EP 2375195 B1 20190515 - HEAT PUMP TYPE WATER HEATER
Title (en)
HEAT PUMP TYPE WATER HEATER
Title (de)
WÄRMEPUMPENDURCHLAUFERHITZER
Title (fr)
CHAUFFE-EAU DU TYPE POMPE A CHALEUR
Publication
Application
Priority
- JP 2009061944 W 20090630
- JP 2009000180 A 20090105
Abstract (en)
[origin: EP2375195A1] A heat pump water heater in which the number of components is small, a measure against drain pan freezing is realized with a simple structure, and a drain reservoir is difficult to be generated in the drain pan is obtained. This heat pump water heater is provided with a refrigerating cycle in which a compressor 1, a four-way valve 2 that switches a flow direction of a refrigerant, a water heat exchanger 3 that exchanges heat between the refrigerant and water, an expansion valve 4 that adjusts and decompresses a flow rate of the refrigerant, and an air heat exchanger 5 that exchanges heat between air and the refrigerant are connected sequentially by a refrigerant pipeline, a water circuit in which the water heat exchanger 3, a hot water tank 7 which reserves water heated by the water heat exchanger 3, and a pump 11 are connected sequentially, and a three-way valve 12 disposed between the pump 11 and the water heat exchanger 3 so that a water circuit flows to a lower-stage path 5a of the air heat exchanger and returns to the water heat exchanger 3, and a control portion that switches the three-way valve 12 of the water circuit so that high-temperature water in the hot water tank flows to the lower-stage path 5a of the air heat exchanger during defrosting operation is disposed.
IPC 8 full level
F25B 47/02 (2006.01); F24H 4/04 (2006.01); F25B 30/02 (2006.01); F25B 47/00 (2006.01); F28F 17/00 (2006.01)
CPC (source: EP US)
F24H 4/04 (2013.01 - EP US); F25B 30/02 (2013.01 - EP US); F25B 47/006 (2013.01 - EP US); F25B 47/022 (2013.01 - EP US); F25B 2339/047 (2013.01 - EP US)
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 2375195 A1 20111012; EP 2375195 A4 20160824; EP 2375195 B1 20190515; JP 2010156523 A 20100715; JP 5713536 B2 20150507; US 2011214444 A1 20110908; WO 2010076858 A1 20100708
DOCDB simple family (application)
EP 09836198 A 20090630; JP 2009000180 A 20090105; JP 2009061944 W 20090630; US 200913127345 A 20090630