Title:
FLUID MACHINE AND HEAT PUMP EMPLOYING IT
Document Type and Number:
WIPO Patent Application WO/2006/057212
Kind Code:
A1
Abstract:
A compressor integrated with an expander, having a constant high operation efficiency by reducing the bypass pipeline, embodying valve control, reducing the dead space on the suction side, and recovering power from high-pressure working fluid while eliminating the operation condition (restriction) of density ratio=constant . A fluid machine comprising a compressor section (12) for compressing a working fluid sucked into a compression chamber (13) by rotating a drive shaft (14) and an expander section (20) for producing the rotational power of a power recovery shaft (26) by expanding the working fluid sucked into a working chamber (25) is further provided with a sensor (48) for detecting delivery pressure of a delivery chamber (33) and a solenoid valve (40) located at a suction port (27) immediately in front of the inlet of the working chamber (25) and controlling the communication between the suction port (27) and the working chamber (25). High operation efficiency can be ensured constantly without providing a bypass pipeline and without causing deterioration in expansion efficiency due to over expansion or dead space by varying open/closure timing of the solenoid valve (40) such that the quantity of working fluid introduced into the working chamber (25) is a target quantity determined from the delivery pressure obtained from the delivery pressure sensor (48) and a target suction pressure for maximizing the refrigeration cycle efficiency.
Inventors:
MATSUI MASARU
HASEGAWA HIROSHI
OKAICHI ATSUO
OGATA TAKESHI
TAMURA TOMOICHIRO
HASEGAWA HIROSHI
OKAICHI ATSUO
OGATA TAKESHI
TAMURA TOMOICHIRO
Application Number:
PCT/JP2005/021349
Publication Date:
June 01, 2006
Filing Date:
November 21, 2005
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
MATSUI MASARU
HASEGAWA HIROSHI
OKAICHI ATSUO
OGATA TAKESHI
TAMURA TOMOICHIRO
MATSUI MASARU
HASEGAWA HIROSHI
OKAICHI ATSUO
OGATA TAKESHI
TAMURA TOMOICHIRO
International Classes:
F01C20/24; F01C1/344; F01C13/04; F01C21/18; F04C23/02; F25B11/02
Domestic Patent References:
| WO2003089766A1 | 2003-10-30 |
Foreign References:
| JP2000241033A | 2000-09-08 | |||
| JP2001165513A | 2001-06-22 | |||
| JP2004190559A | 2004-07-08 | |||
| JP2004257303A | 2004-09-16 |
Attorney, Agent or Firm:
Shimizu, Yoshihiro (Yashiro Building 14-14, Takadanobaba 2-chome, Shinjuku-k, Tokyo 75, JP)
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