US 12,416,426 B2 · Linearization of airflow through zone dampers of an HVAC system

Abstract

Embodiments include systems and methods for linearization of airflow through dampers of a heating, ventilation, and air conditioning systems. In one embodiment, a system may include a fan, a first damper for a first zone of the system, the first damper configured to move from a first position to a second position, and from the second position to a third position; and a controller. The controller may be configured to determine a first corrective positional adjustment for the first damper for the second position at a first time interval, and determine, using the first corrective positional adjustment, a fourth position for the first damper, wherein the first damper moves to the fourth position instead of the second position during a second time interval.

Claims20

Dependent claims

A system in communication with a fan and a first damper that is configured to move from a first position to a second position, and from the second position to a third position, the system comprising:

a controller configured to:
determine a first corrective positional adjustment for the first damper for the second position at a first time interval;
determine, using the first corrective positional adjustment, a fourth position for the first damper, wherein the first damper moves to the fourth position instead of the second position during a second time interval;
and
determine, after the first damper is in the fourth position, that airflow through the system is linear;
wherein the first damper is for a first zone of the system.

3 more elements

A system in communication with a fan and a first damper that is configured to move from a first position to a second position, and from the second position to a third position, the system comprising:

a controller configured to:
determine a first corrective positional adjustment for the first damper for the second position at a first time interval;
determine, using the first corrective positional adjustment, a fourth position for the first damper, wherein the first damper moves to the fourth position instead of the second position during a second time interval;
and
replace the second position with the fourth position in memory coupled to the controller;
wherein the first damper is for a first zone of the system.

3 more elements

A system in communication with a fan and a first damper that is configured to move from a first position to a second position, and from the second position to a third position, the system comprising:

a controller configured to:
increment the first damper in a first direction by a first amount;
increment the first damper in the first direction by a second amount;
and
determine that airflow through the system is linear;
determine a first corrective positional adjustment for the first damper for the second position at a first time interval, wherein the first corrective positional adjustment is a sum of the first amount and the second amount;
and
determine, using the first corrective positional adjustment, a fourth position for the first damper, wherein the first damper moves to the fourth position instead of the second position during a second time interval;
wherein the first damper is for a first zone of the system.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/204,698Filed 1 Jun 2023 · continuation

Priority

21 Dec 2017

Published

US 2023/0304693 A128 Sep 2023

Granted

16 Sep 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

F24F 11/74
For controlling the supply of treated air, e.g. its pressure: for controlling air flow rate or air velocity
F24F 3/044
Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or…:…
F24F 3/0527
Multiple duct systems, e.g. systems in which hot and cold air are supplied by separate circuits from the central station to mixing chambers in…
F24F 11/62
Control or safety arrangements: characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or…

Family

Application15/850,609Parent of this continuation · filed 21 Dec 2017

Application16/866,032Parent of this continuation · filed 4 May 2020

US 10,641,515 B2Parent of this continuation · filed 5 May 2020

Application17/750,259Parent of this continuation · filed 20 May 2022

US 11,339,991 B2Parent of this continuation · filed 24 May 2022

US 2023/0304693 A1Pre-grant publication · published 28 Sep 2023

US 11,703,249 B2Parent of this continuation

US 2019/0195527 A1Published application

US 2020/0263896 A1Published application

US 2022/0275962 A1Published application

US 12,416,426 B2This patent

From the US filing history. Foreign family members aren’t listed.

Linearization of airflow through zone dampers of an HVAC system

Life of this patent

Linearization of airflow through zone dampers of an HVAC system

Life of this patent

Abstract

Claims20