CN218997861U

CN218997861U - Motor

Info

Publication number: CN218997861U
Application number: CN202222931107.0U
Authority: CN
Inventors: 宫晓; 杨海江; 张娜娜; 宋福川
Original assignee: Vision Power Ltd
Current assignee: Vision Power Ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-05-09
Anticipated expiration: 2032-11-03

Abstract

The utility model relates to the technical field of permanent magnet rotor motors, and provides a motor which comprises a rotating shaft and a rotor arranged on the rotating shaft, wherein fins are arranged on the rotating shaft, a heat conducting structure is arranged between the fins and the rotor, and heat generated on the rotor during operation of the motor is transferred to the fins through the heat conducting structure and is dissipated through the fins. The utility model reasonably designs the positions and the number of the fins and the heat pipes, and utilizes the heat pipes to effectively guide out the heat generated by the rotor through the fins, and the heat pipes and the fins are matched to ensure the effective heat dissipation in the motor and avoid equipment faults; the inside radiating wind path of motor has been rationally designed, and the wind path passes the space of whole stator and rotor, realizes the effective flow of cooling air, makes the motor work under safer temperature.

Description

Motor

Technical Field

The utility model relates to the technical field of permanent magnet rotor motors, in particular to a motor.

Background

For a permanent magnet rotor motor, according to different cooling media, common cooling modes include air cooling and water cooling, wherein air cooling is widely adopted by virtue of simple structure and easy processing, but for the permanent magnet rotor motor, no matter air cooling or water cooling is carried out, the rotor can only conduct forced convection heat dissipation with air through the surface of a rotating shaft. The heat generated by the motor rotor during operation is limited by the convection heat exchange coefficient and heat exchange area of the air, and the heat dissipation effect is not ideal by forced convection heat dissipation by the introduced air alone. If the temperature inside the motor is too high due to the fact that the heat dissipation effect of the motor rotor is not ideal, the working efficiency, stability and power density of the whole motor are greatly affected.

To avoid heat concentration inside the motor and to better solve the heat dissipation problem of the motor rotor, a better heat dissipation mode needs to be sought.

Disclosure of Invention

The utility model provides a motor, which comprises the following specific embodiments:

the utility model provides a motor, includes the pivot and sets up in pivot epaxial rotor, be provided with the fin in the pivot, be provided with heat conduction structure between fin and the rotor, the heat that produces on the rotor when the motor operation is passed to the fin through heat conduction structure and is dispelled the heat through the fin.

Further, the rotating shafts at two ends of the rotor are provided with fins, and the fins at two ends of the rotor are in heat transfer with the rotor through the heat conducting structure.

Further, the fins are arranged in a plurality, and the fins are arranged at intervals around the rotating shaft.

Further, the heat conducting structure is a heat pipe, and the heat pipe is buried in the rotating shaft and distributed along the axis direction of the rotating shaft.

Further, the heat pipes are arranged in a plurality, and the plurality of heat pipes are uniformly distributed along the circumferential direction of the rotating shaft.

Further, the fin is partially or entirely arranged on the rotating shaft of the embedded heat pipe, and one end of the heat pipe corresponding to the rotor is abutted to the end face of the rotor.

Further, a sleeve is arranged on the rotating shaft, the rotor is arranged in the sleeve, the outer side wall of the rotor is clung to the inner wall of the sleeve, the rotating shaft at least partially embedded with the heat pipe is positioned in the sleeve, and the outer wall of the rotating shaft of the part is clung to the inner wall of the sleeve.

Further, the motor further comprises a stand, a rotating shaft, a rotor and a stator of the motor are arranged in the stand, an air inlet and an air outlet are respectively formed in the stand, the air inlet and the air outlet are respectively communicated with chambers at two ends of an inner rotor of the stand, and a gap communicated with the chambers at two ends of the rotor is formed between the sleeve and the motor stator.

Further, the machine base is provided with an air inlet corresponding to the shaft end of the rotating shaft, and the shaft end of the rotating shaft is provided with an induced air fan corresponding to the air inlet.

Further, an air duct is arranged close to the stator, one end of the air duct is communicated with a cavity corresponding to the air outlet in the machine base, and the other end of the air duct is communicated with the air outlet.

By adopting the technical scheme, the utility model has the beneficial technical effects that:

1. according to the utility model, the fins are arranged in the motor, and the fins rotate together with the rotating shaft to play a role of a fan, so that heat transfer can be performed in time;

2. the heat pipes are further arranged, the heat generated by the rotor is effectively led out through the fins by utilizing the heat pipes, the positions and the number of the fins and the heat pipes are reasonably designed, and the heat pipes and the fins are matched to ensure the effective heat dissipation in the motor, so that equipment faults are avoided;

3. according to the utility model, the stator and the rotor are simultaneously cooled through a set of complete air passages, so that the effective flow of cooling air is realized, and the air passage is arranged at the position close to the stator, thereby further promoting the effective cooling of the stator and ensuring that the motor works at safer temperature.

Drawings

FIG. 1 is a schematic view of a blower according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a fan cooling air path according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of a motor shaft and fins according to an embodiment of the utility model.

Reference numerals illustrate:

1. the device comprises a machine base, 2, a rotating shaft, 3, an air inlet, 4, an induced draft fan, 5, a stator, 6, a rotor, 7, a heat pipe, 8, fins, 9 and an air outlet.

Detailed Description

The following describes specific embodiments of the utility model with reference to the drawings and examples:

it should be noted that the structures, proportions, sizes, etc. shown in the drawings are merely for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the utility model, which is defined by the appended claims.

Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.

In embodiment 1, referring to fig. 1 to 3, the utility model provides a motor, which comprises a rotating shaft 2 and a rotor 6 arranged on the rotating shaft, wherein a fin 8 is arranged on the rotating shaft 2, a heat conducting structure is arranged between the fin 8 and the rotor 6, and heat generated on the rotor 6 during operation of the motor is transferred to the fin 8 through the heat conducting structure and is dissipated through the fin 8. Through setting up heat conduction structure, the heat that rotor 6 self produced is in time transmitted to the pivot surface, simultaneously, is provided with fin 8 on the pivot 2, and fin 8 can rotate together with pivot 2 and play the effect of fan. The heat transferred to the surface of the rotating shaft 2 by the fin 8 is effectively removed.

As shown in fig. 3, the rotating shafts 2 at two ends of the rotor 6 are provided with fins 8, and the fins 8 at two ends of the rotor 6 are in heat transfer with the rotor 6 through a heat conducting structure. The fins 8 are provided in plurality, and the fins 8 are arranged at intervals around the rotating shaft 2. Fig. 3 is a preferred embodiment of the present solution, of course, the fins 8 may also be mounted on the shaft 2 at one end of the rotor 6, and the fins 8 may be aluminum fins or other metals with good heat conduction effect, so as to facilitate rapid heat conduction.

For the heat conduction structure, the heat conduction structure adopted in this embodiment is a heat pipe 7, and the heat pipe 7 is buried in the rotating shaft 2 and distributed along the axial direction of the rotating shaft 2. The heat pipe 7 is a heat transfer element with high heat conduction performance and long-distance heat transfer, so that the heat pipe 7 can timely transfer heat generated by the rotor 6 to the surface of the rotating shaft 2 with high efficiency, and the heat pipe 7 can be arranged on two sides of the rotating shaft 2 or only one side of the rotating shaft 2. The number of the heat pipes 7 is also plural, and is selected according to the heat generated by the motor rotor 6, and the plurality of heat pipes 7 are uniformly distributed along the circumferential direction of the rotating shaft 2. In practical application, the heat conducting structure is not limited to the heat pipe 7, and the sheet structure or the tubular structure with higher heat conductivity coefficient can be buried in the rotating shaft to realize heat transfer.

The positions of the fins 8 correspond to the positions of the heat pipes 7, the fins 8 are partially or completely arranged on the rotating shaft 2 embedded with the heat pipes 7, and one end of the heat pipes 7 corresponding to the rotor 6 is abutted to the end face of the rotor 6. The fins 8 are arranged at positions corresponding to the heat pipes 7 and matched with the heat pipes 7, so that a synergistic effect is achieved, and the heat dissipation effect is optimal. The fin 8 can be rectangular or wavy, and the rectangular or wavy fin further plays a role of a fan when rotating along with the rotating shaft, so that wind resistance in the motor is reduced.

The rotating shaft 2 is provided with a sleeve, the rotor 6 is arranged in the sleeve, the outer side wall of the rotor 6 is clung to the inner wall of the sleeve, the rotating shaft 2 at least partially embedded with the heat pipe 7 is positioned in the sleeve, and the outer wall of the rotating shaft 2 of the part is clung to the inner wall of the sleeve. The sleeve is tightly attached to the rotor 6, the sleeve can timely transfer heat generated by the rotor 6 to the heat pipe 7, and then heat dissipation is achieved through the cooperation of the heat pipe 7 and the fins 8.

The scheme also provides a complete heat dissipation air path, as shown in fig. 2, the motor comprises a machine base 1, a rotating shaft 2, a rotor 6 and a stator 5 of the motor are arranged in the machine base 1, an air inlet 3 and a plurality of air outlets 9 are respectively arranged on the machine base 1, and the air inlet 3 and the air outlets 9 are respectively communicated with chambers at two ends of the rotor 6 of the machine base 1. The air inlet 3 is arranged corresponding to the shaft end of the rotating shaft 2, and the air inlet 3 is provided with an induced air fan 4. The induced air fan 4 provides power for the whole set of cooling air paths. Firstly, cooling air enters the cavity from the air inlet 3 through the induced air fan 4, the cooling air passes through the whole stator 5 and the rotor 6, heat of a part of the stator 5 and the rotor 6 is taken away, meanwhile, heat generated on the rotor 6 is transferred to the fins 8 through the heat pipes 7 and is radiated through the fins 8, when the cooling air is in the cavity, on one hand, the cooling air takes away the heat transferred to the fins 8 through the heat pipes 7, on the other hand, the fins 8 rotate along with the rotor 6, the effect of the fan is achieved, the resistance of the cooling air is reduced due to the rotation of the fins 8, the flow of a radiating air path is further promoted, and the cooling air flows out of the air outlet along an air duct which is clung to the stator 5.

Many other changes and modifications may be made without departing from the spirit and scope of the utility model. It is to be understood that the utility model is not to be limited to the specific embodiments, but only by the scope of the appended claims.

Claims

1. The utility model provides a motor, includes the pivot and sets up in epaxial rotor, a serial communication port, be provided with the fin in the pivot, be provided with heat conduction structure between fin and the rotor, the heat that produces on the rotor when the motor operation is passed through heat conduction structure and is passed to the fin and dispel the heat through the fin.

2. The motor of claim 1, wherein the rotating shafts at both ends of the rotor are provided with fins, and the fins at both ends of the rotor are in heat transfer with the rotor through the heat conducting structure.

3. A motor as claimed in claim 1, wherein the plurality of fins are provided in plurality, the plurality of fins being spaced around the shaft.

4. The motor of claim 1, wherein the heat conducting structure is a heat pipe, and the heat pipe is buried in the rotating shaft and distributed along the axial direction of the rotating shaft.

5. The motor of claim 4, wherein the plurality of heat pipes are provided in plurality, and the plurality of heat pipes are uniformly distributed along the circumferential direction of the rotating shaft.

6. The motor of claim 4, wherein the fins are partially or entirely disposed on a shaft of an embedded heat pipe, and one end of the heat pipe corresponding to the rotor is abutted against an end face of the rotor.

7. The motor of claim 4, wherein the shaft is provided with a sleeve, the rotor is disposed in the sleeve, the outer side wall of the rotor is closely attached to the inner wall of the sleeve, the shaft with at least part of the heat pipe embedded therein is disposed in the sleeve, and the outer wall of the shaft is closely attached to the inner wall of the sleeve.

8. The motor of claim 7, comprising a housing, wherein the shaft, rotor and stator of the motor are disposed in the housing, the housing is provided with an air inlet and an air outlet, the air inlet and the air outlet are respectively communicated with chambers at two ends of the inner rotor of the housing, and a gap is provided between the sleeve and the motor stator, wherein the gap is communicated with the chambers at two ends of the rotor.

9. The motor of claim 8, wherein the housing has an air inlet corresponding to the shaft end of the shaft, and an air intake fan is disposed at the shaft end of the shaft corresponding to the air inlet.

10. A motor as claimed in claim 8, wherein an air duct is provided adjacent the stator, one end of the air duct being in communication with a chamber in the housing corresponding to the air outlet, and the other end of the air duct being in communication with the air outlet.