Patent ID: 6233961
Filing Date: 2001-05-22
Classification: F25B

Abstract:
A refrigerating apparatus comprising refrigerant circuitry (11) in which a compressor (15, 22), a heat-source-side heat exchanger (17), a pressure reduction mechanism (18), and a heat-use-side heat exchanger (20) are sequentially connected,wherein the refrigerant circuitry (11) includes:shutoff means (23) provided between the heat-source-side heat exchanger (17) and the heat-use-side heat exchanger (20);a refrigerant charging section (40A) provided downstream of the shutoff means (23) and brought into communication with a refrigerant source (31) when refrigerant is charged into this refrigerant circuitry (11); anda pressure relieving circuit (SVP) for conducting refrigerant in a high-pressure-side line of the refrigerant circuitry (11) to a low-pressure-side line thereof when the refrigerant is charged into the refrigerant circuitry (11) with the compressor (15, 22) driven;wherein the pressure relieving circuit is formed of a refrigerant passage (SVP) for providing communication between the high-pressure-side and low-pressure-side lines of the refrigerant circuitry (11), and is provided with auxiliary shutoff means (25) that is opened during the charged of refrigerant.