CN218940805U

CN218940805U - Motor cooling system and fan

Info

Publication number: CN218940805U
Application number: CN202222929363.6U
Authority: CN
Inventors: 张娜娜; 宫晓; 杨海江; 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: 2023-04-28
Anticipated expiration: 2032-11-03

Abstract

The utility model provides a motor cooling system and a fan, wherein the cooling system comprises a first cooling medium channel which is arranged on a motor base and corresponds to a motor stator, and a second cooling medium channel which is used for cooling a motor rotor, wherein at least one heat exchange area is arranged between the second cooling medium channel and the first cooling medium channel, the second cooling medium channel is communicated with a containing cavity which is used for containing the motor stator and the motor rotor in the motor base, and the second cooling medium in the second cooling medium channel exchanges heat with the first cooling medium channel in the heat exchange area and then flows through the containing cavity along the second cooling medium channel. According to the utility model, the first cooling medium channel and the second cooling medium channel are directly utilized to cool the motor without external heat exchange equipment, so that the external heat exchange equipment and the shaft fan of the motor are saved, the failure point of the motor is reduced, and in addition, the temperature of the motor is reduced by introducing air into the motor, the operation is simple, and the cost is reduced.

Description

Motor cooling system and fan

Technical Field

The utility model relates to the technical field of motor cooling and heat dissipation, in particular to a motor heat dissipation system and a fan.

Background

For fans with larger power, the heat generated by the fans is larger, and the heat of the motor rotor, the stator, the bearing and the like in the fans needs to be dissipated when the fans work. In the prior art, the motor is usually cooled by adopting a shell water cooling mode, but the shell water cooling mode only can cool the stator, and the cooling of the rotor is usually finished by driving cooling air by external cooling equipment or a shaft fan, but the external cooler is high in maintenance cost, complicated in structure and additionally required to increase installation space; the shaft with fan can increase the motor shaft power and reduce the motor efficiency. Whether to provide a motor cooling system that need not to add external cooling device, simple, high-efficient dispel the heat becomes the hot spot of people's study. The new scheme is based on this study.

Disclosure of Invention

The utility model provides a motor heat dissipation system and a motor, and the specific implementation modes are as follows:

the motor cooling system comprises a first cooling medium channel which is arranged on a motor base and corresponds to a motor stator, and a second cooling medium channel which is used for realizing cooling of a motor rotor, wherein at least one heat exchange area is arranged between the second cooling medium channel and the first cooling medium channel, the second cooling medium channel is communicated with a containing cavity which is used for containing the motor stator and the motor rotor in the motor base, and the second cooling medium in the second cooling medium channel exchanges heat with the first cooling medium channel in the heat exchange area and then flows through the containing cavity along the second cooling medium channel;

further, the first cooling medium in the first cooling medium channel is cooling water, and the second cooling medium in the second cooling medium channel is cooling air;

further, the motor base outer cover is provided with an outer cover, and a second cooling medium channel is formed between the outer cover and the motor base;

further, the housing encloses at least a portion of the motor housing area provided with the first cooling medium passage;

further, the motor base is provided with a second cooling medium inlet and a second cooling medium outlet of the accommodating cavity, and the second cooling medium inlet is communicated with the second cooling medium channel;

further, the second cooling medium inlet and the second cooling medium outlet are respectively positioned on the tail part and the head part of the motor base corresponding to the two ends of the motor rotor;

further, the plurality of second cooling medium inlets and outlets are respectively arranged, and the plurality of second cooling medium inlets and outlets are respectively and uniformly arranged along the circumferential direction of the motor base at intervals;

further, the second cooling medium channel comprises a connecting pipeline, one end of the connecting pipeline is communicated with the outer cover, and the other end of the connecting pipeline forms an inlet for introducing a second cooling medium from the outside;

in addition, the utility model also provides a fan, which comprises a motor for driving the fan impeller to rotate, wherein the motor cooling system is arranged corresponding to the motor;

further, an induced air structure is arranged at the position corresponding to the air outlet of the fan, and the induced air structure is connected with the second cooling medium channel.

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

1. according to the utility model, the external heat exchange equipment is not needed, the water cooling and the air cooling are directly utilized to finish the effective cooling of the motor rotor and the motor stator, the external heat exchange equipment of the motor and the shaft fan are saved, the motor structure is simple and compact, and the installation space is not needed to be additionally increased;

2. the utility model skillfully utilizes a part of air outlet of the fan as a source of cooling air of the motor, and does not need other equipment for providing cooling air.

Drawings

FIG. 1 is a schematic diagram of a motor heat dissipation system of a fan according to the present utility model;

FIG. 2 is a schematic flow diagram of cooling air in a fan motor cooling system according to the present utility model;

reference numerals illustrate:

1. the air inducing structure comprises an air inducing structure 2, a connecting pipeline 3, an outer cover 4, a cooling water channel 5, a cooling air inlet 6, a cooling air outlet 7, a machine base 8, a stator 9 and a rotor.

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.

The utility model provides a motor cooling system, includes the first cooling medium passageway that corresponds the motor stator and set up on the motor frame to and be used for realizing the second cooling medium passageway to motor rotor cooling, have at least one heat exchange area between second cooling medium passageway and the first cooling medium passageway, the holding chamber that is used for holding motor stator and rotor in the second cooling medium passageway intercommunication motor frame, the second cooling medium in the second cooling medium passageway carries out heat exchange with first cooling medium passageway in heat exchange area, later follows the second cooling medium passageway and flows through the holding chamber. In the prior art, the heat generated by the motor is larger and needs to be dissipated in time, the second cooling medium is introduced into the motor accommodating cavity to cool the motor through the first cooling medium channel and the second cooling medium channel, when the motor cooling system works, the second cooling medium enters the second cooling medium channel to exchange heat with the first medium channel in the heat exchange area, the temperature of the second cooling medium after heat exchange is reduced, and then the second cooling medium flows through the motor accommodating cavity along the second cooling medium channel, so that the temperature of the motor is reduced. In addition, the first cooling medium channel and the second cooling medium channel are positioned on the motor base, external heat exchange equipment is not needed, and the internal space is saved.

The first cooling medium in the first cooling medium channel is cooling liquid, and can be cooling oil or cooling water; the second cooling medium in the second cooling medium channel is a cooling gas, which may be cooling air, which in one embodiment may be provided by an external device.

Embodiment 1, in combination with fig. 1 and fig. 2, the present embodiment provides a fan, including a motor for driving a fan impeller to rotate, and a motor heat dissipation system is disposed corresponding to the motor. Further, the induced air structure 1 is arranged at the position corresponding to the air outlet of the fan, at this time, air generated by the fan is used as cooling air, and a device for generating cooling air is not needed.

The induced air structure 1 is connected with the outer cover 3 through the connecting pipeline 2, and the outer cover 3 is covered outside the motor base 7. The connecting pipeline 2 leads the air led out by the induced air structure 1 into the outer cover 3.

The housing 3 covers at least a part of the motor housing area provided with the cooling water channel 4. The cooling air in the outer cover 3 exchanges heat through the cooling water in the cooling water channel 4, and the larger the area of the motor base area with the cooling water channel 4 is covered by the outer cover 3, the better the heat exchange effect is.

The motor base 7 is provided with a cooling air inlet 5 and a cooling air outlet 6 of the accommodating cavity, and the cooling air inlet 5 is communicated with the cooling air outlet 6. Cooling air in the housing 3 enters the accommodating cavity through the cooling air inlet 5 after heat exchange, and is discharged from the cooling air outlet 6 after flowing through the accommodating cavity. Further, the cooling air inlets 5 and the cooling air outlets 6 are respectively provided in plurality, and the plurality of cooling air inlets 5 and the plurality of cooling air outlets 6 are respectively and uniformly arranged along the circumferential direction of the motor base 7 at intervals. The number of cooling air inlets 5 and cooling air outlets 6 controls the rate at which cooling air enters and exits the receiving chamber, thereby affecting the speed of temperature reduction of the motor.

The cooling air inlet 5 and the cooling air outlet 6 are respectively positioned on the tail part and the head part of the motor base 7 corresponding to the two ends of the motor rotor 9. The cooling air after heat exchange enters from one end of the motor base 7 and flows out from the other end, the cooling air passes through the whole stator 8 and the rotor 9, heat generated by the stator 8 and the rotor 9 is taken away, and the effective flow of the cooling air is realized. Further improving the cooling effect of the cooling air on the motor.

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 motor cooling system is characterized by comprising a first cooling medium channel which corresponds to a motor stator and is arranged on a motor base, and a second cooling medium channel which is used for cooling a motor rotor, wherein at least one heat exchange area is arranged between the second cooling medium channel and the first cooling medium channel, the second cooling medium channel is communicated with a containing cavity which is used for containing the motor stator and the motor rotor in the motor base, and a second cooling medium in the second cooling medium channel exchanges heat with the first cooling medium channel in the heat exchange area and then flows through the containing cavity along the second cooling medium channel.

2. The motor heat dissipation system of claim 1, wherein the first cooling medium in the first cooling medium channel is cooling water and the second cooling medium in the second cooling medium channel is cooling air.

3. A motor heat dissipation system as defined in claim 1, wherein the motor housing is provided with a housing, and wherein a second cooling medium passage is formed between the housing and the motor housing.

4. A fan motor heat dissipation system according to claim 3, wherein said housing encloses at least a portion of the motor housing area provided with the first cooling medium passage.

5. The motor heat dissipating system of claim 1, wherein the motor housing is provided with a second cooling medium inlet and a second cooling medium outlet of the receiving cavity, the second cooling medium inlet being in communication with the second cooling medium channel.

6. The motor cooling system of claim 5, wherein the second cooling medium inlet and the second cooling medium outlet are located on a motor housing tail and a motor housing head, respectively, at opposite ends of the motor rotor.

7. The motor cooling system of claim 5, wherein the second cooling medium inlets and outlets are respectively provided in plurality, and the plurality of second cooling medium inlets and outlets are respectively provided at regular intervals along the circumferential direction of the motor housing.

8. A motor heat dissipation system according to claim 3, wherein said second cooling medium passage comprises a connection pipe having one end communicating with the housing and the other end forming an inlet for introducing the second cooling medium from the outside.

9. A fan comprising a motor for driving a fan wheel to rotate, characterized in that a motor cooling system according to any one of claims 1-8 is provided in correspondence of the motor.

10. The fan as claimed in claim 9, wherein an induced draft structure is provided corresponding to an air outlet position of the fan, and the second cooling medium passage is connected through the induced draft structure.