Planar Heater Airflow Array for Smoking Substitute Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing smoking substitute devices face issues with e-liquid leakage due to leakage paths between components and the manufacturing complexity of consumables, which affects efficiency and cost.
Innovation Solution
A smoking substitute device design featuring a planar heater with a controlled airflow system, including multiple airflow sub-inlets arranged in an array to optimize airflow and heating efficiency, and a movable electrical bridging element system for reliable power connection, using an electrically conductive porous material for the heater and bridging elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single airflow inlet is used in existing smoking substitute devices, then the device structure is simple, but localized cooling occurs on the heater reducing aerosol generation efficiency
Solution Approach 1:
The single airflow inlet is segmented into multiple airflow sub-inlets arranged in an array. This segmentation allows the airflow to be distributed across different locations, preventing localized cooling of the heater while maintaining overall structural simplicity through the systematic arrangement of sub-inlets.
Solution Approach 2:
The airflow inlet structure transitions from a single-point inlet to a multi-point array distribution system. This dimensional change from one-dimensional to two-dimensional airflow distribution enables uniform cooling across the heater surface without concentrating cooling effects in one location.
2Ease of manufacture
If fixed electrical connection methods are used in existing smoking substitute devices, then the manufacturing process is complex and time-consuming, but connection reliability is achieved
Solution Approach 1:
The electrical bridging elements are made movable rather than fixed, allowing them to be inserted and connected during assembly. This dynamic connection method simplifies the manufacturing process by enabling easier assembly and disassembly while maintaining reliable electrical connections through the conductive porous material structure.
Solution Approach 2:
The electrical bridging elements are made from electrically conductive porous material that allows for flexible insertion and connection. The porous structure provides both mechanical flexibility for ease of assembly and electrical conductivity for reliable power transmission, resolving the contradiction between manufacturing ease and connection reliability.
3Reliability
If e-liquid leakage paths are present between components in existing smoking substitute devices, then device assembly is simple, but e-liquid leakage occurs affecting performance
Solution Approach 1:
The electrically conductive porous material serves dual functions: electrical conduction and e-liquid management. The porous structure allows controlled interaction with e-liquid while preventing uncontrolled leakage paths between components, improving reliability without significantly increasing structural complexity.
Solution Approach 2:
The use of composite structures combining conductive materials with porous properties creates a multi-functional component that addresses both electrical connection and e-liquid containment needs. This composite approach prevents leakage paths while maintaining assembly simplicity through integrated component design.
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 controlled airflow system reduces localized cooling and enhances aerosol generation efficiency, while the movable bridging elements simplify manufacturing and ensure reliable electrical connections, leading to improved device performance and cost-effectiveness.
Implementation Method 1
a heating device, which heats the e-liquid to produce an aerosol (or 'vapour') which is inhaled by a user through the mouthpiece
Implementation Method 2
the heater includes a pair of electrical connection regions for electrical connection to a power supply
Data Source
AI summary
A smoking substitute device is described. The device includes an airflow inlet; an airflow outlet; and a flow path connecting the airflow inlet with the airflow outlet and for directing airflow from the airflow inlet to the airflow outlet. The device also includes a planar heater for aerosol generation, wherein the planar heater is located within the flow path. The airflow inlet includes a plurality of airflow sub-inlets, thereby reducing controlling airflow onto the heater.