CN211009269U

CN211009269U - Motor cooling fan

Info

Publication number: CN211009269U
Application number: CN201921825693.2U
Authority: CN
Inventors: 周彩阳; 周哲; 肖姣辉; 周丹榕
Original assignee: XIANGTAN LIYUAN ELECTRIC TOOLING CO Ltd
Current assignee: XIANGTAN LIYUAN ELECTRIC TOOLING CO Ltd; Xiangtan Electric Manufacturing Co Ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-07-14
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses a motor cooling fan, which comprises a fan seat, a disc and a plurality of blades; the disc is installed on fan seat lateral wall, and a plurality of blades are evenly installed on the disc along the circumferencial direction, and the blade shape is fan-shaped distortion shape, and sectorial tip is fixed with the disc, forms the contained angle between blade and the disc terminal surface. Because the blade is fan-shaped distortion shape, has the contained angle between installation back and the disc terminal surface, the utility model discloses when high-speed rotatory, the air inlet direction is the axial air inlet, and cooling air flows through along the axial of blade, and the direction is perpendicular with the direction of rotation of blade, and the wind pressure of blade is not big like this, and mechanical loss is little, and the amount of wind is great, and the cooling effect is good.

Description

Motor cooling fan

Technical Field

The utility model belongs to the technical field of the motor is made, especially, relate to a motor cooling fan.

Background

When the existing high-efficiency motor is designed, in order to improve the motor efficiency, a small fan with a smaller outer diameter is adopted as a cooling fan, the mechanical loss is reduced, but the cooling air volume is not large, and in order to ensure that the motor temperature rise does not exceed the standard, the electromagnetic load of the motor can only be designed to be lower, so that the utilization rate of energy sources is reduced, and the motor cost is greatly improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a motor cooling fan that mechanical loss is low, the cooling amount of wind is big.

The technical scheme of the utility model is that: a motor cooling fan comprises a fan base, a disc and a plurality of blades; the disc is installed on fan seat lateral wall, and a plurality of blades are evenly installed on the disc along the circumferencial direction, and the blade shape is fan-shaped distortion shape, and sectorial tip is fixed with the disc, forms the contained angle between blade and the disc terminal surface.

In the above-described motor cooling fan, the outer diameter of the motor cooling fan is equal to the outer diameter of the motor base.

In the motor cooling fan, the disk is uniformly provided with the plurality of vent holes and the reinforcing ribs along the circumferential direction.

Compared with the prior art, the beneficial effects of the utility model are that: because the blade is fan-shaped distortion shape, has the contained angle between installation back and the disc terminal surface, the utility model discloses when high-speed rotatory, the air inlet direction is the axial air inlet, and cooling air flows through along the axial of blade, and the direction is perpendicular with the direction of rotation of blade, and the wind pressure of blade is not big like this, and mechanical loss is little, and the amount of wind is great, and the cooling effect is good.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a right side view of the present invention.

Fig. 3 is a view from direction a in fig. 1.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1-3, the present invention includes a fan base 1, a disc 3 and 6 blades 2 (the number of blades is not limited to 6, but may be 3, 4 or 5, or even more than 6). The fan base 1 is annular, and the side wall of an inner hole of the fan base is provided with an installation key groove 1-1. The disc 3 is annular and is arranged on the side wall of the fan base 1 through an inner hole. A plurality of vent holes 3-1 and reinforcing ribs 3-2 are uniformly arranged on the disc 3 along the circumferential direction. The 6 blades 2 are uniformly arranged on the disc along the circumferential direction, the blades 2 are in a sector twisted shape, the small end of the sector is fixed with the disc 3, and an included angle 2-1 is formed between the blades 2 and the end face of the disc 3. The utility model discloses an external diameter equals or is approximately equal with motor frame excircle size.

Because blade 2 is fan-shaped distortion shape, has the contained angle between the terminal surface of installation back and disc 3, the utility model discloses when high-speed rotatory, the air inlet direction is the axial air inlet, and cooling air flows through along blade 2's axial, and the direction is perpendicular with blade 2's direction of rotation, and blade 2's wind pressure is not big like this, and mechanical loss is little, and the amount of wind is great, and the cooling effect is good.

Claims

1. A motor cooling fan comprises a fan base, a disc and a plurality of blades; the method is characterized in that: the disc is installed on fan seat lateral wall, and a plurality of blades are evenly installed on the disc along the circumferencial direction, and the blade shape is fan-shaped distortion shape, and sectorial tip is fixed with the disc, forms the contained angle between blade and the disc terminal surface.

2. The motor-cooling fan as claimed in claim 1, wherein: the outer diameter of the motor cooling fan is equal to the outer diameter of the motor base.

3. The motor cooling fan according to claim 1 or 2, wherein: a plurality of vent holes and reinforcing ribs are uniformly arranged on the disc along the circumferential direction.