Title:
ロータリ式膨張機
Document Type and Number:
Japanese Patent JP4517684
Kind Code:
B2
Abstract:
Two rotary mechanism parts (70, 80) are provided in a rotary expander (60). The first rotary mechanism part (70) is smaller in displacement volume than the second rotary mechanism part (80). A first low-pressure chamber (74) of the first rotary mechanism part (70) and a second high-pressure chamber (83) of the second rotary mechanism part (80) are fluidly connected together by a communicating passageway (64), thereby forming a single expansion chamber (66). High-pressure refrigerant introduced into the first rotary mechanism part (70) expands in the expansion chamber (66). An injection passageway (37) is fluidly connected to the communicating passageway (64). When an motor-operated valve (90) is placed in the open state, high-pressure refrigerant is introduced into the expansion chamber (66) also from the injection passageway (37). This makes it possible to inhibit the drop in power recovery efficiency, even in the condition that causes the actual expansion ratio to fall below the design expansion ratio.
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Inventors:
Masakazu Okamoto
Moriwaki Michio
Eiji Kumakura
Tetsuya Okamoto
Katsumi Hokoya
Moriwaki Michio
Eiji Kumakura
Tetsuya Okamoto
Katsumi Hokoya
Application Number:
JP2004067315A
Publication Date:
August 04, 2010
Filing Date:
March 10, 2004
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
F01C1/356; F01C11/00; F01C13/04; F01C20/00; F01C20/02; F01C20/26; F01C21/00; F01C21/18; F04C23/00; F25B9/06; F25B11/02; F25B1/04; F25B9/00; F25B13/00
Domestic Patent References:
| JP59052343B1 | ||||
| JP2003269103A | ||||
| JP63042802U | ||||
| JP7217406A | ||||
| JP61122301U | ||||
| JP2004044569A |
Attorney, Agent or Firm:
Hiroshi Maeda
Hiroshi Koyama
Hiroshi Takeuchi
Yuji Takeuchi
Katsumi Imae
Tomoo Harada
Hiroshi Koyama
Hiroshi Takeuchi
Yuji Takeuchi
Katsumi Imae
Tomoo Harada