Pulse systems and methods for detaching ice

Details Pulse systems and methods for detaching ice Pulse systems and methods for detaching ice

B - Operations, Transporting

64

D

B64D 15/12 (2006.01) F25C 5/08 (2006.01) F28F 17/00 (2006.01)

Patent

CA 2570986

A pulse electrothermal de-icing (~PETD~) system for detaching ice includes a power supply (22) for applying a high-power heating pulse to the interface between ice and an object such as a cold plate of an ice making system, an ice- container, a heat-exchanger, a refrigerator surface or an airplane wing. Pulse heating may be generated within a metal foil or resistive film disposed upon an object to be deiced, or a capillary tube proximate the object to be deiced. An interfacial layer of ice is melted and the ice is released from the object. A force, for example gravity, pressure of vaporization or mechanical scraping, removes the ice from the object.

Un système à impulsion permettant de détacher la glace comprenant une alimentation permettant d'appliquer une impulsion chauffante haute puissance à l'interface entre la glace et l'objet, notamment une plaque froide d'un système fabriquant de la glace, d'un conteneur de glace, d'un échangeur thermique, d'une surface refroidissante ou de l'aide d'un aéronef. Le chauffage par impulsion peut être généré dans une tôle mécanique ou un film résistif se trouvant sur un objet à déglacer, ou un tube capillaire à proximité de l'objet à déglacer. Une couche d'interface de glaçon fond et le glaçon est libéré de l'objet. Une force, notamment la gravité, la pression de vaporisation ou le grattage mécanique, permet de retirer le glaçon de l'objet.

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