EP 2980498 B1 20220907 - HEAT PUMP AND AIR CONDITIONER OR WATER HEATER HAVING THE SAME
Title (en)
HEAT PUMP AND AIR CONDITIONER OR WATER HEATER HAVING THE SAME
Title (de)
WÄRMEPUMPE UND KLIMAANLAGE ODER WASSERERHITZER DAMIT
Title (fr)
POMPE À CHALEUR ET CLIMATISEUR OU CHAUFFE-EAU ÉQUIPÉS DE CELLE-CI
Publication
Application
Priority
- EP 15180070 A 20080121
- EP 08703521 A 20080121
- JP 2008050671 W 20080121
Abstract (en)
[origin: EP2157380A1] A heat pump that can accurately detect a frost formation state on an evaporator without being affected by changes in an indoor environment and changes in a compressor frequency, and an air conditioner or water heater on which the heat pump is mounted are provided. In the heat pump having a refrigerant circuit in which a compressor 3, an indoor heat exchanger 8 (condenser), an expansion valve 5, and an outdoor heat exchanger 6 (evaporator) are sequentially connected, evaporator refrigerant saturation temperature detecting means 10 for detecting an evaporation temperature Te of the outdoor heat exchanger 6, evaporator sucked air temperature detecting means 11 for detecting an evaporator sucked air temperature Ta of the outdoor heat exchanger 6, compressor frequency detecting means 12 for detecting a compressor frequency f of the compressor 3, and frost formation state detecting means 103 for detecting a frost formation state on the outdoor heat exchanger 6 are provided, and the frost formation state detecting means 103 detects a drop in heat exchange performance caused by a frost formation on the outdoor heat exchanger 6 on the basis of a characteristic amount T1, which is a calculation value obtained by dividing a difference between the evaporator sucked air temperature Ta and the evaporation temperature Te by a compressor frequency f.
IPC 8 full level
F24F 11/00 (2018.01)
CPC (source: EP US)
F25B 47/025 (2013.01 - EP US); F25D 21/006 (2013.01 - EP); F24F 11/42 (2017.12 - EP US); F24F 2140/20 (2017.12 - EP US); F25B 2500/19 (2013.01 - EP); F25B 2600/23 (2013.01 - EP); F25B 2700/11 (2013.01 - EP); F25B 2700/171 (2013.01 - EP); F25B 2700/197 (2013.01 - EP); F25B 2700/2117 (2013.01 - EP); F25B 2700/21172 (2013.01 - EP)
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 MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2157380 A1 20100224; EP 2157380 A4 20150218; EP 2157380 B1 20191002; EP 2980497 A1 20160203; EP 2980497 B1 20220914; EP 2980498 A1 20160203; EP 2980498 B1 20220907; JP 5528119 B2 20140625; JP WO2009093297 A1 20110526; WO 2009093297 A1 20090730
DOCDB simple family (application)
EP 08703521 A 20080121; EP 15180055 A 20080121; EP 15180070 A 20080121; JP 2008050671 W 20080121; JP 2009550383 A 20080121