To provide an expander and a refrigeration cycle device using the expander simplifying a piping structure to supply oil to the expander, and suppressing degradation of heat exchange performance by reducing a circulation amount of the oil to an evaporator.
This scroll expander 1 is provided with an oil pathway for distributing the oil after lubricating a bearing section of an expanding mechanism 50 to a sub-compressing mechanism 60. In the refrigeration cycle device 100 using the scroll expander 1, a discharge port of the sub-compressing mechanism 60 is connected to a compressing process of a main compressor 5. Further the scroll expander includes a main oil return pipe 22a for guiding the oil separated by an oil separator 26 to a suction side of the main compressor 5, and a sub-oil return pipe 22b for guiding the oil separated by the oil separator 26 to the bearing section of the expanding mechanism 50.
ISHIZONO FUMIHIKO
NAGATA HIDEAKI
SHIMOJI MIHOKO
SEKIYA SHIN
KODA TOSHIHIDE
KAGA KUNIHIKO
| JP2007192508A | 2007-08-02 | |||
| JP2004257303A | 2004-09-16 | |||
| JP2003279179A | 2003-10-02 | |||
| JP2008128576A | 2008-06-05 | |||
| JP2008157583A | 2008-07-10 |
Kiyoshi Yasushima
Takanashi Norio
Motoki Shandong
Taku Ogawa
Murata Kensei
Moto Otani