WO2020166960A1 - Purificateur d'air à plasma dbd et dispositif de réduction de gaz d'échappement - Google Patents

Purificateur d'air à plasma dbd et dispositif de réduction de gaz d'échappement Download PDF

Info

Publication number
WO2020166960A1
WO2020166960A1 PCT/KR2020/001960 KR2020001960W WO2020166960A1 WO 2020166960 A1 WO2020166960 A1 WO 2020166960A1 KR 2020001960 W KR2020001960 W KR 2020001960W WO 2020166960 A1 WO2020166960 A1 WO 2020166960A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
electrode
electric field
current
supply unit
Prior art date
Application number
PCT/KR2020/001960
Other languages
English (en)
Korean (ko)
Inventor
박영민
노정욱
Original Assignee
주식회사 가교테크
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 가교테크 filed Critical 주식회사 가교테크
Publication of WO2020166960A1 publication Critical patent/WO2020166960A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/027—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means
    • F01N3/0275—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means using electric discharge means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/2406—Generating plasma using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/2406—Generating plasma using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes
    • H05H1/2418—Generating plasma using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes the electrodes being embedded in the dielectric
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/2406—Generating plasma using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes
    • H05H1/2431—Generating plasma using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes using cylindrical electrodes, e.g. rotary drums
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/28—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a plasma reactor

Definitions

  • the present invention relates to an air purifier using plasma technology.
  • Air pollution is caused by particulate matter (PM) suspended in the air, and these particulate pollutants are mostly generated from combustors used in industrial activities and transportation.
  • PM particulate matter
  • Contaminant removal technology using plasma is a harmful gas treatment technology using low-temperature plasma, a harmful gas treatment technology using a dielectric barrier discharge (DBD) plasma, and a rotating gliding arc plasma.
  • DBD dielectric barrier discharge
  • An object of the present invention is to provide a smoke reduction apparatus and an air purifier using DBD plasma.
  • the present invention is to provide an air purifier using DBD plasma and a driving method thereof, which can further improve exhaust emission reduction efficiency than a method using a conventional DBD plasma.
  • the present invention provides an air purifier using DBD plasma and a driving method thereof, which can reduce power consumption and improve exhaust emission reduction efficiency compared to a method using a conventional DBD plasma.
  • the DBD plasma air purifier which is electrically connected to a voltage supply unit supplying an AC voltage and a current supply unit supplying current, is formed to extend in one direction, and is electrically connected to the first electrode of the voltage supply unit.
  • a dielectric portion disposed in the; And a second electric field different from the first electric field by the current supplied from the current supply unit is formed in the hollow portion.
  • a current having a moving direction of charge opposite to a moving direction of charge formed by the AC voltage is characterized by being formed with a specific period.
  • the direction of the second electric field Is characterized in that corresponding to the first direction of the first electric field.
  • the current supplied from the current supply unit is a direct current, and in the second electric field having a direction corresponding to the first direction, a positive voltage is applied to the first electrode unit and the second electrode unit Or when a negative voltage is applied to the first and second electrode portions, it is formed only in one case.
  • the second electrode portion has one end and the other end, and the intensity of the second electric field is in a region corresponding to the one end and the other end than in a central region of the hollow portion provided in the second electrode. It is characterized by being stronger.
  • a DBD plasma air purifier electrically connected to a voltage supply unit supplying an AC voltage having a preset period is formed to extend in one direction, and is electrically connected to the first electrode of the voltage supply unit.
  • a control unit for controlling the AC voltage supplied from the voltage supply unit such that AC voltages having different voltage levels are applied to the first and second electrode units within the preset period, wherein the electric field of the hollow portion, Based on the AC voltage having the different voltage levels, it is characterized in that it is varied to have different strengths within the preset period.
  • a first AC voltage having a first voltage level is supplied to the first and second electrode units during a first period within the preset period, and to the first and second electrode units, the A second AC voltage having a second voltage level lower than the first voltage level is supplied during a second period different from the first period within a preset period.
  • a first electric field is formed, and based on the second AC voltage being supplied, a second electric field having a different strength than the first electric field 2 It is characterized in that an electric field is formed.
  • the first and second electric fields are characterized in that they have directions corresponding to each other.
  • the AC voltage is characterized in that it includes a first pulse wave having the first voltage level during the first period and a second pulse wave having the second voltage level during the second period. .
  • the alternating current voltages having different voltage levels are repeatedly supplied alternately, and changes in the electric field of the hollow portion converge in a constant pattern.
  • the second electrode portion has one end and the other end, and the intensity of the second electric field is in a region corresponding to the one end and the other end than in a central region of the hollow portion provided in the second electrode. It is characterized by being stronger.
  • an electric field capable of increasing the soot reduction efficiency can be additionally formed by supplying additional current to the electrode.
  • the intensity of the electric field can be varied to increase the soot reduction efficiency.
  • FIG. 1 and 2 are conceptual diagrams illustrating an apparatus for reducing DBD plasma smoke according to the present invention.
  • FIG. 3 is a conceptual diagram illustrating a voltage supply method of the DBD plasma exhaust emission reduction apparatus according to the present invention.
  • 4A, 4B and 4C are conceptual diagrams for explaining a current supply method of the DBD plasma exhaust emission reduction apparatus according to the present invention.
  • 5A, 5B, 5C, 5D, 6A, 6B, 6C, and 6D are conceptual diagrams for explaining an electric field formed in the DBD plasma exhaust emission reduction apparatus according to the present invention.
  • 7, 8, 9 and 10 are conceptual diagrams for explaining a DBD plasma exhaust emission reduction apparatus according to another example of the present invention.
  • FIG. 11 is a conceptual diagram illustrating an electric field formed in a DBD plasma exhaust emission reduction apparatus according to another example of the present invention.
  • the present invention provides a soot reduction device and a driving method of the soot reduction device using DBD plasma, which can further improve the soot reduction efficiency than the method using the conventional DBD plasma.
  • DBD plasma exhaust emission reduction device according to this will be described in more detail.
  • FIG. 1 and 2 are conceptual diagrams for explaining the DBD plasma smoke reduction apparatus according to the present invention
  • FIG. 3 is a conceptual diagram for explaining a voltage supply method of the DBD plasma smoke reduction apparatus according to the present invention.
  • Figures 4a, 4b and 4c are conceptual diagrams for explaining a current supply method of the DBD plasma exhaust emission reduction apparatus according to the present invention.
  • the DBD plasma smoke reduction apparatus 100 includes a harmful gas passing through the DBD plasma smoke reduction apparatus 100 through a dielectric barrier discharge (DBD). Gas) is characterized in that the purified gas (or clean gas) is discharged by ionizing.
  • the DBD plasma smoke reduction apparatus 100 according to the present invention converts contaminants such as NOx and SOx into safe materials by ionizing them using ionic molecules generated due to dielectric barrier discharge. .
  • the dielectric barrier discharge causes plasma chemistry in which a chemical reaction starts when electrons collide with gas molecules around it, and at this time, the plasma chemistry is electron It depends on the size of the electric field that supplies kinetic energy to the children.
  • the present invention proposes a DBD plasma exhaust emission reduction apparatus capable of increasing the intensity of an electric field within a limited voltage.
  • the exhaust gas reduction device proposed in the present specification may be an exhaust gas treatment device such as a vehicle or a ship, an air purifier or a ventilation device used for home or industrial use.
  • the smoke reduction apparatus may have a single DBD plasma reactor, or may have a structure in which a plurality of DBD plasma reactors are disposed in bundles.
  • a single DBD plasma reactor is exemplified as an exhaust emission reduction device.
  • the DBD plasma smoke reduction apparatus 100 is configured to be electrically connected to the voltage supply unit 210 and the current supply unit 220.
  • At least one of the voltage supply unit 210 and the current supply unit 220 may be provided separately from the DBD plasma emission reduction apparatus 100 according to the present invention.
  • At least one of the voltage supply unit 210 and the current supply unit 220 may be provided together with the DBD plasma exhaust emission reduction apparatus 100 according to the present invention.
  • the DBD plasma smoke reduction apparatus 100 may further include at least one of the voltage supply unit 210 and the current supply unit 220 as a component.
  • the voltage supply unit 210 and the current supply unit 220 are provided separately or together with the DBD plasma emission reduction apparatus 100 without any particular limitation, and will be described in common.
  • the DBD plasma emission reduction apparatus 100 includes a first electrode unit 110, a second electrode unit 120, and a dielectric unit 130.
  • the first electrode unit 110 is formed to extend in one direction, as illustrated, and is configured to be electrically connected to the first electrode 210a of the voltage supply unit 210.
  • the first electrode unit 110 may have various shapes, and as an example, it may be formed in a cylindrical shape as illustrated. Meanwhile, although not shown, the first electrode unit 110 may include a plurality of sub-electrodes, and these sub-electrodes may be formed to extend in the one direction in which the first electrode unit 110 extends. have. Such a plurality of sub-electrodes may also have various shapes, and as an example, may be formed in a cylindrical shape.
  • the second electrode unit 120 includes a hollow portion in which the first electrode unit 110 is disposed, and is configured to be electrically connected to the second electrode 210b of the voltage supply unit.
  • the second electrode unit 120 may have various shapes including a hollow portion, and as an example, may have a cylindrical shape as shown in the figure.
  • the second electrode unit 120 is also formed to extend in the one direction.
  • a dielectric portion 130 is disposed between the first electrode portion 110 and the second electrode portion 120. Dielectric barrier discharge is generated based on the application of voltage and current to the first and second electrode units 110 and 120 by the dielectric unit 130.
  • the dielectric part 130 may be disposed on one surface of the second electrode part 120, and the one surface may be a surface facing the first electrode part 110.
  • the dielectric unit 130 When the voltage is supplied from the voltage supply unit 210 to the first electrode unit 110 and the second electrode unit 120, the dielectric unit 130 causes a first direction having a first direction in the hollow part. An electric field is formed.
  • a second electric field different from the first electric field may be formed in the hollow portion of the second electrode unit 220 by the current supplied from the current supply unit 220.
  • the voltage supplied from the voltage supply unit 210 to the DBD plasma smoke reduction apparatus 100 according to the present invention is made of an AC voltage.
  • the voltage supply unit 210 is configured to supply an AC voltage, has a preset period, and is configured to repeatedly supply a positive voltage and a negative voltage to the first and second electrode units 110 and 120.
  • the direction of movement of electric charges moves from the first electrode unit 110 to the second electrode unit 120, and the first electrode unit A radial electric field radiated toward the second electrode unit 120 at 110 may be formed.
  • the method of supplying the AC voltage from the voltage supply unit 210 may be very various, and the voltage supply unit 210 is from a DC voltage (DC voltage), an AC voltage (AC voltage) ) May include a circuit that generates. As an example, as shown in (a) of FIG. 3, the voltage supply unit 210 may supply an AC voltage to the DBD plasma smoke reduction apparatus 100 in a full bride method.
  • the voltage supply unit 210 is a half-bridge method, supplying an AC voltage to the DBD plasma soot reduction device 100, or also shown in Figure 3 (c) As described above, the voltage supply unit 210 may supply an AC voltage to the DBD plasma emission reduction apparatus 100 in a two-switch Flayback method.
  • the voltage supply unit 210 may supply an AC voltage to the DBD plasma smoke reduction apparatus 100 in a One-Switch Flyback method.
  • Regions corresponding to 310, 320, 330, and 340, respectively, in FIGS. 3A to 3D show that the DBD plasma emission reduction apparatus 100 according to the present invention is connected as a load.
  • the current supply unit 220 may be configured to supply an alternating current or a direct current.
  • the method of supplying the AC current from the current supply unit 220 is a direct current (DC current), as shown in (a) and (b) of Fig. 4a. ), it may include a circuit that generates an alternating current (AC current).
  • DC current direct current
  • AC current alternating current
  • regions corresponding to 410 and 420, respectively, are shown as loads to which the DBD plasma smoke reduction apparatus 100 according to the present invention is connected.
  • the current supplied from the current supply unit 220 may be an AC current having a preset period.
  • the AC voltage supplied through the voltage supply unit 210 is supplied with a first cycle
  • the AC current supplied through the current supply unit 220 has a second cycle and may be supplied.
  • the first period and the second period may be the same period or may be different periods.
  • the current supply unit 220 may also be configured to supply a DC current.
  • the current supply unit 220 may be configured to supply a direct current, and in the present invention, regardless of the alternating current and the direct current, the first electric field generated by the AC voltage supplied from the voltage supply unit 210 2 is made to form an electric field.
  • FIGS. 5B, 5C, and 5D are plan views as viewed from the direction A-A′ of the DBD plasma exhaust emission reduction apparatus according to the present invention.
  • the voltage supplied from the voltage supply unit 210 is formed of an AC voltage. That is, the voltage supply unit 210 is configured to supply an AC voltage, has a preset period, and is configured to repeatedly supply a positive voltage and a negative voltage to the first and second electrode units 110 and 120.
  • the first electric field generated by the voltage supply unit 210 is when a positive voltage 510 (refer to FIG. 5B) is supplied from the voltage supply unit 210 and a negative voltage 520 (refer to FIG. 5B) is supplied. When they have opposite directions.
  • the first electrode 210a of the voltage supply unit 210 is a positive electrode and a second electrode 210b.
  • the first electrode unit 110 2 A potential difference to the electrode unit 120 occurs. That is, the electric potential of the first electrode unit 110 is higher than the electric potential of the second electrode unit 120, and thus, the moving direction of the electric charge moves from the first electrode unit 110 to the second electrode unit 120. .
  • a radial electric field radiated from the first electrode unit 110 toward the second electrode unit 120 may be formed.
  • the electric field formed by the voltage supply unit 210 may be referred to as the first electric field E1.
  • the first electric field E1 has one direction from the first electrode unit 110 to the second electrode unit 120 in the x-y plane, and forms a radial shape.
  • a current supply unit (in the direction B-B′) flows through the second electrode unit 120 220) can be supplied with current.
  • a current flowing through the second electrode unit 120 by the voltage supply unit 210 may be formed in a first direction corresponding to C-C′.
  • the C-C' direction will be referred to as a "first direction” and the B-B' direction will be referred to as a "second direction”.
  • the current is supplied to the second electrode unit 120 in a second direction (B-B') opposite to the first direction (C-C').
  • a second electric field E2 corresponding to a direction corresponding to the direction of the first electric field E1 is formed.
  • That it corresponds to the direction of the first electric field E1 may mean the same direction as the direction of the first electric field E1.
  • a current having a movement direction (or a current flow direction, B-B′) opposite to that of the current may flow with a specific period.
  • 5C shows a case where the AC current by the current supply unit 220 flows in the B-B direction.
  • a magnetic field B may be formed in a counterclockwise direction as shown in FIG. 5C.
  • a current is formed in the second direction B-B'.
  • the second electrode unit 120 has one end and the other end, and the strength of the second electric field E2 formed by the current supply unit 220 is It may be formed stronger in the regions (openings, 140, 150) corresponding to the one end and the other end than in the central region of the hollow part.
  • the AC voltage supplied through the voltage supply unit 210 may be supplied at a first period, and the AC current supplied through the current supply unit 220 may be supplied at a second period.
  • the first period and the second period are the same period, ideally, the direction of the electric field formed by the voltage supply unit 210 and the direction of the electric field formed by the current supply unit 220 may be identical. .
  • a second period having the same direction as the first electric field E1 In the electric field E2 a positive voltage is applied from the voltage supply unit 210 to the first and second electrode units 110 and 120, and the second direction (B-B') as previously described by the current supply unit 220 Can be formed while current flows.
  • the DBD plasma smoke reduction apparatus 100 includes a first electric field E1 and a current formed based on receiving a voltage from the voltage supply unit 210, as shown in FIG. 5D. Since the second electric field E2, which is formed based on receiving current from the supply unit 220, is formed together, the intensity of the electric field can be formed larger than that of the conventional DBD plasma exhaust emission reduction apparatus. Therefore, as the intensity of the electric field increases, chemical reactions with gas molecules corresponding to pollutants may occur more easily.
  • the voltage supplied from the voltage supply unit 210 is made of an AC voltage. That is, the voltage supply unit 210 is configured to supply an AC voltage, has a preset period, and is configured to repeatedly supply a positive voltage and a negative voltage to the first and second electrode units 110 and 120.
  • the first electric field generated by the voltage supply unit 210 is when a positive voltage 510 (see FIGS. 5B and 6B) is supplied from the voltage supply unit 210 and a negative voltage 520 (see FIG. 5B). When supplied, they have opposite directions.
  • the first electrode 210a is a negative electrode and a second electrode (210b) forms a positive electrode.
  • the second electrode unit 120 1 A potential difference to the electrode part 110 occurs. That is, the potential of the second electrode unit 120 is higher than the potential of the first electrode unit 110, and thus, the direction of movement of the charge moves from the second electrode unit 120 to the first electrode unit 110 .
  • a radial electric field E1' radiated from the second electrode unit 120 toward the first electrode unit 110 may be formed.
  • the electric field formed by the voltage supply unit 210 may be referred to as a first electric field E1'.
  • the first electric field E1 ′ has one direction from the second electrode unit 120 to the first electrode unit 110 in the x-y plane, and forms a radial shape.
  • a current is applied to the second electrode unit 120 in the first direction (C-C′ direction). Current may be supplied from the current supply unit 220 to flow.
  • a current flowing through the second electrode unit 120 by the voltage supply unit 210 may be formed in a second direction corresponding to B-B′.
  • current is supplied to the second electrode unit 120 in a first direction (C-C') opposite to the second direction (B-B') using the current supply unit 220.
  • a second electric field E2' corresponding to a direction corresponding to the direction of the first electric field E1' is formed.
  • that it corresponds to the direction of the first electric field E1 ′ may mean that it is the same direction as the direction of the first electric field E1 ′.
  • the movement direction of the electric charge formed by the AC voltage (or the flow direction of the current, the second direction, B -B'), a current having a moving direction (or a current flow direction, a first direction, C-C') opposite to that of the current may flow with a specific period.
  • 6C shows a case in which the AC current by the current supply unit 220 flows in the C-C' direction (first direction).
  • a magnetic field B' may be formed in a clockwise direction as shown in FIG. 6C.
  • a current is formed in a first direction C-C'.
  • the second electrode unit 120 has one end and the other end, and the strength of the second electric field E2' formed by the current supply unit 220 is provided in the second electrode unit 120. It may be formed stronger in the regions 140 and 150 corresponding to the one end and the other end than in the central region of the hollow part.
  • the AC voltage supplied through the voltage supply unit 210 may be supplied at a first period, and the AC current supplied through the current supply unit 220 may be supplied at a second period.
  • the first period and the second period are the same period, ideally, the direction of the electric field formed by the voltage supply unit 210 and the direction of the electric field formed by the current supply unit 220 may be identical. .
  • a second period having the same direction as the first electric field E1 In the electric field E2 negative voltages are applied to the first and second electrode units 110 and 120 from the voltage supply unit 210, and the first direction (C-C′) as previously described by the current supply unit 220 Can be formed while current flows.
  • the DBD plasma smoke reduction apparatus 100 includes a first electric field E1' formed based on receiving a voltage from the voltage supply unit 210, as shown in FIG. 6D. Since the second electric field E2 ′, which is formed based on receiving current from the current supply unit 220, is formed together, the strength of the electric field can be formed larger than that of a conventional DBD plasma smoke reduction device. Therefore, as the intensity of the electric field increases, chemical reactions with gas molecules corresponding to pollutants may occur more easily.
  • the current supply unit 220 may also supply a DC current.
  • the additional second electric fields E2 and E2' may be generated only from one of a positive voltage and a negative voltage supplied from the voltage supply unit 210.
  • the current supplied from the current supply unit 220 is a direct current
  • a second electric field having a direction corresponding to the first direction of the first electric field formed by the voltage supplied from the voltage supply unit 210 is , A positive voltage is applied to the first electrode part and the second electrode part, or a negative voltage is applied to the first and second electrode parts.
  • the DBD plasma reduction apparatus may increase the soot reduction efficiency by additionally forming an electric field by adding a current source. Therefore, the DBD plasma reduction apparatus according to the present invention can be applied to transportation means such as vehicles and ships, and further, it can be applied to various industrial fields such as air purifiers and water quality improvement devices.
  • a method of increasing the efficiency of the soot reduction device by additionally supplying current has been described.
  • a method of increasing the efficiency of a soot reduction device is proposed by controlling the voltage, and in particular, soot reduction using DBD plasma that can reduce power consumption and improve soot reduction efficiency. It provides an apparatus and a method of driving a smoke reduction apparatus.
  • a method of increasing the efficiency of the exhaust emission reduction device with low power will be described in more detail.
  • 7, 8, 9, and 10 are conceptual diagrams for explaining a DBD plasma smoke reduction apparatus according to another example of the present invention
  • FIG. 11 is an electric field formed in a DBD plasma smoke reduction apparatus according to another example of the present invention. It is a conceptual diagram for explaining.
  • the DBD plasma smoke reduction apparatus 700 As shown in FIG. 7, the DBD plasma smoke reduction apparatus 700 according to the present invention is made to be electrically connected to the voltage supply unit 810.
  • the voltage supply unit 800 may be provided separately from the DBD plasma smoke reduction apparatus 100 according to the present invention. Alternatively, the voltage supply unit 800 may be provided together with the DBD plasma emission reduction apparatus 700 according to the present invention.
  • the DBD plasma emission reduction apparatus 700 may further include a voltage supply unit 800 as a component.
  • the voltage supply unit 800 is provided separately or together with the DBD plasma emission reduction apparatus 100 without any particular limitation, and a common description will be given.
  • the DBD plasma emission reduction apparatus 700 includes a first electrode part 710, a second electrode part 720, and a dielectric part 730.
  • the first electrode unit 710 is formed to extend in one direction, as shown in the figure, and is configured to be electrically connected to the first electrode 801a of the voltage supply unit 800.
  • the first electrode part 710 may have various shapes, and as an example, it may be formed in a cylindrical shape as shown in the figure. Meanwhile, although not shown, the first electrode unit 710 may include a plurality of sub-electrodes, and these sub-electrodes may be formed to extend in the one direction in which the first electrode unit 710 extends. have. Such a plurality of sub-electrodes may also have various shapes, and as an example, may be formed in a cylindrical shape.
  • the second electrode part 720 includes a hollow part in which the first electrode part 710 is disposed, and is configured to be electrically connected to the second electrode 801b of the voltage supply part.
  • the second electrode part 720 may have various shapes including a hollow part, and as an example, may have a cylindrical shape as shown in the figure.
  • the second electrode part 720 is also formed to extend in the one direction.
  • a dielectric portion 730 is disposed between the first electrode portion 710 and the second electrode portion 720.
  • Dielectric barrier discharge is generated based on the application of voltage and current to the first and second electrode portions 710 and 720 by the dielectric portion 730.
  • the dielectric part 730 may be disposed on one surface of the second electrode part 720, and the one surface may be a surface facing the first electrode part 710.
  • the voltage supplied from the voltage supply unit 800 is made of an AC voltage.
  • the voltage supply unit 800 is configured to supply an AC voltage, has a preset period, and is configured to repeatedly supply a positive voltage and a negative voltage to the first and second electrode units 710 and 720.
  • the voltage supply unit 800 is configured to output AC voltages having different voltage levels within the preset period.
  • AC voltages having different voltage levels are applied to the first and second electrode units 710 and 720 within the preset period.
  • the voltage level supplied from the voltage supply unit 800 may be controlled by the controller 830 (see FIG. 8 ).
  • control unit 830 controls the AC voltage supplied from the voltage supply unit so that AC voltages having different voltage levels are applied to the first and second electrode units 710 and 720 within the preset period. I can.
  • the electric field of the hollow portion of the second electrode part 720 is varied to have different strengths within the preset period based on the AC voltages having different voltage levels.
  • the electric field formed in the hollow portion is formed in a radial shape, and when a positive voltage is supplied to the first and second electrode portions 710 and 720, the first electrode portion 110 to the second electrode portion 120 A radial electric field radiating toward the can be formed.
  • a radial electric field radiated from the second electrode portion 720 toward the second electrode portion 710 may be formed.
  • the voltage supply unit 800 includes a variable DC power supply 810, an AC voltage generation unit (Voltage-fed Driver 820), a control unit 830 and Vlink It may be configured to include 840.
  • the variable DC power supply 810 may be of various types, and the variable DC power supply 810 includes a first DC voltage V1 having a first voltage level and a second voltage level among different voltage levels. 2 It is made to output the DC voltage (V2) repeatedly at a preset period.
  • the first and second DC voltages V1 and V2 output from the DC power supply 810 are charged in the Vlink 840 terminal, as shown in FIG. 10A. Then, the DC voltage charged in the Vlink 840 terminal is changed to an AC voltage as shown in FIG. 10B through an AC voltage generator 820.
  • controller 830 controls at least one of the DC power source 810 and the AC voltage generator 820 to control the magnitudes of the first voltage level and the second voltage level.
  • controller 830 controls a period and a period in which the first voltage level and the second voltage level are applied.
  • the DC power supply 810 has a predetermined specific period (Ts, see FIG. 10), and during the first period T1 within the predetermined specific period, the first DC voltage corresponding to the first voltage level ( V1, see (a) of FIG. 10)), and in a second period T2 different from the first period T1 within the preset specific period, a second DC voltage corresponding to the second voltage level (V2, see Fig. 10(a))).
  • the controller 180 includes a first DC voltage (V1, FIG. 10) corresponding to a first voltage level during a first period (T1) within a predetermined period (Ts, see FIG. 10) of the DC power supply 810. (A))), and in the second period T2 different from the first period T1 within the preset specific period, the second DC voltage V2 corresponding to the second voltage level, FIG.
  • the DC power supply 810 is controlled so that (refer to (a) of 10)) is output.
  • the AC voltage generator (Voltage-fed Driver 820) has the same period as the preset specific period of the DC power, and the voltage level varies within the preset specific period. Is made to output.
  • the AC voltage generator (Voltage-fed Driver 820) generates an AC voltage using any one of various methods, for example, a Full Bride method, a Half Bridge method, a Two-Switch Flayback method, AC voltage can be generated by any one of the One-Switch Flyback methods.
  • a first section ( During T1), a first AC voltage V1 having a first voltage level is supplied.
  • the first and second electrode units 710 and 720 have a voltage lower than the first voltage level during a second period T2 different from the first period T1 within the preset specific period Ts.
  • a second AC voltage V2 having a second voltage level is supplied.
  • the first AC voltage is a first pulse wave having the first voltage level during the first period T1
  • the second AC voltage has the second voltage level during the second period T2. It may be made of a second pulse wave.
  • the DBD plasma emission reduction apparatus when AC voltages having different voltage levels are alternately supplied within one period, the DBD plasma emission reduction apparatus according to the present invention includes a second electrode by a positive AC voltage or a negative AC voltage. A phenomenon such as a current flowing in a direction opposite to the current flowing through the unit 720 occurs.
  • the first 1 An electric field (E1, E1') is formed.
  • second electric fields E2 and E2' are formed.
  • the first and second electric fields E1 and E2, or E1' and E2' are formed to have directions corresponding to each other.
  • the AC voltages having different voltage levels are repeatedly supplied alternately within the predetermined specific period, and changes in the electric field of the hollow portion converge in a constant pattern.
  • the first electric field E1 Appears, and in some other sections, the first electric field E1 and the second electric field E2 appear together.
  • the first electric field (E1, E2, see FIG. 11) is an electric field that appears when the first AC voltage V1 having the first voltage level is continuously applied for the predetermined period Ts. Can be conceptualized.
  • the second electric field (E2, E2, see FIG. 11) is a case where the voltage Vext equal to the difference between the first voltage level and the second voltage level is subtracted from the first AC voltage having the first voltage level. (See Fig. 10), it can occur.
  • an additional second electric field separately from the first electric fields E1 and E1' generated when a constant voltage level is supplied. (E2, E2') can be formed.
  • the second electrode part 720 has one end and the other end, and the intensity of the second electric field is a region corresponding to the one end and the other end than in the central region of the hollow part provided in the second electrode part (
  • the openings, 740, 750 may be formed harder.
  • the method of supplying the AC voltage by varying the voltage level within a predetermined specific period may have the same effect as additionally supplying current to the DBD plasma smoke reduction device through the current supply unit, as previously described in FIG. 2. have.
  • a direction in which current flows through the second electrode unit 720 by being supplied from the additional current source Iext forming the second electric field is opposite to the direction in which current flows through the second electrode unit 720 by the voltage supply unit. This is to obtain an additional second electric field radiated in the same direction as the first electric field.
  • the voltage supplied to the DBD plasma soot reduction device 700 is Vext (Iext*R (DBD plasma soot reduction device 700) from the voltage supply unit V It can be summarized by subtracting the resistance corresponding to ))).
  • an AC current may be additionally supplied to the DBD plasma smoke reduction apparatus according to the present invention.
  • the DBD plasma smoke reduction apparatus by repeatedly supplying a voltage lower than a predetermined level of voltage required by the DBD plasma smoke reduction apparatus in a specific section, power consumption is reduced and an additional electric field is formed. , The emission reduction efficiency can be improved.
  • the DBD plasma reduction apparatus can increase the soot reduction efficiency by increasing the strength of the electric field by varying the voltage level.
  • the DBD plasma reduction apparatus according to the present invention described above can be applied to transportation means such as vehicles and ships, and further, can be applied to various industrial fields such as air purifiers and water quality improvement apparatuses.
  • an electric field capable of increasing the smoke reduction efficiency can be additionally formed by supplying additional current to the electrode.
  • the DBD plasma soot reduction apparatus and the driving method thereof according to the present invention by repeatedly changing the supplied voltage level, the intensity of the electric field can be varied to increase the soot reduction efficiency.
  • the voltage level supplied as described above is repeatedly lowered, it is possible to reduce power consumption for driving the DBD plasma emission reduction apparatus.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Plasma Technology (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

La présente invention concerne un purificateur d'air utilisant une technologie plasma. Un purificateur d'air à plasma DBD selon la présente invention, qui est connecté électriquement à une unité d'alimentation en tension destinée à fournir une tension de courant alternatif et à une unité d'alimentation en courant destinée à fournir un courant, comprend : une première partie électrode formée pour s'étendre dans une direction et connectée électriquement à une première électrode de l'unité d'alimentation en tension ; une seconde partie électrode ayant une partie creuse dans laquelle est disposée la première partie électrode, la seconde partie électrode étant connectée électriquement à une seconde électrode de l'unité d'alimentation en tension ; et une partie diélectrique disposée entre la première partie électrode et la seconde partie électrode de telle sorte qu'un premier champ électrique ayant une première directivité est formé dans la partie creuse, sur la base du fait que la tension de courant alternatif est fournie à la première partie électrode et à la seconde partie électrode.
PCT/KR2020/001960 2019-02-13 2020-02-12 Purificateur d'air à plasma dbd et dispositif de réduction de gaz d'échappement WO2020166960A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR20190016936 2019-02-13
KR10-2019-0016936 2019-02-13
KR1020190021681A KR101980876B1 (ko) 2019-02-13 2019-02-25 Dbd 플라즈마 매연 저감 장치
KR10-2019-0021681 2019-02-25
KR10-2019-0057129 2019-02-25
KR1020190057129A KR102051986B1 (ko) 2019-02-13 2019-05-15 Dbd 플라즈마 공기청정기

Publications (1)

Publication Number Publication Date
WO2020166960A1 true WO2020166960A1 (fr) 2020-08-20

Family

ID=66681186

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2020/001960 WO2020166960A1 (fr) 2019-02-13 2020-02-12 Purificateur d'air à plasma dbd et dispositif de réduction de gaz d'échappement

Country Status (2)

Country Link
KR (2) KR101980876B1 (fr)
WO (1) WO2020166960A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101980876B1 (ko) * 2019-02-13 2019-05-23 주식회사 가교테크 Dbd 플라즈마 매연 저감 장치
WO2023085861A1 (fr) 2021-11-11 2023-05-19 강호림 Générateur de rideau de plasma à l'état de pression atmosphérique fonctionnant à l'aide d'une haute tension et d'une force magnétique, et installation d'incinération à vide réduit pour le traitement de déchets radioactifs de faible et moyenne activité à l'aide d'un tel générateur
KR102425713B1 (ko) 2021-11-11 2022-07-27 강호림 고전압과 자력을 이용한 대기압 상태에서의 플라즈마 커튼 발생 장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004346768A (ja) * 2003-05-20 2004-12-09 Toyota Motor Corp 排気浄化用リアクター
JP2010138842A (ja) * 2008-12-12 2010-06-24 Toshiba Corp ガス浄化装置
KR101076093B1 (ko) * 2009-11-10 2011-10-21 제주대학교 산학협력단 플라즈마 반응기 및 이를 포함하는 배기가스 저감장치
KR101827600B1 (ko) * 2015-06-16 2018-03-23 한국기계연구원 배기가스 처리장치
KR101980876B1 (ko) * 2019-02-13 2019-05-23 주식회사 가교테크 Dbd 플라즈마 매연 저감 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004346768A (ja) * 2003-05-20 2004-12-09 Toyota Motor Corp 排気浄化用リアクター
JP2010138842A (ja) * 2008-12-12 2010-06-24 Toshiba Corp ガス浄化装置
KR101076093B1 (ko) * 2009-11-10 2011-10-21 제주대학교 산학협력단 플라즈마 반응기 및 이를 포함하는 배기가스 저감장치
KR101827600B1 (ko) * 2015-06-16 2018-03-23 한국기계연구원 배기가스 처리장치
KR101980876B1 (ko) * 2019-02-13 2019-05-23 주식회사 가교테크 Dbd 플라즈마 매연 저감 장치

Also Published As

Publication number Publication date
KR102051986B1 (ko) 2019-12-17
KR101980876B1 (ko) 2019-05-23

Similar Documents

Publication Publication Date Title
WO2020166960A1 (fr) Purificateur d'air à plasma dbd et dispositif de réduction de gaz d'échappement
WO2018110883A1 (fr) Système de décollage et d'atterrissage de drone
WO2014058196A2 (fr) Appareil d'alimentation de diode électroluminescente et procédé d'alimentation pour l'alimentation continue d'une diode électroluminescente
WO2018199417A1 (fr) Appareil de réaction à plasma incandescent pour le traitement de l'eau et son procédé de fonctionnement
WO2015152548A1 (fr) Module électroluminescent
EP1380346A4 (fr) Procede de separation electrostatique de particules, appareil de separation electrostatique de particules et systeme de traitement
KR970706068A (ko) 전기 집진 장치(Electrostatic Precipitator)
WO2019245120A1 (fr) Dispositif de commande de batterie et véhicule le comprenant
WO2019203413A1 (fr) Dispositif pour éliminer des composants de tartre de l'eau
WO2018056553A1 (fr) Super-condensateur pourvu d'un connecteur série et parallèle
WO2014084631A1 (fr) Dispositif d'équilibrage de cellules d'un module de batterie et procédé associé
WO2015005667A1 (fr) Appareil de production de torche à plasma liquide
WO2022114418A1 (fr) Élément de chauffage d'électrode, dispositif de chauffage d'électrode le comprenant et procédé de commande de prévention de fuite électrique appliqué à celui-ci
WO2020111294A1 (fr) Dispositif de collecte de poussière à cyclone et procédé de collecte de poussière l'utilisant
WO2021172686A1 (fr) Ioniseur à plasma basse tension
WO2020204546A1 (fr) Dispositif de charge et appareil de collecte de poussière
WO2020204243A1 (fr) Appareil de réduction de matière particulaire de gaz d'échappement à base de plasma non thermique pour empêcher un phénomène d'arc électrique
WO2019151564A1 (fr) Système de réduction de matière particulaire dans un gaz d'échappement
WO2020159324A1 (fr) Système d'alimentation électrique et de collecte de courant pour charge sans fil sur route d'un véhicule électrique et machine industrielle
WO2017188757A2 (fr) Appareil d'éclairage à diodes électroluminescentes du type à gradation possédant un dispositif d'alimentation électrique sans condensateur électrolytique
WO2023146283A1 (fr) Transformateur à semi-conducteur et dispositif d'alimentation haute tension modulaire
WO2015105253A1 (fr) Appareil d'amélioration du rendement énergétique
WO2019117323A1 (fr) Disjoncteur à courant continu à tension et courant nuls
WO2022220367A1 (fr) Dépoussiéreur électrostatique modulaire
WO2018016832A1 (fr) Bloc d'alimentation et dispositif laser le comprenant

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20755839

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20755839

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 20755839

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 26/04/2022)

122 Ep: pct application non-entry in european phase

Ref document number: 20755839

Country of ref document: EP

Kind code of ref document: A1