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

FIELD: refrigeration.

SUBSTANCE: invention relates to refrigeration equipment, more specifically, to circuits of refrigeration units, and can be used in manufacture of refrigeration machines. The refrigeration unit with double throttling comprises a compressor, an evaporator, a condenser, an intermediate receiver, and control valves. The refrigerating agent is compressed in the compressor and supplied to the condenser, cooled therein to a saturated state and condensed, and supplied to the linear receiver. The formed liquid refrigerating agent is throttled by means of a control valve into the intermediate receiver, wherein the separated liquid is passed through an electronic heat regulating valve to the evaporator, and the formed vapour is supplied to the suction pipeline of the compressor through an upstream pressure controller.

EFFECT: increase in the amount of liquid contained in the vapour and liquid mixture at the input of the evaporator of the refrigeration unit, and corresponding increase in the coefficient of heat transfer from the refrigerating agent to the surface of the evaporator.

1 cl, 1 dwg