EP 0881440 A3 19991006 - Control of evaporator defrosting in an air-operated heat pump unit
Title (en)
Control of evaporator defrosting in an air-operated heat pump unit
Title (de)
Verdampferabtausteuerung für ein Luftwärmepumpenaggregat
Title (fr)
Commande de dégivrage d'évaporateur pour une unité de pompe à chaleur à air
Publication
Application
Priority
IT MI971244 A 19970527
Abstract (en)
[origin: EP0881440A2] In a heat pump unit that uses a refrigeration cycle and operates between a cold source (Sf) consisting of ambient air and a hot source (Sc), evaporator defrosting is operated on the base of external air temperature (TL) and pressure (PE) and/or temperature (TE) of the coolant gas in the evaporator, as reference parameters <IMAGE>
IPC 1-7
IPC 8 full level
F25D 21/00 (2006.01)
CPC (source: EP)
F25D 21/002 (2013.01); F25B 2700/197 (2013.01); F25B 2700/2106 (2013.01); F25B 2700/2117 (2013.01)
Citation (search report)
- [XY] US 4573326 A 19860304 - SULFSTEDE LOUIS E [US], et al
- [XA] US 4563877 A 19860114 - HARNISH JAMES R [US]
- [XA] US 5507154 A 19960416 - GRANT CHARLES D [US]
- [XA] EP 0115799 A1 19840815 - NOVELERG SA [FR]
- [XA] EP 0285690 A1 19881012 - VIESSMANN WERKE KG [DE]
- [XA] DE 3227604 A1 19830224 - OLSBERG GES FUER PRODUKTION UN [DE]
- [X] DE 3229135 A1 19840209 - SIEMENS AG [DE]
- [A] DE 3110042 A1 19820930 - WAERMEPUMPEN UND ENERGIERUECKG [DE]
- [YA] PATENT ABSTRACTS OF JAPAN vol. 009, no. 272 (M - 425) 30 October 1985 (1985-10-30)
- [XA] PATENT ABSTRACTS OF JAPAN vol. 010, no. 281 (M - 520) 25 September 1986 (1986-09-25)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0881440 A2 19981202; EP 0881440 A3 19991006; IT 1292014 B1 19990125; IT MI971244 A0 19970527; IT MI971244 A1 19981127
DOCDB simple family (application)
EP 97119032 A 19971031; IT MI971244 A 19970527