Ultrasonic Atomizer Liquid Level Detection
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Solution Overview
Problem
Conventional ultrasonic atomizing devices require additional manufacturing costs due to a two-line gas system for transport and dilution gases, and face challenges in accurately measuring the liquid surface level of the raw material solution due to ultrasonic wave interference.
Innovation Solution
The ultrasonic atomizing device adopts a single-line gas system using only the transport gas and incorporates a liquid surface detection unit in a raw material solution separation pipe to stabilize the liquid surface and accurately detect the liquid level, allowing control of mist amount without changing the transport gas flow rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a two-line gas system (transport gas and dilution gas) is used to control mist amount, then the mist supply can be controlled, but the device complexity and manufacturing cost increase
Solution Approach 1:
The invention extracts and removes the dilution gas line from the conventional two-line gas system, retaining only the transport gas line. This simplification eliminates the need for separate dilution gas flow control while maintaining mist amount control capability through transport gas flow rate adjustment and liquid level control
Solution Approach 2:
The transport gas line is made to perform multiple functions: it both transports the generated mist and controls the mist amount by adjusting its flow rate. Additionally, the liquid level in the atomization container serves as a control parameter for mist quantity, making the system more versatile with fewer components
2Manufacturing precision
If ultrasonic waves are applied to atomize the raw material solution, then fine mist is generated, but the liquid surface level becomes unstable and difficult to detect
Solution Approach 1:
The invention introduces a liquid level detection unit that acts as an intermediary between the ultrasonic atomization process and the control system. This detector monitors the liquid surface level in the atomization container and provides feedback signals to the control unit, enabling precise control of the raw material solution supply to maintain stable atomization
Solution Approach 2:
The system implements a feedback control mechanism where the liquid level detection unit continuously monitors the liquid surface level and sends signals to the control unit. The control unit adjusts the raw material solution supply based on this feedback, maintaining stable liquid levels despite ultrasonic wave interference
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 configuration reduces manufacturing costs by eliminating the need for a dilution gas control system and enables precise detection and control of the liquid level, ensuring a stable mist supply for thin film formation.
Implementation Method 1
an ultrasonic atomizing device atomizes a solution (to a mist) using ultrasonic waves oscillated by an ultrasonic transducer
Implementation Method 2
the atomized raw material solution mist is sent by a transport gas outside
Data Source
AI summary
In an ultrasonic atomizing device of the present disclosure, a raw material solution separation pipe is provided on a side surface of an atomization container. The raw material solution separation pipe has a raw material solution storage space for storing the raw material solution, and a raw material solution passage port for supplying and discharging the raw material solution to and from the raw material solution container. A liquid surface detection unit is provided in the vicinity of the raw material solution separation pipe. The liquid surface detection unit detects the level of the liquid level of the raw material solution in the raw material solution storage space, and outputs a liquid surface detection signal indicating the level of the detected liquid level.