Integrated Ceramic Heating Assembly for Accurate Temperature Detection
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Solution Overview
Problem
Existing electronic cigarettes face inaccuracies in temperature detection due to the separate assembly of heating bodies and temperature sensing elements, leading to potential dry burning when tobacco liquid is depleted, resulting in unsatisfactory performance.
Innovation Solution
A heating assembly integrated with a heating body and a temperature sensing element, where the temperature sensing element, comprising a thermistor layer made of tungsten, molybdenum, and manganese, is formed on a ceramic substrate with a heating element, allowing for accurate atomization temperature detection and prevention of dry burning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the temperature sensing element is assembled separately from the heating body, then the assembly process is simple, but the temperature detection accuracy deteriorates
Solution Approach 1:
The temperature sensing element is integrated directly onto the heating body, forming a unified structure where the sensing element and heating element are positioned in close proximity. This merging ensures accurate temperature detection at the heating location while maintaining manufacturing simplicity through direct integration.
2Adaptability or versatility
If the temperature sensing element is positioned away from the heating body, then the sensing element has better positioning flexibility, but the temperature detection accuracy deteriorates
Solution Approach 1:
The sensing element is positioned directly on the heating body surface, eliminating positioning errors that would occur with separate assembly. This integration provides both accurate temperature measurement at the heating location and sufficient positioning flexibility for different device configurations.
3Device complexity
If separate assembly of heating body and temperature sensing element is used, then device complexity is reduced, but dry burning occurs when tobacco liquid is depleted
Solution Approach 1:
The integrated structure ensures the temperature sensing element and heating body work as a unified system, enabling real-time temperature monitoring at the heating location. This prevents dry burning by detecting temperature changes when tobacco liquid is depleted, while maintaining simple device architecture through direct integration.
Solution Approach 2:
The temperature sensing element provides real-time feedback on the heating body temperature to the control system. When tobacco liquid is depleted and temperature rises abnormally, the feedback mechanism triggers control actions to prevent dry burning, ensuring reliable operation.
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 integrated heating assembly ensures accurate detection of atomization temperature, preventing dry burning and enhancing user experience by automatically adjusting heating based on detected temperature.
Implementation Method 1
the temperature sensing element, comprising a thermistor layer made of tungsten, molybdenum, and manganese
Implementation Method 2
a heating element
Data Source
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AI summary
An exemplary heating assembly (14) includes a ceramic substrate (1421) having at least one surface, a heating element (1422) formed on the at least one surface, and a temperature sensing element (1423) formed on the at least one surface. The heating element (1422) includes a heating part (1427) and an electrode part (1424, 1425, 1426). The heating part is formed on the at least one surface, and the electrode part is arranged at two opposite ends of the heating part. The temperature sensing element includes a thermistor layer (1428) and an electrically connecting part. The thermistor layer is formed on the at least one surface. The electrically connecting part connects the thermistor layer, and the thermistor layer is insulated from the heating part.