A vacuum motor with high efficiency heat dissipation

Abstract

The present invention provides a vacuum motor with high efficiency in heat dissipation, belonging to the technical field of vacuum motors, comprising a motor housing, a stator assembly and a rotor assembly arranged inside the motor housing, wherein the stator assembly comprises a stator core for conducting magnetic flux and a winding wound on the stator core for generating a magnetic field; the vacuum motor also comprises a heat exchange assembly arranged inside the motor housing and a heat dissipation assembly arranged outside the motor housing; using such a vacuum motor with high efficiency in heat dissipation, liquid is used as a heat exchange medium, a heat exchange channel is arranged on the side of the core that generates a large amount of heat inside the vacuum motor, the heat is transferred to the liquid, and the liquid is then transported to the heat dissipation assembly outside the vacuum motor through a pipeline, the heat dissipation assembly dissipates the heat of the liquid to the outside in the form of heat radiation, reduces the temperature of the liquid, and finally a circulating pump transports the cooled liquid to the inside of the vacuum motor to form a liquid cooling circulation channel.

Description

Technical Field

[0001] The invention belongs to the technical field of vacuum motors, and more specifically relates to a vacuum motor with high-efficiency heat dissipation. Background Art

[0002] A vacuum motor is a motor that can be used in a vacuum environment. Usually, the air in a vacuum environment is thin, and there is no heat convection in this environment, only heat conduction and radiation. Therefore, it is difficult for the motor to dissipate heat in a vacuum. Therefore, this type of motor must withstand high temperatures, so various materials, coatings, lubrication, etc. must be considered from the design stage. In addition, the application link also requires that the various accessories under vacuum must ensure a low gas outflow rate to avoid affecting the vacuum environment.

[0003] Existing vacuum motors are usually made of materials with excellent heat resistance to ensure that the vacuum motors are resistant to vacuum, high temperature and low outgassing.

[0004] However, due to the difficulty of heat dissipation in a vacuum, the motor works in a high temperature environment for a long time. Although the motor structural parts made of materials with excellent heat resistance can withstand high temperatures, there are still some parts inside the motor that will be affected by high temperatures and cause performance degradation, such as softening of wires, demagnetization of permanent magnet materials, and reduced torque. Summary of the invention

[0005] Based on this, an object of the present invention is to provide a vacuum motor with high efficiency in heat dissipation, comprising a motor housing, a stator assembly and a rotor assembly arranged inside the motor housing, wherein the stator assembly comprises a stator core for conducting magnetic flux and a winding wound on the stator core for generating a magnetic field; the vacuum motor further comprises a heat exchange assembly arranged inside the motor housing and a heat dissipation assembly arranged outside the motor housing;

[0006] The heat exchange assembly includes an input pipe unit and an output pipe unit for forming a liquid circulation channel, and the heat exchange assembly also includes a heat exchange channel arranged on the side of the stator core; the input pipe unit, the heat exchange channel, and the output pipe unit are connected in sequence to form a liquid circulation channel inside the motor housing;

[0007] The heat dissipation assembly includes a circulation pump for driving the flow of liquid, a low-pressure side pipeline connecting the output pipeline unit and the circulation pump, a high-pressure side pipeline connecting the circulation pump and the input pipeline unit, and a heat dissipation device arranged on the high-pressure side pipeline; the heat dissipation device is used to reduce the temperature of the liquid in the high-pressure side pipeline;

[0008] The input pipeline unit, the heat exchange channel, the output pipeline unit, the low-pressure side pipeline, the circulation pump, and the high-pressure side pipeline are sequentially connected to form a liquid circulation system. When the vacuum motor is working, the liquid circulation system can exchange heat with the inside of the motor housing to play a role in heat dissipation.

[0009] Preferably, a plurality of stator cores are arranged in the circumferential direction of the stator assembly, and a heat exchange channel is arranged on the side of each stator core;

[0010] The input pipeline unit includes an input end annular connector with a hollow interior, a proximal connecting pipe connecting the high-pressure side channel and the input end annular connector, and an input end connecting pipe connecting the input end annular connector and the heat exchange channel; a plurality of input end connecting pipes are arranged on the input end annular connector, and the plurality of input end connecting pipes are respectively connected to the heat exchange channels of different stator cores;

[0011] The output pipe unit includes an output end ring connector with a hollow interior, a distal connecting pipe connecting the low-pressure side channel and the output end ring connector, and an output end connecting pipe connecting the output end ring connector and the heat exchange channel; a plurality of output end connecting pipes are arranged on the output end ring connector, and the plurality of output end connecting pipes are respectively connected to the heat exchange channels of different stator cores.

[0012] Preferably, two heat exchange channels are arranged on the side of each stator core, which are an input end exchange pipe and an output end exchange pipe respectively;

[0013] The input end connecting pipe is connected to the input end exchange pipe, and the output end connecting pipe is connected to the output end exchange pipe. The input end connecting pipe and the output end connecting pipe are arranged at one end of the motor housing close to the heat dissipation component, and a heat exchange elbow is also arranged at one end of the motor housing away from the heat dissipation component. The heat exchange elbow is used to connect the input end exchange pipe and the output end exchange pipe;

[0014] The proximal connecting tube, input end annular connector, input end connecting tube, input end exchange pipe, output end exchange pipe, output end connecting tube, output end annular connector and distal connecting tube are connected in sequence to form a liquid circulation channel of the heat exchange component.

[0015] Preferably, the circulation pump includes a pump housing with a hollow interior, a rotating shaft passing through the bottom of the pump housing, a rotating handle arranged inside the pump housing and connected to the rotating shaft, a spherical shell sleeved on the rotating shaft and connected to the pump housing, a swinging member sleeved on the spherical shell, a piston chamber arranged inside the pump housing, a piston body arranged in the piston chamber, a piston rod connecting the piston body and the swinging member, and a high-pressure side one-way channel and a low-pressure side one-way channel arranged at the end of the piston chamber.

[0016] Preferably, the rotating shaft is used to provide power for the circulation pump, the rotating shaft can drive the rotating handle to rotate, the swinging piece is cylindrical and can swing around the center of the ball shell; the swinging means that the center position of the swinging piece is fixed, and the edge of the swinging piece can move up and down; the piston rod is hinged to the swinging piece, and when the side of the swinging piece connected to the piston rod moves up and down, the piston rod drives the piston body to move up and down in the piston cavity, and the piston rod is hinged to the piston body;

[0017] The high-pressure side one-way channel connects the high-pressure side pipeline and the piston cavity, and the high-pressure side one-way channel is used to limit the liquid to only flow from the piston cavity to the high-pressure side pipeline in one direction; the low-pressure side one-way channel connects the low-pressure side pipeline and the piston cavity, and the low-pressure side one-way channel is used to limit the liquid to only flow from the low-pressure side pipeline to the piston cavity in one direction;

[0018] A push plate is provided on one side of the rotating handle, and the push plate is connected to the swinging piece; when the rotating handle rotates, the swinging piece swings back and forth in a circular direction, and the piston body moves back and forth in the piston cavity; when the piston body moves in a direction away from the one-way channel on the low-pressure side, the liquid in the low-pressure side pipeline flows into the piston cavity; when the piston body moves in a direction close to the one-way channel on the high-pressure side, the liquid in the piston cavity flows into the high-pressure side pipeline; when the rotating shaft rotates, the circulating pump is used to drive the liquid to flow.

[0019] Preferably, the high-pressure side one-way channel and the low-pressure side one-way channel respectively include a tapered hole provided on the pump housing, the tapered hole includes a small diameter end and a large diameter end, and a blocking ball and an elastic member that pushes the blocking ball to move toward the small diameter end of the tapered hole are provided in the tapered hole;

[0020] The small diameter end of the tapered hole of the high-pressure side one-way channel is arranged in a direction close to the piston cavity, and the small diameter end of the tapered hole of the low-pressure side one-way channel is arranged in a direction away from the piston cavity.

[0021] Preferably, the vacuum motor further comprises an output shaft connected to the rotor assembly, the output shaft being used to output the rotational force generated by the vacuum motor; the end of the output shaft close to the heat dissipation assembly passes through the motor housing, and the end of the output shaft close to the heat dissipation assembly is provided with a docking joint; the end of the rotating shaft close to the motor housing is provided with a docking hole matching the docking joint, the rotating shaft and the output shaft are connected respectively through the docking hole and the docking joint, and the output shaft can drive the rotating shaft to rotate;

[0022] A bearing is arranged inside the pump housing, and the rotating shaft is connected to the bearing; an oblique bearing is arranged at the connection part between the push plate and the swing member, and the oblique bearing is used to reduce the friction force of the connection part between the push plate and the swing member.

[0023] Preferably, the swinging member is evenly connected with a plurality of piston rods in the circumferential direction, a plurality of piston cavities are arranged at corresponding positions of the pump housing, a piston body is arranged in each of the piston cavities, and a high-pressure side one-way channel and a low-pressure side one-way channel are arranged at the end of each piston cavity; the low-pressure side one-way channel is connected to the input pipeline unit;

[0024] The pump housing is provided with a high-pressure side annular connector with a hollow interior outside, and the high-pressure side one-way channel is connected to the high-pressure side annular connector; the high-pressure side annular connector is connected to the high-pressure side pipeline.

[0025] Preferably, the heat dissipation assembly further comprises a shunt pipe connected to the circulation pump and a confluence pipe connected to the input pipe unit; the high-pressure side pipe is arranged between the shunt pipe and the confluence pipe;

[0026] A plurality of high-pressure side pipes are arranged between the diverter pipe and the converging pipe. The diverter pipe and the converging pipe are hollow inside, and the liquid inside the diverter pipe can flow into the converging pipe through the plurality of high-pressure side pipes. The heat dissipation device is a heat sink arranged on the high-pressure side pipe.

[0027] Preferably, a connector assembly is provided on the motor housing, and the connector assembly is used to connect the pipes inside the motor housing and outside the motor housing; the connector assembly includes a connector pipe, the two ends of the connector pipe are connected and include a proximal end and a distal end, the proximal end of the connector pipe is arranged inside the motor housing, and the distal end of the connector pipe is arranged outside the motor housing; the proximal end of the connector pipe is provided with a first step and a gasket, the gasket is arranged between the motor housing and the first step, and the connector pipe is provided with an external thread;

[0028] The connector pipe is provided with two nuts matching the external threads, namely a first nut and a second nut, wherein the first nut is close to the first step; the first nut and the first step respectively clamp the motor housing from the inner and outer sides of the motor housing to fix the position of the connector assembly;

[0029] The second nut is provided with an external thread in a direction close to the first nut and a cavity in a direction away from the first nut. The connector assembly also includes a butt joint tube, one end of which is provided with a second step. The second nut can be sleeved outside the butt joint tube, the second step is in the cavity, the second nut can fix the position of the butt joint tube, the tail of the butt joint tube abuts against the connector pipe from the tail of the connector pipe, and the second nut abuts against the connector pipe from the head of the connector pipe through the second step; the pipe outside the motor housing is butt jointed with the head of the butt joint tube;

[0030] A heightening column is provided between the motor housing and the heat dissipation assembly, and the heightening column is used to maintain a distance between the motor housing and the heat dissipation assembly.

[0031] According to an embodiment of the present invention, a vacuum motor with efficient heat dissipation uses liquid as a heat exchange medium. A heat exchange channel is set in the iron core that generates a large amount of heat inside the vacuum motor to transfer the heat to the liquid. The liquid is then transported to the heat dissipation component outside the vacuum motor through a pipeline. The heat dissipation component dissipates the heat of the liquid to the outside in the form of thermal radiation to reduce the liquid temperature. Finally, a circulating pump transports the cooled liquid to the inside of the vacuum motor to form a liquid cooling circulation channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present disclosure includes drawings, which should be considered to be included in and constitute a part of the specification, and together with the specification, illustrate various exemplary embodiments, features and aspects of the present disclosure, and are used to explain the principles of the present disclosure. The present invention will be more fully understood through the following detailed description in conjunction with the drawings. Among them:

[0033] Figure 1 is a schematic diagram of a vacuum motor with high heat dissipation according to an embodiment of the present invention;

[0034] Figure 2 is a schematic diagram of the rear portion of a motor housing of a vacuum motor with high heat dissipation according to an embodiment of the present invention;

[0035] Figure 3 is a schematic diagram of a vacuum motor heat exchange component with high heat dissipation according to an embodiment of the present invention;

[0036] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0037] Figure 5 is a schematic diagram of a heat exchange elbow for a vacuum motor with high efficiency heat dissipation according to an embodiment of the present invention;

[0038] Figure 6 is a cross-sectional view of a motor housing and internal structural parts of a vacuum motor with high heat dissipation according to an embodiment of the present invention;

[0039] Figure 7 is a schematic diagram of a vacuum motor heat dissipation component with high heat dissipation according to an embodiment of the present invention;

[0040] Figure 8 is a cross-sectional view of a vacuum motor heat dissipation component with high heat dissipation according to an embodiment of the present invention;

[0041] Fig. 9 yes Figure 8 A partial enlarged view of the middle A;

[0042] Fig.10 2 is a schematic diagram of the internal structure of a vacuum motor pump housing with high heat dissipation according to an embodiment of the present invention;

[0043] Fig.11 yes Fig.10 A partial enlarged view of the middle A;

[0044] Fig.12 is a schematic diagram of a vacuum motor rotating handle with high heat dissipation according to an embodiment of the present invention;

[0045] Fig.13 is an exploded view of a vacuum motor connector assembly with high heat dissipation efficiency according to an embodiment of the present invention;

[0046] Among them: motor housing 11, stator core 12, heat exchange channel 13, input exchange pipe 131, output exchange pipe 132, circulation pump 14, high pressure side pipe 15, heat dissipation device 16, low pressure side pipe 17, input end annular connector 21, proximal connecting pipe 22, input end connecting pipe 23, output end annular connector 24, output end connecting pipe 25, distal connecting pipe 26, heat exchange elbow 27, pump housing 31, limit groove 311, rotating shaft 32, rotating handle 33, spherical shell 3 4. Swinging member 35, limiting column 351, piston chamber 36, piston body 37, piston rod 38, high-pressure side one-way channel 41, low-pressure side one-way channel 42, push plate 43, counterweight 44, step 45, tapered hole 51, blocking ball 52, elastic member 53, high-pressure side annular connector 61, diverter pipe 62, converging pipe 63, connector pipe 71, first step 72, washer 73, first nut 74, second nut 75, butt joint pipe 76, second step 77, heightening column 78, injection port 79. DETAILED DESCRIPTION

[0047] The technical solution of the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0048] A vacuum motor is a motor that can be used in a vacuum environment. Usually, the air in a vacuum environment is thin, and there is no heat convection in this environment, only heat conduction and radiation. Therefore, it is difficult for the motor to dissipate heat in a vacuum. Therefore, this type of motor must withstand high temperatures, so various materials, coatings, lubrication, etc. must be considered from the design stage. In addition, the application link also requires that the various accessories under vacuum must ensure a low gas outflow rate to avoid affecting the vacuum environment.

[0049] Existing vacuum motors are usually made of materials with excellent heat resistance to ensure that the vacuum motors are resistant to vacuum, high temperature and low outgassing.

[0050] However, due to the difficulty of heat dissipation in a vacuum, the motor works in a high temperature environment for a long time. Although the motor structural parts made of materials with excellent heat resistance can withstand high temperatures, there are still some parts inside the motor that will be affected by high temperatures and cause performance degradation, such as softening of wires, demagnetization of permanent magnet materials, and reduced torque.

[0051] In order to solve the above problems, the object of the present invention is to provide a vacuum motor with high efficiency in heat dissipation, comprising a motor housing 11, a stator assembly and a rotor assembly arranged inside the motor housing 11, wherein the stator assembly comprises a stator core 12 for conducting magnetic flux and a winding wound on the stator core 12 for generating a magnetic field; the vacuum motor further comprises a heat exchange assembly arranged inside the motor housing 11 and a heat dissipation assembly arranged outside the motor housing 11;

[0052] The heat exchange assembly includes an input pipe unit and an output pipe unit for forming a liquid circulation channel, and the heat exchange assembly also includes a heat exchange channel 13 arranged on the side of the stator core 12; the input pipe unit, the heat exchange channel 13, and the output pipe unit are connected in sequence to form a liquid circulation channel inside the motor housing 11;

[0053] The heat dissipation assembly includes a circulation pump 14 for driving the flow of liquid, a low-pressure side pipeline 17 connecting the output pipeline unit and the circulation pump 14, a high-pressure side pipeline 15 connecting the circulation pump 14 and the input pipeline unit, and a heat dissipation device 16 arranged on the high-pressure side pipeline 15; the heat dissipation device 16 is used to reduce the temperature of the liquid in the high-pressure side pipeline 15;

[0054] The input pipe unit, the heat exchange channel 13, the output pipe unit, the low-pressure side pipe 17, the circulation pump 14, and the high-pressure side pipe 15 are sequentially connected to form a liquid circulation system. When the vacuum motor is working, the liquid circulation system can exchange heat with the inside of the motor housing 11 to play a role in heat dissipation.

[0055] In this embodiment, Figure 1 , Figure 2 As shown, the motor housing 11 is the outer shell of the vacuum motor. When current passes through the winding coil of the stator assembly, the coil generates a magnetic field. This magnetic field interacts with the permanent magnetic field inside the motor to generate torque, causing the rotor assembly of the motor to rotate. The rotor assembly is connected to the output shaft of the motor, and the output shaft is used to output the rotational torque outward.

[0056] The motor housing 11 is a relatively closed cylindrical housing, with a flange ring for installing a vacuum motor at the head, a joint for docking the heat dissipation component pipe at the tail, an input pipe unit connecting the joint for water inlet and the channel of the heat exchange pipe, and an output pipe unit connecting the joint for water outlet and the channel of the heat exchange pipe.

[0057] Since the parts that generate more heat during the operation of the vacuum motor are the stator core 12 and the windings wound on the stator core, in order to reduce the temperature of the vacuum motor, the heat exchange channel 13 of this embodiment is a channel arranged on both sides of the stator core 12 in a direction parallel to the axis of the motor housing 11.

[0058] The input pipe unit and the output pipe unit can be arranged on the same side. The input pipe unit and the output pipe unit of this embodiment are both arranged at the tail of the motor housing 11. This arrangement can set two heat exchange channels 13 in the stator core 12, one heat exchange channel 13 is connected to the input pipe unit at the tail, and the other heat exchange channel 13 is connected to the output pipe unit at the tail. The two heat exchange channels 13 are connected at the head through a rotating pipe to connect the two heat exchange channels 13.

[0059] In some embodiments, the input pipe unit and the output pipe unit may not be arranged on the same side. The input pipe unit is arranged at the tail inside the motor housing 11, and the output pipe unit is arranged on the side close to the head. A corresponding joint is arranged on the side close to the head of the motor housing.

[0060] In some embodiments, the connection parts between the input pipe unit, the output pipe unit and the heat exchange channel 13 are provided with measures to prevent water leakage, such as high temperature resistant waterproof glue, rubber sealing ring or welding to prevent water leakage.

[0061] The heat dissipation component is disposed outside the motor housing 11 . In this embodiment, the heat dissipation component is disposed at the rear of the motor housing 11 . In some embodiments, the heat dissipation component may also be disposed on the side of the motor housing 11 .

[0062] The circulation pump 14 is used to provide power for liquid circulation, and the circulation pump 14 can be one of a micro centrifugal water pump, a diaphragm water pump, and a gear water pump. The water inlet of the circulation pump 14 is connected to the output pipeline unit through a low-pressure side pipeline 17, and the water outlet of the circulation pump 14 is connected to the input pipeline unit through a high-pressure side pipeline 15.

[0063] In this embodiment, the heat sink 16 may be a metal heat sink, and the metal heat sink may be directly mounted on the high-pressure side pipeline 15 .

[0064] The input pipe unit, the heat exchange channel 13, the output pipe unit, the low-pressure side pipe 17, the circulation pump 14, and the high-pressure side pipe 15 are sequentially connected to form a liquid circulation system. When the vacuum motor is working, the liquid circulation system can exchange heat with the inside of the motor housing 11 to play a role in heat dissipation.

[0065] The present invention is a vacuum motor with high efficiency in heat dissipation, which uses liquid as a heat exchange medium. A heat exchange channel 13 is set in the iron core that generates a large amount of heat inside the vacuum motor to transfer the heat to the liquid. The liquid is then transported to the heat dissipation component outside the vacuum motor through a pipeline. The heat dissipation component dissipates the heat of the liquid to the outside in the form of thermal radiation to reduce the temperature of the liquid. Finally, the circulating pump 14 transports the cooled liquid to the inside of the vacuum motor to form a liquid cooling circulation channel.

[0066] Furthermore, a plurality of stator cores 12 are arranged in the circumferential direction of the stator assembly, and a heat exchange channel 13 is arranged on the side of each stator core 12;

[0067] The input pipeline unit includes an input end annular connector 21 with a hollow interior, a proximal connecting pipe 22 connecting the high-pressure side channel and the input end annular connector 21, and an input end connecting pipe 23 connecting the input end annular connector 21 and the heat exchange channel 13; the input end annular connector 21 is provided with a plurality of input end connecting pipes 23, and the plurality of input end connecting pipes 23 are respectively connected to the heat exchange channels 13 of different stator cores 12;

[0068] The output pipe unit includes an output end annular connector 24 with a hollow interior, a distal connecting tube 26 connecting the low-pressure side channel with the output end annular connector 24, and an output end connecting tube 25 connecting the output end annular connector 24 with the heat exchange channel 13; a plurality of output end connecting tubes 25 are arranged on the output end annular connector 24, and the plurality of output end connecting tubes 25 are respectively connected to the heat exchange channels 13 of different stator cores 12.

[0069] In this embodiment, Figure 3 , Figure 4 as well as Figure 6 As shown, the input end annular connector 21 is an annular pipe with a hollow interior, and the input end annular connector 21 has multiple output ports for connecting the heat exchange channels 13 on multiple stator cores 12. In this embodiment, the input port and the output port indicate the direction of liquid flow, and the cooling medium flows in from the input port and flows out from the output port. The cooling medium can be water or a liquid with a large specific heat capacity and high temperature resistance, such as silicone oil.

[0070] like Figure 6 As shown, the stator cores 12 are evenly distributed in the circumferential direction of the nail assembly, the input end annular connector 21 is arranged at the center of the tail portion inside the motor housing 11, and the input end annular connector 21 is provided with input end connecting pipes 23 at corresponding positions of a plurality of stator cores 12, and the input end connecting pipes 23 are used to connect the input end annular connector 21 and the heat exchange channel 13 on the corresponding stator core 12. The liquid in the input end annular connector 21 can flow into the heat exchange channel 13 through the input end connecting pipe 23.

[0071] Similarly, the output end annular connector 24 is used to gather the liquids flowing out of the heat exchange channels 13 on the multiple stator cores 12, and the output end annular connector 24 is provided with output end connecting pipes 25 at corresponding positions of the multiple stator cores 12, and the output end connecting pipes 25 are used to connect the output end annular connector 24 and the corresponding heat exchange channels 13 on the stator core 12. The liquid in the heat exchange channel 13 can flow into the output end annular connector 24 through the output end connecting pipes 25.

[0072] In the specific implementation process, the input end connecting pipe 23 and the output end connecting pipe 25 can be connected to the input end annular connector 21 or the output end connector or the heat exchange pipe by means of waterproof glue, snap fasteners or welding.

[0073] like Figure 3 , Figure 4 As shown, the number of the proximal connection tubes 22 on the input end annular connector 21 can be one or multiple proximal connection tubes distributed in the circumferential direction. In this embodiment, the input end annular connector 21 is provided with three proximal connection tubes 22. Correspondingly, the rear of the motor housing 11 is provided with three connectors for respectively connecting the three proximal connection tubes 22. When in use, the three connectors simultaneously input liquid into the input end annular connector 21 through the three proximal connection tubes 22, which can make the temperature distribution uniform.

[0074] Similarly, the number of the distal connection tubes 26 on the output end annular connector 24 can be one or multiple in the circumferential direction. In this embodiment, three distal connection tubes 26 are provided on the output end annular connector 24. Correspondingly, three connectors for respectively connecting the three distal connection tubes 26 are provided at the rear of the motor housing 11. When in use, the three connectors simultaneously receive the liquid output from the output end annular connector 24 through the three distal connection tubes 26, which can make the temperature distribution uniform.

[0075] Furthermore, two heat exchange channels 13 are provided on the side of each stator core 12, which are an input end exchange pipe 131 and an output end exchange pipe 132;

[0076] The input-end exchange pipe 131 and the output-end exchange pipe 132 are respectively arranged on two sides of the stator core 12 .

[0077] In some embodiments, a winding is wound on the stator core 12, a space for installing the winding is provided inside the motor housing 11, and the heat exchange channel 13 is provided in the space for installing the winding. A winding is wound on the stator core 12 in a circular shape, and the input-end exchange pipe 131 and the output-end exchange pipe 132 are respectively provided in the spaces for installing the winding on both sides of the stator core 12, and the input-end exchange pipe 131 and the output-end exchange pipe 132 are provided close to the winding, and the winding can also be cooled.

[0078] The input end connecting pipe 23 is connected to the input end exchange pipe 131, and the output end connecting pipe 25 is connected to the output end exchange pipe 132. The input end connecting pipe 23 and the output end connecting pipe 25 are arranged at one end of the motor housing 11 close to the heat dissipation component, and a heat exchange elbow 27 is also arranged at one end of the motor housing 11 away from the heat dissipation component. The heat exchange elbow 27 is used to connect the input end exchange pipe 131 and the output end exchange pipe 132;

[0079] The proximal connecting tube 22, the input end annular connector 21, the input end connecting tube 23, the input end exchange pipe 131, the output end exchange pipe 132, the output end connecting tube 25, the output end annular connector 24, and the distal connecting tube 26 are connected in sequence to form a liquid circulation channel of the heat exchange component.

[0080] like Figure 5 As shown, the heat exchange elbow 27 is used to connect the input end exchange pipe 131 and the output end exchange pipe 132.

[0081] Further, the circulation pump 14 includes a pump housing 31 with a hollow interior, a rotating shaft 32 passing through the bottom of the pump housing 31, a rotating handle 33 disposed inside the pump housing 31 and connected to the rotating shaft 32, a spherical shell 34 sleeved on the rotating shaft 32 and connected to the pump housing 31, a swinging member 35 sleeved on the spherical shell 34, a piston chamber 36 disposed inside the pump housing 31, a piston body 37 disposed in the piston chamber 36, a piston rod 38 connecting the piston body 37 and the swinging member 35, and a high-pressure side one-way channel 41 and a low-pressure side one-way channel 42 disposed at the end of the piston chamber 36;

[0082] The rotating shaft 32 is used to provide power for the circulation pump 14 to work. The rotating shaft 32 can drive the rotating handle 33 to rotate. The swinging member 35 is cylindrical and can swing around the center of the ball shell. Swinging means that the center position of the swinging member 35 is fixed, and the edge of the swinging member 35 can move up and down. The piston rod 38 is hinged to the swinging member 35. When the side of the swinging member 35 connected to the piston rod 38 moves up and down, the piston rod 38 drives the piston body 37 to move up and down in the piston cavity 36. The piston rod 38 is hinged to the piston body 37.

[0083] The high-pressure side one-way channel 41 connects the high-pressure side pipeline 15 and the piston chamber 36, and the high-pressure side one-way channel 41 is used to limit the liquid to only flow from the piston chamber 36 to the high-pressure side pipeline 15 in one direction; the low-pressure side one-way channel 42 connects the low-pressure side pipeline 17 and the piston chamber 36, and the low-pressure side one-way channel 42 is used to limit the liquid to only flow from the low-pressure side pipeline 17 to the piston chamber 36 in one direction;

[0084] A push plate 43 is provided on one side of the rotating handle 33, and the push plate 43 is connected to the swing member 35; when the rotating handle 33 rotates, the swing member 35 swings back and forth in the circumferential direction, and the piston body 37 moves back and forth in the piston cavity 36; when the piston body 37 moves in a direction away from the low-pressure side one-way channel 42, the liquid in the low-pressure side pipeline 17 flows into the piston cavity 36; when the piston body 37 moves in a direction close to the high-pressure side one-way channel 41, the liquid in the piston cavity 36 flows into the high-pressure side pipeline 15; when the rotating shaft 32 rotates, the circulating pump 14 is used to drive the liquid to flow.

[0085] This embodiment proposes a method for implementing the circulation pump 14, such as Figure 7 , Figure 8 as well as Fig.10 As shown, the pump housing 31 is the outer shell of the circulation pump 14, the rotating shaft 32 is the power source of the circulation pump 14, the rotating handle 33 is at one end of the rotating shaft 32, the spherical shell 34 is sleeved on the rotating shaft 32 and connected to the pump housing 31, and the outer shape of the connecting part of the spherical shell 34 and the swinging member 35 is a part of a sphere, which is used to limit the center of the swinging member 35 to remain stationary. The spherical shell 34 does not rotate with the rotating shaft 32.

[0086] The swinging member 35 is cylindrical and can swing around the center of the spherical shell; swinging means that the center position of the swinging member 35 is fixed, and the edge of the swinging member 35 can move up and down. When one side swings downward, the other side opposite thereto swings upward.

[0087] The piston chamber 36 is a cavity that matches the piston body 37. The piston body 37 can move axially in the piston chamber 36. There are ball heads at both ends of the piston rod 38. The connecting parts of the swinging piece 35, the piston body 37 and the piston rod 38 are provided with spherical grooves, so that the piston rod 38 can be hinged with the swinging piece 35 and the piston body 37.

[0088] The position where the push plate 43 contacts the swing member 35 is in a downward swinging state, and the side of the swing member 35 opposite to the push plate 43 is in an upward swinging state. When the rotating handle 33 rotates, the push plate 43 moves around the swing member 35, and the swing member 35 swings back and forth in a circular direction, and the piston body 37 moves back and forth in the piston chamber 36.

[0089] The high-pressure side one-way channel 41 and the low-pressure side one-way channel 42 are used to make the operation of the circulation pump 14 directional. When the piston body 37 moves upward, the low-pressure side one-way channel 42 opens, the high-pressure side one-way channel 41 closes, and the liquid in the low-pressure side pipeline 17 flows unidirectionally to the piston chamber 36; when the piston body 37 moves downward, the high-pressure side one-way channel 41 opens, the low-pressure side one-way channel 42 closes, and the liquid in the piston chamber 36 flows unidirectionally to the high-pressure side pipeline 15.

[0090] In some embodiments, Fig.10 , Fig.12 As shown, the push plate 43 is disposed at one end of the rotating handle 33, and a counterweight 44 is disposed at the other end of the rotating handle 33, and the mass of the counterweight 44 matches the mass of the push plate 43. The counterweight 44 can stabilize the rotation balance of the rotating handle 33.

[0091] In some embodiments, Fig. 9As shown, a step 45 is provided inside the high-pressure side pipe 15, and the inner diameters on both sides of the step 45 are inconsistent, and the inner diameter close to the diverter pipe 62 is larger than the inner diameter close to the converging pipe 63. The step 45 inside the high-pressure side pipe 15 can increase the pressure of the liquid in the high-pressure side pipe 15, which is beneficial to heat dissipation.

[0092] Further, the high-pressure side one-way channel 41 and the low-pressure side one-way channel 42 respectively include a tapered hole 51 provided on the pump housing 31, the tapered hole 51 includes a small diameter end and a large diameter end, and a blocking ball 52 and an elastic member 53 for pushing the blocking ball 52 to move toward the small diameter end of the tapered hole 51 are provided in the tapered hole 51;

[0093] The small diameter end of the tapered hole 51 of the high-pressure side one-way channel 41 is arranged in a direction close to the piston chamber 36 , and the small diameter end of the tapered hole 51 of the low-pressure side one-way channel 42 is arranged in a direction away from the piston chamber 36 .

[0094] This embodiment proposes a method for implementing the high-pressure side one-way channel 41 and the low-pressure side one-way channel 42, such as Fig.10 , Fig.11 As shown, the elastic member 53 of this embodiment is a spring. The elastic member 53 pushes the blocking ball 52 to fit closely against the tapered hole 51, thereby keeping the high-pressure side one-way channel 41 and the low-pressure side one-way channel 42 closed without external force.

[0095] When the piston body 37 moves upward, the air pressure inside the piston chamber 36 decreases, and the blocking ball 52 of the low-pressure side one-way channel 42 moves toward the large-diameter end, compressing the elastic member 53; and the negative pressure makes the blocking ball 52 of the high-pressure side one-way channel 41 fit more closely with the tapered hole 51, at this time, the low-pressure side one-way channel 42 is opened, and the high-pressure side one-way channel 41 is closed.

[0096] On the contrary, when the piston body 37 moves downward, the air pressure inside the piston chamber 36 increases, and the blocking ball 52 of the high-pressure side one-way channel 41 moves toward the large diameter end, compressing the elastic member 53; and the positive pressure makes the blocking ball 52 of the low-pressure side one-way channel 42 fit more closely with the tapered hole 51, at this time, the high-pressure side one-way channel 41 is opened, and the low-pressure side one-way channel 42 is closed.

[0097] Further, the vacuum motor also includes an output shaft connected to the rotor assembly, and the output shaft is used to output the rotational force generated by the vacuum motor; the end of the output shaft close to the heat dissipation assembly passes through the motor housing 11, and the end of the output shaft close to the heat dissipation assembly is provided with a docking joint; the end of the rotating shaft 32 close to the motor housing 11 is provided with a docking hole matching the docking joint, and the rotating shaft 32 is connected to the output shaft through the docking hole and the docking joint respectively, and the output shaft can drive the rotating shaft 32 to rotate;

[0098] A bearing is disposed inside the pump housing 31 , and the rotating shaft 32 is connected to the bearing; an oblique bearing is disposed at the connection between the push plate 43 and the swing member 35 , and the oblique bearing is used to reduce the friction force at the connection between the push plate 43 and the swing member 35 .

[0099] In this embodiment, the power of the circulating pump 14 comes from the output shaft of the vacuum motor, and the vacuum motor automatically drives the circulating pump 14 when it is working. The bearing is used to balance and support the rotating shaft 32 when it is working.

[0100] Furthermore, the swing member 35 is evenly connected with a plurality of piston rods 38 in the circumferential direction, and a plurality of piston chambers 36 are provided at corresponding positions of the pump housing 31, and a piston body 37 is provided in each of the piston chambers 36, and a high-pressure side one-way channel 41 and a low-pressure side one-way channel 42 are provided at the end of each piston chamber 36; the low-pressure side one-way channel 42 is connected to the input pipeline unit;

[0101] The pump housing 31 is provided with a high-pressure side annular connector 61 with a hollow interior outside, and the high-pressure side one-way channel 41 is connected to the high-pressure side annular connector 61 ; the high-pressure side annular connector 61 is connected to the high-pressure side pipeline 15 .

[0102] In this embodiment, a plurality of piston rods 38 are evenly connected to the circumferential direction of the swing member 35, a plurality of piston chambers 36 are arranged at corresponding positions of the pump housing 31, the push plate 43 moves around the swing member 35, and the plurality of piston rods 38 push the plurality of piston bodies 37 to move back and forth in the corresponding piston chambers 36. The circulation pump 14 can continuously extract and discharge liquid, and the liquid circulation system can smoothly circulate the liquid.

[0103] Furthermore, the heat dissipation assembly further includes a shunt pipe 62 connected to the circulation pump 14 and a confluence pipe 63 connected to the input pipe unit; the high-pressure side pipe 15 is arranged between the shunt pipe 62 and the confluence pipe 63;

[0104] A plurality of high-pressure side pipes 15 are arranged between the diverter pipe 62 and the converging pipe 63. The diverter pipe 62 and the converging pipe 63 are hollow inside, and the liquid inside the diverter pipe 62 can flow into the converging pipe 63 through the plurality of high-pressure side pipes 15. The heat dissipation device 16 is a heat sink arranged on the high-pressure side pipe 15.

[0105] In this embodiment, Fig.10 As shown, the heat dissipation assembly includes a plurality of high-pressure side pipes 15, and each high-pressure side pipe 15 is provided with a heat dissipation device 16 to improve the efficiency of heat dissipation. The shunt pipe 62 is used to connect the input ends of the plurality of high-pressure side pipes 15 to evenly shunt the liquid into the plurality of high-pressure side pipes 15.

[0106] The confluence pipe 63 is used to connect the output ends of the plurality of high-pressure side pipes 15 to merge the liquids in the plurality of high-pressure side pipes 15 .

[0107] Further, the motor housing 11 is provided with a connector assembly, and the connector assembly is used to connect the pipes inside the motor housing 11 and outside the motor housing 11; the connector assembly includes a connector pipe 71, and the connector pipe 71 has two ends connected and includes a proximal end and a distal end, the proximal end of the connector pipe 71 is arranged inside the motor housing 11, and the distal end of the connector pipe 71 is arranged outside the motor housing 11; the proximal end of the connector pipe 71 is provided with a first step 72 and a gasket 73, the gasket 73 is arranged between the motor housing 11 and the first step 72, and the connector pipe 71 is provided with an external thread;

[0108] The connector pipe 71 is provided with two nuts matching the external threads, namely a first nut 74 and a second nut 75, wherein the first nut 74 is close to the first step 72; the first nut 74 and the first step 72 respectively clamp the motor housing 11 from both inside and outside of the motor housing 11 to fix the position of the connector assembly;

[0109] The second nut 75 is provided with an external thread in a direction close to the first nut 74 and a cavity in a direction away from the first nut 74. The connector assembly further includes a butt joint pipe 76. A second step 77 is provided at one end of the butt joint pipe 76. The second nut 75 can be sleeved outside the butt joint pipe 76. The second step 77 is in the cavity. The second nut 75 can fix the position of the butt joint pipe 76. The tail of the butt joint pipe 76 abuts against the connector pipe 71 from the tail of the connector pipe 71. The second nut 75 abuts against the connector pipe 71 from the head of the connector pipe 71 through the second step 77. The pipe outside the motor housing 11 is butt jointed with the head of the butt joint pipe 76.

[0110] A heightening column 78 is provided between the motor housing 11 and the heat dissipation assembly, and the heightening column 78 is used to maintain a distance between the motor housing 11 and the heat dissipation assembly.

[0111] In this embodiment, Fig.13 As shown, the connector assembly is used as a joint to connect the pipes inside and outside the motor housing 11; the first nut 74 and the first step 72 clamp the motor housing 11 from the inside and outside of the motor housing 11 respectively to fix the position of the connector assembly; the second nut 75 can fix the position of the butt joint 76, the tail of the butt joint 76 presses against the connector pipe 71 from the tail of the connector pipe 71, and the second nut 75 presses against the connector pipe 71 from the head of the connector pipe 71 through the second step 77; the pipe outside the motor housing 11 is docked with the head of the butt joint 76.

[0112] In some embodiments, the outer sides of the high-pressure side pipeline 15, the heat dissipation device 16, the diverter pipe 62, and the converging pipe 63 are covered with a thermal radiation film, which may be an aluminum film. The thermal radiation film is conducive to heat dissipation using the thermal radiation effect in a vacuum environment.

[0113] In some embodiments, a liquid injection port 79 is provided on the shunt tube 62, and the liquid injection port 79 is used to inject liquid into the liquid circulation system.

[0114] In some embodiments, the number of high-pressure side pipelines 15 can be one or more. In this embodiment, the number of high-pressure side pipelines 15 is three, and the three high-pressure side pipelines 15 are respectively connected to the three proximal connecting pipes 22.

[0115] Similarly, the number of the low-pressure side pipelines 17 can be one or more. In this embodiment, the number of the low-pressure side pipelines 17 is three, and the three low-pressure side pipelines 17 are respectively connected to the three remote connecting pipes 26.

[0116] In some embodiments, Fig.12 As shown, a limiting column 351 is provided on the outer side of the swing member 35, and a limiting groove 311 is provided at a corresponding position on the inner wall of the pump housing 31. The length direction of the limiting groove 311 is parallel to the axial direction of the pump housing 31. The limiting column 351 can only move in the limiting groove 311, thereby limiting the swing member 35 to only swing but not rotate at a large angle.

[0117] The width of the limiting groove 351 is slightly larger than the diameter of the limiting post 351 to prevent excessive friction between the limiting post 351 and the limiting groove 311 .

[0118] The various embodiments disclosed in the present invention have been described above. The above description is exemplary and not exhaustive, and the scope of the present invention is not limited to the above embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the spirit and scope of the present invention. In other words, those of ordinary skill in the art can make various changes and improvements to the present invention in form and detail, and these are considered to fall within the scope of protection of the present invention. The choice of terms used herein is intended to best explain the principles of the various embodiments, practical applications, or improvements to the technology in the market, or to enable those of ordinary skill in the art to understand the various embodiments disclosed herein.

Claims

1. A vacuum motor with high heat dissipation efficiency, comprising a motor housing (11), a stator assembly and a rotor assembly arranged inside the motor housing (11), wherein the stator assembly comprises a stator core (12) for conducting magnetic flux and a winding wound on the stator core (12) for generating a magnetic field; characterized in that: The vacuum motor further comprises a heat exchange component arranged inside the motor housing (11) and a heat dissipation component arranged outside the motor housing (11); The heat exchange assembly comprises an input pipe unit and an output pipe unit for forming a liquid circulation channel, and the heat exchange assembly further comprises a heat exchange channel (13) arranged on the side of the stator core (12); the input pipe unit, the heat exchange channel (13), and the output pipe unit are sequentially connected to form a liquid circulation channel inside the motor housing (11); The heat dissipation assembly comprises a circulation pump (14) for driving the flow of liquid, a low-pressure side pipeline (17) connecting the output pipeline unit and the circulation pump (14), a high-pressure side pipeline (15) connecting the circulation pump (14) and the input pipeline unit, and a heat dissipation device (16) arranged on the high-pressure side pipeline (15); the heat dissipation device (16) is used to reduce the temperature of the liquid in the high-pressure side pipeline (15); The input pipeline unit, the heat exchange channel (13), the output pipeline unit, the low-pressure side pipeline (17), the circulation pump (14), and the high-pressure side pipeline (15) are sequentially connected to form a liquid circulation system. When the vacuum motor is working, the liquid circulation system can exchange heat with the inside of the motor housing (11) to achieve heat dissipation. A plurality of stator cores (12) are arranged in the circumferential direction of the stator assembly, and a heat exchange channel (13) is arranged on the side surface of each stator core (12); The input pipeline unit comprises an input end annular connector (21) with a hollow interior, a proximal connecting pipe (22) connecting the high-pressure side channel and the input end annular connector (21), and an input end connecting pipe (23) connecting the input end annular connector (21) and the heat exchange channel (13); a plurality of input end connecting pipes (23) are provided on the input end annular connector (21), and the plurality of input end connecting pipes (23) are respectively connected to the heat exchange channels (13) of different stator cores (12); The output pipe unit comprises an output end annular connector (24) with a hollow interior, a distal connection pipe (26) connecting the low-pressure side channel and the output end annular connector (24), and an output end connection pipe (25) connecting the output end annular connector (24) and the heat exchange channel (13); a plurality of output end connection pipes (25) are provided on the output end annular connector (24), and the plurality of output end connection pipes (25) are respectively connected to the heat exchange channels (13) of different stator cores (12).

2. The vacuum motor with high heat dissipation efficiency according to claim 1, characterized in that: Two heat exchange channels (13) are arranged on the side of each stator core (12), which are an input end exchange pipe (131) and an output end exchange pipe (132); The input-end connecting pipe (23) is connected to the input-end exchange pipe (131), and the output-end connecting pipe (25) is connected to the output-end exchange pipe (132); the input-end connecting pipe (23) and the output-end connecting pipe (25) are arranged at one end of the motor housing (11) close to the heat dissipation component; a heat exchange elbow (27) is also arranged at one end of the motor housing (11) away from the heat dissipation component; the heat exchange elbow (27) is used to connect the input-end exchange pipe (131) and the output-end exchange pipe (132); The proximal connecting tube (22), the input end annular connector (21), the input end connecting tube (23), the input end exchange pipe (131), the output end exchange pipe (132), the output end connecting tube (25), the output end annular connector (24), and the distal connecting tube (26) are connected in sequence to form a liquid circulation channel of the heat exchange component.

3. The vacuum motor with high heat dissipation efficiency according to claim 1, characterized in that: The circulation pump (14) comprises a pump housing (31) with a hollow interior, a rotating shaft (32) passing through the bottom of the pump housing (31), a rotating handle (33) arranged inside the pump housing (31) and connected to the rotating shaft (32), a spherical shell (34) sleeved on the rotating shaft (32) and connected to the pump housing (31), a swinging member (35) sleeved on the spherical shell (34), a piston chamber (36) arranged inside the pump housing (31), a piston body (37) arranged in the piston chamber (36), a piston rod (38) connecting the piston body (37) and the swinging member (35), and a high-pressure side one-way channel (41) and a low-pressure side one-way channel (42) arranged at the end of the piston chamber (36).

4. The vacuum motor with high heat dissipation efficiency according to claim 3, characterized in that: The rotating shaft (32) is used to provide power for the circulation pump (14) to work. The rotating shaft (32) can drive the rotating handle (33) to rotate. The swinging member (35) is cylindrical and can swing around the center of the ball shell. Swinging means that the center position of the swinging member (35) is fixed, and the edge of the swinging member (35) can move up and down. The piston rod (38) is hinged to the swinging member (35). When the side of the swinging member (35) connected to the piston rod (38) moves up and down, the piston rod (38) drives the piston body (37) to move up and down in the piston cavity (36). The piston rod (38) is hinged to the piston body (37). The high-pressure side one-way channel (41) connects the high-pressure side pipeline (15) and the piston chamber (36), and the high-pressure side one-way channel (41) is used to restrict the liquid to flow only in one direction from the piston chamber (36) to the high-pressure side pipeline (15); the low-pressure side one-way channel (42) connects the low-pressure side pipeline (17) and the piston chamber (36), and the low-pressure side one-way channel (42) is used to restrict the liquid to flow only in one direction from the low-pressure side pipeline (17) to the piston chamber (36); A push plate (43) is provided on one side of the rotating handle (33), and the push plate (43) is connected to the swing member (35); when the rotating handle (33) rotates, the swing member (35) swings back and forth in a circumferential direction, and the piston body (37) moves back and forth in the piston chamber (36); when the piston body (37) moves in a direction away from the low-pressure side one-way channel (42), the liquid in the low-pressure side pipeline (17) flows into the piston chamber (36); when the piston body (37) moves in a direction close to the high-pressure side one-way channel (41), the liquid in the piston chamber (36) flows into the high-pressure side pipeline (15); when the rotating shaft (32) rotates, the circulating pump (14) is used to drive the liquid to flow.

5. The vacuum motor with high heat dissipation efficiency according to claim 4, characterized in that: The high-pressure side one-way passage (41) and the low-pressure side one-way passage (42) respectively comprise a tapered hole (51) arranged on the pump housing (31), the tapered hole (51) comprising a small diameter end and a large diameter end, a blocking ball (52) and an elastic member (53) for pushing the blocking ball (52) to move toward the small diameter end of the tapered hole (51) are arranged in the tapered hole (51); The small diameter end of the tapered hole (51) of the high-pressure side one-way channel (41) is arranged in a direction close to the piston chamber (36), and the small diameter end of the tapered hole (51) of the low-pressure side one-way channel (42) is arranged in a direction away from the piston chamber (36).

6. The vacuum motor with high heat dissipation efficiency according to claim 4, characterized in that: The vacuum motor further comprises an output shaft connected to the rotor assembly, the output shaft being used to output the rotational force generated by the vacuum motor; the end of the output shaft close to the heat dissipation assembly passes through the motor housing (11), and the end of the output shaft close to the heat dissipation assembly is provided with a docking joint; the end of the rotating shaft (32) close to the motor housing (11) is provided with a docking hole matching the docking joint, the rotating shaft (32) and the output shaft are connected via the docking hole and the docking joint respectively, and the output shaft can drive the rotating shaft (32) to rotate; A bearing is provided inside the pump housing (31), and the rotating shaft (32) is connected to the bearing; an oblique bearing is provided at the connection between the push plate (43) and the swing member (35), and the oblique bearing is used to reduce the friction force at the connection between the push plate (43) and the swing member (35).

7. The vacuum motor with high heat dissipation efficiency according to claim 4, characterized in that: The swing member (35) is evenly connected to a plurality of piston rods (38) in a circumferential direction; a plurality of piston chambers (36) are provided at corresponding positions of the pump housing (31); a piston body (37) is provided in each of the piston chambers (36); and a high-pressure side one-way channel (41) and a low-pressure side one-way channel (42) are provided at the end of each piston chamber (36); the low-pressure side one-way channel (42) is connected to the input pipeline unit; The pump housing (31) is provided with a high-pressure side annular connector (61) with a hollow interior outside, and the high-pressure side one-way channel (41) is connected to the high-pressure side annular connector (61); the high-pressure side annular connector (61) is connected to the high-pressure side pipeline (15).

8. The vacuum motor with high heat dissipation efficiency according to claim 4, characterized in that: The heat dissipation assembly further comprises a flow dividing pipe (62) connected to the circulation pump (14) and a flow converging pipe (63) connected to the input pipe unit; the high-pressure side pipe (15) is arranged between the flow dividing pipe (62) and the flow converging pipe (63); A plurality of high-pressure side pipes (15) are arranged between the diverter pipe (62) and the converging pipe (63); the diverter pipe (62) and the converging pipe (63) are hollow inside, and liquid inside the diverter pipe (62) can flow into the converging pipe (63) through the plurality of high-pressure side pipes (15); and the heat dissipation device (16) is a heat sink arranged on the high-pressure side pipe (15).

9. The vacuum motor with high heat dissipation efficiency according to claim 1, characterized in that: The motor housing (11) is provided with a connector assembly, the connector assembly being used to connect pipes inside the motor housing (11) and outside the motor housing (11); the connector assembly comprises a connector pipe (71), the connector pipe (71) having two ends connected and comprising a proximal end and a distal end, the proximal end of the connector pipe (71) being arranged inside the motor housing (11), and the distal end of the connector pipe (71) being arranged outside the motor housing (11); the proximal end of the connector pipe (71) is provided with a first step (72) and a gasket (73), the gasket (73) being arranged between the motor housing (11) and the first step (72), and the connector pipe (71) is provided with an external thread; The connector pipe (71) is provided with two nuts matching the external threads, namely a first nut (74) and a second nut (75), the first nut (74) being close to the first step (72); the first nut (74) and the first step (72) respectively clamp the motor housing (11) from both the inner and outer sides of the motor housing (11) to fix the position of the connector assembly; The second nut (75) is provided with an external thread in a direction close to the first nut (74), and is provided with a cavity in a direction away from the first nut (74). The connector assembly further comprises a butt joint tube (76), one end of which is provided with a second step (77). The second nut (75) can be sleeved outside the butt joint tube (76), and the second step (77) is in the cavity. The second nut (75) can fix the position of the butt joint tube (76). The tail of the butt joint tube (76) abuts against the connector tube (71) from the tail of the connector tube (71), and the second nut (75) abuts against the connector tube (71) from the head of the connector tube (71) through the second step (77); the tube outside the motor housing (11) is butt jointed with the head of the butt joint tube (76); A heightening column (78) is provided between the motor housing (11) and the heat dissipation assembly, and the heightening column (78) is used to maintain a distance between the motor housing (11) and the heat dissipation assembly.

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