DUCT GREASE DEPOSIT DETECTION DEVICES, SYSTEMS, AND METHODS
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United States of America Patent
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N/A
Issued Date -
Oct 30, 2014
app pub date -
Jul 7, 2014
filing date -
Jun 13, 2007
priority date (Note) -
Abandoned
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Abstract
Automatic devices that determine when pollutant deposits have accumulated in ductwork may be employed to notify maintenance personnel or automated cleaning equipment of the need for ducts to cleaned or replaced. Various detection devices may be employed to detect a property of accumulated grease and generate an indication of an accumulation. The detection device may present a surface to the fume stream inside a duct. The surface may be cooled to a temperature that represents a worst case temperature so that the accumulation due to condensation on the detector surface is at least as high as the coolest surface in the ductwork which is being monitored. Alternatively, the detection device may be located external to the duct. The detection device may interrogate the surface of the duct through contact or noncontact measurements to determine the thickness of an accumulated grease layer on the interior of the duct.
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