JP4731355B2 - Air sanitizer - Google Patents

Description

  The present invention relates to an air sterilization apparatus capable of removing microorganisms floating in the air such as bacteria, viruses, and fungi (hereinafter simply referred to as viruses).

In general, for the purpose of removing viruses and the like, an air sterilization apparatus has been proposed in which electrolyzed water mist is diffused in air, the electrolyzed water mist is brought into direct contact with viruses and the like to inactivate these viruses and the like ( For example, see Patent Document 1).
JP 2002-181358 A

However, there is no problem when the above-mentioned air sanitizer is used in an environment (region, water facilities, etc.) where tap water adjusted to a stable residual chlorine concentration can be supplied, but the residual chlorine concentration in tap water is not satisfactory. In a stable environment, there has been a problem that electrolyzed water (electrolyzed water mist) that can obtain a sterilizing effect is not always obtained.
Therefore, an object of the present invention is to provide an air sterilization apparatus that can obtain electrolyzed water that can surely obtain a sterilization effect and can efficiently perform sterilization in the air.

In order to solve the above problems, the present invention provides a concentration adjusting unit for adjusting the chlorine ion concentration of the water within a predetermined chlorine ion concentration range based on the chlorine ion concentration in the supplied water, and the chlorine ion concentration An electrolyzed water generating unit that electrolyzes the water after being adjusted to generate electrolyzed water containing active oxygen species, a gas-liquid contact member that is supplied with the electrolyzed water and penetrates the electrolyzed water, and A concentration unit comprising: a blowing unit for blowing air to the gas-liquid contact member and blowing the air into the room ; a sodium chloride aqueous solution supply unit for supplying a sodium chloride aqueous solution having a predetermined concentration; and a pure water supply unit for supplying pure water. The section is characterized in that the chlorine ion concentration of the mixed liquid containing the water is adjusted within a predetermined chlorine ion concentration range by mixing the sodium chloride aqueous solution or the pure water with the water .
According to the above configuration, the concentration adjusting unit adjusts the chlorine ion concentration of the water within the predetermined chlorine ion concentration range based on the chlorine ion concentration in the supplied water.
As a result, the electrolyzed water generating unit electrolyzes the water after the chlorine ion concentration is adjusted to generate electrolyzed water containing active oxygen species, and this electrolyzed water is supplied to and permeated into the gas-liquid contact member. The
And a ventilation part blows air on a gas-liquid contact member, and blows off indoors.

Was further Nima, the pure water supply unit may be provided with a pure water generator for generating pure water from the water.
In addition, a chlorine ion concentration detection unit that detects a chlorine ion concentration in the supplied water is provided, and the concentration adjustment unit performs the concentration adjustment based on the chlorine ion concentration detected by the chlorine ion concentration detection unit. It may be.
Furthermore, the concentration adjustment may be performed based on the chlorine ion concentration of the liquid after mixing.

  ADVANTAGE OF THE INVENTION According to this invention, the electrolyzed water from which the microbe elimination effect is acquired reliably can be obtained, and the improvement of the microbe elimination efficiency of the air which passes the gas-liquid contact member which electrolyzed water penetrate | infiltrated can be aimed at.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing an embodiment of the present invention.
In FIG. 1, a floor-standing sterilization apparatus 1 includes a box-shaped casing 2, and the casing 2 includes a leg piece 2A, a front panel 2B, and a top panel 2C. On both sides, 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.
FIG. 3 is a longitudinal sectional view of the housing.
As shown in FIG. 2, two partition plates 51 and 52 extending in the vertical direction are provided inside the housing 2, and the interior of the housing 2 is divided into three parts by the partition plates 51 and 52. It is divided into chambers (sterilization chamber 60, electrical component chamber 61, water supply chamber 62). A horizontally long suction port 3 is formed in the lower part of the sterilization chamber 60 formed in the center of the housing 2, and a prefilter 3 </ b> A is disposed above the suction port 3. Above the prefilter 3 </ b> A, the blower fan 7 is supported by the partition plates 51 and 52 via the support plate 8. Above the support plate 8, the gas-liquid contact member 5 with high water retention is disposed obliquely so as to drop from the back side to the front side of the housing 2 as shown in FIG. 3. In this embodiment, the gas-liquid contact member 5 is formed in a rectangular shape, and the contact area of the gas-liquid contact member 5 is reduced by arranging the gas-liquid contact member 5 obliquely in the housing 2. Therefore, the height and depth of the housing 2 can be reduced, and the housing 2 can be downsized.

  Here, the inclination angle θ of the gas-liquid contact member 5 is desirably 30 ° or more. In the case of the inclination angle θ smaller 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 brought close to the horizontal, the blown air cannot be blown far away, and the device is not suitable for sterilizing a large space. The inclination angle θ is preferably 30 ° <θ <80 °, more preferably 55 ° <θ <75 °, and about 57 ° in this configuration.

Further, a water receiving tray 9 that receives the electrolyzed water that has passed through the gas-liquid contact member 5 is disposed between the gas-liquid contact member 5 and the blower fan 7. An outlet 4 is formed. Although not shown, an electrical component 61 such as a printed circuit board that controls the operation of the air conditioner 1 is accommodated in the electrical compartment 61 formed on the left side of the housing 2.
On the other hand, in the water supply chamber 62 formed on the right side of the housing 2, as shown in FIG. 2, the water supply tank support tray 10 for storing the electrolyzed water received by the water tray 9 and the water supply tank support tray 10 for storage. A circulating pump 13 that pumps out the electrolyzed water, an electrolysis tank 31 that electrolyzes the water pumped out by the circulating pump 13 to generate electrolyzed water, a concentration adjusting unit 90 that adjusts the chlorine ion concentration in tap water, and the like. Contained.

FIG. 4 is an explanatory view of an electrolyzed water supply mechanism for dropping electrolyzed water onto the gas-liquid contact member.
A water tray 9 is disposed below the gas-liquid contact member 5, and a water supply tank support tray 10 is connected to the water tray 9. 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. A concentration adjustment unit 90 is connected to the circulation pump 13 to adjust the chlorine ion concentration of tap water in the water supply tank support tray 10 and supply it to the electrolytic bath 31. The electrolytic water supply pipe 17 is connected to the electrolytic bath 31 via a three-way valve 35. The electrolyzed water supply pipe 17 includes a large number of water spray holes 77 formed at substantially equal intervals along the axial direction. Each of the water spray holes 77 is formed at a position corresponding to each element portion E (described later) of the gas-liquid contact member 5.

Here, the configuration of the density adjustment unit 90 will be described.
FIG. 5 is a schematic block diagram of the density adjustment unit.
The concentration adjustment unit 90 is provided on the discharge side of the circulation pump 13 and has a chlorine ion concentration (residual chlorine concentration in the tap water) of the supplied tap water W (including electrolytic water EW returned by circulation, the same applies hereinafter). The first chlorine concentration sensor 91 is detected, and the detection signal is output to the controller 92 that controls the entire concentration adjustment unit 90.
The concentration adjustment unit 90 includes a saline solution supply unit 93 that supplies saline solution (sodium chloride aqueous solution) adjusted to a predetermined concentration (for example, saturated concentration), a pure water supply unit 94 that supplies pure water, It has.

  Further, the concentration adjusting unit 90 is a mixer for uniformly mixing the salt water supplied from the salt water supply unit 93 or the pure water supplied from the pure water supply unit 94 with the tap water W supplied from the circulation pump 13. 97, a saline supply unit 93 is connected to the mixer 97 via an electric valve 95 whose opening degree can be adjusted, and a pure water supply unit 94 is connected via an electric valve 96 whose opening degree can be adjusted. Connected. Further, the mixer 97 is provided with a second chlorine concentration sensor 98 for detecting the chlorine ion concentration of the tap water W1 after mixing. The controller 92 is based on the output of the second chlorine concentration sensor 98 and is mixed with tap water. Based on the chlorine ion concentration of water W1, the opening degree of motor-operated valve 95 or motor-operated valve 96 is adjusted, and the supply amount of salt water or pure water is adjusted, and the chlorine ion concentration of tap water W1 after mixing will be described later. In the electrolytic treatment in the electric field tank 31, it is controlled so as to be in a predetermined chlorine ion concentration range that is optimized.

FIG. 6 is a diagram illustrating the configuration of the electric field tank.
As shown in FIG. 6, the electrolysis tank 31 is disposed above the water receiving tray 9 and the water supply tank support tray 10, and is sucked up from the water supply tank support tray 10 when the circulation pump 13 starts operation. When water is stored and the circulation pump 13 stops operating, the water in the electrolytic cell 31 naturally falls onto the water supply tank support tray 10 due to gravity, and the electrolytic cell 31 becomes empty.

As shown in FIG. 6, the electrolytic cell 31 is alternately provided with a pair of electrodes 32 and 33, one of which is positive and the other of which is negative, and the electrodes 32 and 33 flow into the electrolytic cell 31 when energized. The tap water W1 is electrolyzed to generate active oxygen species. Here, the reactive 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 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), and the current value flowing through the electrodes 32 and 33 is several in terms of current density. It is set to be mA (milliampere) / cm ² (square centimeter) to several tens of mA / cm ² to generate a predetermined free chloride ion concentration (for example, 1 mg (milligram) / l (liter)).

More specifically, 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.
Therefore, by supplying electricity to the electrodes 32 and 33, HClO (hypochlorous acid) having a high sterilizing power is generated, and by passing air through the gas-liquid contact member 5 supplied with this hypochlorous acid, It is possible to prevent germs from growing on the gas-liquid contact member 5 and to inactivate viruses floating in the air passing through the gas-liquid contact member 5. Further, when the odor in the air also passes through the gas-liquid contact member 5, it reacts with hypochlorous acid and is ionized and dissolved, so that the air is deodorized.

Next, the gas-liquid contact member 5 will be described.
FIG. 7 is an external perspective view of the gas-liquid contact member.
As shown in FIG. 7, the gas-liquid contact member 5 includes a plurality of (five in the present embodiment) element portions E that permeate electrolytic water and allow air to pass through, and a frame portion F that supports these element portions E, It is configured with. The frame portion F includes a lower frame 71, a pair of vertical frames 72 and 73 fixed to both ends of the lower frame 71, and an upper end of the other vertical frame 73 penetrating through the upper portion of one vertical frame 72. And an upper frame (watering part) 74 fixed between the upper ends of the pair of vertical frames 72 and 73 so as to cover the electrolytic water supply pipe 17. That is, the electrolyzed water supply pipe 17 is inserted into an upper frame (watering part) 74 formed along the longitudinal direction of the gas-liquid contact member 5.

FIG. 8 is a cross-sectional view of the gas-liquid contact member.
As shown in FIG. 8, the upper frame 74 is formed in a substantially U-shaped cross section having an upper plate 74A, a front plate 74B, and a back plate 74C. On the inner surfaces of the front plate 74B and the back plate 74C, A pair of support members 75, 75 extending substantially parallel to the upper plate 74A are formed. Between these support members 75, 75, a first flow dividing sheet 76 disposed below the electrolyzed water supply pipe 17 is inserted and supported. The first diverting sheet 76 diffuses the electrolyzed water dropped from a large number of water spray holes 77 formed in the electrolyzed water supply pipe 17 over the entire first diverting sheet 76, so that the first diverting sheet 76 is formed on the upper surface of the element portion E. Electrolytic water can be supplied uniformly.
A pair of guide pieces 79A and 79B extending substantially parallel to the front plate 74B and the back plate 74C are formed on the inner surface of the upper plate 74A. Further, on the lower surface of the lower frame 71, a drain port 71 </ b> A that discharges excess electrolyzed water dropped on the element portion E to the water receiving tray 9 is formed.

FIG. 9 is an enlarged explanatory view of the element portion.
As shown in FIG. 9, the element portion E is configured by laminating a corrugated plate member 81 and a flat plate member 82, and is disposed at both ends of the laminated corrugated member 81 and the flat plate member 82. A pair of frame members 83 constituting a vertical frame of the element portion are arranged. The frame member 83 is formed of a resin such as plastic, and by disposing the frame member 83 at both ends of the laminated corrugated plate member 81 and the flat plate member 82, the element portion E can be easily handled. Become. Further, the element portion E is formed by laminating the corrugated plate member 81 and the flat plate member 82, thereby forming a large number of substantially triangular openings 85 between the corrugated plate member 81 and the flat plate member 82. Is widely secured, electrolyzed water can be dripped, and it is difficult to clog.
Each element part E is arranged side by side between the vertical frames 72 and 73 of the frame part F. On the upper surface (upper edge part) of these element parts E, a plurality of second flow dividing sheets 84 are respectively arranged. Yes. The second diversion sheet 84 diffuses the electrolyzed water supplied to the upper surface of each element portion E through the first diversion sheet 76 over the entire upper surface of the element portion E.

  In the present embodiment, the second branch sheet 84 includes three branch sheets (an upper branch sheet 84A, a middle branch sheet 84B, and a lower branch sheet 84C). The middle diversion sheet 84B and the lower diversion sheet 84C are set to be substantially the same as the lengths of the laminated corrugated plate member 81 and flat plate member 82 in the width direction. The upper flow dividing sheet 84A includes a base portion 84A1 having substantially the same length as the middle flow dividing sheet 84B and the lower flow dividing sheet 84C, and bent portions 84A2 provided at both ends of the base portion 84A1, and these bent portions. 84A2 is inserted into an insertion port 83A formed in the frame member 83, so that the three flow dividing sheets 84A to 84C can be stacked and attached to the upper surface of the element portion E.

  The corrugated plate material 81, the flat plate material 82, the first flow dividing sheet 76, and the second flow dividing sheet 84 have a liquid permeability and are less deteriorated by electrolyzed water, such as polyolefin resins (polyethylene resin, polypropylene resin). Etc.), PET (polyethylene terephthalate) resin, vinyl chloride resin, fluorine resin (PTFE, PFA, ETFE, etc.) or ceramic material, etc., and in this configuration, PET resin is used. In addition, since electrolyzed water exhibits antifungal properties, it is not necessary to apply an antifungal agent to the gas-liquid contact member 5.

Next, the watering hole 77 formed in the electrolyzed water supply pipe 17A will be described.
As described above, the gas-liquid contact member 5 is formed in a rectangular shape and is disposed obliquely in the housing 2. For this reason, when the electrolyzed water is simply dropped, the electrolyzed water concentrates on the lower portion 76B of the first fractionating sheet 76, so that the electrolyzed water permeates into the back side of the element portion E. It is conceivable that the electrolyzed water hardly permeates into the front side of E, and as a result, the electrolyzed water cannot be uniformly permeated into the element portion E, so that a sufficient sterilizing effect cannot be obtained.

For this reason, in this embodiment, in order to supply the electrolyzed water uniformly to the entire surface of the first fractionating sheet 76, the electrolyzed water supply pipe 17A has water spray holes 77 extending substantially laterally toward the front side of the housing 2. Is formed. In this specification, the substantially horizontal direction includes not only the horizontal direction but also an angle at which the electrolyzed water can be supplied uniformly to the upper surface of the first fractionating sheet 76 or the element portion E.
Specifically, as shown in FIG. 6, the water spray hole 77 is formed at a position facing a guide piece (inner wall) 79 </ b> A formed on the front plate 74 </ b> B side of the upper frame 74, and the gas-liquid contact member 5. When the inclination angle is θ (degrees), the water spray hole 77 is formed at a position where the elevation angle with respect to the horizontal plane is 90−θ (degrees). Further, the water spray holes 77 are formed on a substantially straight line at every predetermined interval in the axial direction of the electrolyzed water supply pipe 17.

  According to this configuration, the electrolyzed water discharged from the water spray hole 77 of the electrolyzed water supply pipe 17 hits the guide piece 79 </ b> A formed on the inner surface of the upper frame 74 and is dropped onto the upper portion 76 </ b> A side of the first fractionating sheet 76. The The dropped electrolyzed water permeates the entire first diversion sheet 76 by moving from the upper part 76A side to the lower part 76B side of the first distillation sheet 76 using the inclination of the first distillation sheet 76. Then spread. The electrolyzed water is dropped on the second flow dividing sheet 84, diffuses throughout the second flow dividing sheet 84, penetrates the entire upper portion of the element portion E, and penetrates downward along the inclination of the gas-liquid contact member 5. To go.

For this reason, electrolyzed water can be uniformly permeated into the entire gas-liquid contact member 5, whereby germs can be prevented from growing in the gas-liquid contact member 5, and the air passing through the gas-liquid contact member 5 can be prevented. It can inactivate floating viruses.
Further, the total water spray amount corresponding to the hole diameter from the water spray hole 77 is set to be smaller than the discharge amount of the circulation pump 13. For this reason, the electrolyzed water pressure in the electrolyzed water supply pipe 17 is increased, and the electrolyzed water is supplied all the way to the sprinkling holes 77 at the end, whereby the electrolyzed water reaches every corner in the longitudinal direction of the gas-liquid contact member 5. Can penetrate evenly.

Next, the operation | movement at the time of the air sterilization of the floor-standing type air sterilizer 1 is demonstrated.
In FIG. 1, when the operation lid 2D is opened, an operation panel (not shown) is provided on the inner side, and the operation of the floor-standing air sterilizer 1 is started by operating this operation panel. When this operation is started, the circulation pump 13 is driven, and the tap water W in the water supply tank support tray 10 is supplied to the mixer 98.
At this time, the concentration adjustment unit 90 controller 92 detects the chlorine ion concentration in the tap water W based on the detection signal output from the first chlorine concentration sensor 91, and the chlorine ion concentration is optimal in the electrolytic treatment in the electric field tank 31. If it is within the predetermined chlorine ion concentration range, tap water W is supplied to the electric field tank 31 as it is.

On the other hand, when the chlorine ion concentration is outside the predetermined chlorine ion concentration range that is optimal for the electrolytic treatment in the electric field tank 31, the controller 92 determines the supply amount of saline or pure water to be mixed with the tap water W. calculate.
More specifically, when the chlorine ion concentration in the tap water W is low, the amount of saline supplied from the saline supply unit 93 to be mixed with the tap water W is calculated, and conversely the chlorine in the tap water W When the ion concentration is high, the amount of pure water supplied from the pure water supply unit 94 to be mixed with the tap water W is calculated to dilute the tap water W.
Next, the controller 92 adjusts the opening degree of the motor-operated valve 95 or the motor-operated valve 96 based on the calculation result, and supplies saline or pure water to the mixer 97.
In parallel with this, the controller 92 finely adjusts the opening degree of the motor-operated valve 95 or the motor-operated valve 96 based on the chlorine ion concentration of the tap water W1 after mixing based on the output of the second chlorine concentration sensor 98, and performs mixing. The mixed tap water W1 is supplied to the electric field tank 31 as a predetermined chlorine ion concentration range in which the chlorine ion concentration of the subsequent tap water W1 is optimized in the electrolytic treatment in the electric field tank 31.
In parallel with the adjustment of the chlorine ion concentration, the electrolytic cell 31 is driven, and the supplied mixed tap water W1 is electrolyzed by energizing the electrodes 32 and 33 to generate electrolyzed water EW containing active oxygen species. Is done.

The electrolyzed water EW is discharged from the water spray hole 77 (see FIG. 8) of the electrolyzed water supply pipe 17, hits the guide piece 79 formed on the upper frame 74, and is dropped onto the first flow dividing sheet 76. As a result, the electrolyzed water diffuses throughout the first diverted sheet 76, and the electrolyzed water falls onto the second diverted sheet 84. The dropped electrolyzed water penetrates into the second diverted sheet 84, diffuses throughout the second diverted sheet 84, and supplies electrolyzed water to the entire upper part of the element part E. The corrugated plate material 81 and the flat plate material 82 penetrate into every corner.
The electrolyzed water EW dropped from the gas-liquid contact member 5 is discharged to the water receiving tray 9 through the drain port 71A (see FIG. 8) formed in the lower frame 71, and the water receiving tray 9 has a downward gradient inside the water supply tank support tray 10. Flows into and is stored there. In this configuration, the water is circulating, and when the amount of water is reduced by evaporation or the like, an appropriate amount of tap water in the water supply tank 11 is supplied to the water supply tank support tray 10. The water supply tank 11 is disposed so that it can be taken out by opening the opening / closing lid 2E (see FIG. 1), and the water supply tank 11 can be taken out to supply tap water.

  The air-liquid contact member 5 into which the electrolyzed water EW has permeated is supplied with indoor air via the blower fan 7. The indoor air comes into contact with the active oxygen species soaked in the element part E of the gas-liquid contact member 5 and is blown out again into the room. 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 floats in the indoor air. Influenza virus and the receptor (receptor) necessary for the virus to become infected do not bind, thereby preventing infection. As a result of the verification test, it was found that 99% or more of the virus can be removed when the air in which the influenza virus is suspended is passed through the gas-liquid contact member 5 having this configuration.

  As described above, according to the present embodiment, when supplying tap water to the electric field tank 31, the concentration adjustment unit 90 makes the chlorine ion concentration in the tap water optimal for the electrolytic treatment in the electric field tank 31. Therefore, it is possible to obtain electrolyzed water with the optimum concentration of reactive oxygen species, more reliably sterilizing viruses that are floating in the air, and more hygienic. Environment can be constructed.

  Further, according to the present embodiment, the rectangular gas-liquid contact member 5 is disposed obliquely in the housing 2, and the upper surface of the element portion E of the gas-liquid contact member 5 is passed through the electrolyzed water supply pipe 17 from above. The electrolyzed water is dropped, and air is blown into the element part E into which the electrolyzed water has permeated and blown into the room, and the electrolyzed water supply pipe 17 has the electrolyzed water substantially uniformly on the upper surface of the element part E. Since the substantially horizontal water spray hole 77 is formed so that the water can be supplied, the electrolyzed water discharged from the water spray hole 77 is supplied almost uniformly to the upper surface of the element part E, so that the entire element part E is electrolyzed almost uniformly. Can penetrate water. Therefore, when air is allowed to pass through the element portion E, the air and the electrolyzed water are more likely to come into contact with each other, so that the sterilization efficiency of the air passing through the element portion E can be improved.

  Further, according to the present embodiment, the electrolyzed water supply pipe 17 is inserted into the upper frame 74 formed along the longitudinal direction of the gas-liquid contact member 5, and the water spray holes 77 are formed as guide pieces 79 of the upper frame 74. Therefore, the electrolyzed water hitting the guide piece 79 is dropped onto the upper portion 76 </ b> A side of the first fractionating sheet 76. For this reason, the electrolyzed water is diffused throughout the first diverted sheet 76 and dropped onto the second diverted sheet 84, diffused throughout the second diverted sheet 84, penetrates the entire upper surface of the element portion E, and is in gas-liquid contact. It penetrates downward along the inclination of the member 5. For this reason, electrolyzed water can permeate | transmit substantially uniformly to the said element part E whole, and the improvement of the sterilization efficiency of the air which passes the said element part E can be aimed at.

  Moreover, according to this embodiment, since the water spray holes 77 are formed at substantially equal intervals along the axial direction of the electrolyzed water supply pipe 17, the electrolyzed water dropped from the water spray holes 77 is supplied with the electrolyzed water. The electrolytic water can be diffused substantially uniformly in the longitudinal direction of the first flow dividing sheet 76 by being dropped onto the first flow dividing sheet 76 disposed in the pipe 17 and permeating the first flow dividing sheet 76. . For this reason, since electrolyzed water is supplied to the upper surface part of the element part E of the gas-liquid contact member 5 substantially equally, electrolyzed water can be permeate | transmitted to this whole element part E, Therefore, the said element part E is made to penetrate. It is possible to improve the sterilization efficiency of the passing air.

As mentioned above, although this invention was demonstrated based on one Embodiment, this invention is not limited to this.
In the above description, the chlorine ion concentration of the tap water W in the water supply tank support tray 10 is adjusted, and the pure water supply unit 94 is configured to supply the pure water stored in advance. A modification in the case of adjusting the chlorine ion concentration of tap water in the water supply tank 11 and adjusting the chlorine ion concentration using pure water generated from tap water in the water supply tank 11 will be described.
FIG. 10 is a schematic configuration block diagram of a density adjustment unit of a modification.
The modified concentration adjustment unit 90A includes a first chlorine concentration sensor 101 that is provided on the tap water supply port side of the water supply tank 11 and detects the chlorine ion concentration of the supplied tap water W2, and the detection signal is a concentration adjustment. It is output to the controller 102 that controls the entire unit 90A.
Further, the concentration adjustment unit 90A generates pure water by ion exchange or the like from the supplied salt water supply unit 103 for supplying saline adjusted to a predetermined concentration (for example, saturated concentration) and the supplied tap water W2, And a pure water generation and supply unit 104 for supply.

Further, the concentration adjustment unit 90A is for uniformly mixing the saline supplied from the saline supply unit 103 or the pure water supplied from the pure water generation supply unit 104 with the tap water W2 supplied from the water supply tank 11. A mixer 105 is provided, and the water supply tank 11 is connected to the mixer 105 via an electric valve 106 whose opening degree can be adjusted, and a saline solution supply unit 103 is connected via an electric valve 107 whose opening degree can be adjusted. The pure water supply unit 104 is connected via a motor-operated valve 108 whose opening degree can be adjusted. Further, the mixer 105 is provided with a second chlorine concentration sensor 109 for detecting the chlorine ion concentration of the tap water W1 after mixing. The controller 102 is based on the output of the second chlorine concentration sensor 109 and after mixing. Based on the chlorine ion concentration of the water W3, the opening degree of the motor-operated valve 106, motor-operated valve 107 or motor-operated valve 108 is adjusted, and the supply amount of tap water W1, saline or pure water is adjusted, and the tap water after mixing is adjusted. In the electrolytic treatment in the electric field tank 31, the chlorine ion concentration of W2 is controlled to be within a predetermined chlorine ion concentration range that is optimum.
Although the above configuration does not include a pump, the saline solution supply unit 103, the pure water generation supply unit 104, or the mixer 105 is appropriately provided with a pump.
Next, an outline operation of the modification will be described.
When the operation of the floor-standing air sanitizer 1 is started, tap water W2 in the water supply tank 11 is supplied to the pure water generation and supply unit 104, and the pure water generation and supply unit 104 is supplied from the supplied tap water W2. Pure water is produced by ion exchange.

At this time, the controller 102 of the concentration adjustment unit 90A once opens the motor-operated valve 106, supplies the tap water W2 to the mixer 105 side, and tap water W2 based on the detection signal output from the first chlorine concentration sensor 101. When the chlorine ion concentration is within a predetermined chlorine ion concentration range that is optimal for the electrolytic treatment in the electric field tank 31, tap water W is supplied to the electric field tank 31 as it is.
On the other hand, when the chlorine ion concentration is outside the predetermined chlorine ion concentration range that is optimal for the electrolytic treatment in the electric field tank 31, the controller 102 closes the motor-operated valve 101 and the saline solution to be mixed with the tap water W or Calculate the amount of pure water supplied.
More specifically, when the chlorine ion concentration in the tap water W2 is low, the amount of saline supplied from the saline supply unit 103 to be mixed with the tap water W2 is calculated, and conversely the chlorine in the tap water W2 When the ion concentration is high, the amount of pure water to be mixed with the tap water W2 to be diluted with the tap water W2 is calculated to dilute the tap water W2.

Next, the controller 102 adjusts the opening degree of the motor-operated valve 106, the motor-operated valve 107, or the motor-operated valve 108 based on the calculation result, and supplies saline or pure water to the mixer 105.
In parallel with this, the controller 102 finely adjusts the opening degree of the motor-operated valve 106, the motor-operated valve 107, or the motor-operated valve 108 based on the chlorine ion concentration of the tap water W3 after mixing based on the output of the second chlorine concentration sensor 109. After mixing, the mixed tap water W3 is supplied to the electric field tank 31 so that the chlorine ion concentration of the mixed tap water W3 is optimized in the electrolytic treatment in the electric field tank 31.
As a result, the electrolytic cell 31 is driven, and the supplied mixed tap water W2 is electrolyzed by energization of the electrodes 32 and 33 to generate electrolytic water EW containing active oxygen species. Similar processing is performed.
According to this modification, in addition to the effects of the above-described embodiment, it is not necessary to supply pure water, and the maintainability is further improved.

In the above description, hypochlorous acid has been described as an example of the active oxygen species. 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
Thus, O ₂ ⁻ produced by the electrode reaction and H ⁺ in the solution are combined to produce hydrogen peroxide (H ₂ O ₂ ).

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.

By the way, 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.

In the above embodiment, the water supply system using the water supply / removal tank 11 that can be freely taken in and out is used. However, instead of the water supply tank 11, for example, a water pipe supply system that directly connects city water by connecting a water pipe may be used. Nor.
Moreover, in the above embodiment and modification, the case where tap water is supplied from the water supply tank 11 and the water pipe water supply system that directly leads city water as water supplied to the device has been described. Is not necessarily tap water, but can be applied to industrial water without adding chlorine for disinfection, well water, water obtained from soft water purifiers, water through purifiers, and other water as well. Is possible.

It is a perspective view which shows one Embodiment of this invention. It is a perspective view which shows an internal structure. It is a longitudinal cross-sectional view of a housing | casing. It is explanatory drawing of the electrolyzed water supply mechanism which dripping electrolyzed water to a gas-liquid contact member. It is a schematic block diagram of a density adjustment unit. It is composition explanatory drawing of an electric field tank. It is an external appearance perspective view of a gas-liquid contact member. It is sectional drawing of a gas-liquid contact member. It is expansion explanatory drawing of an element part. It is a general | schematic block diagram of the density | concentration adjustment unit of a modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Floor-standing sanitizer 4A Mist spray port 5 Gas-liquid contact member 7 Blower (blower part)
17A, 17B Electrolyzed water supply pipe 31 Electrolytic tank (electrolyzed water generator)
35 Three-way valve 77 Sprinkling hole 90, 90A Concentration adjustment unit 91, 101 First chlorine concentration sensor 92, 102 Controller 93, 103 Saline solution supply unit 94 Pure water supply unit 95, 96, 106, 107, 108 Motorized valve 97, 105 Mixer 98, 109 Second chlorine concentration sensor 104 Pure water generation supply unit E Element part F Frame part

Claims (4)

A concentration adjusting unit that adjusts the chlorine ion concentration of the water within a predetermined chlorine ion concentration range based on the chlorine ion concentration in the supplied water;
An electrolyzed water generating unit that electrolyzes the water after the chlorine ion concentration is adjusted to generate electrolyzed water containing active oxygen species;
A gas-liquid contact member through which the electrolyzed water is supplied and into which the electrolyzed water is permeated; a blower that blows air into the gas-liquid contact member and blows it into the room; and a sodium chloride aqueous solution that supplies a sodium chloride aqueous solution having a predetermined concentration A supply unit, and a pure water supply unit for supplying pure water,
The concentration adjusting unit adjusts the chlorine ion concentration of the mixed liquid containing the water within a predetermined chlorine ion concentration range by mixing the sodium chloride aqueous solution or the pure water with the water. Air sterilization device. In the air sterilizer according to claim 1 ,
The pure water supply unit includes a pure water generation unit that generates pure water from the water. In the air sterilizer according to claim 1 or 2 ,
A chlorine ion concentration detector that detects the chlorine ion concentration in the supplied water
The said concentration adjustment part performs the said density | concentration adjustment based on the chlorine ion concentration which the said chlorine ion concentration detection part detected, The air disinfection apparatus characterized by the above-mentioned. The air filtering apparatus according to any one of claims 1 to 3,
An air sterilization apparatus that performs the concentration adjustment based on a chlorine ion concentration of the liquid after mixing.

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