Abrasive Element for Electronic Inhalation Device
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Solution Overview
Problem
Electronic vaping devices face challenges in efficiently generating a consistent particle cloud from a formulation without combustion, as existing methods often rely on heating elements that can be inefficient and prone to issues like leakage and settling.
Innovation Solution
An electronic inhalation device with an abrasive element, such as a stainless steel component with a roughened surface or drill bit, is driven to abrade the formulation, generating particles that are entrained in an air stream to form a particle cloud, while also locally heating the formulation through friction to vaporize components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If heating elements are used to vaporize liquid formulation, then vapor generation is achieved, but efficiency is poor and leakage/settling issues occur
Solution Approach 1:
The patent changes the physical state of the formulation from liquid to solid form, and the heating method from resistance heating to frictional heating. This parameter change eliminates leakage and settling issues inherent to liquid formulations while maintaining efficient vapor generation through the abrasive element's frictional contact
Solution Approach 2:
The patent replaces the traditional thermal resistance heating system with a mechanical friction-based heating system. The abrasive element mechanically abrades the solid formulation, generating heat through friction that directly vaporizes the material, thereby eliminating the inefficient thermal transfer pathway of conventional heating elements
2Reliability
If solid formulation is used instead of liquid, then leakage and settling are avoided, but particle cloud generation efficiency must be maintained
Solution Approach 1:
The abrasive element is driven to rotate or oscillate, creating mechanical vibration and motion that enhances the abrasion process. This mechanical action efficiently breaks down the solid formulation into fine particles while generating sufficient frictional heat for vaporization, maintaining high particle cloud generation efficiency
Solution Approach 2:
The abrasive element serves as an intermediary between the solid formulation and the air stream. It mechanically processes the solid material into particles while simultaneously generating heat, facilitating efficient particle cloud formation without direct contact between the formulation and heating element
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 method produces a consistent particle cloud with particles of desired size (1-10 microns) without the need for resistance heaters, offering stability and ease of manufacture, and avoids issues like leakage and settling associated with liquid formulations.
Implementation Method 1
an abrasive element contacting a surface of the formulation. The abrasive element is configured to abrasively remove particles from the formulation when driven by a driver
Implementation Method 2
The abrasive element may be configured to heat a portion of the formulation by friction, such that a portion of the formulation is vaporized
Implementation Method 3
The abrasive element may be configured to heat a portion of the formulation by friction, such that a portion of the formulation is vaporized
Implementation Method 4
such that the particles become entrained in an air stream of the airflow path and form a particle cloud
Data Source
AI summary
An electronic inhalation device includes an outer housing extending in a longitudinal direction, an air inlet, an outlet, a formulation, and an abrasive element, which contacts a surface of the formulation. The abrasive element is configured to generate a particle cloud from the formulation by removing particles from the formulation and entraining the particles in an air flow.