Ducting system for HVAC application
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Solution Overview
Problem
Existing HVAC ducting systems require excessive manual effort for installation, are prone to moisture and temperature-related issues, and lack structural integrity, leading to poor aesthetics and frequent replacements.
Innovation Solution
A ducting system comprising an inner and outer duct member with a bonding and insulation composite that provides structural rigidity, using a closed-cell Polyurethane and resin mixture to create a hermetically sealed space with a high R-value, allowing for easy assembly and robust construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If insulation liner is installed inside the duct using traditional methods (fasteners and glue), then thermal insulation is provided, but installation time and manual effort are significantly increased
Solution Approach 1:
The patent combines the insulation liner and cladding into a single pre-assembled unit that attaches to the duct as one component. This merging eliminates the need for separate installation steps of fasteners, glue, and cladding, thereby reducing installation time while maintaining thermal insulation performance.
Solution Approach 2:
The insulation liner and cladding are pre-assembled into a complete unit before installation. This preliminary action allows the insulation system to be installed as a single component rather than requiring multiple sequential steps during the installation process, significantly reducing on-site installation time and manual effort.
2Reliability
If exterior rated foam insulation is installed on the exterior surface of the duct, then thermal insulation is provided, but the duct lacks structural integrity and protection from impact
Solution Approach 1:
The patent creates a composite structure combining the rigid duct, insulation liner, and protective cladding into a single integrated assembly. This composite construction provides both thermal insulation and structural integrity, as the combined structure resists impact and mechanical loads better than the duct alone, while the insulation remains protected within the composite system.
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
The system reduces installation time, enhances durability, and maintains thermal efficiency while supporting other structures and allowing for easy cleaning and maintenance, with a longer warranty period compared to traditional methods.
Implementation Method 1
a bonding and insulation composite that is disposed in the space between the inner and outer duct members to insulate the inner and outer duct members from each other
Implementation Method 2
adhesively bond with each of the inner and outer duct members for imparting structural rigidity to the duct assembly
Data Source
AI summary
A ducting system for a heating ventilation and air conditioning (HVAC) application includes a duct assembly having an inner duct member, and an outer duct member disposed around the inner duct such that the outer and inner duct members together define a pre-determined amount of space therebetween. The ducting system also includes a bonding and insulation composite that is disposed in the pre-determined amount of space between the inner and outer duct members to insulate the inner and outer duct members from each other yet adhesively bond with each of the inner and outer duct members for imparting structural rigidity to the duct assembly.