Oil return system of low-pressure cavity compressor air conditioner

An oil return system and compressor technology, which is applied to the oil return system field of low-pressure chamber compressor air conditioners, can solve the problems of wet operation, compressor oil foaming, and easy to burn out the compressor, so as to prevent wet operation and improve storage capacity. The effect of oil quantity and safety improvement

Inactive Publication Date: 2010-10-27
GUANGDONG CHIGO AIR CONDITIONING
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AI Technical Summary

Problems solved by technology

The low-temperature refrigerant will also gather in the lower temperature parts of the system, such as the oil-gas separator and the bottom of the compressor. When restarting, it will easily cause wet operation and liquid shock. At the same time, due to the sudden drop

Method used

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  • Oil return system of low-pressure cavity compressor air conditioner
  • Oil return system of low-pressure cavity compressor air conditioner

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[0013] In order for those skilled in the art to better understand the technical solutions provided by the present invention, the following will be described in conjunction with specific embodiments.

[0014] See figure 1 , which is a structural schematic diagram of the oil return system of the low-pressure chamber compressor air conditioner in a preferred embodiment of the present invention.

[0015] The oil return system of the low-pressure cavity compressor air conditioner provided by the present invention includes a compressor 1, an oil-gas separator 2, a four-way valve 3, an outdoor heat exchanger 4, and an indoor air conditioner composed of an electronic expansion valve 5 and an indoor heat exchanger 6 connected in series. Heat exchange mechanism 10, gas-liquid separator 7, compressor 1, oil-gas separator 2, four-way valve 3, outdoor heat exchanger 4, indoor heat exchange mechanism 10, four-way valve 3, gas-liquid separator 7 The circulation direction is sequentially con...

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Abstract

The invention discloses an oil return system of a low-pressure cavity compressor air conditioner, which comprises a compressor, an oil-gas separator, four-way valves, an outdoor heat exchanger, an indoor heat exchange mechanism and a gas-liquid separator, wherein the indoor heat exchange mechanism is formed by connecting an electronic expansion valve and an indoor heat exchanger in series, the compressor, the oil-gas separator, the four-way valve, the outdoor heat exchanger, the indoor heat exchange mechanism, the four-way valve and the gas-liquid separator are sequentially connected along the circulating direction of a refrigerant to form a refrigerant loop, the oil-gas separator and the gas-liquid separator are connected with an oil return pipeline, the oil return pipeline is provided with a throttling device, a bypass pipe is arranged between the oil-gas separator and the compressor, and the bypass pipe is provided with a control valve. In the oil return system of the low-pressure cavity compressor air conditioner provided by the invention, the oil storage capacity in the compressor is improved, the aggregation of a liquid refrigerant in the compressor is reduced, and the wet operation of the compressor when started is prevented, thereby the safety of the starting operation of the compressor is improved.

Description

technical field [0001] The invention relates to the field of air-conditioning equipment, in particular to an oil return system for a low-pressure chamber compressor air-conditioner. Background technique [0002] The air conditioner is the air conditioner (air conditioner), and the hanging air conditioner is a unit used to provide processing air to a space area (generally closed). Its function is to adjust the parameters such as temperature, humidity, cleanliness and air flow rate of the air in the room (or closed space, area) to meet the requirements of human comfort or process. Its working principle is: the compressor compresses the gaseous refrigerant into a high-temperature and high-pressure liquid refrigerant, and then sends it to the condenser (outdoor unit) to dissipate heat and becomes a normal temperature and high-pressure liquid refrigerant, so the outdoor unit blows out hot air; When it is hot, there is a part called a four-way valve, which makes the flow directio...

Claims

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Application Information

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IPC IPC(8): F25B31/00F25B49/02
Inventor 李燕崔严鹏李大振张文广林朝壮周超玲陈剑斌
Owner GUANGDONG CHIGO AIR CONDITIONING
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