Porous Liquid Guiding Member for Leak-Controlled Aerosol Atomization
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Solution Overview
Problem
Existing aerosol generating systems face issues with aerosol-forming substrate leakage, dry burning, coking, and insufficient aerosol production due to the use of porous ceramics with small pores that hinder substrate transmission to the heating member.
Innovation Solution
A liquid guiding member with multiple areas, where the average pore radius and porosity gradually decrease from the first area to the i-th area, ensuring a higher flow velocity at the first area and reducing leakage risk, while maintaining sufficient substrate transmission to the heating member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If porous ceramics with large pores are used as the liquid guiding member, then the storage space is increased, but the aerosol-forming substrate leakage occurs
Solution Approach 1:
The liquid guiding member is divided into multiple porous core layers with different pore sizes. The first porous core layer (farther from heating member) has larger pores for storage, while subsequent layers have progressively smaller pores to control leakage, segmenting the function across layers
Solution Approach 2:
Different regions of the liquid guiding member have different pore characteristics. The region farther from the heating member has larger pores for storage, while the region adjacent to the heating member has smaller pores for leakage control, applying local quality variation
2Reliability
If porous ceramics with small pores are used as the liquid guiding member, then the substrate leakage is reduced, but the substrate transmission is insufficient causing dry burning and coking
Solution Approach 1:
The liquid guiding member is divided into multiple porous core layers with different pore sizes. The first porous core layer (farther from heating member) has larger pores for storage and initial transmission, while subsequent layers have progressively smaller pores to control leakage, ensuring sufficient substrate reaches the heating member
Solution Approach 2:
Different regions of the liquid guiding member have different pore characteristics. The region farther from the heating member has larger pores for storage and transmission, while the region adjacent to the heating member has smaller pores for leakage control, optimizing both transmission and leakage prevention locally
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
This design effectively reduces the risk of substrate leakage and ensures adequate substrate transmission, preventing dry burning and insufficient aerosol production, thereby enhancing the performance of the aerosol generating system.
Implementation Method 1
the flow and transmission of the aerosol-forming substrate in the porous core layer of the liquid guiding member is characterized by the effective performance index E
Data Source
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AI summary
A liquid guiding member (31) is provided. The liquid guiding member (31) works in cooperation with a heating member (32) for atomizing an aerosol-forming substrate. The liquid guiding member (31) is divided into multiple areas. The area farthest from the heating member (32) is defined as a first area, an area adjacent to the heating member (32) is defined as the i-th area, and the area between the first area and the i-th area is defined as the x-th area, wherein the flow velocity Q of the aerosol-forming substrate in the first to i-th areas satisfies: Q1≥Qi, and Q1>Qx, 1<x<i, i being a positive integer and i≥2. The liquid guiding member (31), atomizing core (30), atomizer (110), and aerosol generating system (100) provided can not only reduce the risk of leakage of the aerosol-forming substrate, but also avoid the occurrence of dry burning, coking, or aerosol insufficiency.