Portable thermoelectric refrigerator with an internal thermal sink

Abstract From the Canadian patent

A portable refrigerator unit is cooled by a thermoelectric element of the Peltier type, having hot and cold faces adapted to be energized by an external DC source, which can be disconnected from the unit to make the unit entirely portable. The thermoelectric unit has a cold face in contact with an internal thermal sink, which in turn is in contact with a heat conducting lining and its hot face in contact with an external thermal sink having, heat dissipating means associated therewith. The internal thermal sink has a large portion imbedded in an insulated wall of the unit and a relatively small portion having a face free of the insulating material,which free face is in heat-transfer contact …