REFRIGERATOR TEMPERATURE CONTROL SYSTEM (VERSIONS) Russian patent published in 2002 - IPC

FIELD: refrigerating engineering; control and maintenance of temperature conditions in domestic refrigerator with freezing and cold chambers connected in series. SUBSTANCE: cold chamber is provided with fan connected with evaporator. According to first version, proposed system includes electronic control unit or microprocessor and temperature sensors mounted in chambers. According to second version, proposed system includes thermal insulators whose sensitive elements are mounted in cold chamber for control of compressor operation and in freezing chamber for control of fan operation. Electronic unit or thermostat switches off fan when temperature in freezing chamber drops below preset level. Temperature in cold chamber drops to disconnection of compressor. After disconnection of compressor, special unit switches on fan for definite period of time for using cold accumulated in evaporator of freezing chamber. EFFECT: independent control of temperature in chambers. 3 cl, 2 dwg