Drying and gas or vapor contact with solids – Apparatus – Houses – kilns – and containers
Patent
1978-06-19
1980-09-30
Favors, Edward G.
Drying and gas or vapor contact with solids
Apparatus
Houses, kilns, and containers
126 21A, F26B 2102
Patent
active
042247438
ABSTRACT:
A machine for dehydrating food, as an aid toward preservation of food for extended periods of time. Intake air may be obtained from either the exterior of the machine or a combination of exterior and recycled air. Intake air is electrically heated and pressurized in a plenum chamber by a fan. The pressurized and heated air is released in a uniform laminar flow through a set of small openings, then along horizontally disposed shelves containing the food to be dried. The air is then selectively discharged into the atmosphere or a portion thereof is recycled and combined with new intake air and again passed over the food to be dehydrated. The percentage of recycled air is selectively variable over a wide range. Removable frames support either solid sheets or screens having mesh openings of desired sizes which support the food to be dried. The choice of a solid sheet or the mesh size depends upon the type of food to be dried. The intake air is filtered and the electrical heater is temperature controlled by a thermister-triac combination or bi-metallic thermostat which senses the temperature within the plenum and controls the current flowing through the electrical heating element.
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Dornbush David A.
Erickson Chad S.
Alternative Pioneering Systems Inc.
Favors Edward G.
Friederichs Norman P.
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