Damper assembly-containing connector and method of use
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Solution Overview
Problem
HVAC connectors with damper assemblies suffer from leakage at the connection between the damper rod and the housing, which compromises energy efficiency, and covering the control arm with insulation renders the damper inoperable.
Innovation Solution
A damper assembly-containing connector with a layer of foam insulation that seals the openings in the housing while allowing the control arm to be exposed and operational, enhancing the seal between the connector and flexible ducts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If foam insulation is applied to seal the openings in the housing, then air leakage is minimized, but the control arm becomes covered and the damper becomes inoperable
Solution Approach 1:
The foam insulation is segmented into two distinct zones: a first portion that seals the openings in the housing to prevent air leakage, and a second portion that is configured to hold the control arm in a desired position without covering it completely. This segmentation allows the insulation to perform both sealing and operational support functions simultaneously.
Solution Approach 2:
The foam insulation exhibits local quality variations where the first portion has sealing properties for the openings, while the second portion has a specific configuration (such as a recess or cavity) that locally accommodates the control arm. This local differentiation ensures that the control arm remains accessible for operation while the surrounding areas provide effective sealing.
2Ease of operation
If the control arm is exposed for operation, then damper functionality is maintained, but air leakage increases at the openings
Solution Approach 1:
The foam insulation acts as an intermediary element between the openings and the external environment. The first portion of the foam seals the openings to prevent air leakage, while the second portion intermediates the control arm's position by holding it in a desired location without completely enclosing it, thus maintaining accessibility for operation.
Solution Approach 2:
The foam insulation configuration allows for dynamic control arm movement within the constraints of the second portion. The control arm can move between different positions (such as fully open, fully closed, and intermediate positions) while the foam maintains its holding function, providing a balance between sealing and operational flexibility.
3Reliability
If foam insulation surrounds the connector housing, then the seal between connector and flexible duct is enhanced, but the device complexity increases
Solution Approach 1:
The foam insulation serves multiple functions simultaneously: it provides thermal insulation, seals the openings in the housing to prevent air leakage, and supports the control arm in a desired position. This multi-functionality reduces the need for separate components, thereby enhancing reliability without proportionally increasing device complexity.
Solution Approach 2:
The foam insulation can be configured as a composite structure with different densities or compositions in its first and second portions. The first portion may have higher density for effective sealing, while the second portion may have lower density or a specific shape to accommodate the control arm, optimizing both seal integrity and operational functionality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Minimizes air leakage while maintaining damper functionality, improving energy efficiency by ensuring the control arm can move freely and enhancing the seal between the connector and ducts.
Implementation Method 1
a layer of foam insulation surrounding at least a portion of the housing having the at least one opening
Implementation Method 2
the control arm positioned in a first surface profile of the foam insulation surrounding at least a portion of the housing and held in a first operating position
Data Source
AI summary
A damper assembly-containing connector includes a foam insulation layer that surrounds at least a portion of the connector. The foam insulation layer seals openings associated with a damper rod of the damper assembly to reduce leakage of air flowing through the connector. The foam insulation layer also includes a surface profile that is configured to position a control arm of the damper assembly in a first operating position on a portion of the surface of the foam insulation layer. The control arm can be moved from a recess of the surface profile to position the control arm in at least a second location and second operating position to adjust the position of the damper plate of the damper assembly for air flow control.