US 12,135,139 B2
System and method for controlling air flow in air handling unit
Baojie Mu, Aubey, TX (US)
Assigned to Rheem Manufacturing Company, Atlanta, GA (US)
Filed by Rheem Manufacturing Company, Atlanta, GA (US)
Filed on Oct. 27, 2023, as Appl. No. 18/496,196.
Application 18/496,196 is a continuation of application No. 17/123,510, filed on Dec. 16, 2020, granted, now 11,828,480.
Prior Publication US 2024/0053046 A1, Feb. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F24F 11/64 (2018.01); F24F 11/75 (2018.01); F24F 11/76 (2018.01); F24F 110/10 (2018.01); F24F 110/20 (2018.01); F24F 110/40 (2018.01)
CPC F24F 11/75 (2018.01) [F24F 11/76 (2018.01); F24F 11/64 (2018.01); F24F 2110/10 (2018.01); F24F 2110/20 (2018.01); F24F 2110/40 (2018.01)] 20 Claims
OG exemplary drawing
 
1. A method of controlling air flow in an air handling unit, the method comprising:
determining, by a controller, a first value indicative of a characteristic of electric power supplied to the air handling unit;
determining an amount of heat generated from an air mover of the air handling unit based on the first value;
determining a first density of air received through an air inlet duct of the air handling unit;
determining at least one dimensional characteristic of the air handling unit;
determining a speed of a motor of the air handling unit;
determining an actual air flow rate based on the first density of air, the at least one dimensional characteristic, and the speed of the motor; and
causing the speed of the motor to be adjusted from a first speed to a second speed, such that the actual air flow rate matches a target air flow rate.