Method and apparatus for microwave utilization
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United States of America Patent
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Sep 16, 2003
Grant Date -
Apr 25, 2002
app pub date -
Aug 15, 2001
filing date -
Aug 16, 2000
priority date (Note) -
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Abstract
The invention described herein pertain generally to a process for drying and/or pathogen reduction as well as an apparatus effective for the same, the process comprising the steps of feeding a sample containing water onto a mesh conveyor belt; transporting the sample into a heated chamber having an air flow about, around and through the sample; exposing said sample to at least two sources of microwaves in non-parallel alignment to each other; and collecting the sample. The at least two sources of microwaves are from a split waveguide assembly, producing microwaves which are essentially 90.degree. out of phase to each other. The heated chamber is between approximately 75.degree. C. and 125.degree. C. The convection heating supplements the microwave heating thereby both heating the sample from the outside in and also from the inside out. The microwave frequency is between 915 MHz and 1000 MHz, preferably approximately 915 MHz.
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