CN210518017U

CN210518017U - Fan for motor

Info

Publication number: CN210518017U
Application number: CN201921555343.9U
Authority: CN
Inventors: 吴学钎; 赵云峰; 吴婷; 赵兴; 盛海荣; 许锦辉
Original assignee: Anhui Weineng Motor Co ltd
Current assignee: Anhui Weineng Motor Co ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-05-12
Anticipated expiration: 2029-09-17

Abstract

The utility model aims at providing a fan for motor that noise is little, including setting up the fan at the motor shaft tip, the outside cover of fan is equipped with the fan housing, and the fan housing is whole be the tubbiness and with motor casing fixed connection, be provided with on the outer wall of fan housing that air intake, inner wall cover and be equipped with the amortization cotton. In the above scheme, the fan cover is arranged outside the fan, noise generated by the fan is in the inner cavity of the fan cover, and due to the barrel-shaped structure of the fan cover and the silencing cotton arranged on the inner wall of the barrel, the noise generated when the fan rotates is effectively reduced.

Description

Fan for motor

Technical Field

The utility model relates to the technical field of motors, concretely relates to fan for motor.

Background

For some high-power motors, a large amount of heat can be generated in the operation process, if the heat cannot be dissipated in time, the heat is more concentrated, and the motor can be burnt out finally, so that the temperature rise of the motor in the operation cannot be quickly and stably or effectively controlled, the motor can be a very dangerous thing, and a cooling fan is generally used in industry to forcedly dissipate heat of the motor so as to ensure the normal operation of the motor. The conventional motor structure is as follows: the fan is arranged at the tail end of the motor shaft, the outer surface of the motor is blown by the air blown out by the fan, the heat generated in the operation of the motor is taken away, in order to ensure the safety of the fan in the operation, the protective net structure is arranged at the rear end of the fan, the mesh of the protective net can ensure the smoothness of air inlet, and meanwhile, sundries, especially clothes or body parts of operators, can be prevented from contacting the fan blades rotating at high speed, so that equipment damage or even personal injury is caused. But when the fan runs, the protective net can be driven to vibrate, so that large noise is generated, the service life of the cooling fan is influenced on one hand, and the cooling fan is extremely unfriendly to the surrounding environment on the other hand.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a fan for motor that noise is little.

In order to realize the purpose, the utility model discloses a technical scheme be: the utility model provides a fan for motor, is including setting up the fan at motor shaft end portion, and the outside cover of fan is equipped with the fan housing, and the fan housing is whole to be tubbiness and with motor casing fixed connection, is provided with the air intake on the outer wall of fan housing, and the inner wall coats and is equipped with the amortization cotton.

In the above scheme, the fan cover is arranged outside the fan, noise generated by the fan is in the inner cavity of the fan cover, and due to the barrel-shaped structure of the fan cover and the silencing cotton arranged on the inner wall of the barrel, the noise generated when the fan rotates is effectively reduced.

Drawings

Fig. 1 is an overall schematic view of the present invention;

fig. 2 is a perspective view of the fan housing.

Detailed Description

A fan for a motor comprises a fan 20 arranged at the end part of a motor shaft 10, a fan cover 30 is covered outside the fan 20, the fan cover 30 is integrally barrel-shaped and is fixedly connected with the motor shell, an air inlet 31 is arranged on the outer wall of the fan cover 30, and silencing cotton 50 is covered on the inner wall of the fan cover. The fan housing 30 is covered outside the fan 20, noise generated by the fan 20 is in the inner cavity of the fan housing 30, and due to the barrel-shaped structure of the fan housing 30 and the silencing cotton 50 arranged on the inner wall of the barrel for absorbing noise, the noise generated when the fan 20 rotates is effectively reduced.

As the preferred scheme of the utility model, be provided with aviation baffle 40 on the inner wall of fan housing 30, aviation baffle 40 includes straight section 41 and reducing section 42, reducing section 42's big mouth footpath end and the welding of fan housing 30 inner wall, wind is at first through reducing section 42, reducing section 42 is even later with wind by straight section 41 section again, guide to the motor at the uniform velocity, also cover on the outer wall of aviation baffle 40 and be equipped with amortization cotton 50, the noise that produces fan 20 or the noise that aviation baffle 40 vibrates and produce is further absorbed, the noise is reduced effectively.

Specifically, the fan 20 is disposed at a junction of the straight cylindrical section 41 and the diameter-variable section 42 of the air deflector 40, an inner diameter of the straight cylindrical section 41 is larger than an outer diameter of the fan 20, and an area between an inner wall of the air deflector 40 and the fan 20 forms an airflow channel.

In order to blow the wind to the rear end uniformly and uniformly, the shaft cores of the motor shaft 10, the wind shield 30 and the wind deflector 40 are collinear.

The plurality of air inlets 31 are uniformly spaced along the circumferential direction of the hood 30. The uniformly arranged air inlets 31 ensure that air uniformly enters the air hood 30, and ensure that the air uniformly blows on the motor to be cooled.

Claims

1. The utility model provides a fan for motor which characterized in that: the motor shaft noise reduction device comprises a fan (20) arranged at the end of a motor shaft (10), a fan cover (30) covers the outer portion of the fan (20), the fan cover (30) is integrally barrel-shaped and is fixedly connected with a motor shell, an air inlet (31) is formed in the outer wall of the fan cover (30), and silencing cotton (50) covers the inner wall of the fan cover.

2. The blower for a motor of claim 1, wherein: the inner wall of the fan cover (30) is provided with an air deflector (40), the air deflector (40) comprises a straight cylinder section (41) and a reducing section (42), the large-caliber end of the reducing section (42) is welded with the inner wall of the fan cover (30), and the outer wall of the air deflector (40) is also covered with silencing cotton (50).

3. A blower for an electrical machine according to claim 2, characterized in that: the fan (20) is arranged at the junction of the straight cylinder section (41) and the reducing section (42) of the air deflector (40), the inner diameter of the straight cylinder section (41) is larger than the outer diameter of the fan (20), and an air flow channel is formed in the area between the inner wall of the air deflector (40) and the fan (20).

4. A blower for an electrical machine according to claim 3, characterized in that: the shaft cores of the motor shaft (10), the fan cover (30) and the air guide plate (40) are collinear.

5. The blower for a motor of claim 1, wherein: the air inlets (31) are uniformly arranged at intervals along the circumferential direction of the fan cover (30).