Vaporization Heating Element Bump Groove Design
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Solution Overview
Problem
Conventional heat-not-burn (HNB) products experience slow aerosol generation at the early stage due to the large volume and slow thermal conduction of the aerosol-forming substrate, affecting taste consistency and aerosol concentration.
Innovation Solution
A vaporization main unit with a mounting base and a heating element, where the heating element is arranged in a groove with a bump on the bottom surface, allowing for improved heating efficiency by spacing the heating element from the side surface of the groove.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the heating body is inserted into or wrapped outside the aerosol-forming substrate, then the heating body can directly contact the substrate for heating, but the aerosol generation speed is slow at the early stage due to large substrate volume and slow thermal conduction
Solution Approach 1:
The heating element is divided into two functional parts: a first heating portion that directly contacts the aerosol-forming substrate for rapid heating, and a second heating portion that does not contact the substrate to maintain high temperature for sustained aerosol generation. This segmentation allows different parts of the heating element to perform different functions simultaneously, resolving the contradiction between fast initial heating and sustained aerosol production.
Solution Approach 2:
Different portions of the heating element are designed with different thermal characteristics. The first heating portion has high thermal contact with the substrate for rapid heat transfer, while the second heating portion is thermally isolated to maintain elevated temperatures. This local differentiation of heating characteristics enables both fast aerosol generation and consistent taste quality.
2Use of energy by moving object
If the heating body is in direct contact with the aerosol-forming substrate, then power can be efficiently transferred for heat generation, but the taste consistency is affected and aerosol concentration requirement cannot be met during early inhalation
Solution Approach 1:
The heating element is segmented into a first heating portion for efficient power transfer to the substrate and a second heating portion that remains thermally isolated. This segmentation allows the system to achieve both high power transfer efficiency for rapid aerosol generation and temperature stability for consistent taste quality throughout the heating process.
Solution Approach 2:
The first heating portion acts as an intermediary that efficiently transfers power to the aerosol-forming substrate, while the second heating portion serves as a thermal reservoir that maintains overall temperature stability. This intermediary arrangement resolves the conflict between efficient energy transfer and consistent thermal performance.
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 improved heating efficiency of the vaporization main unit enhances the speed of aerosol generation at the early stage, ensuring consistent taste and meeting the requirement for aerosol concentration during inhalation.
Implementation Method 1
a generation speed of the aerosols is slow at an early stage when the heating body bakes the aerosol-forming substrate
Data Source
AI summary
A vaporization main unit includes: a mounting base comprising a mounting portion for mounting an aerosol-forming article; and a heating element for heating the aerosol-forming article, the heating element being arranged in the mounting portion. The mounting portion forms a groove. A bump is provided on a bottom surface of the groove, the heating element being arranged on the bump, the bump being in contact with the heating element. The heating element and a side surface of the groove are at least partially spaced.