To suppress generation of pulsation and to perform a stable operation of a cycle in a refrigerating cycle device comprising an expander and a compressor.
The compressor 10 comprises a compressing mechanism and a first sealed container receiving the compressing mechanism. The expander 12 comprises an expanding mechanism and a second sealed container receiving the expanding mechanism. A first oil reservoir and a first refrigerant space in which a refrigerant discharged from the compressing mechanism or a refrigerant sucked by the compressing mechanism is filled, are formed in the first sealed container. A second oil reservoir and a second refrigerant space not communicated with a suction hole and a discharge hole of the expanding mechanism are formed in the second sealed container. The first sealed container of the compressor 10 and the second sealed container of the expander 12 are connected through an oil equalization pipe 14 and a pressure equalization pipe 15. The pressure equalization pipe 15 is provided with a pressure loss generating portion 16 for providing the refrigerant flowing in the pressure equalization pipe 15 with pressure loss.
HASEGAWA HIROSHI
WADA MASANOBU
SHIOTANI MASARU
Hiroki Naito
Daisuke Nagano