Composite Heating Member for Electronic Atomizer Temperature Control
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Solution Overview
Problem
Existing electronic atomization apparatuses face challenges with heating members that have poor high-temperature resistance performance, leading to potential damage when the E-liquid supply is insufficient and the heating film reaches extremely high temperatures.
Innovation Solution
The introduction of a composite heating member comprising a first heating layer with a high temperature coefficient of resistance and a second heating layer with high high-temperature resistance performance, arranged in a stacked manner to enhance the overall high-temperature resistance and temperature controllability of the heating member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single-layer heating member with high temperature coefficient of resistance is used, then temperature controllability is improved, but high-temperature resistance performance deteriorates
Solution Approach 1:
The patent applies composite materials by combining a first heating layer (stainless steel mesh with high temperature coefficient of resistance >500 ppm/°C) and a second heating layer (electrothermal alloy with high high-temperature resistance) into a single heating member structure. This composite structure allows the first layer to provide temperature controllability through its high temperature coefficient, while the second layer provides protection against high-temperature damage, thus resolving the contradiction between temperature controllability and high-temperature resistance.
2Reliability
If a metal sheet/mesh with high density is used, then material consistency and reliability are improved, but temperature coefficient of resistance becomes low
Solution Approach 1:
The patent combines two different metal materials with complementary properties: a stainless steel mesh providing high density, material consistency, and high temperature coefficient of resistance (>500 ppm/°C), and an electrothermal alloy providing high high-temperature resistance. The composite structure allows both materials to contribute their advantageous properties, resolving the contradiction between material consistency and temperature coefficient of resistance.
3Reliability
If electrothermal alloy with low temperature coefficient of resistance is used, then high-temperature resistance is improved, but temperature controllability deteriorates
Solution Approach 1:
The patent creates a composite heating member where the electrothermal alloy layer (second heating layer) provides high-temperature resistance protection, while the stainless steel mesh layer (first heating layer) provides the high temperature coefficient of resistance needed for temperature controllability. The composite structure allows both functional requirements to be satisfied simultaneously by distributing different functions to different layers.
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 composite heating member achieves improved high-temperature resistance performance and enhanced temperature controllability, preventing damage from high temperatures and ensuring reliable operation of the electronic atomization apparatus.
Implementation Method 1
an aerosol-forming material is generally atomized in a resistance heating manner
Data Source
Figure 1~2
Figure 3~4
Figure 5~6(b)
AI summary
An electronic atomization apparatus (100), an atomizer (1), an atomization core (12), and a heating member (122) are provided. The heating member (122) includes a first heating layer (21) and a second heating layer (22). The first heating layer (21) includes a first surface (21a) and a second surface (21b) opposite to the first surface (21a). The second heating layer (22) is arranged on the first heating layer (21) and at least partially covers the first surface (21a) and/or the second surface (21b). The temperature coefficient of resistance of the first heating layer (21) is greater than that of the second heating layer (22). In the present disclosure, accurate temperature control is implemented while the heating efficiency is improved, thereby preventing dry puffing.