A Quasi-two-stage Compression Circulation System with Ejector Boost

Abstract

The invention relates to a quasi-two-stage compression cycle system with ejector synergies, which is a self-cascade compression refrigeration cycle system, including a compressor connected to a condenser, the condenser connected to a first gas-liquid separator, One liquid outlet of the first gas-liquid separator is connected to the first ejector, and the first ejector is connected to the gas supply port of the compressor through the superheated side of the first regenerator, and the other liquid outlet of the first gas-liquid separator is in turn The subcooling side of the first regenerator and the depressurization cooling element are connected to the inlet of the evaporation side of the evaporative condenser, the outlet of the evaporation side is connected to the secondary flow inlet of the first ejector, and the gas outlet of the first gas-liquid separator The evaporator is connected to the evaporator through the second regenerator, the condensation side of the evaporative condenser, the second gas-liquid separator and the third regenerator, and the evaporator is connected to the evaporator through the third regenerator, the second ejector and the second regenerator Connected with the suction port of the compressor, the system of the present invention has strong ability to adapt to variable working conditions and has small throttling loss.

Description

technical field [0001] The invention relates to the technical field of vapor compression refrigeration and heat pump, in particular to a quasi-two-stage compression type circulation system with an ejector for efficiency enhancement. Background technique [0002] The statements herein merely provide background related to the present invention and do not necessarily constitute prior art. [0003] The current compression cycle system includes a compression refrigeration cycle system and a compression heat pump cycle system. [0004] For the compression refrigeration cycle system, with the development of the industry and the advancement of technology, biomedical, food industry, cold chain logistics and many other fields have put forward new requirements for low temperature refrigeration technology, especially the demand for the temperature area below -40 °C is increasing. strong. At present, the methods for realizing the above-mentioned low temperature area refrigeration mainl...

AI Technical Summary

Problems solved by technology

However, as the evaporation temperature decreases, the irreversible loss of throttling increases, and too much flash gas enters the evaporator, resulting in a decrease in the effective use area of ​​the heat exchanger and an increase in the size of the heat exchanger

[0009] Patent CN110274403A discloses a quasi-two-stage compression cycle system with injector synergy, which improves the suction inlet pressure of the compressor and reduces the power consumption of the compressor. It is difficult to find a suitable air supply point when operating under variable operating conditions only by adjusting the throttle valve during operation

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