CONTROL SYSTEM AND METHOD FOR CONTROLLING AN AIR HANDLING FAN FOR A VENT HOOD
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United States of America Patent
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Issued Date -
Feb 19, 2009
app pub date -
Aug 15, 2008
filing date -
Aug 17, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system and method of controlling a variable speed air handling fan for a vent hood includes a temperature sensor and a processor. Speed setpoints and a deadband range are received from a user by the processor. The processor computes deadband setpoints and receives a temperature from the temperature sensor. The processor is in communication with a motor controller for controlling the speed of the fan. The processor changes the speed of the fan when the temperature rises above a certain setpoint. However, the processor will not change the speed of the fan back to its previous speed until the temperature falls below the deadband setpoint that corresponds to the certain setpoint.
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