CN109963599B - Method for inactivating microorganisms in air and electric sterilizer - Google Patents
Method for inactivating microorganisms in air and electric sterilizer Download PDFInfo
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- CN109963599B CN109963599B CN201780071204.6A CN201780071204A CN109963599B CN 109963599 B CN109963599 B CN 109963599B CN 201780071204 A CN201780071204 A CN 201780071204A CN 109963599 B CN109963599 B CN 109963599B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/14—Plasma, i.e. ionised gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/22—Ionisation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/04—Plant or installations having external electricity supply dry type
- B03C3/14—Plant or installations having external electricity supply dry type characterised by the additional use of mechanical effects, e.g. gravity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention discloses a method for inactivating microorganisms in air, which comprises the following steps: passing air through a system of corona and ionizer electrodes located in the sterilization chamber magnetic field; a high voltage pulse of positive and negative polarity having an amplitude of 14 to 100kV, a duration of 2 to 200ms and a density of 1 to 100 is applied, and the voltage value can be set independently. An electric sterilizer consists of a housing and a sterilization chamber (2) in which a positive corona electrode and a negative corona electrode are arranged, which corona electrodes are connected to a high voltage pulse power supply. An insulating electrode is arranged between the positive corona electrode and the negative corona electrode, and the insulating electrode is made in the form of a dielectric body, and a plurality of metal grids are embedded on the insulating electrode. The ionizer electrode is mounted on the rearmost negative electrode in the air flow direction. At least four electromagnets are arranged in the sterilization chamber, and the power supply of the electromagnets is arranged outside the sterilization chamber shell and is synchronous with the electrode power supply. A turbine and injector for additional gas supply are installed before the sterilizer inlet.
Description
Technical Field
The invention belongs to the technical field of medical treatment, in particular to a method and an inactivation device for inactivating microorganisms in air, which can be used for air disinfection and air anion level increase in industries such as medical treatment, pharmacy, food, agriculture and the like and in personnel-intensive areas in daily life.
Background
There are a series of air purification and disinfection devices of simple or complex design. However, all known devices do not allow a complete purification of the air from a microbiological point of view.
Known in comparison are ZENET brand air purifiers (Internet resources: http./www.mobilluck.com.ua/brands/Zenct), which perform air purification mechanically and electrostatically, but in which there are no deactivating conditions.
The air purifier (internet resource: www.aircomfort.ru) of the air comfort brand is similar. Such purifiers use a nano-type cartridge, the filter or TRUNERA filter of which is a type of particle trap. The internal ionizer may increase the concentration of airborne negative ions in the initial air stream, but without deactivating conditions therein.
There is also known a device for gas sterilization and fine filtration (russian federal patent No. 2026751, v 03 c/14, published 1995) having a structure similar to that of ZENET brand and air comfort brand purifiers. However, it is different to have an ionization chamber. The patent does not give specific conditions for the operation of the ionization chamber, only mentions that a voltage of 10kV is required. At this value of voltage, it is not possible to create effective conditions for inactivation, regardless of the arrangement and form of the electrodes.
Another type of electric air sterilizer is known (ukrainian patent No. 101136, a61L2/03, a61L2/02, class B03C3/14, published in 2013), which has a casing, inside which are distributed an ionization chamber, an external electrode (ionizer), a power supply and a turbine. The ionization chamber is internally provided with a plurality of positive and negative corona electrodes which have different voltages, the voltage value is 12.5-100 kV, and a turbine is designed to pass through the ionization chamber for air supply.
The sterilizer forms bipolar corona discharge to ensure the inactivation of microbe, and the air ionization caused by higher voltage increases the concentration of negative ions in air, but the sterilizer has lower treating speed and higher power consumption.
The prototype selected air ionization and a bipolar ionizer (Russian Federal patent No. 2301377C 2, class F24F3/16, published in 2007).
The air ionization mode is as follows: the air is passed through a corona electrode system installed in the air channel, in which system there are alternating voltage pulses, the amplitude of two half-cycles of which is above a threshold value. The corona electrode system consists of two groups of same electrodes which are arranged side by side, different high-voltage pulses are generated according to the polarity and sent to the corona electrodes of different groups, and simultaneously the ion concentration and the unipolar coefficient of ions can be controlled by independently adjusting the duration of positive polarity pulse and negative polarity pulse.
The bipolar ionizer consists of a housing, several sets of corona electrodes connected to a high voltage power supply, an air channel and a turbine. The power supply is pulsed. Alternating voltage pulses are generated between the electrodes independently of each other. The pulse durations are independently variable. The pulse density is equal to 2.
However, this generator is only used for air ionization and for adjusting the concentration of positive and negative ions. It is not allowed to be used for inactivation of airborne microorganisms, wherein the necessary inactivation conditions are absent.
Disclosure of Invention
The basis of the invention is: by applying positive and negative polarity pulse voltages, the positive and negative electrodes can be independently set to voltage values and pulse durations to ensure that a pulsed bipolar corona discharge can be formed in the sterilizer and the electrode power supply synchronized to ensure complete inactivation of microorganisms in the air.
The presented solution enables a method for inactivating microorganisms in air, since the electrodes apply a pulsed voltage when the air passes through the electrode system, according to the invention the corona electrodes and the ionizer are located in a constant or alternating magnetic field in the sterilization chamber, they apply high voltage pulses of positive and negative polarity with amplitude of 14-100 kV, duration of 2-200 ms, density of 1-100, and the voltage value and pulse duration can be set independently, and the pulse duration can be determined according to the following formula:
t is S/V a, wherein
t-pulse duration, ms
S-length of sterilizing Chamber, m
V-speed of air passing through the sterilization chamber, m/s
Coefficient of alpha-magnetic interaction
The corona electrodes are connected to a synchronous power supply which allows a phase shift of at most 2 pi, the magnetic field is generated by the electromagnet whose power supply is synchronized with the electrode power supply and which is able to change the polarity of the power supply voltage of the electromagnet winding when the duration of the high voltage pulse is more than half.
According to the invention, if necessary, a gas having a composition is additionally fed into the sterilization chamber, which gas can be ionized and can ensure an increase in the ion concentration at the outlet.
The solution given also enables the realization of an electric sterilizer consisting of a casing and several groups of corona electrodes connected to a high-voltage pulse power supply, an air channel and a turbine, according to the invention, a sterilization chamber is used as the air channel, inside which are arranged a positive and a negative corona electrode, between which is arranged an insulated electrode made in the form of a dielectric body, on which are embedded a plurality of metal grids, an ionizer electrode is mounted on the rearmost negative electrode in the direction of the air flow, inside which is arranged at least four electromagnets for generating a constant or alternating magnetic field, the electromagnet power supply being arranged outside the casing of the sterilization chamber and synchronized with the electrode power supply, and before the inlet of the turbine is arranged an injector for injecting additional gas of a certain composition.
According to the invention, the electromagnets are made in the form of coils with ferromagnetic cores and are mounted in opposition on the opposite side of the sterilization chamber.
Applying high voltage pulses of positive and negative polarity with amplitude of 14-100 kV, duration of 2-200 ms, and density of 1-100, and setting voltage value and pulse duration independently, each electrode allowing increased impact ionization. The use of electromagnets and the synchronization of the power supply can further increase the probability of ionization. The operation of the sterilizer in the alternating magnetic field is doubled compared with the sterilization effect in the constant magnetic field. The arrangement of the insulated electrodes ensures stable operation of the sterilizer at the critical breakdown voltage value, and eliminates the occurrence of streamer processes to allow for increased electrode voltage and increased ionization energy.
In addition, the presented sterilizer allows to increase the concentration of ionized parts of a specific gas in the air for medical purposes.
Drawings
Fig. 1 schematically shows an electrical sterilizer.
Fig. 2 is a block diagram of the power and control of an electric sterilizer.
The electric sterilizer comprises a housing 1, a sterilization chamber 2, a tubular housing 3 and a turbine 4 attached at the end of the housing 1, which turbine can force air into the sterilization chamber 2. An injector 5 with a shut-off valve 6 is arranged in front of the turbine 4 for the additional supply of gas with a certain composition. In the housing 3 of the sterilization chamber 2 are arranged in order: a negative corona electrode module 7 in the form of an electrically connected metal grid, followed by an insulated electrode module 8 with a plurality of metal grids embedded in the dielectric body, followed by a positive corona electrode module 9 in the form of an electrically connected metal grid, followed by an insulated electrode module 8, and finally followed by a negative corona electrode module 7 electrically connected to an ionizer electrode 10. The area of the insulated electrode 8 in the housing 3 of the sterilization chamber 2 is provided with an electromagnet winding 11. The control unit 12, the negative corona electrode power supply 13, the positive corona electrode power supply 14, the electromagnet power supply 15, the regulating unit 16 and the display unit 17 all have separate housings. The power supplies 13, 14 and 15, the adjusting unit 16 and the display unit 17 are connected to the control unit 12.
Detailed Description
The operating principle of the sterilizer is as follows.
The turbine 4 forces air into the sterilization chamber 2, the air flow passes through the sterilization chamber under the action of the electric field, the electric field is generated by the corona electrodes 7 and 9, the power sources 13 and 14 act on the electric field to generate high-voltage pulses with positive and negative polarities, the amplitude of the high-voltage pulses is 14-100 kV, the duration of the high-voltage pulses is 2-200 ms, the density of the high-voltage pulses is 1-100, the voltage value and the pulse duration can be independently set, and the pulse duration can be determined according to the following formula:
t is S/V a, wherein
t-pulse duration, ms
S-length of sterilizing Chamber, m
V-speed of air passing through the sterilization chamber, m/s
The coefficient of a-magnetic interaction.
Sterile air escapes from the sterilization chamber 2. The electrodes 10 of the ionizer increase the concentration of negative air ions in the initial air stream.
The injector 5 has the opportunity to inject other gases into the mixed gas. Corona gas discharge current is the main inactivation factor of sterilizers. When a voltage is applied to the corona electrodes 7 and 9 in the form of a u-shaped pulse, a pulse current flows in the space between the electrodes. The front of the current u-shaped pulse is close to 90 deg.. The pulsed voltage applied to the corona electrodes 7 and 9 increases the impact ionization effect. The current in the charge transfer zone, i.e. the current into the inter-electrode space, is increased almost ten times compared to the current generated by the constant voltage counter-electrode, and therefore the inactivation speed and inactivation effect of the microorganisms is increased.
The voltage of the negative corona electrode 13 is synchronized with the power supply of the positive corona electrode 14 by a control unit 12, which is arranged at the controller "ATmega 238 p" with the possibility of a phase shift by 2 pi. When the phase shift is equal to "0", the voltage between the corona electrodes 7 and 9 is maximum. The discharge pulse duration is equal to the voltage pulse duration. The ionization energy is at a maximum at this time.
When the phase shift differs from "0", the voltage on one of the corona electrodes disappears during this phase shift value period. The current value at this moment depends on the voltage on the corona electrodes, which is always less than the current with a phase shift equal to "0", and the corresponding ionization energy is also less than the maximum value. The ionization energy is minimal when the phase shift is equal to 2 pi.
The variation in ionization energy is necessary to select ions of certain gases in the initial gas flow of the electric sterilizer. The density changes when the phase shift is adjusted.
By further injecting a specific gas into the sterilization chamber 2 through the injector 5, the ion concentration of the gas is also increased.
Increasing the gas ions in the initial air flow of the sterilizer can enable physical therapy for medical purposes.
In order to reach the maximum possible value of the ionization energy in the sterilizer, a high voltage is used, the voltage value of which reaches the critical breakdown voltage value. At this voltage level, a plasma jet is formed in the space between the electrodes, which reduces the deactivation effect of the sterilizer. In order to eliminate this phenomenon and to increase the electrical strength of the inter-electrode gap between the positive and negative electrodes, an insulated electrode module 8 is provided, the base of which is made of an insulating material, and at least two parallel grids and discharge electrodes 7 and 9 are built in the chamber.
The ionizer electrode 10 is directly placed on the negative corona electrode 7 along the moving direction of the air flow, so that the negative ions in the air are 8-10 times of the initial air flow of the sterilizer.
If the room is sterilized, the organic and inorganic particles in the cleaned room air are ionized and settle on the floor and walls because they are positive with respect to the last negative corona electrode 7 of the sterilizer. The sterility of the room can be further improved by using wet purification.
The magnetic field generated by the electromagnet 11 in the sterilization chamber 2 of the sterilizer changes the trajectory of the ionizing part, which increases the probability of ionization. When the number of flux values is changed, the inactivation conditions are changed. Increasing the magnitude of the magnetic flux can shorten the duration of the electrical pulse delivered to the corona electrode. Empirical equations for pulse duration and flux values are established. To calculate the pulse duration, the coefficient "a" of the magnetic interaction is introduced into the calculation formula of the pulse. It depends on the magnetic flux value "B" (arbitrary standard unit), as shown (FIG. 3).
This further increases the inactivation efficiency of the sterilizer.
The control unit 12 synchronizes the electromagnet 15 power supply with the positive corona electrode 13 and the negative corona electrode 14 power supply. When the pulse duration of the negative corona electrode 7 is over half, the polarity of the power supply of the electromagnet 11 changes. This further increases the ionization probability.
Parameter settings (power supply voltage value, pulse duration value, and density value) are performed using the adjusting unit 16, and the parameters are displayed by the display unit 17.
INDUSTRIAL APPLICABILITY
One example of this approach.
Air collection was performed using a Krotova device to determine the effectiveness of this method for the inactivation of microorganisms in the air. In a 150 cubic meter room, 150 people are periodically gathered for 5 hours. Samples were taken and it was determined that there were 250 colonies formed by different microorganisms in the petri dish. The air in the petri dish was treated using the given electric sterilizer, and 10 colonies were found after 10 minutes, 4 colonies after 20 minutes, and 0 colony after 30 minutes. The negative pulse duration at density 1.2 was 125 ms. The positive pulse duration at density 1.5 is 100 ms. The amplitude of the negative pulse was 38kV and the amplitude of the positive pulse was 32 kV.
Claims (4)
1. A method for inactivating microorganisms in air, comprising passing the air through an electrode system for applying a pulse voltage, characterized in that a corona electrode and an ionizer electrode are located in a constant or alternating magnetic field in a sterilization chamber, they apply high voltage pulses of positive and negative polarity having an amplitude of 14 to 100kV, a duration of 2 to 200ms, and a density of 1 to 100, and the voltage value and the pulse duration can be independently set, and the pulse duration can be determined according to the following formula:
t is S/V a, wherein
t-pulse duration, ms
S-length of sterilizing Chamber, m
V-speed of air passing through the sterilization chamber, m/s
The coefficient of the a-magnetic interaction,
the corona electrodes are connected to a synchronous power supply which allows a phase shift of at most 2 pi, the magnetic field is generated by an electromagnet whose power supply is synchronized with the electrode power supply and which changes the polarity of the electromagnet winding supply voltage when the high voltage pulse duration is more than half.
2. An electric sterilizer is composed of casing, corona electrodes connected to high-voltage pulse power supply, air channel and turbine, and features that the sterilizing chamber is used as air channel, positive and negative corona electrodes are arranged in the sterilizing chamber, an insulating electrode is arranged between said positive and negative corona electrodes, and is made up of dielectric body with more than one metallic meshes embedded in it, and the ionizing electrode is installed to the back negative electrode in airflow direction.
3. An electric steriliser according to claim 2, wherein the electromagnet is in the form of a coil having a ferromagnetic core.
4. An electric steriliser according to claim 2, wherein the electromagnets are mounted in opposition to opposite sides of the sterilisation chamber.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| UAA201612492A UA114067C2 (en) | 2016-12-08 | 2016-12-08 | METHOD OF INACTIVATION OF MICRO-ORGANISMS IN AIR AND ELECTRICAL Sterilizer |
| UAA201612492 | 2016-12-08 | ||
| PCT/UA2017/000061 WO2018106208A1 (en) | 2016-12-08 | 2017-05-31 | Method for inactivating microorganisms in the air and electrical sterilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109963599A CN109963599A (en) | 2019-07-02 |
| CN109963599B true CN109963599B (en) | 2021-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780071204.6A Active CN109963599B (en) | 2016-12-08 | 2017-05-31 | Method for inactivating microorganisms in air and electric sterilizer |
Country Status (6)
| Country | Link |
|---|---|
| CN (1) | CN109963599B (en) |
| DE (1) | DE112017003355T5 (en) |
| PL (1) | PL238815B1 (en) |
| RU (1) | RU2731964C1 (en) |
| UA (1) | UA114067C2 (en) |
| WO (1) | WO2018106208A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111166925A (en) * | 2020-03-06 | 2020-05-19 | 深圳国创名厨商用设备制造有限公司 | Magnetoelectric induction air disinfection equipment |
| CN113124526A (en) * | 2021-05-19 | 2021-07-16 | 深圳智鲨物联科技有限公司 | Fresh air sterilization treatment device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4547129A (en) * | 1983-05-13 | 1985-10-15 | Keiko Endo | Air stream generating apparatus |
| CN2176986Y (en) * | 1993-07-20 | 1994-09-14 | 王波军 | Constant temperature constant pressure sterilizing and preserving box or cabinet |
| CN101292769A (en) * | 2008-06-05 | 2008-10-29 | 清华大学深圳研究生院 | Method and apparatus for materials cooperation disinfection and enzyme dulling with impulse electric field and magnetic field |
| WO2014092668A1 (en) * | 2012-12-13 | 2014-06-19 | Shevkis Valentyn Zihmundovych | Electric air sterilizer |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE456204B (en) * | 1987-02-05 | 1988-09-12 | Astra Vent Ab | DEVICE FOR TRANSPORTATION OF AIR WITH THE USE OF ELECTRIC ION WIND |
| RU2026751C1 (en) | 1992-05-13 | 1995-01-20 | Елена Владимировна Володина | Device for sterilization and fine gas filtration |
| RU1629U1 (en) * | 1994-07-18 | 1996-02-16 | Российский институт профилактической медицины | AIR CLEANING DEVICE |
| DE19648182A1 (en) * | 1996-11-21 | 1998-05-28 | Abb Research Ltd | Corona electrode for a filter arrangement for separating contaminants from a gas stream, filter arrangement with corresponding corona electrodes and method for their operation |
| FR2839242B1 (en) * | 2002-04-25 | 2004-10-15 | Rasar Holding N V | METHOD FOR GENERATING COLD PLASMA FOR STERILIZATION OF GASEOUS MEDIA AND DEVICE FOR CARRYING OUT SAID METHOD |
| RU2301377C2 (en) * | 2005-07-15 | 2007-06-20 | Виктор Павлович Реута | Method of ionizing air and bipolar ion generator |
| RU2329836C1 (en) * | 2006-11-14 | 2008-07-27 | Московский государственный университет леса | Air ioniser |
| RU2598098C2 (en) * | 2008-04-29 | 2016-09-20 | Закрытое Акционерное Общество "Техмаш" | Air ioniser |
| KR100957771B1 (en) * | 2009-10-16 | 2010-05-12 | 운해이엔씨(주) | Purification and sterilization apparatus for indoor use |
| RU2541004C1 (en) * | 2013-11-27 | 2015-02-10 | Александр Владимирович Наголкин | Method of decontaminating air and apparatus therefor |
| CN105396692B (en) * | 2014-09-16 | 2017-05-24 | 孙红梅 | Air purifier having rotation corona electrode |
| RU2598387C1 (en) * | 2015-08-11 | 2016-09-27 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский национальный исследовательский технический университет им. А.Н. Туполева - КАИ" | System for monitoring and controlling medical-biological parameters of air in dental installation |
-
2016
- 2016-12-08 UA UAA201612492A patent/UA114067C2/en unknown
-
2017
- 2017-05-31 DE DE112017003355.1T patent/DE112017003355T5/en active Granted
- 2017-05-31 RU RU2018134861A patent/RU2731964C1/en active
- 2017-05-31 PL PL427894A patent/PL238815B1/en unknown
- 2017-05-31 WO PCT/UA2017/000061 patent/WO2018106208A1/en active Application Filing
- 2017-05-31 CN CN201780071204.6A patent/CN109963599B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4547129A (en) * | 1983-05-13 | 1985-10-15 | Keiko Endo | Air stream generating apparatus |
| CN2176986Y (en) * | 1993-07-20 | 1994-09-14 | 王波军 | Constant temperature constant pressure sterilizing and preserving box or cabinet |
| CN101292769A (en) * | 2008-06-05 | 2008-10-29 | 清华大学深圳研究生院 | Method and apparatus for materials cooperation disinfection and enzyme dulling with impulse electric field and magnetic field |
| WO2014092668A1 (en) * | 2012-12-13 | 2014-06-19 | Shevkis Valentyn Zihmundovych | Electric air sterilizer |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112017003355T5 (en) | 2019-03-21 |
| PL427894A1 (en) | 2019-10-21 |
| WO2018106208A1 (en) | 2018-06-14 |
| UA114067C2 (en) | 2017-04-10 |
| CN109963599A (en) | 2019-07-02 |
| RU2731964C1 (en) | 2020-09-09 |
| PL238815B1 (en) | 2021-10-11 |
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