Purge and pressurization system with feedback control
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United States of America Patent
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May 12, 2020
Grant Date -
Nov 5, 2015
app pub date -
May 5, 2014
filing date -
May 5, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
An air purge and pressurization system that utilizes a variable speed fan and a feedback loop to optimize system operation is described herein. In one embodiment, such a system can include an enclosed container located in an area classified as hazardous, a controller rated for operation within the hazardous area, and a pressure sensor located within the container and coupled to the controller. The system can also include a variable-speed fan located outside the hazardous area and coupled to the controller. The controller can be configured to monitor air pressure within the container and variably control a speed of the fan to maintain the detected pressure above a minimum value. Accordingly, a required pressure can be maintained while minimizing a volume of air forced into the container.
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