EP 3431896 B1 20191106 - HEAT PUMP HOT WATER SUPPLIER
Title (en)
HEAT PUMP HOT WATER SUPPLIER
Title (de)
WARMWASSERZUFÜHRER FÜR WÄRMEPUMPE
Title (fr)
DISTRIBUTEUR D'EAU CHAUDE À POMPE À CHALEUR
Publication
Application
Priority
JP 2016058439 W 20160317
Abstract (en)
[origin: EP3431896A1] Provided is a heat pump water heater apparatus having a water circuit and a refrigerant circuit thermally connected through a first heat exchanger, the refrigerant circuit circulating carbon dioxide, the first heat exchanger being configured to exchange heat between the water and the carbon dioxide, the refrigerant circuit including a compressor, a refrigerant passage of the first heat exchanger, an expansion valve, and a second heat exchanger, the water circuit including a water passage of the first heat exchanger and a tank, the heat pump water heater apparatus including: a first sensor configured to detect a temperature of the carbon dioxide discharged from the compressor, a second sensor configured to detect a temperature of the water flowing into the water passage; and a third sensor configured to detect a temperature of the water flowing out of the water passage; the expansion valve being opened to have an opening degree to reduce a difference between a first value and a target value, the first value being a difference between a temperature detected by the third sensor and a temperature detected by the first sensor, the target value being determined to be smaller in a case where the temperature detected by the second sensor is a first temperature, than in a case of a second temperature, the second temperature being lower than the first temperature.
IPC 8 full level
F24H 4/02 (2006.01)
CPC (source: EP)
F24D 17/02 (2013.01); F24D 19/1054 (2013.01); F24H 15/174 (2022.01); F24H 15/215 (2022.01); F24H 15/219 (2022.01); F24H 15/232 (2022.01); F24H 15/258 (2022.01); F24H 15/34 (2022.01); F24H 15/38 (2022.01); F24H 15/385 (2022.01); F25B 9/008 (2013.01); F25B 25/005 (2013.01); F25B 30/02 (2013.01); F25B 49/022 (2013.01); F24D 2220/042 (2013.01); F25B 2339/047 (2013.01); F25B 2600/021 (2013.01); F25B 2600/13 (2013.01); F25B 2600/2513 (2013.01); F25B 2700/2106 (2013.01); F25B 2700/21152 (2013.01); F25B 2700/21161 (2013.01)
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
DOCDB simple family (publication)
EP 3431896 A1 20190123; EP 3431896 A4 20190327; EP 3431896 B1 20191106; JP 6537703 B2 20190703; JP WO2017158782 A1 20180927; WO 2017158782 A1 20170921
DOCDB simple family (application)
EP 16894400 A 20160317; JP 2016058439 W 20160317; JP 2018505157 A 20160317