Multi-Heater Aerosol Layout for Compact Liquid Transfer

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Solution Overview

Problem

Existing handheld aerosol-generating systems with multiple heating elements face challenges in efficiently packaging these elements due to their size, which affects the device's compactness and liquid and air flow management.

Innovation Solution

The system employs a configuration with first and second heating elements spaced apart along the longitudinal axis, each connected by first and second liquid transfer elements, allowing for a more efficient packaging arrangement that reduces the device's width and enhances aerosol generation efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple heating elements are included in the aerosol-generating system, then aerosol production capacity is improved, but device size increases

Engineering Contradiction:

Improveaerosol production capacityVSAvoiddevice size

Core Design Contradiction:

ProductivityVSVolume of moving object

Solution Approach 1:

The patent transitions from a conventional side-by-side arrangement of heating elements to a stacked configuration along the longitudinal axis of the device. This vertical stacking utilizes the length dimension more effectively, reducing the width and overall footprint of the device while maintaining multiple heating elements for adequate aerosol production capacity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The liquid transfer elements are positioned to pass through or alongside the heating elements in a nested arrangement. The first liquid transfer element passes through the first heating element, and the second liquid transfer element passes through the second heating element, allowing compact integration of multiple components in a space-efficient manner.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Device complexity

If heating elements are spaced apart along the longitudinal axis, then packing efficiency is improved, but liquid transfer path length increases

Engineering Contradiction:

Improvepacking efficiencyVSAvoidliquid transfer path length

Core Design Contradiction:

Device complexityVSLength of moving object

Solution Approach 1:

The liquid transfer elements are configured with curved or bent paths rather than straight lines, allowing them to navigate the spaced-apart heating elements more efficiently. This curved routing optimizes the liquid transfer path to minimize length while accommodating the longitudinal spacing of heating elements for better packing efficiency.

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Productivity

If multiple heating elements are used, then aerosol generation efficiency is improved, but device width increases

Engineering Contradiction:

Improveaerosol generation efficiencyVSAvoiddevice width

Core Design Contradiction:

ProductivityVSArea of moving object

Solution Approach 1:

The patent repositions the heating elements from a lateral arrangement (increasing width) to a longitudinal arrangement (utilizing length). By stacking the first and second heating elements along the longitudinal axis rather than placing them side-by-side, the device maintains multiple heating elements for efficient aerosol generation while significantly reducing the width dimension.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 configuration enables a smaller, more compact aerosol-generating system with improved aerosol production and airflow, facilitating efficient transfer of aerosol-forming substrate to the heating elements.

Implementation Method 1

electrically operated vaporizer

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Implementation Method 2

generate an aerosol

Methodology Applied

Scientific EffectEvaporation: Evaporation

Implementation Method 3

liquid transfer element having first and second end portions and a portion between the first and second end portions at the first heating element

Methodology Applied

Scientific EffectCapillary action: Capillary Action

Data Source

PatentUS20250366521A1Aerosol-generating system with multiple heating elements

Publication Date: 2025.12.04 ALTRIA CLIENT SERVICES LLC

AI summary

An aerosol-generating system includes a reservoir containing an aerosol-forming substrate. The system also includes first and second heating elements and first and second liquid transfer elements. The first and second heating elements are spaced apart from the reservoir. The first and second liquid transfer elements are configured to deliver aerosol-forming substrate from the reservoir to the heating elements. The first liquid transfer element has first and second end portions and a portion between the first and second end portions at the first heating element. The second liquid transfer element has first and second end portions and a portion between the first and second end portions at the second heating element. The portion of the first liquid transfer element at the first heating element may extend in a first direction. The portion of the second liquid transfer element at the second heating element may extend in a second direction.