Title:
AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/1998/009118
Kind Code:
A1
Abstract:
A refrigerant circuit (1) of this air conditioner includes a main circuit (6) which allows a refrigerant medium to flow through a compressor (2), a condenser (3), a supercooling heat exchanger (10), a first expansion mechanism (4) and an evaporator in the order named, and a bypass circuit (11) which branches from the main circuit (6) at a point between the condenser (3) and the expansion mechanism (4), allows the refrigerant to flow through a capillary tube (12) constituting a second expansion mechanism and the supercooling heat exchanger (10) in the order named and joins the main circuit (6) on the suction side of the compressor (2). The capillary tube (12) imparts a throttle quantity to a bypass flow refrigerant such that a discharge pipe temperature Td of the compressor (2) is higher than a predetermined lower limit value under an assumed critical condition. Therefore, reliability of the compressor can be secured even under an assumed critical condition where an outdoor temperature is -5 �C and an indoor temperature is 28 �C (WB).
Inventors:
KITA KOICHI (JP)
DOMYO NOBUO (JP)
NISHIKAWA KAZUYUKI (JP)
DOMYO NOBUO (JP)
NISHIKAWA KAZUYUKI (JP)
Application Number:
PCT/JP1997/002746
Publication Date:
March 05, 1998
Filing Date:
August 07, 1997
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
KITA KOICHI (JP)
DOMYO NOBUO (JP)
NISHIKAWA KAZUYUKI (JP)
KITA KOICHI (JP)
DOMYO NOBUO (JP)
NISHIKAWA KAZUYUKI (JP)
International Classes:
F25B1/00; F25B5/02; (IPC1-7): F25B1/00
Foreign References:
| JPS57201470U | 1982-12-22 | |||
| JPS56161253U | 1981-12-01 | |||
| JPS5365053U | 1978-06-01 | |||
| JPH074756A | 1995-01-10 | |||
| JPH06265232A | 1994-09-20 |
Attorney, Agent or Firm:
Aoyama, Tamotsu (IMP Building 3-7, Shiromi 1-chome, Chuo-k, Osaka-shi Osaka 540, JP)
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