Improved pour-in-place water heater foam insulation systems

Details Improved pour-in-place water heater foam insulation systems Improved pour-in-place water heater foam insulation systems

F - Mech Eng,Light,Heat,Weapons

24

H

F24H 9/00 (2006.01) F16L 59/02 (2006.01) F24H 1/18 (2006.01) F24H 9/02 (2006.01)

Patent

CA 2247396

The present invention relates to water heater (12) construction whereby thermal insulation material is foamed in the clearance space between the tank and shell of the water heater, wherein the foamed insulation material has lesser uniformity in cell structure and density and a lesser or smaller density in the upper portion of the volume of foam which is disposed over the top of the inner water tank than in the lower portion of the volume of foam insulation material disposed around the side of the inner water tank. The present invention provides gas and electric water heaters with improved energy efficiency, utilizing a liquid, foam-in-place composite foam insulation system. The present invention further provides an improved method for insulating the annular clearance space between an inner water tank and an outer enclosure of a gas or electric water heater.

L'invention concerne une construction de chauffe-eau (12) consistant à placer une mousse d'isolation dans l'espace défini entre le réservoir et la coque du chauffe-eau. La mousse d'isolation présente une uniformité moindre en structure et densité cellulaire et une densité plus petite dans la partie supérieure du volume de la mousse qui est disposée sur le dessus du réservoir d'eau que dans la partie inférieure du volume de mousse d'isolation disposée tout autour du réservoir d'eau. La présente invention permet d'améliorer le rendement énergétique de chauffe-eau électrique et au gaz à l'aide d'un système isolant composite liquide transformé en mousse sur place. La présente invention concerne également un procédé amélioré permettant d'isoler l'espace annulaire vide entre le réservoir interne d'eau et une enceinte externe d'un chauffe-eau électrique ou au gaz.

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