Rigid Foam Insulation Tongue-and-Groove Coupling
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Solution Overview
Problem
Conventional rigid foam insulation for pipes requires temporary securing methods like glue, ties, or tape to hold half-shells together before banding, which is time-consuming and inefficient.
Innovation Solution
A tongue-and-groove coupling system in rigid foam insulation, where the tongue is bifurcated into ridges with a wedge-shaped void and coated with polyurea or polyurethane, allowing for a snap-fit connection without breaking, and optionally filled with compressible material to enhance insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional half-shells are permanently held together by banding, then the insulation is securely fixed in place, but additional fastening materials (glue, ties, tape) are required and installation time increases
Solution Approach 1:
The insulation is divided into modular sections with tongue-and-groove coupling features that interlock to form a continuous insulation layer. The tongue portion extends from one end of a section while the groove is formed at the opposite end, allowing sequential assembly without additional fasteners.
Solution Approach 2:
The coupling features (tongue and groove) are integrated directly into the insulation sections themselves, combining the structural insulation function with the mechanical connection function in a single component rather than requiring separate fastening materials.
2Ease of operation
If conventional half-shells are temporarily secured with glue, ties, or tape for banding, then the shells can be held together during installation, but this requires additional materials and increases installation time
Solution Approach 1:
The mechanical coupling features are built into the insulation sections themselves, merging the structural integrity function with the connection function, eliminating the need for separate fastening materials like glue, ties, or tape.
Solution Approach 2:
The insulation sections are self-contained with integrated tongue-and-groove features that enable self-assembly and self-securing without requiring external fastening materials or additional operational steps.
3Reliability
If the tongue is made from rigid foam material without reinforcement, then the insulation maintains its insulating properties, but the tongue breaks when the first and second ridges flex toward one another
Solution Approach 1:
The tongue is constructed as a composite structure combining rigid foam material with an embedded reinforcement element (such as metal or rigid plastic). This composite construction provides both the insulating properties of the foam and the flexural strength needed to prevent breaking during assembly.
4Ease of operation
If the groove tapers from narrow to wide into the body, then the tongue can be inserted easily, but the connection may be less secure
Solution Approach 1:
The groove features an asymmetric tapered profile that is narrow at the opening and widens toward the interior of the insulation body. This asymmetric geometry allows the tongue to be easily inserted while the wider internal portion provides a secure mechanical interlock that prevents disengagement.
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 secure, removable connection of insulation sections around pipes without additional fastening materials, reducing installation time and material usage while providing structural reinforcement and improved insulation performance.
Implementation Method 1
A polymer coating of polyurea or polyurethane substantially covers the tongue and structurally reinforces the tongue allowing the first and second ridges to flex toward one another without breaking
Implementation Method 2
The tongue is bifurcated along its length into first and second ridges by a wedge-shaped void
Implementation Method 3
rigid foam insulation having a tongue-and-groove coupling for removably connecting sections of insulation together
Data Source
AI summary
An insulating member comprises a body of rigid foam material having a first connecting edge surface and a second connecting edge surface, a groove formed into the rigid foam material of the body along the first connecting edge surface, and a tongue formed from the rigid foam material of the body along the second connecting edge surface. The groove, when viewed in a transverse cross-section, tapers from narrow to wide in a direction extending from its opening and into the body. The tongue, when viewed in a transverse cross-section, tapers from wide to narrow in a direction toward the second connecting edge surface. The tongue is bifurcated along its length into first and second ridges by a wedge-shaped void. A polymer coating of polyurea or polyurethane substantially covers the tongue and structurally reinforces the tongue allowing the first and second ridges to flex toward one another without breaking.