Air-conditioner and control method thereof

Abstract

The invention relates to an air-condition device and a control method thereof. The air-condition device comprises a plurality of compressors which are used for compressing cooling mediums; a liquid storage tank which is connected with the sucking sides of a plurality of compressors; and a pressure balancing device which is connected with the output side of each compressor and the side of the liquid storage tank. The pressure balancing device comprises a pressure balancing pipe which is connected with the output sides of a plurality of compressors and the common side of the liquid storage tank, and a pressure balancing pipe valve which is arranged on the pressure balancing pipe and is used for opening and closing the pressure balancing pipe. A control method of the air-condition device comprises the stages of: the stage of inputting the starting signals of the compressors; the stage of counting the pressure difference; the stage of setting the pressure balancing time; the stage of balancing the pressure; and the stage of starting the compressors. The invention is characterized in that the pressure of the output side and the pressure of the sucking side of the compressor can be balanced before the operation of the started compressor; the compressor to be started is started quickly, thereby not only preventing the starting of the compressor from delaying and increasing the efficiency of the air-condition device system, but also preventing the compressor from being damaged.

Description

technical field [0001] The invention relates to an air conditioner. In particular, it relates to an air conditioner and a control method thereof that enable the compressor to be started only after the suction side of the compressor and the output side of the compressor quickly reach a pressure balance when the compressor is started. Background technique [0002] Generally, an air conditioner uses a heat exchange cycle composed of a compressor, a condenser, an evaporator, and an expansion valve to provide cold or hot air to a building or room where the air conditioner is installed. It is roughly divided into split air conditioners and integrated air conditioners. device. [0003] The split type air conditioner is functionally the same as the integrated air conditioner, but the split type is equipped with an indoor heat exchanger (evaporator or condenser) on the indoor unit, and an outdoor heat exchanger (condenser or evaporator) and compressor on the outdoor unit. The indoo...

AI Technical Summary

Problems solved by technology

[0009] However, when the air conditioner in the prior art starts the compressor, the pressure difference between the suction side of the compressor and the output side of the compressor will affect the start of the compressor, which will cause damage to the compressor.

[0010] In order to solve this problem, when the application for starting the compressor is received, in order to eliminate the pressure difference between the compressor suction side and the compressor output side, the compression can not be started until the pressure balance between the compressor suction side and the compressor output side, thus delaying the start-up of the compressor

This method leads to a reduction in the credibility of the air conditioner since the compressor cannot start up quickly

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