JP4721921B2 - Air sanitizer - Google Patents

Description

  The present invention relates to an air sterilization apparatus capable of removing microorganisms, viruses, and the like floating in the air, and particularly relates to a technique for reducing the influence of scale generated during electrolysis.

In general, for the purpose of removing microorganisms, viruses, etc. floating in the air, electrolyzed water mist is diffused in the air, and this electrolyzed water mist is brought into direct contact with airborne microorganisms, viruses, etc. A sterilizing apparatus that is inactivated has been proposed (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 2002-181358

However, in the above sterilization apparatus, when the scale is generated and accumulated in the electrode for electrolysis by calcium ions or magnesium ions contained in tap water used for generating electrolyzed water, the electrolysis performance is obtained when operated for a long time. In addition, since the durability is lowered and the sterilization performance is lowered, there is a problem that frequent maintenance is required to maintain the sterilization performance.
Accordingly, an object of the present invention is to provide an air sterilization apparatus that can reduce the frequency of maintenance, maintain electrolysis performance and durability even when operated for a long period of time, and thus maintain sterilization performance. is there.

To solve the above problems, a gas-liquid contact member that will be disposed within the housing, and the gas-liquid contact member electrolytic water supply unit for supplying electrolytic water, the draw in room air through the inlet, the gas-liquid contact A blower fan that is brought into contact with the electrolyzed water supplied to the member and blown out from the blowout port; and a storage unit that stores the electrolyzed water, and the electrolyzed water supply unit electrolyzes the electrolyzed water to perform the electrolysis An electrolytic cell for generating water, a filter for removing scales flowing out of the electrolytic cell on the downstream side of the electrolytic cell, a circulation pump for circulating the electrolytic water, and a downstream side of the electrolytic cell And having a water spray hole forming portion in which a plurality of water spray holes are formed, and an electrolyzed water supply pipe for spraying the electrolyzed water, and bypassing the electrolyzed water supply pipe at a predetermined timing, the electrolyzed water is Circulate to circulation pump And the valve, wherein the filter is characterized in that it is arranged on the downstream side of the valve.
The electrolytic tank of the electrolyzed water supply unit electrolyzes tap water to generate electrolyzed water, and supplies the electrolyzed water to the gas-liquid contact member. The blower fan sucks indoor air from the suction port, makes it contact with the electrolyzed water supplied to the gas-liquid contact member, and blows it out from the air outlet, thereby bringing the indoor air into contact with the electrolyzed water so as to be sterilized. it can. At this time, the filter removes the scale that has flowed out of the electrolytic cell on the downstream side of the electrolytic cell.

In addition, the present invention provides a gas-liquid contact member disposed in a housing, an electrolyzed water supply unit that supplies electrolyzed water to the gas-liquid contact member, and sucks indoor air from a suction port. A blower fan that is brought into contact with the supplied electrolyzed water and blown out from the outlet, and a storage unit that stores the electrolyzed water, and the electrolyzed water supply unit electrolyzes the electrolyzed water to produce the electrolyzed water. An electrolyzer that generates water , a filter for removing scales flowing out of the electrolyzer on the downstream side of the electrolyzer, a circulation pump for circulating the electrolyzed water, and a downstream side of the electrolyzer. A water spray hole forming portion having a plurality of water spray holes formed therein, an electrolyzed water supply pipe for spraying the electrolyzed water, an inlet pipe connected to the electrolytic cell, and a first upstream side of the water spray hole forming portion. An outlet pipe is connected and upstream of the filter A second outlet pipe connected for a predetermined period at a predetermined timing, the second comprises a three-way valve is switched to the outlet pipe side, the said filter, characterized in that arranged on the upstream side of the storage tank It is said .

Further, the polarity of the electrode is reversed periodically or irregularly under a predetermined condition to remove the scale formed on the electrode, and the predetermined timing is a timing at which the polarity of the electrode is reversed. You may make it do.
Furthermore, the electrolyzed water may be electrolyzed water containing active oxygen species obtained by energizing the electrode to electrolyze tap water.
The active oxygen species may include at least one of hypochlorous acid, ozone, and hydrogen peroxide.

Furthermore, the electrolytic water supply unit, but it may also be supplied to the electrolytic water to the gas-liquid contact member by dropping the electrolytic water.

  According to the present invention, since the scale generated in the electrolytic cell is removed by the filter, the frequency of maintenance is reduced, and the electrolytic performance and durability are maintained even when operated for a long period of time. The performance can be maintained.

Embodiments of the present invention will be described below with reference to the drawings.
[1] First Embodiment FIG. 1 is an external perspective view of an air sterilizer according to an embodiment.
In FIG. 1, a floor-standing air sterilization apparatus 1 includes a box-shaped casing 2, which includes a leg piece 2A, a front panel 2B, and a top panel 2C. On both sides of 2C, an operation lid 2D and an opening / closing lid 2E are arranged side by side.

FIG. 2 is a perspective view showing an internal configuration of the air sterilization apparatus.
FIG. 3 is a longitudinal sectional view of the housing of the air sterilizer.
As shown in FIG. 2, a horizontally long suction port 3 is formed in the lower portion of the housing 2, and a prefilter 3 </ b> A is disposed above the suction port 3. A blower fan 7 is disposed above the pre-filter 3A, and a gas-liquid contact member 5 having high water retention is disposed above the blower fan 7 in a brace shape as shown in FIG. A horizontally long outlet 4 is disposed above the liquid contact member 5. The support plate 8 of the blower fan 7 is supported by the housing 2.
This gas-liquid contact member 5 is a filter member having a honeycomb structure, has a structure in which a wide gas contact area is ensured, electrolytic water can be dripped, and clogging is difficult.

FIG. 4 is an explanatory view of a gas-liquid contact member.
That is, as shown in FIG. 4, the gas-liquid contact member 5 is formed in a honeycomb shape as a whole by joining a material 5A bent into a wave shape and a flat material 5B. As these materials 5A and 5B, materials that are less reactive to electrolyzed water, that is, materials that are less deteriorated by electrolyzed water are used, as will be described later. For example, materials such as polyolefin resin, PET resin, vinyl chloride resin, fluororesin, or ceramic resin are used.

The inclination angle θ (see FIG. 3) of the gas-liquid contact member 5 is desirably 30 ° or more. In the case of less than that, the dropped electrolyzed water does not flow along the inclination of the gas-liquid contact member 5 but falls downward. Further, when the inclination angle θ approaches 90 °, the air blowing path passing through the gas-liquid contact member 5 becomes nearly horizontal, and it is difficult to blow upward by that much. When this blowing direction is horizontal, the blown air cannot be blown far away, and as described later, the device is not suitable for sterilization of a large space. This inclination angle θ is
80 °>θ> 30 °
Is preferred, and in this configuration is about 40 °.

FIG. 5 (A) to FIG. 5 (C) are diagrams for explaining an electrolyzed water supply state to the gas-liquid contact member.
FIG. 6 is an explanatory diagram of air sterilization.
Below the gas-liquid contact member 5, a water tray 9 (see FIG. 3) for receiving electrolyzed water is disposed, and a water tank support tray 10 is connected to the water tray 9. At this time, the bottom surface of the water tray 9 is inclined so that the water supply tank support tray 10 side is lowered so that the electrolyzed water flows into the water supply tank support tray 10.

The water supply tank support tray 10 is provided with a water supply tank 11 for supplying tap water containing chlorine ions into the support tray 10 and a circulation pump 13. An electrolytic tank 31 is connected to the circulation pump 13, and an electrolytic water supply pipe 17 is connected to the electrolytic tank 31 through a filter 20. The filter 20 contains, for example, a filter main body made of a nonwoven fabric or glass fiber in a housing, and does not pass solids such as scales, but allows liquid electrolytic water to pass.
The electrolyzed water supply pipe 17 has a sprinkling hole forming portion 17B in which a large number of sprinkling holes 17A (see FIG. 6) are formed on the outer peripheral portion, and sprinkles electrolytic water.
At this time, as shown in FIG. 5B, the electrolyzed water supply pipe 17 is inserted into a sprinkling portion 5C formed in a substantially cylindrical shape at the upper edge portion of the gas-liquid contact member 5.

  As shown in FIG. 5C, the electrolytic cell 31 includes three pairs of electrodes 32 and 33. When the electrodes 32 and 33 are energized, they electrolyze tap water flowing into the electrolytic cell 31. To generate reactive oxygen species. Here, the reactive oxygen species are oxygen molecules having an oxidation activity higher than that of normal oxygen and related substances, and so-called narrow definition such as superoxide anion, singlet oxygen, hydroxyl radical, or hydrogen peroxide. These active oxygens include so-called broadly active oxygens such as ozone and hypohalogen acids. The electrolytic cell 31 is arranged close to the gas-liquid contact member 5 and is configured to be able to immediately supply the active oxygen species generated by electrolyzing tap water to the gas-liquid contact member 5.

The electrodes 32 and 33 are, for example, electrode plates in which the base is made of Ti (titanium) and the coating layer is made of Ir (iridium) or Pt (platinum). The current value applied to the electrodes 32 and 33 is the current density. A predetermined free residual chlorine concentration (for example, 1 mg (milligram) / l (liter)) is generated as 20 mA (milliampere) / cm ² (square centimeter).
When the tap water is energized by the electrodes 32 and 33, the cathode electrode
4H ⁺ + 4e ⁻ + (4OH ⁻ ) → 2H ₂ + (4OH ⁻ )
And the anode electrode
2H ₂ O → 4H ⁺ + O ₂ + 4e ⁻
As soon as the reaction of
Chlorine ions contained in water (pre-added to tap water)
2Cl ⁻ → Cl ₂ + 2e ⁻
In addition, this Cl ₂ reacts with water,
Cl ₂ + H ₂ O → HClO + HCl
It becomes.

  In this configuration, when the electrodes 32 and 33 are energized, HClO (hypochlorous acid) having a high sterilizing power is generated, and air is passed through the gas-liquid contact member 5 to which this hypochlorous acid is supplied. The gas-liquid contact member 5 can prevent germs from breeding, and can inactivate viruses floating in the air passing through the gas-liquid contact member 5. Further, when the odor passes through the gas-liquid contact member 5, it reacts with hypochlorous acid in the electrolytic water, and is ionized and dissolved to be removed from the air and deodorized.

Next, the operation of the first embodiment will be described.
In FIG. 1, when the operation lid 2D is opened, an operation panel (not shown) is faced. By operating this operation panel, the operation of the floor-type air sterilizer 1 is started. When this operation is started, the circulation pump 13 is driven, and the tap water accumulated in the water supply tank support tray 10 is supplied to the electrolytic cell 31.
In the electrolytic bath 31, when the electrodes 32 and 33 are energized, tap water is electrolyzed to generate electrolytic water containing active oxygen species. After passing through the filter 20 and removing the scale generated in the electrolytic bath 31, the electrolyzed water is sprinkled into the watering box 5 </ b> C through the watering holes 17 </ b> A of the electrolyzed water supply pipe 17. It soaks into the upper edge of the contact member 5 and gradually gets wet toward the bottom.

  The surplus electrolyzed water is collected in the water receiving tray 9, flows down the slope of the upper surface of the water receiving tray 9, flows into the adjacent water supply tank support tray 10, and is stored there. In this configuration, when water is circulated and the amount of water is reduced by evaporation or the like, an appropriate amount of tap water is supplied to the water supply tank support tray 10 via the water supply tank 11. When the amount of water in the water supply tank 11 decreases, the opening / closing lid 2E (see FIG. 1) is opened, the water supply tank 11 is taken out, and tap water is supplied.

  The air-liquid contact member 5 wetted with the electrolyzed water is supplied with room air as indicated by an arrow X through the blower fan 7. The indoor air comes into contact with the active oxygen species soaked in the gas-liquid contact member 5 and is blown out into the room again. This reactive oxygen species has the function of destroying and eliminating (removing) the surface protein (spike) of the virus essential for infection when, for example, influenza virus invades into the indoor air. The influenza virus and the receptor (receptor) necessary for the virus to become infected do not bind, thereby preventing the infection. As a result of the verification test in collaboration with the Institute for Hygiene and Environment, it was found that 99% or more of the virus can be removed when the air in which the influenza virus has entered is passed through the gas-liquid contact member 5 of this configuration.

  In the first embodiment, the electrolyzed water passes through the filter 20 and is supplied to the gas-liquid contact member 5 after the scale generated in the electrolyzer 31 is removed. The situation of returning can be reduced, the frequency of maintenance can be reduced, the electrolytic performance and the durability can be maintained even after long-term operation, and the sterilization performance can be maintained.

  Further, according to the first embodiment, the indoor air sucked from the suction port 3 provided in the lower part of the housing 2 is brought into contact with the electrolyzed water dropped on the gas-liquid contact member 5, so that the housing 2 When the air sterilization apparatus 1 is installed in a so-called large space in, for example, a kindergarten, elementary / middle / high school, a nursing care insurance facility, a hospital, etc. Even so, indoor air that has been sterilized by contact with the electrolyzed water can be blown away from the large space, and air sterilization in the large space can be efficiently achieved. In addition, since the gas-liquid contact member 5 is disposed in a bracing manner in the floor-standing casing 2, the depth dimension of the casing 2 becomes smaller and thinner than when it is horizontally disposed. Furthermore, since the gas-liquid contact member 5 is formed of a material that is less reactive with the electrolyzed water, the durability of the gas-liquid contact member 5 is improved and the life thereof is extended. Moreover, since electrolyzed water is a dripping type, electrolyzed water can be uniformly moistened in the whole area of the gas-liquid contact member 5, and the air which passes through this can be disinfected uniformly.

  In this embodiment, the electrolyzed water containing hypochlorous acid is collected in the water tray 9 and flows into the adjacent water supply tank support tray 10. For this reason, miscellaneous bacteria do not occur in each dish, and generation of slime is prevented. For this reason, the frequency of cleaning and maintenance of each dish is reduced, and labor such as maintenance can be reduced.

In the above configuration, it is desirable to adjust the concentration of active oxygen species (hypochlorous acid) in the electrolytic water to a target concentration. The target concentration is normally set to a concentration that inactivates viruses or the like (for example, mold fungi) that are frequently present in the installation place (for example, school) of the floor-type air sanitizer 1. In this case, for example, the concentration of hypochlorous acid in the electrolytic water is adjusted by changing the current flowing through the electrodes 32 and 33 or the voltage applied between the electrodes 32 and 33. As an example, the concentration of hypochlorous acid can be changed to a high concentration by increasing the current flowing through the electrodes 32 and 33 (for example, 40 mA / cm ^{2 in} terms of current density). According to this, since it is only necessary to change the voltage applied to the electrode without using a new device or the like, cost reduction and space saving can be achieved.

As mentioned above, although this invention was demonstrated based on one Embodiment, this invention is not limited to this. For example, ozone (O ₃ ) or hydrogen peroxide (H ₂ O ₂ ) may be generated as the active oxygen species. In this case, when a platinum tantalum electrode is used as an electrode, active oxygen species can be stably generated with high efficiency by electrolysis from water having a small ion species.
At this time, in the anode electrode,
2H ₂ O → 4H ⁺ + O ₂ + 4e ⁻
At the same time as
3H ₂ O → O ₃ + 6H ⁺ + 6e ⁻
2H ₂ O → O ₃ + 4H ⁺ + 4e ⁻
This reaction occurs and ozone (O ₃ ) is generated. In the cathode electrode,
4H ⁺ + 4e ⁻ + (4OH ⁻ ) → 2H ₂ + (4OH ⁻ )
O ₂ ⁻ + e ⁻ + 2H ⁺ → H ₂ O ₂
As in, O ₂ by the electrode reaction ^- O which is produced ₂ ^- and solution H ⁺ and are bonded in the hydrogen peroxide (H ₂ O ₂₎ is generated.

In this construction, by supplying current to the electrodes, a large ozone sterilizing power (O ₃₎ and hydrogen peroxide (H ₂ O ₂₎ is generated, these ozone (O ₃₎ and hydrogen peroxide (H ₂ O ₂₎ Electrolyzed water containing can be made. The concentration of ozone or hydrogen peroxide in the electrolyzed water is adjusted to a concentration that inactivates the target virus and the like, and air is passed through the gas-liquid contact member 5 supplied with the electrolyzed water of this concentration. It is possible to inactivate floating target viruses and the like. Further, when the odor passes through the gas-liquid contact member 5, it reacts with ozone or hydrogen peroxide in the electrolytic water, and is ionized and dissolved to be removed from the air and deodorized.

When scale is deposited on the electrode (cathode) by electrolyzing tap water, the electrical conductivity is lowered, and continuous electrolysis becomes difficult.
In this case, it is effective to reverse the polarity of the electrode (switch between positive and negative of the electrode). By electrolysis using the cathode electrode as the anode electrode, the scale deposited on the cathode electrode can be removed. In this polarity reversal control, for example, it may be reversed periodically using a timer, or may be reversed irregularly, such as reversed every time the operation is started. Further, an increase in electrolytic resistance (decrease in electrolysis current or increase in electrolysis voltage) may be detected, and the polarity may be reversed based on this result.

FIG. 7 is an explanatory diagram of a modification of the first embodiment.
The modification of FIG. 7 differs from the first embodiment of FIG. 5 in that a plurality of porous ceramic precipitation promoting members 9A for promoting the precipitation of scale are provided on the upper surface side of the water tray 9. is there. Since the precipitation promoting member 9A is provided on the upper surface of the water receiving tray 9, calcium ions and magnesium ions that cause scale contained in the electrolyzed water collected in the water receiving tray 9 are electrolyzed in the adjacent water supply tank support tray 10. As water flows in, it will precipitate as scale. Therefore, the electrolytic water stored in the water supply tank support tray 10 has a reduced concentration of calcium ions and magnesium ions, and can be prevented from becoming a scale in the electrolytic cell 31.

[2] Second Embodiment Next, a second embodiment of the present invention will be described.
FIG. 8 is an explanatory diagram of air sterilization according to the second embodiment.
In FIG. 8, the same parts as those in FIG. 6 are denoted by the same reference numerals.
The second embodiment of FIG. 8 is different from the first embodiment of FIG. 6 in that an inlet pipe is connected to the electrolytic bath 31, and a first outlet pipe is located upstream of the water spray hole forming portion 17B of the electrolytic water supply pipe 17. The second outlet pipe is connected to the upstream side of the filter 41 that is connected and has the same function as the filter 20 of the first embodiment, and is switched to the second outlet pipe side (filter 41 side) at a predetermined timing for a predetermined period. The three-way valve 41 is provided.

Next, the operation of the second embodiment will be described.
In this case, in the initial state, it is assumed that the three-way valve 41 is in communication between the inlet pipe and the first outlet pipe, that is, the electrolytic tank 31 and the electrolytic water supply pipe 17 are connected.
In FIG. 1, when the operation lid 2D is opened, an operation panel (not shown) is faced. By operating this operation panel, the operation of the floor-type air sterilizer 1 is started. When this operation is started, the circulation pump 13 is driven with reference to FIG. 6, and the tap water accumulated in the water supply tank support tray 10 is supplied to the electrolytic cell 31.

  In the electrolytic bath 31, when the electrodes 32 and 33 are energized, the tap water is electrolyzed to generate electrolyzed water containing active oxygen species. The electrolyzed water passes through the three-way valve 41 and reaches the electrolyzed water supply pipe 17. Then, the water is sprayed into the watering box 5C through the watering holes 17A of the electrolyzed water supply pipe 17, and from there, it soaks into the upper edge of the gas-liquid contact member 5 and gradually gets wet toward the lower part.

  The surplus electrolyzed water is collected in the water receiving tray 9, flows down the slope of the upper surface of the water receiving tray 9, flows into the adjacent water supply tank support tray 10, and is stored there. In this configuration, when water is circulated and the amount of water is reduced by evaporation or the like, an appropriate amount of tap water is supplied to the water supply tank support tray 10 via the water supply tank 11. When the amount of water in the water supply tank 11 decreases, the opening / closing lid 2E (see FIG. 1) is opened, the water supply tank 11 is taken out, and tap water is supplied.

The air-liquid contact member 5 wetted with the electrolyzed water is supplied with room air as indicated by an arrow X through the blower fan 7. The indoor air comes into contact with the active oxygen species soaked in the gas-liquid contact member 5 and is sterilized, and then blown out into the room again.
By the way, in the second embodiment, the three-way valve 41 is switched to the second outlet pipe side, that is, the filter 40 side at a predetermined timing for a predetermined period. As a result, the electrolyzed water passes through the three-way valve 41 and the filter 40, and after the scale generated in the electrolyzer 31 is removed, the water is sprinkled into the watering box 5C through the watering holes 17A of the electrolyzed water supply pipe 17. From here, it penetrates into the upper edge of the gas-liquid contact member 5 and gradually gets wet toward the lower part.

  Therefore, in the second embodiment, when the three-way valve 41 is switched to the filter 40 side, the electrolyzed water is supplied to the gas-liquid contact member 5 after the scale generated in the electrolytic bath 31 is removed. Therefore, it is possible to reduce the situation where the scale returns to the electrolytic cell 31 again, reduce the frequency of maintenance, maintain electrolytic performance and durability even when operated for a long period of time, and maintain sterilization performance. Is possible.

  In this case, the timing for switching the three-way valve 41 to the filter 40 side can be set as appropriate. However, the timing for reversing the polarity of the electrode of the electrolytic cell 31 periodically or irregularly under a predetermined condition. Is preferable. This is because the scale is formed on the electrode on the cathode side, but by reversing the polarity, the possibility of peeling from the electrode increases. Therefore, from the timing when the polarity of the electrode of the electrolytic cell 31 is reversed, until a period corresponding to a time sufficient for the scale formed in the electrolytic cell 31 and peeled and discharged to reach the filter 40 has passed, It is desirable to switch the valve 41 to the filter 40 side.

Also in the second embodiment, the electrolyzed water passes through the three-way valve 41 and the filter 40 and is supplied to the gas-liquid contact member 5 after the scale generated in the electrolytic bath 31 is removed. The situation in which the scale returns to the tank 31 can be reduced, the frequency of maintenance can be reduced, the electrolytic performance and durability can be maintained even after long-term operation, and the sterilization performance can be maintained.
Although the three-way valve 41 is used in the above configuration, the present invention is not limited to this. Although illustration is omitted, for example, two pipes are connected to the electrolytic bath 31, and the electrolytic water supply pipe 17 is connected to one pipe via a first on-off valve, and another second pipe is connected to the other pipe. The filter 40 may be connected via an on-off valve. In this case, for example, at a predetermined timing, the first on-off valve is closed and at the same time the second on-off valve is opened, the electrolyzed water supply pipe 17 is bypassed, and the electrolyzed water is supplied to the circulation pump 13 via the filter 40. It should circulate.

  In each of the above-described embodiments, the water supply system using the water tank 11 that can be freely taken in and out is used. However, instead of this water tank 11, for example, a water pipe water supply system that directly connects city water by connecting a water pipe may be used. Not too long.

It is an appearance perspective view of the air sterilizer of an embodiment. It is a perspective view which shows an internal structure. It is a longitudinal cross-sectional view of a housing | casing. It is a front view of a gas-liquid contact member. It is a systematic diagram which shows the means to dripping electrolyzed water to a gas-liquid contact member, (A) is a side view, (B) is sectional drawing of a watering box, (C) is a block diagram of an electrolytic cell. It is explanatory drawing of the air sanitization of 1st Embodiment. It is explanatory drawing of the modification of 1st Embodiment. It is explanatory drawing of the air sanitization of 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air sanitizer 2 Case 3 Suction inlet 4 Outlet 5 Gas-liquid contact member 7 Blower fan 9 Water tray 9A Precipitation promotion member 10 Water supply tank support tray (storage part)
DESCRIPTION OF SYMBOLS 11 Water supply tank 13 Circulation pump 17 Electrolyzed water supply pipe 17A Sprinkling hole 17B Sprinkling hole formation part 20, 40 Filter 31 Electrolysis tank 32, 33 Electrode 41 Three-way valve

Claims (6)

A gas-liquid contact member that will be disposed in the housing,
An electrolyzed water supply unit for supplying electrolyzed water to the gas-liquid contact member;
A blower fan for sucking indoor air from the suction port, bringing it into contact with the electrolyzed water supplied to the gas-liquid contact member, and blowing it out from the air outlet,
A storage section for storing the electrolyzed water,
The electrolyzed water supply unit comprises an electrolyzer that electrolyzes electrolyzed water to produce the electrolyzed water, a filter for removing scales flowing out from the electrolyzer on the downstream side of the electrolyzer, and the electrolyzed water. A circulating pump for circulating, an electrolyzed water supply pipe for sprinkling the electrolyzed water, having a watering hole forming part connected to the downstream side of the electrolytic cell and having a plurality of watering holes formed, and at a predetermined timing A valve for bypassing the electrolyzed water supply pipe and circulating the electrolyzed water to the circulation pump, wherein the filter is disposed on the downstream side of the valve. . A gas-liquid contact member that will be disposed in the housing,
An electrolyzed water supply unit for supplying electrolyzed water to the gas-liquid contact member;
A blower fan for sucking indoor air from the suction port, bringing it into contact with the electrolyzed water supplied to the gas-liquid contact member, and blowing it out from the air outlet,
A storage section for storing the electrolyzed water,
The electrolyzed water supply unit comprises an electrolyzer that electrolyzes electrolyzed water to produce the electrolyzed water, a filter for removing scales flowing out from the electrolyzer on the downstream side of the electrolyzer, and the electrolyzed water. A circulating pump for circulating, an electrolyzed water supply pipe for spraying the electrolyzed water, having a watering hole forming part connected to the downstream side of the electrolyzing tank and having a plurality of watering holes formed therein; An inlet pipe is connected, a first outlet pipe is connected upstream of the sprinkling hole forming portion, a second outlet pipe is connected upstream of the filter, and the second outlet pipe is connected at a predetermined timing for a predetermined period. An air sterilizer , wherein the filter is disposed on the upstream side of the storage tank . In the air sanitizer according to claim 1 or 2 ,
Reversing the polarity of the electrode periodically or irregularly under predetermined conditions to remove the scale formed on the electrode,
The predetermined timing is the timing at which the polarity of the electrode is reversed,
An air sterilizer characterized by that. In the air sterilizer according to any one of claims 1 to 3 ,
An air sterilization apparatus, wherein the electrolyzed water is electrolyzed water containing active oxygen species obtained by energizing an electrode to electrolyze tap water. The air disinfection device according to claim 4 ,
The active oxygen species includes at least one of hypochlorous acid, ozone, and hydrogen peroxide. In the air sterilizer according to any one of claims 1 to 5 ,
The air sterilizer, wherein the electrolyzed water supply unit supplies the electrolyzed water to the gas-liquid contact member by dropping the electrolyzed water.

Images