| 摘要 |
PURPOSE: To reduce the calculating error of the degree of supercooling by reducing the calculated error of the saturated liquid refrigerant temperature of dryness '0' or the detecting error of the condenser outlet refrigerant temperature. CONSTITUTION: The saturated liquid refrigerant temperature of dryness function '0' is calculated based on the value of a discharge pressure sensor 43 provided at the discharge side of a compressor 21 at the time of a cooling mode and the refrigerant pressure loss at the arranging position of a cooling outlet temperature sensor 44 from the arranging position of the sensor 43. Further, the outlet refrigerant temperature at the arranging position of the sensor 44 is calculated based on the detected value of an atmospheric temperature sensor 41. Thus, the response is excellent as compared with the case that the saturated liquid refrigerant temperature is obtained by the temperature sensor, and the degree of supercooling can be accurately calculated without deliberately providing a separate sensor. |
