REFRIGERATION UNIT Russian patent published in 2021 - IPC F25B1/00 

FIELD: refrigeration unit.

SUBSTANCE: invention relates to refrigeration plant for circulating refrigerant therein during heating operation in turn through the compressor, the first heat exchanger, the expansion valve and the second heat exchanger. The first valve is connected between the compressor and the first heat exchanger. The second valve is connected between the first heat exchanger and the expansion valve. The controller is configured to close the first and second valves when the condition for ending the heating operation is met. Moreover, when the condition for starting the heating operation is met, the controller is configured to initiate the supply of refrigerant from the compressor to the first valve and then open the first and second valves, provided that the first heat exchange capacity of the first heat exchanger is higher than the second heat exchange capacity of the second heat exchanger, and opening the first and second valves and then supplying refrigerant from the compressor to the first valve when this condition is not met.

EFFECT: improved refrigeration unit.

4 cl, 21 dwg