Vaporizer Heating Assembly With Gradient Capillary Gap
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Solution Overview
Problem
Existing heating bodies in electronic vaporization devices suffer from low absorption and transmission efficiency of aerosol-generation substrates, leading to issues such as dry burning, carbon accumulation, and burnt flavor due to bubble formation on thin heating bodies.
Innovation Solution
A heating assembly comprising a first substrate with micropores and a second substrate with a gap forming a capillary effect, where the gap height changes in gradient to guide aerosol-generation substrate and prevent bubble stagnation, ensuring sufficient liquid supply and preventing dry burning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a thin heating body is used to improve liquid supplying capability, then liquid supply efficiency is improved, but bubbles are easily formed on the liquid absorbing surface which blocks liquid intaking and leads to dry burning
Solution Approach 1:
The heating body incorporates a porous layer with controlled pore size and porosity distribution. The porous structure allows liquid to be absorbed and transported through capillary forces while the pore distribution prevents bubble accumulation. Liquid can continuously supply to the heating surface through the porous network, maintaining reliable operation without dry burning even in thin heating bodies.
Solution Approach 2:
The porous layer has non-uniform pore size and porosity distribution across different regions. The pore characteristics are locally optimized: regions closer to the liquid supply have larger pores for efficient liquid intake, while regions near the heating surface have smaller pores to prevent bubble formation. This local quality variation resolves the contradiction between liquid supply capability and dry burning prevention.
2Productivity
If pore size and porosity are increased to implement sufficient liquid supplying, then liquid supply capability is improved, but liquid leakage risk increases
Solution Approach 1:
The porous layer employs spatially varying pore size and porosity. Larger pores and higher porosity are located in regions requiring strong liquid supply, while smaller pores and lower porosity are positioned in regions where liquid leakage must be prevented. This local differentiation allows the system to achieve sufficient liquid supply without compromising leakage control.
Solution Approach 2:
The invention addresses the pore size-leakage contradiction by introducing a spatial dimension to pore characteristics. Instead of using uniform pore size throughout, the pore dimensions vary across different depths and lateral positions within the porous layer, enabling simultaneous optimization of liquid supply and leakage prevention through three-dimensional pore architecture.
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 prevents bubble stagnation and ensures consistent liquid supply, enhancing vaporization efficiency and preventing dry burning by utilizing a gradient capillary force to drive fluid flow and discharge bubbles.
Implementation Method 1
the second surface and the third surface are arranged opposite one another so as to form therebetween a gap of changing height
Data Source
AI summary
A heating assembly for an electronic vaporization device includes: a first substrate having a first surface and a second surface arranged opposite one another; and a second substrate having a third surface and a fourth surface arranged opposite one another. The second surface and the third surface are arranged opposite one another so as to form therebetween a gap of changing height. A liquid inlet is formed on an edge of the first substrate, or by an edge of the first substrate with another component. The second substrate includes a plurality of second micropores fluidically communicating the gap and the fourth surface. The gap fluidically communicates the plurality of second micropores and the liquid inlet.