Triangular Peripheral Seal for Electrical Box Vapor Barrier
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Solution Overview
Problem
Existing electrical boxes compromise the vapor barrier in building structures when installed, as they require penetration of vapor seals and drywall, leading to air leakage and reduced thermal efficiency due to dimensional and alignment inconsistencies.
Innovation Solution
An electrical box with a peripheral seal on its exterior surface, featuring a triangular cross-sectional shape with a thick and thin end, which compresses to create a tight seal around the box, preventing air flow and accommodating inconsistent openings, ensuring the integrity of the vapor barrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an electrical box is installed in an existing wall structure, then the electrical box can be mounted to provide electrical components access, but gaps are created about the periphery of the electrical box allowing air flow that reduces thermal efficiency
Solution Approach 1:
The patent applies a flexible foam seal that conforms to the irregular gaps between the electrical box and the wall opening. The foam material can deform and expand to fill voids and create an airtight seal, preventing air leakage while accommodating dimensional inconsistencies in the installation opening.
Solution Approach 2:
The foam seal acts as an intermediary element between the electrical box and the wall structure. It bridges the gap created by dimensional mismatches and provides a sealing function that neither the rigid electrical box nor the wall structure can achieve alone.
2Adaptability or versatility
If the opening in the wall does not correspond precisely to the shape and size of the electrical box periphery, then installation flexibility is improved, but gaps are created that allow air flow and reduce thermal efficiency
Solution Approach 1:
The foam seal changes its physical parameters (shape, volume, density) in response to compression and expansion forces. When installed, the foam can be compressed to fit within the available space and then expands to fill gaps, adapting its parameters to match the irregular geometry of the wall opening and electrical box interface.
Solution Approach 2:
The flexible foam material can deform to accommodate variations in the opening dimensions and shape. This flexibility allows the seal to maintain contact with both the electrical box periphery and the wall structure, creating an effective barrier against air leakage despite dimensional inconsistencies.
3Ease of operation
If a vapor seal is penetrated to install an electrical box, then the electrical box can be mounted in the wall, but the integrity of the vapor barrier is compromised leading to air leakage
Solution Approach 1:
The foam seal creates a new vapor barrier that replaces the penetrated original vapor seal. The flexible foam material forms a continuous sealing layer around the electrical box, preventing moisture and air infiltration through the penetration point while maintaining the vapor barrier function of the wall assembly.
Solution Approach 2:
The penetration created by installing the electrical box is converted from a harmful breach in the vapor barrier into a controlled interface sealed by the foam seal. The seal transforms the potential source of leakage into a protected transition zone that maintains vapor barrier integrity.
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 peripheral seal effectively maintains the vapor barrier by compressing to fit various dimensions and alignments, preventing air leakage and enhancing thermal efficiency while allowing for easy installation and secure positioning of the electrical box.
Implementation Method 1
a seal disposed on an exterior surface of the at least one sidewall
Implementation Method 2
which compresses to create a tight seal around the box
Data Source
AI summary
An electrical box includes a front surface having an opening providing access to a hollow interior of the electrical box, at least one sidewall extending rearwardly from the front surface to form the hollow interior, and a seal disposed on an exterior surface of the at least one sidewall. The seal has a triangular cross-sectional shape including a thin end configured to first enter an opening of a building structure receiving the electrical box therein. A tapered surface of the seal is compressed as the electrical box is received into the opening in the building structure to provide a seal around an exterior surface of the at least one sidewall of the electrical box.