US 11,703,247 B2
Ventilation system with automatic flow balancing derived from a neural network and methods of use
Simon Blanchard, Drummondville (CA)
Assigned to Broan-NuTone LLC, Hartford, WI (US)
Filed by BROAN-NUTONE LLC, Hartford, WI (US)
Filed on Oct. 13, 2021, as Appl. No. 17/499,969.
Application 17/499,969 is a continuation of application No. 16/438,066, filed on Jun. 11, 2019, granted, now 11,168,916.
Claims priority of provisional application 62/683,420, filed on Jun. 11, 2018.
Prior Publication US 2022/0136728 A1, May 5, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. F24F 11/63 (2018.01); F24F 11/77 (2018.01); F24F 12/00 (2006.01); F24F 11/00 (2018.01)
CPC F24F 11/63 (2018.01) [F24F 11/0001 (2013.01); F24F 11/77 (2018.01); F24F 12/001 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A ventilation system comprising:
a ventilation device configured to generate an air flow and including:
a first blower assembly including a blower motor and a control circuit, said control circuit programmed with a first mathematical equation;
wherein the first mathematical equation determines an estimated blower air flow for the first blower assembly based upon at least: (i) air path parameters of the blower motor that are derived from the use of a neural network, (ii) a blower motor speed, and (iii) a blower motor current;
wherein the air flow of the ventilation device is set to an air flow set point, the estimated blower air flow is within 5% of said air flow set point.