US 11,703,249 B2
Linearization of airflow through zone dampers of an HVAC system
Christopher M. Puranen, Montgomery, AL (US); and Stephen Maciulewicz, Montgomery, AL (US)
Assigned to RHEEM MANUFACTURING COMPANY, Atlanta, GA (US)
Filed by Rheem Manufacturing Company, Atlanta, GA (US)
Filed on May 20, 2022, as Appl. No. 17/750,259.
Application 17/750,259 is a continuation of application No. 16/866,032, filed on May 4, 2020, granted, now 11,339,991.
Application 16/866,032 is a continuation of application No. 15/850,609, filed on Dec. 21, 2017, granted, now 10,641,515, issued on May 5, 2020.
Prior Publication US 2022/0275962 A1, Sep. 1, 2022
Int. Cl. F24F 11/74 (2018.01); F24F 3/052 (2006.01); F24F 11/62 (2018.01); F24F 3/044 (2006.01); F24F 140/40 (2018.01); F24F 110/40 (2018.01)
CPC F24F 11/74 (2018.01) [F24F 3/044 (2013.01); F24F 3/0527 (2013.01); F24F 11/62 (2018.01); F24F 2110/40 (2018.01); F24F 2140/40 (2018.01)] 18 Claims
OG exemplary drawing
 
1. A system comprising:
a fan;
a damper configured to move from a first position to a second position; and
a controller configured to:
determine a first static pressure value when the damper is in the first position;
determine a second static pressure value when the damper is in the second position;
determine, based at least in part on a difference between the first static pressure value and the second static pressure value, that airflow through the system is nonlinear;
determine a first corrective positional adjustment for the first position based at least in part on the first static pressure value and the second static pressure value;
determine a third position for the damper using the first corrective positional adjustment; and
cause the damper to move to the third position instead of the first position.