OIL COOLING SYSTEM AND OIL COOLANT METHOD THEREOF

摘要

PURPOSE: An oil cooling system and an oil cooling method thereof are provided to perform inspection and informing functions about the stability of a refrigerant cycle by controlling an emergency signal part to generate an emergency signal when a ratio between refrigerants is out of a predetermined stable ratio range. CONSTITUTION: An oil cooling system comprises a condenser, an evaporator, an electronic expansion valve, a compressor, first and second refrigerant temperature sensors, and a control unit. The electronic expansion valve is installed between the condenser the electronic expansion valve to lower the pressure of refrigerant and control the flow rate of the refrigerant transmitted to the evaporator. The first and second refrigerant temperature sensors are separately installed on pipes between the electronic expansion valve and the evaporator and between the evaporator and the compressor to be spaced apart from the evaporator and the compressor. [Reference numerals] (41) Condenser; (42) Electronic expansion valve; (43) Evaporator; (44) Compressor; (45) Control unit; (AA) Oil out; (BB) Oil in