Refrigeration – Using electrical or magnetic effect – Thermoelectric; e.g. – peltier effect
Patent
1997-02-25
1998-07-21
Doerrler, William
Refrigeration
Using electrical or magnetic effect
Thermoelectric; e.g., peltier effect
624579, F25B 2102
Patent
active
057820945
ABSTRACT:
A refrigerated countertop snack container that can be styled in the form of a lidded cookie jar utilizes a Peltier effect thermoelectric element as the cooling module located beneath the main interior compartment formed by a hygienic thermally-conductive liner that is thermally insulated from the container's outer shell and is held at 38.degree. F. nominal for optimal food refrigeration. The liner is specially designed with tapered thickness to minimize bottom-to-top temperature difference. Heat generated by the refrigeration process is dissipated from a finned aluminum heat sink that is cooled by forced air from a quiet "muffin" fan drawing in air from a first set of air vent openings configured around a lower region of the container, and exhausting air, warmed by the heat sink and fan motor, through a second set of air vents located above the first set. A high frequency type switching power converter located in the bottom region of the container converts 115 volts a.c. from the domestic power line to about 12 volts d.c. to power the thermoelectric element and the fan, and provides electrical isolation from the power line.
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patent: 5661979 (1997-09-01), DeBoer
Doerrler William
McTaggart J. E.
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