Title:
EXPANDER AND REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/029203
Kind Code:
A1
Abstract:
Provided are: a rotating expander capable of supplying oil to each bearing section using high-pressure oil supplied from an oil separator, without installation of oil equalizing pipes or pressure equalizing pipes or height or other installation restrictions, and without stirring loss caused by balance weights; etc. The interior of a container (4) is divided into: a first space (4a) supplied with high-pressure oil from the oil separator (26) via an oil supply hole (4c) that penetrates the container (4); and a second space (4b) that has a lower-pressure atmosphere than the first space (4a). Balance weights (79a, 79b) that are supported by a shaft (78) and rotate integrally with the shaft (78) are arranged in the second space (4b). The shaft (78) has: an oil hole (78a) that penetrates the shaft (78) in the shaft direction with one end opening into the first space (4a) and another end opening into the second space (4b); and bearing oil-supply holes (78d) that penetrate in the radial direction of the shaft (78) from the oil hole (78a) and connect to each bearing section (51c, 52d, 61c). The oil inside the first space (4a) is supplied with differential pressure to each bearing section (51c, 52d, 61c) from one end of the oil hole (78a) via the bearing oil-supply holes (78d).
Inventors:
KAKUDA MASAYUKI (JP)
ISHIZONO FUMIHIKO (JP)
NAGATA HIDEAKI (JP)
SHIMOJI MIHOKO (JP)
SEKIYA SHIN (JP)
KODA TOSHIHIDE (JP)
KAGA KUNIHIKO (JP)
ISHIZONO FUMIHIKO (JP)
NAGATA HIDEAKI (JP)
SHIMOJI MIHOKO (JP)
SEKIYA SHIN (JP)
KODA TOSHIHIDE (JP)
KAGA KUNIHIKO (JP)
Application Number:
PCT/JP2011/001199
Publication Date:
March 08, 2012
Filing Date:
March 02, 2011
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
KAKUDA MASAYUKI (JP)
ISHIZONO FUMIHIKO (JP)
NAGATA HIDEAKI (JP)
SHIMOJI MIHOKO (JP)
SEKIYA SHIN (JP)
KODA TOSHIHIDE (JP)
KAGA KUNIHIKO (JP)
KAKUDA MASAYUKI (JP)
ISHIZONO FUMIHIKO (JP)
NAGATA HIDEAKI (JP)
SHIMOJI MIHOKO (JP)
SEKIYA SHIN (JP)
KODA TOSHIHIDE (JP)
KAGA KUNIHIKO (JP)
International Classes:
F01C21/04; F01C1/02; F01C13/04; F25B1/10; F25B43/02
Domestic Patent References:
| WO2009142014A1 | 2009-11-26 | |||
| WO2009142023A1 | 2009-11-26 |
Foreign References:
| JP2001141315A | 2001-05-25 | |||
| JP2009024546A | 2009-02-05 | |||
| JP2009270529A | 2009-11-19 |
Attorney, Agent or Firm:
KOBAYASHI, Hisao et al. (JP)
Hisao Kobayashi (JP)
Hisao Kobayashi (JP)
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Claims:
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