Motor with rotor heat dissipation structure

Abstract

The invention relates to the technical field of motors, in particular to a motor with a rotor heat dissipation structure, and aims to solve the technical problems of effective heat dissipation of a rotor of the motor and guarantee that the heat dissipation structure does not affect the maintenance and use performance of the rotor, a main shaft and a connecting piece thereof. The independent water circulation heat dissipation mechanisms are installed on the rotor and the main shaft, the heat dissipation water pump is used for pumping water into the heat dissipation pipe set in the rotor and the front coil pipe and the rear coil pipe on the front silicon steel base and the rear silicon steel base, heat generated by the rotor and the main shaft is absorbed, the whole water cooling circulation is independent of the main shaft and the rotor, all cooling pieces can be replaced, and the cooling efficiency is improved. The installation is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a motor with a rotor heat dissipation structure. Background Art

[0002] The motor is a key device for realizing the conversion of mechanical energy into electrical energy. With the continuous development and innovation of science and technology, the motor is gradually developing towards high energy density, high power density, high speed, high frequency and high capacity. However, with the continuous increase of motor capacity and the continuous improvement of working power, the temperature rise of various working parts inside the motor is too high, and the serious lack of heat dissipation efficiency of the motor will lead to problems such as high temperature failure of internal insulation materials and irreversible demagnetization of materials. During the operation of the motor, its rotor will generate a lot of heat. If the rotor is not cooled in time, the high temperature during the rotation of the rotor will be transferred to the bearing, resulting in problems such as increased bearing temperature, failure of lubricating grease, and change in bearing clearance.

[0003] In the Chinese patent application number CN2024111967445, the patent name is: A motor with a rotor heat dissipation structure and its installation method, which discloses a motor with a rotor heat dissipation structure, including a casing, and a stacked rotor installed on the inner side of the casing, the inner side of the stacked rotor is provided with a rotating shaft, the two ends of the stacked rotor are respectively provided with a first silicon steel seat and a second silicon steel seat located on the outer side of the rotating shaft, and the end surface of the stacked rotor is provided with a heat dissipation hole; by arranging the first silicon steel seat and the second silicon steel seat at both ends of the stacked rotor, and arranging a heat dissipation pipe, a circulation pipe and the like therein, The cavity and other structures, together with the water supply channel and return channel in the shaft, form a complete water-cooling circulation system. This technical solution of using water cooling to dissipate heat for the motor rotor requires processing the shaft to open two pipe holes for water supply and return, which affects the various performances of the shaft. Once the water channel on the shaft is blocked or the shaft is damaged, it will affect the heat dissipation of the rotor. During maintenance, the disassembly of the shaft and rotor may affect the assembly of the heat dissipation structure. The replaceability of each heat dissipation structure is not high. If the silicon steel seat and the shaft are damaged, it will affect the integrity of the water-cooling circulation system.

[0004] Therefore, the present invention provides a motor with an independently replaceable rotor heat dissipation structure, and the rotor heat dissipation structure of the present invention will not be specifically affected by the maintenance and replacement of the shaft and the rotor. Summary of the Invention

[0005] To solve the above technical problems.

[0006] The present application provides a motor with a rotor heat dissipation structure, including a motor housing, a main shaft and a reducer, and also includes: a rotor and a heat dissipation mechanism are installed in the motor housing, the rotor and the heat dissipation mechanism are both installed on the main shaft, a heat dissipation water pump is provided on the outside of the motor housing, the heat dissipation water pump is connected to the heat dissipation mechanism through a pipeline, a front silicon steel seat and a rear silicon steel seat are provided at both ends of the rotor, the heat dissipation mechanism includes a heat dissipation pipe group, a front coil and a rear coil and a circulation pipe group, the front coil and the rear coil are respectively installed on the front silicon steel seat and the rear silicon steel seat, the heat dissipation pipe group is inserted in the rotor and the two ends are respectively connected to the front coil and the rear coil, the circulation pipe group is connected to the front coil, and the heat dissipation water pump pumps water to the front coil, the rear coil and the heat dissipation pipe group through the circulation pipe group to dissipate heat.

[0007] Furthermore, in order to accelerate the heat dissipation of the rotor, the heat dissipation pipe group includes: a water inlet pipe, a water outlet pipe and a ventilation pipe. The water inlet pipe is arranged outside the water outlet pipe, and the water outlet pipe is arranged outside the ventilation pipe. A water inlet channel is formed between the water inlet pipe and the water outlet pipe, and a water outlet channel is formed between the water outlet pipe and the ventilation pipe. The ventilation pipe is hollow to form an inner tube ventilation channel. The two ends of the water inlet pipe, the water outlet pipe and the ventilation pipe are respectively sealed and connected with the corresponding front coil and rear coil.

[0008] Furthermore, in order to be able to pump cooling water smoothly into the heat dissipation tube group, the front coil is installed on the front silicon steel seat through the front tube groove, and the front tube groove is opened on the front silicon steel seat. An inlet channel and a drainage channel are provided in the front coil. The inlet channel is connected to the inlet pipe and the outlet pipe to form an inlet channel, and the drainage channel is connected to the outlet pipe and the ventilation pipe to form an outlet channel.

[0009] Furthermore, a plurality of connection ports for communicating with the heat dissipation tube group are provided on one side of the front coil close to the heat dissipation tube group, and a plurality of water inlet pipes and water outlet pipes are provided on the other side of the front coil for water inlet and water outlet. The water inlet pipe is connected to the water inlet pipe and the water outlet pipe through the water inlet flow channel in the front coil to form a water inlet channel, and the drain pipe is connected to the water outlet pipe and the ventilation pipe through the drainage flow channel in the front coil to form a water outlet channel. Each of the water inlet pipes and drain pipes is connected to the circulation pipe group.

[0010] Furthermore, in order to solve the technical problem of the mutual communication between the water inlet channel and the water outlet channel, the rear coil is installed on the rear silicon steel seat through the rear pipe groove, and the rear pipe groove is opened on the rear silicon steel seat. The rear coil is also provided with an inlet flow channel and a drainage flow channel. The water inlet flow channel and the drainage flow channel of the rear coil are connected, and the water inlet flow channel is connected to the water inlet pipe and the water outlet pipe to form an inlet channel, and the drainage flow channel is connected to the water outlet pipe and the ventilation pipe to form an outlet channel.

[0011] Furthermore, the circulation pipe group includes a circulation inner pipe and a circulation outer pipe. The circulation inner pipe is installed on the main shaft through a bearing and is connected to the front silicon steel seat and the front coil. The circulation inner pipe is connected to the water inlet pipe and the drain pipe of the front coil. The circulation outer pipe sealing sleeve is provided on the circulation inner pipe and is connected thereto.

[0012] Furthermore, in order to solve the technical problem of cooling water entering and exiting the front coil, the heat dissipation tube group and the rear coil, the circulating inner pipe includes an inner water inlet trough and an inner water outlet trough. The inner water inlet trough is located on the outside of the inner water outlet trough. The inner water inlet trough is sealed and connected to each water inlet pipe of the front coil. The inner water outlet trough is sealed and connected to each drain pipe of the front coil. The inner water inlet trough is connected to the circulating outer pipe through multiple water inlet troughs, and the inner water outlet trough is connected to the circulating outer pipe through multiple water outlet troughs.

[0013] Furthermore, the circulating outer pipe includes an outer water inlet trough and an outer water outlet trough. The outer water inlet trough is located outside the outer water outlet trough. The outer water inlet trough is connected to the inner water inlet trough of the circulating inner pipe through an water inlet ring channel. The outer water outlet trough is connected to the inner water outlet trough through an outlet ring channel. The outer water inlet trough and the outer water outlet trough are connected to the cooling water pump through a pipeline.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In order to solve the technical problem of effectively dissipating heat from the rotor of the motor and ensuring that the heat dissipation structure does not affect the maintenance and performance of the rotor, main shaft and their connecting parts, the present invention installs an independent water circulation heat dissipation mechanism on the rotor and main shaft, and uses a heat dissipation water pump to pump water to the heat dissipation pipe group in the rotor, the front coil and the rear coil on the front silicon steel seat and the rear silicon steel seat to absorb the heat generated by the rotor and main shaft. The entire water cooling cycle is independent of the main shaft and rotor, and each cooling part is replaceable for easy installation.

[0016] 2. This application completes the circulation of cooling water during the circulation heat dissipation process through the cooperation of the circulation outer tube and the circulation inner tube, and uses the circulation inner tube to replace the water supply and return channels on the main shaft, thereby ensuring the main performance of the main shaft, and realizing the detachable and replaceable cooling structures of each cooling water circulation structure, thereby improving the service life and cooling effect of basic components such as the motor rotor and the main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the three-dimensional structure of the present invention Figure 1 ;

[0018] Figure 2 Schematic diagram of the three-dimensional structure of the present invention Figure 2 ;

[0019] Figure 3 Schematic diagram of the three-dimensional structure of the present invention Figure 3 ;

[0020] Figure 4 Schematic diagram of the three-dimensional structure of the present invention Figure 4 ;

[0021] Figure 5 Decomposition of the present invention Figure 1 ;

[0022] Figure 6 Decomposition of the present invention Figure 2 ;

[0023] Figure 7 Decomposition of the present invention Figure 3 ;

[0024] Figure 8 A half-section view of the present invention;

[0025] Figure 9 It is an enlarged view of the cross-section of the circulation tube group of the present invention;

[0026] Figure 10 is a perspective view of the front coil of the present invention;

[0027] Figure 11 is a perspective view of the rear coil of the present invention;

[0028] Figure 12 This is the cooling water flow diagram of the present invention;

[0029] The numbers in the figure are: 1-motor housing; 2-main shaft; 3-reducer; 4-rotor; 41-front silicon steel seat; 411-front pipe groove; 42-rear silicon steel seat; 421-rear pipe groove; 5-heat dissipation mechanism; 6-heat dissipation water pump; 51-heat dissipation pipe group; 511-water inlet pipe; 512-water outlet pipe; 513-ventilation pipe; c-ventilation duct; a-water inlet channel; b-water outlet channel; 52-front coil; 521-connection port; 522- Inlet pipe; 523-drainage pipe; A-water inlet channel; B-drainage channel; 53-rear coil; 54-circulation pipe group; 541-circulation inner pipe; 5411-inner water inlet trough; 5412-inner water outlet trough; 5413-water inlet trough outlet; 5414-water outlet trough outlet; 542-circulation outer pipe; 5421-outer water inlet trough; 5422-outer water outlet trough; 5423-water inlet ring channel; 5424-water outlet ring channel; 55-bearing. DETAILED DESCRIPTION

[0030] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0031] like Figures 1 to 3 As shown, the following preferred technical solutions are provided:

[0032] A motor with a rotor 4 heat dissipation structure includes a motor housing 1, a main shaft 2 and a reducer 3. The rotor 4 and the heat dissipation mechanism 5 are installed in the motor housing 1. The rotor 4 and the heat dissipation mechanism 5 are both installed on the main shaft 2. A cooling water pump 6 is provided on the outside of the motor housing 1. The cooling water pump 6 is connected to the cooling mechanism 5 through a pipeline. The two ends of the rotor 4 are respectively provided with a front silicon steel seat 41 and a rear silicon steel seat 42. The cooling mechanism 5 includes a cooling pipe group 51, a front coil 52, a rear coil 53 and a circulation pipe group 54. The front coil 52 and the rear coil 53 are respectively installed on the front silicon steel seat 41 and the rear silicon steel seat 42. The cooling pipe group 51 is inserted in the rotor 4 and the two ends are respectively connected to the front coil 52 and the rear coil 53. The circulation pipe group 54 is connected to the front coil 52. The cooling water pump 6 pumps water to the front coil 52, the rear coil 53 and the cooling pipe group 51 through the circulation pipe group 54 to dissipate heat.

[0033] Specifically, in order to solve the technical problem of effectively dissipating the heat of the rotor 4 of the motor and ensuring that the heat dissipation structure does not affect the maintenance and performance of the rotor 4, the main shaft 2 and their connecting parts, the present invention installs an independent water circulation heat dissipation mechanism 5 on the rotor 4 and the main shaft 2, and uses a heat dissipation water pump 6 to pump water to the heat dissipation pipe group 51 in the rotor 4, the front coil 52 and the rear coil 53 on the front silicon steel seat 41 and the rear silicon steel seat 42 to absorb the heat generated by the rotor 4 and the main shaft 2. The entire water cooling cycle is independent of the main shaft 2 and the rotor 4, and each cooling component is replaceable, which is easy to install.

[0034] like Figures 3 to 5 As shown, the following preferred technical solutions are provided:

[0035] Specifically, to accelerate heat dissipation from the rotor 4, the present invention dissipates heat from the rotor 4 by installing multiple heat dissipation pipe groups 51 within the rotor 4. The heat dissipated by the rotor 4 is absorbed by forming a water inlet channel a between the water inlet pipe 511 and the water outlet pipe 512. Cooling water pumped in by the heat dissipation water pump 6 passes through the front coil 52 and enters the rear coil 53 through the water inlet channel a. From the rear coil 53, the water enters the water outlet channel b formed between the water outlet pipe 512 and the ventilation pipe 513, where it is pumped out by the heat dissipation water pump 6. This process effectively cools the front silicon steel base 41, the rotor 4, and the rear silicon steel base 42. The ventilation channel c formed by the ventilation pipe 513 accelerates the heat dissipation of the cooling water in the water outlet channel b.

[0036] like Figures 3 to 5 as well as Figure 10 、 11 As shown, the following preferred technical solutions are provided:

[0037] The front coil 52 is installed on the front silicon steel seat 41 through the front pipe groove 411. The front pipe groove 411 is opened on the front silicon steel seat 41. An inlet channel A and a drainage channel B are provided in the front coil 52. The inlet channel A is connected to the inlet pipe 511 and the outlet pipe 512 to form an inlet channel a, and the drainage channel B is connected to the outlet pipe 512 and the ventilation pipe 513 to form an outlet channel b.

[0038] A plurality of connection ports 521 for communicating with the heat dissipation tube group 51 are provided on one side of the front coil 52 close to the heat dissipation tube group 51, and a plurality of water inlet pipes 522 and water outlet pipes 523 for water inlet and water outlet are provided on the other side of the front coil 52. The water inlet pipes 522 are connected to the water inlet pipe 511 and the water outlet pipe 512 through the water inlet flow channel A in the front coil 52 to form a water inlet channel a, and the water outlet pipe 523 is connected to the water outlet channel b between the water outlet pipe 512 and the ventilation pipe 513 through the drainage flow channel B in the front coil 52. Each of the water inlet pipes 522 and the water outlet pipes 523 are connected to the circulation pipe group 54.

[0039] Specifically, in order to be able to pump the cooling water smoothly into the heat dissipation pipe group 51, the present invention pumps the cooling water into the front coil 52 through the circulation pipe group 54 and the water inlet pipe 522 through the heat dissipation water pump 6. The cooling water flows in the water inlet channel A in the front coil 52 to absorb the heat of the front silicon steel seat 41, and then flows into the water inlet channel A and the water inlet pipe 511 and the water outlet pipe 512 to form the water inlet channel a to absorb the heat of the rotor 4, and then flows through the rear coil 53 to absorb the heat of the rear silicon steel seat 42, and is discharged through the water outlet channel b formed between the drainage channel B and the water outlet pipe 512 and the ventilation pipe 513. The cooling water that has absorbed the heat is then pumped out to the heat dissipation water pump 6 through the drainage pipe 523 of the front coil 52 and the circulation pipe group 54.

[0040] like Figure 4 and 5 As shown, the following preferred technical solutions are provided:

[0041] The rear coil 53 is installed on the rear silicon steel seat 42 through the rear pipe groove 421. The rear pipe groove 421 is opened on the rear silicon steel seat 42. The rear coil 53 is also provided with an inlet channel A and a drainage channel B. The inlet channel A and the drainage channel B of the rear coil 53 are connected. The inlet channel A is connected to the inlet pipe 511 and the outlet pipe 512 to form an inlet channel a, and the drainage channel B is connected to the outlet pipe 512 and the ventilation pipe 513 to form an outlet channel b.

[0042] Specifically, in order to solve the technical problem of the mutual communication between the water inlet channel a and the water outlet channel b, the present invention connects the heat dissipation tube group 51 through the rear coil 53 to realize the communication between the water inlet channel a, the water outlet channel b and the rear coil 53, and then uses the connection between the water inlet channel A and the drainage channel B in the rear coil 53 to complete the flow process of cooling water through the water inlet channel a to the water inlet channel A of the rear coil 53, and then through the drainage channel B to the water outlet channel b.

[0043] like Figures 6 to 9 As shown, the following preferred technical solutions are provided:

[0044] The circulation pipe group 54 includes a circulation inner pipe 541 and a circulation outer pipe 542. The circulation inner pipe 541 is installed on the main shaft 2 through a bearing 55 and is connected to the front silicon steel seat 41 and the front coil 52. The circulation inner pipe 541 is connected to the water inlet pipe 522 and the drain pipe 523 of the front coil 52. The circulation outer pipe 542 is sealed on the circulation inner pipe 541 and is connected thereto.

[0045] The inner circulation pipe 541 includes an inner water inlet trough 5411 and an inner water outlet trough 5412. The inner water inlet trough 5411 is located on the outside of the inner water outlet trough 5412. The inner water inlet trough 5411 is sealed and connected to each water inlet pipe 522 of the front coil 52. The inner water outlet trough 5412 is sealed and connected to each drainage pipe 523 of the front coil 52. The inner water inlet trough 5411 is connected to the outer circulation pipe 542 through a plurality of water inlet troughs 5413. The inner water outlet trough 5412 is connected to the outer circulation pipe 542 through a plurality of water outlet troughs 5414.

[0046] The circulating outer pipe 542 includes an outer water inlet trough 5421 and an outer water outlet trough 5422. The outer water inlet trough 5421 is located on the outside of the outer water outlet trough 5422. The outer water inlet trough 5421 is connected to the inner water inlet trough 5411 of the circulating inner pipe 541 through an inlet annular channel 5423. The outer water outlet trough 5422 is connected to the inner water outlet trough 5412 through an outlet annular channel 5424. The outer water inlet trough 5421 and the outer water outlet trough 5422 are connected to the cooling water pump 6 through a pipeline.

[0047] Specifically, in order to solve the technical problem of cooling water entering and exiting the front coil 52, the heat dissipation tube group 51 and the rear coil 53, the present invention connects the heat dissipation water pump 6 through the circulation outer tube 542, and uses the circulation inner tube 541 to connect the front coil 52 and the circulation outer tube 542, so that when the motor is working, the rotor 4, the front silicon steel seat 41, and the rear silicon steel seat 42 rotate, driving the heat dissipation tube group 51, the front coil 52, the rear coil 53 and the circulation inner tube 541 to rotate synchronously while still being able to pump cooling water in and out.

[0048] Cooling water flows from the outer water inlet trough 5421 of the outer circulation tube 542 through the water inlet annular channel 5423 and the water inlet trough 5413 of the inner circulation tube 541 into the inner water inlet trough 5411. From the inner water inlet trough 5411, it flows into the water inlet pipe 522 and water inlet channel A of the front coil 52. It then flows through the water inlet channel a of the heat dissipation tube assembly 51 into the water inlet channel A and water drain channel B of the rear coil 53. It then enters the water outlet channel b of the heat dissipation tube assembly 51 and the water drain channel B of the front coil 52. It is then discharged through the water drain pipe 523 of the front coil 52 into the inner water outlet trough 5412 of the inner circulation tube 541. The cooling water then flows through the inner water outlet trough 5412 and water outlet channel 5414 of the inner circulation tube 541 into the water outlet trough 5422 of the outer circulation tube 542 before being pumped into the heat dissipation water pump 6, completing the entire cooling cycle. All connections and connections between these pipes, troughs, and other structures are sealed and waterproof.

[0049] like Figure 12 As shown, the cooling water circulates in the heat dissipation mechanism, with the green arrow pointing to the water inlet route and the red arrow pointing to the water outlet route.

[0050] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor with a rotor heat dissipation structure, comprising a motor housing (1), a main shaft (2) and a reducer (3), characterized in that: A rotor (4) and a heat dissipation mechanism (5) are installed in the motor housing (1). Both the rotor (4) and the heat dissipation mechanism (5) are installed on the main shaft (2). A heat dissipation water pump (6) is provided on the outside of the motor housing (1). The heat dissipation water pump (6) is connected to the heat dissipation mechanism (5) through a pipeline. A front silicon steel seat (41) and a rear silicon steel seat (42) are provided at both ends of the rotor (4). The heat dissipation mechanism (5) includes a heat dissipation pipe group (51), a front coil (52) and a rear coil (53). and a circulation pipe group (54), the front coil (52) and the rear coil (53) are respectively mounted on the front silicon steel seat (41) and the rear silicon steel seat (42), the heat dissipation pipe group (51) is inserted into the rotor (4) and its two ends are respectively connected to the front coil (52) and the rear coil (53), the circulation pipe group (54) is connected to the front coil (52), and the heat dissipation water pump (6) pumps water to the front coil (52), the rear coil (53) and the heat dissipation pipe group (51) through the circulation pipe group (54) to dissipate heat.

2. The motor with a rotor heat dissipation structure according to claim 1, characterized in that: The heat dissipation pipe group (51) comprises: a water inlet pipe (511), a water outlet pipe (512) and a ventilation pipe (513); the water inlet pipe (511) is sleeved outside the water outlet pipe (512), and the water outlet pipe (512) is sleeved outside the ventilation pipe (513); a water inlet channel (a) is formed between the water inlet pipe (511) and the water outlet pipe (512); a water outlet channel (b) is formed between the water outlet pipe (512) and the ventilation pipe (513); the ventilation pipe (513) is hollow to form an inner pipe ventilation channel (c); and both ends of the water inlet pipe (511), the water outlet pipe (512) and the ventilation pipe (513) are respectively sealed and connected to the corresponding front coil (52) and rear coil (53).

3. The motor with a rotor heat dissipation structure according to claim 2, characterized in that: The front coil (52) is installed on the front silicon steel seat (41) through the front pipe groove (411). The front pipe groove (411) is opened on the front silicon steel seat (41). A water inlet channel (A) and a drainage channel (B) are provided in the front coil (52). The water inlet channel (A) is connected to the water inlet pipe (511) and the water outlet pipe (512) to form a water inlet channel (a). The drainage channel (B) is connected to the water outlet pipe (512) and the ventilation pipe (513) to form a water outlet channel (b).

4. The motor with a rotor heat dissipation structure according to claim 3, characterized in that: A plurality of connection ports (521) for communicating with the heat dissipation tube group (51) are provided on one side of the front coil (52) close to the heat dissipation tube group (51). A plurality of water inlet pipes (522) and water outlet pipes (523) for water inlet and water outlet are provided on the other side of the front coil (52). The water inlet pipes (522) are connected to the water inlet pipe (511) and the water outlet pipe (512) through the water inlet flow channel (A) in the front coil (52). The water outlet pipes (523) are connected to the water outlet pipe (512) and the ventilation pipe (513) through the water outlet flow channel (B) in the front coil (52). Each of the water inlet pipes (522) and the water outlet pipes (523) is connected to the circulation tube group (54).

5. The motor with a rotor heat dissipation structure according to claim 4, characterized in that: The rear coil (53) is installed on the rear silicon steel seat (42) through the rear pipe groove (421). The rear pipe groove (421) is opened on the rear silicon steel seat (42). A water inlet flow channel (A) and a drainage flow channel (B) are also provided in the rear coil (53). The water inlet flow channel (A) and the drainage flow channel (B) of the rear coil (53) are connected. The water inlet flow channel (A) is connected to the water inlet pipe (511) and the water outlet pipe (512) to form a water inlet channel (a). The drainage flow channel (B) is connected to the water outlet pipe (512) and the ventilation pipe (513) to form a water outlet channel (b).

6. The motor with a rotor heat dissipation structure according to claim 1 or 5, characterized in that: The circulation pipe group (54) includes a circulation inner pipe (541) and a circulation outer pipe (542). The circulation inner pipe (541) is mounted on the main shaft (2) via a bearing (55) and is connected to the front silicon steel seat (41) and the front coil (52). The circulation inner pipe (541) is in communication with the water inlet pipe (522) and the drain pipe (523) of the front coil (52). The circulation outer pipe (542) is sealed and sleeved on the circulation inner pipe (541) and is in communication with the same.

7. The motor with a rotor heat dissipation structure according to claim 6, characterized in that: The inner circulation pipe (541) comprises an inner water inlet trough (5411) and an inner water outlet trough (5412). The inner water inlet trough (5411) is located outside the inner water outlet trough (5412). The inner water inlet trough (5411) is in sealed communication with each water inlet pipe (522) of the front coil (52). The inner water outlet trough (5412) is in sealed communication with each drain pipe (523) of the front coil (52). The inner water inlet trough (5411) is in communication with the outer circulation pipe (542) via a plurality of water inlet trough openings (5413). The inner water outlet trough (5412) is in communication with the outer circulation pipe (542) via a plurality of water outlet trough openings (5414).

8. The motor with a rotor heat dissipation structure according to claim 7, characterized in that: The outer circulation pipe (542) comprises an outer water inlet trough (5421) and an outer water outlet trough (5422). The outer water inlet trough (5421) is located outside the outer water outlet trough (5422). The outer water inlet trough (5421) is connected to the inner water inlet trough (5411) of the inner circulation pipe (541) via an inlet annular channel (5423). The outer water outlet trough (5422) is connected to the inner water outlet trough (5412) via an outlet annular channel (5424). The outer water inlet trough (5421) and the outer water outlet trough (5422) are connected to the heat dissipation water pump (6) via a pipeline.

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