JP2008109980A - Air disinfecting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air disinfecting device, capable of almost uniformly feeding electrolyzed water along the length of a gas-liquid contact member. <P>SOLUTION: The air disinfecting device comprises a device main body including the gas-liquid contact member 53 to put electrolyzed water in contact with air, and an electrolyzed water supply part to supply the electrolyzed water to the gas-liquid contact member 53, so that air in the room is sucked from a suction port of the device main body to get in contact with the electrolyzed water to be disinfected, and blown out from a blow port of the device main body to the room. Electrolyzed water supplied from the electrolyzed water supply part is stored in a storage part 53 surrounded by a storage wall 52B, and a water dripping tray 51 having a plurality of water dripping holes 59 to let the stored electrolyzed water drip to the gas-liquid contact member 53 formed on the storage wall 52B of the storage part 52 or a bottom part 52A roughly at the same height position is provided above the gas-liquid contact member 53. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an air sterilization apparatus capable of sterilizing airborne microorganisms (bacteria, viruses, fungi (hereinafter simply referred to as “viruses”)) contained in air by bringing air into contact with electrolyzed water. .

In general, for the purpose of sterilization of viruses floating in the air, tap water is electrolyzed, and electrolyzed water containing active oxygen species such as hypochlorous acid is supplied to the gas-liquid contact member. There has been proposed an air sterilization apparatus that sterilizes air by bringing virus or the like into contact with electrolyzed water supplied to a liquid contact member to inactivate the virus or the like (see, for example, Patent Document 1).
JP 2002-181358 A

However, in the conventional air sterilization apparatus, the supply pipe for supplying the electrolyzed water is directly connected to the gas-liquid contact member, and the supply amount of the electrolyzed water to the gas-liquid contact member is connected to the supply pipe. However, when the connecting portion is provided at one end in the width direction of the wide gas-liquid contact member, the closer to the other end, the closer to the other end. There has been a problem that the amount of electrolyzed water supplied decreases, and electrolyzed water is supplied non-uniformly along the longitudinal direction of the gas-liquid contact member.
The present invention has been made in view of the above-described circumstances, and an object thereof is to provide an air sterilization apparatus that can supply electrolytic water substantially uniformly along the longitudinal direction of a gas-liquid contact member.

  The present invention has a gas-liquid contact member for bringing electrolyzed water and air into contact with each other, and an electrolyzed water supply unit for supplying the electrolyzed water to the gas-liquid contact member, which is built into the apparatus main body, Is supplied from an electrolyzed water supply unit in an air sterilization apparatus that circulates the gas-liquid contact member and contacts the electrolyzed water to sterilize and blows it into the room from the outlet of the apparatus main body. The storage wall of the storage part has the plurality of water spray holes for storing the electrolytic water in the storage part whose outer periphery is surrounded by the storage wall and dropping the stored electrolytic water on the gas-liquid contact member at substantially the same height position. Or the watering tray formed in the bottom part was provided above the said gas-liquid contact member, It is characterized by the above-mentioned.

  In this case, the plurality of watering holes may be formed at substantially equal intervals. The watering tray is extended along the upper part of the gas-liquid contact member to approximately the same size as the gas-liquid contact member, and the center of the direction in which the watering tray extends extends from the electrolyzed water supply unit. You may provide the inflow part into which the electrolyzed water flows. The gas-liquid contact member is provided in a horizontally long shape, the watering tray is provided so as to extend in substantially the same dimension as the longitudinal direction of the gas-liquid contact member, and the inflow portion is the center in the longitudinal direction of the gas-liquid contact member Or you may arrange | position to the said watering tray in the position corresponding to center vicinity. In a state where the level of the electrolyzed water stored in the reservoir is higher than the water spray holes, the total flow rate of the electrolyzed water flowing through the water spray holes is substantially equal to the flow rate of the electrolyzed water flowing from the inflow part. You may form the said watering hole in the position and magnitude | size used as the same flow volume.

  According to the present invention, there is provided a watering tray for storing electrolyzed water flowing from an inflow portion disposed in the center along the extending direction, and dropping the stored electrolyzed water onto a gas-liquid contact member. Since the plurality of water spray holes are formed in the tray at substantially equal intervals along the extending direction, the electrolyzed water can be supplied substantially uniformly along the longitudinal direction of the gas-liquid contact member.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an external perspective view of an air sterilization apparatus 1 according to an embodiment to which the present invention is applied.
As shown in FIG. 1, the air sterilizer 1 has a box-shaped housing (device main body) 11 formed in a vertically long shape, and is installed on the floor, for example. A suction grill 12 is formed in the lower portion of both side surfaces of the casing 11, and a suction port 15 is formed in the lower end portion of the front surface of the casing 11.
An air outlet 13 is formed on the upper surface of the housing 11, and the air outlet 13 is provided with a louver 20 for changing the direction in which air is blown out. The louver 20 is configured to close the outlet 13 when operation is stopped.
The air sterilizer 1 sucks and sterilizes the air in the installation room through the suction grill 12 and the suction port 15, and exhausts the sterilized air from the air outlet 13 to clean the room air. Device.

On the upper surface of the housing 11, an operation lid 16A disposed on the front surface side of the air outlet 13 and a tank opening / closing lid 14A disposed side by side on the operation lid 16A are formed. When the operation lid 16A is opened, the operation panel 16 (FIG. 2) for performing various operations of the air sterilization apparatus 1 is exposed, and when the tank opening / closing lid 14A is opened, a water supply tank 41 (to be described later) via the tank outlet 14 ( Figure 2) can be taken in and out.
Grip portions 17 are formed on the upper portions of both side surfaces of the housing 11. These gripping portions 17 are concave portions for holding the case 11 by hand, and the air sterilizer 1 can be lifted and moved by one person during transportation.
On the front surface of the housing 11, an upper panel 18 and a lower panel 19 arranged in the vertical direction are detachably disposed. The lower panel 19 includes an arc portion 19A that is curved toward the back side of the housing 11 at the lower end portion of the lower panel 19, and the suction port 15 is formed in the arc portion 19A.

Next, the internal structure of the air sterilizer 1 will be described.
As shown in FIG. 2, the housing 11 is provided with a support plate 21 that divides the interior of the housing 11 into upper and lower portions, and is divided into an upper chamber 22 and a lower chamber 23. In the lower chamber 23, a blower fan 31 and a fan motor 32 are disposed, and a drain tank 57, which will be described later, is accommodated through the partition plate 24 so as to be drawn out to the front side. That is, the blower fan 31, the fan motor 32, and the drainage tank 57 are arranged side by side.
A pre-filter 34 is disposed on the front side of the lower chamber 23, that is, on the upstream side of the blower fan 31. The pre-filter 34 collects a large particle size such as dust in the air sucked through the suction grill 12 and the suction port 15, and passes through the first filter 25, for example, a particle size of 10 (Μm) and a second filter 26 that collects the above objects. Pollen and dust floating in the air are removed by the prefilter 34, and the removed air is supplied to the upper chamber 22 through the blower fan 31.

  On the other hand, in the upper chamber 22, an electrical box 39 is disposed above the blower fan 31 and the fan motor 32, and a gas-liquid contact member 53 is disposed above the electrical box 39. Between the gas-liquid contact member 53 and the electrical equipment box 39, a water tray 42 for receiving water dripped from the gas-liquid contact member 53 is disposed. The water receiving tray 42 includes a storage portion 42 </ b> A formed at a deep bottom, and the storage portion 42 </ b> A extends above the drainage tank 57. In the electrical box 39, various electrical components such as a control board on which various devices constituting a control unit (not shown) for controlling the air sterilizer 1 are mounted, and a power supply circuit for supplying a power supply voltage to the fan motor 32 are provided. Contained.

A water supply tank 41 is disposed on the storage part 42A, and water can be supplied from the water supply tank 41 to the storage part 42A. Specifically, the water supply port formed at the lower end of the water supply tank 41 is provided with a float valve. When the water level of the storage portion 42A is lower than the water supply port, the float valve is opened, whereby the water supply tank 41 is opened. Thus, a necessary amount of water is supplied, and the water level of the reservoir 42A is kept constant.
As shown in FIG. 3, an electrolyzed water supply unit (electrolyzed water supply unit) 45 that supplies electrolyzed water to the gas-liquid contact member 53 is disposed on the reservoir 42 </ b> A. The electrolyzed water supply unit 45 includes a circulation pump 44 and an electrolytic bath 46, and the circulation pump 44 operates so that the circulation amount can be changed by changing the number of rotations according to the control of the control unit. A supply pipe 71 is connected to the discharge port of the circulation pump 44. The supply pipe 71 is connected to the gas-liquid contact member 53 via a supply tube 75 that is flexible and can be freely bent. The circulation pump 44 pumps up the electrolyzed water stored in the storage unit 42 </ b> A, and supplies the pumped electrolyzed water to the gas-liquid contact member 53 through the supply pipe 71 and the supply tube 75.
An electrolytic cell 46 is connected to the supply pipe 71 via a branch pipe 72 that branches between the circulation pump 44 and the supply tube 75. As will be described later, the electrolytic bath 46 includes a plurality of electrodes, and a voltage supplied from the control unit is applied between the electrodes to electrolyze water to generate electrolyzed water. A discharge port 46A for discharging the electrolyzed water generated in the electrolyzer 46 is formed on the upper surface of the electrolyzer 46, and a return pipe 73 for returning the electrolyzed water to the storage part 42A is connected to the discharge port 46A. .

Inside the reservoir 42A, a sponge-like filter member 74 that collects solid matter mixed in the electrolyzed water flowing into the reservoir 42A is disposed at the inlet of the reservoir 42A. In this configuration, the outlet of the return pipe 73 is disposed above the filter member 74. Thereby, the solid matter discharged from the electrolytic bath 46 together with the electrolyzed water (for example, a scale component formed on the electrode surface) is dropped from the outlet of the return pipe 73 onto the filter member 74 and collected by the filter member 74. It has become so.
The electrolyzed water dropped from the gas-liquid contact member 53 onto the water receiving tray 42 collects solid matter mixed in the electrolyzed water by the filter member 74 and flows into the reservoir 42A. The solid matter contained in the electrolyzed water circulating through the water receiving tray 42 through the gas-liquid contact member 53 and the electrolyzed water supply unit 45 is collected by the filter member 74, so that the solid matter is collected in the gas-liquid contact member 53. The clogging of the gas-liquid contact member 53 caused by the inflow is prevented.
Since the upper portion of the storage portion 42A in which the filter member 74 is disposed is open, the replacement time of the filter member 74 can be easily determined visually. Further, when the filter member 74 is replaced, the filter member 74 disposed at the inlet portion of the storage portion 42A may be removed and replaced with fingers, so that maintenance can be easily performed without using a tool or the like. it can.

  In the present embodiment, the electrolyzed water stored in the water receiving tray 42 is configured to be appropriately discharged. Specifically, a drain pipe 55 (FIG. 8A) is connected to the lower portion of the storage section 42A, and a drain valve 56 (FIG. 8A) for opening and closing the drain pipe 55 is provided. . The tip of the drainage pipe 55 extends above the drainage tank 57, and the drainage valve 56 is opened so that the electrolyzed water on the water receiving tray 42 is discharged to the drainage tank 57.

  The gas-liquid contact member 53 is a filter member having a honeycomb structure. Specifically, the gas-liquid contact member 53 has a structure in which an element portion that contacts gas is supported by a frame. The element portion is configured by laminating a corrugated plate member and a flat plate member, and a plurality of substantially triangular openings are formed between the corrugated member and the flat plate member. Accordingly, a wide gas contact area is ensured when air is passed through the element portion, electrolyzed water can be dripped, and clogging is difficult.

The gas-liquid contact member 53 is provided with a flow dividing sheet 65 (FIG. 6) in order to efficiently disperse the electrolyzed water dropped from the watering tray 51 assembled on the upper part to the element part. The diversion sheet is a sheet (woven fabric, non-woven fabric, or the like) made of a fiber material having liquid permeability, and one or more are provided along the cross section in the thickness direction of the gas-liquid contact member 53.
Here, each part (including the frame, the element part, and the flow dividing sheet) of the gas-liquid contact member 53 is made of a material that is hardly deteriorated by electrolyzed water, such as polyolefin resin (polyethylene resin, polypropylene resin, etc.), PET (polyethylene). -Materials such as terephthalate) resin, vinyl chloride resin, fluorine resin (PTFE, PFA, ETFE, etc.) or ceramic material are used. In this configuration, PET resin is used.

  Each part of the gas-liquid contact member 53 is subjected to a hydrophilic treatment to enhance the affinity for the electrolyzed water, whereby the water retention (wetability) of the electrolyzed water of the gas-liquid contact member 53 is maintained, which will be described later. The contact between the active oxygen species (active oxygen substance) and the room air is maintained for a long time. Furthermore, since electrolyzed water having fungicidal action is dripped onto the gas-liquid contact member 53, it is possible to propagate the mold without taking anti-fungal measures (such as application of fungicides) on the gas-liquid contact member 53. Can be avoided.

4 is a cross-sectional view showing the watering tray assembled to the gas-liquid contact member, FIG. 5 is a vertical cross-sectional view showing the watering tray assembled to the gas-liquid contact member, and FIG. 6 is a watering tray. It is a perspective view of a diversion sheet.
On the upper part of the gas-liquid contact member 53, as shown in FIG. 4, a watering tray 51 for dispersing electrolyzed water uniformly on the gas-liquid contact member 53 is assembled via a flow dividing sheet 65. The watering tray 51 includes a storage unit 52 that temporarily stores electrolyzed water, and a case unit 54 that covers the storage unit 52. The width W1 of the water spray tray 51 is formed to be substantially the same as the width W2 (dimension in the longitudinal direction X) of the gas-liquid contact member 53.

  As shown in FIG. 5, the case portion 54 is formed in a convex shape in a side view as the depth dimension of the case upper portion 54 </ b> A and the case lower portion 54 </ b> B changes stepwise at substantially the center in the height direction. The depth dimension of the case lower part 54B is enlarged so that the upper ends of the flow dividing sheet 65 and the gas-liquid contact member 53 can be inserted from below. As a result, the diversion sheet 65 inserted inside the case portion 54 is assembled in contact with the lower surface 54C formed at the lower end of the case upper portion 54A. The case portion 54 extends along the longitudinal direction X (FIG. 3) of the gas-liquid contact member 53 that is provided horizontally, and the lower end surface is open.

  As shown in FIG. 6, the upper surface plate 61 forming the upper end surface of the case portion 54 is located near the center of the upper surface plate 61, that is, between the extending direction Z and the direction Y in which air flows through the gas-liquid contact member 53. An inflow portion 58 is disposed at the center or near the center. The inflow portion 58 is a pipe that communicates the upper side and the lower side of the upper surface plate 61 of the case portion 54, and protrudes above the case portion 54. An elbow 76 (FIG. 3) formed of an L-shaped tube for connection to the supply tube 75 (FIG. 3) is attached to the inflow portion 58, and the electrolyzed water discharged from the circulation pump 44 flows into the inflow portion 58. And supplied to the storage unit 52.

Reservoir 52 has a box shape as a whole, and includes a bottom surface (bottom) 52A formed at the bottom, and a wall extending upward from the entire outer periphery of bottom surface 52A to form a tray with bottom surface 52A. Part (storage wall) 52B and a contact part 63 protruding downward from the lower surface 52C of the bottom surface part 52A.
The storage portion 52 includes ten abutting portions 63 having a plate shape that protrudes downward and has a lower end formed substantially in parallel with the bottom surface portion 52A. It is formed in series with the interval. The height dimension of the storage part 52 formed by combining the contact part 63 and the wall part 52B is substantially the same as the height dimension from the back surface 61A of the upper surface plate 61 of the case part 54 to the lower surface 54C of the case upper part 54A. Is formed. Thereby, the lower end 63A of the contact portion 63 and the lower surface of the bottom surface portion 52A are formed at substantially the same height, and the lower end of the contact portion 63 when the flow dividing sheet 65 is assembled in the watering tray 51. 63A comes into contact with the flow dividing sheet 65.
The storage part 52 is incorporated inside the case upper part 54A of the case part 54, and is integrated with the case part 54 via two screws 62, 62 penetrating the storage part 52 from below as shown in FIG. Fixed.

  As shown in FIG. 5, the wall 52 </ b> B formed along the extending direction Z is formed with a gap A between the wall 54 </ b> D and the wall 54 </ b> D of the case upper part 54 </ b> A of the case 54. Has been. Twelve sprinkling holes 59 for dropping electrolyzed water onto the flow dividing sheet 65 are formed in the lower part of the wall portion 52B formed along the extending direction Z. It is provided to drop through A. Each of the six water spray holes 59 is formed at substantially equal intervals along the extending direction Z, and each water spray hole 59 is formed at substantially the same height. As a result, when the water level of the electrolyzed water is substantially at the same height as the water spray holes 59, the electrolyzed water of substantially the same flow rate overflows and drops from the water spray holes 59. When the height is higher than the height position, the electrolyzed water is dripped by the water pressure of substantially the same size. For this reason, in any case, since the flow rate of the electrolyzed water dropped from each sprinkling hole 59 is substantially the same, the electrolyzed water is supplied uniformly to the flow dividing sheet 65 and the gas-liquid contact member 53. It has become. The inside of the storage part 52 is closed so that only the inflow part 58 and the water spray hole 59 communicate with the outside while being fixed integrally with the case part 54.

The sprinkling holes 59 are such that the total flow rate of the electrolyzed water flowing through the plurality of sprinkling holes 59 is equal to the flow rate of the electrolyzed water flowing from the inflow portion 58 in a state where the level of the electrolyzed water is between the sprinkling holes 59 and the upper surface plate 61. It is formed at a position and size where the flow rate is substantially the same. Thus, when the electrolytic water flows into the storage portion 52 where the electrolytic water is not stored, the level of the electrolytic water rises until reaching a state between the water spray hole 59 and the upper surface plate 61, and the water level state When it reaches, the rise in water level is suppressed.
As described above, the water spray tray 51 stores the electrolytic water supplied from the circulation pump 44 in the storage unit 52, and maintains the storage amount of the electrolytic water in the storage unit 52 while evacuating the stored electrolytic water by a certain amount. The liquid contact member 53 is dropped.

Next, with reference to FIG. 7, the air flow of the air sterilizer 1 will be described.
As described above, the blower fan 31 is provided in the lower chamber 23 of the housing 11. As shown in FIG. 7, the blower port 31 </ b> A of the blower fan 31 is provided upward in the rear side portion of the housing 11, and the support plate 21 is provided with an opening at a position overlapping the blower port 31 </ b> A. The opening of the support plate 21 communicates with a space 1 </ b> A that extends vertically on the back side of the upper chamber 22. For this reason, the air blown from the blower port 31A of the blower fan 31 passes through the space 1A as shown by an arrow in FIG. 7 and is blown to the back surface of the gas-liquid contact member 53.

In this configuration, the space 1 </ b> A includes a first air guide member 81 disposed on the back side of the housing 11. On the upper part of the first air guide member 81, a flow dividing plate 82 is disposed, and the air flowing through the space 1A can be uniformly blown to the back surface of the gas-liquid contact member 53.
In addition, a second air guide member 83 that guides the air that has passed through the gas-liquid contact member 53 to the air outlet 13 is disposed in the space 1 </ b> B on the front surface side of the housing 11 via the gas-liquid contact member 53. . The second air guide member 83 has a function of guiding the air in the space 1B to the outlet 13 and a function of receiving the electrolyzed water (so-called jump water) blown from the gas-liquid contact member 53 into the space 1B together with the air. Have. Specifically, the second air guide member 83 has a bottom surface 83A inside the second air guide member 83 formed in a downward slope toward the gas-liquid contact member 53, and the tip of the bottom surface 83A is water. It extends above the saucer 42. For this reason, the electrolyzed water blown into the space 1 </ b> B is returned to the water receiving tray 42 through the bottom surface 83 </ b> A inside the second air guide member 83.

  The air that has passed through the gas-liquid contact member 53 is exhausted through the air outlet filter 36 that is guided to the second air guide member 83 and disposed below the air outlet 13. The air outlet filter 36 is a filter for preventing entry of foreign matter from the air outlet 13 into the housing 11. The blower outlet filter 36 includes a net, a woven fabric, a nonwoven fabric, or the like (not shown). As these materials, a synthetic resin, preferably a material constituting the gas-liquid contact member 53 is preferable. The air outlet filter 36 is preferably moderately coarse so as not to remarkably increase the airflow resistance of the air that has passed through the gas-liquid contact member 53.

FIG. 8 is a diagram for explaining the state of supply of electrolyzed water, FIG. 8 (A) is a schematic diagram showing the configuration of the air sterilization mechanism, and FIG. 8 (B) shows the configuration of the electrolytic cell 46 in detail. FIG.
With reference to this FIG. 8, the supply of the electrolyzed water with respect to the gas-liquid contact member 53 is demonstrated. In the present embodiment, a case where tap water is put into the water supply tank 41 and the air sterilizer 1 is operated will be described.

  When the water supply tank 41 containing the tap water is set in the air sterilizer 1, the tap water is supplied from the water supply tank 41 to the water tray 42 as described above, and the water level of the water tray 42 reaches a predetermined level. . The water in the water receiving tray 42 is pumped up by the circulation pump 44 and a part thereof is supplied to the electrolytic cell 46. As shown in FIG. 8B, the electrolytic cell 46 includes a pair of electrodes 47 and 48, one of which is positive and the other is negative. By applying a voltage between these electrodes 47 and 48, The flowing tap water is electrolyzed to generate electrolyzed water containing active oxygen species. Here, the active oxygen species are oxygen having higher oxidation activity than normal oxygen and related substances, such as superoxide anion, singlet oxygen, hydroxyl radical, or hydrogen peroxide, in a narrow sense. The active oxygen includes so-called broad active oxygen such as ozone and hypohalous acid.

The electrodes 47 and 48 are, for example, electrode plates in which the base is made of titanium (Ti) and the coating layer is made of iridium (Ir) and platinum (Pt). It is set to be in the range of mA (milliampere) / cm ² (square centimeter) to several tens of mA / cm ² to generate a predetermined free residual chlorine concentration (for example, 1 mg (milligram) / l (liter)).

Specifically, when the tap water is energized by the electrodes 47 and 48, 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
Chloride ion contained in water (Cl ^-: those previously added in tap water),
2Cl ⁻ → Cl ₂ + 2e ⁻
As a result, chlorine (Cl ₂ ) is generated. Furthermore, this chlorine reacts with water,
Cl ₂ + H ₂ O → HClO + HCl
Hypochlorous acid (HClO) and hydrogen chloride (HCl) are generated.

  Hypochlorous acid generated at the anode electrode is contained in a broad sense of active oxygen species and has a strong oxidizing action and bleaching action. The aqueous solution in which hypochlorous acid is dissolved, that is, the electrolyzed water generated by the air sterilizer 1 exhibits various air cleaning effects such as inactivation of viruses, sterilization, and decomposition of organic compounds. In this way, when electrolyzed water containing hypochlorous acid is dropped from the water spray tray 51 onto the flow dividing sheet 65 and supplied to the gas-liquid contact member 53, the air blown out by the blower fan 31 is generated in the gas-liquid contact member 53. Contact with hypochlorous acid. As a result, viruses or the like floating in the air are inactivated, and odorous substances contained in the air react with hypochlorous acid to be decomposed or ionized and dissolved. Accordingly, the air is sterilized and deodorized, and the purified air is discharged from the gas-liquid contact member 53.

  An example of influenza virus is given as an action mechanism for inactivating viruses and the like by reactive oxygen species. The above-mentioned reactive oxygen species have the action of destroying and eliminating (removing) the surface protein (spike) of influenza virus, which is essential for influenza infection. When this surface protein is destroyed, the influenza virus and a receptor (receptor) necessary for the infection of the influenza virus are not bound, and the infection is prevented. For this reason, the influenza virus floating in the air loses infectivity by contacting the electrolyzed water containing the active oxygen species in the gas-liquid contact member 53, so that the infection is prevented.

  Therefore, even when this air sterilization apparatus 1 is installed in a so-called large space such as a kindergarten, elementary / middle / high school, a nursing care insurance facility, a hospital, etc., it is cleaned with sterilized water (disinfection, deodorization). Etc.) can be spread widely in the large space, and air sterilization and deodorization in the large space can be performed efficiently.

  Also, the electrolyzed water dropped from the water spray tray 51 onto the flow dividing sheet 65 and supplied to the gas-liquid contact member 53 moves downward through the gas-liquid contact member 53 and falls to the water tray 42. The electrolyzed water that has fallen in the water receiving tray 42 is again pumped up by the circulation pump 44 and supplied to the gas-liquid contact member 53 through the electrolytic bath 46. As described above, in the configuration of the present embodiment, the electrolyzed water is a circulation type, and by effectively using a small amount of water, air can be sterilized efficiently over a long period of time. Further, when the amount of water circulating through the electrolyzed water circulation unit 2 is reduced due to evaporation or the like, an appropriate amount of water in the water supply tank 41 is supplied to the water receiving tray 42.

  As described above, according to the present embodiment, the electrolyzed water flowing from the inflow portion 58 disposed in the center or in the vicinity of the center along the extending direction Z is stored in the storage portion 52 and stored. A watering tray 51 for dropping electrolyzed water onto the flow dividing sheet 65 and supplying it to the gas-liquid contact member 53 is provided, and the watering tray 51 has a plurality of watering holes 59 formed at substantially equal intervals along the extending direction Z. Has been. Thereby, after the electrolyzed water which flowed in from the center or the center vicinity along the extension direction Z of the water spray tray 51 is temporarily stored by the storage part 52, it is applied to the gas-liquid contact member 53 along the extension direction Z. Are dripped at approximately equal intervals. For this reason, electrolyzed water can be supplied substantially uniformly along the longitudinal direction X of the gas-liquid contact member 53.

  At this time, even when the water spray tray 51 is tilted from the horizontal plane by the electrolytic water being temporarily stored in the storage portion 52, the water level of the electrolytic water stored in the storage portion 52 is formed by the water spray holes 59. If the water spray tray 51 is tilted from the horizontal plane, the electrolyzed water can be supplied substantially uniformly along the longitudinal direction X of the gas-liquid contact member as long as the water spray tray 51 is inclined from the horizontal plane.

  Further, according to the present embodiment, the inflow portion 58 is disposed symmetrically at the center of the upper surface plate 61 of the case portion 54 or in the vicinity of the center. Thereby, when incorporating the watering tray 51 in the air sterilization apparatus 1, it can be integrated without minding the front and back of the watering tray 51. For this reason, the assembly of the air sterilization apparatus 1 can be facilitated. Further, since the inflow portion 58 is disposed at or near the center of the upper surface plate 61 of the case portion 54, when the inflow portion 58 is disposed at either one of the left end or the right end of the case portion 54, The problem that it is difficult to supply electrolyzed water can be avoided.

  Further, according to the present embodiment, the water spray holes 59 are formed in such a manner that the level of the electrolyzed water stored in the storage section is between the water spray holes and the upper part of the water spray tray. The total flow rate of the flowing electrolyzed water is formed at a position and a size that are substantially the same as the flow rate of the electrolyzed water flowing from the inflow portion 58. Thereby, when there is little quantity of the electrolyzed water stored in the storage part 52, the water level of the storage part 52 rises, the water level of the storage part 52 rises, and the water pressure in the water spray hole 59 rises. For this reason, the total flow rate of the electrolyzed water flowing through the sprinkling holes 59 is balanced at a water level that is substantially the same as the flow rate of the electrolyzed water flowing from the inflow portion 58, and a substantially constant water level can be maintained.

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 air is passed through the gas-liquid contact member 53 to which the electrolyzed water of this concentration is supplied. It is possible to inactivate floating target viruses and the like. Further, when the odor passes through the gas-liquid contact member 53, it reacts with ozone or hydrogen peroxide in the electrolytic water, and is ionized and dissolved to be removed from the air and deodorized.

  In the above embodiment, the watering tray 51 drops electrolyzed water onto the flow dividing sheet 65 and supplies it to the gas-liquid contact member 53, but is not limited thereto, and electrolyzed water is directly dropped onto the gas-liquid contact member 53. May be supplied.

  Moreover, in the said embodiment, although the water spray hole 59 is formed in the lower part of the wall part 52B of the storage part 52, it is not limited to this, If electrolyzed water can be supplied to the gas-liquid contact member 53 substantially uniformly. Alternatively, it may be formed on the bottom part of the storage part.

1 is a perspective view showing an air sterilization apparatus according to an embodiment of the present invention. It is a perspective view which shows the internal structure of an air sanitizer. It is an assembly perspective view which shows an electrolyzed water supply unit. It is a cross-sectional view which shows a watering tray. It is a longitudinal cross-sectional view which shows a watering tray. It is a perspective view which shows a watering tray and a diversion sheet. It is sectional drawing which shows an air sanitizer. (A) It is a systematic diagram which shows an air sanitizer. (B) It is a perspective view which shows an electrolytic cell.

Explanation of symbols

1 Air disinfection device 11 Device body (housing)
13 Air outlet 15 Air inlet 45 Electrolyzed water supply unit (electrolyzed water supply unit)
51 Watering tray 52 Reservoir 52A Bottom (bottom)
52B wall (storage wall)
53 Gas-liquid contact member 58 Inflow part 59 Sprinkling hole

Claims (5)

A gas-liquid contact member that makes contact between the electrolyzed water and air and an electrolyzed water supply unit that supplies the electrolyzed water to the gas-liquid contact member are built in the apparatus main body, and indoor air is sucked from the suction port of the apparatus main body. In the air sterilization apparatus that circulates through the gas-liquid contact member and contacts the electrolyzed water to sterilize, and blows out into the room from the outlet of the apparatus body,
A plurality of sprinkling holes for storing the electrolyzed water supplied from the electrolyzed water supply part in a storage part whose outer periphery is surrounded by a storage wall and dropping the stored electrolyzed water on the gas-liquid contact member are at substantially the same height positions. An air sterilization apparatus comprising a watering tray formed on the storage wall or bottom of the storage section above the gas-liquid contact member. In the air sterilizer according to claim 1,
An air sterilizing apparatus, wherein the plurality of water spray holes are formed at substantially equal intervals. In the air sanitizer according to claim 1 or 2,
The watering tray is extended along the upper part of the gas-liquid contact member to approximately the same size as the gas-liquid contact member, and the center of the direction in which the watering tray extends extends from the electrolyzed water supply unit. An air sterilization apparatus comprising an inflow portion through which the electrolyzed water flows. In the air sterilizer according to any one of claims 1 to 3,
The gas-liquid contact member is provided in a horizontally long shape, the watering tray is provided so as to extend in substantially the same dimension as the longitudinal direction of the gas-liquid contact member, and the inflow portion is the center in the longitudinal direction of the gas-liquid contact member Or it arrange | positions in the said watering tray in the position corresponding to center vicinity, The air disinfection apparatus characterized by the above-mentioned. In the air sanitization device according to any one of claims 1 to 4,
In a state where the level of the electrolyzed water stored in the reservoir is higher than the water spray holes, the total flow rate of the electrolyzed water flowing through the water spray holes is substantially equal to the flow rate of the electrolyzed water flowing from the inflow part. An air sterilization apparatus, wherein the water spray holes are formed at the same position and size.

Images