Aerosol Heater Readiness Indication Using Dynamic Heating Rules
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Solution Overview
Problem
Aerosol generating devices face challenges in accurately indicating when they are ready for use due to varying parameters such as time, battery level, temperature, and environmental conditions, leading to potential under or over heating of the aerosol-generating consumable and a poor user experience.
Innovation Solution
The device incorporates a heating chamber, temperature measuring means, and control circuitry that stores rules for operating the heater and indicator, allowing it to adapt to changing parameters by selecting appropriate heating parameters and signaling readiness based on both temperature and initialization heating time, ensuring optimal user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the device uses a simple temperature threshold to indicate readiness, then the device complexity is reduced, but the reliability of indicating true readiness is compromised due to varying environmental conditions and battery levels
Solution Approach 1:
The patent implements dynamic heating rules that adapt to changing conditions (battery level, ambient temperature, consumable type) rather than using a fixed temperature threshold. The control circuitry selects from multiple heating rules based on current parameters, making the system dynamically responsive to environmental variations while maintaining reliable readiness indication.
Solution Approach 2:
The system changes multiple parameters simultaneously (temperature threshold, heating duration, power level) based on detected conditions. Instead of relying on a single temperature parameter, the system adjusts combinations of parameters according to the selected heating rule, which varies based on battery level, ambient temperature, and other factors.
2Productivity
If the device heats to a fixed temperature threshold, then the heating process is simple and fast, but it may cause underheating or overheating due to varying environmental conditions and battery levels
Solution Approach 1:
The patent employs dynamic heating rules that adjust heating parameters in real-time based on detected conditions. The control circuitry monitors battery level, ambient temperature, and other parameters to select appropriate heating rules, enabling the system to maintain precise temperature control while adapting to varying conditions during the heating process.
Solution Approach 2:
The system performs preliminary assessment of conditions (battery level, ambient temperature, consumable type) before initiating heating. Based on this preliminary information, it pre-selects an appropriate heating rule that will achieve the desired temperature precision for the specific conditions, preventing both underheating and overheating.
3Reliability
If the device uses multiple parameters (time, temperature, battery level) to determine readiness, then the reliability of readiness indication is improved, but the device complexity increases due to multiple sensors and control logic
Solution Approach 1:
The control circuitry serves multiple functions: it monitors temperature, tracks heating duration, assesses battery level, detects ambient conditions, and selects appropriate heating rules. This multi-functional approach consolidates multiple control tasks into a single control unit, reducing overall system complexity while maintaining reliable readiness indication based on multiple parameters.
Solution Approach 2:
The system manages multiple parameters (temperature, time, battery level, ambient temperature) through a unified control logic that selects from predefined heating rules. Each rule contains coordinated parameter changes, allowing the system to reliably indicate readiness based on multiple parameters without requiring complex independent control for each parameter.
4Reliability
If the device waits for complete heating before indicating readiness, then the consumable is properly prepared, but the user experience is degraded due to longer waiting time
Solution Approach 1:
The system performs preliminary heating to a readiness temperature that is sufficient for immediate use, rather than waiting for complete heating to the maximum temperature. The control circuitry monitors multiple parameters and indicates readiness when the consumable has been heated sufficiently according to the selected rule, reducing user waiting time while maintaining adequate preparation quality.
Solution Approach 2:
The patent implements dynamic heating rules that can indicate readiness at different stages of the heating process based on conditions. Some rules may indicate readiness when a temperature threshold is reached, while others may require additional heating duration. This dynamic approach allows the system to balance preparation quality with user waiting time based on the specific conditions and selected rule.
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 solution ensures the aerosol generating device is correctly notified when it is ready for use, preventing overheating or underheating, and providing a consistent and optimal user experience across different conditions.
Implementation Method 1
a heater arranged, in use, to heat the heating chamber
Implementation Method 2
a temperature measuring means arranged to measure the temperature of the heater or heating chamber
Data Source
Figure 1
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Figure 4~5
AI summary
The present disclosure relates to an aerosol generating device (1) comprising a heating chamber (2) arranged to hold an aerosol generating medium (5); a heater (6) arranged, in use, to heat the heating chamber (2); a temperature measuring means (7) arranged to measure the temperature of the heater or heating chamber; at least one indicator (11-14) configured to indicate when the measured temperature has reached a use temperature and/or when an initialisation heating time has elapsed; a memory (3) storing one or more rules, each rule defining an operating process of the heater and the indicator; control circuitry configured to select a rule stored in the memory (3) and operate the heater (6) and indicator (11-14) according to the selected rule, such that the indicator (11-14) is operated to indicate when the measured temperature has reached a use temperature and/or when an initialisation heating time has elapsed, thereby signalling when the aerosol generating device is ready for use.