Title:
AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2007/007576
Kind Code:
A1
Abstract:
A model for simulating heat exchange performed, via piping and an indoor heat
exchanger (53), between the air and refrigerant flowing from directly after
an expansion valve (52) up to an entrance or exit of an indoor heat exchanger (53).
The quantity G of leakage of the refrigerant from an expansion valve (52a) of an
indoor unit (12a) that is stopped while other indoor units (12b, 12c) are engaged
in cooling operation is quantitatively estimated using the model based on the
temperature To of the refrigerant immediately after the expansion valve (52a),
room temperature TH1, heat exchanger entrance temperature TH2, etc. When the
leakage quantity G is equal to or greater than a predetermined level, the expansion
valve (52a) is determined to be abnormal and the fact is informed to a user.
Inventors:
KOJIMA MAKOTO (JP)
KASAHARA SHINICHI (JP)
KASAHARA SHINICHI (JP)
Application Number:
PCT/JP2006/313216
Publication Date:
January 18, 2007
Filing Date:
July 03, 2006
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
KOJIMA MAKOTO (JP)
KASAHARA SHINICHI (JP)
KOJIMA MAKOTO (JP)
KASAHARA SHINICHI (JP)
International Classes:
F25B49/02; F25B13/00
Foreign References:
| JP2002071188A | 2002-03-08 | |||
| JPH10238912A | 1998-09-11 | |||
| JPH05296621A | 1993-11-09 |
Attorney, Agent or Firm:
MAEDA, Hiroshi et al. (5-7 Hommachi 2-chome, Chuo-ku, Osaka-sh, Osaka 53, JP)
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