Internal-Heater Aerosol Device With Porous Interface Delivery

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Solution Overview

Problem

Existing aerosol generating devices face challenges in efficiently generating aerosol with improved efficiency, reduced device length, protection of vaporizer components, and minimizing waste and leakage.

Innovation Solution

The device incorporates a vaporizer partially inside the internal passageway of a storage portion, with a porous interface lining the passageway to convey the aerosol-forming substrate, enhancing manufacturing ease, reducing device length, protecting the vaporizer, and minimizing waste and leakage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of stationary object

If the vaporizer is placed partially inside the internal passageway of the storage portion, then the device length is reduced and assembly is simplified, but the vaporizer may be more exposed to damage and overheating

Engineering Contradiction:

Improvedevice lengthVSAvoidvaporizer protection

Core Design Contradiction:

Length of stationary objectVSReliability

Solution Approach 1:

The vaporizer is nested partially inside the internal passageway of the storage portion, with the porous interface lining the passageway. This nesting arrangement reduces the overall device length while the porous interface acts as a protective barrier between the vaporizer and direct contact with the aerosol-forming substrate, preventing overheating and damage.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The porous interface serves as an intermediary element between the storage portion and the vaporizer. It conveys the aerosol-forming substrate towards the vaporizer while protecting the vaporizer from direct exposure to the substrate, thereby preventing overheating and damage while maintaining the compact design.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Loss of substance

If a porous interface lines the internal passageway to convey the aerosol-forming substrate, then waste and leakage are minimized, but the device complexity increases

Engineering Contradiction:

Improveaerosol substrate waste and leakageVSAvoiddevice complexity

Core Design Contradiction:

Loss of substanceVSDevice complexity

Solution Approach 1:

A porous interface is used to line the internal passageway of the storage portion. The porous structure enables capillary action to convey the aerosol-forming substrate towards the vaporizer efficiently, minimizing waste and leakage. While this adds some structural complexity, the porous interface is a single integrated component that simplifies the overall system compared to multiple separate delivery mechanisms.

Inventive Principle:

Principle #31Porous materials

3Ease of manufacture

If the vaporizer is positioned inside the internal passageway, then manufacturing ease is improved, but the vaporizer may experience increased thermal exposure

Engineering Contradiction:

Improvemanufacturing easeVSAvoidvaporizer thermal exposure

Core Design Contradiction:

Ease of manufactureVSTemperature

Solution Approach 1:

The vaporizer is nested inside the internal passageway of the storage portion, which simplifies manufacturing by reducing the number of separate assembly steps. The porous interface lining the passageway acts as a thermal barrier, protecting the vaporizer from excessive thermal exposure while maintaining this compact, easy-to-manufacture configuration.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The porous interface serves as a thermal intermediary, blocking direct thermal contact between the aerosol-forming substrate and the vaporizer. This allows the vaporizer to be positioned inside the passageway for manufacturing ease while the porous interface mediates the thermal interaction, preventing overheating.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 design facilitates easier assembly, reduces device length, protects the vaporizer from damage, minimizes overheating, and reduces waste by reusing condensed aerosol, while maintaining hygiene and efficient aerosol generation.

Implementation Method 1

a porous interface at least partially lining the internal passageway for conveying the aerosol-forming substrate from the storage portion towards the vaporizer

Methodology Applied

Scientific EffectCapillary action: Capillary Action

Implementation Method 2

a vaporizer for heating the aerosol-forming substrate to form an aerosol

Methodology Applied

Scientific EffectEvaporation: Evaporation

Data Source

PatentUS20250242119A1Aerosol generating device having an internal heater

Publication Date: 2025.07.31 PHILIP MORRIS PRODUCTS SA

AI summary

An aerosol generating device is provided, including: a storage portion configured to store an aerosol-forming substrate, the storage portion having an outer housing and an internal passageway, the storage portion forming a reservoir for the aerosol-forming substrate between the outer housing and the internal passageway; a vaporizer configured to heat the aerosol-forming substrate to form an aerosol, the vaporizer being disposed at least partially inside the internal passageway in the storage portion; and a porous interface at least partially lining the internal passageway and being configured to convey the aerosol-forming substrate from the storage portion towards the vaporizer.