Surged vapor compression heat transfer systems with reduced defrost requirements

摘要

Surged vapor compression heat transfer systems, devices, and methods are disclosed having refrigerant phase separators that generate at least one surge of vapor phase refrigerant into the inlet of an evaporator after the initial cool-down of an on cycle of the compressor. This surge of vapor phase refrigerant, having a higher temperature than the liquid phase refrigerant, increases the temperature of the evaporator inlet, thus reducing frost build up in relation to conventional refrigeration systems lacking a surged input of vapor phase refrigerant to the evaporator.

主权项

1. A method of operating a heat transfer system during a cooling cycle, comprising:
compressing a refrigerant; expanding the refrigerant; at least partially separating liquid and vapor phases of the refrigerant; introducing at least one surge of the vapor phase of the refrigerant into an initial portion of an evaporator with an expanded refrigerant transfer system, where the initial portion of the evaporator is a volume of the evaporator; introducing the liquid phase of the refrigerant into the initial portion of the evaporator with the expanded refrigerant transfer system; and heating the initial portion of the evaporator in response to the at least one surge of the vapor phase of the refrigerant.