E-cigarette Heating Element Resistance Gradient for Uniform Atomization
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Solution Overview
Problem
Electronic cigarette heating elements with elongated heating portions prone to heat accumulation at bending points, leading to uneven heat distribution and atomization issues.
Innovation Solution
A heating assembly with a capillary structure and elongated heating element featuring flat and bending portions, where the resistance of the bending portions is smaller than the flat portions, and the heating element is partially embedded in a porous body to enhance heat distribution and atomization efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the elongated heating portion is bent multiple times to generate heat uniformly, then the heating coverage is improved, but heat accumulates at bending portions causing excessively high temperature
Solution Approach 1:
The heating element is designed with different resistance characteristics at different locations: the bending portions have smaller resistance while the flat portions have larger resistance. This local differentiation of electrical properties ensures that heat is generated more at the flat portions and less at the bending portions, preventing heat accumulation while maintaining uniform heating coverage.
Solution Approach 2:
The invention changes the electrical resistance parameter along the length of the heating element. By making the resistance of bending portions smaller than that of flat portions, the heat generation (which is proportional to resistance) is adjusted locally to prevent excessive temperature at bent sections while maintaining overall uniform heating.
2Productivity
If the heating element is embedded in the porous body, then atomization efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The heating element and porous body are combined into a single integrated structure where the heating element is embedded within the porous body. This merging of components simplifies the overall structure and reduces the number of separate parts that need to be assembled, thereby reducing manufacturing complexity while maintaining high atomization efficiency.
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 solution effectively reduces heat accumulation in bending portions, ensuring more uniform heat distribution and improved atomization efficiency, preventing dry burning and enhancing the overall performance of the electronic cigarette.
Implementation Method 1
a capillary structure configured for adsorbing e-liquid
Implementation Method 2
at least one heating element configured for heating and atomizing the e-liquid adsorbed into the capillary structure
Implementation Method 3
the porous body includes an atomizing surface corresponding to the at least partial section
Data Source
Figure 1~2
Figure 3~5
Figure 6~9
AI summary
An electronic cigarette and a heating assembly (12) and a heating member (122) thereof. The heating assembly (12) comprises a capillary structure for absorbing an e-liquid and at least one heating member (122) for heating and atomizing the e-liquid absorbed by the capillary structure. The heating member (122) comprises an elongated heating portion. The elongated heating portion comprises at least one straight portion (1221) and at least one curved portion (1222) which are connected sequentially. A resistance at the at least one curved portion (1222) is less than a resistance at the at least one straight portion (1221).