FIELD: manufacturing technology.
SUBSTANCE: invention relates to refrigerating equipment, is intended for use in low-temperature vapour compression refrigerating machines operating on multi-component mixtures of cooling agents, for controlling composition of cooling agent fed into evaporator. Control system for cooling agent composition containing liquid separator located after condenser, and bypass line with in-series located bypass solenoid valve, receiver and throttling device. Cooling agent from the bypass line is directed immediately on to suction in compressor, the coolant supply from bypass line to suction in compressor is controlled by an additional solenoid valve located between receiver and throttling device of bypass line controlled by programmable control unit with preset program.
EFFECT: invention allows improving thermodynamic efficiency of vapour compression cooling machine operating on multi-component mixture of coolants.
2 cl, 1 dwg
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