CN101810870A - Method and device for controlling precise measurement of hydrogen sulfide pulsation injecting liquid through pressure degenerative feedbacks - Google Patents
Method and device for controlling precise measurement of hydrogen sulfide pulsation injecting liquid through pressure degenerative feedbacks Download PDFInfo
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- CN101810870A CN101810870A CN 201010148545 CN201010148545A CN101810870A CN 101810870 A CN101810870 A CN 101810870A CN 201010148545 CN201010148545 CN 201010148545 CN 201010148545 A CN201010148545 A CN 201010148545A CN 101810870 A CN101810870 A CN 101810870A
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Abstract
The invention relates to a method for controlling precise measurement of hydrogen sulfide pulsation injecting liquid through pressure degenerative feedbacks. The method comprises the steps of placing articles to be disinfected in a sterile chamber for disinfection; using a vacuum system to extract vacuum or inflate for the sterile chamber in which the articles to be disinfected are placed; using a plasma generating device to excite the generation of plasmas; using pressure variation signals obtained by a testing control system in the sterile chamber to control a hydrogen peroxide injecting system and determine the dosage of an injected hydrogen peroxide disinfectant, and the injected hydrogen peroxide is excited by the plasmas. Thus, the hydrogen peroxide medium in the plasmas is fully excited, too much or too little injection of the hydrogen peroxide is prevented and precise control of the dosage of the hydrogen sulfide is achieved.
Description
Technical field
The present invention relates to the sterilizing methods of plasma sterilizer, more specifically, relate to method and device by the accurate measurement of pressure negative feedback control hydrogen peroxide pulsation injecting liquid.
Background technology
Plasma is a kind of particular matter form of extensively being present in occurring in nature (gaseous state, liquid state, the 4th a kind of form outside solid-state), a kind of high-octane material aggregation attitude.That forms plasma not only has molecule and an atom, also has many charged particles, and the energy of its particle does not wait to several thousand eV from several eV approximately, thereby it has special physicochemical property, with the interaction of material in can produce many special physics and chemical effect.The plasma sterilization technology is the new physical sterilization technology that the Disinfection field occurs in recent years, adopt the sterilization technology of hydrogen peroxide plasma as biocide, compare with existing conventional sterilization technology equipment, has significant advantage: for example, for the plastic cement that is not suitable for disinfecting with high-temperature steam method and infrared method, optical fiber, artificial intraocular lenses and optical glass material, be not suitable for metal with the microwave method processing, and the places such as corner, slit that are difficult for reaching Disinfection Effect, the using plasma sterilization technology can reach well at low temperatures and disappear the bacterium sterilization treatment and can not cause damage to processed article; With clinical hydrogen peroxide (H commonly used
2O
2) be medium, form plasma and finish sterilization through the radio-frequency electromagnetic field excitation, the plasma sterilization mechanism of action that with the hydrogen peroxide is medium is: compositions such as a large amount of active oxygen ions that contain in the plasma, the free group of high energy, very easily with antibacterial, mycete and spore, virus in protein and nucleic acid substances generation oxidation reaction and degeneration makes all kinds of microbial deaths; Plasma high speed particle breakdown effects, after the sterilization experiment, by antibacterial thalline and the virion image of electron microscopic observation after action of plasma, all present riddled with gaping wounds shape, this is by due to the puncture etch effects of electronics with kinetic energy and ion generation; Action of ultraviolet ray is exciting H
2O
2Form in the process of plasma, be attended by the part ultraviolet and produce, this high energy ultraviolet photon is absorbed by protein in microorganism or the virus, causes its molecule degeneration inactivation.And the end product of plasma is a small amount of water vapor and oxygen, and the residual and discharge of non-poisonous material is harmless to the medical worker, environmentally safe.And sterilising temp is low, and sterilising cycle is short, and applied widely, easy and simple to handle, energy consumption is low.
The hydrogen peroxide injection mode of common plasma sterilizer has: capsule punctures injection mode, the atomizing injection mode of 2 heating, modes such as ultrasonic atomizatio injection mode, aforesaid way can be realized the injection to the hydrogen peroxide of steriliser, but exist the dosage of hydrogen peroxide uncontrollable, when the hydrogen peroxide medium dosage that adds too small, may cause sterilization not thorough, cause apparatus contamination, produce serious harm, if and the hydrogen peroxide medium that adds is excessive, decomposing incomplete words makes the sterilizing objects surface have residual peroxide, residual hydrogen peroxide can damage user, influences the health of user.Therefore, by the dosage of the hydrogen peroxide in the control injected plasma sterile chamber, realize that the hydrogen peroxide medium is excited fully, prevents H in plasma
2O
2Injecting too much or very few situation is the problem that needs solution.
Summary of the invention
Be the purpose that realizes the dosage of hydrogen peroxide is accurately controlled, the invention provides a kind of method and device by the accurate measurement of pressure negative feedback control hydrogen peroxide pulsation injecting liquid, prevent that hydrogen peroxide from injecting too much or very few situation and taking place, realize the dosage of hydrogen peroxide is accurately controlled.
For this purpose, the solution of the present invention provides a kind of method by the accurate measurement of pressure negative feedback control hydrogen peroxide pulsation injecting liquid, and this method comprises:
Article to be sterilized are positioned over the sterile chamber to carry out disinfection;
Utilize vacuum system that the sterile chamber that is placed with article to be sterilized is carried out extracting vacuum or inflation;
Utilize the plasma generating device in the sterile chamber to excite the generation plasma;
Utilize the pressure change signal in the sterile chamber of detecting the control system acquisition, control the hydrogen peroxide biocide dosage that hydrogen peroxide injected system and decision are injected, the hydrogen peroxide of described injection is excited by plasma.
Wherein, this method further comprises, writes down the related data of plasma sterilizer operation by recording system.
Wherein, the data of utilizing described detection control system collection vacuum measurement element and pressure transducer to record, obtain the pressure change signal in the sterile chamber, this detections control system is controlled and adjusting hydrogen peroxide implantation dosage, temperature, electromagnetic valve are opened time, fluid injection total time, electromagnetic valve and opened number of times, injection pressure.
Wherein, hydrogen peroxide injects by the mode of pulsation, evenly injects with 20 times/second speed.
The present invention also provides a kind of device by the accurate measurement of pressure negative feedback control hydrogen peroxide pulsation injecting liquid, comprise sterile chamber, vacuum system, plasma generating device and detect control system and hydrogen oxide injected system, wherein, described excitation device has radio-frequency power supply, mesh-like antenna, by described radio-frequency power supply is applied on the mesh-like antenna with activated plasma, wherein, this mesh-like antenna is arranged on the inner relative inwall in sterile chamber by insulating support.
Wherein, described vacuum system, comprise vacuum pump, filter aerator, gas tube, vacuum tube, second valve etc., its intermediate pump carries out extracting vacuum by vacuum tube to the sterile chamber, described second valve is controlled extracting vacuum, filter aerator and gas tube the air pressure of sterile chamber is regulated, the gas that control charges into the sterile chamber carries out concora crush to vacuum chamber.
Wherein, described hydrogen peroxide injected system comprises fluid reservoir, first valve, electromagnetic valve, vaporization and metering device, and hydrogen peroxide is injected in the sterile chamber by pulsating by described hydrogen peroxide injected system, forms hydrogen peroxide plasma.
Thereby, realize that the hydrogen peroxide medium is excited fully in plasma, prevent that hydrogen peroxide from injecting too much or very few situation and taking place, realize the dosage of hydrogen peroxide is accurately controlled.
Advantage of the present invention will by hereinafter in conjunction with the accompanying drawings in to the detailed description of embodiment and more obvious.
Description of drawings
The cross section structure sketch map of Fig. 1 plasma sterilizer;
Fig. 2 steriliser workflow sketch map.
Reference numeral: 1. mesh-like antenna; 2. hydrogen peroxide liquid; 3. fluid reservoir; 4. vaporize and metering device; 5. insulating support; 6. heater; 7. temperature element; 8. sterile chamber; 9. vacuum measurement element; 10. recording system; 11. detection control system; 12. vacuum system; 13. valve B; 14. radio-frequency power supply; 15. dc source; 16. electromagnetic valve; 17. valve A.
The specific embodiment
Fig. 1 is the cross section structure sketch map of plasma sterilizer, by the description to the structure of steriliser, with operation principle and the concrete using method that this steriliser is described.
The agent structure of this plasma steriliser is sterile chamber 8, this sterile chamber is column type or rectangular configuration, when using this plasma sterile chamber to sterilize, in article placement to be sterilized and sterile chamber 8, the top of 8 inside, sterile chamber and bottom are provided with the mesh-like antenna 1 that is used for activated plasma, the connection mesh-like antenna that is positioned at the place, top is fixed in the sterile chamber 8 by insulating support 5, wherein, this mesh-like antenna 1 also can be arranged on the relative inwall in 8 inside, sterile chamber by insulating support.Can produce plasma by on this mesh-like antenna 1, applying power supply, exciting.Sterile chamber 8 is connected with a plurality of parts such as radio-frequency power supply 14, dc source 15, detection control system 11, recording system 10, vacuum system 12, hydrogen peroxide injected systems.Sterile chamber 8 is formed for the plasma that excites the hydrogen peroxide medium to carry out disinfection by plasma generating device, wherein, this plasma generator comprises mesh-like antenna, radio-frequency power supply, dc source, insulating support, sterile chamber's inwall etc., by applying radio-frequency power supply, the mesh-like antenna 1 that is arranged on sterile chamber's inwall excites the medium that is positioned at sterile chamber 8, produces plasma.
On the inwall of sterile chamber 8, be provided for measuring the temperature element 7 of this sterile chamber's internal temperature, this temperature element 7 can be that thermal detector, thermometer or thermocouple etc. can be realized device that temperature is detected, the outer wall of this sterile chamber is provided with heater 6, and this heater can be used for hydrogen peroxide is heated.In addition, on the inwall of this sterile chamber 8, further be provided with vacuum measurement element 9, this vacuum measurement element 9 is used to detect the vacuum in the sterile chamber, this vacuum measurement element 9 can be vacuometer, vacuum silicone tube or other vacuum measuring device.
Vacuum system 12 comprises vacuum pump, filters aerator, gas tube, vacuum tube etc., its intermediate pump carries out extracting vacuum by the pipeline of vacuum tube to the sterile chamber, this vacuum pump can be selected the mechanical pump that is drawn into 0.1Pa vacuum for use, filtering aerator and gas tube regulates the air pressure of sterile chamber, the gas that control charges into the sterile chamber carries out concora crush to vacuum chamber.
The hydrogen peroxide injected system comprises fluid reservoir 3, valve A17, electromagnetic valve 16 and hydrogen peroxide vaporization and the measuring device 4 of storing hydrogen peroxide liquid 2, wherein, this hydrogen peroxide vaporization and metering device 4 link to each other with sterile chamber 8, the hydrogen peroxide liquid of passing through from electromagnetic valve 16 is vaporization in device 4, because the air pressure in the sterile chamber 8 is little, the liquid of device in 4 is vaporized and evenly is diffused in the sterile chamber 8, and hydrogen peroxide is excited, and the plasma of generation is treated the sterilizing objects sterilization that carries out disinfection.Valve A is between fluid reservoir 3 and hydrogen peroxide vaporization and metering device 4.
Shown in Figure 2, be of the present invention by pressure negative feedback control hydrogen peroxide pulsation injecting liquid accurate measurement sketch map, at first, article to be sterilized can be positioned over sterile chamber 8 to carry out disinfection, utilize vacuum system that the sterile chamber 8 that is placed with article to be sterilized is carried out extracting vacuum or inflation, wherein, by detecting, control system 11 is opened valve B, valve-off A, through vacuum system the air in the sterile chamber 8 is extracted out, be extracted into the vacuum condition of plasma discharge, when keeping pressure stable, the generator of plasma makes plasma begin discharge, forms plasma.
Secondly, by detecting control system 11 valve-off B, opening valve A, program enters into the fluid injection program, automatically the hydrogen peroxide biocide is injected into sterile chamber 8, passes through H
2O
2Vaporization and metering device 4, moment is vaporized into hydrogen peroxide gas with hydrogen peroxide liquid, and evenly is diffused into whole sterile chamber; The sensing data that detects vacuum that control system 11 surveys according to the vacuum measurement element and pressure transducer is judged the state in the sterile chamber 8, calculates the dosage that needs the hydrogen peroxide that adds.
In the fluid injection program, detection control system 11 control electromagnetic valves 16 and hydrogen peroxide vaporization and measuring device 4 are controlled the time of electromagnetic valve 16 unlatchings or the dosage that the liquid of electromagnetic valve 16 is passed through in control according to the implantation dosage that calculates.Wherein, this hydrogen peroxide is heated, is vaporized rapidly through vapourizing unit by heater, this hydrogen peroxide vaporization and metering device 4 link to each other with sterile chamber 8, hydrogen peroxide is through going into the sterile chamber, monitored and the metering of whole process, because the pressure negative feedback in the sterile chamber 8 makes the liquid in the device 4 be vaporized and evenly be diffused in the sterile chamber 8, hydrogen peroxide is excited, and the plasma of generation is treated the sterilizing objects sterilization that carries out disinfection.
Can control and regulate implantation dosage, temperature, electromagnetic valve in real time and open time, fluid injection total time, electromagnetic valve and open number of times, injection pressure by detecting control system 11, recording system 10 can the real time record steriliser related data of operation, electromagnetic valve 16 can also play the hydrogen peroxide gas backflow effect that prevents except that the dosage of the hydrogen peroxide that is used to control adding.
Detect control system and according to pressure transducer and vacuometer etc. the adding of hydrogen peroxide is controlled in the monitoring of inside, sterile chamber, wherein, this hydrogen peroxide injects by the mode of pulsation, evenly injects with 20 times/second speed.The whole process that hydrogen peroxide injects is all carried out under the control that detects control system 11, and is recorded 10 records of system, and the dose accuracy of hydrogen peroxide is controlled at ± 0.001ml.
This plasma steriliser can be according to concrete sterilization requirement, sterilizing objects is carried out multistep sterilizes suddenly, guarantee the disinfectant effect, and in each sterilisation step, dosage owing to accurately controlled the hydrogen peroxide that injects according to the pressure negative feedback in the sterile chamber has guaranteed disinfectant effectiveness and safety.
Although illustrate and described the present invention with reference to embodiments of the invention, but those skilled in the art should understand that, specific embodiments of enumerating in this description or embodiment, only in order to understand technology contents of the present invention, in the case of without departing from the spirit and scope of the present invention, the present invention can carry out multiple change in the form and details.
Claims (7)
1. one kind is passed through the method that the pressure negative feedback controls the accurate measurement of hydrogen peroxide pulsation injecting liquid, and this method comprises:
Article to be sterilized are positioned over the sterile chamber to carry out disinfection;
Utilize vacuum system that the sterile chamber that is placed with article to be sterilized is carried out extracting vacuum or inflation;
Utilize the plasma generating device in the sterile chamber to excite the generation plasma;
Utilize the pressure change signal in the sterile chamber of detecting the control system acquisition, control the hydrogen peroxide injected system, and the hydrogen peroxide biocide dosage of decision injection, the hydrogen peroxide of described injection is excited by plasma.
2. method according to claim 1 is characterized in that: this method further comprises, writes down the related data of plasma sterilizer operation by recording system.
3. method according to claim 1 and 2, it is characterized in that: the data of utilizing described detection control system collection vacuum measurement element and pressure transducer to record, obtain the pressure change signal in the sterile chamber, this detections control system is controlled and adjusting hydrogen peroxide implantation dosage, temperature, electromagnetic valve are opened time, fluid injection total time, electromagnetic valve and opened number of times, injection pressure.
4. method according to claim 3 is characterized in that: hydrogen peroxide injects by the mode of pulsation, evenly injects with 20 times/second speed.
5. one kind is passed through the device that the pressure negative feedback controls the accurate measurement of hydrogen peroxide pulsation injecting liquid, comprise sterile chamber, vacuum system, plasma generating device and detect control system and hydrogen oxide injected system, it is characterized in that: described plasma producing apparatus has radio-frequency power supply, mesh-like antenna, by described radio-frequency power supply is applied on the mesh-like antenna with activated plasma, wherein, this mesh-like antenna is arranged on the inner relative inwall in sterile chamber by insulating support.
6. device according to claim 5, it is characterized in that: described vacuum system, comprise vacuum pump, filter aerator, gas tube, vacuum tube, second valve etc., its intermediate pump carries out extracting vacuum by vacuum tube to the sterile chamber, described second valve is controlled extracting vacuum, filter aerator and gas tube the air pressure of sterile chamber is regulated, the gas that control charges into the sterile chamber carries out concora crush to vacuum chamber.
7. device according to claim 5, it is characterized in that: described hydrogen peroxide injected system comprises fluid reservoir, first valve, electromagnetic valve, vaporization and metering device, hydrogen peroxide is injected in the sterile chamber by pulsating by described hydrogen peroxide injected system, forms hydrogen peroxide plasma.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101485459A CN101810870B (en) | 2010-04-16 | 2010-04-16 | Method and device for controlling precise measurement of hydrogen peroxide pulsation injecting liquid through pressure negative feedbacks |
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| CN2010101485459A CN101810870B (en) | 2010-04-16 | 2010-04-16 | Method and device for controlling precise measurement of hydrogen peroxide pulsation injecting liquid through pressure negative feedbacks |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480019A (en) * | 2013-08-23 | 2014-01-01 | 苏州康华净化系统工程有限公司 | Ultraviolet ray disinfecting system |
| CN105288682A (en) * | 2014-07-31 | 2016-02-03 | 北京白象新技术有限公司 | Washer-disinfector with cloud service function |
| CN105311657A (en) * | 2014-07-31 | 2016-02-10 | 北京白象新技术有限公司 | High-temperature high-pressure sterilizer with cloud service function |
| CN105311667A (en) * | 2014-07-31 | 2016-02-10 | 北京白象新技术有限公司 | Low-temperature plasma sterilizer with cloud service function |
| CN105311658A (en) * | 2014-07-31 | 2016-02-10 | 北京白象新技术有限公司 | Air disinfecting machine with cloud service function |
| CN108686241A (en) * | 2017-04-10 | 2018-10-23 | 莎罗雅株式会社 | Sterilizing methods and bactericidal unit |
| CN113209343A (en) * | 2021-04-19 | 2021-08-06 | 杭州优尼克消毒设备有限公司 | Ethylene oxide sterilizer compatible with mixed gas |
| CN114617999A (en) * | 2017-03-27 | 2022-06-14 | 里珍纳龙药品有限公司 | Sterilization method |
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| CN200984336Y (en) * | 2006-12-15 | 2007-12-05 | 孟月东 | Hydrogen peroxide vacuum plasma body cold sterilization device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480019A (en) * | 2013-08-23 | 2014-01-01 | 苏州康华净化系统工程有限公司 | Ultraviolet ray disinfecting system |
| CN105288682A (en) * | 2014-07-31 | 2016-02-03 | 北京白象新技术有限公司 | Washer-disinfector with cloud service function |
| CN105311657A (en) * | 2014-07-31 | 2016-02-10 | 北京白象新技术有限公司 | High-temperature high-pressure sterilizer with cloud service function |
| CN105311667A (en) * | 2014-07-31 | 2016-02-10 | 北京白象新技术有限公司 | Low-temperature plasma sterilizer with cloud service function |
| CN105311658A (en) * | 2014-07-31 | 2016-02-10 | 北京白象新技术有限公司 | Air disinfecting machine with cloud service function |
| CN114617999A (en) * | 2017-03-27 | 2022-06-14 | 里珍纳龙药品有限公司 | Sterilization method |
| CN108686241A (en) * | 2017-04-10 | 2018-10-23 | 莎罗雅株式会社 | Sterilizing methods and bactericidal unit |
| CN108686241B (en) * | 2017-04-10 | 2021-03-26 | 山东新华医疗器械股份有限公司 | Sterilization method and sterilization apparatus |
| CN113209343A (en) * | 2021-04-19 | 2021-08-06 | 杭州优尼克消毒设备有限公司 | Ethylene oxide sterilizer compatible with mixed gas |
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| CN101810870B (en) | 2012-09-05 |
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Denomination of invention: Method and device for controlling precise measurement of hydrogen sulfide pulsation injecting liquid through pressure degenerative feedbacks Effective date of registration: 20130318 Granted publication date: 20120905 Pledgee: Industrial Commercial Bank of China Ltd Beijing Chaoyang sub branch Pledgor: Beijing Baixiang Science & Technology Co., Ltd. Registration number: 2013990000154 |
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