Laminated Conductive Heating Element for Uniform Blade De-Icing
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Solution Overview
Problem
Existing conductive elements for heating systems, particularly in helicopter blades, face challenges in achieving uniform heat distribution and integration without deforming the blade, while also requiring a cost-effective and efficient manufacturing process.
Innovation Solution
A method involving the continuous extrusion and lamination of electrically insulating material strips around conductive elements, with neutral zones, to form channels that maintain even heat distribution and facilitate integration into mechanical devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal braids are surrounded by an insulating sheath and integrated into helicopter blades, then the de-icing system efficiency is improved, but the manufacturing process lacks control over thickness uniformity and heating surface homogeneity
Solution Approach 1:
The heating system is segmented into multiple parallel conductive elements (metal braids) arranged in a structured pattern within the insulating sheath. This segmentation allows for controlled distribution of heat sources while maintaining overall thickness uniformity through the standardized arrangement described in the patent.
Solution Approach 2:
The patent applies local quality by creating distinct zones within the insulating sheath: conductive zones containing metal braids for heat generation, and neutral zones providing thermal insulation. This local differentiation ensures homogeneous heating surfaces while maintaining controlled thickness throughout the structure.
2Manufacturing precision
If conductive elements are arranged in channels within the insulating sheath, then heat distribution uniformity is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent merges the functions of structural support, thermal insulation, and conductive element positioning into a single integrated insulating sheath structure. The neutral zones within the sheath simultaneously provide insulation and define channels for conductive elements, reducing manufacturing steps while ensuring uniform heat distribution.
Solution Approach 2:
The insulating sheath serves multiple functions: providing electrical insulation, thermal insulation through neutral zones, structural support, and positioning channels for conductive elements. This multi-functionality reduces the need for separate components, simplifying manufacturing while achieving uniform heat distribution.
3Adaptability or versatility
If the conductive member is designed for easy integration into helicopter blades, then the adaptability is improved, but the manufacturing cost and complexity increase
Solution Approach 1:
The insulating sheath is designed as a flexible structure with neutral zones that can adapt to the contours of helicopter blades. This flexible design allows easy integration into various blade geometries while maintaining a relatively simple manufacturing process using conventional extrusion and lamination techniques.
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 ensures uniform heat distribution and efficient integration into helicopter blades, while being cost-effective and adaptable to varying widths and pitches, enhancing the heating system's performance.
Implementation Method 1
The creation of a heating system is carried out by a plurality of metal braids connected to an electrical circuit, which will heat the metal braids by the Joules effect.
Implementation Method 2
continuously extrude two strips of electrically insulating material, and superimpose them one on top of the other and on either side of the conductive elements
Implementation Method 3
laminate the neutral zones, which allows bonding the two strips between them and to form channels
Data Source
Figure 1~2
AI summary
The invention relates to a method for manufacturing a conductive component (1) for a heating system comprising a sheath (2) made of electrically insulating material, said sheath (2) comprising at least two longitudinally extending conductive elements (3) bordered on either side by neutral zones (4) not enclosing conductive elements (3), said conductive elements (3) being arranged lengthwise in parallel channels (5). According to the invention, the method comprises the steps of: - continuously extruding two strips (20a, 20b) of electrically insulating material and superimposing them one on top of the other and on either side of the conductive elements (3); and; - laminating the neutral zones (4).