发明申请
- 专利标题： Rotary Expander
- 专利标题（中）： 旋转扩展器
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申请号： US10592869申请日： 2005-03-15
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公开(公告)号： US20080274001A1公开(公告)日： 2008-11-06
- 发明人: Masakazu Okamoto , Michio Moriwaki , Eiji Kumakura , Tetsuya Okamoto , Katsumi Sakitani
- 申请人： Masakazu Okamoto , Michio Moriwaki , Eiji Kumakura , Tetsuya Okamoto , Katsumi Sakitani
- 优先权： JP2004-074454 20040316
- 国际申请： PCT/JP2005/004502 WO 20050315
- 主分类号： F01C19/08
- IPC分类号： F01C19/08 ; F04C27/00
摘要：
The upper and lower end surfaces (67b, 67c) of a rotary piston (67) are formed with annular seal grooves (91) extending along the annular end surfaces (67b, 67c), and an annular lip seal (92) is fitted in each of the seal grooves (91). Thereby, the lubricating oil fed from oil feed grooves (49) in the shaft (40) rarely flows from between the upper and lower end surfaces (67b, 67c) of the rotary piston (67) and front and rear heads (61, 62) and into the fluid chamber (65) of a cylinder (63), so that shortage of lubricating oil is eliminated.