CN215378589U

CN215378589U - High-speed motor

Info

Publication number: CN215378589U
Application number: CN202121529249.3U
Authority: CN
Inventors: 邓万通; 李想; 董强亮; 刘芳春
Original assignee: Yinchuan Weima Motor Co ltd
Current assignee: Yinchuan Weima Motor Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-12-31
Anticipated expiration: 2031-07-07

Abstract

The utility model discloses a high-speed motor, relates to the technical field of motors, and aims to solve the technical problem that the existing high-speed motor is difficult to radiate. The high-speed motor of the utility model comprises: the rotating shaft is sleeved with a rotor, the rotor is matched with a stator which is coaxially arranged, and an air gap is formed between the stator and the rotor; the stator and the rotor are respectively provided with a heat dissipation channel extending along the axial direction of the rotating shaft at the position close to the air gap; the rotating shaft sleeve is provided with a fan.

Description

High-speed motor

Technical Field

The utility model relates to the technical field of motors, in particular to a high-speed motor.

Background

The high-speed motor is mainly characterized by high rotor speed, high stator winding current and magnetic flux frequency in the iron core, and high power density and loss density. The characteristics determine that the high-speed motor has a special key technology and a special design method different from a normal-speed motor, and the design and manufacturing difficulty is often times greater than that of a common motor.

The rotor speed of the high-speed motor is usually higher than 10000 r/min; when the motor is rotated at such a high speed, the rotor is subjected to a large centrifugal force. In order to ensure that the rotor has enough strength, the rotor of the high-speed motor is designed to be slender. However, the rotor has a small volume and poor heat dissipation conditions, which makes it difficult to dissipate heat from the rotor.

Meanwhile, the friction loss caused by the high-speed friction between the motor rotor and the air gap on the surface of the rotor is far larger than that of a common motor, so that the problem of heat dissipation of the rotor is not considered.

In summary, the prior art generally utilizes heat conduction and heat dissipation of the motor itself, and utilizes a fan for heat dissipation; however, because the high-speed motor rotor has a small volume and poor heat dissipation conditions, and the motor rotor and the air gap generate heat through high-speed friction, the heat dissipation mode in the prior art cannot meet the heat dissipation requirement of the high-speed motor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-speed motor, which is used for solving the technical problem that the existing high-speed motor is difficult to radiate.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a high speed electric machine comprising: the rotating shaft is sleeved with a rotor, the rotor is matched with a stator which is coaxially arranged, and an air gap is formed between the stator and the rotor; the stator and the rotor are respectively provided with a heat dissipation channel extending along the axial direction of the rotating shaft at the position close to the air gap; the rotating shaft sleeve is provided with a fan.

The stator is composed of a plurality of stator punching sheets, and a first heat dissipation hole is formed in the position, close to the top end, of a tooth part of each stator punching sheet; the first heat dissipation holes of the stator punching sheets are aligned to form the heat dissipation channel in the whole structure.

Specifically, the first heat dissipation hole may be any one of a circular hole, a triangular hole, and a square hole.

The rotor is composed of a plurality of rotor punching sheets, and a second heat dissipation hole is formed in the position, close to the top end, of the tooth part of each rotor punching sheet; the second heat dissipation holes of the rotor punching sheets are aligned to form the heat dissipation channel in the whole structure.

Specifically, the second heat dissipation hole may be any one of a circular hole, a triangular hole and a square hole.

Further, the rotating shaft is a hollow shaft.

During practical application, the both ends of pivot are equipped with front end housing and rear end cap respectively, just the front end housing with the rear end cap is connected with casing sealing respectively, the casing with stator fixed connection, just the pivot with the whole of rotor is located the inside of casing.

And the front end cover, the rear end cover and the shell are respectively provided with a third heat dissipation hole.

Specifically, the front end cover and the rear end cover are respectively assembled at two ends of the rotating shaft through bearings.

Compared with the prior art, the high-speed motor has the following advantages:

in the high-speed motor provided by the utility model, the heat dissipation channel can increase the heat dissipation area on one hand and can be used as a channel for air flow on the other hand; in addition, the position of the heat dissipation channel is close to the air gap between the stator and the rotor, so that the heat dissipation channel can effectively release heat generated by high-speed friction between the rotor of the motor and the air gap; meanwhile, the fan can accelerate the air to flow along the circumferential direction, and the fan is matched with the heat dissipation channel, so that a good heat dissipation effect can be obtained.

Drawings

Fig. 1 is a schematic structural diagram of a high-speed motor according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a stator in a high-speed motor according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a rotor in a high-speed motor according to an embodiment of the present invention.

Reference numerals:

1-a rotating shaft; 2-a rotor; 21-rotor punching; 3-a stator; 31-stator punching; 4-an air gap; 5-a heat dissipation channel; 51-a first heat dissipation hole; 52-second louvers; 6-a fan; 71-front end cap; 72-rear end cap; 8-shell.

Detailed Description

For the convenience of understanding, the high-speed motor provided by the embodiment of the utility model is described in detail below with reference to the drawings in the specification.

An embodiment of the present invention provides a high-speed motor, as shown in fig. 1, including: the rotor structure comprises a rotating shaft 1, wherein a rotor 2 is sleeved on the rotating shaft 1, a stator 3 which is coaxially arranged is matched with the rotor 2, and an air gap 4 is formed between the stator 3 and the rotor 2; the stator 3 and the rotor 2 are respectively provided with a heat dissipation channel 5 extending along the axial direction of the rotating shaft 1 at the position close to the air gap 4; the rotating shaft 1 is sleeved with a fan 6.

Compared with the prior art, the high-speed motor provided by the embodiment of the utility model has the following advantages:

in the high-speed motor provided by the embodiment of the utility model, the heat dissipation channel 5 can increase the heat dissipation area on one hand and can be used as a channel for air flow on the other hand; moreover, the position of the heat dissipation channel 5 is close to the air gap 4 between the stator 3 and the rotor 2, so that the heat dissipation channel 5 can effectively release heat generated by high-speed friction between the rotor 2 and the air gap 4 of the motor; at the same time, the fan 6 can accelerate the flow of air in the circumferential direction, and it cooperates with the heat dissipation channel 5 to obtain a good heat dissipation effect.

As shown in fig. 1 and fig. 2, the stator 3 may be formed by a plurality of stator laminations 31, and a first heat dissipation hole 51 is formed at a position of a tooth portion of each stator lamination 31, which is close to a top end; the first heat dissipation holes 51 of the stator laminations 31 are aligned to form a heat dissipation channel 5 in the whole structure.

Specifically, the first heat dissipation hole 51 may be any one of a circular hole, a triangular hole, and a square hole.

As shown in fig. 1 and fig. 3, the rotor 2 may be formed by a plurality of rotor sheets 21, and a second heat dissipation hole 52 is formed at a position of a tooth portion of each rotor sheet 21, which is close to a top end; the second heat dissipation holes 52 of the rotor sheets 21 are aligned to form the heat dissipation channel 5 in the whole structure.

Specifically, the second heat dissipation hole 52 may be any one of a circular hole, a triangular hole, and a square hole.

Further, the rotating shaft 1 may preferably be a hollow shaft, thereby further increasing the heat dissipation area and the flow rate of air.

In practical application, as shown in fig. 1, the two ends of the rotating shaft 1 may be respectively assembled with a front end cover 71 and a rear end cover 72, and the front end cover 71 and the rear end cover 72 may be respectively connected with the housing 8 in a sealing manner; meanwhile, the housing 8 may be fixedly connected with the stator 3, and the whole of the rotating shaft 1 and the rotor 2 is located inside the housing 8.

Wherein, the front end cover 71, the rear end cover 72 and the housing 8 may be respectively provided with third heat dissipation holes, so as to further effectively improve the heat dissipation effect through the third heat dissipation holes.

Specifically, in actual assembly, the two ends of the rotating shaft 1 may be assembled with a front end cover 71 and a rear end cover 72 through bearings, respectively.

In summary, the high-speed motor provided by the embodiment of the utility model mainly has the following advantages:

firstly, the heat dissipation channel can increase the heat dissipation area on one hand and can be used as a channel for air flow on the other hand;

the position of the heat dissipation channel is close to the air gap between the stator and the rotor, so that the heat dissipation channel can effectively release heat generated by high-speed friction between the rotor of the motor and the air gap;

and thirdly, the fan is arranged on the rotating shaft, the rotating shaft is a hollow shaft, and the front end cover, the rear end cover and the shell are provided with heat dissipation holes, so that the heat dissipation area and the air flow are further increased, and the high-speed motor has a good heat dissipation effect.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A high speed electric machine, comprising: the rotating shaft is sleeved with a rotor, the rotor is matched with a stator which is coaxially arranged, and an air gap is formed between the stator and the rotor; the stator and the rotor are respectively provided with a heat dissipation channel extending along the axial direction of the rotating shaft at the position close to the air gap; the rotating shaft sleeve is provided with a fan.

2. The high-speed motor according to claim 1, wherein the stator is composed of a plurality of stator laminations, and a first heat dissipation hole is formed in a position, close to the top end, of a tooth part of each stator lamination; the first heat dissipation holes of the stator punching sheets are aligned to form the heat dissipation channel in the whole structure.

3. The high-speed motor according to claim 2, wherein the first heat dissipation hole is any one of a circular hole, a triangular hole, and a square hole.

4. The high-speed motor according to claim 1, wherein the rotor is composed of a plurality of rotor sheets, and a second heat dissipation hole is formed in a position, close to the top end, of a tooth part of each rotor sheet; the second heat dissipation holes of the rotor punching sheets are aligned to form the heat dissipation channel in the whole structure.

5. The high-speed motor according to claim 4, wherein the second heat dissipation hole is formed in any one of a circular hole, a triangular hole, and a square hole.

6. The high-speed electric machine according to claim 1, wherein the rotating shaft is a hollow shaft.

7. The high-speed motor according to any one of claims 1 to 6, wherein a front end cover and a rear end cover are respectively assembled at two ends of the rotating shaft, the front end cover and the rear end cover are respectively in sealed connection with a shell, and the shell is fixedly connected with the stator.

8. The high-speed motor according to claim 7, wherein the front and rear covers and the housing are respectively provided with third heat dissipation holes.

9. The high-speed electric machine according to claim 7, wherein both ends of the rotating shaft are respectively fitted with the front end cover and the rear end cover through bearings.