CN104225638A - Plasma atomized sterilization device with temperature of lower than 80 DEG C - Google Patents
Plasma atomized sterilization device with temperature of lower than 80 DEG C Download PDFInfo
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- CN104225638A CN104225638A CN201410399747.9A CN201410399747A CN104225638A CN 104225638 A CN104225638 A CN 104225638A CN 201410399747 A CN201410399747 A CN 201410399747A CN 104225638 A CN104225638 A CN 104225638A
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Abstract
The invention discloses a plasma atomized sterilization device with a temperature of lower than 80 DEG C. The device comprises a plasma generation module, wherein the plasma generation module comprises a discharge electrode which is capable of generating plasma in water mist at a temperature of lower than 80 DEG C by means of dielectric barrier discharge. The device can be used for discharging by utilizing the water mist, does not need other additives, has a temperature of lower than 80 DEG C, is suitable for treating heat-sensitive materials, and is capable of greatly improving the sterilization effect since massive negative oxygen ions are generated; and the device is operated at the atmospheric pressure, does not need a vacuum cavity, is simple in equipment and convenient to operate, and cannot generate toxic residues after the heat-sensitive materials are treated by plasma.
Description
Technical field
The present invention relates to material sterilization technology field, particularly a kind of atmos low-temperature plasma is to the sterilizing of medical material.
Background technology
The sterilizing of heat-sensitive material, particularly medical material is a very important link.Such as all to carry out thorough sterilizing according to standard with blood and mucosal contact or the medical material (such as disposable syringe, cardiac catheter, artificial joint etc.) be implanted in body.If the not sterilizing as requested of this kind of medical material, be then easy to cause infection, even cause life danger.
Existing sterilizing methods has a lot, and such as moist heat sterilization, puts into pressure cooker by material exactly, utilizes heating power and dampness sterilizing, although this method is simple and reliable, the material of some non-refractories holds can't stand high temperature, also has method of chemical treatment, but the processing time is long, and there is the Harmful Residue, such as ethylene oxide sterilizing, it is by the sulfydryl (-SH) on oxirane and protein molecule, amino (NH2), there is alkylated reaction in the imino group (-NH-) on hydroxyl (-OH) and carboxyl (-COOH) and nucleic acid molecules, protein is caused to lose reactive group, hinder normal biochemical reaction and the metabolism of protein, cause microbial death, thus reach sterilization effect, but oxirane has carcinogenecity, the toxicity such as mutagenicity, be unfavorable for the safety of staff, finally also has radiation sterilization, exactly sterilising prods is put in the gamma-rays of suitable radioactive source radiation or the electron beam of suitable electron accelerator generation and carries out ionizing radiation generation free radical by controlling radiation condition thus killing microorganisms, but this also to consider effectiveness and the safety of radiation dose.So seek conveniently a kind of, efficiently, economic bactericidal unit is very important.
Developing rapidly and in the extensive use of biomedical aspect, utilizing low temperature plasma to carry out sterilizing and there is very wide application prospect along with lower temperature plasma technology.A large amount of experimentatioies shows, has very abundant active particle, such as ozone and hydroxyl etc. in discharge plasma, also has a large amount of high energy particle and electronics.These particles can make the activity of material surface antibacterial significantly decline at short notice even thoroughly to kill.And the present invention utilizes water smoke to discharge, not only have above-mentioned particle to generate, more can produce a large amount of negative oxygen ions, these negative oxygen ions have very strong redox, can destroy the cell membrane of antibacterial or the activity of the former even organized enzyme of cell.
Summary of the invention
For above-mentioned subproblem, the present invention proposes a kind of plasma lower than 80 DEG C and be atomized bactericidal unit, described device comprises plasma generation module, described plasma generation module comprises sparking electrode, and described sparking electrode produces plasma by dielectric barrier discharge in lower than the water smoke of 80 DEG C.
Optionally, described device also comprises water smoke generation module, and described water smoke generation module, for generation of water smoke, comprises water-mist outlet, and it has water-mist outlet so that the water smoke produced flows out.
Optionally, described device also comprises heating module, and described heating module is used for heating water smoke, and the water smoke after heating enters plasma generation module.
Optionally, described device also comprises the sterilization chamber for cuboid or other shapes, and described sterilization chamber comprises water smoke entrance, is connected with plasma generation module is airtight.
Preferably, described sterilization chamber also comprises recycling module, for reclaiming the residue after sterilizing.
Preferably, described device also comprise current monitor and discharge time controller, for Real-Time Monitoring discharge voltage and electric current and controlled discharge time.
Optionally, described sparking electrode is pin-barrel structure, comprises needle-like high-field electrode, tubular ground electrode and medium cylinder, and the material of described medium cylinder comprises glass, pottery and other insulant.
Optionally, described sparking electrode is pin-plate structure, comprises needle-like high-field electrode, tabular ground electrode, and the material of described tabular ground electrode comprises glass, pottery and other insulant.
Preferably, described needle-like high-field electrode is tungsten pin, and its quantity is more than or equal to 1, and its shape comprises aciculiform, S shape, spiral type or the cuspidated shape of other tool.
Wherein, described plasma generation module also comprises high voltage power supply, and described high voltage power supply is connected with sparking electrode, for providing high-tension electricity for plasma generation module.
Preferably, described high voltage power supply is sinusoidal high voltage power supply, and the peak-to-peak value range of choice is 1kV to 20kV, and frequency range is 50Hz to 1GHz, and the voltage of described high voltage power supply and frequency can be conditioned.
Preferably, when described high voltage power supply is pulsed high voltage generator, its voltage range is 1kV-20kV, pulses range 50Hz to 1GHz, and the voltage of described high voltage power supply and frequency can be conditioned.
Preferably, described water smoke generation module comprises supersonic generator and blower fan, water atomization in water smoke generation module is produced water smoke by supersonic generator by described water smoke generation module, by blower fan, described water smoke is discharged from described water-mist outlet, and: regulate the ultrasonic power of described supersonic generator can change the speed of water smoke generation.
Bactericidal unit of the present invention has the following advantages: (1) the present invention utilizes temperature lower than 80 DEG C of water smokes as reacting gas, and without the need to other additives, be applicable to processing heat-sensitive material, particularly medical material carries out sterilizing; (2) sparking electrode of the present invention directly contacts with water smoke, and most of water smoke can be made by electrode, realizes the bump contact with plasma, improves treatment effeciency; (3) the present invention utilizes water smoke to discharge, and can produce a large amount of negative oxygen ion, greatly can improve sterilization effect, and can not produce toxic residue; (4) by the control to water smoke temperature, water-vapo(u)r saturation degree can be improved, regulate active particle composition; (5) water smoke heated not easily condenses in plasma treatment module, and the chance condensation of processed material surface gathers in sterilization chamber, and the more effective active particle by plasma generation is transported to processed material surface, improves sterilizing efficiency; (6) by regulating frequency or the voltage of ultrasonic frequency and high voltage power supply, the speed of the speed that water smoke is produced and plasma generation can adjusted in concert, and active particle density is improved, and sterilizing efficiency is higher; (7) plasma producing apparatus under atmospheric pressure operates, and without the need to vacuum chamber, equipment is simple, easy and safe to operate.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is the structural representation of embodiment;
Fig. 3 is the structural representation of another embodiment.
Detailed description of the invention
For the present invention, most basic embodiment is to propose: a kind of plasma lower than 80 DEG C is atomized bactericidal unit.This device comprises plasma generation module, and described plasma generation module comprises sparking electrode, and described sparking electrode produces plasma by dielectric barrier discharge in lower than 80 DEG C of water smokes.
In this embodiment, utilize lower than the water smoke of 80 DEG C as reacting gas, without the need to other additive, be applicable to processing heat-sensitive material, when plasma carries out sterilizing to material, do not have harmful substance to remain, be particularly suitable for medical material and carry out sterilizing.By electrode, the water smoke be placed in lower than 80 DEG C carries out dielectric barrier discharge, improve reaction efficiency, not only can produce the ozone and hydroxyl particle that the activity of material surface antibacterial can be made significantly to decline at short notice even thoroughly kill, also can produce a large amount of negative oxygen ions simultaneously, these negative oxygen ions can generate water membrane in its surface liquefaction in conjunction with water smoke after encountering the lower material of temperature, utilize the redox that negative oxygen ion is strong, the cell membrane of antibacterial or the activity of the former even organized enzyme of cell can be destroyed, and then the deactivation realized antibacterial, and can not heat labile material not damaged higher than the temperature of 80 DEG C, thus the sterilizing of medical material is specially adapted to.With regard to this embodiment, how not produce higher than the water smoke of 80 DEG C the effect not affecting this embodiment.
Below in conjunction with accompanying drawing, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
The present embodiment stresses the plasma generation module 300 specifically introduced in basic embodiment, and as shown in Figures 2 and 3, something in common repeats no more.Described plasma generation module 300 is except comprising the sparking electrode 302 in basic embodiment, also comprise high voltage power supply 301, described high voltage power supply 301 is connected with sparking electrode 302, and described high voltage power supply 301 is for providing high-tension electricity for plasma generation module 300.
Described high voltage power supply 301 can be sinusoidal high voltage power supply, and the peak-to-peak value range of choice is at 1kV to 20kV, and frequency range is 50Hz to 1GHz.In radio frequency range, the temperature of plasma can raise, and adopts certain measure to control in 80 DEG C, can play the effect of heating water smoke.
Described high voltage power supply 301 can also be 1kV-20kV for the voltage range of pulsed high voltage generator, its pulses range 50Hz to 1GHz.For pulsed high voltage generator, the frequency of high voltage power supply is higher, then the processing speed of plasma is faster, then slower on the contrary, and the frequency of pulsed high voltage generator is higher, and the processing speed of plasma is faster, but discharge voltage is lower.With regard to the present embodiment, under pulsed high-voltage source forcing, the formation efficiency of active particle is higher, reduces total discharge power simultaneously.
Preferably, the voltage of the high voltage power supply 301 of this device or frequency can regulate.The speed that plasma can be made to produce by the voltage or frequency that regulate high voltage power supply 301 can match with the speed of water smoke flowing, to make the active particle density in the plasma of generation high, and reaches higher sterilizing efficiency.Therefore, when the speed of water smoke flowing, paired pulses power supply, can heighten the frequency of high voltage power supply 301, then turn down on the contrary or turned down by the voltage of high voltage power supply 301, on the contrary, then heighten; Offset of sinusoidal high voltage power supply, can heighten the voltage of high voltage power supply 301 or frequency, then turn down on the contrary.
Described sparking electrode 302 can be pin-barrel structure, comprises needle-like high-field electrode, tubular ground electrode and medium cylinder.The material of described medium cylinder is insulant, and preferably, described medium cylinder is made up of glass, preferred, and described medium cylinder is made up of ceramic material.
Preferably, several pins-barrel structure sparking electrode can be lined up and form electric discharge matrix, thus increase plasma density, improve treatment effeciency.
Described sparking electrode 302 can also be described sparking electrode is pin-plate structure, comprise needle-like high-field electrode, tabular ground electrode, the material of described tabular ground electrode is insulant, and preferably, the material comprises glass of described tabular ground electrode is made, more excellent, the material of described tabular ground electrode is made up of ceramic material, and tabular ground electrode can cover one deck dielectric material, such as can cover glass, pottery or other dielectric etc.
Preferably, several described pin-plate structure sparking electrode can be combined, improve treatment effeciency.
Further, described needle-like high-field electrode is tungsten pin, and its quantity is more than or equal to 1, and its shape comprises aciculiform, S shape, spiral type or the cuspidated shape of other tool.
In the present embodiment, described plasma producing apparatus under atmospheric pressure operates, and without the need to vacuum chamber, equipment is simple, easy and safe to operate.
Embodiment 2
The present embodiment stresses to introduce the difference with front embodiment, and something in common repeats no more.The difference of the present embodiment and front embodiment is, this device can also comprise water smoke generation module, described water smoke module has water-mist outlet, be connected with plasma generation module is airtight by described water-mist outlet, but in this embodiment, how water smoke is heated the effect not affecting this embodiment.
Water smoke generation module can utilize hyperacoustic mode to make water fogging, and produces temperature lower than the water smoke of 80 DEG C degrees Celsius.Preferably, in water smoke generation module, can blower fan be provided with, by blower fan, the water smoke produced be blown out the housing of water smoke generation module by the water-mist outlet of water smoke generation module.
Described water smoke generation module also can adopt commercially available humidifier, and utilize humidifier to produce water smoke, water smoke blows out from the water-mist outlet of humidifier.
More excellent, water smoke generation module uses supersonic generator, and uses supersonic generator to produce water smoke, and water smoke produces speed and can be conditioned.Can by the size regulating the power of supersonic generator to change the generation speed of water smoke during specific implementation, when power increases, water smoke produces speed increases, and during power reduction, water smoke generation speed reduces.
Further, described device can by regulating frequency or the voltage of hyperacoustic frequency and high voltage power supply, the speed that the speed that water smoke is produced and plasma produce carries out adjusted in concert, the active particle density obtained like this is very high, thus just can reach good sterilization effect in a short period of time.
Embodiment 3
The present embodiment stresses to introduce the difference with front embodiment, and something in common repeats no more.The difference of the present embodiment and front embodiment is, this device can also increase heating module 200.
Optionally, how water smoke in the present embodiment produced and how flow and do not consider.Whether the effect of described heating module is to ensure that water smoke is the water smoke lower than 80 DEG C when entering plasma generation module, and where is in for heating module, be connected do not consider with plasma generation module.
Preferably, described heating module can be arranged between water smoke generation module 100 and plasma generation module 300 by described device, as shown in Figure 1, heating module 200 is connected with water-mist outlet 102 is airtight, and this module is used for heating the water smoke generated and the water smoke after heating being transported to plasma generation module 300.Described heating module 200 can, by controlling temperature, make water smoke temperature raise but be no more than 80 DEG C, is conducive to the water-vapo(u)r saturation degree increasing water smoke like this, and then can also regulates the active particle composition in water smoke.
The mode of heating of described heating module can heat for metal electric heating pipe, or Resistant heating, or Electromagnetic Heating, can also be other mode of heating.
Embodiment 4
As shown in Figure 1, the present embodiment stresses the difference introduced with basic embodiment and is, the basis of basic embodiment can also go out sterilization chamber 400 by Further Division.
Described sterilization chamber 400 is closely connected with plasma generation module 300, and its cavity can be cuboid, can also be other shapes, comprise water smoke entrance.Active particle in plasma, after water smoke activation, sprays into cavity by water smoke entrance, to carry out disinfection sterilization treatment to material wherein.
Order is entered plasma generation module and sterilization chamber by the water smoke of heating, water smoke after heating not easily condenses in plasma treatment module, and the chance condensation of processed material surface gathers in sterilization chamber, the more effective active particle by plasma generation is transported to processed material surface, improves sterilizing efficiency.
Embodiment 5
The present embodiment stresses to introduce the difference with front embodiment, and something in common repeats no more.The difference of the present embodiment and front embodiment is, can also arrange recycling module in sterilization chamber 400, for reclaiming the residue after sterilizing.
Embodiment 6
The present embodiment stresses to introduce the difference with front embodiment, and something in common repeats no more.The difference of the present embodiment and front embodiment is, this device can also arrange current monitor and discharge time watch-dog, for Real-Time Monitoring discharge current and controlled discharge time.
Each embodiment in this description all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.For system embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Above to bactericidal unit provided by the present invention, be described in detail, apply specific case herein and set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for the general technology people of this area, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. one kind lower than 80 DEG C plasma atomization bactericidal unit, it is characterized in that: preferred, described device comprises plasma generation module, and described plasma generation module comprises sparking electrode, and described sparking electrode produces plasma by dielectric barrier discharge in lower than the water smoke of 80 DEG C.
2. device according to claim 1, is characterized in that: described device also comprises water smoke generation module, and described water smoke generation module is for generation of water smoke, and it has water-mist outlet so that the water smoke produced flows out.
3. device according to claim 1, is characterized in that: described device also comprises heating module, and described heating module is used for heating water smoke, and the water smoke after heating enters plasma generation module.
4. device according to claim 1, is characterized in that: described device also comprises the sterilization chamber for cuboid or other shapes, and described sterilization chamber comprises water smoke entrance, is connected with plasma generation module is airtight.
5. device according to claim 4, is characterized in that: described sterilization chamber also comprises recycling module, for reclaiming the residue after sterilizing.
6. device according to claim 1, is characterized in that: described device also comprise current monitor and discharge time controller, for Real-Time Monitoring discharge current and controlled discharge time.
7. device according to claim 1, is characterized in that: described sparking electrode is pin-barrel structure, comprises needle-like high-field electrode, tubular ground electrode and medium cylinder, and the material of described medium cylinder comprises glass, pottery and other insulant.
8. device according to claim 1, is characterized in that: described sparking electrode is pin-plate structure, comprises needle-like high-field electrode, tabular ground electrode, and the material of described tabular ground electrode comprises glass, pottery and other insulant.
9. the device according to the arbitrary claim of claim 7 or 8, is characterized in that: described needle-like high-field electrode is tungsten pin, and its quantity is more than or equal to 1, and its shape comprises aciculiform, S shape, spiral type or the cuspidated shape of other tool.
10. the device according to the arbitrary claim of claim 1 ~ 7, is characterized in that: described plasma generation module also comprises high voltage power supply, and described high voltage power supply is connected with sparking electrode, for providing high-tension electricity for plasma generation module.
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Cited By (9)
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| CN104707154A (en) * | 2015-02-13 | 2015-06-17 | 西安交通大学 | Dry-wet plasma sterilization device and method |
| CN104990138A (en) * | 2015-05-28 | 2015-10-21 | 广东美的制冷设备有限公司 | Air purifier, household electrical appliance and air purifying method |
| CN105858617A (en) * | 2016-04-08 | 2016-08-17 | 复旦大学 | Device and method for preparing hydrogen peroxide by using plasma discharge |
| CN106491643A (en) * | 2016-10-26 | 2017-03-15 | 西安交通大学 | A kind of preparation facilitiess of plasma-activated hydrogen peroxide solution and preparation method |
| CN110092446A (en) * | 2018-01-29 | 2019-08-06 | 西安交通大学 | The system and method for plasma-activated water of the preparation for sterilizing in cavity |
| JP2019531105A (en) * | 2016-06-30 | 2019-10-31 | スリーエム イノベイティブ プロパティズ カンパニー | Plasma sterilization system and method |
| CN112998065A (en) * | 2021-02-24 | 2021-06-22 | 华南理工大学 | Device and method for preventing and controlling mango anthracnose based on plasma active hot water |
| CN113841735A (en) * | 2021-09-14 | 2021-12-28 | 大连理工大学 | Normal-pressure air water mist plasma sterilization device and method for cheese sterilization |
| CN114923244A (en) * | 2022-06-23 | 2022-08-19 | 珠海格力电器股份有限公司 | Plasma humidifying device and air purifier |
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| CN110092446A (en) * | 2018-01-29 | 2019-08-06 | 西安交通大学 | The system and method for plasma-activated water of the preparation for sterilizing in cavity |
| CN112998065A (en) * | 2021-02-24 | 2021-06-22 | 华南理工大学 | Device and method for preventing and controlling mango anthracnose based on plasma active hot water |
| CN113841735A (en) * | 2021-09-14 | 2021-12-28 | 大连理工大学 | Normal-pressure air water mist plasma sterilization device and method for cheese sterilization |
| CN114923244A (en) * | 2022-06-23 | 2022-08-19 | 珠海格力电器股份有限公司 | Plasma humidifying device and air purifier |
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Application publication date: 20141224 |