CN-121972358-A - Atomization rate adjusting method and atomization device

CN121972358ACN 121972358 ACN121972358 ACN 121972358ACN-121972358-A

Abstract

The application discloses an atomization rate adjusting method and an atomization device, wherein the atomization rate adjusting method comprises the steps of presetting an atomization rate; the method comprises the steps of determining waveform amplitude parameters of a driving signal and waveform output time duty ratio parameters of the driving signal based on preset atomization rate, determining liquid flow rate parameters matched with the waveform amplitude parameters and the waveform output time duty ratio parameters of the driving signal, and driving liquid supply and driving an atomization sheet to work based on the waveform amplitude parameters, the waveform output time duty ratio parameters and the liquid flow rate parameters of the driving signal. The application also provides an atomization device, wherein the atomization sheet is provided with a hole, the driving circuit is electrically connected with the atomization sheet and used for implementing an atomization rate adjusting method, a liquid cavity is arranged between the mounting seat and the atomization sheet, the cylinder is connected with the mounting seat, an atomization cavity is formed in the cylinder, and the atomization sheet is used for atomizing liquid in the liquid cavity.

Inventors

BAO YU
FAN WENYU
MA YINGMING
LIU ZHENBANG
WANG WEI
NIU LI
Ling Xionghui

Assignees

广州大学

Dates

Publication Date: 20260505
Application Date: 20251210

Claims (10)

1. A method of adjusting an atomization rate, comprising: presetting an atomization rate; Determining waveform amplitude parameters of the driving signals according to a preset mapping relation based on the preset atomization rate; based on the preset atomization rate, presetting a waveform output time duty ratio parameter of a driving signal; Determining a liquid flow rate parameter matched with a waveform amplitude parameter and a waveform output time duty ratio parameter of the driving signal; after the waveform amplitude parameter, waveform output time duty ratio parameter and liquid flow rate parameter of the driving signal are determined, driving liquid supply and driving the atomizing sheet to work.
2. The method of claim 1, wherein determining a liquid flow rate parameter that matches a waveform amplitude parameter and a waveform output time duty cycle parameter of the drive signal comprises: The waveform output time duty ratio parameter of the preset driving signal is 100%, the waveform of the driving signal is determined based on the waveform output time duty ratio parameter, and whether the preset atomization rate can be met is judged; If the preset atomization rate is met, outputting a waveform of a driving signal, and determining a liquid flow rate parameter matched with the waveform amplitude parameter of the driving signal; And if the preset atomization rate is not met, adjusting the waveform output time duty ratio parameter of the driving signal until the waveform of the output driving signal meets the preset atomization rate, and determining the liquid flow rate parameter matched with the waveform amplitude parameter and the waveform output time duty ratio parameter of the driving signal.
3. The method according to claim 1 or 2, wherein a modulation period is set for the waveform of the drive signal when the waveform output time of the drive signal is less than 100%, the drive signal is operated in the modulation period, and the waveform amplitude is switched from the non-zero waveform to the zero waveform amplitude at a high frequency in each of the modulation periods.
4. The method of claim 1, wherein the waveform is generated by a digital-to-analog converter and outputted after the waveform amplitude parameter and the waveform output time duty cycle parameter of the driving signal are determined.
5. The method of claim 4, wherein the digital-to-analog converter generates a waveform and the waveform is amplified by the power amplifier circuit.
6. The method of claim 5, wherein the corresponding liquid flow rate parameter is matched based on a waveform of the driving signal output through the power amplification circuit.
7. An atomizing device, comprising: A mounting base; The atomizing sheet is arranged on the mounting seat, the atomizing sheet is provided with a hole, and a liquid cavity is arranged between the atomizing sheet and the mounting seat; A drive circuit electrically connected to the atomizing sheet, the drive circuit for implementing the atomization rate adjustment method according to any one of claims 1 to 6; The cylinder, the cylinder connect in the mount pad, the inside atomizing chamber that forms of cylinder, the one end in atomizing chamber is provided with the opening, the atomizing piece set up in the atomizing chamber has the open-ended one end, the atomizing piece be used for with liquid preparation in the liquid chamber becomes atomizing gas, the hole is used for supplying atomizing gas accesss to the atomizing chamber.
8. The atomizing device according to claim 7, wherein the liquid chamber is configured to hold a liquid to be atomized, the liquid chamber is configured such that the liquid to be atomized is supplied upward, and a liquid level of the liquid to be atomized can rise in a vertical direction and be in direct contact with at least a portion of the atomizing sheet when the liquid is supplied.
9. The atomizing device according to claim 7, wherein the mounting base is provided with at least one air inlet channel and a plurality of air outlet channels, the plurality of air outlet channels are uniformly arranged along the peripheral side of the atomizing sheet, and the outlets of the air outlet channels are oriented parallel to the center line of the cylinder.
10. The atomizing device according to claim 7, wherein a cover body is arranged at one end of the cylinder body away from the mounting seat, a groove is arranged at one end of the cover body close to the atomizing cavity, the cover body is provided with a through hole, the through hole penetrates through the cover body and the groove, the cross section area of the groove is gradually reduced along the direction away from the atomizing sheet, and the through hole is used for outputting the atomizing gas in the atomizing cavity to the outside of the cylinder body.

Description

Atomization rate adjusting method and atomization device Technical Field The application relates to the technical field of atomization devices, in particular to an atomization rate adjusting method and an atomization device. Background For analytical instruments and equipment or research requiring continuous and stable atomization sampling, such as Atomic Absorption Spectroscopy (AAS), inductively coupled plasma emission spectroscopy (ICP-OES), inductively coupled plasma mass spectrometry (ICP-MS), atomic Fluorescence Spectroscopy (AFS), ion Mobility Spectrometry (IMS) and the like, other occasions for laboratory research, such as low-temperature normal-pressure plasma jet research and the like, the constant atomization sampling rate is required to be maintained during the working or research, and the adjustable range of the atomization rate of liquid samples is also required to be higher for laboratory verification research. The traditional ultrasonic atomization sampling device has the problems that 1, liquid absorbing materials are filled below a microporous ultrasonic atomization sheet, the liquid absorbing materials are required to be cleaned for a long time or replaced synchronously when a sample is replaced, meanwhile, the change of the liquid level height, the viscosity and the hydrophobicity of the sample also can cause the change of the atomization rate, the sampling application of an analysis instrument which needs to accurately control the sampling amount is limited, 2, the structure of the ultrasonic atomization sampling device adopting an indirect atomization mode is complex, the cost is high, the ultrasonic energy is lost in the transmission process and is difficult to achieve the optimal efficiency due to the existence of a separation device and a coupling medium, 3, the peristaltic pump or a syringe pump is used for driving the sample liquid, the flow rate of the sample can be controlled within a certain range, when the liquid supply rate is higher than the atomization rate, the excessive liquid can not flow along the edge of the atomization sheet or the inner wall of the device, the sample is wasted, and when the liquid supply rate is lower than the atomization rate, the dry combustion of the atomization sheet can be caused, and 4, a method for adjusting the working duty ratio of the atomization sheet also exists, the method actually enables the sheet to work in an intermittent mode, and therefore, the atomization sheet is not uniform in the time, the concentration and the continuous sampling rate can not change in the continuous occasion due to the concentration. On the other hand, aerosol generated after the atomization of a liquid sample still can be influenced by the stability of a gas flow path and a gas flow in the process of sampling along with carrier gas, and the existing ultrasonic atomization sampling device adopts a simple air inlet-air outlet mode, so that the condition of dead volume and gas vortex in an atomization cavity can be caused, and the efficiency and the stability of atomization sampling are influenced, and therefore the size, the shape and the design of the gas flow path of the atomization cavity in the ultrasonic atomization sampling device are also very important. Disclosure of Invention In order to solve at least one of the above technical problems, the present application provides an atomization rate adjusting method and an atomization device, and the adopted technical scheme is as follows. The atomization rate adjusting method provided by the application comprises the following steps: presetting an atomization rate; Determining waveform amplitude parameters of the driving signals according to a preset mapping relation based on the preset atomization rate; based on the preset atomization rate, presetting a waveform output time duty ratio parameter of a driving signal; Determining a liquid flow rate parameter matched with a waveform amplitude parameter and a waveform output time duty ratio parameter of the driving signal; after the waveform amplitude parameter, waveform output time duty ratio parameter and liquid flow rate parameter of the driving signal are determined, driving liquid supply and driving the atomizing sheet to work. In some embodiments of the application, the determining the liquid flow rate parameter matching the waveform amplitude parameter and the waveform output time duty cycle parameter of the drive signal comprises: The waveform output time duty ratio parameter of the preset driving signal is 100%, the waveform of the driving signal is determined based on the waveform output time duty ratio parameter, and whether the preset atomization rate can be met is judged; If the preset atomization rate is met, outputting a waveform of a driving signal, and determining a liquid flow rate parameter matched with the waveform amplitude parameter of the driving signal; And if the preset atomization rate is not met, adjusting the waveform output time duty