EP 1780479 A4 20131211 - FREEZER AND AIR CONDITIONER
Title (en)
FREEZER AND AIR CONDITIONER
Title (de)
GEFRIERVORRICHTUNG UND KLIMAANLAGE
Title (fr)
REFROIDISSEUR ET CLIMATISEUR
Publication
Application
Priority
- JP 2005011930 W 20050629
- JP 2004195228 A 20040701
Abstract (en)
[origin: EP1780479A1] The control width can be expanded when the evaporating ability of the evaporator is controlled by the expansion valve in a refrigerating apparatus and air conditioner provided with a refrigerant circuit that has an evaporator configured so that refrigerant flows in from below and flows out from above. The air conditioner (1) has a refrigerant circuit (12) and a first oil returning circuit (101). The refrigerant circuit (12) has a structure in which a plurality of utilization refrigerant circuits (12a, 12b, 12c) configured by the interconnection of a utilization heat exchanger and a utilization expansion valve are connected to a heat source refrigerant circuit (12d) configured by the interconnection of a compression mechanism (21), a heat source heat exchanger (23) configured so that refrigerant flows in from below and flows out from above when the heat source heat exchanger functions as an evaporator, and a heat source expansion valve (24); and uses a combination of refrigerating machine oil and refrigerant that does not separate into two layers in a temperature range of 30°C or below. The first oil returning circuit (101) is connected to a lower portion of the heat source heat exchanger (23) and returns the refrigerating machine oil accumulated inside the heat source heat exchanger (23) to the compression mechanism (21) together with the refrigerant.
IPC 8 full level
F25B 1/00 (2006.01); F25B 31/00 (2006.01); F25B 39/02 (2006.01)
CPC (source: EP US)
F24F 3/06 (2013.01 - EP US); F25B 31/004 (2013.01 - EP US); F25B 39/02 (2013.01 - EP US); F28D 9/00 (2013.01 - EP US); F25B 2341/0016 (2013.01 - EP US)
Citation (search report)
- [XYI] US 5561987 A 19961008 - HARTFIELD JON P [US], et al
- [Y] EP 0339267 A2 19891102 - MITSUBISHI ELECTRIC CORP [JP]
- [X] US 5651257 A 19970729 - KASAHARA KEISUKE [JP], et al
- [X] US 2002162352 A1 20021107 - RING H KENNETH [US], et al
- See references of WO 2006003925A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1780479 A1 20070502; EP 1780479 A4 20131211; AU 2005258567 A1 20060112; AU 2005258567 B2 20080703; CN 1981165 A 20070613; JP 4475278 B2 20100609; JP WO2006003925 A1 20080417; US 2007245752 A1 20071025; WO 2006003925 A1 20060112
DOCDB simple family (application)
EP 05765416 A 20050629; AU 2005258567 A 20050629; CN 200580022344 A 20050629; JP 2005011930 W 20050629; JP 2006528741 A 20050629; US 63010405 A 20050629