CN-121971673-A - Plasma atomizer for disinfecting slender forked pipeline structure

CN121971673ACN 121971673 ACN121971673 ACN 121971673ACN-121971673-A

Abstract

The invention discloses a plasma atomizer for disinfecting an elongated bifurcation pipeline structure, which comprises a power supply module, a control module, an air pump, a plasma generation module, a flowmeter, a handheld activation atomization integrated module, an exhaust gas treatment module and a pipeline interface atomization guide sleeve. The device comprises an air pump, a plasma generation module, a handheld activation and atomization integrated module and an exhaust gas treatment module, wherein the air pump, the plasma generation module, the handheld activation and atomization integrated module and the exhaust gas treatment module are sequentially connected through air paths, the air pump is used for driving air flow, the plasma generation module is used for generating active particles, the handheld activation and atomization integrated module is used for activating water or a prefabricated solution and spraying mist particles with the active particles, and the exhaust gas treatment module is used for collecting and harmlessly treating plasma activation gas in a solution activation cavity. The invention uses the specific prefabricated water solution to generate the plasma activated mist, and can obtain better atomization effect.

Inventors

LIU DINGXIN
WANG ZIFENG
ZHANG JISHEN
MA JINGYI
ZHANG TIAN
HE FENG
BAI JIANYUN
ZHENG JIANBAO
Zou Yuanwu
LIU LI
MA TAO

Assignees

西安交通大学
榆林市第三医院(榆林市传染病医院)
西安交通大学医学院第一附属医院
陕西省结核病防治院(陕西省第五人民医院)

Dates

Publication Date: 20260505
Application Date: 20260202

Claims (8)

1. The plasma atomizer for disinfecting the slender bifurcation pipeline structure is characterized by comprising a power supply module, a control module, an air pump, a plasma generation module, a flowmeter, a handheld activation atomization integrated module, an exhaust gas treatment module and a pipeline interface atomization guide sleeve; The handheld activation atomization integrated module comprises a solution activation chamber and a micro-grid atomization zone, wherein the solution activation chamber comprises a detachable chamber upper cover with an air inlet pipe and an air outlet and an activation chamber main body, and the micro-grid atomization zone comprises an atomization nozzle with a micro-grid atomization sheet; The plasma generation module is powered by a power supply, one end of the plasma generation module is communicated with the air pump, the other end of the plasma generation module is communicated with the air inlet pipe of the upper cover of the detachable chamber, and gas is input into the plasma generation module through the air pump and generates plasma activated gas containing plasma active particles; the air pump is powered by the power supply module and is used for pumping ambient air into the plasma generation module; the power supply module is used for respectively supplying power to the air pump, the plasma generation module and the micro-grid atomization area; The control module is connected with the power module and used for respectively controlling the working states of the air pump, the plasma generation module and the micro-grid atomization area, and the control module sends out a control instruction to control the air pump to pump ambient air to the plasma generation module at a stable flow rate; The flowmeter is used for visualizing the flow rate of the plasma activation gas which is introduced into the handheld activation atomization integrated module; The pipeline interface atomization guide sleeve is used for being in accurate butt joint with a pipeline port to guide fog particles carrying active substances to be sprayed into the pipeline in a directional manner and to be deep towards the far end, is made of hard medical grade plastic and flexible sealing silica gel in a compound manner and is of a stepped tubular structure as a whole, one end of the pipeline interface atomization guide sleeve is a tapered guide cavity which is in sealing connection with an atomization nozzle of a micro-grid atomization area, streamline guide ribs are arranged in the guide cavity and can comb fog flow directions, promote fog particle spraying pressure, push atomization plasma to be deep axially along the pipeline to avoid fog particles to spread at the pipeline port or deposit at a bifurcation node, the other end of the pipeline interface is a replaceable adapting port, various pipeline ports such as round and tubular are adapted through changing silica gel bushings with different inner diameters, the inner side of the interface is provided with an annular sealing gasket, fog particles can be prevented from leaking after butt joint, the fog particles are continuously deep through the pipeline interface atomization guide sleeve according to set flow speed under the action of an air pump, and are deposited and disinfected at various parts in an elongated bifurcation pipeline; And the waste gas treatment module is used for collecting and performing innocent treatment on the plasma activated gas in the solution activation cavity.
2. The plasma atomizer of claim 1 wherein said control unit is connected to said micro-grid type atomizer plate, said control unit sending instructions to said atomizer plate, said atomizer plate generating activated water mist particles based on said instructions.
3. The plasma atomizer of claim 1 wherein said air inlet tube is further provided at its distal end with an air outlet orifice for reducing the volume of air bubbles when the reactive gas is introduced into the aqueous solution, thereby increasing the specific surface area of the air bubbles to the aqueous solution.
4. The plasma nebulizer of claim 1, wherein the control unit is a single chip microcomputer, a digital signal processor, an application specific integrated circuit ASIC, or a field programmable gate array FPGA, the control unit comprising a memory and a timer, the memory comprising one or more read only memory ROM, random access memory RAM, flash memory, or electronically erasable programmable read only memory EEPROM.
5. The plasma atomizer of claim 1 further comprising a voltage sensor for measuring a direct current voltage, a flow rate sensor for measuring a velocity of discharged activated water mist particles, and an alarm unit, said control unit being connected to said voltage sensor, flow rate sensor, and alarm unit, said control unit issuing an alarm command to said alarm unit when said sensor detects a decrease in voltage or flow rate beyond a predetermined range.
6. The plasma atomizer of claim 1 wherein said plasma generation module is configured to operate as a tubular dielectric barrier corona discharge, said plasma generation module comprising a central copper core configured as a high voltage electrode, said central copper core being surrounded by an inner glass tube and an outer glass tube, said outer glass tube being connected to a ground electrode, gas input via an activating gas pump being circulated in a gas passage between said inner glass tube and said outer glass tube to generate an atmospheric pressure cold plasma.
7. The plasma atomizer of claim 1 wherein said handheld activation atomizing integrated module controls the diameter of mist particles emitted from the atomizing plate by setting an oscillation frequency or a mesh of a predetermined diameter, said mist particle diameter not exceeding 5 microns.
8. The plasma atomizer of claim 1 wherein said plasma generation module discharges in a manner including dielectric barrier discharge, jet discharge, corona discharge or sliding arc discharge, said aqueous solution comprising saline, purified medical water or other pre-formed solution.

Description

Plasma atomizer for disinfecting slender forked pipeline structure Technical Field The invention relates to the technical field of plasma treatment, in particular to a plasma atomizer for disinfecting an elongated bifurcation pipeline structure. Background In recent years, plasma sterilization has been gradually applied to the fields of surface sterilization and space sterilization as a novel green technology by virtue of the strong oxidizing property of active particles (such as hydroxyl radicals and ozone ions), and the advantages of convenient preparation, high sterilization efficiency, greenness and no residues. Studies have shown that the action of atmospheric cold plasma with water can produce plasma activated water carrying active particles, which have broad-spectrum inactivation on common bacteria. By atomizing the plasma activated water, the contact area between the active substance and the surface of the object to be disinfected is increased, so that the disinfection efficiency can be further improved, and the plasma activated water has great potential for replacing chemical disinfectants such as chlorine-containing disinfectants. However, there is still technical gap in the current plasma atomizer devices for elongated bifurcated tubes. The slender bifurcation pipeline structure has the characteristics of narrow channels, multiple bifurcation nodes, easy adhesion of pollutants on the inner wall, difficult uniform coverage of disinfection media and the like, such as human respiratory tract, hydraulic bifurcation pipelines in precise instruments, bifurcation pipelines of household water purifying equipment and the like. The existing device is designed for disinfecting the space or object surface by adopting a high-frequency ultrasonic or compressed air principle, and has the following problems that an ultrasonic atomizer converts disinfectant into aerosol particles through high-frequency vibration of an ultrasonic thin plate, the atomization rate is high, liquid particles are large and are difficult to flow smoothly in an elongated pipeline, most of the mist particles can only be deposited at an inlet of the elongated forked pipeline and cannot reach the far end of the pipeline for disinfecting and sterilizing, the compressed air atomizer pulverizes the disinfectant into liquid particles under the action of external airflow through a Venturi effect, large liquid particles fall back through secondary screening, small liquid particles are sprayed out, the device is large in size, and when in operation, the device generates large noise pollution, and the user is easy to feel restless. Through investigation, compared with the two atomization modes, the micro-grid atomization has the advantages of small generated mist diameter, low noise, small volume and the like, and can meet the requirements of disinfection for a long and thin bifurcation pipeline structure. The respiratory tract of the human body is a typical slender bifurcation pipeline structure, and when bacteria invade to cause inflammation and produce sputum, an aerosol inhalation method is often used as a treatment scheme in clinic. The aerosol inhalation means that the medicine is caused to enter the respiratory tract and be deposited in a respiratory inhalation mode, and the aerosol inhalation directly acts on the respiratory tract and lung focus, so that the respiratory tract can be effectively moistened, the protein crosslinking degree of viscous sputum in the respiratory tract of a patient with tuberculosis is reduced, the sputum is diluted, cough reflection is caused by stimulating the respiratory tract mucosa, further sputum is induced to be discharged, residues in the focus are drained, the focus is purified, and the rehabilitation of the patient with tuberculosis can be promoted by matching with relevant nursing measures. According to researches, the plasma activated aqueous solution can not only effectively inactivate drug-resistant mycobacterium tuberculosis, but also enhance the sensitivity of the plasma activated aqueous solution to the anti-tuberculosis drug rifampicin, has smaller irritation to respiratory tract mucous membrane tissues compared with the traditional antibiotic atomization, can reduce the toxic and side effects and drug resistance of the liver caused by chemical drugs such as antibiotics and the like, and has the potential of replacing the antibiotics to be used as atomized liquid medicine. Disclosure of Invention Object of the invention The invention aims to provide a plasma atomizer for sterilizing an elongated bifurcation pipeline structure, which can be used for sterilizing and disinfecting a common elongated bifurcation pipeline structure, integrates plasma activating solution and micro-grid atomization, the plasma activated mist with active particles can be sprayed out, and then the plasma activated mist is connected into the pipeline interface atomization guide sleeve which is matched with the spray outlet