Aerosol Generating Device Optical Detection with Polyhedral Light Guide
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Solution Overview
Problem
Existing aerosol generating devices struggle to accurately determine the presence or absence of a liquid aerosol generating substance and adjust power supplied to the heater accordingly.
Innovation Solution
Incorporating an optical sensor adjacent to a polyhedral-shaped light guide within the cartridge, which exposes at least one surface to the chamber containing the liquid aerosol generating substance, allowing for precise detection and enabling power control based on substance presence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional detection method is used, then the device structure remains simple, but the measurement precision of liquid aerosol substance presence is insufficient
Solution Approach 1:
A light guide is introduced as an intermediary component between the optical sensor and the liquid aerosol substance. The light guide transmits light from the optical sensor to the chamber, enabling indirect detection of the liquid substance through light interaction (absorption, scattering, or reflection) without requiring direct contact between the sensor and the substance, thus achieving accurate detection while maintaining structural simplicity
Solution Approach 2:
The mechanical detection approach is replaced with an optical detection system. Instead of using mechanical sensors or physical contact methods to detect liquid presence, the patent employs an optical sensor combined with a light guide to detect the liquid aerosol substance through optical properties (absorption, scattering, or reflection of light), thereby improving measurement precision without significantly increasing device complexity
2Loss of energy
If power is supplied to the heater without accurate detection, then the device operates continuously, but energy is wasted when liquid substance is absent
Solution Approach 1:
The optical sensor continuously monitors the presence of liquid aerosol substance in the chamber and provides feedback signals to the control system. Based on this feedback, the controller dynamically adjusts the power supply to the heater: enabling full power when liquid substance is detected and reducing or disabling power when the substance is absent, thereby preventing energy waste while maintaining reliable control
Solution Approach 2:
The power supply to the heater is made dynamic rather than static. The system transitions from continuous fixed-power operation to variable power operation that adapts to the detected liquid substance presence. The heater power is adjusted in real-time based on optical detection results, allowing the system to optimize energy consumption while maintaining operational reliability
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
Accurate determination of the liquid aerosol substance presence and adaptive power control, enhancing device performance and efficiency.
Implementation Method 1
a body including an optical sensor; and a cartridge to be coupled to the body and including a light guide having a shape of a polyhedral shape and a chamber to store a liquid aerosol generating substance
Data Source
AI summary
An aerosol generating device is provided. The aerosol generating device includes: a body including an optical sensor; and a cartridge to be coupled to the body and including a light guide having a polyhedral shape and a chamber to store a liquid aerosol generating substance, wherein the optical sensor is disposed adjacent to and facing the light guide while the cartridge is coupled to the body, and wherein the light guide is disposed at or adjacent to a lower end of the chamber such that at least one surface among a plurality of surfaces of the light guide is exposed to an inside of the chamber.