Infrared Heating Device for Localized Panel Adhesive Removal
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Solution Overview
Problem
Conventional methods for removing adhesive-bonded panels in industrial contexts, such as in the automotive sector, often result in damage to panels and underlying surfaces due to uncontrolled and intense localized heating, leading to additional costs and safety concerns.
Innovation Solution
A heating device that uses a shell with a compartment for infrared radiation sources arranged in a symmetrical distribution, combined with a curved and convex reflective wall to focus heat on a specific area, and an electronic control unit for precise temperature management, allowing for controlled and localized heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional heat sources are used for adhesive removal, then heating intensity is sufficient to reach glass transition temperature, but temperature control is lost causing damage to panels and surrounding structures
Solution Approach 1:
The patent applies local quality by using multiple infrared radiation sources arranged in a symmetrical distribution pattern, each targeting specific zones. The curved and convex reflective wall focuses the radiation locally onto the adhesive layer between panels, creating intense localized heating only where needed rather than uniform heating across the entire panel assembly. This resolves the contradiction by concentrating thermal energy precisely at the adhesive interface while keeping surrounding panel temperatures controlled.
Solution Approach 2:
The patent implements feedback control through an electronic control unit that receives temperature signals from sensors positioned near the heating zone. The control unit continuously monitors the temperature and adjusts the power supplied to the infrared radiation sources accordingly, maintaining the temperature within a predetermined range. This feedback mechanism ensures sufficient heating to reach glass transition temperature while preventing excessive heat that would damage panels or underlying structures.
2Temperature
If conventional heat sources provide intense heating, then adhesive glass transition is achieved, but heat spreads to underlying panels and adhesive layers compromising sandwich structure integrity
Solution Approach 1:
The curved and convex reflective wall is specifically designed to focus infrared radiation onto the adhesive layer while preventing heat spread to surrounding areas. The symmetrical distribution of multiple radiation sources ensures uniform heating of the adhesive between panels without creating hot spots that would propagate to underlying structures. This localized heating approach achieves adhesive softening while preserving the integrity of the sandwich structure.
Solution Approach 2:
The patent replaces conventional contact-based heating methods with infrared radiation, which provides non-contact thermal energy transfer. This substitution allows precise control of heating depth and distribution, heating only the adhesive layer without mechanically transmitting heat to underlying panels. The infrared approach eliminates the heat spread problem inherent in conventional heating methods.
3Temperature
If conventional heating tools are used, then heating capability is provided, but versatility across different panel shapes and materials is limited
Solution Approach 1:
The patent achieves universality through a modular design where multiple infrared radiation sources can be arranged in different symmetrical patterns to accommodate various panel geometries. The curved and convex reflective wall design is adaptable to different panel shapes, and the electronic control unit can adjust heating parameters for different materials. This multi-functional configuration allows the same basic heating device to effectively treat diverse panel assemblies in automotive and industrial applications.
Solution Approach 2:
The patent incorporates dynamic adaptability through an electronic control unit that can adjust the power and operating parameters of each infrared radiation source independently. This dynamic control allows the system to adapt to different panel materials, thicknesses, and geometries by optimizing the heating pattern in real-time, providing versatility across various applications without requiring multiple specialized devices.
4Productivity
If mechanical removal methods are used, then panel removal is achieved, but damage occurs to both panel and underlying surface requiring restoration
Solution Approach 1:
The patent replaces mechanical removal methods (chisels, cutting tools) with thermal processing using infrared radiation. By heating the adhesive to its glass transition temperature, the adhesive loses its mechanical bonding properties, allowing panels to be removed without mechanical force. This substitution eliminates the damage to both panels and underlying surfaces that characterizes mechanical removal methods, while maintaining efficient panel removal capability.
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 removal of panels without damaging surrounding structures, ensuring the integrity of the panel and underlying surfaces, while providing a versatile, safe, and cost-effective solution for various materials and shapes.
Implementation Method 1
a generator (4) of infrared radiation, arranged in a compartment (3) delimited by at least one wall (5) that is transparent to infrared radiation
Implementation Method 2
a curved and convex reflective wall (7) which delimits the compartment (3) on the opposite side with respect to the transparent wall (5)
Implementation Method 3
The shape of the reflective wall enables a focusing of the infrared radiation when the sources are used close to the panel that is to be heated
Implementation Method 4
an apparatus (8) for measuring the temperature which is provided with at least one sensor (9) in order to carry out the measurement instant by instant of the temperature value assumed by the object to be heated
Data Source
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AI summary
A heating device, which comprises at least one shell (2) which defines internally a compartment (3) for accommodating a generator (4) of infrared radiation. The compartment (3) is delimited at least by a wall (5) that is transparent to infrared radiation, for delivering infrared radiation to the outside; the generator (4) comprises a plurality of sources of infrared radiation (6a, 6b) which have an elongated shape structure; such sources (6a, 6b) are arranged in parallel to each other within the compartment (3) with longitudinally symmetrical distribution. A first central source (6a) is interposed between respective lateral sources (6b), which are arranged closer to the transparent wall (5) with respect to the central source (6a); on the opposite side with respect to the transparent wall (5) the compartment (3) is delimited by a curved and convex reflective wall (7), longitudinally symmetrical, for conveying the infrared radiation delivered by the sources (6a, 6b) to an outside area adjacent to the transparent wall (5) and the localized heating of an object, arranged in the outside area.