An air-conditioning system and its control method for preventing liquid shock of air-conditioning compressor

An air-conditioning compressor and air-conditioning system technology, which is applied in the field of compressors and air-conditioning, can solve problems such as compressor liquid shock, achieve the effects of preventing liquid shock, preventing suction from carrying liquid, and improving heat exchange efficiency

Active Publication Date: 2022-03-08
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the air-conditioning system in the prior art is prone to liquid shock of the compressor, thereby providing an air-conditioning system and its control method for preventing liquid shock of the air-conditioning compressor

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  • An air-conditioning system and its control method for preventing liquid shock of air-conditioning compressor

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specific Embodiment approach

[0064] The present invention is for the screw type air-cooled heat pump system of the flooded evaporator. By adding a liquid storage tank at the main liquid pipe of the flooded shell and tube, it can effectively prevent the liquid shock of the compressor and ensure the reliability of the unit; The condensed refrigerant in the liquid shell and tube is removed to ensure that there is enough area in the shell and tube for heat exchange and condensation.

[0065] ① Refrigeration cycle:

[0066] The refrigerant is compressed into a high-temperature and high-pressure gas in the compressor 1, and the refrigerated oil is separated by the external oil separator 2, and then enters the fin heat exchanger 4 through the four-way valve 3 to become a medium-temperature and high-pressure refrigerant liquid, and each fin refrigerates The agent liquid enters the main liquid pipe through the liquid distribution pipe, passes through the one-way valve 5a, and then throttles in the throttling eleme...

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Abstract

The invention provides an air-conditioning system and a control method thereof for preventing liquid shock of an air-conditioning compressor, the system comprising a compressor (1), a first heat exchanger (11), a second heat exchanger (4) and a throttling device (8), wherein the storage volume of the first heat exchanger is greater than the storage volume of the second heat exchanger, and a liquid storage tank (10) is also connected between the first heat exchanger and the throttling device, and A parallel branch (16) is arranged at both ends of the liquid storage tank in parallel, and a first control valve (9a) for controlling the on-off of the branch is arranged on the parallel branch. According to the present invention, the liquid storage tank can not be activated when the refrigerant storage capacity of the heat exchanger close to the suction end of the compressor is large, and the liquid storage tank can be opened when the storage capacity of the heat exchanger close to the suction end of the compressor is small to store the refrigerant. There is a lot of refrigerant, so as to prevent the phenomenon of liquid in the suction port of the compressor, and effectively prevent the liquid hammer of the compressor.

Description

technical field [0001] The invention belongs to the technical field of compressors and air conditioners, and in particular relates to an air conditioner system and a control method thereof for preventing liquid shock of an air conditioner compressor. Background technique [0002] At present, for the screw-type air-cooled heat pump system with a flooded shell-and-tube heat exchanger, the refrigerant liquid is mainly accumulated in the flooded shell-and-tube heat exchanger during cooling, and the refrigerant liquid is accumulated in the finned heat exchanger when heating. In the heater and corresponding pipelines, under normal circumstances, because the storage volume of the flooded shell and tube is larger than that of the fins and corresponding pipelines, there may be such a situation: when heating, a large amount of refrigerant liquid Flock to the finned heat exchange tubes, and the storage volume of the finned heat exchange tubes is not enough to accommodate these refriger...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B43/00
CPCF25B43/006
Inventor 钟海玲黄凯亮程琦刘思源
Owner GREE ELECTRIC APPLIANCES INC
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