Abstract: A cooling apparatus includes a base unit in the form of an insulated tank that defines a refrigerant chamber therein for refrigerant, a discharge unit for discharging a flow of air, and a closed circulation system for transferring coolness from the refrigerant in the refrigerant chamber to the air flow in the discharge unit, the circulation system including a first tube coil in the refrigerant chamber, and second tube coil in the discharge unit, a pump, and hoses for conveying coolant from the first tube coil to the second tube coil and back to the pump. The base unit can be harnessed to a user as a backpack and the discharge unit can be a helmet worn by the user, the hoses connected therebetween being flexible. The refrigerant supplied to the refrigerant chamber can be ice and the coolant flowing through the closed circulation system can be water.

Abstract: A cooling apparatus includes a base unit in the form of an insulated tank that defines a refrigerant chamber therein for refrigerant, a discharge unit for discharging a flow of air, and a closed circulation system for transferring coolness from the refrigerant in the refrigerant chamber to the air flow in the discharge unit, the circulation system including a first tube coil in the refrigerant chamber, and second tube coil in the discharge unit, a pump, and hoses for conveying coolant from the first tube coil to the second tube coil and back to the pump. The base unit can be harnessed to a user as a backpack and the discharge unit can be a helmet worn by the user, the hoses connected therebetween being flexible. The refrigerant supplied to the refrigerant chamber can be ice and the coolant flowing through the closed circulation system can be water.