Patent ID: 6715309
Filing Date: 2004-04-06
Classification: A42B,F25D

Abstract:
A cooling apparatus which comprises:a base unit which includes an insulated container that provides a refrigerant chamber therein, a helmet which defines an outlet opening and which includes a fan therein for creating air flowing out of said outlet opening, and a closed coolant circulation system for transferring coolness from refrigerant in said refrigerant chamber to the air flowing out of said helmet, said closed coolant circulation system comprising a first tube coil in said refrigerant chamber a second tube coil in said helmet between said fan and said outlet opening, said second tube coil being helical; first and second connecting tubes extending between said base unit and said helmet; and a pump for circulating liquid coolant through said first tube coil so as to be cooled by refrigerant in said refrigerant chamber, then through said first connecting tube to said second tube coil in said helmet so as to cool air flowing from said fan past said second tube coil, and then through said second connecting tube back to said base unit.