Rotor heat pipe cooling structure of permanent magnet motor

Abstract

The utility model relates to the technical field of permanent magnet motors, in particular to a rotor heat pipe cooling structure of a permanent magnet motor, which comprises a permanent magnet motor, a rotating shaft penetrates through the permanent magnet motor, the top of the permanent magnet motor is connected with a water tank, the top of the water tank is provided with a first groove and a second groove, and a miniature water pump is arranged in the second groove. A limiting groove is formed in the second groove, a soft frame is arranged at the top of the limiting groove, a filter screen is embedded in the soft frame, a copper pipe penetrates through the first groove, a connecting pipe is connected to one end of the copper pipe in an inserted mode, the other end of the connecting pipe is connected with a water outlet of the micro water pump, and fins are arranged in the rotating shaft. According to the rotor heat pipe cooling structure of the permanent magnet motor, the cooling liquid can flow back into the water tank through the bent pipe arranged at the other end of the copper pipe, the cooling liquid can be filtered through the filter screen embedded in the soft frame, impurities in the cooling liquid are prevented from flowing into the micro water pump, and the micro water pump is prevented from being blocked.

Description

Technical Field

[0001] This utility model relates to a cooling structure for a permanent magnet motor, and more particularly to a rotor heat pipe cooling structure for a permanent magnet motor, belonging to the field of permanent magnet motor technology. Background Technology

[0002] The working principle of a permanent magnet motor is as follows: when current flows through the coil of the permanent magnet motor, a magnetic field is generated around the coil. This magnetic field interacts with the permanent magnet, causing the permanent magnet to experience a certain torque, thus making it rotate. The direction of the current in the coil and the direction of the magnetic field of the permanent magnet determine the direction of the torque on the permanent magnet, thereby controlling the rotation of the motor.

[0003] The permanent magnet motors commonly found on the market dissipate heat from the shaft using coolant and use a miniature water pump to return the coolant inside the copper pipe to the water tank. However, the existing cooling mechanism for permanent magnet motors is not very well-designed, especially since the returned coolant cannot be effectively filtered. Over time, this can easily cause the miniature water pump to become clogged when drawing coolant. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a rotor heat pipe cooling structure for a permanent magnet motor that can effectively filter the return coolant.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A rotor heat pipe cooling structure for a permanent magnet motor includes a permanent magnet motor, a rotating shaft passing through the interior of the permanent magnet motor, a water tank connected to the top of the permanent magnet motor, and two grooves formed on the top of the water tank; a micro water pump is installed inside the second groove, a limiting groove is formed inside the second groove, a flexible frame is provided on the top of the limiting groove, and a filter screen is embedded inside the flexible frame; a copper tube passes through the first groove, a connecting pipe is inserted at one end of the copper tube, and the other end of the connecting pipe is connected to the outlet of the micro water pump; fins are provided inside the rotating shaft.

[0007] Furthermore, the copper tube is installed inside the rotating shaft, the fins are connected to the outside of the copper tube, a bearing is embedded at one end of the rotating shaft, a rubber block is connected inside the bearing, and the rubber block extends through the outside of the copper tube.

[0008] Furthermore, a bend is inserted into the other end of the copper tube, one end of which penetrates the inside of the second groove. The top of the filter screen corresponds to the bottom of one end of the bend, and the inlet of the micro water pump penetrates the inside of the second groove.

[0009] Furthermore, a first groove is formed around the bottom of the sealing cover, a second groove is formed inside the first groove, a first sealing ring is embedded inside the second groove, the top of the water tank is connected to the inside of the first groove, and coolant is injected into the inside of the second groove.

[0010] Furthermore, a set of slots three are provided at the bottom of each of the flexible frames, and a magnet one is embedded inside the slot four. A set of slots four are provided at the top of each of the limiting slots, and a magnet two is embedded inside the slot four. Magnet one and magnet two attract each other.

[0011] Furthermore, a second sealing ring is embedded in the outside of the flexible frame, the outside of the second sealing ring fits into the inside of the second groove, and the part of the copper tube exposed outside the permanent magnet motor is covered with wire mesh.

[0012] Furthermore, one end of the wire mesh is fixedly connected to one side of the water tank, and the other end of the wire mesh is fixedly connected to one end of the permanent magnet motor housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] The rotor heat pipe cooling structure of the permanent magnet motor of this application allows the coolant to flow back into the water tank through a bend at the other end of the copper pipe. A limiting groove is provided inside the groove two, and a flexible frame is provided at the top of the limiting groove. The coolant can be filtered through the filter screen embedded inside the flexible frame to prevent impurities inside the coolant from flowing into the micro water pump and avoid clogging of the micro water pump. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the permanent magnet motor structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the top structure of the permanent magnet motor of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the water tank of this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the permanent magnet motor of this utility model;

[0019] Figure 5 This is a schematic diagram of structure A of this utility model.

[0020] In the diagram, 1-Permanent magnet motor; 2-Shaft; 3-Water tank; 301-Flexible frame; 302-Copper pipe; 303-Miniature water pump; 304-Connecting pipe; 305-Limiting groove; 306-Groove one; 307-Bearing; 308-Fin; 309-Filter screen; 310-Sealing cover; 311-Groove two; 312-Wire mesh. Detailed Implementation

[0021] The technical solution of this utility model will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1-5 As shown, this embodiment provides a rotor heat pipe cooling structure for a permanent magnet motor 1, which includes a permanent magnet motor 1, a rotating shaft 2 passing through the inside of the permanent magnet motor 1, and a water tank 3 connected to the top of the permanent magnet motor 1 by bolts. The top of the water tank 3 has a first groove 306 and a second groove 311. A micro water pump 304 is installed inside the second groove 311, and a limiting groove 305 is opened inside the second groove 311. A flexible frame 301 is provided on the top of the limiting groove 305, and a filter screen 309 is embedded inside the flexible frame 301. A copper pipe 302 passes through the first groove 306, and a connecting pipe 304 is inserted into one end of the copper pipe 302. The other end of the connecting pipe 304 is connected to the outlet of the micro water pump 304. A fin 308 is provided inside the rotating shaft 2.

[0023] like Figure 3 , Figure 5 As shown, the copper tube 302 is further disposed inside the rotating shaft 2, and the fins 308 are connected to the outside of the copper tube 302. One end of the rotating shaft 2 is inlaid with a bearing 307, and a rubber block is connected inside the bearing 307. The rubber block is disposed outside the copper tube 302. The fins 308 are conducive to heat dissipation of the rotating shaft 2, and at the same time prevent the copper tube 302 from rotating straight when the rotating shaft 2 rotates.

[0024] like Figure 2 and Figure 3 As shown, the other end of the copper pipe 302 is further connected to a bend, one end of which passes through the inside of the second groove 311. The top of the filter screen 309 corresponds to the bottom of one end of the bend, and the inlet of the micro water pump 304 passes through the inside of the second groove 311. This structure is beneficial for the water pump to transfer the coolant inside the copper pipe 302 to the inside of the water tank 3.

[0025] like Figure 2 , Figure 4 As shown, further, a first groove is provided around the bottom of the sealing cover 310, a second groove is provided inside the first groove, a sealing ring is embedded inside the second groove, the top of the water tank 3 is connected to the inside of the first groove, and coolant is injected into the inside of the second groove 311. This structure can prevent the coolant inside the water tank 3 from leaking.

[0026] like Figure 1 as well as Figure 5As shown, further, a set of slots three are provided at the bottom of each flexible frame 301, and a magnet one is embedded inside the slot four. A set of slots four are provided at the top of each limiting groove 305, and a magnet two is embedded inside the slot four. The magnet one and the magnet two attract each other. This structure facilitates the disassembly of the filter screen 309. A sealing ring two is embedded on the outside of the flexible frame 301. The outside of the sealing ring two fits into the inside of the groove two 311 to prevent coolant from leaking to the outside of the filter screen 309. The part of the copper tube 302 that protrudes from the permanent magnet motor 1 is covered with a wire mesh. One end of the wire mesh is fixedly connected to one side of the water tank 3, and the other end of the wire mesh is fixedly connected to one end of the housing of the permanent magnet motor 1, which protects the copper tube 302 and prevents scratches from appearing on the outside of the copper tube 302.

[0027] like Figures 1-5 As shown, further, the principle of the rotor heat pipe cooling structure of the permanent magnet motor 1 provided in this embodiment is as follows: First, coolant is injected into the second groove 311. Then, the micro water pump 304 is started. The outlet of the micro water pump 304 draws the coolant from the second groove 311. Since the micro water pump 304 is connected to one end of the copper pipe 302 through the connecting pipe 304, the coolant flows into the copper pipe 302. The copper pipe 302 is installed inside the rotating shaft 2. The coolant inside the copper pipe 302 can dissipate heat from the inside of the rotating shaft 2, preventing the rotating shaft 2 from overheating. If the temperature is too high during operation, the fins 308 connected inside the rotating shaft 2 can effectively dissipate heat through the fins 308 themselves. The coolant can flow back into the water tank 3 through the bend at the other end of the copper pipe 302. The groove 311 has a limiting groove 305 inside, and a flexible frame 301 is set on the top of the limiting groove 305. The filter screen 309 embedded inside the flexible frame 301 can filter the coolant, preventing impurities inside the coolant from flowing into the micro water pump 304 and avoiding blockage of the micro water pump 304.

[0028] The foregoing description illustrates and describes preferred embodiments of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein. Any modifications and variations made by those skilled in the art without departing from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A rotor heat pipe cooling structure for a permanent magnet motor, comprising a permanent magnet motor (1), characterized in that: The permanent magnet motor (1) has a rotating shaft (2) running through its interior. The top of the permanent magnet motor (1) is connected to a water tank (3). The top of the water tank (3) has a groove one (306) and a groove two (311). The interior of the second groove (311) is equipped with a micro water pump (303), and the interior of the second groove (311) is provided with a limiting groove (305). A flexible frame (301) is provided on the top of the limiting groove (305), and a filter screen (309) is embedded inside the flexible frame (301). A copper tube (302) runs through the interior of the first groove (306). One end of the copper tube (302) is connected to a connecting pipe (304), and the other end of the connecting pipe (304) is connected to the outlet of the micro water pump (303). The shaft (2) is provided with fins (308) inside.

2. The rotor heat pipe cooling structure of the permanent magnet motor according to claim 1, characterized in that: The copper tube (302) is installed inside the rotating shaft (2), the fin (308) is connected to the outside of the copper tube (302), and a bearing (307) is embedded at one end of the rotating shaft (2). A rubber block is connected inside the bearing (307), and the rubber block extends through the outside of the copper tube (302).

3. The rotor heat pipe cooling structure of the permanent magnet motor according to claim 1, characterized in that: The other end of the copper tube (302) is connected to a bend, one end of which passes through the inside of the second groove (311). The top of the filter screen (309) corresponds to the bottom of one end of the bend, and the inlet of the micro water pump (303) passes through the inside of the second groove (311).

4. The rotor heat pipe cooling structure of the permanent magnet motor according to claim 1, characterized in that: The bottom of each of the flexible frames (301) is provided with a set of slots three, and a magnet one is embedded inside the slot four. The top of each of the limiting grooves (305) is provided with a set of slots four, and a magnet two is embedded inside the slot four.

5. The rotor heat pipe cooling structure of the permanent magnet motor according to claim 3, characterized in that: The flexible frame (301) is inlaid with a sealing ring II, the outside of the sealing ring II is in contact with the inside of the groove II (311), and the part of the copper tube (302) that is exposed outside the permanent magnet motor (1) is covered with wire mesh (312).

6. The rotor heat pipe cooling structure of the permanent magnet motor according to claim 5, characterized in that: One end of the wire mesh (312) is fixedly connected to one side of the water tank (3), and the other end of the wire mesh (312) is fixedly connected to one end of the housing of the permanent magnet motor (1).

Images