Gas-liquid separator for air conditioner

Abstract

The invention discloses a gas-liquid separator for an air conditioner. The gas-liquid separator comprises a shell (1), an inlet pipe (2) and an outlet pipe (3). An outlet of the inlet pipe (2) and an inlet of the outlet pipe (3) are located in a cavity of the shell (1). A diversion connector (4) and multiple capillary pipes (5) are further arranged in the cavity of the shell (1). The outlet of the inlet pipe (2) communicates with an inlet of the diversion connector (4). Each outlet of the diversion connector (4) communicates with an inlet of the corresponding capillary pipe (5). According to the gas-liquid separator for the air conditioner, liquid impacts on a compressor can be prevented as much as possible under various conditions, and stability and reliability of the compressor are improved.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a gas-liquid separator for air conditioners. Background technique [0002] In the air conditioning system, a gas-liquid separator is installed between the evaporator and the compressor to separate the gas-liquid two-phase refrigerant from the evaporator, and store the unevaporated liquid refrigerant in the gas-liquid separator. Ensure that all the refrigerants entering the compressor are gaseous refrigerants to avoid damage to the compressor caused by liquid shock. [0003] The gas-liquid separator in the prior art includes a shell, an inlet pipe and an outlet pipe. The outlet of the inlet pipe is located at the lower part of the housing chamber, the inlet of the outlet pipe is located at the upper part of the housing chamber, and the gas-liquid two-phase refrigerant enters from the outlet of the inlet pipe. In the shell chamber, the liquid refrigerant accumulates in the lower pa...

AI Technical Summary

Problems solved by technology

However, after the oil return hole is opened, when the refrigerated oil returns to the compressor, the liquid refrigerant in the gas-liquid separator will also enter the compressor along with the oil, causing liquid to hit the compressor. How to realize that the gas-liquid separator only Returning oil but not liquid has always been a technical problem that technicians in the industry are eager to solve but cannot solve

[0005]Moreover, multi-connected air conditioners generally include a huge system composed of several external units. During operation and commissioning, refrigerants will be added gradually, but there is no basis for determining the amount of refrigerants to be added. It may be based on the experience of the technicians, but the volume of the gas-liquid separator is limited. Once the amount of additional refrigerant exceeds the volume of the gas-liquid separator, the situation of liquid hitting the compressor will also occur.

[0006] Another thing is that in the winter defrosting mode, the refrigerant is liquefied and defrosted in the outdoor unit, but the indoor unit does not exchange heat, so the amount of liquid refrigerant is large. After the volume of the gas-liquid separator is increased, it will also cause the condition of liquid hitting the compressor

[0007] In addition, in a unit with multiple external units, if the load is small and only one external unit is turned on, this external unit needs to turn off other non-starting external units The refrigerant stored in the module and the internal unit module is sucked in. The refrigerant in the non-starting module is naturally liquid, which also leads to too much liquid refrigerant, and the liquid hits the compressor.

[0008] In summary, under the above-mentioned various conditions, the gas-liquid separator may fail, resulting in liquid shock to the compressor, reducing the stability and reliability of the compressor operation

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