Food service unit including recirculating ventilation system and fire suppression system
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United States of America Patent
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Jul 19, 2016
Grant Date -
Jan 23, 2014
app pub date -
Mar 14, 2013
filing date -
Jul 23, 2012
priority date (Note) -
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Abstract
A food service unit for use with a cooking unit includes a food shield including an upper wall, a customer-side wall, and two lateral sidewalls, a ventilation volume defined at least in part by the food shield, a recirculating ventilation system including a filter, a fan downstream of the filter, and an exhaust vent, wherein the fan is configured to draw air from the ventilation volume through the filter and exhaust the air through the exhaust vent, a pressure sensor configured to detect a differential pressure between atmosphere and a location between the filter and the fan, a control system configured to prevent a cooking unit from operating when the detected differential pressure is outside a specified range of pressures, a fire suppression system including a nozzle and a source of fire extinguishing agent and a fire detection sensor configured to detect a fire and activate the fire suppression system.
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