EJECTOR REFRIGERATION CIRCUIT Russian patent published in 2019 - IPC F25B1/10 F25B9/08 F25B41/00 

FIELD: refrigerating equipment.

SUBSTANCE: invention relates to the refrigeration equipment. Ejector refrigeration circuit (1), contains a high-pressure ejector circuit (3). Heat removing heat exchanger / gas cooler (4) has input side (4a) and the outlet side (4b). Ejector (6) includes a primary high pressure inlet port (6a), a secondary low pressure inlet port (6b), and an output port (6c). High pressure primary inlet port (6a) is fluidly connected to the heat removing heat exchanger / gas cooler (4) outlet side (4b). Receiver (8) has the fluidly connected to the ejector (6) output port (6c) liquid outlet (8c), gas inlet (8a) and outlet (8b) openings. Compressor (2a, 2b, 2c) has input side (21a, 21b, 21c) and the outlet side (22a, 22b, 22c), and the input side (21a, 21b, 21c) is fluidly connected to the receiver (8) gas outlet (8b). Compressor (2a, 2b, 2c) outlet side (22a, 22b, 22c) is fluidly connected to the heat removing heat exchanger / gas cooler (4) inlet side (4a). In the circulating refrigerant flow direction refrigerating evaporator (5) channel contains the fluid pump (7), having inlet side (7a), which is fluidly connected to the receiver (8) liquid outlet (8c), and the outlet side (7b). Refrigerant expansion device (10) has input side (10a), which is fluidly connected to the fluid pump (7) outlet side (7b), and the outlet side (10b). Refrigerated evaporator (12) is fluidly connected between the refrigerant expansion device (10) outlet side (10b) and the ejector (6) secondary low-pressure input port (6b). Fluid pump (7) is located outside the receiver (8) and / or the fluid pump (7) is equipped with containing the switchable bypass valve (15) bypass line (11), which allows the refrigerant to selectively bypass the fluid pump (7) with the switchable bypass valve (15) opening. Ejector refrigerant circuit also comprises the low-temperature channel (9), in the refrigerant flow direction containing: low-temperature expansion unit (14); low-temperature evaporator (16) and low-temperature compressor (18a, 18b). Low-temperature channel (9) is connected between the receiver (8) liquid outlet (8c) and the said compressor (2a, 2b, 2c) input side (21a, 21b, 21c) or between the fluid pump (7) output side (7b) and the said compressor (2a, 2b, 2c) input side (21a, 21b, 21c).

EFFECT: proposed is the ejector refrigeration circuit.

13 cl, 3 dwg