CN211655930U

CN211655930U - Heat radiation structure of permanent magnet motor

Info

Publication number: CN211655930U
Application number: CN201922189893.XU
Authority: CN
Inventors: 洪真; 李朝阳
Original assignee: Shenzhen Zhongyue Electromechanical Technology Co ltd
Current assignee: Shenzhen Zhongyue New Energy Technology Co ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-10-09
Anticipated expiration: 2029-12-09

Abstract

The utility model relates to a permanent-magnet machine technical field just discloses a permanent-magnet machine's heat radiation structure, including motor housing, stator structure and rotor structure to and including hold air cavity, exhaust chamber, air duct, inlet end and exhaust end. The heat radiation structure of the motor adopts the stator structure and the rotor structure of the air flow direct cooling motor, the cooling mode can effectively reduce the temperature rise of the motor winding and the rotor structure, the current density of the stator winding is improved to 14A to 20A, and the usage amount of the stator winding copper wire is reduced.

Description

Heat radiation structure of permanent magnet motor

Technical Field

The utility model relates to a permanent-magnet machine technical field specifically is a permanent-magnet machine's heat radiation structure.

Background

In the current industrial field, the motor generally adopts a mode of radiating heat from the outside to cool the stator winding, the heat of the stator winding must be conducted to the motor shell through the stator core to radiate the heat, and the current density of the stator winding is only 6A to 7A, so that the current density of the motor winding is limited.

SUMMERY OF THE UTILITY MODEL

The utility model mainly provides a permanent-magnet machine's heat radiation structure, it is unreasonable to solve prior art heat radiation structure, has restricted motor winding's current density problem.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a heat dissipation structure of a permanent magnet motor comprises a motor shell, a stator structure, a rotor structure, an air storage cavity, an exhaust cavity, an air duct, an air inlet end and an exhaust end, wherein the air storage cavity is arranged in the motor shell; the air storage cavity is arranged between a bearing seat of the motor and the first end cover, and the exhaust cavity is arranged between the stator structure and the second end cover; the air passages are distributed on the bearing seat, the front end covers of the stator structure and the rotor structure, the air inlet end is arranged on the motor shell corresponding to the air storage cavity, and the air outlet end is arranged on the motor shell corresponding to the air outlet cavity.

Further, the stator structure comprises an inner stator and an outer stator; the inner stator is arranged on a fixed shaft of the motor, the outer stator is arranged on the inner wall of the motor shell, and the air duct is arranged on the inner stator.

Further, still include the impeller, the impeller sets up in the pivot in the gas storage intracavity.

Further, an air filter element is installed at the air inlet end.

Further, a one-way exhaust valve is installed at the exhaust end.

Has the advantages that: the heat radiation structure of the motor adopts the stator structure and the rotor structure of the air flow direct cooling motor, the cooling mode can effectively reduce the temperature rise of the motor winding and the rotor structure, the current density of the stator winding is improved to 14A to 20A, and the usage amount of the stator winding copper wire is reduced.

Drawings

Fig. 1 is a schematic view of a heat dissipation structure of the present embodiment;

reference numerals: the air filter comprises a motor shell 1, an air storage cavity 2, an exhaust cavity 3, an air duct 4, an air inlet end 5, an exhaust end 6, a first end cover 7, a second end cover 8, a bearing seat 9, a front end cover 10, a fixed shaft 11, an impeller 12, a rotating shaft 13, an air filter element 14, a one-way exhaust valve 15, an inner stator 16 and an outer stator 17.

Detailed Description

The technical solution of the heat dissipation structure of a permanent magnet motor according to the present invention will be described in further detail with reference to the following embodiments.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the heat dissipation structure of a permanent magnet motor of this embodiment includes a motor housing 1, a stator structure, a rotor structure, and an air storage cavity 2, an air exhaust cavity 3, an air duct 4, an air inlet end 5, and an air exhaust end 6; the air storage cavity 2 is arranged between a bearing seat 9 and a first end cover 7 of the motor, and the exhaust cavity 3 is arranged between the stator structure and a second end cover 8; the plurality of air ducts 4 are distributed on the bearing seat 9 and the front end cover 10 of the stator structure and the rotor structure, the air inlet end 5 is arranged on the motor shell 1 corresponding to the position of the air storage cavity 2, and the air outlet end 6 is arranged on the motor shell 1 corresponding to the position of the air outlet cavity 3. The stator structure comprises an inner stator 16 and an outer stator 17; the inner stator 16 is disposed on the fixing shaft 11 of the motor, the outer stator 17 is disposed on the inner wall of the motor housing 1, and the air duct 4 is disposed on the inner stator 16. The device also comprises an impeller 12, wherein the impeller 12 is arranged on a rotating shaft 13 in the air storage cavity 2. The air inlet end 5 is provided with an air filter element 14. The exhaust end 6 is provided with a one-way exhaust valve 15.

When the motor air storage chamber is used, air enters the air storage chamber 2 from the air inlet end 5, the air entering the air storage chamber is filtered through the air filter element 14 to remove impurities, then the air is pressurized by the impeller 12 to form air flow, the pressurized air flow carries out heat dissipation treatment on the internal structure of the motor through the air channel 4 arranged on the bearing seat 9, the front end cover 10 of the stator structure and the front end cover 10 of the rotor structure, and finally the air flow is removed from the air outlet end 6 through the one-way exhaust valve 15. In the process of heat dissipation and cooling, airflow can also flow through the gap between the rotor structure and the stator structure, so that the heat dissipation effect is enhanced. The purpose of increasing the air filter core and the one-way valve is to ensure that the protection level of the motor meets the requirement. The direction of the arrows in fig. 1 represents the direction of the air flow.

The heat radiation structure of the motor adopts the stator structure and the rotor structure of the air flow direct cooling motor, the cooling mode can effectively reduce the temperature rise of the stator winding and the rotor structure, the current density of the stator winding is improved to 14A to 20A, and the usage amount of the stator winding copper wire is reduced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a permanent-magnet machine's heat radiation structure, includes motor housing, stator structure and rotor structure, its characterized in that: comprises an air storage cavity, an exhaust cavity, an air duct, an air inlet end and an exhaust end; the air storage cavity is arranged between a bearing seat of the motor and the first end cover, and the exhaust cavity is arranged between the stator structure and the second end cover; the air passages are distributed on the bearing seat, the front end covers of the stator structure and the rotor structure, the air inlet end is arranged on the motor shell corresponding to the air storage cavity, and the air outlet end is arranged on the motor shell corresponding to the air outlet cavity.

2. The heat dissipation structure of a permanent magnet motor according to claim 1, characterized in that: the stator structure comprises an inner stator and an outer stator; the inner stator is arranged on a fixed shaft of the motor, the outer stator is arranged on the inner wall of the motor shell, and the air duct is arranged on the inner stator.

3. The heat dissipation structure of a permanent magnet motor according to claim 1, characterized in that: the impeller is arranged on the rotating shaft in the gas storage cavity.

4. The heat dissipation structure of a permanent magnet motor according to claim 1, characterized in that: and an air filter element is arranged at the air inlet end.

5. The heat dissipation structure of a permanent magnet motor according to claim 1, characterized in that: and the exhaust end is provided with a one-way exhaust valve.