Porous Vaporization Core with Liquid Storage and Locking Layers
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Solution Overview
Problem
Ceramic vaporization cores in electronic vaporization devices suffer from low e-liquid guiding rates, dry heating failures, and short service life, limiting their comprehensive performance.
Innovation Solution
A porous body with alternating layers of liquid storage and liquid locking advantage layers, where the liquid storage advantage layers have a high porosity and large pore size, and the liquid locking advantage layers have a low porosity and small pore size, is used to enhance the vaporization core's performance by improving heat and mass transfer driving forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a ceramic vaporization core is used, then the device structure is simple and easy to manufacture, but the liquid guiding rate is low and the service life is short
Solution Approach 1:
The vaporization core is segmented into multiple functional layers (liquid storage layer with high porosity 60-80% and liquid locking layer with low porosity 30-50%). This segmentation allows each layer to perform its specific function optimally, resolving the contradiction between manufacturing simplicity and liquid guiding performance by creating a structured multi-layer ceramic system that maintains ease of manufacture while significantly improving liquid guidance.
Solution Approach 2:
Different regions of the vaporization core are given different local qualities through the multi-layer structure. The liquid storage layer has high porosity for efficient liquid absorption and transport, while the liquid locking layer has low porosity to prevent liquid leakage and maintain stable vaporization. This local differentiation resolves the contradiction by optimizing liquid guiding in specific zones without compromising overall manufacturability.
2Ease of manufacture
If a ceramic vaporization core is used, then the manufacturing process is straightforward, but the device is prone to dry heating failure
Solution Approach 1:
The vaporization core is divided into liquid storage and liquid locking layers that work together to ensure continuous liquid supply to the heating element. The liquid storage layer's high porosity ensures adequate liquid reservoir, while the liquid locking layer's low porosity prevents liquid depletion, thereby preventing dry heating failure while maintaining straightforward manufacturing through ceramic fabrication processes.
Solution Approach 2:
The liquid locking layer acts as a protective barrier that prevents liquid from being depleted too quickly, providing a cushioning effect that ensures continuous liquid supply to the heating element. This beforehand cushioning prevents dry heating failure by maintaining liquid presence in advance, while the overall structure remains manufacturable using standard ceramic processes.
3Device complexity
If a ceramic vaporization core is used, then the device structure is simple, but the service life is short
Solution Approach 1:
The segmented multi-layer structure distributes mechanical and thermal stresses across different layers, preventing localized failure and extending service life. The liquid storage and locking layers work synergistically to maintain stable operation conditions, reducing degradation over time while keeping the overall device structure relatively simple and manufacturable.
Solution Approach 2:
The vaporization core employs a composite ceramic structure with different porosity characteristics in each layer. This composite approach combines the benefits of high porosity for liquid supply with low porosity for liquid retention, creating a more durable system that resists thermal cycling and mechanical stress, thereby extending service life without significantly increasing 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 porous body design significantly enhances the liquid guiding rate and vaporization efficiency, reducing the risk of e-liquid explosion and extending the service life of the vaporization core.
Implementation Method 1
the liquid storage advantage layers have a high porosity and large pore size
Implementation Method 2
the liquid locking advantage layers have a low porosity and small pore size
Implementation Method 3
An energized vaporization core can generate heat to heat and vaporize the liquid aerosol-generation substrate
Implementation Method 4
improving heat and mass transfer driving forces
Data Source
AI summary
A porous body for an electronic vaporization device includes: a first surface; a second surface opposite to the first surface; and at least two unit layers sequentially arranged along a direction from the first surface to the second surface, one unit layer of the at least two unit layers comprising at least a liquid storage advantage layer or a liquid locking advantage layer, and each unit layer of a remainder of the at least two unit layers comprising a liquid storage advantage layer and a liquid locking advantage layer combined with the liquid storage advantage layer.