Global Patent Index - EP 3217118 B1

EP 3217118 B1 20221005 - HEAT PUMP APPARATUS

Title (en)

HEAT PUMP APPARATUS

Title (de)

WÄRMEPUMPENVORRICHTUNG

Title (fr)

APPAREIL DE POMPE A CHALEUR

Publication

EP 3217118 B1 20221005 (EN)

Application

EP 16186105 A 20160829

Priority

JP 2016042968 A 20160307

Abstract (en)

[origin: EP3217118A1] Provided is a heat pump apparatus which can reduce the discharge temperature of a compressor and improve the reliability of the compressor, even at the time of heating operation under a high heating load, or at the time of cooling operation under a condition that outdoor air temperature is high. A control section 29 has a first refrigeration circuit discharge temperature suppression mode which reduces the degree of opening of second diaphragm means 18 so that the pressure of a second refrigerant in an evaporator 4 is not more than a predetermined value. Therefore, the high pressure-side pressure of the second refrigerant in the evaporator 4 can be reduced, and the amount of heat exchange between a first refrigerant and the second refrigerant in the evaporator 4 can be reduced. Thereby, the degree of superheat of the first refrigerant at the outlet of the evaporator 4 can be reduced, and the discharge temperature of a compressor 1 can be reduced.

IPC 8 full level

F25B 7/00 (2006.01); F25B 9/00 (2006.01); F25B 13/00 (2006.01)

CPC (source: CN EP)

F24D 3/18 (2013.01 - CN); F24D 17/02 (2013.01 - CN); F25B 7/00 (2013.01 - CN EP); F25B 9/008 (2013.01 - EP); F25B 13/00 (2013.01 - CN EP); F25B 29/003 (2013.01 - CN); F25B 40/00 (2013.01 - CN); F25B 41/39 (2021.01 - EP); F25B 2313/0231 (2013.01 - CN EP); F25B 2313/0272 (2013.01 - CN); F25B 2313/02741 (2013.01 - CN); F25B 2313/02791 (2013.01 - EP); F25B 2313/0314 (2013.01 - EP); F25B 2339/047 (2013.01 - CN); F25B 2400/06 (2013.01 - EP); F25B 2400/13 (2013.01 - CN); F25B 2400/23 (2013.01 - CN); F25B 2600/21 (2013.01 - EP); F25B 2600/2513 (2013.01 - EP); F25B 2700/1933 (2013.01 - EP); F25B 2700/197 (2013.01 - EP); F25B 2700/21151 (2013.01 - EP); F25B 2700/21152 (2013.01 - EP); F25B 2700/21175 (2013.01 - EP)

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 3217118 A1 20170913; EP 3217118 B1 20221005; CN 107166478 A 20170915; JP 2017161085 A 20170914

DOCDB simple family (application)

EP 16186105 A 20160829; CN 201610750733 A 20160829; JP 2016042968 A 20160307