Structural Insulated Panel Joints With Integrated Labyrinth Seals
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Solution Overview
Problem
Conventional structural insulated panels require time-consuming and skill-dependent field application of sealants at joints, which can be ineffective, and their frame members, typically made of wood, do not provide optimal thermal insulation performance while being heavy.
Innovation Solution
The structural insulated panel system features frame members with integrated recesses and projections that include compressible seals, eliminating the need for field-applied sealants and enhancing thermal insulation by using a structural labyrinth seal and voids filled with insulation material, reducing weight and improving assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If field-applied sealants are used at frame member joints, then joint sealing is achieved, but assembly time increases and sealing effectiveness varies based on installer skill
Solution Approach 1:
Compressible seals are pre-installed within recesses of frame members during manufacturing, eliminating the need for field application. The seals are positioned in advance to ensure proper alignment and compression when panels are assembled, providing consistent sealing effectiveness regardless of installer skill while reducing assembly time.
Solution Approach 2:
The compressible seals are designed to automatically compress and seal joints when frame members are assembled together. The seals self-adjust to the joint geometry and provide sealing action through their inherent compressibility, eliminating the need for manual sealant application and ensuring consistent sealing performance.
2Loss of energy
If traditional wood frame members are used, then cost is reduced and ease of manufacture is improved, but thermal insulation performance is insufficient and weight is high
Solution Approach 1:
Voids are strategically created within the frame member structure at locations where thermal insulation is most needed, while maintaining structural integrity in load-bearing areas. This localized approach to insulation provides improved thermal performance without uniformly increasing weight throughout the entire frame member.
Solution Approach 2:
The frame members incorporate voids that can be filled with insulation material, creating a porous or cellular structure within the frame. This porous design provides thermal insulation pathways while using less material than solid construction, thereby reducing weight while improving thermal performance.
3Strength
If solid wood frame members are used, then structural strength is adequate, but thermal bridges are created and weight increases
Solution Approach 1:
The frame member is divided into multiple sections with voids interspersed between structural elements. This segmentation breaks up continuous thermal conduction paths through the wood, reducing thermal bridge effects while maintaining overall structural strength through the distributed framework design.
Solution Approach 2:
The frame member combines wood structural elements with insulation material filled in voids, creating a composite structure. This composite design leverages the strength of wood where needed while introducing thermal breaks through the insulation-filled voids, reducing thermal bridge effects without compromising structural 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
This solution provides improved joint sealing, enhanced thermal insulation performance, and reduced weight by integrating compressible seals and voids within the frame members, facilitating rapid and secure assembly while minimizing the need for field-applied sealants.
Implementation Method 1
A first compressible seal is disposed within the recesses and configured to be compressed by the projections of an adjacent panel upon assembly of two panels to one another
Implementation Method 2
A plurality of voids are formed in at least one of the frame members and filled with the insulation fill material
Data Source
AI summary
A structural insulated panel system includes a frame having a first and second vertical frame members and top and bottom frame members. First and second siding members are attached to opposite sides of the frame, the frame and the first and second siding members forming a cavity, with an insulation material within the cavity. The first vertical frame member includes recesses having a first depth and the second vertical frame member includes projections having a second depth. A first compressible seal is disposed within the recesses and is compressed by the projections of an adjacent panel upon assembly. A second compressible seal is disposed adjacent to each outside edge of the first or second vertical frame member and is compressed by the other frame member upon assembly. A plurality of voids are formed in at least one of the frame members and filled with the insulation fill material.