Control system and method for high density universal holding cabinet
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United States of America Patent
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May 28, 2013
Grant Date -
Oct 20, 2011
app pub date -
Apr 16, 2010
filing date -
Apr 16, 2010
priority date (Note) -
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Abstract
A load control system and method of time multiplexing power to a plurality of holding shelves in a food holding cabinet to allow total cabinet power to be limited to electrical distribution capabilities. This method allows for individual shelf heaters to be utilized normally to maintain food temperatures during normal use and modulates power when multiple shelves demand heating that would normally exceed branch circuit capabilities thus tripping the breaker. The system monitors temperature of each shelf and based upon demand executes a logical demand schedule for each shelf heater output (time multiplexing or modulating AC power to each) such that total system demand does not exceed available power to the system.
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