Induction Heating Element Buffer Area Thermal Expansion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Induction cooking devices face issues with thermal expansion of induction heating line elements, leading to deformation and potential short circuits due to uneven heating, which affects heating performance and safety.
Innovation Solution
Incorporating a buffer area with thermal compensation loops in the induction heating line element to absorb thermal expansion changes, maintaining constant external dimensions and minimizing movement relative to fastening elements, thereby preventing bulging and enhancing heating properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the induction heating element is rigidly fixed between fastening elements, then mounting stability is improved, but thermal expansion causes deformation and lifting away from the muffle wall
Solution Approach 1:
The induction heating element incorporates a buffer area with reduced rigidity that acts as a flexible zone, allowing the element to accommodate thermal expansion without rigid constraint. This flexible region absorbs dimensional changes while maintaining overall mounting stability and preventing deformation of the heated sections.
Solution Approach 2:
The patent changes the rigidity parameter of specific regions of the induction heating element by reducing material density or structural stiffness in the buffer area. This parameter modification allows the element to dynamically adapt its mechanical properties during heating cycles, accommodating thermal expansion while maintaining functional integrity.
2Shape
If the induction heating element is made flexible to accommodate thermal expansion, then deformation is reduced, but structural strength and short circuit prevention become compromised
Solution Approach 1:
The induction heating element is segmented into distinct functional zones: rigid heating sections that maintain structural integrity and prevent short circuits, and flexible buffer sections that accommodate thermal expansion. This segmentation allows each region to optimize its properties for its specific function while working together as a unified element.
Solution Approach 2:
Different regions of the induction heating element have different rigidity qualities - the buffer area has reduced rigidity to absorb thermal expansion, while the heating sections maintain high rigidity for structural strength and electrical isolation. This local differentiation of mechanical properties resolves the contradiction between flexibility and reliability.
3Reliability
If fastening elements are used to secure the induction heating element, then mounting reliability is improved, but thermal expansion causes lifting and warping between fastening points
Solution Approach 1:
The buffer area is pre-designed with reduced rigidity and increased compliance before heating begins. This preliminary structural preparation allows the element to naturally accommodate thermal expansion forces during heating cycles, preventing warping and lifting between fastening points while maintaining reliable mounting.
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 configuration ensures stable and efficient heating, reduces the risk of short circuits, and maintains optimal heating performance by compensating for thermal expansion, resulting in improved construction and operational safety.
Implementation Method 1
the induction heating element has at least a buffer area (16a, 26a) which is intended to at least partially compensate for at least a thermal expansion change of the induction heating element (14a), which is caused in particular by at least one thermal expansion
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to an induction cooking appliance (10a-b), in particular an induction oven, with at least one induction heating unit (12a-b) which has at least one induction heating element (14a-b). In order to provide a generic device with improved design characteristics, it is proposed that the induction heating element (14a-b) has at least one buffer area (16a-b) which is designed to at least partially compensate for at least a thermal expansion change of the induction heating element (14a-b).