Inflatable Cavity Insulation with Spacers to Preserve Air Gaps
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Solution Overview
Problem
Existing methods for insulating building cavities require removing and replacing plasterboard to maintain an air gap, which is messy, time-consuming, and expensive, and existing insulation materials fill the entire cavity without preserving the required gap.
Innovation Solution
An inflatable insulation device with plates and spacers that maintain a ventilation gap by inflating within the cavity, using insulating materials like beads or foam, and securing with attachment devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If insulation material is inserted into the cavity to reduce heat loss, then thermal insulation performance is improved, but the required air gap cannot be maintained
Solution Approach 1:
The cavity is segmented into two distinct zones: an insulation zone containing the insulating material and a ventilation zone maintaining the required air gap. This segmentation allows both heat loss reduction and air gap maintenance to be achieved simultaneously by dividing the cavity space into functional regions.
Solution Approach 2:
Different regions of the cavity are assigned different qualities: one region contains insulation material for thermal performance while another region maintains empty air space for ventilation. This local differentiation of properties allows the system to satisfy both thermal insulation requirements and ventilation gap requirements in different locations within the same cavity structure.
2Manufacturing precision
If plaster board is removed and replaced to maintain air gap during insulation installation, then air gap is maintained, but installation complexity and cost increase
Solution Approach 1:
The insulation device is pre-configured with the air gap structure before installation. The rigid spacer members and insulation material are positioned in advance to maintain the required ventilation gap, eliminating the need for complex on-site plaster board removal and replacement operations.
Solution Approach 2:
Rigid spacer members act as intermediary elements between the insulation material and the cavity boundaries. These spacers maintain the required air gap without requiring removal or replacement of existing plaster board, serving as a mediating structure that preserves both insulation performance and ventilation requirements.
3Loss of energy
If insulating foam or beads are squirted into the cavity, then insulation is provided, but the entire cavity is filled and air gap is lost
Solution Approach 1:
The insulation device utilizes the dynamic property of inflatable receptacles that can be inflated to a controlled extent. By controlling the inflation level, the receptacle fills the cavity to provide insulation while stopping before completely filling the space, thereby preserving the required air gap. This dynamic control allows precise management of both insulation coverage and air gap maintenance.
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
Enables efficient insulation of building cavities while preserving the required air gap without disrupting existing structures, reducing mess and cost, and allowing easy installation.
Implementation Method 1
an inflatable receptacle (102) configured to be inflated with an insulating material (110) inserted through the at least one insulating material entrance (108)
Implementation Method 2
a plurality of elongate spacers (106) coupled to the second plate surface (104B) of at least one of the plurality of plates (104), wherein the plurality of spacers (106) are configured to extend away from the second plate surface (104B)
Data Source
Figure 1
Figure 2A~2B
Figure 3~4
AI summary
An insulation device comprising an inflatable receptacle, a plurality of plates connected to the receptacle and a plurality of spacers connected to the plates. The receptacle is configured to be inflated, once in a desired position within cavity, with an insulating material. The insulating material is inserted into the receptacle through an insulating material entrance in the receptacle. The spacers have a height H configured to maintain a required air gap within the cavity once the receptacle has been inflated by preventing the inflatable receptacle from inflating to fill the entire cavity.