EP 2940407 A1 20151104 - HEAT PUMP HOT WATER HEATER
Title (en)
HEAT PUMP HOT WATER HEATER
Title (de)
WÄRMEPUMPENWARMWASSERBEREITER
Title (fr)
CHAUFFAGE À EAU CHAUDE PAR POMPE À CHALEUR
Publication
Application
Priority
JP 2012083692 W 20121226
Abstract (en)
A heat pump hot water heater (10) includes a refrigerant circuit (20), a water circuit (30) and a control unit (40). The refrigerant circuit includes a first heat exchanger (21) configured to cause heat exchange between air and refrigerant, a second heat exchanger (25) configured to cause heat exchange between the refrigerant and water, and a compressor (22) configured to compress the refrigerant. The water circuit includes the second heat exchanger and a water supply mechanism (31) configured to supply the water to the second heat exchanger. The control unit is configured to control the refrigerant circuit and the water circuit so as to perform a defrosting operation of the first heat exchanger. The refrigerant circuit is capable of switching between a forward cycle operation and a reverse cycle operation. At least either in starting the defrosting operation or during performing the defrosting operation, the control unit is configured to determine a possibility of freezing of the water in the water circuit and select to perform either the forward cycle operation or the reverse cycle operation so as to perform the defrosting operation.
IPC 8 full level
F25B 47/02 (2006.01); F24H 1/00 (2006.01); F25B 49/02 (2006.01)
CPC (source: EP US)
F24D 11/0214 (2013.01 - EP); F24D 19/0095 (2013.01 - EP); F24D 19/1039 (2013.01 - EP US); F24H 15/136 (2022.01 - EP US); F24H 15/215 (2022.01 - EP US); F24H 15/254 (2022.01 - EP US); F24H 15/375 (2022.01 - EP US); F24H 15/38 (2022.01 - EP US); F25B 30/02 (2013.01 - EP); F25B 47/025 (2013.01 - EP); F25B 49/02 (2013.01 - EP); F24D 2200/123 (2013.01 - EP); F25B 2339/047 (2013.01 - EP); F25B 2600/01 (2013.01 - EP); F25B 2700/21161 (2013.01 - EP); F25B 2700/21171 (2013.01 - EP)
Designated contracting state (EPC)
AL 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 RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2940407 A1 20151104; EP 2940407 A4 20160525; EP 2940407 B1 20181114; ES 2710923 T3 20190429; JP 6190388 B2 20170830; JP WO2014102934 A1 20170112; WO 2014102934 A1 20140703
DOCDB simple family (application)
EP 12891024 A 20121226; ES 12891024 T 20121226; JP 2012083692 W 20121226; JP 2014553940 A 20121226