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Title:
REFRIGERATING DEVICE
Document Type and Number:
Japanese Patent JP2013092293
Kind Code:
A
Abstract:

To improve the operation efficiency of a refrigerating device by enlarging power generated in an expander while properly controlling a capacity of each use-side unit in the refrigerating device which distributes refrigerants expanded by the expander to a plurality of use-side units.

In an air conditioner (10) being the refrigerating device, a plurality of indoor units (12a, 12b, 12c) being the use-side units are connected to an outdoor unit (11). In a cooling operation of the air conditioner (10), the refrigerants expanded by the expander (35) of the outdoor unit (11) are made to flow into an air/liquid separator (23) and the liquid refrigerants of the air/liquid separator (23) are distributed to the plurality of indoor units (12a, 12b, 12c). Degassing piping (46) for connecting the air/liquid separator (23) and a compressor (30) includes a gas flow rate control valve (47). A controller (13) of the air conditioner (10) adjusts the opening of the gas flow rate control valve (47) so that a pressure difference between the exit of the expander (35) and the entrance of the compressor (30) becomes a predetermined target pressure difference.


Inventors:
OKAMOTO MASAKAZU
KUMAKURA EIJI
UKIBUNE MASANORI
HIWADA TAKESHI
Application Number:
JP2011233905A
Publication Date:
May 16, 2013
Filing Date:
October 25, 2011
Export Citation:
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Assignee:
DAIKIN IND LTD
International Classes:
F25B11/02; F25B1/00; F25B43/00
Domestic Patent References:
JP2009008350A2009-01-15
JP2006145144A2006-06-08
JP2008267787A2008-11-06
JP2006284035A2006-10-19
JP2009014209A2009-01-22
JP2008002742A2008-01-10
JP2008002743A2008-01-10
JP2006284086A2006-10-19
JP2000241033A2000-09-08
JP2009052752A2009-03-12
JP2009014208A2009-01-22
Foreign References:
EP1046869A12000-10-25
Attorney, Agent or Firm:
Hiroshi Maeda
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Kazunari Ninomiya
Tomoo Harada
Seki Kei
Yasuya Sugiura
Daisuke Kawabe
Masanori Hasegawa
Tsuguya Iwashita
Koji Fukumoto
Ryo Maeda
Mawaki Hachizo
Yukichi Matsunaga
Kenji Kawakita
Shohei Okazawa



 
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