Damper for HVAC system

Patent metadata

Field	Value
Publication number	US-12474081-B2
Application number	US-202217669269-A
Country	US
Kind code	B2
Filing date	Feb 10, 2022
Priority date	Feb 10, 2022
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

A damper assembly includes a frame, a damper blade coupled to the frame and configured to transition between an open position and a closed position, and a latch configured to be secured within the damper assembly via a clip portion of the latch. The latch is configured to deform to facilitate transitioning of the damper blade from the open position to the closed position and then to expand to capture and retain the damper blade in the closed position.

First claim

The invention claimed is:

1 . A damper assembly, comprising:
a frame; a damper blade coupled to the frame, wherein the damper blade is configured to transition between an open position and a closed position; and a latch configured to be secured within the damper assembly via a clip portion of the latch, wherein the latch is configured to deform to facilitate transitioning of the damper blade from the open position to the closed position and then to expand to capture and retain the damper blade in the closed position, wherein the latch comprises
a crown portion configured to compress towards the frame as the damper blade transitions from the open position to the closed position, and
a recess defined by a segment of the crown portion and a segment of the clip portion, the recess configured to capture the damper blade in the closed position, and
wherein the segment of the crown portion is positioned at an acute angle relative to the segment of the clip portion such that when the damper blade is in the closed position, a threshold force exerted on the damper blade on a surface opposite the crown portion releases the damper blade from the latch.

2 . The damper assembly of claim 1 , wherein the damper blade is coupled to the frame via an integral spring hinge.

3 . The damper assembly of claim 2 , wherein the integral spring hinge comprises a thickness that is greater than or equal to 0.008 inches.

4 . The damper assembly of claim 1 , wherein the damper blade is configured to rotate relative to the frame.

5 . The damper assembly of claim 1 , wherein the frame comprises an external frame portion and a protrusion extending radially inward relative to the external frame portion, and the clip portion of the latch is configured to capture the protrusion in an installed configuration of the latch.

6 . The damper assembly of claim 5 , wherein the latch comprises a vertical segment configured to abut an inner surface of the external frame portion in the installed configuration, the vertical segment extending from the crown portion toward the clip portion.

7 . The damper assembly of claim 6 , wherein the crown portion extends away from the external frame portion in the installed configuration, and when the crown portion compresses, the vertical segment translates along the inner surface of the external frame portion.

8 . The damper assembly of claim 1 , wherein the segment of the crown portion partially defines a first arcuate segment with a first radius, the segment of the clip portion partially defines a second arcuate segment with a second radius, and the first radius is greater than the second radius.

9 . The damper assembly of claim 1 , wherein the latch comprises a wireform structure.

10 . A damper assembly, comprising:
a frame; a first damper blade and a second damper blade rotatably coupled to the frame, wherein the first damper blade and the second damper blade are configured to rotate relative to one another to transition the damper assembly between an open configuration and a closed configuration; and a latch coupled to the frame via a clip portion of the latch, wherein the latch is configured to capture and retain one of the first damper blade or the second damper blade in the closed configuration of the damper assembly, wherein the latch is configured to capture and retain the one of the first damper blade or the second damper blade in the closed configuration of the damper assembly, the latch comprising a first segment, a second segment, and a third segment, the first segment and the second segment are oriented relative to one another to form a recess configured to capture and retain the one of the first damper blade or the second damper blade in the closed configuration of the of the damper assembly, and the second segment and the third segment are oriented relative to one another to form a crown portion configured to compress to facilitate passage of the one of the first damper blade or the second damper blade into the recess, and wherein the second segment forms a first acute angle relative to a vertical axis, the third segment forms a second acute angle relative to the vertical axis, and the first acute angle is greater than the second acute angle, such that when the one of the first damper blade or the second damper blade is in the closed position, a threshold force exerted on the one of the first damper blade or the second damper blade on a surface opposite the crown portion releases the one of the first damper blade or the second damper blade from the latch.

11 . The damper assembly of claim 10 , wherein the first damper blade and the second damper blade are coupled to one another via an integral spring hinge.

12 . The damper assembly of claim 11 , wherein the integral spring hinge is configured to bias the first damper blade and the second damper blade toward the closed configuration of the damper assembly.

13 . The damper assembly of claim 10 , wherein the latch is a first latch configured to capture the first damper blade in the closed configuration of the damper assembly, and the damper assembly comprises a second latch coupled to the frame and configured to capture and retain the second damper blade in the closed configuration of the damper assembly.

14 . The damper assembly of claim 10 , comprising a metallic link configured to compress the first damper blade and the second damper blade toward one another to maintain the damper assembly in the open configuration, and the metallic link is configured to deform at a threshold temperature to enable the first damper blade and the second damper blade to rotate and transition the damper assembly to the closed configuration.

15 . A damper assembly, comprising:
a frame forming an opening, wherein the frame comprises a protrusion extending radially inward into the opening; a damper blade coupled to the frame, wherein the damper blade is configured to transition between an open position and a closed position; and a latch comprising a clip portion configured to capture the protrusion to couple the latch to the frame, wherein the latch comprises a recess configured to capture and retain the damper blade in the closed position, and the latch is configured to deform to facilitate passage of the damper blade into and out of the recess, wherein the latch comprises a crown portion configured to compress towards an inner surface of the frame as the damper blade passes into the recess, and a vertical segment configured to abut the inner surface of frame portion, the vertical segment extending from the crown portion toward the clip portion, and wherein when the crown portion compresses, the vertical segment to translates along the inner surface the frame.

16 . The damper assembly of claim 15 , wherein the clip portion is configured to secure the latch to an upstream portion of the frame, a downstream portion of the frame, or both.

17 . The damper assembly of claim 15 , comprising a backing and a link, wherein the backing is fixedly coupled to the frame, and the link is configured to couple to the damper blade and the backing to maintain the damper blade in the open position.

18 . The damper assembly of claim 15 , wherein a recess is defined by a segment of the crown portion and a segment of the clip portion, the recess configured to capture the damper blade in a closed position, and wherein the segment of the crown portion is positioned at an acute angle relative to the segment of the clip portion, such that when the damper blade is in the closed position, a threshold f

Assignees

• Air Distribution Tech Ip Llc

Inventors

• Thompson Cody Christopher
• Bellerive Brian Gerard
• Beneke Jeffrey Scott
• Maune Kent Steven

Classifications

• F24F2013/146

  with springs · CPC title

• F24F13/1486

  characterised by bearings, pivots or hinges · CPC title

• F24F13/1426 Primary

  characterised by actuating means · CPC title

• F24F13/084 Primary

  with mounting arrangements, e.g. snap fasteners for mounting to the wall or duct · CPC title