Window Profile Insulation Block with Interior Slits

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Solution Overview

Problem

Existing window and door profiles face challenges in achieving cost-effective, easy-to-install, and efficient thermal insulation, often resulting in high friction during installation and potential drawbacks in insulation performance.

Innovation Solution

The proposed solution involves a window or door profile with an elongated insulation block that features one or more interior spaces, such as slits, arranged between insulation body parts. This design allows for easier insertion and removal of the insulation material, adapts to complex interior shapes, and reduces friction, especially in profiles with rough surfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If expansion foaming is used to provide insulation material inside the profile during manufacturing, then thermal insulation performance is improved, but the profile wall material is exposed to high temperatures and the process becomes more complex

Engineering Contradiction:
Improvethermal insulation performanceVSAvoidmanufacturing process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The insulation block is segmented with interior spaces (slits) that allow it to be inserted as a pre-formed unit rather than being generated in-situ through expansion foaming. This separates the insulation material preparation from the profile manufacturing process, avoiding high temperature exposure of profile wall material while maintaining insulation performance.

Inventive Principle:
Principle #1Segmentation

2Reliability

If a flexible insulating core with lips is used to provide insulation, then insulation performance is improved, but resistance/friction during insertion increases and installation becomes more difficult

Engineering Contradiction:
Improveinsulation performanceVSAvoidease of installation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The insulation block is divided into body parts separated by interior spaces, creating a segmented structure that reduces friction during insertion while maintaining insulation continuity. The spaces act as separation zones that prevent direct contact between the insulation block and profile walls, reducing resistance.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The interior spaces (slits) act as intermediary elements between the insulation block and the profile chamber walls. These spaces reduce friction and resistance during insertion by preventing direct contact, while still allowing the insulation block to be properly positioned and secured within the profile.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If the insulation material is made solid and continuous, then insulation performance is improved, but ease of removal and recycling is reduced

Engineering Contradiction:
Improveinsulation performanceVSAvoidease of removal and recycling
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The insulation block is segmented with interior spaces that allow it to be removed as a unit while maintaining insulation performance. The spaces create separation zones that facilitate removal without compromising the structural integrity or insulation continuity of the block, enabling easier recycling and disposal.

Inventive Principle:
Principle #1Segmentation

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 solution provides effective thermal insulation with a U-frame value lower than 1.54 W/mK, while also being cost-efficient and easy to install, with the added advantage of improved recyclability at the end of the window or door's life.

Implementation Method 1

The profile comprises at least one elongated insulation block which extends inside the elongated chamber in the longitudinal direction of the profile. The elongated insulation block may comprise a foam insulation material.

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentEP4517022A1Profile comprising an elongated insulation block
Publication Date: 2025.03.05 VKR HOLDING AS
  • EP4517022A1 patent drawingFigure 1
  • EP4517022A1 patent drawingFigure 2~3
  • EP4517022A1 patent drawingFigure 4~6

AI summary

The disclosure relates to a window or door profile (1). The window or door profile (1) comprises exterior walls (3a-3e) providing an outer profile boundary. The profile (1) is elongated and extends in a longitudinal direction (LD1), and the exterior walls (3a-3e) encloses at least one elongated chamber (2, 20) which extends in the longitudinal direction (LD1) of the profile (1). The profile (1) comprises at least one elongated insulation block (4,40) which extends inside the elongated chamber (2, 20) in the longitudinal direction (LD1) of the profile (1). The elongated insulation block comprises one or more interior spaces that is/are elongated and extends in the longitudinal direction of the elongated insulation block. The one or more interior spaces (S 1, S2) is arranged between a first insulation body part (BP1) and a second insulation body part (BP2) of the elongated insulation block. The first and second insulation body parts are interconnected by means of at least one wall part of the elongated insulation block which is arranged opposite to the one or more interior spaces. The one or more interior spaces has a depth which extends transverse to the longitudinal direction of the elongated insulation block (4, 40). The depth may extend over at least 50%, of the width of the insulation block. The elongated insulation block (4,40) is in a compressed state (CS, H2) in the elongated chamber (2, 20).