Patent ID: 8099975

Claim:
An appliance comprising: a first storage compartment; a second storage compartment; a third storage compartment disposed in the second storage compartment; an ice forming device disposed in the third storage compartment and comprising an ice mold having a plurality of ice-forming cavities; a primary loop cooling system containing a first cooling medium and configured to directly cool the first storage compartment and the second storage compartment; and a secondary loop cooling system containing a second cooling medium, the first cooling medium and the second cooling medium being of different types, the secondary loop cooling system comprising: a first heat exchanger in thermal communication with the ice mold to reduce a temperature of the ice mold below a predetermined temperature; and a second heat exchanger in flow communication with the first heat exchanger, the second heat exchanger being in thermal communication with the primary loop cooling system so that the second cooling medium is cooled by the primary loop cooling system; the primary loop cooling system comprising a third heat exchanger in direct contact with the second cooling medium within the second heat exchanger.