Variable Length Flow Connection for Electrical Heating Device Adaptability
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Solution Overview
Problem
Existing electrical heating devices struggle to adapt easily to different heating powers and operating voltages, particularly in applications where tolerance and flexibility in component thickness are required.
Innovation Solution
The electrical heating device features a first and second heating chamber with channel sections that can overlap and vary in length, allowing for a telescopic flow connection through the plane containing the electrical heating assembly. This configuration accommodates different thicknesses of PTC elements based on operating voltage, enabling adaptation to various heating power and voltage requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the heating device uses fixed thickness PTC elements, then the structure is simple and manufacturing is easy, but the device cannot adapt to different heating powers and operating voltages
Solution Approach 1:
The patent applies the dynamics principle by making the channel sections variable in length rather than fixed. The first and second channel sections can be adjusted individually or as a whole, allowing the flow connection length to vary. This dynamic adjustment capability enables the heating device to adapt to different PTC element thicknesses corresponding to different operating voltages (400V or 800V) and heating powers, while maintaining a relatively simple overall structure that can be configured for specific applications.
2Adaptability or versatility
If the channel sections are rigidly connected, then the structure is stable and easy to manufacture, but the device cannot accommodate tolerance variations in PTC element layers
Solution Approach 1:
The patent implements dynamics by designing the channel sections with variable length capability. The first channel section and second channel section can be adjusted to compensate for tolerance variations in PTC element layers. This allows the heating device to maintain proper electrical contact and heat extraction despite manufacturing tolerances, while still being manufacturable using standard processes for adjustable components.
3Adaptability or versatility
If the flow connection length is fixed, then the device structure is simple and stable, but the device cannot be adapted to different PTC element thicknesses for different operating voltages
Solution Approach 1:
The patent applies dynamics by making the flow connection length variable through adjustable channel sections. The first and second channel sections can be individually adjusted to change the overall flow connection length, accommodating different PTC element thicknesses required for 400V or 800V operation. This dynamic adjustment capability is achieved through a structured design that allows modification without excessive complexity.
Solution Approach 2:
The patent applies segmentation by dividing the flow connection into separate channel sections (first channel section and second channel section) that can be independently adjusted. This segmentation allows flexible configuration of the overall flow connection length to match different PTC element thicknesses, while maintaining modular construction that manages structural complexity.
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 variable length flow connection allows for flexible arrangement of heating devices of different thicknesses, ensuring reliable electrical contact and heat extraction while accommodating different configuration parameters such as heating power and voltage, thereby enhancing adaptability and performance.
Implementation Method 1
an electrical heating assembly provided between the first heating chamber and the second heating chamber and coupled to the first heating chamber and the second heating chamber in a heat-conducting manner
Implementation Method 2
the first heating chamber and the second heating chamber and an electrical heating assembly provided between the first heating chamber and the second heating chamber and coupled to the first heating chamber and the second heating chamber in a heat-conducting manner
Data Source
AI summary
An electrical heating device for heating a liquid medium includes a first heating chamber, a second heating chamber, and an electrical heating assembly which is provided between the first heating chamber and the second heating chamber and which is coupled to the first heating chamber and the second heating chamber in a heat-conducting manner. In order to provide an electrical heating device which can be easily adapted to different heating powers and/or operating voltages, the first heating chamber has a first channel section, and the second heating chamber has a second channel section. The first channel section and/or the second channel section form a flow connection between the two heating chambers which passes through the plane containing the electrical heating assembly and the length of which can be varied in a direction transverse to the plane containing the electrical heating assembly.