Title:
AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2008/029678
Kind Code:
A1
Abstract:
Provided is an air conditioner which can simplify conditions required for judging
a suitable refrigerant quantity. A refrigerant circuit (10) performs cooling
operation to have an outdoor heat exchanger (23) function as a condenser for a
refrigerant to be compressed by a compressor (21) and to have indoor heat exchangers
(42, 52) as evaporators for the refrigerant to be condensed by the outdoor heat
exchanger (23). An outdoor expansion valve (38) is arranged in the downstream
of the outdoor heat exchanger (23) in a flowing direction of the refrigerant in
the refrigerant circuit (10) and in the upstream of a liquid refrigerant connecting
piping (6) in cooling operation to interrupt passage of the refrigerant. A refrigerant
detecting section (39) is arranged in the upstream of the outdoor expansion valve
(38) and detects the quantity of the refrigerant that stays in the upstream of
the outdoor expansion valve (38).
Inventors:
NISHIMURA, Tadafumi (Sakai Plant DAIKIN INDUSTRIES, LTD., 1304, Kanaoka-cho, Kita-ku, Sakai-sh, Osaka 11, 5918511, JP)
西村 忠史 (〒11 大阪府堺市北区金岡町１３０４番地 ダイキン工業株式会社 堺製作所 金岡工場内 Osaka, 5918511, JP)
西村 忠史 (〒11 大阪府堺市北区金岡町１３０４番地 ダイキン工業株式会社 堺製作所 金岡工場内 Osaka, 5918511, JP)
Application Number:
JP2007/066714
Publication Date:
March 13, 2008
Filing Date:
August 29, 2007
Export Citation:
Assignee:
DAIKIN INDUSTRIES, LTD. (Umeda Center Building, 4-12 Nakazaki-Nishi 2-Chome, Kita-ku, Osaka-sh, Osaka 23, 5308323, JP)
ダイキン工業株式会社 (〒23 大阪府大阪市北区中崎西２丁目４番１２号梅田センタービル Osaka, 5308323, JP)
NISHIMURA, Tadafumi (Sakai Plant DAIKIN INDUSTRIES, LTD., 1304, Kanaoka-cho, Kita-ku, Sakai-sh, Osaka 11, 5918511, JP)
ダイキン工業株式会社 (〒23 大阪府大阪市北区中崎西２丁目４番１２号梅田センタービル Osaka, 5308323, JP)
NISHIMURA, Tadafumi (Sakai Plant DAIKIN INDUSTRIES, LTD., 1304, Kanaoka-cho, Kita-ku, Sakai-sh, Osaka 11, 5918511, JP)
International Classes:
F25B49/02; F25B1/00; F25B49/02; F25B1/00
Attorney, Agent or Firm:
ONO, Yukio et al. (SHINJYU GLOBAL IP, South Forest Bldg.1-4-19, Minamimori-machi,Kita-ku,Osaka-sh, Osaka 54, 5300054, JP)
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