Heating Chamber Compression Element for Stable Aerosol Substrate Heating

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Solution Overview

Problem

Aerosol substrates in heated substrate aerosol generation devices lose structural integrity during heating, leading to inconsistent aerosol generation and safety concerns when removed, as they can be hot and difficult to handle.

Innovation Solution

A heating chamber with a compression element made of thermally active material that compresses the aerosol substrate against a reaction surface, utilizing magnetic properties for passive displacement to ensure consistent heating and prevent substrate removal while hot, with optional heating elements and resilient elements for enhanced performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the aerosol substrate is heated to generate aerosol, then aerosol generation is achieved, but the substrate loses structural integrity and shrinks

Engineering Contradiction:

Improveaerosol generationVSAvoidsubstrate structural integrity

Core Design Contradiction:

ProductivityVSStability of the object's composition

Solution Approach 1:

The compression element is pre-configured to engage with the aerosol substrate before heating begins. This preliminary compression action maintains substrate structural integrity during the subsequent heating process, preventing shrinkage and maintaining consistent heating characteristics throughout the aerosol generation cycle

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The compression element undergoes temperature-dependent displacement, changing its compression parameter in response to heating chamber temperature. As temperature increases, the compression element displaces to maintain optimal compression force, compensating for thermal expansion and preventing substrate degradation

Inventive Principle:

Principle #35Parameter changes

2Productivity

If the aerosol substrate is compressed during heating, then consistent heating and improved aerosol generation are achieved, but the device complexity increases

Engineering Contradiction:

Improveaerosol generation consistencyVSAvoidheating chamber structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The compression element utilizes the heating chamber's own temperature field to drive its displacement action. The thermally active material in the compression element responds automatically to temperature changes, eliminating the need for external actuators or control systems. The system essentially compresses itself through thermal energy

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces traditional mechanical compression systems (motors, actuators, springs) with a thermally responsive material system. The compression force is generated through temperature-dependent material properties rather than mechanical actuation, significantly simplifying the device structure

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Device complexity

If the compression element uses thermally active magnetic material for passive displacement, then control circuitry is eliminated, but the magnetic field strength requirements increase

Engineering Contradiction:

Improvecontrol circuitryVSAvoidmagnetic field strength

Core Design Contradiction:

Device complexityVSForce

Solution Approach 1:

The compression element employs magnetic material that undergoes a phase transition at a specific Curie temperature. Below this temperature, the material is ferromagnetic and strongly attracted to the magnetic interaction element, providing compression force. Above the Curie temperature, the material becomes paramagnetic and the magnetic force diminishes, automatically releasing compression

Inventive Principle:

Principle #36Phase transitions

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 consistent and uniform heating of the aerosol substrate, improving aerosol generation and safety by maintaining the substrate in a compressed state during heating, reducing the risk of burns and enhancing the device's operational efficiency.

Implementation Method 1

at least one of the first and second magnetic materials has a threshold temperature at which the material undergoes a magnetic phase transition

Methodology Applied

Scientific EffectMagnetic phase transition: Curie Point (ferromagnetic)

Implementation Method 2

the heating chamber is configured to, during aerosol generation, raise the temperature of the heating chamber to an aerosol generation temperature above the threshold temperature

Methodology Applied

Scientific EffectHeating: Heating

Implementation Method 3

the compression element is displaced in response to a change in a magnetic force between the first and second magnetic materials

Methodology Applied

Scientific EffectMagnetic force interaction: Magnetism

Data Source

PatentUS20230371599A1Heating Chamber for Aerosol Generation Device

Publication Date: 2023.11.23 JT INTERNATIONAL SA

AI summary

A heating chamber (11) for an aerosol generation device (1), the heating chamber (11) comprising: a compression element (111) comprising a thermally active material; and a reaction surface (112), wherein the heating chamber (11) is adapted to receive an aerosol substrate (2) between the compression element (111) and the reaction surface (112), and the compression element (111) is configured to compress the aerosol substrate (2) against the reaction surface (112), wherein the compression element (111) is configured to undergo displacement according to a temperature of the heating chamber (11) and a thermal response characteristic of a magnetic property of the thermally active material.