REFRIGERATION UNIT Russian patent published in 2022 - IPC F25B1/02 F04B25/00 

FIELD: refrigeration equipment.

SUBSTANCE: transport refrigeration unit contains a refrigerant contour operating with CO₂ as a refrigerant, along which the total mass flow of the refrigerant is directed. In the refrigerant contour, there are a cooling refrigerant compressed to high pressure and a heat exchanger located from the side of high pressure, at least one cooling stage, which expands the main mass flow from an intermediate pressure collector in at least one cooling expanding body to low pressure and at the same time provides cooling capacity on a heat exchanger located from the side of low pressure, and a refrigeration compressor block compressing the main mass flow from low pressure to high pressure. The refrigeration compressor block has the first compressor stage for compression of the refrigerant of the main mass flow, supplied at low pressure, to medium pressure, and the second compressor stage for compression of the refrigerator of the main mass flow, compressed to medium pressure, to high pressure.

EFFECT: increase in the efficiency, and simplification of a refrigeration unit.

47 cl, 6 dwg