AIR VALVE CONTROL METHOD, CONTROL DEVICE, CONTROL SYSTEM, AND FUME HOOD

WIPO Patent Application WO/2018/209779

A1

An air valve control method, control device, control system, and fume hood. The air valve is provided on the fume hood, and the fume hood is provided with a movable door. The control method comprises: performing real-time airflow measurement (101): when the air valve continues to have a certain opening angle, measuring a real-time airflow value at a predetermined frequency; reference airflow calculation: measuring an opening area of a movable door (102), and calculating, according to the opening area and a predetermined safety face velocity, a reference airflow required for the air valve to ensure the safe face velocity (103); and airflow difference determination (104): determining whether the real-time airflow value is within a tolerance range of the reference airflow, and if so, maintaining the opening angle of the air valve, or else adjusting the angle of the air value to enable the real-time airflow to fall within the tolerance range. The air valve control method enables safe, highly efficient, energy-saving, and intelligent ventilation regulation.

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RUAN HONGZHENG (CN)
TANG GUANGYE (US)
XIE CHANGJUN (CN)
LU BINGLI (CN)

PCT/CN2017/092084

November 22, 2018

July 06, 2017

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E3 GREEN TECH CO LTD (CN)

B08B15/02; F24F11/00

WO2002062496A1

2002-08-15

CN206810835U	2017-12-29
CN204799657U	2015-11-25
CN102652948A	2012-09-05
CN202813643U	2013-03-20
KR20110003814A	2011-01-13

WATSON & BAND INTELLECTUAL PROPERTY AGENT LTD. (CN)

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