Capillary Tube Heater Assembly for Stable Aerosol Generation
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Solution Overview
Problem
Conventional heater assemblies in electronic aerosol provision systems, such as electronic cigarettes, often fail to provide efficient liquid supply to the heater element and exhibit airflow interactions that affect aerosol generation.
Innovation Solution
A heater assembly with a substrate, a heater layer, capillary tubes, and an airflow channel is designed to facilitate efficient liquid supply and airflow through the heater assembly, enhancing aerosol generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional heater assemblies are used, then the device structure is simple, but liquid supply efficiency to the heater element is insufficient
Solution Approach 1:
The heater assembly is segmented into distinct functional components: capillary tubes for liquid supply, airflow channels for air flow, and a heater element. This segmentation allows each component to perform its specific function efficiently, with capillary tubes dedicated to liquid transport and airflow channels dedicated to air flow, thereby improving overall liquid supply efficiency and aerosol generation performance.
2Reliability
If conventional heater assemblies are used, then manufacturing is simple, but aerosol generation consistency is poor due to uncontrolled airflow interactions
Solution Approach 1:
The heater assembly incorporates locally optimized structures including capillary tubes positioned at specific locations to deliver liquid precisely where needed, and airflow channels configured to control air flow patterns. This local quality approach ensures that liquid supply and air flow are optimized at critical locations, improving aerosol generation consistency by controlling interactions between liquid, air, and heat.
3Stability of the object's composition
If capillary tubes and airflow channels are integrated into the heater assembly, then liquid delivery uniformity improves, but manufacturing complexity increases
Solution Approach 1:
The capillary tubes and airflow channels are merged into a single integrated heater assembly structure with the heater element. This integration ensures that liquid delivery and air flow are coordinated and uniform across the heater surface, improving liquid delivery uniformity. The merged structure allows for controlled manufacturing processes where all components are formed or assembled together as a unified system.
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 ensures consistent and efficient aerosol production by ensuring uniform liquid delivery to the heater element and controlled airflow, improving the quality and consistency of the aerosol generated.
Implementation Method 1
An aerosol source for an aerosol provision system may thus comprise a heater having a heating element arranged to receive source liquid from the reservoir, for example through wicking/capillary action
Implementation Method 2
electrical power is supplied to the heating element to vaporize source liquid in the vicinity of the heating element
Implementation Method 3
air is drawn in through the inlet holes and past the aerosol source. There is a flow path connecting between the aerosol source and an opening in the mouthpiece so that air drawn past the aerosol source continues along the flow path to the mouthpiece opening, carrying some of the aerosol from the aerosol source with it
Data Source
AI summary
A heater assembly for an aerosol provision system, the heater assembly including: a substrate; a heater layer configured to generate heat when supplied with energy, the heater layer provided on a first surface of the substrate; one or more capillary tubes extending from another surface of the substrate through the heater layer provided on the first surface of the substrate; and an airflow channel extending from another surface of the substrate through the heater layer provided on the first surface of the substrate, the airflow channel configured to allow air to flow through the heater assembly. Also described is a cartomizer including the heater assembly, an aerosol provision system including the heater assembly, and a method for manufacturing the heater assembly.