Actuating device for self cooling packaging

F - Mech Eng,Light,Heat,Weapons – 25 – B

Patent

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Details

F25B 17/08 (2006.01) F16K 15/02 (2006.01) F16K 15/18 (2006.01) F25D 31/00 (2006.01)

Patent

CA 2555310

A self-cooling packaging comprises a cavity forming a heat exchanger (20) and containing a refrigerant liquid and the vapour thereof and a cavity forming an adsorption chamber (30) for pumping of said vapour. The packaging also includes connection means (40) provided in a common wall (25) of said cavities (20, 30), said connection means comprising a check valve (42), and actuating means (45) disposed on the side of the adsorption chamber cavity (30) and adapted to open the check valve (42) to an initial position inside the heat exchanger cavity (20). The packaging further comprise spring means (43), the check valve (42) being adapted to progressively reach a fully open position under the action of said spring means (43). The invention makes it possible to realise a progressive opening of the check valve inside the heat exchanger cavity.

L'invention concerne un emballage à auto-refroidissement comprenant une cavité formant un échangeur thermique (20) et contenant un liquide réfrigérant et la vapeur émise par ledit liquide, et une cavité formant une chambre d'adsorption (30) destinée à pomper la vapeur. Cet emballage comporte également un moyen raccord (40) disposé dans une paroi commune (25) auxdites cavités (20, 30), ledit moyen raccord comprenant un clapet de non-retour (42), et un moyen d'actionnement (45) disposé sur le côté de la cavité de chambre d'adsorption (30) et conçu pour ouvrir le clapet de non-retour (42) et le mettre en position initiale à l'intérieur de la cavité de l'échangeur thermique (20). L'emballage selon l'invention comprend également un moyen ressort (43), le clapet de non-retour (42) étant conçu pour atteindre progressivement une position totalement ouverte, sous l'action dudit moyen ressort (43). L'invention permet également d'obtenir une ouverture progressive du clapet de non-retour à l'intérieur de la cavité d'échangeur thermique.

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