Defrosting device, in particular for refrigeration systems

Details Defrosting device, in particular for refrigeration systems Defrosting device, in particular for refrigeration systems

F - Mech Eng,Light,Heat,Weapons

25

D

F25D 21/02 (2006.01)

Patent

CA 2323868

A device for defrosting the finned cooling assembly (17) of a refrigeration system, characterised by comprising: an ellipsoid (2, 26) of transparent polymer materiel housing a light source (6, 32) positioned substantially in correspondences with one of the focal points, and a sensor (12, 30) for the light beam radiated by said source and reflected by the inner surface of the ellipsoid, a plurality of heating and defrosting elements (18) for the finned cooling assembly (17), which are activated by a signal emitted by the sensor (12, 30) when this senses a variation in the luminous intensity of the beam, said variation in luminous intensity of the beam being caused by the formation of frost along the path of the light beam.

La présente invention concerne un dispositif de dégivrage de l'ensemble de refroidissement à ailette (17) d'un système de réfrigération, caractérisé en ce qu'il contient: (a) un ellipsoïde (2, 26) en matière polymère transparente contenant une source lumineuse (6, 32) placée sensiblement en correspondances avec un des points focaux, et un détecteur (12, 30) de faisceaux lumineux émis par ladite source et réfléchis sur la surface interne de l'ellipsoïde, (b) plusieurs éléments de chauffage et de dégivrage (18) conçus pour l'ensemble de refroidissement (17), qui sont activés par un signal émis par un détecteur (12, 30) lorsqu'il détecte une variation de l'intensité lumineuse d'un faisceau, provoquée par la formation de gel le long du trajet du faisceau lumineux.

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