Refrigeration – Chemical reaction or solids dissolving
Patent
1992-08-10
1993-08-10
Capossela, Ronald C.
Refrigeration
Chemical reaction or solids dissolving
126263, 16510412, F25D 500
Patent
active
052338363
ABSTRACT:
A self cooling insert consists of an air evacuated heat-exchange chamber containing water. The water boils at low temperatures and cools the chamber. The cold heat-exchange chamber is then dipped in a beverage to absorb heat from the beverage. The vapor generated by the low boiling point liquid is removed through sorption by a desiccant placed in a separate chamber, on top of the heat exchange chamber. A pipe communicates between the vapor phase of the heat-exchange chamber and the desiccant chamber. A vapor distributor tube in the desiccant chamber conducts the vapor to the top surfaces of the desiccant. The temperature changing potential of the device can be preserved indefinitely by a barrier which blocks the communication between the chambers. The barrier is mechanically linked to a magnet inside the insert. The inside magnet is manipulated by an outside magnet placed in proximity to surface of the insert. The barrier is kept in its blocking position by a force of attraction between the magnets. The temperature changer is activated by turning the outside magnet upside-down, a fact which changes the attractive force between the magnets to a repulsive force.
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