| 摘要 |
A control device and a method of a supercritical refrigerants system for an air conditioner are provided to optimally control the system regardless of a loss of a coolant by determining excessive heating of an intake side of a target compressor. In a control device of a supercritical refrigerants system for an air conditioner, a compressor(10) compressively discharges a coolant and is capable of changing an amount of discharge. A gas cooler(11) condenses the coolant. A throttle valve(13) drops pressure of the coolant. An evaporator(14) cools the air by using an evaporation of the coolant. A first sensor unit(21) detects a pressure and a temperature of the coolant by being installed on an intake side of the compressor. A second sensor unit(22) senses a pressure and a temperature of the coolant by being installed on a discharge side of the compressor. And, a controller(20) controls an opening degree of the throttle valve and the discharge amount of the compressor according to the signals of the first sensor unit, the second sensor unit, and an intake side sensor(23) of an engine.
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