Water-cooled heat dissipation type permanent magnet synchronous motor

Abstract

The application discloses a water-cooling heat dissipation type permanent magnet synchronous motor, which comprises a motor shell, a circulating replacement mechanism and a water-cooling pipe are arranged in the inner interlayer of the motor shell, the circulating replacement mechanism comprises a circulating replacement box, a rotatable rotating box is arranged in the inner interlayer of the circulating replacement box, a recovery cavity and a circulation cavity are arranged in the interlayer of the rotating box, and a positioning structure for limiting rotation of the rotating box is arranged. The overheated cooling liquid enters the recovery cavity, then the low-temperature cooling liquid in the circulation cavity enters the water-cooling pipe, after the cold-heat replacement is completed, the floating ball in the recovery cavity floats up, the floating ball in the circulation cavity falls down, drives the extrusion assembly to move away from the stop assembly, the gravity makes the cooling liquid press the rotating box to rotate, the recovery cavity is located at the bottom of the motor and waits for natural cooling, and the two portions of the cooling liquid are circulated and used, so that the temperature of the cooling liquid is prevented from being too high to take away the heat in the motor, and the heat dissipation efficiency and service life of the motor are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of permanent magnet synchronous motors, and particularly relates to a water-cooled heat dissipation type permanent magnet synchronous motor. BACKGROUND

[0002] Currently commonly used motors are brushless DC motors, permanent magnet synchronous motors, squirrel cage asynchronous motors and switched reluctance motors. The permanent magnet synchronous motor has high power density, high power factor, high efficiency, large starting torque and small noise, and is widely applied to coal mines, new energy vehicles, generators, air conditioners, vacuum pumps, coal mining machine cutting parts and the like.

[0003] During long-term operation of the motor, a large amount of heat is generated, and the cooling liquid that plays a role in cooling is also gradually heated over time, thereby affecting the heat dissipation efficiency of the motor, failing to rapidly cool the motor, causing the temperature of the motor to rise, and the magnetic steel in the rotor has the risk of demagnetization under high temperature, thereby affecting the efficiency, reliability and service life of the motor. SUMMARY

[0004] The application proposes the following technical scheme in view of the problems in the prior art.

[0005] The water-cooled heat dissipation type permanent magnet synchronous motor comprises a motor shell, a circulating replacement mechanism and a water-cooled pipe are arranged in the inner interlayer of the motor shell, the circulating replacement mechanism comprises a circulating replacement box, a rotatable rotating box is arranged in the inner interlayer of the circulating replacement box, a recovery cavity and a circulation cavity are arranged in the interlayer of the rotating box, and a positioning structure for limiting rotation of the rotating box is arranged.

[0006] The positioning structure comprises a guide column fixed between the interlayers of the rotating box, a stop component is arranged in the guide column, the stop component penetrates the rotating box and abuts against the circulating replacement box, a floating ball is movably arranged on the outer ring of the guide column, an extrusion component matched with the stop component is arranged in the floating ball, and the two guide columns are arranged in the recovery cavity and the circulation cavity respectively.

[0007] The overheated cooling liquid enters the recovery cavity, and then the low-temperature cooling liquid in the circulation cavity enters the water-cooled pipe, after completion of the cold-hot replacement, the floating ball in the recovery cavity floats up, the floating ball in the circulation cavity falls down, the extrusion component is driven away from the stop component, the center of gravity causes the rotating box to rotate under the pressure of the cooling liquid, and the recovery cavity is located at the bottom of the motor and waits for natural cooling.

[0008] As a preferred technical scheme of the above technical scheme, the stop component comprises:

[0009] The guide rod is fixed in the inner wall of the sliding port, and the outer ring of the guide rod is movably sleeved with the push plate, the spring is connected between the two push plates, the side wall of the push plate is fixedly connected with the positioning rod, and the positioning rod penetrates the rotating box and abuts against the circulating replacement box.

[0010] As the preferred technical scheme, the extrusion assembly comprises:

[0011] The connecting rod is fixedly connected with the floating ball, the guide column is provided with the sliding port, the connecting rod is in sliding fit with the sliding port, one side of the connecting rod is fixedly connected with the extrusion plate, and the extrusion plate is located between the two push plates.

[0012] As the preferred technical scheme, the rotating box comprises:

[0013] The outer barrel two is internally provided with the inner barrel two, the inner barrel two and the outer barrel two are fixedly connected with the two partition plates, and the positioning rod penetrates the inner barrel two.

[0014] As the preferred technical scheme, the circulating replacement box comprises:

[0015] The outer barrel one is internally provided with the inner barrel one, the outer surface of the inner barrel one is provided with the sliding groove, the end, away from the push plate, of the positioning rod extends into the sliding groove and is fixedly connected with the anti-skid pad abutting against the sliding groove, the outer surface of the outer barrel two is attached to the inner surface of the outer barrel one, the inner surface of the inner barrel two is attached to the outer surface of the inner barrel one, and the inner barrel one and the outer barrel one are fixedly connected with the annular plate two arranged on the two sides of the outer barrel two.

[0016] As the preferred technical scheme, the water-cooled pipe comprises:

[0017] The spiral pipe is located in the inner ring of the inner barrel one, the spiral pipe is installed with the communication pipe one and the communication pipe two, the recovery cavity and the circulation cavity are respectively penetrated through the two annular plates two and communicated with each other, the communication pipe one and the communication pipe two are both installed with the electromagnetic valve, and the water inlet end of the spiral pipe is installed with the temperature sensor electrically connected with the electromagnetic valve.

[0018] As the preferred technical scheme, the motor shell comprises:

[0019] The inner shell is arranged in the inner ring of the outer shell, the outer surface of the outer barrel one is attached to the inner surface of the outer shell, the spiral pipe is sleeved on the outer surface of the inner shell, the water outlet end and the water inlet end of the spiral pipe are both penetrated through the outer shell, and the annular plate one is detachably arranged between the outer shell and the inner shell.

[0020] The beneficial effects of the present application are as follows:

[0021] 1. In the present invention, the overheated coolant enters the recovery chamber, and then the low-temperature coolant in the circulation chamber enters the water-cooling pipe. After the hot and cold replacement is completed, the float in the recovery chamber floats up, and the float in the circulation chamber falls, driving the extrusion assembly away from the brake assembly. The center of gravity causes the coolant to press the rotating box to rotate, so that the recovery chamber is located at the bottom of the motor and waits for natural cooling. The two coolants are circulated for use to prevent their temperature from being too high to remove the heat inside the motor, thereby improving the heat dissipation efficiency and service life of the motor.

[0022] 2. In the present invention, when the temperature of the coolant in the water-cooling pipe exceeds 80°C, the heat cannot be taken away quickly. At this time, the solenoid valve opens, allowing the high-temperature coolant inside the water-cooling pipe to flow into the recovery chamber, and the low-temperature coolant in the circulation chamber to flow into the water-cooling pipe. After the replacement is completed, the solenoid valve is closed to maintain the heat dissipation efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Shown is a schematic diagram of the exploded structure of a water-cooled permanent magnet synchronous motor in an embodiment;

[0024] Figure 2 The figure shows a schematic structural diagram of a water-cooled permanent magnet synchronous motor in an embodiment;

[0025] Figure 3 What is shown is a schematic structural diagram of the cyclic replacement mechanism in the embodiment;

[0026] Figure 4 Shown is Figure 1 A schematic diagram of the structure enlargement at point A;

[0027] Figure 5 Shown is a schematic structural diagram of the positioning structure in the embodiment.

[0028] Description of reference numerals:

[0029] 10. Motor housing; 11. Outer shell; 12. Inner shell; 13. Ring plate 1; 20. Circular replacement mechanism; 21. Circular replacement box; 211. Outer liner 1; 212. Inner liner 1; 213. Ring plate 2; 214. Slide; 22. Rotating box; 221. Outer liner 2; 222. Inner liner 2; 223. Partition plate; 23. Positioning structure; 231. Guide column; 232. Slide; 234. Float; 235. Connecting rod; 236. Extrusion plate; 237. Guide rod; 238. Push plate; 239. Spring; 2310. Positioning rod; 2311. Anti-slip pad; 30. Water cooling pipe; 31. Spiral pipe; 32. Connecting pipe 1; 33. Connecting pipe 2. DETAILED DESCRIPTION

[0030] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be described clearly and completely below in conjunction with embodiments.

[0031] Embodiments

[0032] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , the water-cooled heat dissipation type permanent magnet synchronous motor comprises a motor shell 10, a circulating replacement mechanism 20 and a water-cooled pipe 30 are arranged in the inner interlayer of the motor shell 10, the circulating replacement mechanism 20 comprises a circulating replacement box 21, a rotatable rotating box 22 is arranged in the inner interlayer of the circulating replacement box 21, a recycling cavity and a circulating cavity are arranged in the interlayer of the rotating box 22, and a positioning structure 23 for limiting rotation of the rotating box 22 is arranged, the recycling cavity and the circulating cavity are respectively connected with a water inlet end and a water outlet end of the water-cooled pipe 30, the positioning structure 23 comprises a guide column 231 fixed between the interlayers of the rotating box 22, a stop component is arranged in the guide column 231, the stop component penetrates through the rotating box 22 and abuts against the circulating replacement box 21, a floating ball 234 is movably sleeved on the outer ring of the guide column 231, an extrusion component matched with the stop component is arranged in the floating ball 234, and two guide columns 231 are respectively located in the recycling cavity and the circulating cavity.

[0033] Specifically, the overheated cooling liquid enters the recycling cavity, then the low-temperature cooling liquid in the circulating cavity enters the water-cooled pipe 30, after the cold-hot replacement is completed, the floating ball 234 in the recycling cavity floats up, the floating ball 234 in the circulating cavity falls down, the extrusion component is driven away from the stop component, the center of gravity causes the cooling liquid to press the rotating box 22 to rotate, the recycling cavity is located at the bottom of the motor and waits for natural cooling, and the two cooling liquids are circulated for use, so that the temperature of the cooling liquid is prevented from being too high to remove the heat in the motor, and the heat dissipation efficiency and service life of the motor are improved.

[0034] As shown in Figure 3 , Figure 4 and Figure 5 , the stop component comprises a guide rod 237, the guide rod 237 is fixed in the inner wall of the sliding port 232, a push plate 238 is movably sleeved on the outer ring of the guide rod 237, springs 239 are connected between the two push plates 238, positioning rods 2310 are fixedly connected to the side walls of the push plates 238, and the positioning rods 2310 penetrate through the rotating box 22 and abut against the circulating replacement box 21.

[0035] Specific, guide rod 237 is provided with at least two, for increasing the stability of the push plate 238 in the guide rod 237 sliding, guide rod 237 is two thin middle thick round bar, so that two push plate 238 can not be combined to the middle, spring 239 set in the outer ring of guide rod 237, for preventing the process of shrinkage, bending, by the force of spring 239, make push plate 238 in the absence of any external interference, two push plate 238 to the middle, when the positioning rod 2310 will not with the cycle replacement box 21 conflict, when the extrusion assembly to two push plate 238 middle, will separate two push plate 238, push positioning rod 2310 with the cycle replacement box 21 conflict, make rotating box 22 can't rotate in the interlayer of cycle replacement box 21.

[0036] As Figure 3 , Figure 4 and Figure 5 , the extrusion assembly includes connecting rod 235, connecting rod 235 and the ball 234 is fixedly connected, guide column 231 is provided with slide 232, connecting rod 235 and slide 232 sliding fit, and one side of connecting rod 235 is fixedly connected with extrusion plate 236, extrusion plate 236 is located between two push plate 238.

[0037] Specifically, the height of the ball 234 will change with the liquid level height of the cooling oil in the recovery cavity or the circulation cavity, so as to drive the extrusion plate 236 to move through the connecting rod 235, and the side of the extrusion plate 236 away from the connecting rod 235 is tapered, so that it is convenient to insert between the two push plate 238 and extrude them apart.

[0038] As Figure 1 , Figure 3 and Figure 4 , the rotating box 22 includes outer shell two 221, the inner shell two 221 is provided with inner shell two 222, the inner shell two 222 and the outer shell two 221 between the fixed connection has two partition plate 223, positioning rod 2310 through the inner shell two 222.

[0039] Specifically, the two partition plate 223 divides the interlayer between the outer shell two 221 and the inner shell two 222 into two semicircular cavities with the same volume, which are recovery cavity and circulation cavity, respectively, and the guide column 231 is located at the middle position of the semicircular cavity. In the initial state, the recovery cavity is free of cooling liquid, and the cooling liquid is arranged in the circulation cavity at the bottom, waiting for replacement.

[0040] As Figure 1 , Figure 3 and Figure 4As shown, the circulating replacement box 21 comprises an outer barrel 211, the inner barrel 211 is internally provided with an inner barrel 212, the outer surface of the inner barrel 212 is provided with a sliding groove 214, the positioning rod 2310 extends to the sliding groove 214 away from one end of the push plate 238, and is fixedly connected with the anti-skid pad 2311 which is in contact with the sliding groove 214, the outer surface of the outer barrel 221 is attached to the inner surface of the outer barrel 211, the inner surface of the inner barrel 222 is attached to the outer surface of the inner barrel 212, and the inner barrel 212 and the outer barrel 211 are fixedly connected with the annular plate 213 arranged on both sides of the outer barrel 221.

[0041] Specifically, the rotating box 22 can rotate between the outer barrel 211 and the inner barrel 212, and can be sealed by the two annular plates 213 to form a sandwich layer, and the circulating cooling oil is arranged therein, and when the pressing plate 236 enters between the two push plates 238 to separate them, the anti-skid pad 2311 will be in contact with the side wall of the sliding groove 214 to prevent the rotating box 22 from rotating as a whole, and when the pressing plate 236 moves away from the two push plates 238, the anti-skid pad 2311 will move away from the side wall of the sliding groove 214, so that the positioning structure 23 can rotate.

[0042] As shown in Figure 1 and Figure 2 The water-cooled pipe 30 comprises a spiral pipe 31, the spiral pipe 31 is located in the inner ring of the inner barrel 212, and the spiral pipe 31 is provided with a communication pipe 1 32 and a communication pipe 2 33, the recovery cavity and the circulating cavity are respectively communicated with the recovery cavity and the circulating cavity through the two annular plates 213, and the communication pipe 1 32 and the communication pipe 2 33 are both provided with electromagnetic valves, and the water inlet end of the spiral pipe 31 is provided with a temperature sensor electrically connected with the electromagnetic valve.

[0043] Specifically, the temperature sensor is not limited to the model SVT200-T, when the temperature of the cooling liquid in the water-cooled pipe 30 exceeds 80-90℃, the temperature sensor cannot quickly remove the heat, at this time the electromagnetic valve is opened, the high-temperature cooling liquid in the water-cooled pipe 30 flows into the recovery cavity, the low-temperature cooling liquid in the circulating cavity flows into the water-cooled pipe 30, and after the replacement is completed, the electromagnetic valve is closed, so as to maintain the heat dissipation efficiency of the motor.

[0044] As shown in Figure 1 and Figure 2 The motor housing 10 comprises an outer shell 11, the inner ring of the outer shell 11 is provided with an inner shell 12, the outer surface of the outer barrel 211 is attached to the inner surface of the outer shell 11, the spiral pipe 31 is sleeved on the outer surface of the inner shell 12, and the water outlet end and the water inlet end of the spiral pipe 31 both penetrate the outer shell 11, and the annular plate 1 13 is detachably arranged between the outer shell 11 and the inner shell 12.

[0045] The above embodiments are only used to illustrate the technical solutions of the present application, but not limited thereto.

Claims

1. A water-cooled permanent magnet synchronous motor, comprising a motor housing (10), characterized in that: The inner interlayer of the motor housing (10) is provided with a circulation replacement mechanism (20) and a water cooling pipe (30), the circulation replacement mechanism (20) includes a circulation replacement box (21), the inner interlayer of the circulation replacement box (21) is provided with a rotatable rotating box (22), the interlayer of the rotating box (22) is provided with a recovery chamber and a circulation chamber, and a positioning structure (23) for limiting its own rotation is also provided, the recovery chamber and the circulation chamber are respectively connected to the water inlet end and the drainage end of the water cooling pipe (30); The positioning structure (23) includes a guide column (231) fixed between the interlayers of the rotating box (22), a brake assembly is provided inside the guide column (231), the brake assembly passes through the rotating box (22) and contacts the circulation replacement box (21), a floating ball (234) is provided on the outer ring of the guide column (231), and an extrusion assembly that cooperates with the brake assembly is provided inside the floating ball (234), and the two guide columns (231) are respectively located in the recovery chamber and the circulation chamber; The superheated coolant enters the recovery chamber, and then the low-temperature coolant in the circulation chamber enters the water-cooling pipe (30). After the hot and cold replacement is completed, the float (234) in the recovery chamber floats up, and the float (234) in the circulation chamber falls, driving the extrusion component away from the brake component. The center of gravity causes the coolant to press the rotating box (22) to rotate, so that the recovery chamber is located at the bottom of the motor and waits for natural cooling.

2. The water-cooled permanent magnet synchronous motor according to claim 1, characterized in that: The brake components include: A guide rod (237) is fixed in the inner wall of the sliding opening (232), and a push plate (238) is movably sleeved on the outer ring of the guide rod (237), a spring (239) is connected between the two push plates (238), and a positioning rod (2310) is fixedly connected to the side wall of the push plate (238), and the positioning rod (2310) passes through the rotating box (22) and contacts the circulating replacement box (21).

3. The water-cooled permanent magnet synchronous motor according to claim 2, characterized in that: Extrusion components include: A connecting rod (235) is fixedly connected to the floating ball (234), the guide column (231) is provided with a sliding opening (232), the connecting rod (235) and the sliding opening (232) are slidably matched, and one side of the connecting rod (235) is fixedly connected to an extrusion plate (236), and the extrusion plate (236) is located between the two push plates (238).

4. The water-cooled permanent magnet synchronous motor according to claim 2, characterized in that: The rotating box (22) comprises: The outer liner (221) is provided with an inner liner (222) inside. Two partition plates (223) are fixedly connected between the inner liner (222) and the outer liner (221). The positioning rod (2310) passes through the inner liner (222).

5. The water-cooled permanent magnet synchronous motor according to claim 4, characterized in that: The circulating replacement box (21) comprises: An outer liner (211) is provided with an inner liner (212) inside the outer liner (211), a slide groove (214) is provided on the outer surface of the inner liner (212), one end of the positioning rod (2310) away from the push plate (238) extends into the slide groove (214), and is fixedly connected with an anti-slip pad (2311) that contacts the slide groove (214), the outer surface of the outer liner (221) is in contact with the inner surface of the outer liner (211), the inner surface of the inner liner (222) is in contact with the outer surface of the inner liner (212), and an annular plate (213) is fixedly connected between the inner liner (212) and the outer liner (211) and is arranged on both sides of the outer liner (221).

6. The water-cooled permanent magnet synchronous motor according to claim 5, characterized in that: The water cooling pipe (30) comprises: A spiral tube (31), the spiral tube (31) is located in the inner ring of the inner tank (212), and the spiral tube (31) is equipped with a connecting tube (32) and a connecting tube (33), the recovery chamber and the circulation chamber respectively pass through the two annular plates (213) and are interconnected with the recovery chamber and the circulation chamber, and the connecting tube (32) and the connecting tube (33) are both equipped with electromagnetic valves, and the water inlet end of the spiral tube (31) is equipped with a temperature sensor electrically connected to the electromagnetic valve.

7. The water-cooled permanent magnet synchronous motor according to claim 6, characterized in that: The motor housing (10) comprises: An outer shell (11), an inner shell (12) is provided on the inner ring of the outer shell (11), an outer surface of the outer liner (211) is in contact with the inner surface of the outer shell (11), the spiral tube (31) is sleeved on the outer surface of the inner shell (12), and the water outlet and water inlet ends of the spiral tube (31) both pass through the outer shell (11), and a detachable annular plate (13) is installed between the outer shell (11) and the inner shell (12).

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