Invention Grant
- Patent Title: Positive displacement expander and refrigeration cycle apparatus including positive displacement expander
- Patent Title (中): 正排量膨胀机和制冷循环装置,包括正排量膨胀机
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Application No.: US13518042Application Date: 2010-01-19
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Publication No.: US09121278B2Publication Date: 2015-09-01
- Inventor: Keisuke Takayama , Yusuke Shimazu , Masayuki Kakuda , Hideaki Nagata , Takeshi Hatomura
- Applicant: Keisuke Takayama , Yusuke Shimazu , Masayuki Kakuda , Hideaki Nagata , Takeshi Hatomura
- Applicant Address: JP Chiyoda-Ku, Tokyo
- Assignee: MITSUBISHI ELECTRIC CORPORATION
- Current Assignee: MITSUBISHI ELECTRIC CORPORATION
- Current Assignee Address: JP Chiyoda-Ku, Tokyo
- Agency: Buchanan Ingersoll & Rooney PC
- International Application: PCT/JP2010/000257 WO 20100119
- International Announcement: WO2011/089638 WO 20110728
- Main IPC: F01C11/00
- IPC: F01C11/00 ; F03C2/02 ; F01C1/02 ; F03C4/00 ; F04C2/00 ; F04C18/00 ; F03C2/00 ; F01C20/26 ; F01C13/04 ; F01C20/06

Abstract:
Disclosed is a positive displacement expander equipped with an expansion mechanism in which power is generated using fluid energy produced while a high-pressure fluid, supplied to a plurality of expansion chambers partitioned by an orbiting scroll or a rolling piston, is being expanded and decompressed. The expander includes a communicating pipe that allows each of the expansion chambers to communicate with an expander discharge side and an opening and closing device disposed on the communicating pipe. When supply of the high-pressure fluid is stopped, the opening and closing device is opened by the time when high and low pressures between each of the expansion chambers and the expander discharge side are equalized, thus stopping the orbiting scroll or the rolling piston at a predetermined position so that an expander obtains sufficient driving force when resuming.
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