EP 2320158 A4 20140507 - HEAT PUMP SYSTEM
Title (en)
HEAT PUMP SYSTEM
Title (de)
WÄRMEPUMPENSYSTEM
Title (fr)
SYSTÈME DE POMPE À CHALEUR
Publication
Application
Priority
- JP 2009062469 W 20090708
- US 8406508 P 20080728
Abstract (en)
[origin: EP2320158A1] Disclosed is a heat pump system comprising a heat source cycle (A) and an NH3 secondary coolant cycle (B). The heat cycle (A) includes a compressor (1), a condenser (2), an expansion means (3) and a cascade condenser (endothermic unit) (4), and employs an NH3 coolant as a heat source. The NH3 secondary coolant cycle (B) is connected to the heat source cycle (A), and cools an object load with an NH3 secondary coolant, which is heat-absorbed by the cascade condenser (4) of the heat source cycle (A) so that the coolant is condensed. The NH3 secondary coolant cycle (B) includes the cascade condenser (4), which is heat-absorbed by the cascade condenser (4) of the heat source cycle (A) so that the NH3 secondary coolant is condensed, an evaporator (8) for cooling the object coolant with the NH3 secondary coolant condensed in the cascade condenser (4), a head difference unit (H) and a circulating pump (6) arranged between the cascade condenser (4) and the evaporator (8) so as to circulate the NH3 secondary coolant, a bypass conduit for bypassing the circulating pump (6), and a flow control valve (5) arranged in the bypass conduit.
IPC 8 full level
F25B 25/00 (2006.01); F25B 9/00 (2006.01)
CPC (source: EP)
F25B 9/002 (2013.01); F25B 25/005 (2013.01); F25B 2400/04 (2013.01); F25B 2500/01 (2013.01)
Citation (search report)
- [Y] JP 2005030622 A 20050203 - MAEKAWA SEISAKUSHO KK
- [Y] WO 2006038354 A1 20060413 - MAEKAWA SEISAKUSHO KK [JP], et al
- [A] JP 2006214611 A 20060817 - NISSIN KOGYO KK
- [A] JP H0539963 A 19930219 - SANKI ENG CO LTD
- See references of WO 2010013590A1
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 SM TR
DOCDB simple family (publication)
EP 2320158 A1 20110511; EP 2320158 A4 20140507; EP 2320158 B1 20171115; JP 5246891 B2 20130724; JP WO2010013590 A1 20120112; NO 2320158 T3 20180414; WO 2010013590 A1 20100204
DOCDB simple family (application)
EP 09802833 A 20090708; JP 2009062469 W 20090708; JP 2010522670 A 20090708; NO 09802833 A 20090708