REFRIGERATING SYSTEM Russian patent published in 2018 - IPC F25B1/10 

FIELD: refrigerating equipment.

SUBSTANCE: invention relates to refrigeration technology. Refrigeration system (1) has: A) ejector circuit (3) comprising Aa) high-pressure compressor unit (2) comprising at least one compressor (2a, 2b, 2c, 2d); Ab) heat-removing heat exchanger/gas cooler (4); Ac) ejector (6); Ad) receiver (8) having gas outlet (8b) connected to the inlet port of high-pressure compressor unit (2). B) flow channel of the normal cooling temperature (5), containing in the refrigerant flow direction: Ba) throttling device of the normal cooling temperature (10), hydraulically connected to outlet of the liquid (8c) of receiver (8); Bb) evaporator of the normal cooling temperature (12); V) secondary ejector input line (68) with ejector inlet valve (26), hydraulically connecting outlet pipe (12b) of evaporator of the normal cooling temperature (12) with intake nozzle (6b) of ejector (6); and Bd), normal cooling temperature (22) flow channel valve block, with the possibility to hydraulically connect the inlet connection of high pressure compressor unit (2), either with gas outlet (8b) of receiver (8), or with evaporator outlet nozzle (12b) of normal cooling temperature (12). C) freezing temperature flow channel (7), containing in the refrigerant flow direction: Ca) throttle freezing temperature device (14) hydraulically connected to outlet of liquid (8c) of receiver (8); Cb) freezing temperature evaporator (16); Cc) freezing temperature compressor unit (18) comprising at least one freezing temperature compressor (18a, 18b); and Cd) freezing temperature flow channel valve block (20) configured to hydraulically connect the outlet of freeze temperature compressor unit (18) either with the inlet port of high-pressure compressor unit (2), or with the inlet valve of ejector (26).

EFFECT: technical result consists in increasing the energy efficiency of the refrigeration system and providing different evaporator temperatures over a wide range of ambient air temperatures.

12 cl, 4 dwg