Flash evaporator and air conditioning system

Abstract

The invention discloses a flash evaporator and an air-conditioning system. The flash evaporator comprises a shell, a liquid inlet pipe and an air supplementation pipe, wherein the liquid inlet pipe and the air supplementation pipe are communicated with the shell; an inlet liquid outlet is formed in a side plate of the liquid inlet pipe; the center line L1 of the inlet liquid outlet intersects with the axis of the air supplementation pipe at the point O; an included angle alpha is formed between the center line L1 of the inlet liquid outlet and a polar axis L0 and is greater than -45 degrees and smaller than +45 degrees; the pole of the polar axis L0 is the point O, and the polar axis L0 intersects with the center line of the shell perpendicularly. According to the flash evaporator, the position of the inlet liquid outlet is reasonably limited, the distance from the inlet liquid outlet to the inner wall, opposite to the inlet liquid outlet, of the shell is within the set range, and therefore the distance from the inlet liquid outlet to the inner wall, opposite to the inlet liquid outlet, of the shell is prevented from being excessively small, the amount of flash gas is effectively controlled, the amount of supplementation air is prevented from being excessively great, and the condition that air supplementation is unreasonable is avoided.

Description

technical field [0001] The invention relates to the technical field of air conditioning, more specifically, to a flash evaporator and an air conditioning system. Background technique [0002] The compressor in the air conditioning system can be single-stage compression or multi-stage compression. For multi-stage compression, a flash evaporator is usually used to improve the compression performance. [0003] Specifically, the flash evaporator includes: a shell, a liquid inlet pipe, an air supply pipe, and a liquid outlet pipe that are all communicated with the shell; the liquid inlet pipe communicates with the first heat exchanger through the first throttling element, and the liquid outlet pipe passes through the second The throttling element communicates with the second heat exchanger, the air supply pipe communicates with the compression cavity of the multistage compressor, and both the first heat exchanger and the second heat exchanger are connected with the multistage co...

AI Technical Summary

Problems solved by technology

[0004] At present, the liquid inlet and outlet of the liquid inlet pipe are on the side plate of the liquid inlet pipe. However, when the distance between the liquid inlet and the casing is too close, and the refrigerant flow rate increases, the impact on the inner wall of the casing will increase, and the impact on the wall will The negative pressure generated is large, and the flashing gas increases, which makes the air supply volume too large, and the air supply volume is unreasonable, resulting in abnormal conditions such as the exhaust temperature of the multi-stage compressor cannot be increased, and the cooling capacity of the air conditioning system is low.

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