To provide a refrigerator capable of effectively maintaining a function of an intermediate pressure refrigerant bypass circuit for bypassing intermediate pressure gas refrigerant in an intermediate receiver into an intermediate pressure part in a compression stroke of a compressor.
This refrigerator is provided with the compressor, a high pressure gas cooler for cooling high pressure side gas refrigerant, a first throttle device, the intermediate receiver for adjusting amount of refrigerant in refrigerating cycle, a second throttle device, an evaporator using outside air as heat source, and a refrigerating cycle device forming a closed circuit by connecting air-liquid separators sequentially in series. The refrigerating cycle device is provided with the intermediate pressure refrigerant bypass circuit for bypassing intermediate pressure gas refrigerant in the intermediate receiver into the intermediate pressure part in the compression stroke of the compressor. The intermediate pressure refrigerant bypass circuit is provided with a check valve for preventing refrigerant from flowing into the intermediate reciever from the compressor and a refrigerant temperature sensor for detecting refrigerant temperature on an intermediate receiver side of the check valve. Opening of the valve on at least one side of the first throttle device and the second throttle device is controlled in such a way that gas refrigerant temperature detected by the refrigerant temperature sensor becomes higher than ambient air temperature detected by an air temperature sensor.
OTAKE MASAHISA
SATO KOJI
MUKOYAMA HIROSHI
KAMIMURA ICHIRO
SHIKICHI CHIAKI
SUGIMOTO MINORU
SANYO AIR CONDITIONERS KK