A multi-cooling permanent magnet synchronous variable frequency motor

Abstract

The present invention relates to the field of motor technology, and proposes a multi-cooling permanent magnet synchronous variable frequency motor, including a housing, a stator and a mover, and also including a heat sink, a cooling fan, a water cooling mechanism and a driving mechanism. A plurality of heat sinks are provided, and the heat sink is fixedly connected to the outside of the housing. The cooling fan and the mover are coaxially fixedly connected. An air outlet is provided on the housing, and the water cooling mechanism is used to water-cool the housing. The water cooling mechanism includes a cold water pipe and a heat dissipation network. The cold water pipe passes through a plurality of heat sinks, and the top of the heat dissipation network is connected to the top of the cold water pipe through a water supply pipe, and the bottom of the heat dissipation network is connected to the bottom of the cold water pipe through a return pipe. The heat dissipation network is located at the housing and the outside and corresponds to the position of the air outlet. The driving mechanism is used to drive cold water to circulate in the cold water pipe and the heat dissipation network. Through the above technical scheme, the problem that the cooling effect of a single cooling method in the prior art is relatively limited is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a multi-cooling permanent magnet synchronous variable frequency motor. Background Art

[0002] The permanent magnet synchronous variable frequency motor uses permanent magnets as the magnetic field source and realizes motor speed regulation by changing the power supply frequency of the motor. This type of motor has a relationship between synchronous speed and power supply frequency, so it can still maintain stable torque output under high-speed operation.

[0003] Permanent magnet synchronous variable frequency motors generally dissipate heat through air cooling or gas cooling. Air cooling dissipates heat through the motor's axial fan or radial fan, while gas cooling dissipates heat through a special air cooling system, such as an induced draft fan, a centrifugal fan, etc. However, it is only a single cooling method and the heat dissipation effect is relatively limited. When the motor runs for a long time or the load changes, the internal temperature of the motor rises, which may still cause the motor performance to decline or be damaged. Therefore, we propose a multi-cooling permanent magnet synchronous variable frequency motor, which uses multiple cooling methods to cool the motor and reduce high temperature damage to the motor. Summary of the invention

[0004] The present invention provides a multi-cooling permanent magnet synchronous variable frequency motor, which solves the problem of limited cooling effect of a single cooling method in the prior art.

[0005] The technical solution of the present invention is as follows:

[0006] A multi-cooling permanent magnet synchronous variable frequency motor comprises a housing, a stator and a mover, and further comprises:

[0007] A heat sink, wherein a plurality of heat sinks are provided and the heat sinks are fixedly connected to the outside of the housing;

[0008] A cooling fan, wherein the cooling fan and the mover are coaxially fixedly connected, and an air outlet is provided on the housing;

[0009] A water cooling mechanism, the water cooling mechanism is used to cool the shell with water, and the water cooling mechanism includes:

[0010] A cold water pipe, the cold water pipe passing through the plurality of heat sinks;

[0011] A heat dissipation network, wherein the top of the heat dissipation network is connected to the top of the cold water pipe through a water supply pipe, and the bottom of the heat dissipation network is connected to the bottom of the cold water pipe through a return pipe, and the heat dissipation network is located outside the shell and corresponds to the position of the air outlet;

[0012] A driving mechanism, the driving mechanism is used to drive cold water to circulate in the cold water pipe and the heat dissipation pipe network, and the driving mechanism includes:

[0013] An air supply cylinder, the air supply cylinder is fixedly connected to the shell;

[0014] A reciprocating screw, the reciprocating screw is rotatably connected to the inside of the air supply cylinder, and the reciprocating screw is coaxially fixedly connected to the cooling fan through a connecting rod;

[0015] A driving plate, the driving plate is sealingly and slidably connected to the inside of the air supply cylinder, and the driving plate and the reciprocating screw are threadedly matched;

[0016] An air intake pipe, wherein two air intake pipes are provided, and the two air intake pipes are located on both sides of the air supply cylinder, and a one-way valve is installed on the air intake pipe;

[0017] An air outlet pipe, wherein two air outlet pipes are provided, and the two air outlet pipes are located on both sides of the air supply cylinder, and a one-way valve is installed on the air outlet pipe, and the air outlet pipe is connected to the water return pipe;

[0018] A one-way valve is installed on the water return pipe, and the one-way valve is located between the connecting point between the air outlet pipe and the water return pipe and the cold water pipe.

[0019] In order to improve the cooling effect on the shell, the top of the cold water pipe is connected with a spray pipe, the spray pipe is connected with a plurality of drip pipes, and the heat sink is provided with a water hole for water to pass through.

[0020] In order to further reduce the loss of water, a water collection component is also included, and the water collection component includes:

[0021] A water collecting cylinder, the water collecting cylinder is fixedly connected to the outside of the shell;

[0022] A water suction pipe is connected to the bottom of the cold water pipe, and the bottom of the water suction pipe is connected to a plurality of water pumping pipes.

[0023] In order to ensure the heat dissipation effect of the heat sink, the heat sink passes through the water collecting cylinder and extends to the outside of the water collecting cylinder.

[0024] In order to improve the heat dissipation effect of the heat dissipation network, an auxiliary heat dissipation mechanism is also included, and the auxiliary heat dissipation mechanism is used to air-cool the heat dissipation network. The auxiliary heat dissipation mechanism includes:

[0025] A driving shaft, the driving shaft is rotatably connected to the housing, and the driving shaft is drivingly connected to the connecting rod;

[0026] The fan blades are provided in plurality and are fixedly connected to the outside of the driving shaft, and the fan blades blow air toward the heat dissipation pipe network.

[0027] In order to realize the transmission connection between the drive shaft and the connecting rod, the drive shaft is connected to the connecting rod through a transmission assembly, and the transmission assembly includes:

[0028] A transmission rod, the transmission rod is rotatably connected to the housing, and the transmission rod and the connecting rod are connected through a sprocket chain transmission;

[0029] A driving bevel gear, the driving bevel gear is fixedly connected to one end of the transmission rod close to the driving shaft;

[0030] A driven bevel gear is fixedly connected to one end of the driving shaft close to the transmission rod, and the driven bevel gear is meshed with the driving bevel gear.

[0031] The working principle and beneficial effects of the present invention are:

[0032] 1. In the present invention, the output shaft of the motor is driven to rotate by the rotation of the rotor, and at the same time, the rotor drives the cooling fan to rotate, and the heat generated by the motor is blown out through the air outlet to dissipate the heat of the motor. At the same time, the heat sink is in contact with the outside world, and heat is exchanged between the motor and the external environment, and heat is dissipated through the shell and the heat sink.

[0033] 2. In the present invention, the rotor drives the cooling fan, the connecting rod and the reciprocating screw to rotate, and drives the driving plate to reciprocate inside the air supply cylinder. During the movement of the driving plate, the outside air is sucked into the inside of the air supply cylinder through the air inlet pipe, and the air of the air supply cylinder is sent into the inside of the return pipe through the air outlet pipe. Under the action of the one-way valve, the cold water in the heat dissipation network is pushed into the inside of the cold water pipe through the water supply pipe, and the heat sink and the shell are cooled by the cold water. The cold water in the cold water pipe flows back to the inside of the heat dissipation network through the return pipe to realize the circulation of cold water. At the same time, the cooling fan cools the heat dissipation network by air cooling to ensure the low temperature state of the cold water, thereby ensuring the cooling effect on the shell.

[0034] 3. In the present invention, part of the cold water in the cold water pipe drips onto the surface of the shell through the spray pipe and the drip pipe, and at the same time, the water falls along the shell and the water outlet to cool the shell, and the cold water falls into the interior of the water collecting tube. The air pushes the cold water in the cold water pipe to flow toward the heat dissipation network, while the water suction pipe and the pumping pipe suck the cold water in the water collecting tube into the interior of the heat dissipation network, thereby realizing the circulation of cold water.

[0035] 4. Therefore, compared with the method in the prior art in which the permanent magnet synchronous variable frequency motor is cooled by a single cooling fan, the present invention realizes heat dissipation of the motor by a cooling fan and a heat sink. At the same time, the cooling fan drives the reciprocating screw to rotate, drives the driving plate to reciprocate inside the air supply cylinder, supplies air to the return pipe, and pushes the cold water in the cold water pipe to flow back to the heat dissipation network. The heat dissipation network is cooled by air through the cooling fan, and the heat sink and the shell are cooled by the cold water pipe. At the same time, the drip pipe drips part of the cold water on the shell, and the shell is water-cooled. The cold water falls into the water collecting tube for collection. Under the action of the air outlet pipe, the pumping pipe draws the cold water in the water collecting tube out and sends it into the heat dissipation network to realize the circulation of cold water. The connecting rod drives the drive shaft and the fan blades to rotate through the transmission assembly, and the heat dissipation network is auxiliary cooled. The present invention adopts a multiple cooling method to cool the motor, and the cooling effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] Figure 1 It is a structural schematic diagram of the first viewing angle of the present invention;

[0038] Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention;

[0039] Figure 3 It is a schematic diagram of the structure of a partial cross-section of the present invention;

[0040] Figure 4 It is a schematic diagram of the structure of the water cooling mechanism, the driving mechanism and the auxiliary heat dissipation mechanism of the present invention;

[0041] Figure 5 It is a schematic diagram of the structure of the driving mechanism and the auxiliary heat dissipation mechanism of the present invention;

[0042] Figure 6 It is a structural schematic diagram of the driving mechanism of the present invention;

[0043] Figure 7 It is a schematic structural diagram of the housing, stator, mover and heat sink of the present invention.

[0044] In the figure:

[0045] 1. Shell; 2. Stator; 3. Mover; 4. Heat sink; 5. Cooling fan; 6. Spray pipe; 7. Drip pipe;

[0046] 101, cold water pipe; 102, heat dissipation pipe network; 103, water supply pipe; 104, return pipe;

[0047] 201, air supply cylinder; 202, reciprocating screw; 203, drive plate; 204, air inlet pipe; 205, air outlet pipe; 206, connecting rod;

[0048] 301, water collecting cylinder; 302, water suction pipe; 303, water extraction pipe;

[0049] 401, driving shaft; 402, fan blade;

[0050] 501, transmission rod; 502, driving bevel gear; 503, driven bevel gear. DETAILED DESCRIPTION

[0051] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] like Figures 1 to 7 As shown, the present embodiment proposes a multi-cooling permanent magnet synchronous variable frequency motor, including a housing 1, a stator 2 and a mover 3, and also includes a heat sink 4, a heat dissipation fan 5, a water cooling mechanism and a driving mechanism. Compared with the method of cooling the permanent magnet synchronous variable frequency motor by a single heat dissipation fan 5 in the prior art, the present invention realizes the heat dissipation of the motor by the heat dissipation fan 5 and the heat dissipation fin 4. At the same time, the heat dissipation fan 5 drives the reciprocating screw 202 to rotate, drives the driving plate 203 to reciprocate inside the air supply cylinder 201, supplies air to the return water pipe 104, and pushes the cold water in the cold water pipe 101 to flow back to the heat dissipation pipe network 102. The heat dissipation fan 5 cools the heat dissipation pipe 102. The net 102 is air-cooled, and the heat sink 4 and the shell 1 are cooled by the cold water pipe 101. At the same time, the drip pipe 7 drips part of the cold water onto the shell 1 to cool the shell 1 by water. The cold water falls into the water collecting cylinder 301 and is collected. Under the action of the air outlet pipe 205, the pumping pipe 303 draws the cold water in the water collecting cylinder 301 out and sends it into the heat dissipation pipe network 102 to realize the circulation of cold water. The connecting rod 206 drives the driving shaft 401 and the fan blades 402 to rotate through the transmission assembly, so as to assist in cooling the heat dissipation pipe network 102. The present invention adopts a multiple cooling method to cool the motor, and the cooling effect is better.

[0053] A plurality of heat sinks 4 are provided, and the heat sink 4 is fixedly connected to the outside of the shell 1. The cooling fan 5 and the mover 3 are coaxially fixedly connected. An air outlet is opened on the shell 1. The permanent magnet synchronous motor is based on the interaction between the rotating magnetic field generated by the stator 2 and the magnetic field generated by the permanent magnets on the rotor. Pre-magnetized permanent magnets are installed on the rotor. These permanent magnets can generate a strong magnetic field when rotating, thereby providing a larger output torque. The control system of the motor will accurately adjust the current to ensure that the motor rotor can rotate synchronously with the rotating magnetic field and maintain a stable operating state. The rotor drives the output shaft to rotate to work, and at the same time, the rotor drives the cooling fan 5 to rotate. The cooling fan 5 blows air toward the air outlet to blow the hot air generated inside the motor to the outside to dissipate the heat of the motor. At the same time, the shell and the heat sink 4 exchange heat between the inside and outside of the motor to dissipate the heat of the motor. The heat sink 4 can increase the contact area with the outside air, thereby improving the heat dissipation effect. A protective net is provided at the air outlet to prevent foreign objects from entering the interior of the motor and causing damage to its internal components.

[0054] The water cooling mechanism is used to cool the shell 1 with water. The water cooling mechanism includes a cold water pipe 101 and a heat dissipation network 102. The cold water pipe 101 passes through a plurality of heat sinks 4. The top of the heat dissipation network 102 is connected to the top of the cold water pipe 101 through a water supply pipe 103, and the bottom of the heat dissipation network 102 is connected to the bottom of the cold water pipe 101 through a return pipe 104. The heat dissipation network 102 is located between the shell 1 and the outside and corresponds to the position of the air outlet. The cold water in the heat dissipation network 102 is sent into the interior of the cold water pipe 101 through the water supply pipe 103, and the cold water in the cold water pipe 101 is sent back to the interior of the heat dissipation network 102 through the return pipe 104. The heat dissipation fan 5 blows air to the heat dissipation network 102. The heat dissipation network 102 is meshed and has certain gaps, so that cold air can pass through, and the heat dissipation network 102 is air-cooled to cool the cold water in the heat dissipation network 102. The cold water is in a low temperature state, which can ensure the cooling effect of the cold water pipe 101 on the shell 1.

[0055] The driving mechanism is used to drive the cold water to circulate in the cold water pipe 101 and the heat dissipation pipe network 102. The driving mechanism includes an air supply cylinder 201, a reciprocating screw 202, a driving plate 203, an air inlet pipe 204 and an air outlet pipe 205. The air supply cylinder 201 is fixedly connected to the housing 1, and the reciprocating screw 202 is rotatably connected to the inside of the air supply cylinder 201. The reciprocating screw 202 is coaxially fixedly connected to the heat dissipation fan 5 through a connecting rod 206. The driving plate 203 is sealingly and slidably connected to the air supply cylinder 201. Inside, the drive plate 203 and the reciprocating screw 202 are threadedly matched, two air inlet pipes 204 are provided, the two air inlet pipes 204 are located on both sides of the air supply cylinder 201, and a one-way valve is installed on the air inlet pipe 204, and two air outlet pipes 205 are provided, the two air outlet pipes 205 are located on both sides of the air supply cylinder 201, and a one-way valve is installed on the air outlet pipe 205. The air outlet pipe 205 is connected to the return water pipe 104, and the return water pipe 104 is installed with a one-way valve. The one-way valve is located between the air outlet pipe 205 and the return water pipe 104. The connecting point between the pipe 104 and the cold water pipe 101 is driven by the cooling fan 5 to rotate the connecting rod 206 and the reciprocating screw 202, driving the driving plate 203 to reciprocate inside the air supply cylinder 201. When the driving plate 203 moves, the pressure in the area away from its moving direction decreases, and the outside air is sucked into the side of the air supply cylinder 201 away from the moving direction of the driving plate 203 through the air inlet pipe 204. At the same time, the driving plate 203 squeezes out the air on one side of its moving direction through the air outlet pipe 205. Air enters the interior of the return pipe 104 through the air outlet pipe 205, pushing the water in the return pipe 104 into the interior of the heat dissipation network 102, and sending the water in the heat dissipation network 102 into the interior of the cold water pipe 101 through the water supply pipe 103, thereby realizing the circulation of cold water. Under the action of the one-way valve, the cold water flows unidirectionally in the return pipe 104, thereby realizing the cold water flow trajectory of the heat dissipation network 102-water supply pipe 103-cold water pipe 101-return pipe 104-heat dissipation network 102.

[0056] In order to improve the cooling effect on the shell 1, the top of the cold water pipe 101 is connected with a spray pipe 6, and the spray pipe 6 is connected with multiple drip pipes 7. A water hole for water to pass through is opened on the heat sink. After the cold water enters the cold water pipe 101, part of the cold water drips onto the surface of the shell 1 through the spray pipe 6 and the drip pipe 7. The water output of the drip pipe 7 is small, which moistens the shell 1, thereby achieving water cooling of the shell 1 and the heat sink, and further improving the cooling effect of the motor.

[0057] In order to further reduce the loss of water, a water collection component is also included, which includes a water collection cylinder 301 and a water suction pipe 302. The water collection cylinder 301 is fixedly connected to the outside of the shell 1, and the water suction pipe 302 is connected to the bottom of the cold water pipe 101. The bottom of the water suction pipe 302 is connected to multiple pumping pipes 303. The heat sink 4 passes through the water collection cylinder 301 and extends to the outside of the water collection cylinder 301. The cold water dripping from the dropper 7 falls along the outer wall of the shell 1 and the water hole. The cold water accumulates in the inside of the water collection cylinder 301. While the shell 1 is cooled by water, the water loss is avoided. The shell 1 of the motor is Waterproof measures are taken for the circuits to prevent cold water from affecting the normal use of the motor. While the air supply cylinder 201 delivers air to the return pipe 104 through the air outlet pipe 205, the heat dissipation network 102 delivers cold water to the cold water pipe 101 and the water collecting cylinder 301. The pressure in the water collecting cylinder 301 increases, pushing the cold water back to the heat dissipation network 102 through the pumping pipe 303, the cold water pipe 101 and the return pipe 104. A pressure relief valve is installed on the top of the water collecting cylinder 301, which automatically releases pressure when the pressure in the water collecting cylinder 301 is too high to prevent the continuous entry of air from causing the water collecting cylinder 301 to burst.

[0058] In order to improve the heat dissipation effect of the heat dissipation network 102, an auxiliary heat dissipation mechanism is also included, which is used to air-cool the heat dissipation network 102. The auxiliary heat dissipation mechanism includes a drive shaft 401 and a fan blade 402. The drive shaft 401 is rotatably connected to the shell 1. The drive shaft 401 is transmission-connected to the connecting rod 206. A plurality of fan blades 402 are provided. The fan blades 402 are fixedly connected to the outside of the drive shaft 401. The fan blades 402 blow air toward the heat dissipation network 102. The drive shaft 401 is transmission-connected to the connecting rod 206 through a transmission assembly. The transmission assembly includes a transmission rod 501, a driving bevel gear 502 and a driven bevel gear 503. The transmission rod 501 is rotatably connected to the shell 1. The transmission rod 501 and the connecting rod 206 are transmission-connected through a sprocket chain. The driving bevel gear 502 is fixedly connected to one end of the transmission rod 501 close to the drive shaft 401. The driven bevel gear 503 is fixedly connected to the At one end of the driving shaft 401 close to the transmission rod 501, the driven bevel gear 503 and the driving bevel gear 502 are meshed. When the rotor drives the cooling fan 5 and the connecting rod 206 to rotate, under the transmission action of the sprocket chain, the connecting rod 206 drives the transmission rod 501 to rotate, and the transmission rod 501 drives the driving bevel gear 502 to rotate, thereby driving the driven bevel gear 503 and the driving shaft 401 to rotate, and driving the fan blades 402 to rotate to form cold wind, and the heat dissipation pipe network 102 is cooled by air, further improving the cooling effect of the cold water. A transmission box, a protective box and a protective cover are fixedly connected to the shell 1, the sprocket chain is inside the transmission box, the driving bevel gear 502 and the driven bevel gear 503 are inside the protective box, and the fan blades 402 are inside the protective cover to prevent foreign objects from causing impact damage or jamming to the sprocket chain, the driving bevel gear 502, the driven bevel gear 503 and the fan blades 402.

[0059] The working principle or use process of the multi-cooled permanent magnet synchronous variable frequency motor is as follows:

[0060] When the motor is powered on, the rotor is driven to rotate the output shaft of the motor under the action of the magnetic field, and the rotor drives the cooling fan 5 to rotate to dissipate heat from the internal components of the motor. At the same time, the heat sink 4 assists in dissipating heat from the motor.

[0061] The cooling fan 5 drives the connecting rod 206 and the reciprocating screw 202 to rotate, and drives the driving plate 203 to reciprocate inside the air supply cylinder 201, pushing the air in the air supply cylinder 201 to the inside of the return pipe 104 through the air outlet pipe 205, sending the cold water into the inside of the cooling pipe network 102, and sending the water in the cooling pipe network 102 into the inside of the cold water pipe 101;

[0062] The cold water in the cold water pipe 101 partially drips onto the surface of the shell 1 through the dripping pipe 7, cooling the shell 1 by water. The dripping cold water accumulates inside the water collecting tube 301, and enters the return water pipe 104 under the action of the pumping pipe 303, forming a cold water circulation.

[0063] The connecting rod 206 drives the transmission rod 501 to rotate, and drives the driving shaft 401 and the fan blades 402 to rotate under the action of the driving bevel gear 502 and the driven bevel gear 503, thereby assisting in cooling the heat dissipation network 102, ensuring the cooling effect of the cold water, thereby improving the cooling effect of the motor.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-cooling permanent magnet synchronous variable frequency motor, comprising a housing (1), a stator (2) and a mover (3), characterized in that: It also includes a heat sink (4), a heat dissipation fan (5), a water cooling mechanism and a driving mechanism; A plurality of heat sinks (4) are provided, and the heat sinks (4) are fixedly connected to the outside of the housing (1); The heat dissipation fan (5) and the mover (3) are coaxially fixedly connected, and an air outlet is provided on the housing (1); The water cooling mechanism is used to cool the housing (1) by water, and the water cooling mechanism comprises: A cold water pipe (101), the cold water pipe (101) passing through the plurality of heat sinks (4); a heat dissipation network (102), wherein the top of the heat dissipation network (102) is connected to the top of the cold water pipe (101) via a water supply pipe (103), and the bottom of the heat dissipation network (102) is connected to the bottom of the cold water pipe (101) via a water return pipe (104), and the heat dissipation network (102) is located outside the housing (1) and corresponds to the position of the air outlet; The driving mechanism is used to drive cold water to circulate in the cold water pipe (101) and the heat dissipation pipe network (102), and the driving mechanism comprises: An air supply cylinder (201), the air supply cylinder (201) being fixedly connected to the housing (1); a reciprocating screw (202), the reciprocating screw (202) being rotatably connected to the interior of the air supply cylinder (201), the reciprocating screw (202) being coaxially fixedly connected to the cooling fan (5) via a connecting rod (206); A driving plate (203), the driving plate (203) being sealingly slidably connected to the inside of the air supply cylinder (201), the driving plate (203) and the reciprocating screw (202) being threadedly matched; An air intake pipe (204), wherein two air intake pipes (204) are provided, and the two air intake pipes (204) are located on both sides of the air supply cylinder (201), and a one-way valve is installed on the air intake pipe (204); An air outlet pipe (205), wherein two air outlet pipes (205) are provided, and the two air outlet pipes (205) are located on both sides of the air supply cylinder (201), and a one-way valve is installed on the air outlet pipe (205), and the air outlet pipe (205) is connected to the water return pipe (104); A one-way valve is installed on the water return pipe (104), and the one-way valve is located between the connecting point between the air outlet pipe (205) and the water return pipe (104) and the cold water pipe (101).

2. A multi-cooling permanent magnet synchronous variable frequency motor according to claim 1, characterized in that: The top of the cold water pipe (101) is connected to a spray pipe (6), the spray pipe (6) is connected to a plurality of drip pipes (7), and a water hole for water to pass through is provided on the heat sink (4).

3. A multi-cooling permanent magnet synchronous variable frequency motor according to claim 2, characterized in that: Also included is a water collection assembly, the water collection assembly comprising: A water collecting cylinder (301), the water collecting cylinder (301) being fixedly connected to the outside of the housing (1); A water suction pipe (302), the water suction pipe (302) is connected to the bottom of the cold water pipe (101), and the bottom of the water suction pipe (302) is connected to a plurality of water extraction pipes (303).

4. A multi-cooling permanent magnet synchronous variable frequency motor according to claim 3, characterized in that: The heat sink (4) passes through the water collecting cylinder (301) and extends to the outside of the water collecting cylinder (301).

5. The multi-cooling permanent magnet synchronous variable frequency motor according to claim 4, characterized in that: It also includes an auxiliary heat dissipation mechanism, which is used to perform air cooling on the heat dissipation pipe network (102), and the auxiliary heat dissipation mechanism includes: A drive shaft (401), the drive shaft (401) being rotatably connected to the housing (1), and the drive shaft (401) being transmission-connected to the connecting rod (206); A fan blade (402), wherein a plurality of the fan blades (402) are provided, and the fan blades (402) are fixedly connected to the outside of the drive shaft (401), and the fan blades (402) blow air toward the heat dissipation pipe network (102).

6. The multi-cooling permanent magnet synchronous variable frequency motor according to claim 5, characterized in that: The driving shaft (401) is transmission-connected to the connecting rod (206) via a transmission assembly, wherein the transmission assembly comprises: A transmission rod (501), the transmission rod (501) being rotatably connected to the housing (1), the transmission rod (501) and the connecting rod (206) being connected via a sprocket chain transmission; A driving bevel gear (502), the driving bevel gear (502) being fixedly connected to one end of the transmission rod (501) close to the driving shaft (401); A driven bevel gear (503) is fixedly connected to one end of the drive shaft (401) close to the transmission rod (501), and the driven bevel gear (503) is meshed with the drive bevel gear (502).

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