Microwave Heating Assembly with Paired Radiation Structures

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Solution Overview

Problem

Microwave heating type aerosol generating devices suffer from low energy utilization efficiency and slow aerosol generation due to uneven microwave energy distribution, resulting in reduced aerosol production and slow heating speeds.

Innovation Solution

The microwave heating assembly incorporates an outer conductor unit with first radiation structures and an inner conductor unit with corresponding second radiation structures, arranged to concentrate microwave energy distribution and enhance heating efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If microwave energy is allowed to heat the aerosol-generating article according to inherent distribution, then the device structure remains simple, but energy utilization efficiency is low and aerosol generation speed is slow

Engineering Contradiction:
Improveaerosol generation speedVSAvoidmicrowave heating assembly structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent applies local quality by introducing radiation structures at specific locations on the inner and outer conductors to create localized high-energy regions. These structures are positioned to generate concentrated microwave energy fields at the aerosol-generating article, rather than using uniform heating throughout the cavity. This localized energy concentration improves aerosol generation speed without requiring a complete redesign of the entire microwave system.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The radiation structures on the inner and outer conductors act as intermediaries that modify the microwave energy distribution. Instead of directly controlling the complex electromagnetic field patterns, the patent uses these physical structures as mediators to reshape the energy distribution, creating favorable heating conditions for the aerosol-generating article while maintaining relatively simple device architecture.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Power

If microwave energy distribution is left to inherent patterns, then the heating assembly is simple to manufacture, but energy is excessively dispersed and heating speed is slow

Engineering Contradiction:
Improveheating power concentrationVSAvoidmicrowave heating assembly fabrication
Core Design Contradiction:
PowerVSEase of manufacture

Solution Approach 1:

The radiation structures are implemented as localized modifications on the conductor surfaces, such as protrusions, grooves, or patterned regions. These local structural changes concentrate microwave energy at specific positions where the aerosol-generating article is located, improving power concentration without requiring complete redesign of the entire heating assembly and maintaining ease of manufacture.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The microwave heating assembly is segmented into functional regions through the radiation structures on inner and outer conductors. These structures divide the heating function into specific zones of high energy concentration, allowing the rest of the cavity to maintain simple, easy-to-manufacture geometry while achieving effective heating through the segmented energy distribution.

Inventive Principle:
Principle #1Segmentation

3Use of energy by stationary object

If conventional microwave heating is used without radiation structures, then the device is simple in structure, but energy utilization efficiency is not high

Engineering Contradiction:
Improvemicrowave energy utilization efficiencyVSAvoidconductor structure complexity
Core Design Contradiction:
Use of energy by stationary objectVSDevice complexity

Solution Approach 1:

The radiation structures serve as intermediary elements that improve microwave energy coupling to the aerosol-generating article. By introducing these structured features on the conductors, the system achieves better energy transfer efficiency without fundamentally changing the microwave generation or delivery mechanism, thus improving energy utilization with minimal increase in device complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the physical parameters of the conductor surfaces by adding radiation structures with specific geometries, positions, and dimensions. These parameter modifications alter the microwave field distribution and improve energy coupling to the article, achieving higher energy utilization efficiency while keeping the overall device structure relatively simple and manageable.

Inventive Principle:
Principle #35Parameter changes

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 concentrated energy distribution effectively heats the aerosol-generating article, improving heating speed and aerosol generation efficiency.

Implementation Method 1

A microwave heating type aerosol generating device in the related art can heat an aerosol-generating article through microwaves

Methodology Applied
Scientific EffectMicrowave heating: Dielectric Heating

Implementation Method 2

The microwave heating assembly includes an outer conductor unit and an inner conductor unit, each having a radiation structure, and the radiation structures are used to concentrate a distribution field of microwave energy

Methodology Applied
Scientific EffectMicrowave radiation: Microwave Radiation

Data Source

PatentUS20250331564A1Aerosol generating device and microwave heating assembly therefor
Publication Date: 2025.10.30 SMOORE INTERNATIONAL HOLDINGS LIMITED
  • US20250331564A1 patent drawing
  • US20250331564A1 patent drawing
  • US20250331564A1 patent drawing

AI summary

A microwave heating assembly for an aerosol generating device including: an outer conductor unit having: an outer conductor cylinder in a cylindrical shape and comprising an opened end and a closed end opposite the opened end, and at least one first radiation structure arranged on an inner peripheral wall surface of the outer conductor cylinder; and an inner conductor unit arranged in the outer conductor cylinder, one end of the inner conductor unit being connected to an end wall of the closed end, and an other end of the inner conductor unit extending towards the opened end, the inner conductor unit including: at least one second radiation structure corresponding to the at least one first radiation structure.