is connected to the first auxiliary shaft 307 through a one-way bearing. Two first output gears 309 are also sleeved outside the first auxiliary shaft 307. The two first output gears 309 are located on both sides of the input gear 308, and the diameters of the two first output gears 309 are larger than the diameter of the input gear 308. The first output gears 309 mesh with the power gear ring 302, and the two first output gears 309 are connected to the first auxiliary shaft 307 through one-way bearings;

[0029] A second output gear 311 is sleeved on the stroke rod of the electromagnetic push rod 310. The second output gear 311 meshes with the power gear 306. A third output gear 313 is sleeved outside the second auxiliary shaft 312;

[0030] A plurality of ventilation openings 407 are opened at the inner top end of the cooling chamber 400. A blocking plate 408 is fixedly connected inside the ventilation openings 407. The lower end of the blocking plate 408 extends into the cooling chamber 401 and is parallel to the top of the cooling chamber 400. An isolation plate 409 is rotatably connected inside the ventilation openings 407. The isolation plate 409 can only rotate outwards unidirectionally. A limiting step is fixedly connected inside the ventilation openings 407, and the rotation direction of the isolation plate 409 can be restricted through the limiting step.

[0031] The working principle of the present invention is:

[0032] When the rotor 6 rotates during the use of the present invention, it will drive the main shaft 305 to rotate. When the main shaft 305 rotates, it will drive the input gear 308 to rotate through the power gear 306. When the power gear 306 rotates clockwise, the input gear 308 will rotate counterclockwise. When the input gear 308 rotates counterclockwise, the one-way bearing between the input gear 308 and the first auxiliary shaft 307 is in a locked state, and the one-way bearing between the first output gear 309 and the first auxiliary bearing 307 is also in a locked state. At this time, the second output gear 311 is not engaged with the power gear 306 under the action of the electromagnetic push rod 310. That is, the input gear 308 will drive the first output gear 309 to rotate through the first auxiliary shaft 307. The counterclockwise rotation of the first output gear 309 will drive the power gear ring 302 to rotate counterclockwise, thereby driving the radiator fan 303 to work. When the rotor 6 rotates in the reverse direction, at this time, the electromagnetic push rod 310 will push the second output gear 311 to make it enter between the power gear 306 and the third output gear 313 and engage with the power gear 306 and the third output gear 313. At this time, the one-way bearings between the first auxiliary shaft 307 and the input gear 308 and the first output gear 309 are in a released state. The reverse rotation of the rotor 6, that is, the counterclockwise rotation, will drive the second output gear 311 to rotate clockwise. The clockwise rotation of the second output gear 311 will drive the third output gear 313 to rotate counterclockwise. When the third output gear 313 rotates counterclockwise, it will drive the power gear ring 302 to rotate counterclockwise. At this time, under the action of the power gear ring 302, the first output gear 309 is in an idling state and cannot drive the first auxiliary shaft 307 to rotate. In this way, no matter whether the rotor 6 rotates forward or backward, the radiator fan 303 always maintains one rotation direction;

[0033] When the radiator fan 303 works, the circulation pump 403 is turned on. At this time, the radiator fan 303 will send air into the cooling chamber 400 through the air supply pipe 300, and then after being cooled by the cooling pipe 402, it will enter the housing 1 to dissipate heat from the inside of the housing 1. When the air enters the cooling chamber 400, the baffle 408 will play a blocking role to prevent a large amount of cooled air from flowing out of the cooling chamber 400 through the ventilation port 407. When the radiator fan 303 sends air into the cooling chamber 400, it will push open the isolation plate 409, so that the cooling chamber 400 exchanges air with the outside. At the same time, the isolation plate 409 opens unidirectionally, which can prevent water from entering the cooling chamber 400 through the ventilation port 407 and then entering the housing 1 through the cooling chamber 400. In this way, the sealing performance of the present invention can be improved.

[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. High-speed permanent magnet assisted synchronous reluctance motor, including a housing (1), characterized in that, Inside the housing (1), there is a stator (5) and a rotor (6). At the left and right ends of the housing (1), a front cover (2) and a rear cover (3) are respectively installed. A cooling structure (4) is installed on the outer wall of the housing (1). Inside the rear cover (3), there is a cooling air source. An exchange window (301) is opened at the left end of the rear cover (3), which facilitates the operation of the cooling air source. The rear cover (3) is connected to the cooling structure (4) through a number of air supply pipes (300). The cooling structure (4) includes a number of cooling chambers (400), and the cooling chambers (400) communicate with the housing (1). Inside the cooling chambers (400), there are cooling pipes (402). A number of the cooling pipes (402) are connected through a circulation pipe (404). A circulation pump (403) is installed between two of the cooling chambers (400). One end of the circulation pump (403) is provided with an input pipe (405), and the input pipe (405) is connected to a cooling tank filled with coolant. The other end of the circulation pump (403) is connected to the circulation pipe (404). An output pipe (406) is connected to one of the cooling pipes (402), and the output pipe (406) is connected to the cooling tank; And inside the cooling chamber (400), there is a cooling cavity (401). The inner diameter of the cooling cavity (401) is larger than the outer diameter of the cooling pipe (402). At the top of the inside of the cooling chamber (400), a number of ventilation openings (407) are opened. Inside the ventilation openings (407), there is a blocking plate (408) fixedly connected. The lower end of the blocking plate (408) extends into the cooling cavity (401) and is parallel to the top of the cooling chamber (400). Inside the ventilation openings (407), there is also a partition plate (409) rotatably connected, and the partition plate (409) can only rotate outwards unidirectionally.

2. The high-speed permanent magnet assisted synchronous reluctance motor according to claim 1, wherein At the end of the cooling chamber (400) in contact with the housing (1), there is a connection window (410). At the position on the outer wall of the housing (1) corresponding to the connection window (410), there is an air inlet.

3. The high-speed permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that, The cooling air source includes a power gear ring (302), and the power gear ring (302) is rotatably connected to the rear cover (3). A heat dissipation fan (303) is sleeved outside the power gear ring (302).

4. The high-speed permanent magnet assisted synchronous reluctance motor according to claim 3, characterized in that, Inside the power gear ring (302), there is a main shaft (305). The main shaft (305) is rotatably connected to the rear cover (3), and the main shaft (305) is connected to the rotating shaft of the rotor (6).

5. The high-speed permanent magnet assisted synchronous reluctance motor according to claim 4, characterized in that Outside the main shaft (305), there is a power gear (306). On one side of the main shaft (305), there is a first auxiliary shaft (307), and on the other side, there is an electromagnetic push rod (310) and a second auxiliary shaft (312).

6. The high-speed permanent magnet assisted synchronous reluctance motor according to claim 5, characterized in that, An input gear (308) is sleeved outside the first auxiliary shaft (307). The power gear (306) meshes with the input gear (308). Two first output gears (309) are also sleeved outside the first auxiliary shaft (307). The two first output gears (309) are located on both sides of the input gear (308), and the diameters of the two first output gears (309) are larger than the diameter of the input gear (308). The first output gear (309) meshes with the power gear ring (302).

7. The high-speed permanent magnet assisted synchronous reluctance motor according to claim 5, characterized in that A second output gear (311) is sleeved on the stroke rod of the electromagnetic push rod (310). The second output gear (311) meshes with the power gear (306). A third output gear (313) is sleeved outside the second auxiliary shaft (312). When the rotor (6) rotates reversely, the electromagnetic push rod (310) will push the second output gear (311) to make it enter between the power gear (306) and the third output gear (313) so that it meshes with the power gear (306) and the third output gear (313).

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