Self cooling and self heating disposable beverage cans

Details Self cooling and self heating disposable beverage cans Self cooling and self heating disposable beverage cans

1986-12-12

1988-04-12

King, Lloyd L.

Refrigeration

Container cutter or punch-type opening means

62 4, 62457, 62480, 62530, 126263, B67D 562

Patent

active

047365994

ABSTRACT:
The temperature changers consist of at least 2 communicating chambers. One chamber contains a partial air vacuum which lowers the boiling point of water present in the chamber. A second chamber contains a dessicant which adsorbs or absorbs the vapor generated by the boiling water in the water chamber. Inner support bodies between the walls of the chambers prevent the walls of the chambers from collapsing during the presence of the vacuum inside the chambers. Pores and channels inside the support body provide inter-communicating free spaces inside the chambers. In the present invention the heat exchange surfaces of the chambers are structurally adapted to be completely immersed in a beverage to increase the heat transfer actions of the surfaces. In a modified form of the invention multiple dessicant chambers with separate communications with the water chamber are used. A serial opening of the communications between the water chamber and the multiple dessicant chambers causes multiple vigorous boiling periods of the water, and lowers the final temperature of the beverage.

REFERENCES:
patent: 3091091 (1963-05-01), Ferrante
patent: 3309890 (1967-03-01), Barnett et al.
patent: 3636726 (1972-01-01), Rosenfeld et al.
patent: 3852975 (1974-12-01), Beck
patent: 4054037 (1977-10-01), Yoder
patent: 4126016 (1978-11-01), Greiner
patent: 4250720 (1981-02-01), Siegel
patent: 4462224 (1984-07-01), Dunshee et al.
patent: 4628703 (1986-12-01), Kim

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