Portable unit for heating packaged food

Electric heating – Heating devices – Combined with container – enclosure – or support for material...

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Details

219386, 34191, 34196, 34215, 126 21A, F24C 1532, A21B 122

Patent

active

044554788

ABSTRACT:
A portable unit for heating packages containing pre-cooked cold food, the unit acting to rapidly heat up the food to a service temperature level and to thereafter maintain this level. The unit includes a case having a rack therein divided by shelves into a series of compartments, each adapted to receive a food package. Standing vertically behind the rack is an air modulator including a stationary outer tube having a series of longitudinally-aligned ports communicating with the respective compartments. Rotating within the outer tube is an inner tube having a series of angularly-displaced holes which successively register with the ports in the course of a rotary cycle. Air drawn from the free region in the front of the rack is conveyed through a heater station and from there blown into the inner tube to create a pressure differential between the free region and the inner tube. As a consequence, the heated air is projected successively through the ports into the compartments whereby the heated air flowing at high velocity through each compartment has a pulsatory waveform which acts to rapidly heat the food therein.

REFERENCES:
patent: 1527020 (1925-02-01), Valliant
patent: 2715898 (1955-08-01), Michaelis
patent: 3221729 (1965-12-01), Beasley
patent: 3232072 (1966-02-01), Barroero
patent: 3335499 (1967-08-01), Larsson
patent: 4038968 (1977-08-01), Rovell
patent: 4307286 (1981-12-01), Guibert
patent: 4374319 (1983-02-01), Guibert

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