Scroll compressor and control method for scroll compressor

Abstract

The invention relates to a scroll compressor and a control method thereof. The present disclosure provides a scroll compressor, which includes: a scroll assembly, the scroll assembly includes a fixed scroll and a movable scroll that cooperate with each other to compress a working fluid, wherein the fixed scroll includes a first fixed scroll The blade, the movable scroll includes the first movable scroll blade, the first fixed scroll blade and the first movable scroll blade cooperate to define the first compression chamber group; the motor, the motor drives the scroll assembly to run through the rotating shaft; the bypass device, The bypass device is configured to selectively communicate one or more compression chambers of the first compression chamber group with the suction pressure region of the scroll compressor; the control device is configured to control the motor and the bypass device so that at startup Open the bypass before or while starting the motor. The present disclosure also provides a corresponding scroll compressor control method.

Description

technical field [0001] The present invention relates to compressors, in particular to scroll compressors and related control methods. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] A scroll compressor is a commonly used compressor. After the compressor is powered on, the motor of the compressor starts to rotate, and pressure begins to build up in the compression chamber of the scroll assembly. Generally, within a short time after the compressor is started, a high pressure is rapidly generated in the compression chamber. During operation of the compressor, there is friction between various components within the compressor, for example, friction between bearings and constituent parts of the scroll assembly. This friction is usually mitigated by delivering lubricating oil from the bottom sump. However, within a short period of time after the start ...

AI Technical Summary

Problems solved by technology

In this case, the acceleration impact of the motor will also be large, resulting in a large starting current, and the resulting local high temperature will hinder the establishment of effective lubrication at the friction pair

As a result, excessive starting pressure load and lubrication failure will cause the motor to fail to rotate and cannot start normally, which is the so-called "stall".

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