OPERATION METHOD FOR VAPOR-COMPRESSION COOLING MACHINE AND COOLING MACHINE FOR METHOD IMPLEMENTATION Russian patent published in 2004 - IPC

FIELD: cooling equipment, particularly vapor-compression cooling machine operation under low ambient temperature. SUBSTANCE: method of cooling machine operation under low ambient temperature involves determining temperature of ambient air at condenser input by coolant pressure; temporary shutting down machine when working pressure reaches predetermined threshold level; heating coolant up to temperature corresponding to pressure exceeding above threshold level in not less than 6%-12% from working coolant pressure level; switching on compressor. Coolant heating is carried out by heater, which is connected with low-pressure switch. Device for heat removal is secured to fan drive. EFFECT: extended range of cooling machine usage due to possibility of operation thereof under temperature at condenser inlet lower than temperature of evaporator-cooled flow. 11 cl, 6 dwg