Thermal Compression in Aerosol Heating Chambers for Substrate Shrinkage
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Solution Overview
Problem
Aerosol substrates in existing heated substrate aerosol generation devices lose structural integrity during heating, leading to inconsistent heating and safety risks due to potential removal of hot substrates.
Innovation Solution
Incorporating compressing elements that change shape above a threshold temperature to extend into the heating chamber, securing the aerosol substrate and improving heat transfer while preventing removal during heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the aerosol substrate is heated during operation, then aerosol generation is achieved, but the substrate loses structural integrity and shrinks leading to inconsistent heating
Solution Approach 1:
The compressing element changes its physical state or dimensions in response to temperature changes, transitioning from a relaxed state at lower temperatures to a compressed state at higher temperatures. This parameter change allows the element to automatically adapt to the heated substrate, maintaining contact and compensation for substrate shrinkage without requiring additional control mechanisms.
Solution Approach 2:
The compressing element is configured to automatically compress the heated aerosol substrate through its own temperature-induced dimensional changes, without requiring external actuation or control systems. The element serves itself by using the heat generated during normal operation to trigger its compression action, thereby self-regulating the heating process and compensating for substrate shrinkage.
2Productivity
If the aerosol substrate is heated to generate aerosol, then aerosol production is achieved, but the hot substrate poses safety risks if removed during operation
Solution Approach 1:
The compressing element acts as an intermediary between the heating chamber and the aerosol substrate, physically blocking access to the hot substrate while allowing heat transfer to occur. This mediator prevents direct contact between the user and the hot substrate, eliminating the safety hazard while maintaining the aerosol generation function.
Solution Approach 2:
The high temperature of the substrate, which initially represents a safety hazard, is utilized beneficially to trigger the compression action of the temperature-responsive element. The heat that could cause harm is converted into the activating mechanism that secures the substrate, turning the harmful thermal energy into a protective function.
3Quantity of substance
If the aerosol substrate shrinks during heating, then material density increases, but heat transfer becomes inconsistent
Solution Approach 1:
The compressing element transitions from a static to a dynamic configuration in response to substrate shrinkage. As the substrate shrinks and heats, the compressing element automatically adjusts its position and compression force, maintaining optimal contact and heat transfer throughout the heating process. This dynamic adaptation ensures consistent heating despite changes in substrate dimensions and density.
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
Ensures uniform and efficient heating of aerosol substrates, reducing safety risks by maintaining contact and compensating for shrinkage, without additional actuation mechanisms.
Implementation Method 1
a heating chamber arranged to receive an aerosol substrate, the heating chamber operable to heat the aerosol substrate to generate an aerosol
Implementation Method 2
a compressing element configured to change shape above a threshold temperature; such that the compressing element extends into the heating chamber during a heating operation
Data Source
Figure 1A
Figure 1B
Figure 2A~2C
AI summary
An aerosol generating device (100) is described. The aerosol generating device (100) includes a heating chamber (110) arranged to receive an aerosol substrate (121), the heating chamber (110) operable to heat the aerosol substrate (121) to generate an aerosol; a compressing element (130) configured to change shape above a threshold temperature; such that the compressing element (130) extends into the heating chamber (110) during a heating operation of the aerosol generating device (100). In this way, an improved thermal contact with the aerosol substrate (121) is achieved and maintained even where shrinkage of the aerosol substrate (121) occurs during heating.