EP 1972871 B1 20160928 - Hot water system
Title (en)
Hot water system
Title (de)
Heißwassersystem
Title (fr)
Système de fourniture d'eau chaude
Publication
Application
Priority
JP 2007070995 A 20070319
Abstract (en)
[origin: EP1972871A2] A hot water system includes: a compressor (1) with variable operation capacity; a four-way valve (2) for switching the direction of the refrigerating cycle; a plate heat exchanger (10) for exchanging heat between water and a refrigerant; an electronic expansion valve (6) for controlling the flow rate of the refrigerant to reduce the pressure; and a heat exchanger (9) for exchanging heat between air and the refrigerant, which are connected in that order by a pipeline (3) to form a refrigerating cycle for circulating the refrigerant, thereby heating water. The hot water system further includes; pressure detection means (Pd) disposed between the outlet of the compressor (1) and the two-way valve (2), for detecting the pressure of the refrigerant discharged from the compressor (1), wherein the speed of operation of the compressor (1) is controlled according to the difference between the condensing temperature calculated from the pressure detected by the pressure detection means (Pd) and a target condensing temperature.
IPC 8 full level
F25B 49/02 (2006.01); F25B 13/00 (2006.01)
CPC (source: EP US)
F24D 19/1054 (2013.01 - EP US); F24H 15/227 (2022.01 - EP US); F24H 15/242 (2022.01 - EP US); F24H 15/38 (2022.01 - EP US); F24H 15/385 (2022.01 - EP US); F25B 41/39 (2021.01 - EP); F25B 49/027 (2013.01 - EP); F25B 13/00 (2013.01 - EP); F25B 2313/02741 (2013.01 - EP); F25B 2339/047 (2013.01 - EP); F25B 2500/19 (2013.01 - EP); F25B 2600/025 (2013.01 - EP); F25B 2600/19 (2013.01 - EP); F25B 2600/21 (2013.01 - EP); F25B 2600/2513 (2013.01 - EP); F25B 2700/1931 (2013.01 - EP); F25B 2700/21152 (2013.01 - EP); F25B 2700/21163 (2013.01 - EP)
Designated contracting state (EPC)
FR GB
DOCDB simple family (publication)
EP 1972871 A2 20080924; EP 1972871 A3 20150902; EP 1972871 B1 20160928; JP 2008232508 A 20081002
DOCDB simple family (application)
EP 07254438 A 20071113; JP 2007070995 A 20070319