Patent ID: 6158143
Filing Date: 2000-12-12
Classification: F26B

Abstract:
An oblique cross grain dryer comprising a modulated lower level internal drying chamber, wherein heated air flows upward inside said lower level modulated internal drying chamber; a horizontal plate which separates said modulated lower level internal drying chamber from a modulated middle level internal preheating chamber and which deflects air flow upwardly through a multi-perforated chamber, said perforated chamber passing grains through downwardly and heated air cross-upwardly in an S-shape and said multi-perforated chamber surrounding said modulated lower level internal drying chamber, said modulated middle level preheating chamber and a modulated upper level preheating chamber; an intermediate air passage wherein said heated air from said multi-perforated chamber is deflected upwardly into said modulated middle level internal preheating chamber by passing through said multi-perforated chamber, holding said grains; said modulated upper level internal preheating chamber being separated from said modular middle level internal preheating chamber by a horizontal plate with a set of central fans, wherein said set of central fans creates an area of low pressure in said modulated lower level internal drying chamber causing said heated air to flow upward inside said grain dryer; and an external chamber in which said heated air is exhausted from said modulated upper level internal preheating chamber to the ambient in a downward direction minimizing heat loss from said modulated lower level internal drying chamber, said modulated middle level internal preheating chamber and said modulated upper level internal preheating chambers, and thereby increasing the efficiency of moisture exchange between grains and air.