Segmented Ribbon Heating Conductor for Variable Heat Distribution
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Solution Overview
Problem
Existing cooking appliances require multiple separate heating conductors to achieve different heating outputs, which complicates the heating up process and is inefficient.
Innovation Solution
A single strip-shaped heating conductor with multiple sections, each having a different heating power per unit area, allowing for flexible and variable heat output distribution, with meandering ring-like windings arranged concentrically and radially to optimize heat transfer and reduce overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate heating conductors are used to achieve different heating outputs, then heating flexibility is improved, but device complexity increases
Solution Approach 1:
The heating conductor is divided into multiple sections along its length, where each section has different heating power per unit area. This segmentation allows different zones of the heating element to provide different heating outputs, achieving heating flexibility without requiring multiple separate heating conductors. The first heating conductor section has a first heating power per unit area, while the second heating conductor section has a second heating power per unit area that differs from the first.
Solution Approach 2:
Multiple heating functions are merged into a single heating conductor strip. Instead of using separate heating conductors for different heating outputs, the invention combines multiple heating sections with different power densities into one continuous strip-shaped conductor, reducing device complexity while maintaining heating versatility.
2Productivity
If higher heat output is used to intensify parboiling process, then cooking speed is improved, but risk of overheating increases
Solution Approach 1:
Different sections of the heating conductor are designed with different heating power per unit area to match the local heat requirements of the cooking vessel. The first heating conductor section provides a first heating power per unit area, while the second heating conductor section provides a second heating power per unit area. This local quality variation allows intensive heating where needed while providing gentler heating in other areas, enabling faster cooking without excessive overheating risk.
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 enables efficient, flexible, and targeted heat distribution, improving the parboiling process by providing higher heat capacity in outer areas and reducing cooking time while avoiding overheating, thus enhancing energy utilization and cooking efficiency.
Implementation Method 1
a heating element (8, 9, 10, 11) for a cooking appliance (1), with a heating conductor (16) in the form of a strip, which has an electrical connection (17a) at a first end (16a) and a second electrical connection (17b) at a second end (16b)
Implementation Method 2
This heat transfer by heat radiation and heat conduction is particularly favored by this advantageous exemplary embodiment of the invention with regard to improved heat transfer
Implementation Method 3
This heat transfer by heat radiation and heat conduction is particularly favored by this advantageous exemplary embodiment of the invention with regard to improved heat transfer
Data Source
Figure 1~2
Figure 3
Figure 4~6
AI summary
The invention relates to a heating element (8) for a cooking appliance (1), comprising a ribbon-shaped heating conductor (16) having a first end (16a) and a second end (16b), wherein the heating conductor (16) has a first heating conductor section (18) having a first heating power per unit area, and at least one second heating conductor section (19) adjoining the first heating conductor section (18) having a second heating power different from the first heating power per unit area. The invention also relates to a cooking appliance (1).