Motor for compressor and compressor having same

Abstract

The invention discloses a motor for a compressor and the compressor with the motor. The motor comprises a stator core, a stator winding and a rotor core, wherein the stator core is formed by superposing a plurality of stator iron plates; the thickness of each stator iron plate is theta; theta is smaller than or equal to 0.35mm; the rotor core is sleeved with the stator core and can rotate oppositely to the stator core; the rotor core comprises a plurality of magnet slots which are arranged at intervals along the circumferential direction; each magnet slot extends along the axial direction of the rotor core; a magnetic part is arranged in each magnet slot; the rotor core is formed by superposing a plurality of rotor iron plates; the thickness of each rotor iron plate is delta; delta is smaller than or equal to 0.35mm; the residual magnetism Br of each magnetic part at 20 DEG C meets the relational expression: Br is greater than or equal to 1.35T; the iron-loss values per unit weight of the stator iron plates and the rotor iron plates under the conditions that the frequency is 50HZ, the waveform is sine and a magnetic induction peak is 1.5T are smaller than 3.0W / kg. According to the motor for the compressor disclosed by the embodiment of the invention, the target of reducing the copper loss can be achieved; the motor efficiency is improved; and the cost performance of the motor is improved.

Description

technical field [0001] The present invention relates to the technical field of compressors, more specifically, to a motor for a compressor and a compressor having the same. Background technique [0002] Brushless motors with permanent magnets embedded in the rotor are widely used in home appliances such as air-conditioning compressors because of their high efficiency. However, it is difficult to improve the efficiency of the motor, the main reason is that the loss caused by copper loss and iron loss cannot be suppressed. Specifically, the efficiency of a motor depends on losses that combine copper losses and iron losses. Considering the loss, when the tooth width of the stator teeth is small, the loss caused by copper loss dominates, and when the tooth width is large, the loss caused by iron loss dominates. In the current field of home appliances, the motor efficiency has reached a relatively high level, that is, the design has reached the stage where the copper loss and i...

AI Technical Summary

Problems solved by technology

In the current field of home appliances, the motor efficiency has reached a relatively high level, that is, the design has reached the stage where the copper loss and iron loss are balanced. At this time, by changing the shape of the stator punch, whether it is to reduce copper loss or iron loss Leading to another increase in loss, ultimately unable to achieve the improvement of motor efficiency

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