Title:
冷凍装置
Document Type and Number:
Japanese Patent JP4816220
Kind Code:
B2
Abstract:
A compressor ( 20 ) and an expander ( 30 ) are provided in a refrigerant circuit ( 11 ) of an air conditioner ( 10 ). In the compressor ( 20 ), refrigerator oil is supplied from an oil reservoir ( 27 ) to a compression mechanism ( 21 ). In the expander ( 30 ), the refrigerator oil is supplied from an oil reservoir ( 37 ) to an expansion mechanism ( 31 ). Internal spaces of a compressor casing ( 24 ) and an expander casing ( 34 ) communicate with each other through an equalizing pipe ( 41 ). An oil pipe ( 42 ) connecting the compressor casing ( 24 ) and the expander casing ( 34 ) is provided with an oil amount adjusting valve ( 52 ) operated on the basis of an output signal of an oil level sensor ( 51 ). When the oil amount adjusting valve ( 52 ) is opened, the oil reservoir ( 27 ) in the compressor casing ( 24 ) and the oil reservoir ( 37 ) in the expander casing ( 34 ) communicate with each other to allow the refrigerator oil to flow through the oil pipe ( 42 ).
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Inventors:
Katsumi Hokoya
Masakazu Okamoto
Eiji Kumakura
Tetsuya Okamoto
Masakazu Okamoto
Eiji Kumakura
Tetsuya Okamoto
Application Number:
JP2006116686A
Publication Date:
November 16, 2011
Filing Date:
April 20, 2006
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
F25B1/00; F25B11/02; F25B43/02
Domestic Patent References:
| JP2007113815A | ||||
| JP2001141315A | ||||
| JP2003240366A |
Attorney, Agent or Firm:
Hiroshi Maeda
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Atsushi Fujita
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori
Seki Kei
Yasuya Sugiura
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Atsushi Fujita
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori
Seki Kei
Yasuya Sugiura