Copper rotor

A technology of rotor and copper casting, which is applied in the direction of magnetic circuit rotating parts, electrical components, electromechanical devices, etc., can solve the problems of large starting current, small starting torque, and exceeding the tolerance range, so as to achieve the reduction of rotor resistance, Reduced heat loss and low inertia

Inactive Publication Date: 2018-04-27
CHANGZHOU COLLEGE OF INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the efficiency of the power frequency cast copper rotor motor has been significantly improved, its starting current becomes larger and the starting torque becomes smaller, sometimes even exceeding the tolerance range of the asynchronous motor design standard

Method used

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as Figure 1 to Figure 3 As shown, the cast copper rotor includes a silicon steel sheet body 3 obtained by stacking silicon steel sheets, and also includes a rotating shaft 1 embedded in the hole 3 of the silicon steel sheet body for carrying the silicon steel sheet body. Several pouring holes 31 are evenly distributed along the circumferential direction, copper end caps 2 are poured and formed at both ends of the silicon steel sheet body 3, and copper conductors 4 connected to the copper end caps are formed in the pouring holes 31. The rotating shaft 1 is Hollow shaft.

[0021] The present invention designs a cast copper rotor processed by die-casting, which uses the excellent electrical conductivity of copper to reduce rotor loss, improve point activation efficiency, and reduce rotor resistance, which means that under the same to...

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Abstract

The invention belongs to the field of a motor and particularly relates to a copper rotor. The copper rotor comprises a silicon steel sheet body formed by overlaying silicon steel sheets and also comprises a rotation shaft which is embedded into a hole of the silicon steel sheet body and is used for bearing the silicon steel sheet body. The copper rotor is characterized by that a plurality of pouring holes are uniformly set along the circumference of the silicon steel sheet body. Copper end covers are formed at two ends of the silicon steel sheet body in a pouring mode. Copper conductors connected with the copper end covers are formed in the pouring holes. The rotation shaft is a hollow rotation shaft. The invention designs the lightweight copper rotor. Under the condition of satisfying magnetic flux, the inertia of the rotor is reduced, the eddy current loss and interference generated by a sensing current is reduced, and the efficiency of the motor is improved.

Description

technical field [0001] The invention belongs to the field of motors, in particular to a cast copper rotor. Background technique [0002] With the increasing scarcity of energy, saving energy and reducing consumption has become an extremely urgent task facing the development of the international community. It is of great significance to develop an ultra-efficient motor system to ensure the full utilization and sustainable development of energy in our country. [0003] In terms of reducing motor loss, copper has good electrical conductivity compared to aluminum. The cast copper rotor is a new type of motor rotor with copper as the conductive matrix. Using the excellent electrical conductivity of copper can reduce rotor loss and improve motor efficiency. However, although the efficiency of the power frequency cast copper rotor motor has been significantly improved, its starting current becomes larger and the starting torque becomes smaller, sometimes even exceeding the toleran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K17/16H02K1/32
CPCH02K17/165H02K1/32
Inventor 刘庆新
Owner CHANGZHOU COLLEGE OF INFORMATION TECH
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