REFRIGERATING AND AIR CONDITIONING DEVICE

摘要

The purpose of the present invention is to provide a refrigerating and air conditioning device such that even if a refrigerant condensed by a means (2) for cooling refrigerant using a first heat source that is lower than the outside dew point temperature is below the dew point temperature of the surrounding outside air, condensation is prevented from occurring on refrigerant piping by adjusting the temperature of the liquid refrigerant. The refrigerating and air conditioning device comprises: a main refrigerant circuit in which a compressor (1), the means (2) for cooling refrigerant using a first heat source that is lower than the outside dew point temperature, a first pressure reducing device (3), and an evaporator (4) are connected in a ring via refrigerant piping; and a bypass circuit (11) that is connected between the refrigerant piping on the input side and the refrigerant piping on the output side of the means (2) for cooling refrigerant using a first heat source that is lower than the outside dew point temperature. The bypass circuit (11) sends a portion of the refrigerant discharged from the compressor (1) to the refrigerant piping on the output side of the means (2) for cooling refrigerant using a first heat source below the outside dew point temperature by bypassing the means (2) for cooling refrigerant using a first heat source below the outside dew point temperature.