CN101121036A - Air Sterilization Device - Google Patents

Abstract

An air filtering apparatus includes: an electrolytic cell for electrolyzing water to produce electrolyzed water, a gas-liquid contact member wetted by the electrolyzed water produced by the electrolytic cell, and a blower fan for blowing air to the gas-liquid contact member, the air filtering apparatus comprising: a circulation path for supplying the electrolyzed water to the gas-liquid contact member, receiving and storing the electrolyzed water flowing down from the gas-liquid contact member by a water receiving tray, and pumping up the stored electrolyzed water to supply the electrolyzed water to the gas-liquid contact member again, a drain pipe branched from the circulation path, a water stop valve for opening and closing the drain pipe, and a drain tank for receiving and storing the electrolyzed water discharged from the drain pipe when the water stop valve is opened.

Description

Air Sterilization Device

technical field

The present invention relates to an air sterilizing device capable of removing airborne microorganisms such as bacteria, viruses, and fungi (hereinafter simply referred to as "viruses, etc.").

Background technique

Generally, there are proposals to use tap water, etc. for electrolysis for the purpose of removing viruses floating in the air, and to supply electrolyzed water containing active oxygen such as hypochlorous acid to humidifying elements (filter materials, gas-liquid components) made of non-woven fabrics, etc. Contact member) and the like are supplied, and viruses and the like are contacted with the electrolyzed water supplied to the humidifying element to inert the viruses and the like, so as to sterilize the air (for example, (Japanese) Patent Application Publication No. 2002-181358).

Since the above-mentioned conventional sterilization devices are often used for a long period of time, it is desired that the maintenance can be easily performed and the burden of maintenance can be reduced.

Contents of the invention

An object of the present invention is to provide an air sterilizing device which is easy to maintain.

In order to solve the above-mentioned problems, the air sterilization device of the present invention includes: an electrolytic cell that electrolyzes water to generate electrolyzed water, a gas-liquid contact member that is wetted by the electrolytic water generated by the electrolytic cell, and a gas-liquid contact member that is sent to the gas-liquid contact member. An air blower fan, the air sterilizing device is characterized in that it includes: a circulation path for supplying the electrolyzed water to the gas-liquid contact member, and passing the electrolyzed water flowing down from the gas-liquid contact member through the water receiving channel. The tray receives and stores the stored electrolyzed water and supplies it again to the gas-liquid contact part; the drain pipe branched from the circulation path; the water stop valve for opening and closing the drain pipe; the drain tank, which is located in the When the water stop valve is opened, the electrolyzed water discharged from the drain pipe is received and stored.

According to this structure, since the electrolyzed water circulating in the circulation path can be drained to the drainage tank by opening the water stop valve, the water can be replaced easily, and the maintenance of the air sterilization device is easy, and the maintenance of the air sterilization device can be performed with a small amount of labor. Labor keeps the interior of the air-cleaning unit clean.

Here, as for the electrolyzed water discharged to the drainage tank, in order to effectively utilize its sterilization ability, it can also be used as cleaning water. Electrolyzed water that has the ability to eliminate bacteria can be effectively used for purposes other than bacteria removal.

In the above structure, a part of the water receiving tray is formed with a deeper storage portion, and the drain pipe is a pipe extending from the storage portion of the water receiving tray to the drainage tank located below the water receiving tray. .

At this time, when the water stop valve is opened, the electrolyzed water stored in the storage part of the water receiving tray flows down to the drain tank naturally due to gravity and is discharged, so the electrolyzed water can be reliably discharged by a simple structure.

The above-mentioned configuration may include: a timer unit for counting the operation time; and a control unit for opening the water stop valve when the operation time counted by the timer unit reaches a predetermined time.

At this time, since the control unit discharges the electrolyzed water in the circulation path every time the operation time reaches a predetermined time, the water is replaced, so that the water can be replaced regularly. And since the timing of water replacement can be automatically controlled, the maintenance of the air sterilization device is easy.

The electrolytic cell is configured to generate electrolyzed water by applying a voltage between a plurality of electrodes. During normal operation, the control unit applies a voltage between the plurality of electrodes of the electrolytic cell to generate electrolyzed water. While the electrolyzed water is circulated through the circulation path, air is blown by the blower fan. When the water stop valve is opened to discharge water, the polarity between the plurality of electrodes is first reversed to generate the Electrolyzing water, circulating the electrolyzed water in the circulation path, and then opening the water stop valve.

At this time, in the state where the polarity of the electrodes of the electrolytic cell is reversed from that during normal operation, the water stop valve is opened to discharge the electrolyzed water from the circulation path. Here, since the polarity is reversed in the electrolytic cell, scales such as calcium carbonate and magnesium carbonate adhering to the electrodes during normal operation are peeled off from the electrodes. The peeled scale floats in the electrolyzed water and is discharged to the drain tank together with the electrolyzed water. In this way, since the control unit reverses the polarity between the electrodes of the electrolytic cell, and the scale accumulated in the electrolytic cell is discharged to the drain tank together with the electrolyzed water by opening the water stop valve, the replacement of water and the removal of scale can be performed at the same time. remove. In this way, the burden of maintenance can be greatly reduced, and the air sterilization device can be kept in a good device state for a long period of time through simple maintenance. Since the control unit does not operate the blower fan during a series of operations for water replacement, unnecessary power consumption can be suppressed.

The control unit has a function of inverting polarities between the plurality of electrodes included in the electrolytic cell to electrolyze water.

Here, when the controller reverses the polarity between the electrodes of the electrolytic cell to electrolyze water, electrolyzed water containing active oxygen species such as hypochlorous acid and ozone having a strong oxidizing effect is generated in the electrolytic cell. Therefore, water containing active oxygen species such as hypochlorous acid and ozone having a strong oxidizing effect circulates in the circulation path, and then the electrolyzed water is discharged from the drain pipe. In this way, when the water is replaced, the circulation path and the gas-liquid contact parts can be cleaned and sterilized. In particular, by generating active oxygen different from the active oxygen generated during normal operation in the electrolytic cell, active oxygen (active oxygen species) different from the active oxygen generated during normal operation can be used to efficiently contact the circulation path and gas-liquid Parts are cleaned and sterilized.

Furthermore, it is further provided with an exhaust port for discharging the air passing through the gas-liquid contact member and a cover capable of closing the exhaust port. The part reverses the polarity between the plurality of electrodes included in the electrolytic cell.

At this time, since the control unit applies a voltage to the electrodes of the electrolytic cell to generate active oxygen (active oxygen species) such as ozone or hypochlorous acid, and closes the exhaust port while the electrolyzed water circulates in the circulation path, it is caused by The odor of the active oxygen will not leak from the exhaust port. Therefore, it is possible to clean and sterilize the circulation path and the gas-liquid contact parts and replace the water while maintaining the comfortable indoor environment in which the air sterilizing device is installed. As described above, since the control unit does not operate the blower fan during a series of operations for water exchange, leakage of odor can be more reliably suppressed.

The air sterilization device of the present invention includes: an electrolytic cell that electrolyzes water to generate electrolyzed water, a gas-liquid contact member that is wetted by the electrolytic water generated by the electrolytic cell, and a blower fan that sends air to the gas-liquid contact member, It is characterized by comprising: a circulation path for circulatingly supplying the electrolyzed water to the gas-liquid contact member, and a control unit, the control unit controls the air sterilizing device to perform the following operation: electrolyzed water is generated by the electrolytic cell, an air sterilizing operation in which the electrolyzed water is circulated in the circulation path while sending air to the gas-liquid contact member through the air supply fan, thereby sterilizing the air; and In the stopped state, the electrolyzed water is generated by the electrolytic cell and circulated in the cleaning operation through the circulation path.

According to this configuration, the control unit performs a cleaning operation in which electrolyzed water circulates through the circulation path, in addition to the air sterilization operation in which viruses and the like floating in the air are removed.

As in the air sterilizing device of the present invention, in the state of continuous non-operation, for the reason of not supplying electrolyzed water to the gas-liquid contacting parts, the gas-liquid contacting parts may dry and lose the ability to sterilize. Manual cleaning or cleaning is recommended for the propagation of foreign matter such as bacteria or viruses on gas-liquid contact parts. However, according to the air sterilizing device of the present invention, the drying of the gas-liquid contact parts can be prevented by performing the cleaning operation, and the multiplication of bacteria and viruses in various parts including the gas-liquid contact parts can be prevented. Therefore, even if the frequency of manual cleaning is reduced and the labor force for maintenance is reduced, the inside of the air sterilization device can be kept in a clean state, and maintenance is easy.

In the above configuration, the control unit may perform the cleaning operation every predetermined time after the air sterilization device stops the air sterilization operation.

At this time, since the control unit performs the cleaning operation every predetermined time even when the air sterilization operation is not performed, the electrolyzed water can be regularly supplied to various parts of the circulation path including the gas-liquid contact member. In this way, even if the air sterilization operation is stopped for a long period of time, the cleanliness in the air sterilization device can be maintained. Furthermore, since the control unit executes the cleaning operation at the optimum frequency and timing, there is no need for troublesome cleaning operation frequency management, and unnecessary cleaning can be omitted, thereby saving energy.

In the above configuration, the control unit performs the washing operation while the blower fan is stopped.

At this time, during the cleaning operation, since the air sterilizing device makes almost no sound except the sound of electrolytic water circulation, the quietness of the room where the air sterilizing device is installed can be maintained. In this way, the manager who manages the air sanitizer can perform the cleaning operation without being restricted by the time zone or the installation environment. Since the circulation of air inside and outside the device is suppressed during the cleaning operation, there is an advantage that there is no leakage of odor or the like caused by electrolyzed water inside the air sterilization device to the outside of the device.

In the above configuration, the control unit controls the electrolytic cell during execution of the cleaning operation to generate active oxygen different from active oxygen generated during execution of the air sterilization operation.

At this time, since the control unit generates active oxygen different from the normal air sterilization operation through the electrolytic cell and circulates in the circulation path, the circulation path and gas-liquid contact parts can be effectively cleaned and sterilized.

Here, the active oxygen generated in the electrolytic cell during the execution of the cleaning operation may also be ozone.

In the above configuration, the control unit may control the electrolytic cell to generate active oxygen at a concentration different from that during the air sterilization operation during execution of the cleaning operation.

At this time, since the control unit generates electrolyzed water containing active oxygen at a different concentration from that in the air sterilizing operation in the electrolytic cell during the cleaning operation, for example, electrolyzed water containing a higher concentration of active oxygen than in the air sterilizing operation can be used, To clean and sterilize the circulation path and gas-liquid contact parts, it can maintain higher cleanliness.

In the above structure, a vent window capable of closing the discharge port may be provided at the discharge port for discharging the air sent by the blower fan to the outside of the device, and the control unit may close the discharge port in the state where the vent window closes the discharge port. Next, the cleaning operation is performed.

At this time, the control unit closes the ventilation window during the cleaning operation so that the operation sound during the cleaning operation is difficult to leak out of the device, and the quietness is maintained. In addition, since the circulation of air inside and outside the device is suppressed during the cleaning operation, it is difficult for odors and the like caused by electrolyzed water inside the device to leak to the outside of the device. Therefore, there is very little influence on the room in which the air sanitizing device is installed, so the cleaning operation can be performed without being restricted by the time zone or the installation environment.

The above configuration may include a water supply unit that supplies water to the circulation path from an external water supply pipe, and a drain unit that branches off from the circulation path and discharges the electrolyzed water.

In this case, since the water supply and drainage pipes can be used for water supply and drainage of the air sterilizing device, manual water supply and drainage are not required, and water supply and drainage are always performed by, for example, the control of the control unit. Therefore, even if the air sterilization operation is not performed for a long period of time, the cleaning operation can be performed without being restricted by water supply and drainage, so the cleanliness inside the device can be reliably maintained without increasing maintenance labor.

In this way, the air sterilization device of the present invention can make maintenance very easy, and can keep the inside of the device clean with less labor.

Description of drawings

Fig. 1 is a perspective view showing the appearance of the air sterilization device of the first embodiment;

Fig. 2 is a perspective view showing the internal structure of the air sterilization device of Fig. 1;

Fig. 3 is a partial sectional front view showing the internal structure of the air sterilization device of Fig. 1;

Fig. 4 is a left side sectional view showing the internal structure of the air sterilization device of Fig. 1;

Fig. 5 is a right side cross-sectional view showing the internal structure of the air sterilization device of Fig. 1;

Fig. 6 is a top view showing the internal structure of the air sterilization device of Fig. 1;

Fig. 7 A, Fig. 7 B are the figures that represent the electrolyzed water circulation part that Fig. 1 air sterilization device possesses, and Fig. 7 A is the schematic diagram that represents circulation path structure, Fig. 7 B is the figure of electrolyzer structure;

Fig. 8 is a functional block diagram representing the structure of the control system of the air sterilization device of the first embodiment;

Fig. 9 is a flow chart representing the action of the air sterilizing device of Fig. 8;

Fig. 10 is a flow chart representing the water replacement operation performed by the air sterilization device of Fig. 8;

Fig. 11 is a flow chart showing in detail the modified example of Fig. 10 changing water operation;

Fig. 12 is a flow chart showing in detail the cleaning operation performed by the air sterilization device of the second embodiment;

Fig. 13 is a flow chart showing in detail the ozone cleaning operation performed by the air sterilization device of the third embodiment;

Fig. 14 is an appearance perspective view showing the structure of the fourth embodiment of the air sterilization device;

Fig. 15 is a diagram showing the internal structure of the air sterilization device of Fig. 14 .

Detailed ways

Embodiments of the present invention will be described with reference to the drawings.

Fig. 1 is an external perspective view of an air sterilization device 1 according to the first embodiment of the present invention. As shown in this FIG. 1 , the air sterilization device 1 has a housing 11 formed in a vertically long box shape, and is installed vertically, for example. A suction grill 12 is provided on the front lower portion of the frame body 11 , and an air outlet 13 (exhaust port) is provided on the upper surface of the frame body 11 . The air sterilization device 1 is a device that cleans the air in the room by sucking in the air in the installation room through the suction grille 12 to sterilize the air and discharging it from the blower port 13 .

On the upper surface of the frame body 11, a feed water tank outlet 14 for taking in and out a feed water tank 41 (FIG. 2) to be described later is provided. A drain tank outlet 15 is provided on the front surface of the housing 11 for taking in and out a drain tank 57 which will be described later. Openable and closable lids are attached to these water supply tank outlets 14 and drain tank outlets 15 .

A louver 20 for changing the direction of blown air is provided on the air outlet 13 .

Handling portions 17 are respectively formed on upper portions of both sides of the frame body 11 . The grip part 17 is a concave part for placing the hand when holding the frame body 11 by hand, and the air sterilization device 1 can be lifted and moved by one person during transportation.

Next, the internal structure of the air sterilization device 1 will be described with reference to FIGS. 2 to 6 .

FIG. 2 is a perspective view showing the internal structure of the air sterilization device 1 . In FIG. 2 , the outer shape of the housing 11 is shown by phantom lines as a reference. Fig. 3 is a partial sectional front view showing the structure of the air sterilization device 1, Fig. 4 is a left side sectional view, Fig. 5 is a right side sectional view, and Fig. 6 is a plan view.

The inside of the housing 11 is partitioned up and down by a support plate 37 , and a blower fan 31 and a fan motor 32 are housed in the lower chamber. The blower fan 31 is driven by a fan motor 32 , sucks in the air in the installation room through the suction grill 12 , and blows it out from the outlet 13 . The air blowing port 31A of the air blowing fan 31 is provided upward on the rear side portion of the housing 11 , and an opening is provided at a position overlapping the air blowing port 31A of the support plate 37 . The opening of the support plate 37 communicates with the space 1A extending up and down on the back side of the housing 11 . An air deflector 38 inclined toward the front side of the housing 11 is provided on the upper portion of the space 1A, and the front end of the air deflector 38 is connected to an upper end of a sprinkler box 51 described later.

Therefore, the air blown from the blower port 31A of the blower fan 31 passes through the space 1A as indicated by the arrow in FIG.

A prefilter 34 is provided in the housing 11 so as to overlap the side opposite to the suction grill 12 . The prefilter 34 is a filter for trapping, for example, objects having a particle diameter of 10 μm (micrometer). Air from which pollen and dust floating in the air have been removed by the prefilter 34 is sucked by the blower fan 31 .

An electrical box 39 and an electrolyzed water circulation unit 2 are provided on the support plate 37 . The electrical box 39 accommodates various electrical components such as a control board (not shown) on which various devices constituting the control unit 60 described later and a power supply circuit that supplies a power supply voltage to the fan motor 32 are mounted.

The electrolyzed water circulation unit (circulation path) 2 includes: a water receiving tray 42 , a water receiving tray float switch 43 , a circulating pump 44 , an electrolytic tank 46 , a water sprinkling box 51 and a gas-liquid contact member 53 .

The water receiving pan 42 is located above the electrical box 39, is a pan for receiving water dripped from the gas-liquid contact member 53, and has a depth for storing a predetermined amount of water. One end of the water receiving tray 42 forms a storage portion 42A with a deeper bottom, and the storage portion 42A is provided with a water receiving tray float switch 43 for detecting the water level. The water tray float switch 43 is a switch that is switched on when the water level of the reservoir 42A drops to a predetermined water level.

The water supply tank 41 is provided in the storage part 42A, and it is a structure which can supply water from the water supply tank 41 to the storage part 42A. In detail, a float valve (not shown) is provided at the water supply port 41A formed at the lower end of the water supply tank 41. When the water surface of the storage part 42A is lower than the water supply port 41A, the required amount of water is supplied from the water supply tank 41. The water is a mechanism to keep the water level of the storage part 42A constant.

A circulation pump 44 is provided above the storage portion 42A. The circulation pump 44 operates under the control of the control unit 60 ( FIG. 8 ), sucks up the water stored in the storage unit 42A, and sends it to the electrolytic cell 46 . The electrolytic cell 46 incorporates a plurality of electrodes as will be described later, and electrolyzes water by applying a voltage supplied from a control unit 60 ( FIG. 8 ) between these electrodes to generate electrolyzed water. The electrolyzed water generated in the electrolytic tank 46 is squeezed out from the electrolytic tank 46 by the water discharged from the circulation pump 44 and supplied to the sprinkler box 51 .

The water sprinkling box 51 is a tubular member assembled on the upper part of the gas-liquid contact part 53 , and a plurality of sprinkling holes are opened on the lower surface, and the electrolyzed water drips from the sprinkling holes 52 facing the sprinkling box 51 . The gas-liquid contact member 53 is a substantially plate-shaped member wetted with electrolyzed water from the sprinkler box 51 , and is disposed on the water receiving pan 42 together with the sprinkler box 51 . As shown in detail in FIG. 5 , the gas-liquid contact member 53 is arranged upright approximately vertically, and its lower end enters into the water receiving pan 42 . The sprinkler box 51 assembled on the gas-liquid contact member 53 is connected to the front end of the wind deflector 38 . Therefore, the exhaust air from the blower fan 31 passing through the space 1A is guided to the gas-liquid contact member 53 side by the air guide plate 38 and passes through the gas-liquid contact member 53 .

The gas-liquid contact member 53 is a filter member having a honeycomb structure. More specifically, the gas-liquid contact member 53 has a structure in which an element part in contact with gas is supported by a frame. The element portion is formed by laminating a corrugated plate member and a flat plate member, and a plurality of approximately triangular openings are formed between the corrugated plate member and the plate member. Therefore, when air is passed through the element part, a wide gas contact area can be ensured, and it is a structure in which electrolytic water drips and is difficult to clog.

In order to efficiently disperse the electrolyzed water dripped from the sprinkler box 51 to the element part, the gas-liquid contact member 53 is provided with a flow divider (not shown). The splitter is a thin sheet (woven fabric, non-woven fabric, etc.) made of liquid-permeable fiber material, and one or more pieces are arranged along the thickness direction section of the gas-liquid contact member 53 .

The gas-liquid contact member 53 and the feed water tank 41 are partitioned by the partition plate 36 . The partition plate 36 closes the space 1A and the sides of the gas-liquid contact member 53 for allowing air to pass through the gas-liquid contact member 53 smoothly.

Here, each part of the gas-liquid contact member 53 (including the frame, the element part, and the manifold) uses a material that is less deteriorated by electrolyzed water, such as polyolefin resin (polyethylene resin, polypropylene resin, etc.), PET (polyethylene resin, etc.), As raw materials such as ethylene terephthalate) resin, vinyl chloride resin, fluorine-based resin (PTFE, PFA, ETFE, etc.) or ceramic series materials, PET resin is used in this embodiment and the embodiments described later.

Each part of the gas-liquid contact member 53 has been applied with a hydrophilic treatment, and the affinity for electrolyzed water is improved, so that the water retention (wettability) of the gas-liquid contact member 53 for electrolyzed water is maintained, and the hereinafter described The contact of active oxygen (active oxygen species) with the room air lasts for a long time. Since the electrolyzed water having an antifungal effect is dripped onto the gas-liquid contact member 53, even if no antifungal measures (coating of an antifungal agent, etc.) are performed on the gas-liquid contact member 53, the growth of mold and the like can be avoided.

The air passing through the gas-liquid contact member 53 is discharged through the outlet filter 35 disposed below the outlet 13 .

The outlet filter 35 is a filter for preventing foreign matter from entering the housing 11 from the outlet 13 . The outlet filter 35 is provided with a net, a woven fabric, a nonwoven fabric, etc. (not shown), and these materials are preferably synthetic resins, and more preferably, materials constituting the gas-liquid contact member 53 . In order not to significantly increase the ventilation resistance of the air passing through the gas-liquid contact member 53, the outlet filter 35 preferably has a structure with appropriately thickened mesh.

A ventilation window 20 (cover) is arranged at the outlet 13 of the housing 11 . The louver 20 includes an upper plate 21 having a size capable of closing the air outlet 13 , a lower plate 22 disposed below the upper plate 21 parallel to the upper plate 21 , and a connecting portion 23 connecting the upper plate 21 and the lower plate 22 . The connection part 23 is a plate-shaped member provided at the left and right end parts of the upper board 21 and the lower board 22, respectively, and the pin 24 is provided upright, respectively. These two pins 24 protrude toward the frame body 11 from both side ends of the louver 20 , and are fitted into receiving portions (not shown) provided in the lateral direction of the air outlet 13 to support the louver 20 .

The two pins 24 are rotatably supported on the receiving portion and are connected to a louver drive motor 68 ( FIG. 8 ). Thus, the pin 24 is driven by the louver drive motor 68, and the louver 20 rotates accordingly.

The air outlet 13 is substantially closed by the upper plate 21 in a state where the louver 20 is substantially parallel to the upper surface of the frame body 11 . This state is set to be the “closed state” of the louver 20 . On the other hand, the state in which the louver 20 is inclined with respect to the upper surface of the housing 11 is set to be an "open state".

In the open state of the louver 20 , the air passing through the gas-liquid contact member 53 can be discharged from the air outlet 13 . Here, the air discharged from the air outlet 13 is discharged along the upper plate 21 and the lower plate 22 of the louver 20 . Therefore, by changing the angle of the ventilation window 20, the exhaust direction of the air sterilization device 1 can be adjusted.

Since the louver 20 has a two-blade structure in which the upper plate 21 and the lower plate 22 are arranged in parallel at a predetermined interval, it functions to rectify the air blown out from the air outlet 13 . In this way, there is an advantage that the air can be exhausted smoothly according to the angle of the louver 20 .

As long as the louver 20 is closed while the fan motor 32 is stopped, the air in the housing 11 hardly leaks outside. Therefore, when the electrolytic cell 46 generates ozone or high-concentration active oxygen as will be described later, it is difficult for their characteristic odors to leak out. Therefore, there is an advantage of not only keeping the indoor environment where the air sterilization device 1 is installed comfortable, but also utilizing ozone and high-concentration active oxygen.

7A and 7B are diagrams illustrating the electrolyzed water circulation part of the air sterilization device in FIG. 1 and the supply of electrolyzed water through the circulation part. FIG. 7A is a schematic diagram showing the structure of the electrolyzed water circulation part 2, and FIG. Structure diagram.

The supply of electrolyzed water to the gas-liquid contact member 53 will be described with reference to FIGS. 7A and 7B . In this embodiment, a case where tap water is added to the water supply tank 41 to operate the air sterilization device 1 will be described.

When the water supply tank 41 for adding tap water is installed on the air sterilization device 1, as described above, tap water is supplied from the water supply tank 41 to the water receiving tray 42 so that the water level of the water receiving tray 42 reaches a predetermined level. The water in the water receiving pan 42 is pumped up by the circulation pump 44 and supplied to the electrolytic cell 46 .

As shown in FIG. 7B , the electrolytic cell 46 includes two pairs of electrodes 47 and 48 , and by applying a voltage between the electrodes 47 and 48 , the water flowing into the electrolytic cell 46 is electrolyzed to generate electrolyzed water containing active oxygen. Here, the so-called active oxygen refers to oxygen molecules with higher oxidation activity than ordinary oxygen and superoxide anions containing related substances, singlet oxygen (one barium acid), alkylated atomic groups, and hydrogen peroxide. Active oxygen includes the concept of active oxygen in a broad sense such as ozone and hypohalous acid. The electrolytic cell 46 is disposed close to the gas-liquid contact member 53 , and immediately supplies the active oxygen generated by the electrolysis of tap water to the gas-liquid contact member 53 .

The electrode 47 is, for example, an electrode plate made of titanium (Ti) as the base and indium (Ir) or platinum (Pt) as the cladding layer, and hypochlorous acid as active oxygen is generated by applying a positive potential from an external power source as an anode electrode. .

The electrode 48 is, for example, an electrode plate made of titanium as a base and platinum or tantalum (Ta) as a cladding layer, and generates ozone as active oxygen by applying a positive potential from an external power source as an anode electrode.

When the electrode 47 is used as an anode, the electrode 48 is used as a cathode electrode, and when a voltage is applied between the electrode 47 and the electrode 48 from an external power source, hydrogen ions (H ⁺ ) and hydrogen in the water on the electrode 48 as the cathode electrode The oxide ion (OH ^- ) reacts as shown in the following formula (1).

4H ⁺ 4e ^- + (4OH ^- ) → 2H ₂ + (4OH ^- ) (1)

On the other hand, water is electrolyzed on the electrode 47 as the anode electrode (anode) as shown in the following formula (2).

2H ₂ O→4H ₂ +O ₂ +4e ^- (2)

Simultaneously, at the electrode 47, chlorine ions (chloride ions Cl ⁻ ) contained in water react as shown in the following formula (3) to generate chlorine (Cl ₂ ).

2Cl ^- → Cl ₂ +2e ^- (3)

And this chlorine reacts with water as shown in following formula (4), and produces hypochlorous acid (HClO) and hydrogen chloride (HCl).

Cl ₂ +H ₂ O→HClO+HCl (4)

The hypochlorous acid produced by the electrode 47 is included in active oxygen in a broad sense, and has strong oxidizing and bleaching effects. The aqueous solution in which hypochlorous acid is dissolved, that is, the electrolyzed water produced by the air sterilizing device 1 exerts various air cleaning effects such as inerting viruses, sterilizing bacteria, and decomposing organic compounds.

On the other hand, when the electrode 47 is used as the cathode electrode, and the electrode 48 is used as the anode electrode, and the voltage is applied between the electrode 47 and the electrode 48 from an external power source, the electrode 48 as the anode electrode, as shown in the following formula (5 ) to (7) to react to generate ozone.

2H ₂ O→4H ₂ +O ₂ +4e ^- (5)

3H ₂ O→O ₃ +6H ₂ +6e ^- (6)

2H ₂ O→O ₃ +4H ₂ +4e ^- (7)

On the other hand, react as shown in the following formulas (8) and (9) at the electrode 47 as the cathode electrode, and the ^O2- generated by the electrode reaction is combined with ^H in the solution to generate hydrogen peroxide (H ₂ O ₂ ).

4H ⁺ +4e ^- +(4OH ^- )→2H ₂ +(4OH ^- )(8)

O ^2- + ^e- +2H ⁺ →H ₂ O ₂ (9)

Thus, in this embodiment, by applying a voltage between the electrodes 47 and 48 from an external power source with the electrode 47 at a positive potential, hypochlorous acid having a high bactericidal effect is generated from the electrode 47 side, and electrolyzed water containing hypochlorous acid can be generated.

In addition, by applying a voltage between the electrodes 47 and 48 from an external power source with the electrode 48 as a positive potential, ozone with a high bactericidal effect is generated from the electrode 48 side, and hydrogen peroxide is generated from the electrode 47 side, and these ozone-containing chemicals can be produced. Electrolyzed water with hydrogen peroxide.

When the electrodes 47, 48 generate hypochlorous acid with high bactericidal power, when the electrolyzed water containing the hypochlorous acid is dripped from the sprinkler box 51 to the gas-liquid contact member 53, the air blown out by the blower fan 31 will flow in the gas-liquid The contact member 53 is in contact with hypochlorous acid. In this way, the viruses and the like floating in the air are inert, and the odorous substances contained in the air react with hypochlorous acid to be decomposed or ionized and dissolved. Therefore, the air is sterilized and deodorized, and the cleaned air is discharged from the gas-liquid contact member 53 .

When ozone and hydrogen peroxide are generated by electrodes 47 and 48 , the air blown from blower fan 31 contacts ozone and hydrogen peroxide at gas-liquid contact member 53 . In this way, the viruses and the like floating in the air are inert, and the odorous substances contained in the air react with ozone and hydrogen peroxide to be decomposed or ionized and dissolved. Therefore, the air is sterilized and deodorized, and the cleaned air is discharged from the gas-liquid contact member 53 .

Influenza virus is cited as an example of the mechanism by which active oxygen inactivates viruses and the like. The above-mentioned active oxygen has the effect of destroying and eliminating (removing) the surface protein (spike) of influenza virus necessary for infection of influenza. When this surface protein is destroyed, the influenza virus does not bind to the receptor (receptor) necessary for influenza virus infection, and infection is prevented. Therefore, when the influenza virus floating in the air comes into contact with the electrolyzed water containing active oxygen at the gas-liquid contact member 53, it can be said that it loses its infectivity and infection is prevented.

Therefore, even if the air sterilization device 1 is installed in so-called large spaces such as kindergartens, elementary schools, junior high schools, high schools, nursing care insurance facilities, hospitals, etc., it is possible to clean (sterilize, deodorize) the water to be electrolyzed. The air spreads widely in a large space, and it can efficiently sterilize and deodorize the air in a large space.

Here, switching of an electrode for applying a positive potential to either side of the electrodes 47 and 48 in the electrolytic cell 46 can be performed by reversing the polarity of the electrodes. This embodiment can be executed by changing (reversing) the voltage applied to the electrodes 47 and 48 by a control unit 60 ( FIG. 8 ) described later.

The concentration of active oxygen in the electrolyzed water can be adjusted so that the virus to be removed can be inert. The active oxygen concentration can be adjusted by adjusting the voltage applied between the electrode 47 and the electrode 48 and by adjusting the value of the current flowing between the electrode 47 and the electrode 48 .

For example, when a positive potential is applied to the electrode 47, and the current value flowing between the electrode 47 and the electrode 48 is set such that the current density is 20mA (milliampere)/cm ² (square centimeter), then a prescribed favorable residual chlorine concentration ( For example, 1 mg (milligram)/1 (liter)). By changing the voltage applied between the electrodes 47 and 48 to increase the current value, the concentration of hypochlorous acid in the electrolyzed water can be increased to a high concentration. For ozone or hydrogen peroxide in the electrolyzed water, it is the same as above, as long as a positive potential is applied to the electrode 48, the value of the current flowing between the electrode 47 and the electrode 48 is increased, and the concentration of ozone or hydrogen peroxide in the electrolyzed water can be increased. .

The present embodiment has been described by taking the supply of tap water from the water supply tank 41 as an example as described above. Since chloride is added to tap water for the purpose of sterilization, it contains chloride ions, and the chloride ions react as shown in the above formulas (3) and (4) to generate hypochlorous acid and hydrochloric acid. This is not limited to the case of using tap water, as long as the water supplied to the electrolytic cell 46 is water containing halide ions in which halides are added or mixed, the same reaction as that of the above-mentioned formula (3) and formula (4) can be passed. And generate active oxygen containing halogen.

The air sterilizer 1 can also produce the same reaction when dilute water (including pure water, purified water, well water, some tap water, etc.) is used for ions. That is, as long as a halide (salt, etc.) is added to dilute water, the ions react in the same way as the above-mentioned formula (3) and formula (4) to obtain active oxygen. That is, the air sanitizing device 1 is not limited to tap water sufficiently added with chlorides, and even when other water is used, it can sufficiently clean the air (inactivation of viruses, etc., sterilization, deodorization).

In this case, any configuration is required as long as the chemical agent (halide, etc.) is supplied to the water introduced into the electrolytic cell 46 . For example, a medicament supply device for supplying the above-mentioned medicament may also be provided on the air sterilizing device 1 . It may be a configuration in which the chemical is injected into the water supply tank 41, or a structure in which the concentration-adjusted chemical is stored in the water supply tank 41 itself.

Here, salt or saline can be used as the medicine. For example, as long as the concentration of salt water in the electrolytic cell 46 is adjusted to the degree of 2 to 3% (percentage by weight), the electrolyzed water (0.5 to 3%) containing hypochlorous acid or hydrogen peroxide can be generated by electrolyzing the salt water in the electrolytic cell 46. 1%). According to this structure, even if the ions in the water introduced into the electrolytic cell 46 are thin, the ions can be increased by adding salt or saline, and active oxygen can be efficiently and stably generated during electrolysis of water.

The electrolyzed water dripped from the sprinkler box 51 to the gas-liquid contact member 53 is conducted in the gas-liquid contact member 53 , moves downward, and falls to the water receiving pan 42 . The electrolyzed water dropped into the water receiving tray 42 is pumped up again by the circulation pump 44 and supplied to the gas-liquid contact member 53 through the electrolytic cell 46 . Thus, in the structure of this embodiment, the water is circulated, and the air can be sterilized efficiently for a long time by effectively utilizing a small amount of water. When the amount of water circulating in the electrolyzed water circulation unit 2 decreases due to evaporation, an appropriate amount of water in the water supply tank 41 is supplied to the water receiving pan 42 .

The air sterilization device 1 can properly discharge the water stored in the water receiving tray 42 .

As shown in FIGS. 2 to 7 , a tank-shaped drain tank 57 having a predetermined depth and an opening at the top is disposed below the storage portion 42A. The drain tank 57 is placed on the support plate 37 ( FIG. 2 ), and can be taken in and out from the drain tank outlet 15 ( FIG. 1 ) of the frame body 11 . The drain pipe 55 is connected to the storage portion 42A of the water receiving tray 42 and is provided with a drain valve 56 (water stop valve) for opening and closing the drain pipe 55 . The front end of the drain pipe 55 extends downward and enters from the opening of the drain tank 57 .

The bottom of the reservoir 42A has an opening at the connection with the drain pipe 55, and the water in the reservoir 42A flows out to the drain pipe 55, which extends downward from the reservoir 42A. Therefore, by opening the drain valve 56 under the control of the control unit 60 ( FIG. 8 ), the water in the water receiving pan 42 flows down to the drain tank 57 through the drain pipe 55 . In this way, the water in the electrolytic water circulating part 2 can be recovered and discharged through the drain tank 57 by using the drain pipe 55 branched from the electrolytic water circulating part 2, and by controlling the opening and closing of the drain valve 56. The drain tank 57 is provided with a handle 57A that is easy to hold, and can be easily taken in and out from the above-mentioned drain tank outlet 15 ( FIG. 1 ).

FIG. 8 is a functional block diagram showing the structure of the control system of the air sterilization device 1 .

As shown in this FIG. 8, the above-mentioned fan motor 32, circulation pump 44, drain valve 56, louver drive motor 68 for opening and closing the louver 20, and a power supply unit 67 for supplying power to the above-mentioned various parts are connected to the control unit 60, and according to The operation is performed under the control of the control unit 60 .

Various switches and indicator lights arranged on the operation panel 16 are connected to the control unit 60, and the water tray float switch 43, electrodes 47, 48 and the electrolytic tank float switch 66 for detecting the water level in the electrolytic tank 46 are connected to the control unit 60. .

The control unit 60 includes: a computer 61 for overall control of the air sterilizing device 1, a storage unit 62 for storing data such as control programs and control parameters executed by the computer 61, a timer 63 for timing operations under the control of the computer 61, The input unit 64 detects the operation of the operation panel 16 and outputs the operation content to the computer 61 , and the output unit 65 outputs the processing result of the computer 61 to control the lighting of an indicator light (not shown) of the operation panel 16 .

The computer 61 reads and executes the control program stored in advance in the storage unit 62 , and reads the control parameters stored in the storage unit 62 to operate each part of the air sanitizer 1 .

Specifically, when the computer 61 performs an operation instructing the operation panel 16 to start operating, and when information representing the operation is input from the input unit 64, the computer 61 operates the circulation pump 44 to start water circulation, and applies water to the electrodes 47 and 48. voltage to generate electrolyzed water. And the computer 61 makes the louver driving motor 68 act so that the louver 20 is in the open state, and then the fan motor 32 is started to act to start the air blowing of the blower fan 31 . Through the above series of operations, the air sterilization operation of the air sterilization device 1 starts. With the start of the air sterilization operation, the computer 61 displays a display indicating that the operation is in progress through the output unit 65 .

With the start of the air sterilization operation, the computer 61 starts counting the operation time by the timer 63 . The timer 63 can accumulate the timing of the operation time, even if the air sterilization device 1 stops the air sterilization operation, the count value is not reset to zero, and continues to count when the air sterilization operation starts again.

During the execution of the air sterilization operation, the computer 61 judges the concentration of the electrolyzed water (the concentration of active oxygen) in the electrolytic cell 46 according to the conductivity between the electrodes 47 and 48, and appropriately adjusts the voltage applied between the electrodes 47 and 48 . During the execution of the air sterilization operation of the air sterilization device 1, when the computer 61 detects that the water level in the electrolytic tank 46 becomes a low water level through the electrolytic tank float switch 66, and detects that the water receiving tray When the water level at 42 becomes low, the application of voltage to the electrodes 47 and 48 is stopped, and the operation of the circulation pump 44 and the fan motor 32 is stopped, and a warning is displayed through the output unit 65 .

When the computer 61 performs an operation instructing the operation panel 16 to stop operation, and when information indicating the operation is input from the input unit 64 , the computer 61 stops applying voltage to the electrodes 47 and 48 to stop the circulation pump 44 . And then the computer 61 stops the fan motor 32, stops the air blowing of the blower fan 31, and then makes the louver drive motor 68 act so that the louver 20 is in the closed state. Through the above series of operations, the air sterilization operation of the air sterilization device 1 is stopped. When the air sterilization operation is stopped, the computer 61 stops the operation display of the output unit 65 and stops the operation time measurement of the timer 63 .

When the air sterilizing operation of the air sterilizing device 1 reaches a certain time, that is, when the count value of the timer 63 reaches a preset value, the computer 61 executes the water replacement process of discharging the water in the water receiving tray 42 to the drain tank 57. run.

Hereinafter, the operation of the air sanitizer 1 will be described centering on this water replacement operation.

FIG. 9 is a flowchart showing the operation of the air sterilization device 1 . In the execution of the operation shown in FIG. 9 , the computer 61 functions as a control unit, and the timer 63 functions as a timekeeping unit.

When the computer 61 instructs operation start by operating the operation panel 16, it controls each part of the air sterilization apparatus 1 as mentioned above, and starts an air sterilization operation (step S1). With the start of the air sterilization operation, the computer 61 starts counting the operation time T by the timer 63 (step S2).

In the air sterilizing operation, computer 61 judges whether the counting value of the operation time T of timer 63 has surpassed preset water replacement time T0 (step S3), when not exceeding water replacement time T0, then continue to judge until There is an instruction to stop the operation (step S4). When there is an instruction to stop the air sterilization operation through the operation of the operation panel 16 (step S4: Yes), the computer 61 stops the counting of the operation time T of the timer 63 (step S5), and the air sterilization device 1 as described above The air sterilization operation is stopped, and it shifts to the standby state.

When the count value of the operation time T of the timer 63 exceeds the preset water replacement time T0 (step S3: Yes), the computer 61 executes the water replacement operation (step S6). Details of the water replacement operation will be described later with reference to FIG. 10 . When the water replacement operation is completed, the computer 61 shifts to the operation of step S4.

Fig. 10 is a flowchart showing in detail the water replacement operation shown in step S6 of Fig. 9 .

With the start of the water replacement operation, the computer 61 controls the output unit 65 to notify the start of the water replacement operation (step S11) through the indicator light of the operation panel 16, and stops the routine air sterilization operation (step S12).

Then, the computer 61 starts the operation of the circulation pump 44, and starts energizing the electrodes 47 and 48 of the electrolytic cell 46 (step S13). In this step S13, the fan motor 32 is stopped and does not change. And the computer 61 opens the drain valve 56 to discharge the water in the water receiving tray 42 to the drain tank 57 (step S14).

After the drain valve 56 is opened, the computer 61 monitors the state of the drain pan float switch 43 provided in the reservoir 42A (step S15). As mentioned above, the water pan float switch 43 is switched ON when the water level of the storage part 42A falls to a predetermined level. Therefore, when the water pan float switch 43 is turned on, the water level of the water pan 42 is below a predetermined level, and most of the water in the electrolyzed water circulation unit 2 is discharged to the drain tank 57 .

When water remains in water tank 41 at the start of the water replacement operation, the water level in water tank 42 does not drop while water is supplied from water tank 41 as the water in water tank 42 is drained. Therefore, when the water tray float switch 43 is turned on, the water in the water supply tank 41 is also fully discharged.

When the water tray float switch 43 is switched to connect (step S15: Yes), the computer 61 stops the power supply to the electrodes 47, 48, and makes the circulating pump 44 stop (step S16), and the drain valve 56 is closed (step S17) .

The computer 61 controls the output unit 65 to notify the drainage through the indicator lights of the operation panel 16, etc., and passes on the situation of replenishing water to the water supply tank 41 to the user (step S18), and monitors the state of the water receiving tray float switch 43 (step S19) .

When the water supply tank 41 supplemented with water is installed in the air sterilization device 1, water is supplied from the water supply tank 41 to the water receiving pan 42, and the water receiving pan float switch 43 is switched to OFF. Therefore, when the computer 61 detects that the water receiving tray float switch 43 is turned off (step S19: Yes), it starts normal operation (step S20).

In this way, the air sterilizing device 1 electrolyzes water in the electrolytic cell 46 to generate electrolyzed water, drops the generated electrolyzed water from above the gas-liquid contact member 53, and blows air to the gas-liquid contact member 53 by the blower fan 31. The air is sterilized, the electrolyzed water circulation part 2 is set, the electrolyzed water flowing down from the gas-liquid contact part 53 is received and stored by the water receiving tray 42, and the stored electrolyzed water is pumped up by the circulating pump 44 and supplied to the electrolyzer 46 again, The electrolyzed water circulated in the electrolyzed water circulation part 2 is discharged to the drain tank 57 through the drain pipe 55 extending downward from the storage part 42A of the water receiving tray 42 to the gas-liquid contact part 53, so the electrolyzed water can be easily discharged. The electrolyzed water circulated in the electrolyzed water circulation unit 2 is discharged, and the water can be replaced easily. In this way, the air sanitizer 1 that is easy to maintain can be realized, and the inside of the air sanitizer 1 can be kept clean with little labor.

The electrolyzed water discharged to the drain tank 57 can also be used as cleaning water and the like. Electrolyzed water with sterilizing ability.

Since the drain pipe 55 communicates with the deeper reservoir 42A formed in the bottom of the water tray 42 and reaches the drain tank 57 below the water tray 42, as long as the drain valve 56 is turned on, the water can be received. The electrolyzed water in the pan 42 naturally flows down to the drain tank 57 due to gravity. Therefore, electrolyzed water can be reliably discharged with a simple structure. Furthermore, the discharge state of the electrolyzed water can be monitored by the control unit 60 monitoring the state of the water receiving pan float switch 43 provided in the storage unit 42A.

The water supply port 41A of the water supply tank 41 that supplies water to the electrolyzed water circulation unit 2 opens to the water receiving pan 42 , and the water in the water supply tank 41 is supplied as the water level of the water receiving pan 42 decreases. Therefore, at the time when the water replacement operation starts, when there is water remaining in the water supply tank 41, new water is supplied from the water supply tank 41 as the water in the water receiving tray 42 is discharged, so that the remaining water in the water supply tank 41 can be used to The electrolytic cell 46, the sprinkler box 51, the gas-liquid contact part 53 and the water receiving tray 42 are cleaned. In this way, not only the replacement of water but also the cleaning of the electrolyzed water circulation part 2 can be performed.

Since the computer 61 of the control unit 60 opens the drain valve 56 to discharge the water to the drain tank 57 every time the running time counted by the timer 63 reaches the specified time, it can be replaced on the basis of regular water replacement. Automatically controls the timing of water replacement.

As described above, the air sanitizer 1 can switch between the operation of the electrolytic cell 46 to generate electrolyzed water containing hypochlorous acid and the operation to generate electrolyzed water containing ozone and hydrogen peroxide by reversing the potentials of the electrodes 47 and 48 . Therefore, the water in the electrolyzed water circulation unit 2 may be discharged to the drain tank 57 after the electrodes are reversed during the above-mentioned water replacement operation. This case will be described below.

Fig. 11 is a flowchart showing in detail another example of the water replacement operation shown in step S6 of Fig. 9 . In the form shown in FIG. 11 , the electric potential is reversed in the air sterilizer 1 to perform the water replacement operation.

In this water replacement operation, the computer 61 controls the output unit 65 to notify the start of the water replacement operation through the indicator light of the operation panel 16 (step S31), and stops the normal air sterilization operation (step S32).

Then, the computer 61 starts the operation of the circulation pump 44 (step S33), and starts energizing the electrodes 47 and 48 of the electrolytic cell 46 to generate electrolyzed water containing ozone and hydrogen peroxide (step S34). In this step S34 , the computer 61 applies a voltage between the electrodes 47 and 48 by using the electrode 47 as a cathode electrode and the electrode 48 as an anode electrode. Thus, ozone is generated at the electrode 48 serving as the anode electrode, and hydrogen peroxide is generated at the electrode 47 serving as the cathode electrode.

Here, when the electrolytic cell 46 generates ozone, there is a possibility that a small amount of ozone leaks from the electrolytic cell 46 to the outside, or a small amount of ozone volatilizes in the electrolyzed water discharged from the electrolytic cell 46 . Since ozone is a gas having a peculiar smell, when the smell of ozone leaks out of the casing 11, there is a possibility that the user may feel uncomfortable. Because the smell of ozone is particularly strong, even a very small amount has no effect on the human body, and the smell can be felt.

Thus, in the above-mentioned step S34, although the energization of the electrolytic cell 46 and the operation of the circulation pump 44 are started, the closed state of the vent window 20 remains unchanged, and the fan motor 32 remains stopped. In this way, the odor of ozone hardly leaks to the outside of the air sterilizing device 1, and the indoor environment in which the air sterilizing device 1 is installed can be kept comfortable.

In step S34, the computer 61 stops the energization to the electrodes 47 and 48 after a predetermined time has elapsed after starting energization to the electrodes 47 and 48 of the electrolytic cell 46 (step S35). Electrolyzed water containing ozone and hydrogen peroxide is circulated in the electrolyzed water circulation unit 2 during steps S34 to S35.

Then, the computer 61 opens the drain valve 56 to discharge the water in the water receiving tray 42 to the drain tank 57 (step S34).

After the drain valve 56 is opened, the computer 61 monitors the state of the drain pan float switch 43 provided in the reservoir 42A (step S37). When the water tray float switch 43 is switched to ON (step S37: Yes), the computer 61 judges that the water in the air sterilization device 1 including the water in the water supply tank 41 is fully discharged to the drain tank 57, and the circulation pump 44 is stopped. (Step S38), the drain valve 56 is closed (Step S39).

The computer 61 controls the output unit 65 to notify the drain through the indicator lights of the operation panel 16, etc., and informs the user (step S40) of the situation of replenishing water to the water supply tank 41, and monitors the state of the water receiving tray float switch 43 (step S41) .

When the water supply tank 41 supplemented with water is installed in the air sterilization device 1, water is supplied from the water supply tank 41 to the water receiving pan 42, and the water receiving pan float switch 43 is switched to OFF. Therefore, when the computer 61 detects that the water tray float switch 43 has been turned off (step S41: Yes), it starts normal operation (step S42).

In this way, electrolyzed water containing ozone is generated during the water replacement operation, and by circulating the electrolyzed water in the electrolyzed water circulation unit 2, each part of the electrolyzed water circulation unit 2 can be sterilized and deodorized by the strong oxidation of ozone, keeping clean condition.

Electrolyzed water containing hypochlorous acid is generated by the electrolytic cell 46 during normal operation, and electrolyzed water containing ozone and hydrogen peroxide is generated by reversing the electrodes during water replacement operation, so it becomes active oxygen generated by normal operation. Different active oxygen is used to clean each part of the electrolyzed water circulation part 2. Therefore, the cleanliness of the electrolyzed water circulation part 2 can be maintained more reliably, and the trouble of cleaning each part of the air sterilization device 1 can be greatly saved. In addition, if the concentration of active oxygen during the water exchange operation is controlled to be higher than that during the normal operation by controlling the current supplied to the electrodes 47 and 48, a better cleaning effect can be expected.

The structure of this embodiment can easily switch the type of active oxygen contained in the electrolyzed water by reversing the polarity, so the structure of the air cleaning device 1 will not be complicated.

And by reversing the polarity of the electrodes 47, 48, the scale accumulated on the cathode electrode during normal operation is peeled off from the electrodes and falls off. That is, during normal operation, scale (such as calcium scale such as calcium carbonate and magnesium scale such as magnesium carbonate) caused by inorganic substances (containing ions) contained in the water introduced into the electrolytic cell 46 is particularly deposited on the surface of the cathode side electrode. accumulation. When scale accumulates on the electrodes, the conductivity decreases and it is difficult to continue electrolysis. In the structure of this embodiment, the scale accumulated on the electrodes is removed by reversing the polarity during the water replacement operation, and the water flowing in and out of the electrolytic cell 46 is pushed by the action of the circulation pump 44 to be discharged to the drain tank 57 . Therefore, the scale accumulated in the electrolytic cell 46 can be discharged to the outside of the air cleaning device 1 by performing the water replacement operation.

As mentioned above, each part of the electrolyzed water circulation unit 2 can be cleaned, and at the same time, the frequency of cleaning and maintenance of each part can be greatly reduced, the maintenance becomes easier, and the labor and cost burden of maintenance can be greatly reduced.

Here, the air sterilizing device 1 can change the concentration of active oxygen in the electrolyzed water by controlling the current supplied to the electrodes 47 and 48 . Therefore, in the operation described with reference to FIG. 11 , the electrolyzed water circulation unit can be strongly charged as long as the energization to the electrodes 47 and 48 is controlled to generate active oxygen at a concentration higher than that during normal operation without reversing the polarity of the electrodes 47 and 48 . 2. Each part is cleaned to reliably maintain cleanliness. At this time, since active oxygen (such as hypochlorous acid) is generated at a higher concentration than usual, it is desirable to prevent the smell of the active oxygen from leaking out of the housing 11 . In the action shown in FIG. 11 , since the ventilation window 20 is closed, the leakage of the smell can be prevented. Therefore, there is an advantage of maintaining the comfortable state of the indoor environment where the air sterilizing device 1 is installed, and maintaining cleanliness.

When the electrolytic cell 46 generates ozone and generates high-concentration active oxygen (containing active oxygen other than ozone), it is possible to produce the peculiar smell of these ozone and high-concentration active oxygen, but by closing the air outlet 13 by the vent window 20 The blower fan 31 is also stopped, and the odor is hardly discharged to the outside of the housing 11 . Therefore, the leakage of the smell to the outside of the frame body 11 is reliably suppressed, and the cleanliness of the inside of the air sterilization device 1 can be reliably ensured while maintaining a comfortable indoor environment in which the air sterilization device 1 is installed.

The air sterilizing device 1 can perform a cleaning operation while the above-mentioned normal air sterilizing operation is stopped.

At this time, when the air sterilizing operation of the air sterilizing device 1 stops, the computer 61 controls the timer 63 to start counting the operation stop time (stop time T2). The timer 63 starts timing from zero each time the air sterilization operation stops, and resets the count value to zero according to the control of the computer 61 when the air sterilization operation starts. The timer 63 resets the counter value to zero in accordance with the control of the computer 61 every time the cleaning operation described later is performed.

When the stoppage time counted by the timer 63 reaches the preset time, the computer 61 executes a cleaning operation for generating and circulating electrolyzed water even though the operation is stopped.

This cleaning operation will be described below.

FIG. 12 is a flowchart showing a cleaning operation performed by the air sterilization device 1 .

When the operation of the air sterilizer 1 stops (step S51), the computer 61 controls the timer 63 to start counting of the stop time T2 of the air sterilizer 1 (step S52).

Then the computer 61 drives the ventilation window drive motor 68 to make the ventilation window 20 in the closed state (step S53), and monitors the counted stop time T2 (step S54) by the timer 63. Here, when the stop time T2 exceeds the pre-set time T1 stored in the storage unit 62 (step S54: Yes), the computer 61 detects the state of the water tray float switch 43 (step S55).

When the water tray float switch 43 is turned on (step S55: Yes), that is, when the water level of the water tray 42 is low, the washing operation is not suitable, so the process returns to step S54.

When the water tray float switch 43 becomes not connected (step S55: No), the computer 61 starts the circulation pump 44 (step S56), and then applies a voltage to the electrodes 47, 48 of the electrolytic cell 46 to generate electrolyzed water ( Step S57).

In this way, the electrolytic cell 46 generates electrolyzed water containing active oxygen, and since the electrolyzed water circulates in the electrolyzed water circulation part 2, the drying of the gas-liquid contact member 53 is prevented. In addition, viruses and the like adhering to various parts of the electrolyzed water circulation part 2 including the gas-liquid contact part 53 are inert, bacteria, etc. are sterilized, and foreign matter such as odorous substances are decomposed, etc., maintaining the cleanliness of the electrolyzed water circulation part 2 .

After the computer 61 begins to apply voltage to the electrodes 47, 48, it continues to operate for a predetermined time or a time designated by the operation of the operation panel 16, and then stops applying the voltage (step S58), and the circulation pump 44 is stopped (step S59). That is, the electrolyzed water circulates in the electrolyzed water circulation unit 2 only for a predetermined time or a time designated by operating the operation panel 16 .

Afterwards, the computer 61 sets the stop time T2 counted by the timer 63 to zero (step S60). The timer 63 counts from an initial value (for example, zero), and the computer 61 returns to the operation of step S54.

In this way, the electrolyzed water is generated to wet the gas-liquid contact member 53, and the indoor air is blown to the gas-liquid contact member 53 by the blower fan 31, and the air sterilization device 1 that can perform the air sterilization operation that sterilizes the air During the stop of the air sterilization operation, the cleaning operation is performed every predetermined time, and the electrolyzed water circulation part 2 is circulated to prevent the air-liquid contact member 53 from drying, and to keep each part of the electrolyzed water circulation part 2 in a clean state. As long as this cleaning operation is carried out, for example, when the stop time of each operation reaches 24 hours or every several hours, the drying of the gas-liquid contact part 53 can be prevented, and the gas-liquid contact part 53 can be prevented from being adhered to by electrolytic water. The propagation of bacteria, etc. caused by foreign matter on the 53. In this way, the maintenance of the air sterilizing device 1 during stoppage becomes easy, and the fouling of the electrolyzed water circulation part 2 including the gas-liquid contact member 53 can be prevented with less labor, and the cleanliness of the inside of the air sterilizing device 1 can be maintained. .

Since the fan motor 32 is stopped during the cleaning operation, and only the circulation pump 44 and the electrolytic tank 46 are in operation, the operation sound of the air sterilization device 1 is very small. In addition, before the cleaning operation, the air outlet 13 is closed through the ventilation window 20, so the operation sound of the air sterilization device 1 hardly leaks out of the frame body 11. Therefore, the user does not feel uncomfortable when the cleaning operation is performed, and there is no problem even if the cleaning operation is performed at night, for example. Since the smell caused by the electrolyzed water circulating in the electrolyzed water circulation unit 2 does not leak out of the casing 11 during the cleaning operation, the user's discomfort is not caused by the smell. Therefore, the cleaning operation can be performed without being restricted by the time zone and the installation environment, and the inside of the air sterilization device 1 can be kept clean.

Also in the cleaning operation, electrolyzed water containing a higher concentration of active oxygen than in the normal air sterilization operation can be produced by the electrolytic cell 46 . In this case, each part of the electrolyzed water circulation unit 2 including the gas-liquid contact member 53 can be more reliably sterilized. When high-concentration active oxygen is produced, if the peculiar smell of active oxygen (such as hypochlorous acid) leaks to the outside of the air sanitizer 1, it may cause discomfort to the user. However, in the above-mentioned first embodiment, the louver 20 is set to the closed state before the washing operation, and the fan motor 32 is stopped during the washing operation, and the air blowing by the air blowing fan 31 is not performed. Therefore, the odor caused by the active oxygen does not leak to the outside of the air sanitizing device 1 , so that the user does not feel uncomfortable, and the cleanliness inside the air sanitizing device 1 can be maintained.

The above-mentioned embodiment of the present invention has described the case where the same active oxygen is generated during the cleaning operation as in the conventional air sterilization operation, but the present invention is not limited thereto. For example, electrolyzed water containing ozone can also be generated by the electrolytic cell 46 during the cleaning operation. .

This case will be described below as a second embodiment.

In the second embodiment of the present invention, a case where an ozone cleaning operation is performed instead of the above-mentioned cleaning operation in the air sterilization device 1 will be described.

That is, the computer 61 sets the electrode 47 of the electrolytic cell 46 to a positive potential and applies a voltage between the electrodes 47 and 48 to generate hypochlorous acid having a high sterilizing power from the electrode 47 side. On the other hand, when performing the ozone cleaning operation, the computer 61 reverses the electrodes and applies a voltage between the electrodes 47 and 48 so that the electrode 48 is set to a positive potential. In this way, the electrolytic cell 46 generates ozone having a high sterilizing power from the electrode 48 side, and generates hydrogen peroxide from the electrode 47 side, and the electrolyzed water containing ozone is circulated in the electrolyzed water circulation unit 2 . The purpose of the ozone cleaning operation is to prevent the drying of the gas-liquid contact member 53 and to suppress the growth of bacteria and viruses on the gas-liquid contact member 53, and is performed every predetermined time while the air cleaning device 1 is stopped.

Fig. 13 is a flowchart showing an ozone cleaning operation.

First, when the operation of the air sterilizer 1 stops (step S71), the computer 61 controls the timer 63 to start counting the stop time T2 of the air sterilizer 1 (step S72).

Then the computer 61 drives the ventilation window drive motor 68 to make the ventilation window 20 in the closed state (step S73), and monitors the counted stop time T2 by the timer 63 (step S74). Here, when the stop time T2 exceeds the pre-set time T1 stored in the storage unit 62 (step S74: Yes), the computer 61 detects the state of the water tray float switch 43 (step S75).

When the water tray float switch 43 is turned on (step S75: Yes), that is, when the water level of the water tray 42 is low, the process returns to step S74 because it is not suitable for the ozone cleaning operation.

When the water tray float switch 43 becomes not connected (step S75: No), then the computer 61 starts the circulation pump 44 (step S76), and then applies voltage to the electrodes 47, 48 of the electrolytic cell 46 to generate ozone ( Step S77).

Like this, electrolytic cell 46 produces the electrolyzed water that contains ozone, because this electrolyzed water circulates in electrolyzed water circulation part 2, so prevent the drying of gas-liquid contact part 53, and adhere to each electrolyzed water circulation part 2 that comprises gas-liquid contact part 53 The cleanliness of the electrolyzed water circulation unit 2 is maintained by partially inerting viruses, etc., sterilizing bacteria, etc., and decomposing foreign substances such as odorous substances.

After the computer 61 starts to apply the voltage to the electrodes 47, 48, it only continues to operate for the predetermined time or the time specified by the operation of the operation panel 16, and then stops the voltage application (step S78), and the circulation pump 44 is stopped (step S79) . That is, the electrolyzed water containing ozone is circulated in the electrolyzed water circulation unit 2 only for a predetermined time or a time designated by operating the operation panel 16 .

Afterwards, the computer 61 sets the stop time T2 counted by the timer 63 to zero (step S80). The timer 63 counts from an initial value (for example, zero), and the computer 61 returns to the operation of step S74.

According to this second embodiment, drying of the gas-liquid contact member 53 is prevented as in the above-mentioned first embodiment, and each part of the electrolyzed water circulation unit 2 can be kept clean by the action of electrolyzed water. And by generating electrolyzed water containing ozone and circulating in the electrolyzed water circulation part 2, each part of the electrolyzed water cycle part 2 can be sterilized and deodorized by strong oxidation of ozone, and kept clean. In particular, electrolyzed water containing hypochlorous acid is generated by the electrolytic cell 46 in normal air sterilization operation, and electrolyzed water containing ozone and hydrogen peroxide is generated by inverting the electrodes during ozone cleaning operation, so by effectively using A variety of active oxygen with different functions can clean each part of the electrolyzed water circulation part 2, which can be easily maintained, and the cleanliness of the electrolyzed water circulated part 2 can be more reliably maintained.

And in this ozone cleaning operation, because fan motor 32 stops, only circulation pump 44 and electrolytic cell 46 are in action, so the operation sound of air sterilization device 1 is very small, can not give user with unpleasant feeling and keep air sterilization device 1 Internal cleanliness.

Here, since ozone is a gas with a characteristic strong smell, even a very small amount that does not affect the human body may cause discomfort to the user due to the smell of ozone. But above-mentioned embodiment is owing to just make vent window 20 be in closed state before carrying out ozone cleaning operation, so, the smell of ozone can hardly leak to the outside of air sterilizing device 1, can keep the indoor environment that is provided with air sterilizing device 1 comfortable. And since the fan motor 32 is stopped during the ozone cleaning operation, the blower fan 31 does not blow air. Therefore, the circulation of the air inside and outside the frame body 11 is greatly suppressed, and the leakage of the smell to the outside of the frame body 11 is more reliably and effectively suppressed.

Therefore, similarly to the cleaning operation of the above-mentioned first embodiment, the ozone cleaning operation can be performed regardless of the time zone and the installation environment, and the cleanliness of the inside of the air cleaning device 1 can be maintained.

And because the above structure can easily switch the type of active oxygen contained in the electrolyzed water by reversing the polarity of the electrodes 47, 48 during the ozone cleaning operation, it is possible to easily clean the air cleaning device 1 without complicating the structure. Make full use of electrolyzed water containing ozone and electrolyzed water containing other active oxygen.

In addition, by reversing the polarity of the electrodes 47 and 48 during the ozone cleaning operation, the scale accumulated on the cathode electrode during the air sterilization operation is peeled off from the electrode and falls off.

Scale (such as calcium scale such as calcium carbonate, magnesium scale such as magnesium carbonate) caused by inorganic substances (containing ions) contained in the water introduced into the electrolytic cell 46 during the air sterilization operation is particularly transferred to the surface of the cathode side electrode. accumulation. When scale accumulates on the electrodes, the conductivity decreases and it is difficult to continue electrolysis. Since the air sterilizing device 1 removes the scale accumulated on the electrodes by reversing the polarity during the ozone cleaning operation, it is possible to prevent the electrolysis efficiency of the electrodes 47 and 48 from being lowered. Therefore, the frequency of maintenance including cleaning the electrodes 47 and 48 can be greatly reduced, and the labor and cost burden of maintenance can be greatly reduced.

In the first and second embodiments described above, the structure in which the water stored in the water supply tank 41 is electrolyzed and circulated is described, but the present invention is not limited thereto, and the structure in which water can be supplied from the outside at any time is also possible.

Hereinafter, this structure will be described as a third embodiment.

Fig. 14 is a perspective view showing the appearance structure of the air sterilization device 10 according to the third embodiment of the present invention. FIG. 15 is a perspective view showing the internal structure of the air sterilization device 10 .

In this air sterilizing device 10 , in the air sterilizing device 1 described in the first and second embodiments, a water supply unit 70 is provided instead of the water supply tank 41 , and a drain unit 80 is provided instead of the drain tank 57 .

The water supply unit 70 supplies water to the electrolyzed water circulation unit 2 from, for example, a water supply pipe 75 connected to a water supply pipe. The drain unit 80 drains the water in the electrolyzed water circulation unit 2 to, for example, a drain pipe 85 connected to a sewer pipe.

As shown in FIG. 15 , the water supply part 70 includes: a water guide pipe 71 from the side wall of the frame body 11 to the top of the water receiving tray 42 , a water supply valve 72 for opening and closing the water guide pipe 71 , and a spout opening downward at the front end of the water guide pipe 71 . Nozzle 74. The lower end of the water discharge port 74 is located at a height not submerged by the water surface of the water receiving pan 42, and is preferably located above the storage portion 42A. A connection port 73 is formed at the root end of the water guide pipe 71 , and communicates with the water supply pipe 75 through the connection port 73 . The connection port 73 is fixed to a plate constituting a side surface of the housing 11 .

On the other hand, the drain unit 80 includes a discharge pipe 81 communicating with an opening (not shown) provided on the bottom surface of the storage unit 42A, a drain valve 82 for opening and closing the discharge pipe 81 , and a connection port formed at the front end of the discharge pipe 81 . 83. The connection port 83 is fixed to a plate constituting the side surface of the housing 11 and communicates with the drain pipe 85 .

The water supply valve 72 is opened and closed under the control of the computer 61 of the control unit 60 ( FIG. 8 ) to supply water to the electrolyzed water circulation unit 2 . Specifically, when the water level of the water receiving tray 42 decreases and the water receiving tray float switch 43 ( FIG. 8 ) is switched to ON, the computer 61 opens the water supply valve 72 to feed water. Then when the computer 61 detects that the water receiving tray float switch 43 is switched to off, the water supply valve 72 is closed to terminate the water supply.

The drain valve 82 is opened and closed under the control of the computer 61 . When the air sterilizing operation of the air sterilizing device 1 reaches a predetermined time, or when the operation stop time of the air sterilizing device 1 reaches a predetermined time, or at a predetermined time, the computer 61 opens the drain valve 82, and the The water stored in the water receiving tray 42 is discharged. Here, the computer 61 can also close the drain valve 82 and terminate the drainage when the water level of the water tray 42 is lowered to a predetermined level when the water tray float switch 43 is turned on, or the water tray float switch 43 can be turned on. It is connected and after the specified time has elapsed, the drain valve 82 is closed.

The computer 61 can also open the water supply valve 72 for water supply during the period of opening the drain valve 82 for drainage, and at the same time activate the circulation pump 44 to circulate the water in the electrolyzed water circulation part 2 .

The air sterilizing device 10 of this third embodiment can use the required amount of water at any time without being restricted by the capacity of the water supply tank 41, so even if the water in the electrolytic water circulation part 2 is lost due to evaporation or the like, there is no need for the user to Carry out water supply operation. And even if the water circulating in the electrolyzed water circulation part 2 is no longer fresh, the user does not need to perform any operations related to drainage, and fresh water can be circulated in the electrolyzed water circulation part 2 by performing drainage and water supply. In this way, continuous long-term operation can be performed only by performing maintenance at a very low frequency.

In particular, the air cleaning device 10 of the third embodiment can perform the cleaning operation described in the first embodiment and the ozone cleaning operation described in the second embodiment. In this way, the cleanliness of the electrolyzed water circulation unit 2 can be maintained without inconvenience to the user even if the air sterilization device 10 is not in the air sterilization operation for several weeks to several months or longer. Therefore, maintenance can be easily performed, and the inside of the air sanitizer 1 can be kept clean with little labor.

When the air cleaning device 10 carries out the ozone cleaning operation, since the scale is peeled off from the electrodes 47, 48 in the electrolytic cell 46 as mentioned above, and the peeled scale etc. can be discharged through the drain 80, it can greatly reduce Labor for maintenance of the air sterilizing device 1 .

The above-mentioned first to third embodiments represent specific examples to which the present invention is applied, and of course, appropriate changes can be made without departing from the spirit of the present invention.

For example, in the above embodiment, two pairs of electrodes 47 and 48 are set as counter electrodes, and the type of active oxygen contained in the electrolyzed water is switched to hypochlorous acid, ozone or peroxide by reversing the polarity of each electrode 47, 48. Hydrogen, but the electrode structure provided in the electrolytic cell 46 is not limited to this. For example, one electrode 48 may be provided while two electrodes 47 are connected in parallel in the electrolytic tank 46 , so that three electrodes may be arranged in the electrolytic tank 46 . Also can be provided with two the 3rd electrodes that often are applied negative potential in electrolyzer 46, as the structure that electrode 47, electrode 48 and two 3rd electrodes are respectively paired to between electrode 47 and the 3rd electrode and electrode 48 A voltage is applied to the third electrode to electrolyze water. Here, platinum, carbon (C), stainless steel [Fe—Cr—(Ni) series alloy], or the like may be used as the third electrode. In such a structure where a new third electrode is provided and the switching electrode 47 and the electrode 48 are paired with the third electrode, it is preferable to alternately switch the electrode paired with the third electrode into the electrode 47 and the electrode 48 . By switching the paired electrodes of the third electrode alternately to the electrode 47 and the electrode 48 in this way, hypochlorous acid and ozone are generated as active oxygen, which is particularly preferable.

Also can a plurality of electrolyzers 46 be set in air degerming device 1,10, in any electrolyzer 46, electrode 47 and the 3rd electrode are inserted as opposite electrode, in other electrolyzer 46, electrode 48 and the 3rd electrode are inserted. The type of active oxygen contained in the electrolyzed water dripped or soaked into the gas-liquid contact member 53 is switched by appropriately switching the electrolytic cell 46 for electrolyzing tap water as a counter electrode is inserted.

The electrodes provided in the electrolytic cell 46 may be plate electrodes, rods or other shapes.

The above-mentioned embodiments generate active oxygen by electrolyzing the tap water in the electrolytic cell 46 and utilizing the chlorine ions contained in the tap water, but it is also possible to have an ozone generating device that generates ozone through air discharge, and dissolve the ozone generated by the ozone generating device. A structure in which water is supplied to the gas-liquid contact member 53 . The ozone generating device at this time may be configured to supply the generated ozone to the electrolytic cell 46, or may be configured to supply the ozone generated by the ozone generating device to the electrolyzed water generated in the electrolytic cell 46 to dissolve the ozone in the electrolyzed water. According to this structure, even if the tap water introduced into the electrolytic cell 46 has low ions and it is difficult to generate ozone by electrolyzing tap water, electrolyzed water containing ozone as active oxygen can be generated and dripped or wetted on the gas-liquid contact member. .

In each of the above-described embodiments, the air sterilization operation can be performed using electrolyzed water containing ozone and hydrogen peroxide as the state where the polarity of the electrodes 47 and 48 is reversed from the beginning. At this time, even if the water introduced into the electrolytic cell 46 has a low concentration of ions, the air can be sterilized without any problem.

Claims (14)

1. An air sterilizing device comprising: an electrolyzer that electrolyzes water to generate electrolyzed water, a gas-liquid contact member that is wetted by the electrolyzed water generated by the electrolyzer, and a feeder that sends air to the gas-liquid contact member. The wind fan is characterized in that it has: Circulation path, supply the electrolyzed water to the gas-liquid contact part, receive and store the electrolyzed water flowing down from the gas-liquid contact part through the water receiving tray, pump up the stored electrolyzed water to the gas-liquid contact part again Liquid contact parts supply; a drain pipe branching off from said circulation path; Open and close the water stop valve of the drain pipe; A drain tank that receives and stores electrolyzed water discharged from the drain pipe when the water stop valve is opened. 2. The air sterilizing device according to claim 1, wherein a part of the water receiving tray is formed with a deeper bottom storage portion, and the drain pipe is located from the storage portion of the water receiving tray to the A pipe extending from the drain tank below the drain pan. 3. The air sterilization device according to claim 1, characterized in that, possesses: A timing unit for timing the running time; A control unit that opens the water stop valve when the operation time counted by the timer unit reaches a predetermined time. 4. The air sterilization device according to claim 3, wherein the electrolyzer is a structure that generates electrolyzed water by applying a voltage between a plurality of electrodes, During normal operation, the control unit applies a voltage between the plurality of electrodes of the electrolytic cell to generate electrolyzed water, and blows air through the blower fan while circulating the electrolyzed water through the circulation path. When the water stop valve is opened to discharge water, the polarity between the plurality of electrodes is first reversed to generate the electrolyzed water, and the electrolyzed water is circulated in the circulation path, and then the water stop valve is turned on. Open. 5 . The air sterilizing device according to claim 4 , wherein the control unit has a function of inverting the polarity between the plurality of electrodes included in the electrolytic cell to electrolyze water. 6 . 6. The air sterilizing device according to claim 5, further comprising: an air outlet through which the air of the gas-liquid contacting part is discharged and a cover capable of closing the air outlet, The control unit reverses the polarity between the plurality of electrodes included in the electrolytic cell in a state where the cover closes the exhaust port. 7. An air sterilization device comprising: an electrolytic cell that electrolyzes water to generate electrolyzed water, a gas-liquid contact member that is wetted by the electrolyzed water generated by the electrolytic cell, and a blower that sends air to the gas-liquid contact member. The fan is characterized by comprising: a circulation path for circulating and supplying the electrolyzed water to the gas-liquid contact member, and a control unit, The control unit controls the air sterilizing device to perform the operation of generating electrolyzed water by the electrolytic cell, circulating the electrolyzed water in the circulation path, and sending the electrolyzed water to the gas-liquid contact member by the blower fan. An air sterilization operation in which air is blown to sterilize the air; and a washing operation in which electrolyzed water is generated by the electrolytic cell and circulated through the circulation path while the air supply fan is stopped. 8. The air sterilizing device according to claim 7, wherein the control unit performs the cleaning operation every predetermined time after the air sterilizing device stops the air sterilizing operation. 9 . The air sterilization device according to claim 7 , wherein the control unit performs the cleaning operation while stopping the blower fan. 10 . 10. The air sterilization device according to claim 7, wherein the control unit controls the electrolytic cell during execution of the cleaning operation to generate Active oxygen Different active oxygen. 11. The air cleaning device according to claim 10, wherein the active oxygen generated by the electrolytic cell during the cleaning operation is ozone. 12. The air sterilization device according to claim 7, wherein the control unit controls the electrolytic cell to have a concentration different from that of the air sterilization operation during execution of the cleaning operation. to generate active oxygen. 13. air degerming device as claimed in claim 11, is characterized in that, the vent window that can close this discharge port is set at the discharge port that the air that described blower fan sends out is discharged outside the device, The control unit executes the cleaning operation in a state where the vent window closes the discharge port. 14. The air sterilizing device according to claim 7, further comprising: a water supply unit that supplies water from an external water supply pipe to the circulation path, and a drainage branch that branches from the circulation path to discharge the electrolyzed water. department.

Images