Capillary Wick Airflow Layout for Aerosol Particle Control
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Solution Overview
Problem
Existing electrically heated smoking systems face challenges in managing airflow and aerosol flow, leading to particle size inconsistencies and liquid condensation, which affect the smoking experience and efficiency.
Innovation Solution
A smoking system with a capillary wick for liquid vaporization, guided airflow routes, and an impactor to control aerosol particle size, using guides and housing shapes to manage airflow and aerosol flow, reducing particle size and condensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If airflow is not properly managed in existing smoking systems, then liquid condensation occurs and particle size becomes inconsistent, but adding complex flow management structures increases device complexity
Solution Approach 1:
The air inlet is divided into multiple segments: a first air inlet positioned upstream of the capillary wick and a second air inlet positioned downstream. This segmentation allows independent control of airflow at different stages of aerosol formation, enabling precise particle size management without requiring overly complex single-structure solutions.
Solution Approach 2:
A guide structure is introduced as an intermediary element between the air inlets and the capillary wick/heater assembly. This guide channels and directs the airflow from the first and second air inlets, mediating the interaction between air and aerosol to control particle size while maintaining a relatively simple overall device structure.
2Productivity
If heating power is increased to vaporize liquid more effectively, then aerosol generation improves, but energy consumption increases
Solution Approach 1:
The first air inlet provides pre-cooling air to the system before the air reaches the heating zone. This preliminary action of introducing cooler air upstream helps to control the temperature gradient and prevents excessive heating, thereby reducing energy consumption while maintaining effective aerosol generation.
Solution Approach 2:
The system utilizes changes in air temperature and flow parameters by introducing air at different positions (upstream and downstream of the capillary wick). This parameter control allows optimization of the vaporization process, achieving good aerosol generation with reduced heater power requirements.
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 system effectively controls aerosol particle size and reduces liquid condensation, enhancing the smoking experience and improving system efficiency with energy savings.
Implementation Method 1
a capillary wick for holding liquid
Implementation Method 2
the liquid in the at least one portion of the capillary wick is vaporized by the heater to form a supersaturated vapour
Implementation Method 3
at least one heater for heating the liquid in at least a portion of the capillary wick
Implementation Method 4
During the flow, the vapour condenses to form an aerosol in the chamber
Data Source
Figure 1
Figure 2a~2c
Figure 3a~3b
AI summary
There is provided a smoking system comprising a capillary wick for holding liquid, at least one air inlet, at least one air outlet and a chamber between the air inlet and air outlet. The air inlet, the air outlet and the chamber are arranged so as to define an air flow route from the air inlet to the air outlet via the capillary wick so as to convey aerosol formed from the liquid to the air outlet. The smoking system further includes at least one guide for channeling the air flow in the air flow route, so as to control particle size in the aerosol. The smoking system may further comprise at least one heater for heating the liquid in at least a portion of the capillary wick to form the aerosol.