Cylindrical Heating Body with Thermal Baffle for Tobacco Aerosol

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Solution Overview

Problem

Existing aerosol generating devices, such as electronic cigarettes, often fail to produce aerosol that tastes as good as traditional cigarettes due to inefficient heating methods.

Innovation Solution

An aerosol generating device with a shell, mouthpiece assembly, atomizing assembly, circuit board assembly, and connecting assembly, featuring a cylindrical heating body with both inner and outer surfaces that heat a tobacco block, and a thermal baffle to enhance air flow and flavor mixing, powered by a detachable battery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a heating component is used to heat tobacco liquid in an atomizer, then aerosol is generated, but the taste quality of the aerosol is poor compared to ordinary cigarettes

Engineering Contradiction:
Improvetaste qualityVSAvoidheating efficiency
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent changes the heating parameters by using a heating body that directly contacts the tobacco block, heating it to a temperature range of 200-400°C. This temperature control parameter change enables efficient aerosol generation while preserving the tobacco's original taste, resolving the contradiction between taste quality and heating efficiency.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent replaces the conventional atomizer's liquid heating mechanism with a solid tobacco block heating system. The heating body directly contacts and heats the tobacco block, substituting the mechanical atomization process with a simpler thermal heating process that better preserves taste while improving heating efficiency.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If a heating body with both inner and outer surfaces is used to heat a tobacco block, then heating efficiency and taste are improved, but device complexity increases

Engineering Contradiction:
Improveheating efficiencyVSAvoidheating structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The heating body is segmented into distinct inner and outer surfaces, with the inner surface contacting the tobacco block and the outer surface exposed to air flow. This segmentation allows independent optimization of each surface's function, improving heating efficiency while keeping the overall structure manageable.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The heating body merges the heating function with the structural support function. The same component that provides structural support for the tobacco block also serves as the heating element, eliminating the need for separate heating components and reducing overall device complexity despite the dual-surface heating capability.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If air flow is enhanced through the use of a thermal baffle, then flavor mixing is improved, but device complexity increases

Engineering Contradiction:
Improveflavor qualityVSAvoidair flow control structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The thermal baffle acts as an intermediary component between the heating body and the air flow path. It mediates the interaction by directing air flow across the heating surface, enabling effective flavor mixing without requiring complex active flow control mechanisms. The baffle passively shapes the air flow to achieve the desired mixing effect.

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

The device efficiently heats tobacco blocks to produce high-quality aerosol with improved taste and heat efficiency, ensuring a better user experience by ensuring even heating and mixing of tobacco and fragrance smells.

Implementation Method 1

a heating body (244)... The inner surface and the outer surface of the heating wall (2442) are in surface contact with the tobacco block (4), so as to heat the tobacco block (4) more evenly

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

a thermal baffle to enhance air flow and flavor mixing

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentEP2904915B1Aerosol generating device and aerosol inhalation device having the same
Publication Date: 2018.05.16 SHENZHEN FIRST UNION TECH CO LTD
  • EP2904915B1 patent drawingFigure 1
  • EP2904915B1 patent drawingFigure 2
  • EP2904915B1 patent drawingFigure 3

AI summary

The present disclosure relates to an exemplary aerosol generating device for heating a tobacco block. The aerosol generating device includes a shell, a mouthpiece assembly at an end of the shell, and an atomizing assembly received in the shell. The atomizing assembly includes a hollow heating body configured for inserting into the tobacco block. The heating body includes an inner surface and an outer surface for heating the tobacco block.