Title:
AIR-CONDITIONING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2013/069043
Kind Code:
A1
Abstract:
This air-conditioning apparatus is provided with: a circulating circuit (A) formed by connecting a compressor (10) having a compression chamber in a sealed container, a first refrigerant flow passage switching apparatus (11), a first heat exchanger (12), a first choke apparatus (16), and second heat exchangers (15) via a refrigerant pipe, whereby a refrigeration cycle is configured; an accumulator (19) provided to a flow passage on the intake side of the compressor (10) for accumulating excess refrigerant; an intake injection pipe (4c) for introducing a fluid or two-phase state refrigerant into a flow passage between the compressor (10) and the accumulator (19) from the outside; and a second choke apparatus (14b) provided to the intake injection pipe (4c). At least the first heat exchanger (12) may be supplied with the refrigerant of a low pressure to operate as an evaporator, and one or all of the second heat exchangers (15) may be supplied with the refrigerant of a high pressure to operate as a condenser so that heating operation can be performed. The air-conditioning apparatus is also provided with a third choke apparatus (14a) that produces an intermediate pressure smaller than the high pressure and greater than the low pressure in a refrigerant flow passage from the second heat exchanger (15) to the first heat exchanger (12) during heating operation. During heating operation, a flow passage on the upstream side of the third choke apparatus (14a) and a flow passage on the upstream side of the second choke apparatus (14b) are connected, and the refrigerant of the intermediate pressure produced by the third choke apparatus (14a) during heating operation is introduced via the second choke apparatus (14b) and the intake injection pipe (4c) to the intake side of the compressor (10).
Inventors:
YAMASHIYA KOJI (JP)
HATOMURA TAKESHI (JP)
ISHIMURA KATSUHIRO (JP)
HATOMURA TAKESHI (JP)
ISHIMURA KATSUHIRO (JP)
Application Number:
PCT/JP2011/006193
Publication Date:
May 16, 2013
Filing Date:
November 07, 2011
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
YAMASHIYA KOJI (JP)
HATOMURA TAKESHI (JP)
ISHIMURA KATSUHIRO (JP)
YAMASHIYA KOJI (JP)
HATOMURA TAKESHI (JP)
ISHIMURA KATSUHIRO (JP)
International Classes:
F25B13/00; F25B1/00
Domestic Patent References:
| WO2011030407A1 | 2011-03-17 | |||
| WO2010049998A1 | 2010-05-06 |
Foreign References:
| JP2008157550A | 2008-07-10 | |||
| JPH05256525A | 1993-10-05 | |||
| JPH07151413A | 1995-06-16 | |||
| JPS5469859A | 1979-06-05 | |||
| JPS61114058A | 1986-05-31 | |||
| JP2002213841A | 2002-07-31 | |||
| JP2001311573A | 2001-11-09 | |||
| JP2005282972A | 2005-10-13 | |||
| JPH02110255A | 1990-04-23 |
Attorney, Agent or Firm:
KOBAYASHI, Hisao et al. (JP)
Hisao Kobayashi (JP)
Hisao Kobayashi (JP)
Download PDF:
Claims:
Previous Patent: ORGANIC EL DISPLAY PANEL AND ORGANIC EL DISPLAY DEVICE
Next Patent: AIR-CONDITIONING APPARATUS
Next Patent: AIR-CONDITIONING APPARATUS