Continuous Mode Heater Assembly for Aerosol Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional aerosol-generating devices, such as e-cigarettes, face issues with e-liquid leakage due to component malfunctions and thermal deformation caused by high operating temperatures, leading to inefficient vaporization and waste of excess vapors between puffs.
Innovation Solution
A heater assembly with a condenser that condenses excess vapors and returns at least a portion of the condensate back into the reservoir, operating at lower temperatures to reduce thermal stress and enable continuous vaporization, while using a non-porous condenser placed near the heater element to enhance condensate return efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional high-temperature heater elements (250-300°C) are used to vaporize e-liquid, then complete volatilization of all constituents is achieved, but thermal deformation of components and e-liquid leakage occur due to high temperature effects
Solution Approach 1:
The patent changes the operating temperature parameter from conventional 250-300°C to a lower range of 80-240°C (preferably 120-200°C, more preferably 150-180°C). This parameter change reduces thermal stress on components, preventing deformation and leakage while still achieving effective vaporization of e-liquid constituents.
Solution Approach 2:
The patent utilizes phase transition (vaporization) at lower temperatures by optimizing the heater element design and e-liquid composition. The heater operates in a continuous mode maintaining steady-state vaporization at reduced temperatures, avoiding the need for high-temperature pulsed operation while still achieving complete volatilization of e-liquid components.
2Use of energy by moving object
If the heater is operated only during puffs using puff detection systems, then energy consumption is reduced, but excess vapors are wasted and the device requires complex control systems
Solution Approach 1:
The heater element operates in continuous mode rather than being switched on and off with each puff. This continuous operation maintains steady-state vaporization, eliminating the waste of excess vapors that occurs during startup and shutdown cycles, while the lower operating temperature keeps energy consumption acceptable.
Solution Approach 2:
The patent converts what would normally be wasted excess vapors into a beneficial resource by designing the system to operate continuously at lower temperatures, where the vapor generation rate naturally matches or exceeds demand without creating harmful waste products or requiring complex vapor recovery systems.
3Device complexity
If the heater operates in pulsed mode between puffs, then energy is conserved, but the heater requires complex puff detection systems and control circuitry
Solution Approach 1:
The patent extracts and eliminates the puff detection system and associated control circuitry by transitioning to continuous heater operation. This simplification removes the need for sensors, control logic, and switching mechanisms while the lower operating temperature ensures energy consumption remains within acceptable limits.
4Device complexity
If conventional e-liquid reservoirs are used without condensate recovery, then device structure is simple, but e-liquid leakage occurs and excess vapors are lost
Solution Approach 1:
The system implements self-service through passive condensate recovery where excess vapors that would otherwise be wasted naturally condense and return to the reservoir. This self-regulating mechanism prevents e-liquid leakage by maintaining proper liquid levels without requiring active pumps or complex control systems.
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 reduces the risk of leakage and thermal deformation, allows continuous operation of the heater, and recovers excess vapors, improving the efficiency and reducing the need for puff detection systems, making the device easier to manufacture and use.
Implementation Method 1
a condenser (16), for condensing excess vapours generated during use of the heater assembly
Implementation Method 2
an electrical heater is used to vaporize an aerosol-generating liquid
Data Source
AI summary
A heater assembly for an aerosol-generating system is provided, including a heater element; a reservoir including aerosol-generating liquid; and a condenser configured to condense excess vapors generated in the heater assembly, such that condensate is at least partially conveyed back into the reservoir. A method of manufacturing a heater assembly for an aerosol-generating system is also provided.