REFRIGERATING CIRCUIT WITH HEAT REGENERATION MODULE Russian patent published in 2018 - IPC F25B43/00 

FIELD: cooling or freezing equipment.

SUBSTANCE: invention relates to refrigeration technology. Refrigeration circuit contains a compressor, a heat regenerator - a heat exchanger, a gas/liquid separator, a gas cooler/condenser, an expansion tank and an evaporator with an expansion device connected to the upstream evaporator. Separator comprises an inlet refrigerant pipe connected to the output side of the heat exchanger-heat exchanger, an outlet gas phase tube connected to the inlet side of the gas cooler/condenser, and an outlet tube of the liquid phase connected to the expansion tank. Refrigeration circuit further comprises a switchable valve for selectively opening and closing the outlet pipe of the liquid phase of the separator. Switchable valve is configured to switch between the closed position and at least two different open positions, providing different open sections. In a second embodiment, the device comprises at least two switchable valves that are connected in parallel, so as to adjust the amount of liquid refrigerant discharging from the separator by selectively opening one or more of the switchable valves.

EFFECT: improved accuracy of controlling the flow of liquid refrigerant from the separator.

26 cl, 2 dwg