Drying and gas or vapor contact with solids – Apparatus – With automatic control
Patent
1996-03-11
1999-11-30
Gravini, Stephen
Drying and gas or vapor contact with solids
Apparatus
With automatic control
34531, 34174, 34175, F26B 1310
Patent
active
059920491
ABSTRACT:
A grain moisture regulating system includes a grain bin with a perforated grain supporting floor and a fan for blowing outside ambient air into the grain bin through the grain mass set thereupon, and through an air outlet at the top of the grain bin. A humidistat fan control system measures ambient moisture in the air outside the grain bin and compares it to ambient moisture in the air inside the grain bin for controlling the fan. A fan operation control system includes a plurality of moisture content sensors which measure ambient moisture in the air outside the grain bin and ambient moisture in the air above the grain mass in the grain bin to produce a signal for the humidistat fan control system. A computer operates to receive input signals from the fan operation control system, wherein a desired ambient moisture threshold level of the grain mass is set into the computer, and when the ambient moisture in outside air exceeds the desired ambient moisture threshold level of the grain mass, the humidistat fan control system stops fan operation, and in the other event, the humidistat fan control system will turn the fan on. Finally, a plurality of timers are included which are setable in timed increments for maintaining power to the fan and are further controlled by the computer for maintaining power to the fan as a function of the desired ambient moisture threshold level of the grain mass.
REFERENCES:
patent: 3503137 (1970-03-01), Wilson
patent: 3636638 (1972-01-01), Noyes
patent: 4035928 (1977-07-01), Sietmann et al.
patent: 5189812 (1993-03-01), Ediger
Gravini Stephen
Gravini Steve
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