US 11,913,673 B2
Method and system for utilizing a bypass humidifier for dehumidification during cooling
Rakesh Goel, Irving, TX (US); Eric Perez, Hickory Creek, TX (US); and Eric Berg, The Colony, TX (US)
Assigned to Lennox Industries Inc.
Filed by Lennox Industries Inc., Richardson, TX (US)
Filed on May 24, 2022, as Appl. No. 17/751,768.
Application 17/751,768 is a continuation of application No. 16/208,858, filed on Dec. 4, 2018, granted, now 11,371,728.
Prior Publication US 2022/0316722 A1, Oct. 6, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. F24F 1/0007 (2019.01); F24F 6/08 (2006.01); F24F 11/30 (2018.01); F24F 1/022 (2019.01); F24F 1/0059 (2019.01); F24F 11/74 (2018.01); F24F 13/10 (2006.01); F24F 13/02 (2006.01); F24F 11/00 (2018.01); F24F 110/30 (2018.01); F24F 110/22 (2018.01)
CPC F24F 6/08 (2013.01) [F24F 1/0007 (2013.01); F24F 1/0059 (2013.01); F24F 1/022 (2013.01); F24F 11/0008 (2013.01); F24F 11/30 (2018.01); F24F 11/74 (2018.01); F24F 13/02 (2013.01); F24F 13/10 (2013.01); F24F 2110/22 (2018.01); F24F 2110/30 (2018.01)] 20 Claims
OG exemplary drawing
 
1. A heating, ventilation, and air conditioning (HVAC) system comprising:
a vertically aligned supply air duct and return air duct;
a bypass duct that fluidly couples the vertically aligned supply air duct and the return air duct;
a damper disposed in the bypass duct, the damper being moveable between an open position and a closed position;
a controller operatively coupled to the damper and disposed in an enclosed space, wherein the controller incorporates a humidity sensor for measuring a relative humidity of the enclosed space;
wherein the controller is configured to:
determine if the relative humidity measured is above a pre-determined threshold;
responsive to a determination that the relative humidity of the enclosed space is not above the pre-determined threshold, retain the damper in the closed position;
responsive to a determination that the relative humidity of the enclosed space is above the pre-determined threshold, determine if a speed of a variable-speed indoor circulation fan can be reduced;
responsive to a determination that the speed of variable-speed indoor circulation fan can be reduced, reduce the speed of the variable-speed indoor circulation fan; and
responsive to a determination that the speed of the variable-speed indoor circulation fan cannot be reduced, signal the damper to move to the open position to reduce a volume of air supplied to the enclosed space to create an effect similar to that of reducing the speed of the variable-speed indoor circulation fan.