Vapor compression-jet coupled refrigeration cycle device and method

Abstract

The present invention is a vapor compression-jet coupled refrigeration cycle device and method utilizing the exhaust sensible heat of a refrigeration compressor, which includes a compressor, a generator, a condenser, a throttle valve, a gas-liquid separator, and an evaporator , injectors, liquid booster pumps, liquid level controllers, solenoid valves, pressure sensors, etc. The circulation system uses the superheated steam from the exhaust port of the refrigeration compressor to heat the condensed saturated liquid refrigerant sent by the booster pump in the gasification generator to generate saturated gas under the generation pressure, which is used as an injection throttling After the flash gas separated by the gas-liquid separator is used for the working steam of the ejector, the flash gas generated after being throttled by the throttle valve is separated by the gas-liquid separator and injected into the condenser by the ejector, so that not only It prevents the flash gas from entering the evaporator so that the limited heat exchange area of ​​the evaporator cannot be well utilized. Under the premise of the same cooling capacity, the air delivery volume of the compressor must be reduced, thereby reducing the power consumption of the compressor.

Description

technical field [0001] The invention relates to a vapor compression-jet coupled refrigeration cycle system utilizing the exhaust sensible heat of a refrigeration compressor, which can effectively improve the heat transfer coefficient of an evaporator, reduce the power consumption of a compressor, and thereby increase the refrigeration coefficient. Background technique [0002] In the traditional compression refrigeration cycle, the liquid refrigerant cooled and condensed by the condenser will flash out gaseous refrigerant when throttling, and this part of gaseous refrigerant will not only not generate cooling capacity in the evaporator after entering the evaporator, but will also occupy The heat transfer area of ​​the evaporator affects the evaporation of the liquid refrigerant, thereby reducing the heat transfer efficiency and cooling capacity of the evaporator. At the same time, this part of the low-pressure gas that does not produce cooling capacity will be sucked into the...

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Problems solved by technology

[0002] In the traditional compression refrigeration cycle, the liquid refrigerant cooled and condensed by the condenser will flash out gaseous refrigerant when throttling, and this part of gaseous refrigerant will not only not generate cold energy in the evaporator after entering the evaporator, but will also occupy The heat transfer area of ​​the evaporator affects the evaporation of liquid refrigerant, thereby reducing the heat transfer efficiency and cooling capacity of the evaporator. At the same time, this part of the low-pressure gas that does not produce cooling capacity will be sucked into the compressor, increasing the power consumption of the compressor.

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