Natural cooling permanent magnet motor

A permanent magnet motor, natural cooling technology, used in cooling/ventilation devices, electromechanical devices, electrical components, etc., can solve the problems of increasing the volume and weight of the motor, increasing the radial size of the motor, and large welding workload, and achieving structural Simple, low temperature rise, weight saving effect

Active Publication Date: 2018-05-04
WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the frame structure of this motor is complicated, and the heat needs to be transmitted through the cylinder of the frame. The multiple first heat dissipation ribs are all welded. Increase the radial size of the motor, which limits the application of the motor in certain places

Method used

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  • Natural cooling permanent magnet motor
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Embodiment Construction

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] refer to figure 1 As shown, a natural air-cooled permanent magnet motor with a fan inside the rotor provided by the present invention, hereinafter referred to as the motor, is mainly composed of a stator 1 and a rotor 2. The stator 1 includes a hollow frame 1.1 and is fixed on the hollow frame. 1.1 on the stator core 1.2, the rotor 2 ...

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Abstract

The invention discloses a natural cooling permanent magnet motor comprising a stator and a rotor. The stator comprises a hollow machine base and a stator core. A plurality of grooves are formed in theouter circumference of a stator punching sheet, and cooling fins are disposed in the grooves. The stator core is internally provided with a plurality of stator slots. Stator windings are disposed inthe slots. The rotor includes a rotor body and a rotor fan. The rotor body includes a rotor hollow shaft and a rotor support. One end of the rotor hollow shaft is provided with an air inlet, the otherend of the rotor hollow shaft is provided with an air outlet, and the air inlet and the air outlet are communicated with a cavity of the rotor support. The rotor support is in a tubular body. The rotor hollow shaft is in series connection with the cavity of the rotor support to form a cooling air flowing channel. Wind pressure is generated by rotation of blades of the rotor fan in the rotor support, so that external environment cooling air is sucked in through the air inlet in the axial direction of a rotating shaft, the air flows through the rotor hollow shaft and the inner surface of the rotor support, and flows out from the air outlet of the rotating shaft to cool the magnetic steel.

Description

technical field [0001] The invention belongs to the technical field of motor cooling, and in particular relates to a natural cooling permanent magnet motor. Background technique [0002] The permanent magnet motor has the advantages of simple structure, reliable operation, low loss, high efficiency, and direct drive control. Therefore, it is widely used in various industrial fields such as cooling fans for power station air-cooling islands, petroleum, mining, and metallurgical rolling. In order to meet the requirements of different application environments and different driving loads, higher requirements are put forward for the motor. The motor will generate loss during operation, which will be converted into heat inside the motor, causing the temperature of each component inside the motor to rise. In order to ensure the stable and safe operation of the motor, the temperature rise of the motor cannot exceed a certain value. A reasonable cooling system is used to control the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K9/22H02K1/16H02K1/30H02K9/06H02K5/20
CPCH02K1/16H02K1/30H02K5/20H02K9/06H02K9/22H02K2213/03
Inventor 张松贾海媛饶靖许晓晖王晨卉
Owner WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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