Title:
AIR CONDITIONING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2008/059737
Kind Code:
A1
Abstract:
Provided is an air conditioning apparatus wherein a supercritical refrigerant
is used and a circulation quantity of the refrigerant is easily adjusted. A refrigeration
unit (1b) uses a refrigerant that operates in a supercritical range, and is provided
with a compressor (21), a first heat exchanger (23), a first expansion mechanism
(V2), a supercooling heat exchanger (24), a second expansion mechanism (V3),
a second heat exchanger (31), and a control section (5). The compressor compresses
the refrigerant. The first heat exchanger cools the high pressure refrigerant
compressed by the compressor. The first expansion mechanism depressurizes
the refrigerant to a critical pressure or lower. The supercooling heat exchanger
supercools the refrigerant depressurized by the first expansion mechanism.
The second expansion mechanism depressurizes the refrigerant cooled by the
supercooling heat exchanger to a low pressure. The second heat exchanger heats
the refrigerant depressurized by the second expansion mechanism. The control
section performs first control to adjust the first expansion mechanism and the
second expansion mechanism so that the liquid refrigerant is reserved in the
supercooling heat exchanger.
Inventors:
SETOGUCHI TAKAYUKI (JP)
Application Number:
PCT/JP2007/071616
Publication Date:
May 22, 2008
Filing Date:
November 07, 2007
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
SETOGUCHI TAKAYUKI (JP)
SETOGUCHI TAKAYUKI (JP)
International Classes:
F25B1/00
Foreign References:
| JP2002168536A | 2002-06-14 | |||
| JP2005226950A | 2005-08-25 | |||
| JP2004100979A | 2004-04-02 | |||
| JP2000205670A | 2000-07-28 | |||
| JP2001004235A | 2001-01-12 |
Attorney, Agent or Firm:
ONO, Yukio et al. (South Forest Bldg.1-4-19, Minamimori-machi,Kita-ku, Osaka-shi, Osaka 54, JP)
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