Self-contained, pressure-activated cooling device

Details Self-contained, pressure-activated cooling device Self-contained, pressure-activated cooling device

F - Mech Eng,Light,Heat,Weapons

25

B

F25B 17/08 (2006.01) F25D 31/00 (2006.01)

Patent

CA 2376504

A self contained cooling apparatus (60) in a pressurized beverage container (10) includes an outer at least partially compressible housing (62, 103) which contains a liquid and is sealed by a diaphragm (66) and an inner breakable housing (64, 90) which contains a sorbent (29) mixed with a phase change material (29). When the container (10) is opened the pressure falls whereby the diaphragm (66) which was pushed inwardly returns and fractures the shell of the inner housing (64, 90) thereby exposing the sorbent (28) to the liquid which by evaporating cools the beverage. The diaphragm (66) can be kept in its pushed-in state by a torsionally twistable bridge (68), a dissolvable column (111) or a spring (115) held by a dissolvable latch (117).

L'invention concerne un dispositif (60) réfrigérant autonome placé dans un récipient (10) de boisson sous pression. Ce dispositif comprend une enveloppe (62, 103) externe partiellement compressible qui contient un liquide et qui est fermée par une membrane (66) et une enveloppe (64, 90) interne frangible qui contient un sorbant (29) mélangé à une matière (29) à changement de phase. L'ouverture du récipient (10) provoque une chute de pression et la membrane (66) qui était poussée à l'intérieur revient en arrière et rompt l'enveloppe (64, 90) interne, exposant le sorbant (28) au liquide, lequel s'évapore et refroidit ainsi la boisson. La membrane (66) peut être maintenue dans sa position enfoncée par un pont (68) déformable par torsion, une colonne (111) soluble ou un ressort (115) retenu par une attache (117) soluble.

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