Flexible Duct Insulation Compression for Variable R-Values
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Solution Overview
Problem
Current manufacturing methods for flexible ducts require a large number of different products to achieve various insulative values and duct sizes, leading to inefficiencies and increased costs, as they involve multiple layers and thicknesses of fibrous insulation.
Innovation Solution
A method involving an inner core wrapped with a layer of fibrous insulation, which is then compressed by an outer jacket of varying diameters to achieve desired insulative values, allowing for the production of flexible ducts with different insulative values using fewer product variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple layers of fibrous insulation with different thicknesses and densities are used to achieve different insulative values, then the desired insulative performance is achieved, but the number of different flexible duct media products increases, leading to manufacturing inefficiency and increased costs
Solution Approach 1:
The patent applies parameter changes by varying the compression force applied to a single layer of fibrous insulation through different outer jacket diameters. This changes the insulation thickness and density parameters, thereby achieving different insulative values (R-values) from the same base insulation material, eliminating the need for multiple different insulation products.
Solution Approach 2:
The patent makes a single type of fibrous insulation layer serve multiple functions by compressing it to different degrees. The same insulation layer can provide different insulative values depending on the compression level, making it universal for multiple insulative requirements and reducing the total number of products needed.
2Adaptability or versatility
If multiple layers of fibrous insulation with different thicknesses and densities are manufactured and stored, then flexible ducts with various insulative values can be produced, but the storage and handling requirements increase significantly
Solution Approach 1:
Instead of manufacturing and storing multiple insulation layers with different thicknesses and densities, the patent stores a single type of insulation layer and achieves different insulative values by changing the compression parameter during assembly. This dramatically reduces the quantity of different insulation products that need to be manufactured and stored.
Solution Approach 2:
The patent performs the differentiation action (compression to desired thickness) at the assembly stage rather than during insulation manufacturing. By preliminarily preparing a standard insulation layer and then compressing it to the required thickness during duct assembly, the system achieves versatility without increasing inventory complexity.
3Productivity
If conventional methods manufacture flexible ducts with three different insulative values using different insulation thicknesses and densities, then the current product range is maintained, but manufacturing efficiency decreases and costs increase
Solution Approach 1:
The patent merges the function of multiple different insulation layers into a single insulation layer that is compressed to different thicknesses. This consolidation simplifies the manufacturing process by reducing the number of insulation materials that need to be handled, stored, and installed, thereby improving productivity and reducing costs.
Solution Approach 2:
The patent changes the compression parameter (outer jacket diameter) to achieve different insulation thicknesses from the same base material. This parameter-based differentiation eliminates the need to manufacture and manage multiple insulation product lines, simplifying manufacturing operations and reducing costs.
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
This approach simplifies the manufacturing process, reduces the number of required products, and achieves the same range of insulative values as traditional methods, thereby enhancing efficiency and lowering costs.
Implementation Method 1
selecting an outer jacket from a set of outer jackets of different diameters, the selected outer jacket configured to compress the layer of insulation to a desired thickness and inserting the layered assembly into the selected outer jacket thereby forming flexible duct
Data Source
AI summary
Methods of providing flexible duct are provided. The methods include the steps of providing an inner core, the inner core having a cylindrical shape and an outer surface, providing a layer of insulation having a constant uncompressed thickness, fiber diameter and density, wrapping the layer of insulation around the outer surface of the inner core thereby forming a layered assembly, selecting an outer jacket from a set of outer jackets of different diameters, the selected outer jacket configured to compress the layer of insulation to a desired thickness and inserting the layered assembly into the selected outer jacket thereby forming flexible duct. The thickness of the compressed layer of insulation provides a desired insulative value. The outer jackets included in the set of outer jackets are configured to compress the layer of insulation into a plurality of flexible duct having different insulative values from each other.