EP 3339774 A1 20180627 - LIGHT BASED ICE DETECTION UNIT, REFRIGERATOR WITH ICE DETECTION UNIT AND METHOD FOR DEFROSTING OF A REFRIGERATOR
Title (en)
LIGHT BASED ICE DETECTION UNIT, REFRIGERATOR WITH ICE DETECTION UNIT AND METHOD FOR DEFROSTING OF A REFRIGERATOR
Title (de)
LICHTBASIERTE EISDETEKTIONSEINHEIT, KÜHLSCHRANK MIT EISDETEKTIONSEINHEIT UND VERFAHREN ZUM ABTAUEN EINES KÜHLSCHRANKES
Title (fr)
UNITÉ DE DÉTECTION DE GLACE À BASE DE LUMIÈRE, UNITÉ DE DÉTECTION DE GLACE POUR RÉFRIGÉRATEUR ET PROCÉDÉ DE DÉGIVRAGE D'UN RÉFRIGÉRATEUR
Publication
Application
Priority
EP 16206198 A 20161222
Abstract (en)
The before mentioned invention refers to an ice detection unit (1), at least comprising a light source (6) for emitting visible light (60), an optical means (62) for dividing said visible light (60) in multiple light beams (7.1-7.7), multiple detection means (8.1-8.7) for detecting light of said light beams (7.1-7.7) and for outputting of signals representing detected light, wherein refraction property changes of said optical means (62) are causing light path changes of the light paths of said multiple light beams (7.1-7.7), wherein refraction property changes are caused in dependency of the amount of ice on a surface of said optical means (62), wherein said signal output at least differs between a situation without ice on said surface of said optical means (62) and a situation with ice on said surface of said optical means (62).
IPC 8 full level
F25D 21/02 (2006.01)
CPC (source: EP)
F25D 21/02 (2013.01); F25B 2700/111 (2013.01)
Citation (applicant)
- US 4843830 A 19890704 - HAUL ROBERT W [US]
- WO 0009960 A2 20000224 - IMI CORNELIUS INC [US], et al
- US 3782130 A 19740101 - IRVINE J
- DE 2641600 A1 19780323 - STIEBEL ELTRON GMBH & CO KG
Citation (search report)
- [XI] JP 2007271168 A 20071018 - MITSUBISHI ELECTRIC CORP
- [XI] GB 2212913 A 19890802 - WASHINGTON ROBIN EDWARD CARMIC
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)
DOCDB simple family (application)
EP 16206198 A 20161222; TR 201702945 A 20170227