EP 2290304 A4 20130605 - AIR CONDITIONER
Title (en)
AIR CONDITIONER
Title (de)
KLIMAANLAGE
Title (fr)
CLIMATISEUR
Publication
Application
Priority
- JP 2009056655 W 20090331
- JP 2008056370 W 20080331
Abstract (en)
[origin: EP2290304A1] Provided is an air conditioner capable of improving a COP in simultaneous heating and cooling operation. The air conditioner is an air conditioning system in which an outdoor unit (100) and a plurality of indoor units (301 to 303) are connected through a branch controller (200), and a supercritical fluid is used, to thereby establish a single refrigerating cycle. The outdoor unit (100) and the branch controller (200) are connected through two pipes of a high-pressure pipe (400) and a low-pressure pipe (500). The branch controller (200) and each of the plurality of indoor units (301 to 303) are connected through two pipes of a high-pressure pipe (700) and a low-pressure pipe (800). The branch controller (200) includes a double-pipe heat exchanger (240) for heat exchange between a medium-pressure two-phase refrigerant and a low-pressure two-phase refrigerant. The medium-pressure two-phase refrigerant is relatively high in temperature and flows into the double-pipe heat exchanger after branching a refrigerant flowing from the outdoor unit toward the plurality of indoor units, and joining together a refrigerant decompressed by a first expansion valve (211) and a refrigerant flowing from the plurality of indoor units. The low-pressure two-phase refrigerant is relatively low in temperature and flows out of the double-pipe heat exchanger toward the outdoor unit after branching a refrigerant flowing out of the double-pipe heat exchanger toward the plurality of indoor units, and decompressing a part of the branched refrigerant by a second expansion valve (212).
IPC 8 full level
F25B 1/00 (2006.01); F25B 9/00 (2006.01); F25B 13/00 (2006.01); F25B 29/00 (2006.01)
CPC (source: EP)
F25B 9/008 (2013.01); F25B 13/00 (2013.01); F25B 41/39 (2021.01); F25B 2309/061 (2013.01); F25B 2313/006 (2013.01); F25B 2313/0231 (2013.01); F25B 2313/02741 (2013.01); F25B 2400/13 (2013.01); F25B 2600/11 (2013.01); F25B 2600/2509 (2013.01); F25B 2600/2513 (2013.01); F25B 2700/191 (2013.01)
Citation (search report)
- No further relevant documents disclosed
- See references of WO 2009123190A1
Citation (examination)
JP 2008002743 A 20080110 - DAIKIN IND LTD
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2290304 A1 20110302; EP 2290304 A4 20130605; JP WO2009123190 A1 20110728; WO 2009122512 A1 20091008; WO 2009123190 A1 20091008
DOCDB simple family (application)
EP 09729048 A 20090331; JP 2008056370 W 20080331; JP 2009056655 W 20090331; JP 2010505935 A 20090331