Dual Air-Chamber Piezoelectric Nebulization Module
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Solution Overview
Problem
Conventional nebulization modules suffer from vibration energy absorption, limited vibration area, and chemical corrosion due to direct contact between piezoelectric actuators and liquids, leading to reduced performance and shortened service life.
Innovation Solution
A dual air-chamber fully sealed piezoelectric nebulization module with first and second positioning bumps in separate casings, using flat dispensing technology for sealant application to create independent air chambers, reducing contact area and preventing vibration absorption while isolating liquids from corrosive materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing element is attached completely to the vibratory element to isolate liquid, then corrosion protection is improved, but vibration energy is absorbed and nebulization performance is reduced
Solution Approach 1:
The sealing element is divided into a first sealing portion and a second sealing portion that are positioned at different locations. The first sealing portion isolates the liquid from the vibratory element, while the second sealing portion isolates the liquid from the sealing element itself, creating a vibration transmission path that avoids energy absorption by the sealing material.
2Productivity
If the piezoelectric actuator is directly contacted with liquid for nebulization, then nebulization function is achieved, but heavy metals are released and liquid is contaminated
Solution Approach 1:
An aerosolizing element is introduced as an intermediary component between the piezoelectric actuator and the liquid. The piezoelectric actuator vibrates the aerosolizing element, which in turn atomizes the liquid, allowing the piezoelectric actuator to remain isolated from direct liquid contact while still achieving nebulization function.
3Ease of manufacture
If soldering or curing structure adhesives are used to connect components, then structural assembly is achieved, but chemical reactions corrode the module when liquid is atomized
Solution Approach 1:
The harmful soldering or curing adhesive connections are removed from the liquid-exposed pathways. The design extracts these vulnerable joint surfaces from contact with atomized liquid, eliminating the source of chemical corrosion while maintaining structural integrity through alternative connection methods in protected locations.
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
Enhances nebulization efficiency by maintaining vibration energy and preventing corrosion, ensuring a longer service life and reducing contamination risks.
Implementation Method 1
a piezoelectric actuator (or a vibratory element) made of a piezoelectric actuating material
Data Source
AI summary
Disclosed is a dual air-chamber fully sealed piezoelectric nebulization module including a first casing, a second casing and a piezoelectric nebulization module, and the piezoelectric nebulization module is clamped between the casings by snapping and sealing to partition the internal space in the first casing and the second casing into two independent air chambers. In this design, a peripheral portion of the piezoelectric nebulization module is packaged to reduce the energy and vibration from being absorbed or inhibited during vibration and provides a space with good support and free vibration to enhance the nebulization efficiency. In addition, the design with the two independent air chambers can achieve the double-barrier sealing and isolating effect and reduce the chance of the piezoelectric nebulization module being corroded or damaged.