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Air conditioner system and control method for protecting air conditioner compressor against liquid impacts

A technology for air-conditioning compressors and air-conditioning systems, which is applied in the field of compressors and air-conditioning, can solve problems such as compressor liquid hammer, and achieve the effects of preventing compressor liquid hammer and improving heat exchange efficiency.

Active Publication Date: 2017-03-08
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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  • Air conditioner system and control method for protecting air conditioner compressor against liquid impacts

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specific Embodiment approach

[0065] 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.

[0066] ① Refrigeration cycle:

[0067] 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 conditioner system and a control method for protecting an air conditioner compressor against liquid impacts. The system comprises a compressor (1), a first heat exchanger (11), a second heat exchanger (4) and a throttling device (8). The storage volume of the first heat exchanger is larger than that of the second heat exchanger, and a liquid storage tank (10) is further connected between the first heat exchanger and the throttling device. Parallel branches (16) are further arranged at the two ends of the liquid storage tank in a parallel connection manner, and the parallel branches are provided with first control valves (9a) controlling the branches to be opened and closed. According to the air conditioner system and the control method for protecting the air conditioner compressor against liquid impacts, the liquid storage tank can be not opened when the refrigerant storage amount of the heat exchanger close to the air suction end of the compressor is large and can be opened to store more refrigerants when the refrigerant storage amount of the heat exchanger close to the air suction end of the compressor is small according to needs, and therefore the phenomenon that liquid is carried during air suction is prevented from happening to an air suction opening of the compressor, and liquid impacts of the compressor are effectively prevented.

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 Applications(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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