JP2008029574A - Air disinfecting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the frequency of supplying water and to perform continuous operations even in the air disinfecting apparatus of a tank type. <P>SOLUTION: The air disinfecting apparatus comprises: an electrolyzer 31 for generating electrolytic water by electrolyzing electrolysis object water which is water or water containing chlorine ions; a gas/liquid contact member 5 where the electrolytic water generated by the electrolyzer 31 is dripped; a blowing fan 7 for blowing indoor air to the gas/liquid contact member 5; a first water supply tank 11 having a first capacity for storing the electrolysis object water to supply it; a second water supply tank 53 having a second capacity larger than the first capacity for storing the electrolysis object water to supply it; a storage tray 10 for storing the electrolysis object water from the first water supply tank 11 and the second water supply tank 53; a water supply pump 60 for supplying the electrolysis object water inside the second water supply tank 53 to the storage tray 10; and a circulation pump 13 for supplying the electrolysis object water in the storage tray 10 to the electrolyzer 31. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an air sterilization apparatus capable of removing airborne microorganisms (hereinafter simply referred to as “virus etc.”) such as bacteria, viruses and fungi.

In general, for the purpose of removing viruses and the like, a sterilization apparatus has been proposed that infuses electrolyzed water mist in the air, directly contacts the electrolyzed water mist with viruses and the like, and inactivates viruses and the like (for example, Patent Document 1).
However, the conventional sterilization apparatus is effective in a use environment where fine particulate electrolyzed water mist easily reaches, that is, in a use environment where electrolyzed water mist is difficult to reach while being effective in a relatively small space, ie, large There is a problem that it is difficult to exert its effect in a space such as a kindergarten, elementary, middle, and high school, a nursing care insurance facility, a hospital, and the like.

In order to solve this problem, a gas-liquid contact member having water retention capacity is provided in one casing, and electrolyzed water obtained by electrolyzing tap water is dropped on the gas-liquid contact member while blowing air such as a sirocco fan. The applicant has proposed an air sterilization apparatus that blows room air to a gas-liquid contact member with a fan to detoxify viruses and allergens contained in air in a large space.
JP 2002-181358 A

In the air sterilization apparatus, air sterilization is performed using electrolyzed water. However, when a configuration in which the water to be electrolyzed is stored and supplied to the tank is used, when the capacity of the tank is small, electrolysis by the user There was a problem that the supply frequency of the target water was increased and it took time and effort.
Further, when the air sterilization apparatus is continuously operated as in a store or the like, if the frequency of raising and lowering is high, the operation suspension period becomes long and the problem of poor usability arises.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an air sterilization device that can reduce the frequency of water supply and enable continuous operation even with a tank-type air sterilization device.

  In order to solve the above-mentioned problems, an electrolysis unit that electrolyzes water to be electrolyzed, which is water or water containing chlorine ions, generates electrolyzed water, and a gas-liquid contact member to which electrolyzed water generated by the electrolysis unit is dropped A blower fan that blows indoor air to the gas-liquid contact member, a first water supply tank having a first capacity for storing the water to be electrolyzed, and a water supply for supplying the water to be electrolyzed A second water supply tank having a second capacity larger than the first capacity; a storage section for storing the water to be electrolyzed from the first water supply tank and the second water supply tank; It has the 1st pump which supplies the said electrolysis target water to the said storage part, and the 2nd pump which supplies the said electrolysis target water of the said storage part to the said electrolysis unit, It is characterized by the above-mentioned.

According to the above configuration, the storage unit stores the electrolysis target water supplied from the first water supply tank and the electrolysis target water supplied from the second supply water tank via the first pump.
Thereby, a 2nd pump supplies the electrolysis object water of a storage part to an electrolysis unit.
The electrolysis unit electrolyzes the supplied water to be electrolyzed to generate electrolyzed water.
When electrolyzed water generated by the electrolysis unit is dropped on the gas-liquid contact member, indoor air is blown to the gas-liquid contact member by a blower fan to perform air sterilization.
In this case, since the capacity of the second water supply tank is large, it is possible to reduce the frequency of supply of the water to be electrolyzed by the user, and even when supplying the air, the air sterilizer is connected to the first water supply tank. Continuous operation can be performed with water to be electrolyzed.
In this case, a predetermined second water level that is provided in the storage unit and in which the water level of the electrolysis target water in the storage unit is higher than a predetermined first water level that requires water supply to the second water supply tank. A water level sensor that detects that the level has dropped, and a control that drives the first pump based on the detection state of the water level sensor to supply the water to be electrolyzed in the second water supply tank to the reservoir. May be provided.

A second water level sensor that is provided in the storage unit and detects that the water level of the electrolysis target water in the storage unit has fallen below the first water level; and a detection state of the second sensor. And a notification unit that notifies a user of water supply to the second water supply tank.
Further, the water to be electrolyzed in the second water supply tank may be supplied as cleaning water by the first pump when water is exchanged in the reservoir.

  According to the present invention, even with a tank-type air sterilizer, the frequency of water supply is reduced and continuous operation is possible.

Preferred embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view of an air sterilization system according to an embodiment.
FIG. 2 is a perspective view showing an internal configuration of the air sterilization system.
As shown in FIG. 1, the air sterilization system X is roughly divided into an air sterilization apparatus main body 1, and a tank unit 51 that stores the air sterilization apparatus main body 1 to supply electrolyzed water to the air sterilization apparatus main body 1. It is equipped with.

The air sterilization apparatus main body 1 includes a box-shaped casing 2, which includes a frame 20 formed in a substantially frame shape and a front panel 2 </ b> A attached to the frame 20, as shown in FIG. 2. The rear panel 2B, a pair of left and right side panels 2C, a top panel 2D, and a pair of left and right legs 2E. On both sides of the top panel 2D, an operation lid 2F and an opening / closing lid 2G are arranged to be openable and closable. .
The tank unit 51 includes a box-shaped casing 52. The casing 52 includes a front door panel 52A that can be opened and closed, a rear panel 52B, a pair of left and right side panels 52C, a top panel 52D, and legs 52E. In addition, a second water supply tank 53 capable of storing, for example, 20 liters of water to be electrolyzed is disposed inside the casing 52, and the water to be electrolyzed in the second water supply tank 53 is sterilized by air in the second water supply tank 53. A water supply pipe 54 to be supplied to the apparatus main body 1 side is connected. In addition, the 2nd water supply tank 53 can replenish electrolysis object water by opening and removing 53 A of opening-and-closing lid | covers.

Next, a more detailed internal configuration will be described.
As shown in FIG. 2, two partition plates 21, 22 that vertically partition the inside of the housing 2 are disposed on the frame 20 of the air sterilization apparatus main body 1 at an interval, and these partition plates 21, 22 divides the internal space of the housing 2 into three chambers A, B, and C.
In the center chamber A, the suction panel 3, the support plate 8 of the blower fan 7, the water tray 9, the gas-liquid contact member 5 and the blowout panel 4 are disposed in this order from the bottom.

Further, in the chamber B on one end side, a storage tray 10 connected to the water tray 9, a circulation pump 13 for pumping water (electrolyzed water) stored in the storage tray 10, and a discharge side of the circulation pump 13 A connected electrolysis tank 31 and a water supply pipe 54 are connected, and a water supply pump 60 that supplies water to be electrolyzed in the second water supply tank 53 to the storage tray 10 is disposed.
Further, in the chamber C on the other end side, a control board (not shown) constituting the control unit 100 that controls the entire air sterilizer main body 1 including the electrolytic bath 31 is disposed.
The suction panel 3 is disposed substantially horizontally with a space from the floor surface, and a prefilter 3A is disposed on the upper surface thereof. The support plate 8 sucks outside air through the suction panel 3 and supports the support plate. A blower fan 7 for blowing air upward is attached.

FIG. 3 is a longitudinal sectional view of the air sterilizer main body.
As shown in FIG. 3, the air blowing port 7A of the air blowing fan 7 is provided near the rear panel 2B, and the support plate 8 is provided with a support frame 8A extending substantially upward while avoiding the air blowing port 7A. The gas-liquid contact member 5 is attached to the support frame 8A obliquely with the back face thereof directed toward the air blowing port 7A, and the water tray 9 is attached immediately below the lower edge of the gas-liquid contact member 5. Yes. The blowout panel 4 is disposed so as to cover the entire upper portion of the chamber A, and is provided with rectifying fins that rectify the air that has been blown from the blower fan 7 and has passed through the gas-liquid contact member 5 with an interval.

The blower fan 7 includes a sirocco fan inside the case, and is configured to be able to change the blown air volume (wind speed) via an inverter or the like under the control of the control unit 100. Specifically, the wind speed can be changed in two stages, “strong” (for example, average air volume: 8 m ³ / min) and wind speed “weak” (for example, average wind speed: 5 m ³ / min).

Here, the gas-liquid contact member will be described.
FIG. 4 is a diagram illustrating the configuration of the gas-liquid contact member.
As shown in FIG. 4, the gas-liquid contact member 5 includes an element part E through which air flows and a frame part F that supports the element part E. The element portion E is configured by laminating a corrugated plate member 5A and a flat plate member 5B, and a plurality of substantially triangular openings 5F are provided between the corrugated member 5A and the flat plate member 5B. It is formed, has a structure in which a gas contact area is widely secured, electrolytic water can be dripped, and clogging is difficult.

  More specifically, the frame portion F has a pair of left and right frame members 5D constituting both end frames of the gas-liquid contact member 5 and an upper end of one of the left and right frame members 5D to the other frame member 5D. And a cover 5G that is disposed between the upper end portions of the pair of left and right frame members 5D so as to cover the electrolytic water supply tube 17 and constitutes the upper frame of the gas-liquid contact member 5; The cover 5G supports the first flow dividing sheet 5C disposed below the electrolyzed water supply pipe 17. The element portion E is disposed between the pair of left and right frame members 5D. On the upper surface of the element portion E, a plurality of second flow dividing sheets 5E are disposed.

  The corrugated plate member 5A, the flat plate member 5B, the first flow-dividing sheet 5C and the second flow-dividing sheet 5E are fiber materials having liquid permeability and less deteriorated by electrolyzed water, such as polyolefin resin (polyethylene). Resin, polypropylene resin, etc.), PET (polyethylene terephthalate) resin, vinyl chloride resin, fluorine resin (PTFE, PFA, ETFE, etc.) or ceramic materials are used. In this configuration, PET resin is used. ing.

Electrolyzed water generated in the electrolytic bath 31 is supplied to the electrolyzed water supply pipe 17, and this electrolyzed water has a plurality of water spray holes (not shown) formed at intervals in the axial direction of the electrolyzed water supply pipe 17. To the first diversion sheet 5C, diffuses to the entire first diversion sheet 5C, drops to the second diversion sheet 5E, diffuses to the entire second diversion sheet 5E, and permeates the entire upper portion of the element portion E. Then, it penetrates downward along the inclination of the gas-liquid contact member 5. That is, the electrolyzed water can be uniformly permeated to every corner in the longitudinal direction of the gas-liquid contact member 5 by the flow dividing sheets 5C and 5E.
Furthermore, the total watering amount corresponding to the hole diameter from a large number of watering holes 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 at the end, and this also causes the electrolyzed water to reach every corner in the longitudinal direction of the gas-liquid contact member 5. Can penetrate evenly.

The inclination angle θ of the gas-liquid contact member 5 shown in FIG.
It is desirable that 30 ° <θ <80 °.
This is due to the following reasons.
This is because when the inclination angle θ is 30 ° or less, the dropped electrolyzed water does not flow along the inclination of the gas-liquid contact member 5 and falls downward. Further, when the inclination angle θ is 80 ° or more and approaches 90 °, the air blowing path passing through the gas-liquid contact member 5 becomes nearly horizontal, and it is difficult to blow upward. This is because when the 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.
In the present embodiment, the angle is set to about 57 °.

As shown in FIG. 2, the storage tray 10 disposed in the chamber C is provided at a position one step lower than the water tray 9 and stores water (electrolyzed water) flowing from the water tray 9, and the first water tank. A support portion 10 </ b> A that supports the support 11 is integrally formed.
As will be described later, when there is sufficient water to be electrolyzed (water or water containing chlorine ions, for example, tap water) in the second water supply tank 53, the water supply pump 60 supplies a water supply pipe to the storage tray 10. The water to be electrolyzed is supplied to the storage tray 10 via 54.
In addition, when the electrolysis target water is exhausted in the second water supply tank 53, the water in the first water supply tank 11 is automatically supplied to the storage tray 10 by gravity. Here, in the first water supply tank 11, tap water which is water containing chlorine ions is stored as water to be electrolyzed.
The electrolysis tank 31 functions as an electrolysis unit that generates electrolyzed water, is connected to a pipe 25 extending upward from the discharge port of the circulation pump 13, and is disposed at a position higher than the circulation pump 13.

FIG. 5 is an explanatory diagram of the internal configuration of the electrolytic cell.
As shown in FIG. 5, the electrolytic cell 31 includes a plurality of electrodes 32 and 33, and the tap water supplied to the electrolytic cell 31 is supplied by energizing the electrodes 32 and 33 under the control of the control unit 100. Electrolyzed to produce active oxygen species. And the electrolyzed water containing this active oxygen species is supplied to the electrolyzed water supply pipe 17 of the gas-liquid contact member 5 through the pipe 26 shown in FIG. Note that the piping 26 may also be used by connecting the electrolytic water supply pipe 17 directly to the electrolytic bath 31.

  Here, active oxygen species are molecules having higher oxidative 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. As shown in FIG. 2, the electrolytic cell 31 is arranged close to the gas-liquid contact member 5, and therefore, the electrolytic water generated in the electrolytic cell 31 can be immediately supplied to the gas-liquid contact member 5. Has been.

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 supplied to the electrodes 32 and 33 is the current density. It is set to be several 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)).

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 ⁻
At the same time, the chlorine ions contained in the water (usually contained in tap water in advance, but if the water is insufficient in chlorine, add sodium chloride etc. to the water to be electrolyzed. But)
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 supplied with the hypochlorous acid. 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.

FIG. 6 is a schematic diagram for explaining the configuration of the air sterilization apparatus.
As shown in FIG. 6, the control unit 100 includes a microcomputer 100A and a memory 100B, and the microcomputer 100A executes a control program stored in the memory 100B, thereby centrally controlling each unit of the air sterilizer main body 1. To do.
An operation panel 101, a notification panel 102, a first float switch FS 1, a second float switch FS 2, and an inverter circuit 105 are connected to the control unit 100.

  The operation panel 101 is provided at a position that is exposed when the operation lid 2F is opened. In this configuration, a remote control unit including various operation elements such as an operation start button and an air volume change button and a display panel is applied. In addition to notifying the control unit 100 of various instructions, various information can be displayed. The notification panel 102 is provided on the front panel 2A, and includes an operation lamp 102A that indicates whether or not the vehicle is in operation, a water supply lamp 102B that notifies a water supply request of the first water supply tank 11, and the like, as shown in FIG.

Here, the first float switch FS1 and the second float switch FS2 will be described in detail.
FIG. 7 is an explanatory diagram of the water level in the storage dish and the output state of each float switch.
As shown in FIG. 7, the first float switch FS1 is provided at a position that is turned off at the first water level L1 for turning on the water supply lamp 102B and turned on at the third water level L3.
The second float switch FS2 is higher than the first water level L1, lower than the third water level L3, and is turned off at the second water level L2, which is a water level that supplies water to be electrolyzed from the second water supply tank 53 via the water supply pump. It is provided at a position that is higher than the third water level L3 and is turned on at the fourth water level L4, which is a water level that stops the supply of water to be electrolyzed from the second water supply tank 53 via the water supply pump (water supply stop).

As a result, the control unit 100 controls lighting of the water supply lamp 102B of the notification panel 102 and controls driving / stopping of the water supply pump.
The blower fan 7 is connected to the inverter circuit 105, and the power supply frequency supplied to the blower fan 7 is changed according to the airflow change instruction of the user, and the blowout airflow of the blower fan 7 is changed.
With this configuration, when the operation panel 101 is operated and an operation is instructed, the control unit 100 turns on the operation lamp 102A and drives the circulation pump 13 to electrolyze water to be electrolyzed stored in the storage tray 10. It supplies to the tank 31, and electrolysis water is electrolyzed in the electrolytic tank 31, and the electrolyzed water containing an active oxygen species is produced | generated.

The electrolyzed water is dropped by the circulation pump 13 via the pipe 26 and the electrolyzed water supply pipe 17 into the gas-liquid contact member 5 and gradually permeates. And the electrolyzed water dripped from the gas-liquid contact member 5 is received by the water receiving tray 9, flows into the storage tray 10 from the water receiving tray 9, and is stored there. Thus, in this configuration, the water to be electrolyzed is a circulation type, and when the amount of water is reduced by evaporation or the like, when there is sufficient water to be electrolyzed in the second water supply tank 53, the water supply pipe 54 is The water supply pump 60 supplies the water to the storage tray 10 until the water level L4 is reached.
Further, when the amount of electrolysis target water in the second water supply tank 53 decreases or disappears, an appropriate amount of electrolysis target water in the first water supply tank 11 is supplied to the storage tray 10. The first water supply tank 11 can be replenished with water to be electrolyzed by opening and closing the opening / closing lid 2G (see FIG. 1).

The air-liquid contact member 5 into which the electrolytic water has permeated is supplied with indoor air as indicated by an arrow Y through the blower fan 7. The indoor air comes into contact with the active oxygen species soaked in the gas-liquid contact member 5 or passes through the vicinity thereof and is blown out into the room again.
This reactive oxygen species has the function of suppressing allergens such as viruses, pollen, mite fungus, and carcasses. For example, when influenza virus floats in the air, the surface protein (spike) of the virus is essential for infection. ) Is destroyed, disappeared (removed) and destroyed, the influenza virus and the receptor (receptor) necessary to infect the virus are not bound, thereby preventing the infection. As a result of the verification test, it has been 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.

Next, the operation of the embodiment will be described.
FIG. 8 is an operation flowchart during installation (and normal operation).
In this case, it is assumed that the first water supply tank 11 and the second water supply tank 53 contain a full amount of water to be electrolyzed.
At the time of installation, when the power switch is turned on (step S1), the control unit 100 starts driving the water supply pump 60 (step S2) and supplies it to the storage tray 10 via the water supply pipe 54, and the second float. It is determined whether or not the switch FS2 has been turned on, that is, whether or not the water level in the storage tray 10 has reached the water level L4 (step S3).

If it is determined in step S3 that the water level in the storage tray 10 has not yet reached the water level L4 (step S3; No), the control unit 100 shifts the process to step S2 and continues to drive the feed pump 60. It will be.
In the determination of step S3, when the water level in the storage tray 10 reaches the water level L4 (step S3; Yes), the control unit 100 shifts to the normal operation mode and drives the circulation pump 13 (step S4). .
Subsequently, the control unit 100 stops the water supply pump 60 (step S5), whether or not the second float switch FS2 is turned off, that is, the water level in the storage tray 10 reaches the water level L2, and starts water supply. It is determined whether or not it is necessary to do this (step S6).
If it is determined in step S6 that the water level in the storage tray 10 has not yet reached the water level L4 (step S6; No), the control unit 100 proceeds to step S5 and continues the stopped state of the water supply pump 60. Will be.

In the determination in step S6, when the water level in the storage tray 10 reaches the water level L2 (step S6; Yes), the control unit 100 drives the water supply pump 60 (step S7), and the second float switch FS2 is activated. It is determined whether or not it has been turned on, that is, whether or not the water level in the storage tray 10 has reached the water level L4 (step S8).
If it is determined in step S8 that the water level in the storage tray 10 has not yet reached the water level L4 (step S8; No), the control unit 100 proceeds to step S7 and continues to drive the feed pump 60. It will be.
In the determination of step S8, when the water level in the storage tray 10 reaches the water level L4 (step S3; Yes), the control unit 100 stops the water supply pump 60 again (step S5), and the same processing is performed hereinafter. Will be performed.

FIG. 9 is an operation flowchart in the case where the second float switch is turned off when the second water supply tank runs out of water.
During the operation of the water supply pump 60 (step S11), the control unit 100 empties the second water supply tank 53, and the water level of the electrolysis target water in the storage tray 10 reaches the water level L1, and the first float switch FS1. Is turned off (step S12), the water supply lamp is turned on (step S13).
Then, the control part 100 stops the feed water pump 60 (step S14), and will be in a standby state.

When the user notices that the water supply lamp is turned on, the user opens the front door panel 52A of the tank unit 51 and opens the open / close lid 53A of the second water supply tank 53. And the water supply pipe 54 is removed, the 2nd water supply tank 53 is taken out from the tank unit 51, water is supplied, and the water supply pipe 54 is attached again and accommodated in the tank unit 51 (step S15).
After the water supply, when the user presses the operation button again (step S16), the control unit 100 shifts the process to step S1 in FIG. 8, and thereafter performs the same process.
Next, the operation when the water exchange lamp is turned on will be described.
When the air sterilizer is driven for a long period of time, dust and scale (insoluble matter in the electrolysis target water) accumulate in the storage dish 10.

FIG. 10 is a process flowchart at the time of water exchange.
Therefore, in the present embodiment, a timer count is performed, and the control unit 100 lights the water exchange lamp every predetermined period.
First, when the water exchange lamp is turned on, the control unit 100 shifts to an operation stop state (step S21).
Next, the control unit 100 starts driving the water supply pump 60 (step S22), supplies it to the storage tray 10 via the water supply pipe 54, and whether or not the second float switch FS2 is turned on, that is, stores. It is determined whether or not the water level in the dish 10 has reached the water level L4 (step S23).

In the determination of step S23, when the water level in the storage tray 10 has not yet reached the water level L4 (step S23; No), the control unit 100 shifts the process to step S22 and continues to drive the feed pump 60. It will be.
In the determination of step S23, when the water level in the storage tray 10 reaches the water level L4 (step S23; Yes), the control unit 100 stops the water supply pump 60 (step S24).
In this state, the user prepares the drain tube connected to the outlet side of the circulation pump 13 via a cock (not shown) in the drain state, and switches the outlet side of the circulation pump 13 to the drain tube side (step S25).

Then, when the user presses the reset button and the operation button (not shown) at the same time, the operation proceeds to the water exchange operation, and the control unit 100 drives the circulation pump 13 and starts draining through the drain tube. (Step S28).
When the drainage proceeds and the second float switch FS2 is turned off, that is, when the water level in the storage tray 10 reaches the water level L2, the control unit 100 drives the water supply pump 60 to provide the second water as cleaning water. Supply of water (electrolysis target water) from the water supply tank is started (step S30).
Subsequently, the control unit 100 determines whether or not a predetermined time for cleaning (600 sec in FIG. 10) has elapsed (step S31).

In the determination of step S31, when the predetermined time has not elapsed (step S31; No), the control unit 100 enters a standby state.
In the determination of step S31, when the predetermined time has elapsed (step S31; Yes), the control unit 100 stops the water supply pump 60 (step S32), and the first float switch FS1 is turned off (step S33). ) That is, when the water level in the storage tray 10 is equal to or lower than the water level L1, the water exchange is completed and a standby state is entered (step S34).
The process of the above step S25-step S34 is a water exchange process.

Thereafter, when the user presses the operation button again (step S16), the control unit 100 shifts the process to step S1 in FIG. 8, and performs the same process.
As described above, according to this embodiment, continuous operation is possible without increasing the supply frequency of the water to be electrolyzed more than necessary. Furthermore, since the water exchange process can be performed using the electrolysis target water in the second water supply tank 53, the user can easily perform maintenance.
Further, even when the electrolysis target water in the second water supply tank 53 runs out or when the electrolysis target water is put into the second water supply tank 53, air sterilization is performed using the electrolysis target water in the first water supply tank 11. And the usability when installed in a place such as a store where continuous operation is required is improved.
In addition, since the water supply uses a tank type, installation is easy even when water pipes are difficult or costly.

As mentioned above, although one Embodiment of this invention was described, this invention is not limited to this, A various change implementation is possible.
In the above description, as shown in FIGS. 1 and 2, the tank unit 51 is installed on the left side toward the air sterilizer main body 1, that is, on the chamber C side. While only a control board (not shown) is arranged, the chamber A is equipped with equipment that requires maintenance such as the circulation pump 13, the electric field tank 31, and the first water supply tank 11. This is because it is necessary to secure a service space.
However, if such a service space can be sufficiently secured, the tank unit 51 can be arranged on the side of the chamber A as shown by a one-dot chain line in FIG. In this case, there is an advantage that the water supply pipe 54 extending from the second water supply tank 53 to the water supply pump 60 can be made shorter as compared with the case where the tank unit 51 is arranged as shown in FIG.

It is also possible to eliminate the casing 52 of the tank unit 51 and arrange the second water supply tank 53 as it is next to the air sterilizer main body 1. In this case, by making the second water supply tank 53 transparent, the amount of water in the second water supply tank 53 can be easily grasped, and there is an advantage that the water supply timing is easy to understand.
In the above description, the first water supply tank 11 is also configured to be removed and supplied with water. However, the water supply pump 60 is provided with a diversion valve, and supplied to the first water supply tank 11 from the second water supply tank 53 at an appropriate timing. By doing so, maintenance becomes easier.

  In the above description, the case where the blower fan 7 is continuously operated has been described, but it may be intermittently operated. Thereby, the electric power consumption of this ventilation fan can be reduced, and energy saving can be achieved.

In the above description, hypochlorous acid is generated as the active oxygen species. For example, ozone (O ₃ ) and hydrogen peroxide (H ₂ O ₂ ) are generated as the active oxygen species. Good. 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 described above, 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.

It is a perspective view of the air sanitization system concerning one embodiment of the present invention. It is a perspective view which shows the internal structure of an air sanitization system. It is a longitudinal cross-sectional view of an air sterilizer main body. It is composition explanatory drawing of a gas-liquid contact member. It is explanatory drawing of the internal structure of an electrolytic vessel. It is a schematic diagram for demonstrating the structure of an air sterilizer. It is explanatory drawing of the water level in a storage tray, and the output state of each float switch. It is an operation | movement flowchart at the time of installation (and normal operation). It is an operation | movement flowchart in case a 2nd float switch will be in an OFF state, when water runs out in a 2nd water supply tank. It is a processing flowchart at the time of water exchange.

Explanation of symbols

X ... Air sterilization system 1 ... Air sterilizer main body 2 ... Case 3 ... Suction panel 4 ... Blowout panel,
5 ... Gas-liquid contact member,
7… Blower fan,
DESCRIPTION OF SYMBOLS 8 ... Support plate 9 ... Water receiving tray 10 ... Storage tray 11 ... 1st water supply tank 13 ... Circulation pump 17 ... Electrolyzed water supply pipe 31 ... Electrolyzer (electrolysis unit)
51 ... Tank unit,
52 ... Case 53 ... Second water supply tank 54 ... Water supply pipe 60 ... Water supply pump (second pump)
DESCRIPTION OF SYMBOLS 100 ... Control part 100A ... Microcomputer 100B ... Memory 101 ... Operation panel 102 ... Notification panel 102A ... Operation lamp 102B ... Water supply lamp 105 ... Inverter circuit FS1 ... 1st float switch (water level sensor)
FS2 ... 2nd float switch (water level sensor).

Claims (4)

An electrolysis unit that electrolyzes water to be electrolyzed, which is water or water containing chlorine ions, to generate electrolyzed water;
A gas-liquid contact member to which the electrolyzed water generated by the electrolysis unit is dropped; and
A blower fan for blowing indoor air to the gas-liquid contact member;
A first water supply tank having a first capacity for storing the water to be electrolyzed;
A second water supply tank having a second capacity larger than the first capacity for storing the water to be electrolyzed;
A reservoir for storing the water to be electrolyzed from the first water tank and the second water tank;
A first pump for supplying the water to be electrolyzed in the second water supply tank to the storage unit;
A second pump for supplying the electrolysis target water in the reservoir to the electrolysis unit;
An air sterilization apparatus comprising: In the air sterilizer according to claim 1,
Provided in the reservoir, the water level of the electrolysis target water in the reservoir has dropped to a predetermined second water level that is higher than a predetermined first water level that requires water supply to the second water tank. A water level sensor to detect
Based on the detection state of the water level sensor, the controller that drives the first pump to supply the electrolysis target water in the second water supply tank to the storage unit;
An air sterilization apparatus comprising: In the air sterilizer according to claim 2,
A second water level sensor that is provided in the storage unit and detects that the water level of the electrolysis target water in the storage unit has dropped below the first water level;
Based on the detection state of the second sensor, a notification unit that notifies the user of water supply to the second water supply tank;
An air sterilization apparatus comprising: In the air sterilizer according to any one of claims 1 to 3,
The air sterilization apparatus, wherein the water to be electrolyzed in the second water supply tank is supplied as cleaning water by the first pump when water is exchanged in the reservoir.

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