JP4633024B2 - Air cleaner - Google Patents

Description

  The present invention relates to an air cleaner that captures and removes dust that is airborne particles.

  Conventionally, a discharge tank is provided in parallel between a plurality of disk-shaped dust collecting plates and the dust collecting plate, and the lower part of the dust collecting plate is immersed in the lower part of the dust collecting plate to wash and retain water And a shaft is connected to the dust collecting plate and rotated by a motor, and charged by a high-voltage power supply device (see, for example, Patent Document 1).

JP-A-6-142548 (paragraph numbers 0022 to 0024, FIGS. 1 and 2)

  In the prior art, the plurality of disk-shaped dust collecting plates are only in contact with the water stored in the water tank, and the detergency is poor. Therefore, a solution for adding a lower alcohol, sodium hydroxide, a surfactant or the like has been proposed. However, these materials have to be regularly replenished, and there is a problem that maintenance is troublesome.

  The present invention has been made to solve the above-described problems, and can obtain an air cleaner that can efficiently collect contaminated air, can automate maintenance, and has little performance deterioration due to aging. With the goal.

An air purifier according to the present invention includes an ionization unit that generates corona discharge between a discharge electrode and a counter electrode to charge dust in the air, a flat high-voltage electrode to which a high voltage is applied, and a ground. In an air cleaner provided with a dust collecting device comprising a plurality of plate-like dust collecting electrodes arranged alternately and in parallel with the wind flow, and a collector part for collecting dust charged by the ionization part, A water supply tank, a hydrogen peroxide generator that generates hydrogen peroxide by electrolyzing water supplied from the water supply tank to generate a cleaning solution containing hydrogen peroxide, and the dust collection electrode and the high-pressure electrode A cleaning nozzle that is disposed in the vicinity of the rotation center of the hydrogen peroxide generator and sprays the cleaning liquid supplied from the hydrogen peroxide generator toward the dust collection electrode and the high-pressure electrode, and the dust collection of the collector unit Electrodes and the high-voltage electrode That is, at least the dust collection electrode has a disk shape that is rotatably supported, and the dust collection electrode and the high-voltage electrode of the collector portion are formed by an insulating member that extends radially from the vicinity of the center portion of the dust collection electrode. The high-voltage electrode is divided into a plurality of pieces .

An air purifier according to the present invention includes an ionization unit that generates corona discharge between a discharge electrode and a counter electrode to charge dust in the air, a flat high-voltage electrode to which a high voltage is applied, and a ground. In an air cleaner provided with a dust collecting device comprising a plurality of plate-like dust collecting electrodes arranged alternately and in parallel with the wind flow, and a collector part for collecting dust charged by the ionization part, A water supply tank, a hydrogen peroxide generator that generates hydrogen peroxide by electrolyzing water supplied from the water supply tank to generate a cleaning solution containing hydrogen peroxide, and the dust collection electrode and the high-pressure electrode A cleaning nozzle that is disposed in the vicinity of the rotation center of the hydrogen peroxide generator and sprays the cleaning liquid supplied from the hydrogen peroxide generator toward the dust collection electrode and the high-pressure electrode, and the dust collection of the collector unit Electrodes and the high-voltage electrode That is, at least the dust collection electrode has a disk shape that is rotatably supported, and the dust collection electrode and the high-voltage electrode of the collector portion are formed by an insulating member that extends radially from the vicinity of the center portion of the dust collection electrode. Since the high voltage electrode is divided into a plurality of parts , contaminated air can be efficiently collected, and it is not necessary to add chemicals, so that maintenance can be automated. Since it does not accumulate, performance degradation due to aging can be reduced.

Embodiment 1 FIG.
FIG. 1 is a perspective view of an air cleaner according to Embodiment 1 of the present invention, and FIG. As shown in FIGS. 1 and 2, the air cleaner according to Embodiment 1 of the present invention is disposed on the lee side of the ionization unit 1 that charges dust that is airborne particles and the ionization unit 1. And a dust collecting device including a collector unit 4 for collecting charged dust.
The ionization unit 1 is a discharge electrode 2 composed of a metal wire wire, a flat projection electrode, a needle electrode, or the like to which a high voltage is applied, a metal or conductive resin, or a resin plated with conductive It is comprised with the counter electrode 3 comprised by these. The collector section 4 is arranged in parallel to the wind flow, and a plurality of disc-shaped dust collecting electrodes 5 to be grounded and flat plate-shaped high-voltage electrodes 6 to which a high voltage is applied are alternately arranged.

  The dust collecting electrode 5 is made of a metal or a conductive resin, or a resin plated with a conductive material. The high voltage electrode 6 is a metal or a conductive resin or a resin plated with a conductive material. It is composed of a semiconductive resin or the like. The dust collection electrode 5 is fixed to a shaft 27 whose center is rotatably supported by the support member 7, and is rotated by a driving means (not shown). The support member 7 and the shaft 27 are made of a conductive material such as metal and are electrically connected to the dust collection electrode 5. The high voltage electrode 6 is electrically connected by the power supply unit 8 and a high voltage is applied. In addition, a hole through which the shaft 27 does not contact the high voltage electrode 6 is provided at the center of the high voltage electrode 6.

  A cleaning tank 9 is disposed below the dust collection electrode 5 and the high voltage electrode 6, and a hydrogen peroxide generator 10 is attached to the cleaning tank 9. When water is first stored in the cleaning tank 9, hydrogen peroxide is generated in the water by electrolysis by the hydrogen peroxide generator 10, and cleaning liquid containing hydrogen peroxide is stored. The dust collecting electrode 5 is partly immersed in a cleaning liquid containing hydrogen peroxide stored in the cleaning tank 9 while rotating, and the other part not immersed in the cleaning liquid is exposed to the flow path through which the wind passes. It is configured.

  The discharge electrode 2 and the counter electrode 3 of the ionization unit 1 are connected to a high voltage power supply 11 that applies a high voltage of several kV to several tens kV of direct current, and the dust collection electrode 5 and the high voltage electrode 6 of the collector unit 4 are connected to Is connected to a high voltage power supply 12 for applying a high voltage of several kV to several tens of kV. The hydrogen peroxide generator 10 includes a cathode and an anode (not shown), and is connected to a power supply 13 that applies a voltage of several VDC.

Next, operation | movement of the air cleaner of Embodiment 1 is demonstrated with reference to FIG.
In the air cleaner configured as described above, dust that is airborne particles passes through the ionization unit 1 and the collector unit 4 in this order. At this time, a high voltage of several kV to several tens kV of direct current is applied from the high voltage power source 11 to the ionization unit 1 to generate corona discharge from the discharge electrode 2 to the counter electrode 3, and dust that is airborne particles is generated. Charged. The charged dust flows into the collector unit 4. In the collector unit 4, dust charged by the Coulomb force generated by the electric field between the dust collection electrode 5 and the high voltage electrode 6 generated by applying a high voltage of several kV to several tens of kV from the high voltage power source 12 is collected. The air collected and cleaned by the dust electrode 5 is blown out.

Part of the dust collecting electrode 5 is immersed in a cleaning liquid containing hydrogen peroxide stored in the cleaning tank 9, and is periodically rotated by the driving means, and the collected dust is cleaned by the cleaning liquid.
The portion of the dust collection electrode 5 that is not immersed in the cleaning liquid is exposed to the flow path through which the wind passes, and the charged dust is collected by the ionization unit 1.
At this time, it is desirable that 1/10 to 1/2 of the surface area of the dust collecting electrode 5 is immersed in the cleaning liquid stored in the cleaning tank 9. If the surface area is less than 1/10, cleaning with the cleaning liquid is not sufficiently performed, and if the surface area exceeds 1/2, the portion of the dust collecting electrode 5 exposed to the flow path through which the wind passes decreases. This is because the dust charged by the ionization unit 1 cannot be sufficiently collected.

  In the washing tank 9, a voltage of several VDC is applied to the hydrogen peroxide generator 10 from the power supply 13, and the stored water is electrolyzed by the cathode and anode of the hydrogen peroxide generator 10 to generate hydrogen peroxide. And a cleaning solution containing hydrogen peroxide. When the dust collecting electrode 5 is immersed in the cleaning liquid, the dust adhering to the dust collecting electrode 5 is peeled off and cleaned by hydroxyl radicals (OH) generated by the decomposition of hydrogen peroxide.

  The dust collecting electrode 5 is made of a metal or a conductive resin, or a resin plated with a conductive plating. The surface of the dust collecting electrode 5 is a catalyst, an adsorbent, or a chemical additive that traps odorous gas components in the air. It is desirable to carry one or more of them. In this case, gas components are also collected together with dust in the air to clean the air. The trapped gas component is cleaned by the cleaning liquid when the dust collecting electrode 5 is immersed in the cleaning liquid.

  As the catalyst, for example, a metal oxide catalyst such as manganese oxide, copper oxide, titanium oxide, chromium oxide, iron oxide, nickel oxide, zinc oxide, and cobalt oxide is used. For the adsorbent, for example, an odor substance is physically used. Adsorbents such as zeolite, activated carbon, silica gel, silicon oxide, etc. are used, and chemical additives include, for example, amine-based additives and phosphoric acid that chemically adsorb odorous gases to the chemical additives. used.

  Gases collected and decomposed by the above catalyst are methyl mercaptan, hydrogen sulfide, methyl sulfide, formaldehyde, acetaldehyde, propionaldehyde, normal butyraldehyde, isobutyraldehyde, normal valeraldehyde, isovaleraldehyde and isobutanol. Yes, physisorbed and then decomposed by catalytic reaction.

The gas collected by the adsorbent is ammonia, ethyl acetate, toluene, xylene, ethylbenzene, styrene, methyl isobutyl ketone, acetic acid, propionic acid, normal butyric acid, normal valeric acid, isovaleric acid, ethanol, Nonanal and the like are physically adsorbed and trapped on the adsorbent.
Further, the odor gas collected by the chemical additive captures aldehydes in the case of an amine-based additive and ammonia in the case of phosphoric acid by chemical bonding to the chemical additive.

In the first embodiment, the hydrogen peroxide generator 10 is attached to the cleaning tank 9, and the cleaning liquid containing hydrogen peroxide is generated in the cleaning tank. However, instead of the hydrogen peroxide generator 10, an ultrasonic element is used. It may be attached. In that case, dust adhered to the dust collecting electrode 5 is peeled off and cleaned by ultrasonic waves generated in the cleaning liquid.
Further, most of the dust is captured by the dust collecting electrode 5, but there is also dust adhering to the high voltage electrode 6 due to repulsion, so the high voltage electrode 6 may be rotated.

  As described above, according to the air cleaner according to Embodiment 1 of the present invention, the ionization unit 1 that generates corona discharge between the discharge electrode 2 and the counter electrode 3 to charge dust in the air, A plurality of flat plate-like high-voltage electrodes 6 to which a high voltage is applied and a flat plate-like dust collecting electrode to be grounded are alternately arranged in parallel to the wind flow, and collect dust charged by the ionization unit 1. In the air cleaner provided with the dust collecting device including the collector unit 4, a cleaning tank 9 in which a cleaning liquid containing hydrogen peroxide is stored is provided below the collector unit 4, and the dust collecting electrode 5 of the collector unit 4 includes Since the disk is supported by the support member 7 in a rotatable manner, a part of the disk is immersed in the cleaning liquid while rotating, and the other part not immersed in the cleaning liquid is exposed to the flow path through which the wind passes. It can be collected well, and the addition of drugs etc. Since it even without automate maintenance, further, the dust over time does not accumulate in the dust collecting electrode 5, it is possible to reduce the performance degradation due to time change.

  Further, since the cleaning liquid is a cleaning liquid containing hydrogen peroxide, the cleaning performance is improved, and the collected dust can be cleaned well. Hydrogen peroxide is easily obtained by electrolyzing water and has no environmental impact.

Further, since 1/10 to 1/2 of the surface area of the dust collecting electrode 5 is immersed in the cleaning liquid, the cleaning with the cleaning liquid is sufficiently performed, and the part where the dust collecting electrode 5 is exposed to the flow path through which the wind passes Is sufficient, and dust charged by the ionization unit 1 can be sufficiently collected.
Further, since the hydrogen peroxide generator 10 that generates hydrogen peroxide contained in the cleaning liquid of the cleaning tank 9 is provided, the cleaning liquid can be supplemented with hydrogen peroxide, and cleaning can be performed efficiently.

  In addition, since one or more kinds of catalysts, adsorbents, and chemical adsorbents that trap gas components in the air are supported on the dust collecting electrode 5, the gas components in the air can be efficiently collected. The collected gas components can be automatically washed, and performance degradation due to changes over time can be reduced.

  Further, by using an ultrasonic element in place of the hydrogen peroxide generator 10, it is possible to efficiently perform cleaning by urging separation of dust collected in the cleaning liquid.

Embodiment 2. FIG.
3 is a perspective view of the air cleaner according to Embodiment 1 of the present invention, and FIG. 4 is a cross-sectional configuration diagram. The same or corresponding parts as in FIGS. 1 and 2 of the first embodiment are denoted by the same reference numerals and description thereof is omitted.
As shown in FIGS. 3 and 4, the air cleaner according to Embodiment 2 of the present invention includes an ionization unit 1 that charges dust that is airborne particles and a collector unit that collects charged dust. 4 dust collecting device.
The dust collecting electrode 5 and the high-voltage electrode 6 of the collector section 4 are disk-shaped, and the central portion is fixed to a shaft 27 via an insulating material 28. The shaft 27 is rotatably supported by the support member 7, and driving means. (Not shown). The plurality of dust collecting electrodes 5 are electrically connected by a conductive material such as metal, and the plurality of high voltage electrodes 6 are electrically connected by a conductive material such as metal.

  A water supply tank 14 for storing tap water is disposed at a location different from the air passage, and the hydrogen peroxide generator 10 is connected to the water supply tank 14. Hydrogen peroxide is delivered to the cleaning nozzle 16 by a hose 15 extending from the hydrogen peroxide generator 10. The cleaning nozzle 16 is disposed in the vicinity of the center of rotation between the dust collection electrode 5 and the high-pressure electrode 6, and the dust collection electrode 5 and the high-pressure electrode 6 are washed by hydrogen peroxide ejected from the cleaning nozzle 16. Below the dust collection electrode 5 and the high-voltage electrode 6, a sewage reservoir 17 is provided for retaining sewage after washing. The dust collecting electrode 5 and the high voltage electrode 6 are configured to be partially cleaned while rotating, and the portion not cleaned is configured to be exposed to a flow path through which wind passes.

The dust collection electrode 5 and the high voltage electrode 6 are each divided into a plurality of dust collection electrodes 5 and high voltage electrodes 6 by an insulating member 18 extending radially from the vicinity of the respective rotation center portions, An electrical short circuit of the high voltage electrode 6 is suppressed.
Further, a high-voltage power supply (not shown) is connected to the discharge electrode 2 and the counter electrode 3 of the ionization unit 1 as in the first embodiment, and a high voltage of several kV to several tens kV of direct current is applied. The A high voltage power source (not shown) is connected to the dust collecting electrode 5 and the high voltage electrode 6 of the collector unit 4, and a high voltage of several kV to several tens kV of direct current is applied. The hydrogen peroxide generator 10 is connected to a power source (not shown) for applying a DC voltage of several volts.

  As in the first embodiment, it is desirable to support one or more of a catalyst, an adsorbent, and a chemical adsorbent that trap gas components in the air on the surface of the dust collection electrode 5. In this case, the same effect as described in the first embodiment can be obtained.

Next, the operation of the air cleaner of the second embodiment will be described with reference to FIGS.
In the air purifier configured as described above, the dust that is airborne particles is applied to the ionization unit 1 with a high voltage as in the first embodiment, and the dust that is airborne particles is generated. The charged and charged dust is collected in the dust collecting electrode 5 by the electric field between the dust collecting electrode 5 and the high voltage electrode 6 generated by applying a high voltage in the collector section 4, and purified air. Blows out.

In the collector unit 4, when water is supplied from the water supply tank 14 to the hydrogen peroxide generator 10, hydrogen peroxide is generated by electrolysis, and the cleaning liquid is discharged from the cleaning nozzle 16 through the hose 15 to the high pressure of the dust collecting electrode 5. It is injected toward the electrode 6. At this time, the cleaning liquid is sprayed from the cleaning nozzle 16 disposed in the vicinity of the rotation center between the dust collection electrode 5 and the high voltage electrode 6 toward the lower part of the dust collection electrode 5 and the high voltage electrode.
The dust collection electrode 5 and the high voltage electrode 6 are rotated periodically, and a part of the dust collection electrode 5 and the high voltage electrode 6 is washed, and the other part sufficiently collects dust charged by the ionization unit 1. The sewage after washing is stored in the sewage reservoir 17.
The cleaning nozzle 16 may be disposed in the vicinity of the dust collection electrode 5 and the high voltage electrode 6. At this time, the cleaning liquid is sprayed toward the cleaning nozzle 16 so that the cleaning liquid is applied to part of the dust collection electrode 5 and the high-voltage electrode 6.

  As described above, the air cleaner according to Embodiment 2 of the present invention includes the ionization unit 1 that generates corona discharge between the discharge electrode 2 and the counter electrode 3 to charge dust in the air, and the high voltage Is applied to the plate-shaped high-voltage electrode 6 and the grounded plate-shaped dust collecting electrode alternately arranged in parallel to the wind flow, and collects the dust charged by the ionization unit 1. In the air cleaner equipped with the dust collecting device consisting of 4, the water supply tank 14 and the water supplied from the water supply tank 14 are electrolyzed to generate hydrogen peroxide to generate a cleaning liquid containing hydrogen peroxide. A cleaning nozzle that is disposed in the vicinity of the hydrogen peroxide generator 10 and the dust collecting electrode 5 and the high voltage electrode 6 and that injects the cleaning liquid supplied from the hydrogen peroxide generator 10 toward the dust collecting electrode 5 and the high voltage electrode 6. 16 and a dust collector of the collector unit 4 5 and the high-voltage electrode 6, at least the dust collecting electrode 5 is rotatably supported and has a disk shape, so that maintenance can be automated, and further, dust does not collect in the dust collecting electrode 5 even if time passes. It is possible to reduce performance degradation due to time change.

  Further, since the cleaning nozzle 16 is disposed in the vicinity of the center of rotation between the dust collection electrode 5 and the high voltage electrode 6, the cleaning liquid can be sprayed to the dust collection electrode 5 and the high voltage electrode 6 from the center toward the outer periphery. The entire surfaces of the dust collection electrode 5 and the high voltage electrode 6 can be cleaned by one rotation.

Further, since the dust collection electrode 5 and the high voltage electrode 6 are each divided into a plurality of parts by the insulating members 18 extending radially from the vicinity of the center of each of the dust collection electrode 5 and the high voltage electrode 6, the dust collection electrode 5 by water droplets after washing is used. And the high-voltage electrode 6 can be suppressed, and dust in the air can be efficiently collected.
In the first embodiment as well, the dust collection electrode 5 and the high voltage electrode 6 are divided into a plurality of parts by the insulating members 18 extending radially from the vicinity of the center of the dust collection electrode 5 and the high voltage electrode 6, and the water is used for cleaning An electrical short circuit between the dust collection electrode 5 and the high voltage electrode 6 may be suppressed.
In the second embodiment, both the dust collection electrode 5 and the high voltage electrode 6 are rotated. However, the dust collection electrode 5 may be rotated and the high voltage electrode 6 may be fixed.

Embodiment 3 FIG.
FIG. 5 is a cross-sectional configuration diagram of an air cleaner according to Embodiment 3 of the present invention, and FIG. 6 is a perspective view seen from the back side. Components identical or corresponding to those in FIG. 1 of the first embodiment are denoted by the same reference numerals, and description thereof is omitted. As shown in FIGS. 5 and 6, the air cleaner according to Embodiment 3 of the present invention includes an ionization unit 1 that charges dust that is airborne particles and a collector unit that collects charged dust. 4 dust collecting device.
A pair of collector parts 4 are arranged at right angles to the flow of wind, have a plurality of openings 19a, are arranged between a flat plate-like ground electrode 19 to be grounded, and a pair of ground electrodes 19, A flat plate-like high-voltage electrode 20 to which a high voltage is applied, and a fibrous dust collection filter 21 disposed so as to be sandwiched between the pair of ground electrodes 19 and the high-voltage electrode 20. A cleaning tank 9 in which the cleaning liquid is stored and a part of the fibrous dust collecting filter 21 is immersed, and a hydrogen peroxide generator 10 connected to the cleaning tank 9.

  The fibrous dust collecting filter 21 has an annular shape, and can be moved cyclically between the ground electrode 19 and the high-voltage electrode 20 by a roller 22 that is a support member driven by a motor 29. A part of the dust collecting filter 21 is immersed in a cleaning solution containing hydrogen peroxide. The fibrous dust collection filter 21 is made of glass fiber or plastic fiber and carries one or more of a catalyst, an adsorbent, and a chemical adsorbent that trap gas components in the air.

The ground electrode 19 is made of a metal, a conductive resin, or a resin obtained by performing conductive plating. The high-voltage electrode 20 is made of a metal or a conductive resin, a resin obtained by performing conductive plating, a semiconductive resin, or the like. Further, both the ground electrode 19 and the high voltage electrode 20 are provided with openings 19a and 20a through which air flows.
A high voltage power source (not shown) is connected to the ground electrode 19 and the high voltage electrode 20, and a DC or AC voltage of several kV to several tens kV is applied.

  In the air cleaner configured as described above, the dust charged by the ionization unit 1 is captured by the fibrous dust collecting filter 21. The fibrous dust collection filter 21 is disposed so as to be sandwiched between the ground electrode 19 and the high-voltage electrode 20, so that the fibrous dust collection filter 21 is polarized, and the dust charged by the electric field is fibrous. Is collected by the dust collection filter 21. In addition, gas components in the air are captured by a mechanism similar to that of the first embodiment by a catalyst, an adsorbent, and a chemical additive. The fibrous dust collection filter 21 periodically moves between the ground electrode 19 and the high voltage electrode 20 by a roller 22, and dust and gas components captured by the fibrous dust collection filter 21 are stored in the cleaning tank 9. It is periodically cleaned with a cleaning solution containing hydrogen peroxide.

  As described above, the air cleaner according to Embodiment 3 of the present invention includes the ionization unit 1 that generates corona discharge between the discharge electrode 2 and the counter electrode 3 to charge dust in the air, and the ionization unit. In the air cleaner provided with a dust collecting device comprising the collector part 4 that collects the dust charged at 1, at least a pair of the collector parts 4 are arranged at right angles to the wind flow, and a plurality of openings 19 a A flat ground electrode 19 to be grounded, a flat high voltage electrode 20 disposed between the pair of ground electrodes 19 and having a plurality of openings 20a to which a high voltage is applied; An annular and fibrous dust collection filter 21 provided so as to be able to move around the high-voltage electrode 20 and a cleaning liquid for cleaning the fibrous dust collection filter 21 provided below the collector portion 4 is stored. The tank 9 is provided and the collector 4 A part of the fibrous dust collecting filter 21 is immersed in the cleaning liquid while moving between the ground electrode 19 and the high-voltage electrode 20, so that maintenance can be automated and the dust is collected even if time passes. Since it does not accumulate in 5, it is possible to reduce performance degradation due to time changes.

Further, since the cleaning liquid is a cleaning liquid containing hydrogen peroxide, the cleaning performance is improved, and the collected dust can be cleaned well.
Further, the fibrous dust collecting filter 21 is formed of glass fiber or plastic fiber and carries one or more of a catalyst, an adsorbent, and a chemical adsorbent that trap gas components in the air. Since the dust collection filter 21 is formed of glass fiber or plastic fiber, the dust collection filter 21 is easily polarized by the ground electrode 19 and the high-voltage electrode 20, and the electric field strength can be increased, thereby improving dust collection efficiency. Furthermore, by supporting one or more of a catalyst, an adsorbent, and a chemical adsorbent that trap gas components in the air, the gas components in the air can be efficiently collected. Cleaning can be performed automatically, and performance degradation due to changes over time can be reduced.
In the third embodiment, the pair of ground electrodes 19 and the collector portion 4 including the high-voltage electrode 20 and the fibrous dust collecting filter 21 disposed between the pair of ground electrodes 19 are shown. May be.

Embodiment 4 FIG.
FIG. 7 is a cross-sectional configuration diagram of an air cleaner according to Embodiment 4 of the present invention. The same or corresponding parts as those in FIG. 1 of the first embodiment and FIG. 5 of the third embodiment are denoted by the same reference numerals, and the description thereof is omitted. As shown in FIG. 7, the air cleaner according to the fourth embodiment of the present invention incorporates the dust collecting device of the air cleaner described in the third embodiment into an actual machine. The prefilter 23 that traps relatively large dust in the air on the windward side of the dust collection device of the air cleaner described above, the vaporization filter 24, and a part of the clean air that has passed through the prefilter 23 and the dust collection device are vaporized. Air that has passed through the filter 24 and has been humidified is divided into two air paths, that is, an air path that leads to the sirocco fan 25 and an air path that does not pass through the vaporization filter 24 and is directly guided to the sirocco fan 25; A water supply tank 14 in which water is stored, a tray 30 which is provided integrally with the cleaning tank 9, stores water supplied from the water supply tank 14, and immerses a part of the vaporization filter, and the water supply tank 14 La supplied water by electrolyzing to produce hydrogen peroxide, and a hydrogen peroxide generator 10, the cleaning solution containing hydrogen peroxide.

  The tray 30 in which the vaporization filter 24 is immersed and the cleaning tank 9 in which the fibrous dust collection filter 21 is washed are integrated, but the water guided from the water supply tank 14 to the tray 30 is a fibrous dust collection filter. Although water flows into the washing tank 9 in which 21 is washed, it does not flow conversely.

In the air purifier configured as described above, relatively large dust in the air is captured by the pre-filter 23, and a part of the clean air that has passed through the dust collection device including the ionization unit 1 and the collector unit 4 is vaporized filter 24. Humidified air that has passed through the humidified air and clean air that does not pass through the vaporizing filter 24 are exhausted by the sirocco fan 25.
On the other hand, the water guided from the water supply tank 14 to the tray 30 also flows into the cleaning tank 9, and the water stored in the cleaning tank 9 is electrolyzed by the hydrogen peroxide generator 10 to generate hydrogen peroxide. The cleaning liquid contains hydrogen oxide. The fibrous dust collection filter 21 is periodically cleaned with a cleaning solution containing hydrogen peroxide.
Although the hydrogen peroxide generator 10 is used in the fourth embodiment, an ultrasonic element may be used.

  As described above, the air cleaner according to the fourth embodiment of the present invention is disposed on the windward side of the ionization unit 1 and captures relatively large dust in the air, the prefilter 23 and the collector. Equipped with a vaporizing filter 24 that humidifies part or all of the clean air that has passed through the dust device, and a blower that blows out the air humidified by the vaporizing filter 24 and clean air, so that dust in the air is efficiently captured. In addition to cleaning the air, it can be humidified.

  Moreover, it is provided integrally with the washing tank, stores the water supplied from the water supply tank 14, and electrolyzes the water 30 supplied from the water supply tank 14 by electrolyzing the water 30 supplied from the lower portion of the vaporization filter 24, and the excess of the cleaning liquid. Since it has a hydrogen peroxide generator 10 that generates hydrogen oxide, dust in the air can be efficiently collected, and the collected dust can be automatically washed, and performance degradation due to changes over time is small. In addition to air purification, humidification can be performed, and space can be saved by integrating the tray into which the vaporizing filter is immersed and the washing tank.

Embodiment 5. FIG.
FIG. 8 is a cross-sectional configuration diagram of an air cleaner according to Embodiment 5 of the present invention. The same reference numerals are given to the same or equivalent parts in FIG. 1 of the first embodiment, FIG. 5 of the third embodiment, and FIG. 7 of the fourth embodiment, and the description thereof will be omitted. As shown in FIG. 8, the air cleaner according to Embodiment 5 of the present invention is provided with a dust collection filter 26 on the windward side except for the actual air cleaner described in Embodiment 4 and the ionization part. Is.

  In the air cleaner configured as described above, a part of the dust in the air is captured by the dust collection filter 26. The dust that has passed through the dust collection filter 26 is further captured by the fibrous dust collection filter 21. The fibrous dust collection filter 21 is disposed so as to be sandwiched between a ground electrode 19 to be grounded and a high voltage electrode 20 to which a high voltage is applied, and the electric field strength is increased by polarization by the ground electrode 19 and the high voltage electrode 20. , The collection efficiency is improved.

  In the fifth embodiment, the fibrous dust collection filter 21 is sandwiched between the ground electrode 19 and the high voltage electrode 20, but even when the ground electrode 19 and the high voltage electrode 20 are not present, the combination with the dust collection filter 26 increases the height. It is possible to achieve the collection efficiency.

In addition, the performance of the dust collection filter 26 determines the dust collection performance (dust collection efficiency x air volume; the ability to clean the room). If a ULPA filter or a HEPA filter is used, the dust collection efficiency is 99% or more. Appropriate selection is necessary as pressure loss increases, airflow decreases, and noise increases. In the fourth embodiment, the dust collection efficiency is 80 to 90%, but the pressure collection is small and a large air volume can be produced, so that the dust collection performance is improved. Although the dust collection performance depends on the specifications of the dust collection filter 26, the dust collection performance can be set to the same level in the fourth and fifth embodiments, but in the fifth embodiment, the dust collection filter 26 needs to be replaced. However, in the case of Embodiment 4, since it is cleaned, the maintenance of that part is unnecessary.
Further, since the fibrous dust collection filter 21 can be made dielectric by the ground electrode 19 and the high voltage electrode 20, the dust collection efficiency is improved by about 20 to 30% compared to the case where there is no fiber dust collection filter.

  As described above, the air cleaner according to Embodiment 5 of the present invention is arranged on the leeward side of the dust collection filter 26 in the air cleaner that includes the dust collection filter 26 and the vaporization filter 24 that humidifies the air. A fibrous fibrous dust collecting filter 21 that is formed of glass fiber or plastic fiber and carries one or more of a catalyst, an adsorbent, and a chemical adsorbent that trap gas components in the air, and the fiber Cleaning tank 9 for storing a cleaning liquid for cleaning the dust collecting filter 21, a water supply tank 14, and water supplied from the water supply tank 14 to the cleaning tank 9 is electrolyzed to generate hydrogen peroxide, thereby generating the cleaning liquid. A hydrogen peroxide generator 10 that uses hydrogen peroxide as a cleaning liquid, and a tray 30 that stores the water supplied from the water supply tank 14 and immerses the lower part of the vaporization filter 24, The fiber-shaped dust collection filter 21 is formed in an annular shape and is supported so as to be able to cyclically move up and down, and a part thereof is immersed in the cleaning liquid while moving, so that dust in the air can be efficiently collected, In addition to cleaning the air, it can be humidified.

  A pair of flat ground electrodes 19 disposed on both the windward and leeward outer sides of the fibrous dust collection filter 21 and having a plurality of openings 19a and grounded, and the fibrous dust collection filter 21. A flat plate-like high-voltage electrode 20 having a plurality of openings 20a to which a high voltage is applied, and a fibrous dust collecting filter 21 is provided between the ground electrode 19 and the high-voltage electrode 20. Since it moves between, dust in the air can be collected efficiently.

It is a perspective view of the air cleaner which concerns on Embodiment 1 of this invention. It is a cross-sectional block diagram of the air cleaner which concerns on Embodiment 1 of this invention. It is a perspective view of the air cleaner which concerns on Embodiment 2 of this invention. It is a cross-sectional block diagram of the air cleaner which concerns on Embodiment 2 of this invention. It is a perspective view of the air cleaner which concerns on Embodiment 3 of this invention. It is the perspective view seen from the back direction of the air cleaner which concerns on Embodiment 3 of this invention. It is a cross-sectional block diagram of the air cleaner which concerns on Embodiment 4 of this invention. It is a cross-sectional block diagram of the air cleaner which concerns on Embodiment 5 of this invention.

Explanation of symbols

   DESCRIPTION OF SYMBOLS 1 Ionization part, 2 discharge electrode, 3 counter electrode, 4 collector part, 5 dust collection electrode, 6 high voltage electrode, 7 support member, 9 washing tank, 10 hydrogen peroxide generator, 14 water supply tank, 16 washing nozzle, 17 sewage Reservoir, 18 Insulating member, 19 Ground electrode, 19a opening, 20 High voltage electrode, 20a opening, 21 Dust collection filter, 22 Roller, 23 Prefilter, 24 Vaporization filter, 25 Sirocco fan, 26 Dust collection filter, 27 shaft, 30 trays.

Claims (2)

An ionization unit that generates corona discharge between the discharge electrode and the counter electrode to charge dust in the air;
A collector for collecting dust charged in the ionization section, in which a plurality of flat high-voltage electrodes to which a high voltage is applied and a flat dust-collecting electrode to be grounded are alternately arranged in parallel to the wind flow. In an air cleaner equipped with a dust collecting device consisting of
A water tank,
A hydrogen peroxide generator for electrolyzing water supplied from a water supply tank to generate hydrogen peroxide to generate a cleaning liquid containing hydrogen peroxide;
A cleaning nozzle that is disposed in the vicinity of the center of rotation between the dust collection electrode and the high-pressure electrode, and jets the cleaning liquid supplied from the hydrogen peroxide generator toward the dust collection electrode and the high-pressure electrode;
With
At least the collection electrode of the dust collection electrode and the high voltage electrode of the collector section, to name a rotatably supported disk-shaped,
The dust collector electrode and the high-voltage electrode of the collector part are each divided into a plurality of the dust-collection electrode and the high-voltage electrode by an insulating member extending radially from the vicinity of each central part. . The collecting dust electrode catalyst for trapping gas components in the air, the adsorbent, the air cleaner according to claim 1, characterized in that by supporting one or more of the chemical impregnated material.

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