Embedded Sheet Heater Assembly for Dry-Burn-Resistant E-Cigarettes
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Solution Overview
Problem
Existing electronic cigarettes face challenges with heating wire fastening, leading to low atomization efficiency and frequent dry burning due to exposed heating wire surfaces.
Innovation Solution
A heating assembly with a sheet heating portion embedded in a porous body, ensuring maximum surface contact and efficient heat dissipation, utilizing a porous body with a receiving groove for the heating element to enhance atomization efficiency and prevent dry burning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heating wire is wound around a fiber rope, then the heating wire can be positioned in the atomizer, but the heating wire surface is exposed without contact, leading to low atomization efficiency and frequent dry burning
Solution Approach 1:
The patent uses a porous body (such as porous ceramic or porous metal) as the heating assembly core structure. The porous material allows e-liquid to be absorbed and transported through its internal channels to the heating wire, ensuring continuous liquid supply and preventing dry burning. The heating wire is embedded within the porous body, maximizing contact between the heating surface and e-liquid while maintaining structural simplicity.
Solution Approach 2:
The invention combines different materials with complementary properties: the porous body (ceramic or metal) provides structural support and liquid transport, while the heating wire (metallic) provides heating function. This composite structure resolves the contradiction by integrating both functions into a unified system where the heating wire is securely positioned within the porous matrix, eliminating fastening difficulties while ensuring reliable atomization.
2Device complexity
If the heating wire is wound around the fiber rope, then the structure is simple, but a considerable part of the heating wire surface is exposed without contact, causing low atomization efficiency
Solution Approach 1:
The porous body serves as both the structural framework and the liquid delivery system. Its porous structure enables capillary action to draw e-liquid from the reservoir to the heating wire surface, ensuring that the heating wire is continuously supplied with liquid for efficient atomization. This eliminates the need for complex external liquid delivery mechanisms while maximizing heating wire utilization.
Solution Approach 2:
The heating wire is nested within the porous body structure, with the porous material surrounding and supporting the heating element. This nested arrangement ensures that the heating wire is fully utilized for atomization while the porous body provides protective enclosure and liquid supply, achieving high atomization efficiency without increasing overall structural complexity.
3Ease of manufacture
If the heating wire is exposed without contact with the fiber rope, then fastening is simpler, but dry burning occurs frequently
Solution Approach 1:
The porous body's internal capillary structure automatically transports e-liquid to the heating wire surface through capillary action, eliminating the need for complex pumping or wicking mechanisms. The heating wire is positioned within the porous matrix, ensuring continuous liquid supply and preventing dry burning. This integrated design simplifies manufacturing while reliably preventing dry burning incidents.
Solution Approach 2:
The porous body performs the liquid delivery function autonomously through its inherent capillary properties, without requiring external power sources or control systems. The structure self-regulates liquid flow to the heating wire based on demand, ensuring continuous wetting and preventing dry burning. This self-service mechanism simplifies the overall system while improving reliability.
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 embedded heating element design improves atomization efficiency, reduces heat loss, and minimizes dry burning occurrences, providing a firm coupling and smoother e-liquid/smoke movement.
Implementation Method 1
a porous body for adsorbing the e-liquid from a liquid storage cavity of the atomizer
Implementation Method 2
a heating element embedded in the porous body, the heating element comprising an elongated sheet heating portion which is embedded in the porous body
Data Source
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AI summary
The present invention relates to an electronic cigarette and a heating assembly thereof. The heating assembly comprise: a porous member for absorbing an e-liquid and at least one heating member for heating and atomizing the e-liquid absorbed by the porous member. The at least one heating member comprises an elongated sheet-shaped heating portion. At least part of the sheet-shaped heating portion is partially embedded in the porous member. The porous member comprises an atomization surface corresponding to the at least part of the sheet-shaped heating portion. In the present invention, a heating member of a heating assembly comprises a sheet-shaped heating portion embedded in a porous member, such that a majority of a surface of the sheet-shaped heating portion is in contact with the porous member, thereby improving heat dissipation efficiency, and ensuring secure connection.