EP 1967801 B1 20170726 - Hot water system
Title (en)
Hot water system
Title (de)
Heißwassersystem
Title (fr)
Système de fourniture d'eau chaude
Publication
Application
Priority
JP 2007060238 A 20070309
Abstract (en)
[origin: EP1967801A2] A hot water system includes: a compressor (1); a four-way valve (2) for switching the direction of the refrigerating cycle during defrosting operation; a water heat exchanger (3) for transferring heat between water and the refrigerant; an electronic expansion valve (4) for controlling the flow rate of the refrigerant to reduce the pressure; and an air heat exchanger (5) for transferring heat between air and the refrigerant, which are connected in that order by a pipeline (7) to form a refrigerating cycle to heat the water. The hot water system further includes; a bypath (8) for redirecting the refrigerant from a portion of the pipeline (7) in upstream of the electronic expansion valve (4) to the inlet of the compressor (1) during defrosting operation; and a solenoid valve (9) for switching installed in the bypath (8). When the solenoid valve (9) is opened to redirect part of the refrigerant to pass through the water heat exchanger (3) acting as an evaporator to the bypath (8) during defrosting operation, the amount of the refrigerant to pass through the bypath (8) is controlled by changing the degree of opening of the electronic expansion Valve (4).
IPC 8 full level
F25B 47/02 (2006.01)
CPC (source: EP)
F24D 17/02 (2013.01); F25B 47/025 (2013.01); F25B 2339/047 (2013.01); F25B 2600/2513 (2013.01)
Designated contracting state (EPC)
DE FR GB SE
DOCDB simple family (publication)
EP 1967801 A2 20080910; EP 1967801 A3 20140924; EP 1967801 B1 20170726; JP 2008224088 A 20080925; JP 4974714 B2 20120711
DOCDB simple family (application)
EP 07254439 A 20071113; JP 2007060238 A 20070309