Patent ID: 6829902
Filing Date: 2004-12-14
Classification: B65D,F25B,F25D

Abstract:
A self cooling can comprising:a cylindrical can body for beverage product; an evaporator within the can body for removing heat from beverage product surrounding the evaporator, the evaporator comprising an annular component having an inner and outer wall with a gap between the walls, the curled edge of the outer wall being clipped onto a ridge on the inside chine wall of the base of the can body to form a sealed unit which holds a high vacuum and is isolated from beverage product; an absorber unit fixed to the outside of the can body and including a first desiccant region and a second region containing heat sink material, either the desiccant region or the second region of the absorber unit comprising an absorber element having one or more pockets for the desiccant or heat sink material respectively; and means for providing a vapor path from the evaporator to the absorber unit such that, in use, when the vapor path is opened, vapor passes from the evaporator to the desiccant region of the absorber unit, the vapor being absorbed by the desiccant and heat from the vapor and/or the reaction of the desiccant being removed by the heat sink material, thereby cooling product around the evaporator.