Feedback warning system using inducer pulse width modulation signal

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United States of America Patent

PATENT NO 11781785
APP PUB NO 20200292182A1
SERIAL NO

16569353

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Importance

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Abstract

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In an aspect, an HVAC system includes an inducer motor to provide combustion airflow, and a pressure sensor to measure an output airflow pressure of the inducer motor. The HVAC system may initiate the inducer motor, and receive a pulse width modulation (PWM) signal from the inducer motor, wherein the PWM signal indicates a PWM signal of the inducer motor corresponding to a predetermined airflow pressure of the inducer motor and measured by the pressure sensor. The HVAC system may compare the PWM signal to a baseline value, and control the inducer motor based on the comparing of the PWM signal to the baseline value. The HVAC system may also generate a status notification of the combustion airflow of the HVAC system in response to the comparing the PWM signal to the baseline value.

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Patent Owner(s)

  • JOHNSON CONTROLS TYCO IP HOLDINGS LLP

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Boyd, Andrew Michael Wichita, US 20 5
Chase, Thomas D Rose Hill, US 17 45
Gillette, Theresa N Wichita, US 62 593
Jayarathne, Madhuka Manuranga Wichita, US 15 6

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