Continuous microwave and vacuum dryer

Details Continuous microwave and vacuum dryer Continuous microwave and vacuum dryer

1975-12-03

1977-08-30

Grimley, Arthur T.

Electric heating

Metal heating

Of cylinders

219 1055M, H05B 906

Patent

active

040456390

ABSTRACT:
This invention relates to an apparatus, namely a continuous microwave and vacuum dryer, useful for evaporating a liquid from a liquid containing material by means of microwave and vacuum.
This apparatus, especially suitable for continuous dehydration of foodstuffs, comprises a housing forming a closed elongated space, means for evacuating said closed space, means for partitioning the closed space into two chambers which communicate through a slit provided in the partition, a conveyor belt disposed longitudinally in the two chambers, means for feeding on the conveyor belt a material to be evaporated, at least one source of microwave energy fed into the first one of the two chambers by at least one adjustable microwave cavity at atmospheric pressure through an air tight membrane provided on the first chamber.

REFERENCES:
patent: 3365562 (1968-01-01), Jeppson
patent: 3440383 (1969-04-01), Smith
patent: 3495648 (1970-02-01), Amadon
patent: 3507050 (1970-04-01), Smith et al.
patent: 3545093 (1970-12-01), Forster
patent: 3549848 (1970-12-01), Williams
patent: 3590202 (1971-06-01), Day et al.
patent: 3670132 (1972-06-01), Kaufman, Jr. et al.
patent: 3718082 (1971-04-01), Lipoma
patent: 3721013 (1973-03-01), Miller
patent: 3725628 (1971-10-01), Johnson
patent: 3731036 (1973-05-01), Hallier et al.
patent: 3746822 (1973-07-01), Le Viet
patent: 3780251 (1973-12-01), Kee
patent: 3834038 (1974-09-01), Janda

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