INDUCED DRAFT FAN
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United States of America Patent
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app pub date -
Jul 15, 2014
filing date -
Jun 30, 2012
priority date (Note) -
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Abstract
An induced draft fan, including: a fan housing, a wind wheel, and an ECM motor including a motor body and a motor controller. The motor controller is a control board that is not enclosed in a control box. The control board includes a microprocessor unit, an IGBT switch and a drive unit thereof, a detection unit for detecting operating parameters of the motor, and a DIP switch unit. The detection unit transmits operating parameters of the motor to the microprocessor unit. The microprocessor unit outputs a signal to control the IGBT switch and the drive unit thereof. An output end of the IGBT switch and the drive unit thereof is connected to the coil winding of the stator. An output end of the DIP switch unit is connected to an input end of the microprocessor unit.
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