Mixed-flow grain dryer with cross-flow vacuum cool heat recovery system
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United States of America Patent
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Sep 8, 2020
Grant Date -
Jun 6, 2019
app pub date -
Jan 25, 2019
filing date -
Apr 18, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An improved grain dryer is presented having a mixed-flow heating section having a plurality of inlet ducts connected to the plenum that facilitate air flow into the grain column from the heated and pressurized heat plenum, and a plurality of exhaust ducts connected to openings in the exterior wall that facilitate air flow out of the grain column. A tempering section is positioned below the heating section and includes solid walls that reduce air flow through the grain column. A cooling section is positioned below the tempering section and includes perforated walls that facilitate air flow through the grain column and into the plenum. In use, heated air is forced outward through the mixed-flow heating section heating and drying the grain and air is pulled through the cross-flow cooling section cooling the grain. Air pulled through the cross-flow cooling section is recycled into the mixed-flow heating section thereby recycling heat.
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