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Stator assembly and motor having stator assembly

A component and stator technology, which is applied in the field of stator components with cooling and ventilation structure, can solve the problems of restricting the heat transfer rate of the motor heat production link, the threat of the performance stability of the permanent magnet poles, and the large loss of resistance along the way and local, and achieves the reduction of heat. The effect of small expansion and deformation, prolonging the service life, and preventing the narrowing of the air gap

Active Publication Date: 2019-12-31
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this cooling method, the loss of fluid transmission along the process and local resistance is relatively large, which restricts the heat transfer rate of the internal heat generation link of the motor, so that the key internal structure of the motor-the insulation structure still has a high temperature rise and permanent magnet The stability of the magnetic pole performance guarantees the risk of being threatened

Method used

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  • Stator assembly and motor having stator assembly
  • Stator assembly and motor having stator assembly
  • Stator assembly and motor having stator assembly

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Embodiment Construction

[0024] In order to enable those skilled in the art to better understand the technical concept of the present invention, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the accompanying drawings, the same reference numerals always represent the same components.

[0025] Such as figure 1 As shown, in order to reduce eddy current loss and other losses, the stator core 100 of the motor is made of ferromagnetic conductor thin sheets with large resistivity and small hysteresis loop area, which are punched and insulated, and then laminated. In the prior art, when manufacturing the stator core, a plurality of fan-shaped silicon steel sheets are usually spliced ​​along the circumferential direction and stacked along the axial direction, and the column (support column) 210 of the stator bracket 200 is combined with the dovetail groove 110 by fasteners , the silicon steel sheet is fixed to the supporting sh...

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Abstract

The invention relates to a stator assembly and a motor having the stator assembly. The stator assembly comprises a stator iron core (100, 500) and a stator support (200, 600) for supporting the statoriron core (100, 500). The stator assembly further comprises an airflow conveying device, wherein the airflow conveying device is configured to convey a first cold airflow to the radial side surfaces,opposite to the air gap side, of the stator iron core (100, 500) in the radial direction of the stator iron core (100, 500). The other side, opposite to the air gap, of the stator can be cooled in the operation process of a motor, so that the radial two sides of the stator are cooled at the same time, expansion deformation of the stator core is reduced, and the air gap is prevented from narrowing; and high-temperature baking of a magnetic pole of the stator is prevented, so that the magnetic pole is protected, and the service life of the motor is prolonged.

Description

technical field [0001] The present invention relates to the technical field of motors, more specifically, to a stator assembly with a cooling ventilation structure and a motor with the stator assembly. Background technique [0002] The iron core is an important part of the magnetic circuit of the motor. The stator core, the rotor and the air gap between the stator and the rotor form the magnetic circuit of the motor. In an induction motor, the magnetic flux in the stator core is alternating, resulting in core loss, which is called iron loss. Iron loss includes two parts: hysteresis loss and eddy current loss. Hysteresis loss is the energy loss caused by the continuous change of the orientation of magnetic molecules in the iron core when it is magnetized alternately. The eddy current loss is due to the eddy current generated by the iron core when it is alternately magnetized and the resistance loss caused by the eddy current. They are part of the heat source that is genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/20H02K9/04
CPCH02K1/20H02K9/04H02K7/1838H02K9/10H02K1/187H02K9/00F03D80/60F05B2240/122F05B2260/209
Inventor 马盛骏
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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