Title:
AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2012/160598
Kind Code:
A1
Abstract:
An air conditioner provided with: an outdoor unit (1) having a condenser (10) and a heat-source-side heat exchanger (12); a plurality of indoor units (2) each having a first throttle device (25) and a use-side heat exchanger (26) and for conditioning the air in an air-conditioning space; branching devices (16) which are coupled to the outdoor unit (1) via a plurality of main pipes (4) and to each indoor unit (2) via a plurality of branch pipes (5) and which circulate the refrigerant from the main tube (4) side to the branch tubes (5) by dividing the refrigerant into the branch tubes (5) and circulate the refrigerant from the branch tube (5) side to the main tube (4) by merging the refrigerant from each branch tube (5) into the main tubes (4); a density detection device (39) disposed in a non-air-conditioning space (8) which is a space that is different from the indoor space (7) and which is located at a position in which the refrigerant is likely to spread to the indoor space (7) when the refrigerant leaks; a blocking device (42) for blocking the flow path between the outdoor unit and the branching devices by the main tubes (4) and/or for blocking the flow path between the indoor devices and the branching devices by the branch tubes; and a blocking valve control device (40) for controlling the blocking device (42) so as to block the flow path for the refrigerant when it is determined, on the basis of the detection of the density detection device (39), that the refrigerant has leaked.
Inventors:
HATOMURA TAKESHI (JP)
YAMASHITA KOJI (JP)
MORIMOTO HIROYUKI (JP)
YAMASHITA KOJI (JP)
MORIMOTO HIROYUKI (JP)
Application Number:
PCT/JP2011/002863
Publication Date:
November 29, 2012
Filing Date:
May 23, 2011
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
HATOMURA TAKESHI (JP)
YAMASHITA KOJI (JP)
MORIMOTO HIROYUKI (JP)
HATOMURA TAKESHI (JP)
YAMASHITA KOJI (JP)
MORIMOTO HIROYUKI (JP)
International Classes:
F25B1/00; F25B49/02; F25B13/00
Domestic Patent References:
| WO2010050007A1 | 2010-05-06 |
Foreign References:
| JP2003130482A | 2003-05-08 | |||
| JPH10115478A | 1998-05-06 | |||
| JP2000274894A | 2000-10-06 | |||
| JP2004116885A | 2004-04-15 | |||
| JPS6277769U | 1987-05-18 |
Attorney, Agent or Firm:
KOBAYASHI, Hisao et al. (JP)
Hisao Kobayashi (JP)
Hisao Kobayashi (JP)
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Claims: