Cooking exhaust hood ventilation system and related methods

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9958168
SERIAL NO

14166060

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Controlling an exhaust hood system having multiple hood sections each with an exhaust output having an associated damper, each exhaust output feeding to a common downstream fan, where damper position and fan speed control an exhaust flow rate through each hood section, involves monitoring at least one condition of each hood section and, based upon the monitoring, establishing a target flow rate for each hood section; based upon a sum of the target flow rates, establishing a fan speed; and monitoring an actual flow rate through each hood section and responsively controlling damper position to achieve the target flow rate for the hood section. Adjusting fan speed and damper position until damper position for at least one hood section achieves a predetermined open position, while at the same time each hood section satisfies its associated target flow rate, can reduce energy costs associated with system operation.

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Patent Owner(s)

Patent OwnerAddress
ILLINOIS TOOL WORKS INC155 HARLEM AVENUE GLENVIEW IL 60025

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Borntrager, Michael Mayer, US 4 34
Lukens, Bruce Newberg, US 6 36
Robison, Russell Yamhill, US 14 89

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