Mesh Nebulizer Support Frame Inclination Accuracy
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Solution Overview
Problem
Conventional mesh nebulizers face challenges in maintaining accurate inclination of the mesh portion with respect to the vibration surface due to deflection issues with synthetic resin sheets, requiring multiple members to achieve optimal gap alignment for efficient liquid atomization.
Innovation Solution
A mesh nebulizer design featuring a support frame with a flat annular bottom plate and inward protrusions that maintain the mesh portion at an inclination angle, ensuring accurate positioning without increasing the number of elements, and a ring to keep the mesh portion flat, allowing for stable liquid atomization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mesh portion is supported by a reinforcing part with outer diameter larger than the vibration surface diameter, then the mesh portion can be supported, but the sheet deflects and inclination accuracy becomes insufficient
Solution Approach 1:
The support frame is divided into multiple functional parts: a bottom plate for overall support, and multiple protrusions for precise positioning. This segmentation allows the bottom plate to provide stable support while the protrusions maintain accurate inclination by contacting specific portions of the vibration surface, preventing sheet deflection.
Solution Approach 2:
Different regions of the support frame have different functions: the bottom plate provides general support with larger diameter, while the protrusions provide localized precision positioning. The protrusions contact specific local areas of the vibration surface to maintain inclination accuracy without requiring the entire support structure to be precisely positioned.
2Manufacturing precision
If multiple members are used to incline the vibration surface with respect to the mesh portion entrance surface, then inclination accuracy can be maintained, but device complexity increases
Solution Approach 1:
The support frame integrates multiple functions into a single component: it combines the bottom plate for support with multiple protrusions for positioning and inclination maintenance. This merging eliminates the need for separate inclination-adjustment members while maintaining precise inclination through the protrusions contacting the vibration surface.
Solution Approach 2:
The support frame serves multiple purposes simultaneously: it supports the mesh portion, maintains inclination accuracy, and positions the sheet relative to the vibration surface. The protrusions perform both support and positioning functions, reducing the total number of components needed.
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 design improves the inclination accuracy of the mesh portion, enabling stable and efficient liquid atomization without additional components, reducing manufacturing complexity and costs.
Implementation Method 1
a vibration portion (40) having a vibration surface (43) facing upward... a drive voltage is applied to the horn vibrator to vibrate the vibration surface. As a result, the medical liquid is atomized and ejected through the mesh portion
Data Source
AI summary
A mesh nebulizer that atomizes and ejects liquid through a mesh portion includes a vibration portion including a vibration surface facing upward, a liquid supply portion that supplies liquid toward the vibration surface of the vibration portion, a sheet including the mesh portion, and a support frame that supports a peripheral edge of the sheet. The support frame includes a bottom plate that supports a lower surface of the peripheral edge of the sheet, the bottom plate having a flat annular shape, and a larger inner diameter than a diameter of the vibration surface, and a protrusion radially protruding inward from the bottom plate. The sheet including the mesh portion faces the vibration surface at an inclination angle and is in contact with a first portion of a peripheral edge of the vibration surface.