Title (en)

Heat pump apparatus and operation control method of heat pump apparatus

Title (de)

Wärmepumpenvorrichtung und Betriebssteuerungsverfahren einer Wärmepumpenvorrichtungen

Title (fr)

Appareil de pompe à chaleur et procédé de contrôle de fonctionnement de l'appareil de pompe à chaleur

Publication

EP 2375187 A2 20111012 (EN)

Application

EP 11001441 A 20110221

Priority

JP 2010041386 A 20100226

Abstract (en)

The present invention aims to prevent a refrigerant at a low temperature from being sent to a load-side heat exchanger during a defrost operation. At a time of a heat radiating operation, a switching mechanism 2 is controlled such that the refrigerant from a compressor 1 flows to a load-side heat exchanger 3, thereby causing the heat exchanger 3 to operate as a heat radiator and causing at least one of heat-source-side heat exchangers 5a and 5b to operate as an evaporator. At a time of the defrost operation of removing frost at the heat exchanger 5a, the switching mechanism 2 is controlled such that the refrigerant from the compressor 1 flows to the heat exchangers 3 and 5a, thereby causing the heat exchangers 3 and 5a to operate as heat radiators and causing the heat exchanger 5b to operate as an evaporator.

IPC 8 full level

F25B 13/00 (2006.01); F25B 41/04 (2006.01); F25B 47/02 (2006.01); F25B 49/00 (2006.01)

CPC (source: EP)

F25B 47/025 (2013.01); F25B 13/00 (2013.01); F25B 2313/0251 (2013.01); F25B 2313/0253 (2013.01); F25B 2313/0272 (2013.01)

Citation (applicant)

• JP H0519724 A 19930129 - SHARP KK
• JP S58102067 A 19830617 - MITSUBISHI ELECTRIC CORP

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

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 2375187 A2 20111012; EP 2375187 A3 20141217; EP 2375187 B1 20190918; JP 2011179692 A 20110915; JP 5404471 B2 20140129

DOCDB simple family (application)

EP 11001441 A 20110221; JP 2010041386 A 20100226