Method and apparatus for drying or heat-treating products
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United States of America Patent
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Oct 2, 2001
Grant Date -
N/A
app pub date -
Feb 3, 1999
filing date -
Feb 4, 1998
priority date (Note) -
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Abstract
The invention relates to a method and an apparatus for drying or heat-treating substances or products at a pressure other than atmospheric pressure. The invention relates furthermore to banana chips dried by means of this method and banana powder produced therefrom. For drying or heat-treating, the products to be treated are loaded in transport receptacles which are subsequently charged via charging lock chambers into a treatment chamber and discharged therefrom via discharging lock chambers. For drying or heat-treating, at least one microwave source is provided in the treatment chamber. Furthermore an infrared heating source may be provided. After heat-treating or drying a resting period may be scheduled. More particularly for this purpose a vertically oriented conveying system is provided in the treatment chamber when a longish resting period is involved. The transport receptacle is configured dished and may comprise nets on which the products are applied. The method is employed preferably for drying or heat-treating basic food materials, e.g. for food products or medicinal drugs.
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