Compressor driving device, compressor pressure protection method and air conditioner

Abstract

The invention discloses a compressor driving device, a compressor pressure protection method and an air conditioner. The compressor driving device is used for driving a compressor of a refrigerating system and comprises a three-phase alternating current power supply input end, a relay module, a rectifying circuit and a driving control circuit which are sequentially connected, wherein the rectifying circuit is used for converting accessed alternating current into direct current and outputting the direct current to a direct current bus; the driving control circuit is used for converting the direct current output by the direct current bus into compressor drive electric energy to drive the compressor to work; a pressure switch is connected in series with power supply circuit of the relay module; the pressure switch is used for detecting pressure value in the refrigerating system, and when the detected pressure value is larger than preset pressure threshold value, the power supply circuit of the relay module is disconnected; and the driving control circuit is also used for detecting the switching state of the pressure switch and controlling the compressor to stop working when the pressure switch is switched off. With the compressor driving device, safe and reliable operation of the compressor is realized.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to a compressor driving device, a compressor pressure protection method and an air conditioner. Background technique [0002] During the operation of the air-conditioning system, it is necessary to ensure that the system pressure meets the requirements for safe use. If the pressure is abnormal, such as when the pressure is too high, the compressor is not stopped in time, which will cause the pressure to continue to rise and damage the air-conditioning system. This is absolutely not allowed . Therefore, how to ensure the safe and reliable operation of the compressor has become an urgent technical problem to be solved. Contents of the invention [0003] The main purpose of the present invention is to provide a compressor driving device, a compressor pressure protection method and an air conditioner, aiming at realizing safe and reliable operation of the compressor. ...

AI Technical Summary

Problems solved by technology

[0002] During the operation of the air-conditioning system, it is necessary to ensure that the system pressure meets the requirements for safe use. If the pressure is abnormal, such as when the pressure is too high, the compressor is not stopped in time, which will cause the pressure to continue to rise and damage the air-conditioning system. This is absolutely not allowed

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