JP2021060187A - Space sterilization and purification device - Google Patents

Abstract

To provide a space sterilization and purification device for sterilizing and purifying a space using hypochlorous acid water, which can prolong the service life of electrodes to maintain electrolysis operation for a long term.SOLUTION: A space sterilization and purification device exhausts air from an exhaust port to the outside of a housing to sterilize and purify a space around the housing, the air being subjected to dust removal by a dust removal filter, and containing hypochlorous acid volatilized from electrolytic hypochlorous acid water by passing through a sterilization filter that has absorbed the electrolytic hypochlorous acid water generated by an electrolytic hypochlorous acid water generation device and being in gas-liquid contact with the electrolytic hypochlorous acid water. In the space sterilization and purification device, electrodes each comprise an electrode body made of titanium or a titanium alloy, and a catalyst layer having a noble metal component adhering to the surface of the electrode body; and control means is configured to execute control of energizing the electrodes so that current directions are alternately reversed with an energization stop period in between, and control of reversing the direction of energization across the electrodes during the period when the energization across the electrodes is stopped.SELECTED DRAWING: Figure 20

Description

Detailed description of the invention

The present invention relates to a space sterilization cleaning device that sterilizes and cleans the surrounding space in which the device is installed.

Various ideas have been incorporated into air purifiers and humidifiers. For example, in the humidifier described in Patent Document 1, the water in the humidifying water tank is electrolyzed to generate electrolyzed water containing hypochlorous acid, and this hypochlorous acid is used for disinfecting the water in the water tank and the humidifying filter. doing. In the humidifier described in Patent Document 2, a part of the humidifying water is electrolyzed to generate electrolyzed water, and this electrolyzed water is made into a mist, placed on humidified air and dissipated to the outside of the machine, thereby indoors. It is useful for disinfecting and deodorizing air.

In the case described in Patent Document 1, the humidified part can be sterilized, but the indoor air cannot be sterilized or deodorized. In the case described in Patent Document 2, the indoor air can be sterilized and deodorized, but due to its structure, the indoor air cannot be sterilized and deodorized unless it is humidified. Therefore, a patent application using both Patent Documents 1 and 2 as prior art has been filed as Patent Document 3 by the same applicant as the applicants of both Patent Documents 1 and 2.

Japanese Unexamined Patent Publication No. 2006-57995 (International Patent Classification: F24F6 / 00) Japanese Patent Application Laid-Open No. 2009-216320 (International Patent Classification: F24F6 / 16, F24F7 / 00, C02F1 / 46) Japanese Patent Application Laid-Open No. 2012-52698 (International Patent Classification: F24F6 / 00, F24F6 / 06, F24F11 / 02, C02F1 / 46, A61L9 / 01)

Here, in the field of air purifiers, space sterilization and cleaning devices that sterilize, dust, and clean the surrounding space have been provided, and in particular, sterilization and dust removal in indoor spaces have been performed. The spatial properties were improved. As a part of this improvement, various techniques for improving the performance of the air purifier have been proposed by carrying out energization control in which energization is performed between a pair of electrodes that perform electrolysis. In particular, in the humidifier described in Patent Document 3, in [0060], "The control unit 60 has a large space between the electrodes 62 so as not to lower the concentration of hypochlorous acid in the electrolyzed water below a certain level. Control is performed by repeating the flow of a current and a small current for a certain period of time. In the example shown in FIG. 8, a current of 300 mA is passed for 10 minutes, and then a current of 150 mA is passed for 10 minutes with a 10-minute current stop period in between. The cycle of passing a current of 300 mA for 10 minutes is repeated with a current stop period of 10 minutes again. The current stop period is obtained by switching the polarity switching output and setting both IN1 and IN2 to H or L. It is described that the control to that effect is performed.

However, the control of energization of the electrodes, which Patent Document 3 aims at, is only for the purpose of "preventing the concentration of hypochlorous acid in the electrolyzed water from being lowered below a certain level", and is never an air purifier. There is no description about improving the performance of the electrode, for example, extending the life of the electrode and maintaining the electrolytic operation for a long period of time, and it is not intended for this purpose, and improvement from this viewpoint is strongly requested. Was there.

According to the present invention, in a space sterilization and cleaning device that sterilizes and cleans a space using hypochlorous acid water, the life of the electrodes can be extended and the electrolytic operation can be maintained for a long period of time. It is an object of the present invention to provide a cleaning device.

In order to achieve the above object, the space sterilization cleaning device according to the present invention includes, according to the description of claim 1, an air passage for communicating the intake port and the exhaust port formed in the housing with each other.
It is provided with at least a pair of electrodes arranged in the housing and immersed in stored salt-containing water, and the salt-containing water is electrolyzed to dissolve hypochlorous acid and hypochlorous acid. Electrolytic means for producing hypochlorous acid water and
A sterilization filter arranged so as to allow ventilation in the air passage,
The sterilization filter is impregnated with the electrolytic hypochlorous acid water generated by the electrolytic means, and the sterilization means for containing the hypochlorous acid volatilized from the electrolytic hypochlorous acid water.
An air blowing means that is introduced from the intake port, passes through the sterilization filter, and generates an air flow exhausted from the exhaust port in the air passage.
It is provided with a control means for controlling the current flowing between the electrodes of the electrolytic means.
The air passing through the sterilization filter is sterilized by hypochlorous acid contained in the sterilization filter and electrolyzed hypochlorous acid water in contact with gas and liquid, and the air containing hypochlorous acid is exhausted. In a space sterilization cleaning device that exhausts air from the mouth to the outside of the housing and sterilizes the surrounding space of the housing with the hypochlorous acid.
The electrode includes an electrode body made of titanium or a titanium alloy, and a catalyst layer having a noble metal component adhering to the surface of the electrode body.
The control means energizes the electrodes so as to alternately reverse the current direction with an energization stop period in between, and reverses the energization direction of the electrodes during the energization stop period of the electrodes. It is characterized by performing control.

By configuring the space sterilization cleaning device according to claim 1 in this way, control for energizing the electrodes so as to alternately reverse the current direction with an energization stop period in between, and energization of the electrodes By executing control to reverse the direction of energization of the electrode during the stop period, the overcharged charge charged on the electrode based on the surge current flowing through the electrode impairs the state of adhesion of the catalyst layer to the electrode body. It is possible to prolong the life of the electrode by preventing the above.

Further, according to the second aspect of the space sterilization cleaning device according to the present invention, the control means causes the current flowing between the electrodes for the length of the period during which the energization of the electrodes is stopped. It is characterized by executing control that is set longer than the energizing time of.

By configuring the space sterilization cleaning device according to claim 2 in this way, the overcharged charge is sufficiently discharged while the energization of the electrode is stopped, and the catalyst layer due to the overcharged charge is discharged. It is possible to effectively prevent the state of adhesion to the electrode body from being impaired.

Further, according to the description of claim 3, the space sterilization cleaning device according to the present invention has a surge current flowing through the electrode for a length of time during which the control means stops energization of the electrode. It is characterized in that the charge charged in the electrode is set to the time for spontaneous discharge based on the above.

By configuring the space sterilization cleaning device according to claim 3 in this way, the overcharged charge is naturally discharged while the energization of the electrode is stopped, and the electrode of the catalyst layer due to the overcharged charge is discharged. It is surely prevented that the state of adhesion to the main body is impaired.

Further, according to the fourth aspect of the space sterilization cleaning device according to the present invention, the control means receives the electric charge charged on the electrode based on the surge current flowing through the electrode during the energization stop period. The feature is that the control for setting the time for spontaneous discharge is executed in the state where the normal mode is set.

By configuring the space sterilization cleaning device according to claim 4 in this way, when the normal mode is set in the device, it is possible to prevent the state of adhesion of the catalyst layer to the electrode body due to overcharged charges from being impaired. The energization control to the electrode is executed in this state, and the life of the electrode can be surely extended.

Further, in the space sterilization cleaning device according to the present invention, according to the description of claim 5, the control means causes the length of the period during which the energization to the electrodes is stopped to flow between the electrodes. It is characterized in that it is set to a time shorter than the energizing time of.

In this way, by configuring the space sterilization cleaning device according to claim 5, it is possible to sufficiently secure the energization time of the current flowing between the electrodes, that is, the electrolysis operation execution time, and high-concentration electrolysis. The production of hypochlorous acid water will be guaranteed.

Further, according to the sixth aspect of the space sterilization cleaning device according to the present invention, the control means causes the current flowing between the electrodes for the length of the period during which the energization of the electrodes is stopped. It is characterized in that the control to be set shorter than the energization time of is executed in the state where the strong mode is set.

By configuring the space sterilization cleaning device according to claim 6 in this way, when the strong mode is set in the device, the production of high-concentration electrolytic hypochlorous acid water is promoted, and the sterilization filter is used. The sterilization efficiency will be improved.

Further, the space sterilization cleaning device according to the present invention is characterized in that, according to the description of claim 7, the control means executes a control for setting the energization amounts in which the energization directions are reversed to be the same as each other. It is supposed to be.

By configuring the space sterilization cleaning device according to claim 7 in this way, hypochlorite water as electrolyzed water generated between both electrodes can be generated with maximum efficiency. ..

Further, the space sterilization cleaning device according to the present invention is characterized in that, according to the description of claim 8, the catalyst layer is formed of a noble metal containing a platinum component.

By configuring the space sterilization cleaning device according to claim 8 in this way, it is possible to reliably cope with the change in polarity between the electrodes.

Further, the space sterilization cleaning device according to the present invention is characterized in that, according to the description of claim 9, the noble metal containing the platinum component is a platinum-iridium alloy.

By configuring the space sterilization cleaning device according to claim 9 in this way, it is possible to reliably cope with the change of polarity between the electrodes.

Further, the space sterilization cleaning device according to the present invention is characterized in that, according to the description of claim 10, a plurality of pairs of the electrodes are provided.

By configuring the space sterilization cleaning device according to claim 10 in this way, it is possible to set the concentration of the electrolyzed hypochlorous acid water generated by the electrolyzing means to be higher.

According to the present invention, in a space sterilization cleaning device that sterilizes and cleans a space using hypochlorite water, the life of the electrodes can be extended and the electrolysis operation can be maintained for a long period of time. A fungus cleaning device will be provided.

It is a perspective view which looked at the appearance of the space sterilization cleaning apparatus which concerns on embodiment of this invention from the front. It is a perspective view which looked at the appearance of the space sterilization cleaning apparatus of FIG. 1 from the rear. It is an exploded perspective view which shows the internal structure of the space sterilization apparatus of FIG. It is a vertical cross-sectional view of the space sterilization cleaning apparatus of FIG. It is a vertical cross-sectional view of the space sterilization cleaning apparatus of FIG. 1, in which the viewpoint is placed in the direction opposite to that of FIG. It is a horizontal sectional view of the space sterilization cleaning apparatus of FIG. It is a perspective view of the water receiving pan of the space sterilization device holding state, which is inserted into the housing of the space sterilization cleaning device of FIG. 1, and the member inside the housing combined with the water receiving pan. It is a vertical cross-sectional view of the space sterilization cleaning apparatus of FIG. 1, and is the cross-sectional view in the direction perpendicular to FIGS. 2 and 3. It is a vertical cross-sectional view of the water receiving pan in the state of holding the space sterilizer. It is a vertical cross-sectional view of the water receiving pan in the state of holding the space sterilizer, and is cross-sectional view at the position of line AA of FIG. It is a vertical cross-sectional view of a water receiving pan in a state of holding an air sterilizer, and is a cross-sectional view taken at the position of line BB in FIG. It is a perspective view of the water receiving pan in the state of not holding the air sterilizer. It is a top view of the water receiving pan in the state of holding the air sterilizer. It is a top view of the water receiving pan in a state where the air sterilizer is not held. It is a vertical cross-sectional view of the water receiving pan in the state of not holding the air sterilizer. It is a perspective view of the blower seen from the back side. It is a vertical cross-sectional view of the space sterilization cleaning apparatus similar to FIG. 6, and is the figure which shows the viewpoint in the direction opposite to FIG. It is sectional drawing which shows typically the structure of an electrode, (A) shows a pair of electrode configurations, (B) shows two pairs of electrode configurations, respectively. It is a system diagram which shows the schematic structure of the control device. FIG. 19 is a diagram showing the output state of the electrode output output from the electrode drive circuit of the control device shown in FIG. 19 to both electrodes. FIG. 19A is an output state when the normal mode is set, and FIG. 19B is a strong diagram. The output state when the mode is set is shown respectively.

Hereinafter, the configuration of one embodiment of the space sterilization cleaning device according to the present invention will be described in detail with reference to FIGS. 1 to 20 of the accompanying drawings.

First, the terms in this embodiment will be described as follows. First, the "space" used in this embodiment refers to the surrounding space in which the space sterilization cleaning device 10 of this one embodiment is installed, and is not only the space as an area but also the surrounding space. It shall also include existing articles. In addition, "sterilization" (sterilization in a broad sense) used in this one embodiment means sterilization of bacteria floating in the surrounding space where it is installed (sterilization in a narrow sense), inactivation of viruses, and existence in the surrounding space. Sterilization of bacteria adhering to the surface of the article (sterilization in a narrow sense) and inactivation of viruses, and sterilization of bacteria trapped in a filter through which air taken in from the surrounding space taken into the device 10 passes. It means sterilization in a narrow sense) and inactivation of the virus. Further, "cleaning" used in this embodiment means removing house dust, cigarette smoke, fine dust of PM2.5, odors such as pets and body odors existing in the surrounding space. In addition, "tap water" used in this one embodiment is a term defined as a subordinate concept of "water containing salt" as a superordinate concept.

As shown in FIGS. 1 to 3, the space sterilization and cleaning device 10 of this embodiment includes a housing 12 that is flat in the front-rear direction and whose front surface is completely open, and the housing 12 is opened. It is provided with a front cover 14 that covers the entire front surface so as to be openable. In the following description, the orientation expression used in the description of the housing 10 is defined as the left side of the paper surface and the right side of the paper surface in FIG. The directional expressions used to explain the other components shall follow this.

As shown in FIGS. 1 and 3, an operation panel 16 is arranged in front of the upper surface of the housing 10. On the operation panel 16, a group of switches for inputting various commands and a group of lamps for displaying the operating status and other information of the space sterilization and cleaning device 10 are arranged. The switch group is composed of a membrane switch, and the lamp group is composed of a light emitting diode (LED).

Further, as shown in FIG. 3, a slit-shaped intake port 18 extending in the lateral direction is provided on the bottom edge of the front surface of the front cover 14, and recesses extending in the vertical direction are provided on both side edges thereof. The shape of the intake port 18 is formed, and as shown in FIGS. 1 and 2, the exhaust port 20 is formed behind the upper surface of the housing 12. An upper louver 21 that opens the exhaust port 20 so as to be able to close the exhaust port 20 is attached to prevent fingers and the like from being inserted from the exhaust port 20 and prevent dust from entering the device.

As shown in FIGS. 4 and 5, an air flow path (air passage) 22 having an intake port 12 at one end and an exhaust port 20 at the other end is formed inside the housing 12. In the air flow path 22, an air purifier 24, an air sterilizer 26, and a blower 28 are arranged in this order from the upstream side starting from the intake port 18 to the downstream side ending from the exhaust port 20. There is.

As specifically shown in FIG. 3, the air purifying device 24 is arranged on the most upstream side of the air flow path 22, and has coarse dust in the outside air (air) introduced (intaken) from the intake port 18 into the device 10. Fine dust consisting of a deodorizing filter 30 that removes house dust and the like and deodorizes odor through activated carbon, and a PM2.5 class HEPA filter interposed between the deodorizing filter 30 and the opening of the housing 12. The dust removal filter 32 for use and the pollen filter 33 for adsorbing pollen are provided on the front surface (the surface on the upstream side in the ventilation direction) of the dust removal filter 32 over the entire surface, and are configured as a triple structure. The pollen filter 33 is made of a fairly thin mesh material, cannot independently hold its shape, and is attached while being sandwiched between the deodorizing filter 30 and the dust removing filter 32. In FIG. 3, for convenience, it is drawn in a state of being attached to the front surface of the dust removal filter 32.

The blower 28 forms an air flow that is sucked in from three intake ports 18 and discharged from the exhaust port 20. The sirocco fan 34, the motor 36 that rotates the sirocco fan 34, and the fan that surrounds the sirocco fan 34. It is configured to include a casing 38. The fan casing 38 is formed with a discharge port 38a (the shape is best shown in FIG. 16) connected to the exhaust port 20.

Next, the structure of the air sterilizer 26 will be described in detail with reference to FIGS. 4 to 17. The air sterilizer 26 is provided with a water supply device 40 that supplies tap water to the air sterilizer 26. The water supply device 40 is configured around a drawer-type water receiving pan 42 that is detachably inserted from the right side surface of the housing 12. The right side surface of the water receiving pan 42 and the cover 44 detachably attached to the right side surface thereof form a part of the outer shell of the housing 12. A recess 46 for hanging the operator's hand is formed on the right side surface of the water receiving pan 42.

As shown in FIGS. 7 to 12, the water receiving pan 42 includes a sterilization mechanism 48 (which will be described in detail later) constituting the air sterilization device 26, and a water supply tank 50 in which about 5 liters of tap water is stored. Is configured to support. In addition to storing tap water, salt is mixed in this water supply tank in order to maintain a high concentration of electrolyzed hypochlorous acid. Originally, chlorine is inevitably mixed in tap water, and the hypochlorous acid produced by this device is made from chlorine originally mixed in this tap water. However, since the chlorine concentration differs depending on the regional waterworks bureau, salt is mixed in to ensure the minimum chlorine concentration for producing hypochlorous acid.

Purified salt for home use is sufficient as the salt, and the amount of the salt mixed is, for example, about half a teaspoon per 5 liters of tap water in order to produce a high concentration (35 ppm) of hypochlorous acid. Needless to say, in tap water having a high chlorine concentration, it may not be necessary to mix salt. On the other hand, when using this space sterilization cleaning device 10 in a foreign country, especially in the Middle Eastern countries where purified water is used as tap water, tap water does not contain salt, so it is essential to mix salt. Become.

As shown in FIGS. 3 and 6, the right end of the water receiving pan 42 is untreated to receive tap water (hereinafter, referred to as tap water at the end) additionally mixed with salt supplied from the water supply tank 50. A water storage tank 52 is formed. The untreated water storage tank 52 is formed with a protrusion 54 that pushes open a valve (not shown) of the water supply tank 50.

When the water supply tank 50 containing tap water is set on the untreated water storage tank 52 of the water receiving pan 42 in this way, a valve (not shown) of the water supply tank 50 is pushed open by the protrusion 54, and a predetermined water level is set as described later. (The water level line WL shown in FIGS. 9 to 11) is configured so that tap water is supplied to the water receiving pan 42.

As shown in FIG. 14, in the water receiving pan 42, in addition to the untreated water storage tank 52, the hypochlorite water generation water storage tank 56 and the sterilization water storage tank 58 are each partitioned by partition walls. ing. The water tank 56 for producing hypochlorous acid water is a tank for storing untreated water (tap water) supplied from the water supply tank 54, which is converted into hypochlorous acid water by electrolysis, and is used for sterilization. The water storage tank 58 is for storing the hypochlorous acid water from the hypochlorite water generation water storage tank 56 as sterilization water to be supplied to the air sterilization device 26.

A first communication portion 52a is formed between the untreated water water tank 52 and the hypochlorous acid water generation water tank 58, and the hypochlorous acid water generation water tank 56 and the sterilization water tank 58 are formed. A second communication portion 56a is formed between the two. The water level of each water tank is kept the same by these communication portions 52a and 56a. The communication portions 52a and 56a are each composed of small holes penetrating the partition wall.

At the left end of the hypochlorite water generation water tank 56, untreated water (tap water) that flows from the untreated water water storage tank 52 into the hypochlorite water generation water tank 56 through the communication portion 52a is electrolytically treated. A hypochlorous acid water generator 60 for generating electrolytic hypochlorous acid water is arranged. The hypochlorous acid water generation device 60 is a control device that applies a predetermined voltage between a pair of electrodes 62 immersed in water in a water tank 56 for generating hypochlorous acid water and a predetermined voltage between both electrodes 62 to pass an electric current. It is configured with 64 (which will be described in detail later).

As shown in FIG. 11, a connector 66 for supplying an electric current to the hypochlorite water generator 60 is attached to the outer surface of the left end of the water receiving pan 42. Here, when the water receiving pan 42 is pushed all the way into the housing 12, the connector 66 engages with a connector (not shown) provided inside the housing 12, and is connected to a power supply and a control device 64 (not shown). Power can be supplied to the chlorinated water generator 60.

On the other hand, as shown in FIG. 12, the water receiving pan 42 is paired from the upper end of the side wall on the front side of the water tank 58 for sterilization and the upper end of the side wall on the front side of the water tank 56 for producing hypochlorous acid water. The columns 68 are erected so as to face each other. A U-shaped bearing portion 70 that opens upward is formed at the upper ends of the surfaces of the columns 68 that face each other. A support shaft 72e (described later) of the sterilization device 48 is rotatably supported on both bearings 70.

Subsequently, the structure of the sterilization mechanism 48 as the main component of the air sterilization device 26 will be described. The sterilization mechanism 48 includes a wheel 72 shaped like a water wheel. The wheel 72 has a hub 72a at the center and a rim 72b at the periphery, and has a structure in which the hub 72a and the rim 72b are firmly connected by a plurality of front spokes 72c and a plurality of rear spokes 72d.

More specifically, as shown in FIG. 8, the wheel 72 includes a hubcap 721 having a front spoke 72c, a rim 72b, and an inner hub 72a1, a rear spoke 72d, an outer hub 72a2, and a later description. It is configured to include a wheel cap 72m having an input gear 72f, and is configured by fitting the wheel cap 72m to the wheel base 721 and fitting and connecting the hubs 72a1 and 72a2 to each other. The hub 72a is a combination of the inner and outer hub portions 72a1 and 72a2.

A support shaft 72e protrudes from the hub 72a in the front-rear direction, and the wheel 72 is rotatably supported around the horizontal axis by dropping both ends of the support shaft 72e into the bearing portions 70 of both columns 68.

The wheel 72 is provided with a sterilization unit 74 (see FIG. 9). The disc-shaped sterilization filter 76 mainly constitutes the sterilization unit 74. The sterilization filter 76 is made of a material having both water retention capacity and ventilation, for example, a net or a non-woven fabric, and is attached to the front surface of the spoke 72d on the back side.

The sterilization filter 76 is not attached as a flat plate, but is attached so as to exhibit a predetermined undulating (three-dimensional) shape. In a preferred embodiment, as shown in FIG. 8, the central portion of the sterilization filter 76 is extruded toward the front spokes 72c to form a conical surface 76a around it.

More specifically, the rear spokes 72d of the wheel 72 are provided with ribs 72i having an inclined surface 72h for forming the conical surface 76a, while the back side of the front spokes 72c faces the inclined surface 72h. A rib 72k having the same inclined surface 72j as the inclined surface 72h is provided at the position. Then, when the wheelbase 721 and the wheel cap 72m are connected, the sterilization filter 76 is sandwiched between the ribs 72i and 72k to form the sterilization filter 76 into a predetermined undulating (three-dimensional) shape that is not flat.

On the rim 72b of the wheel 72, a plurality of buckets 78 (six in the figure) having one side opened are arranged at regular angular intervals. Each bucket 78 may have a separate component attached to the rim 72b, or may be integrally molded with the rim 72b.

All buckets 78 are arranged with their openings oriented in one direction. When the wheel 72 rotates and the bucket 78 moves to the bottom of the rim 72b, the bucket 78 sinks into the sterilized water of the sterilizing water tank 58, and the sterilized water infiltrates into the bucket 78. Then, when the wheel 72 rotates and the bucket 78 rotates so that the opening of the bucket 78 faces upward due to its own weight, the bucket 78 pumps up the sterilized water. As the bucket 78 comes to the top of the rim 72b and its opening turns sideways, the pumped disinfectant water drops. Here, the conical surface 76a of the sterilization filter 76 interferes with the falling path of the sterilization water, and the sterilizing water to be dropped flows out onto the sterilization filter 76.

Here, the motor 80 for rotating the wheel 72 is supported not by the water receiving pan 42 but by the partition wall 12a (see FIG. 7) inside the housing 12. The motor 80 has an output gear 80a. The output gear 80a meshes with the intermediate gear 82 supported by the partition wall 12a like the motor 80. An input gear 72f integrally molded or fixed to the outer peripheral portion of the wheel cap 72m of the wheel 72 meshes with the intermediate gear 82. The input gear 72f meshes with the intermediate gear 82 when the water receiving pan 42 is pushed all the way into the housing 12.

An enclosure 84 (see FIG. 7) surrounds the wheel 72, and the inside of the enclosure 84 communicates with the intake port 38b of the fan casing 38 described above. The enclosure 84 is composed of a partial enclosure 84a integrally molded on the partition wall 12a and a partial enclosure 84b integrally molded on the water receiving pan 42. When the water receiving pan 42 is pushed all the way into the housing 12, the partial enclosure 84b is joined to the partial enclosure 84a, and the enclosure 84 is set to be completed.

In the space sterilization cleaning device 10 configured as described above, the operation of the space sterilization cleaning device 10 will be described next.

First, if sufficient tap water remains in the water supply tank 50, the inside of each of the untreated water storage tank 52, the hypochlorite water generation water storage tank 56, and the sterilization water storage tank 58 is shown in FIG. ~ A state in which water has accumulated up to the height of the water level line WL shown in FIG. 11 respectively. If the water in the water supply tank 50 is low and the water level is lower than the water level line WL, a sensor (not shown) detects it, and the operation panel 16 displays a water shortage indication. When the operator sees the indication of water shortage, the operator removes the cover 44, takes out the water supply tank 50, and replenishes tap water in the water tank 50. When the water supply tank 50 is placed on the water receiving pan 42 after the tap water is replenished, the water level is restored to the height of the water level line WL by the tap water flowing out from the water supply tank 50, and the indication of water shortage disappears. If the removed cover 44 is refitted, the space sterilization and cleaning device 10 can be operated.

On the other hand, when the space sterilization cleaning device 10 is operated in the normal mode described in detail later, power is supplied to the motor 36 of the blower device 28, the electrode 62 of the hypochlorite water generator 60, and the motor 80 of the sterilization mechanism 48. , And these components start operation according to the control contents determined by the control device 64, which will be described in detail later.

After that, when a predetermined voltage (for example, 10 V) is applied to the electrode 62 of the hypochlorous acid water generator 60, the energization control described in detail later is also executed, so that the untreated water storage tank 52 The untreated water (tap water) that has flowed into the hypochlorous acid water generation water tank 56 is electrolyzed (electrolyzed) to become hypochlorous acid water, that is, electrolytic hypochlorous acid water.

Next, prior to the description of the operation, the operation mode set by the space sterilization cleaning device 10 will be described with reference to Table 1 below. As shown in Table 1, the space sterilization cleaning device 10 is in a situation where three modes of "normal mode", "strong mode" and "standby mode" can be set as operation modes. The mode is set by using the mode setting button, although the details of the operation panel 16 provided on the upper surface of the housing 12 are not shown.

The normal mode (A) indicates the normal operation mode of the space sterilization cleaning device 10, and more specifically, the "standard mode", the "automatic mode", the "eco-automatic mode", and the "rapid mode". , "Silent mode" can be set, but it does not constitute the feature of this embodiment, and the control operation is executed in the state where the electrolytic setting is higher-level conceptualized as "normal mode". The description of is omitted.

When the space sterilization and cleaning device 10 is used to sterilize and clean the air in the room where the space sterilization and cleaning device 10 is installed, the normal mode (A) is set on the operation panel 16, and the normal mode (A) is set. ), That is, as the content of the energization control to the electrode 62, as shown in FIG. 20 (A), the length of the period during which the energization to the electrode 62 is stopped is the length of the current flowing between the electrodes 62. Control to set longer than the energization time, specifically, repeated control of "6 minutes energization, 54 minutes pause" is executed, and the energization direction is alternately reversed with an energization stop period in between, so that the energization direction is changed. The reversal is set to be executed during the power stop period. The current value when the electrode 62 is energized is basically 0.248 (A), and although detailed explanation is omitted, the water supply stored in the water tank 56 for producing hypochlorous acid water is omitted. It is set to be changed and controlled in the range of 0.24 (A) to 0.252 (A) according to the salt concentration of water. Further, the voltage value when the electrode 62 is energized is set to be 10 (V) or less. Here, in this normal mode, that is, as the drive control of the motor 80, the rotation of the sterilization filter 76 is set to be a pause of 2 minutes and a rotation of 3 minutes.

On the other hand, in the situation where the strong mode (B) is set on the operation panel 16, the electrolysis setting, that is, the content of the energization control to the electrode 62, is as shown in FIG. Control to set the length of the stopped period to a time shorter than the energization time of the current flowing between the electrodes and 62, specifically, the repetitive control of "9 minutes energization, 1 minute pause" is executed, and at the same time. With an energization stop period in between, the energization directions are alternately reversed, and the reversal of the energization direction is set to be executed during the energization stop period. The current value and voltage value when the electrode 62 is energized are set in the same manner as in the above-mentioned normal mode (A), while in this strong mode (B), that is, as drive control of the motor 80. , The rotation of the sterilization filter 76 is set to be continuous operation.

Further, the standby mode (C) is a mode set when the power is turned off, and in this device 10, even if the power is turned off, the internal control is not turned off, as shown in Table 1. , It is set so that the energization control is performed only once every 8 hours for 6 minutes. This is because if all control operations are stopped due to the power being turned off, bacteria and viruses trapped in the dust removal filter 32 may be activated and proliferate, and the sterilization filter 76 is sterilized from above. A control procedure for this standby mode is specified to prevent the water from drying out and impairing the sterilization properties of the sterilization filter 76 itself. When the normal mode (A) or the strong mode (B) is set from the standby mode (C), the set mode is activated. Further, in this standby mode (C), when the power of the device 10 is unplugged, the control operation naturally stops.

Here, the main feature of this embodiment is that, as a mode of energizing the electrode 62, when the normal mode (A) is set, the rest time is as shown in FIG. 20 (A). Is executed for energization control set longer than the energization time, specifically, 6-minute energization and 54-minute pause repeated control, and the energization direction is alternately reversed with an energization stop period in between. The reversal of the energization direction is set to be executed during the energization stop period. That is, first, if the polarity (energization direction) reverse switching control is not performed and the current is always in only one direction, scale adheres to the surface of the electrode 62 and the electrolysis efficiency is lowered. , Is a well-known control that has been performed for some time.

However, if the energization direction is reversed, the following problems will occur as it is. That is, when the direction of energization is reversed from positive energization to negative energization, the total value of the absolute values of the current values of +0.248 (A) and -0.248 (A) is 0.496 on the electrode 62. The overcharged charge (excessive charged charge) based on the surge current of (A) remains, and when re-energized, the catalyst layer 62b of the electrode 62 is an electrode based on the remaining overcharged charge. It is vulnerable to damage such as poor non-attachment that peels off from the main body 62a.

If the catalyst layer 62b is peeled off from the electrode body 62a, the surface area of the electrode 62 that contributes to the electrolysis operation is reduced by that amount, the electrolysis efficiency is lowered, and there is no reattachment. , The peeled state progresses as the electrolytic operation progresses. Therefore, when the energization direction is reversed, a stop period is once provided, in other words, by performing the energization direction switching control during this energization stop period, the electric charge charged on the electrode 62 is +0.248 (A). Alternatively, the value is based on the surge current of 0.248 (A), which is the absolute value of the current value of −0.248 (A). That is, the value is halved as compared with the case where the above-mentioned energization stop period is provided, and the damage to the electrode 62 is surely reduced. As described above, in the situation where the normal mode (A) is set, the effect of surely extending the life of the electrode 62 and maintaining the electrolytic operation for a long period of time is achieved.

Moreover, the electric charge charged on the electrode 62 is spontaneously discharged due to an exponential change with the passage of time, and is usually reduced to the extent that there is almost no effect after a lapse of several minutes. It is a thing. In view of this, in the normal mode (A) of this embodiment, the energization stop time is set to "54 minutes", which is significantly longer than the energization time, and the charge charged on the electrode 62 during energization is generated. It is sufficiently spontaneously discharged and substantially disappears to prevent damage to the electrode 62. In this way, in the situation where this normal mode (A) is set, the electrode 62 is set to maintain the required concentration of electrolytic hypochlorous acid while minimizing the damage received when the electrode 62 is energized. ing.

On the other hand, in the state where the strong mode (B) is set, the energization control in which the pause time is set shorter than the energization time in order to forcibly increase the production concentration of electrolytic hypochlorous acid, specifically, the energization control is set. , 9 minutes energization, 1 minute pause repeated control is executed, and the energization direction is alternately reversed with an energization stop period in between, as in the normal mode (A), and this reversal of the energization direction is energization. It is set to run during the downtime. That is, in the situation where this strong mode (B) is set, the control in which the production concentration of the electrolytic hypochlorous acid water is prioritized is executed. Here, the energization stop period in the strong mode (B) is set to "1 minute", and the charge charge of the electrode 62 when the energization is stopped for a long time as compared with the above-mentioned normal mode (A). Natural discharge is not expected. Even so, the amount of charge charged on the electrode 62 is compared with the conventional reverse energization control of the energization direction, as compared with the direct reverse energization from plus to minus or minus to plus in the energization direction during the energization stop period. Is halved, so that this alone leads to suppression of damage to the electrode 62 as compared with the conventional case. As described above, even in the situation where the strong mode (B) is set, the effect of extending the life of the electrode 62 and maintaining the electrolytic operation for a long period of time is achieved.

It is a control that closes the eyes that some damage is given to the electrode 62 by executing such energization control in the strong mode (B), but in this strong mode (B), the electrode In order to minimize the damage of 62, after 40 minutes have passed from the setting of this strong mode (B), the setting of the strong mode (B) is forcibly canceled and the setting is set to return to the normal mode (A). Has been done.

Here, the process of generating electrolytic hypochlorite water and hypochlorous acid (ions) from tap water mixed with salt by performing the above-mentioned energization control on the electrode 62 will be described below.
First, since tap water contains chlorine, the following electrochemical reaction occurs.
<Anode side>
4H ₂ O-4e- → 4H ++ O ₂ ↑ + 2H ₂ O
2Cl ⁻ → Cl ₂ + 2e ⁻
H ₂ O + Cl ₂ ← → HClO + H ⁺ + Cl ⁻
<Cathode side>
4H ₂ O + 4e ⁻ → 2H ₂ ↑ + 4OH ⁻
<Between electrodes>
_{^{H + + OH - → H 2}} O

_{By the above reaction, hypochlorous acid (HClO) and active oxygen (O 2} ↑), which have a bactericidal action, that is, a bactericidal action of bacteria and an inactivating action of viruses, and a deodorizing action, are produced. Electrolyzed hypochlorous acid water is produced as an aqueous solution. That is, hypochlorous acid is volatilized and released into the air, and at the same time, it dissolves in water to generate electrolyzed hypochlorous acid water.

The electrolyzed hypochlorite water in the hypochlorite water generation water tank 56 flows into the sterilization water tank 58 through the second communication portion 56a. The water tank 58 for sterilization was generated at a concentration (for example, 15 ppm in the normal mode (A) and 35 ppm in the strong mode (B)) at which the hypochlorite water generator 60 sufficiently exerts the sterilization function. Electrolyzed hypochlorous acid water will be stored as sterilized water.

On the other hand, the motor 80 constituting the sterilization mechanism 48 rotates the wheel 72 at a predetermined slow rotation speed. The rotation direction of the wheel 72 is counterclockwise in FIG. 10 when the wheel 72 is viewed from the front side, and clockwise in FIG. 11 when the wheel 72 is viewed from the rear side. As the wheel 72 rotates in this direction, the bucket 78 repeats the operation of pumping the sterilized water from the sterilization water tank 58 and applying it to the sterilization filter 76 from above.

Here, when the sirocco fan 32 rotates by energizing the motor 80, an air flow of intake port 18 → air purifier 24 → air sterilizer 26 → blower 28 → exhaust port 20 is generated in the air flow path 22. To do.

Specifically, when the air (outside air) sucked from the intake port 18 passes through the deodorizing filter 30 of the air purifying device 24, the odor is deodorized through activated carbon and coarse dust and house dust are removed. , Pollen in the air is adsorbed when passing through the subsequent pollen filter 33, and finally, when passing through the dust removal filter 32 made of a HEPA filter, fine dust, bacteria and viruses of PM2.5 are mostly captured. Will be cleaned.

Here, the bacteria and viruses trapped in the dust removal filter 32 will stay in the dust removal filter 32 in the state of being trapped here in the past, and will be accumulated in the dust removal filter 32 with time. In other words, the dust removal filter 32 can capture bacteria and viruses, but on the contrary, the problem of becoming a "hotbed" for bacteria and viruses has been strongly pointed out. However, as a feature of this example, as described above, hypochlorous acid water (hypochlorous acid water stored in the sterilization water tank 58 and hypochlorous acid contained in the sterilization filter 32) Hypochlorous acid volatilized from (acid water) is brought to the sterilization filter 32, and by being contained therein, bacteria and viruses trapped in the dust removal filter 32 are sterilized and inactivated by the hypochlorous acid. Literally, it is in a state of being sterilized and cleaned, and the fact that the dust removal filter 32 becomes a hotbed of bacteria and viruses can be effectively suppressed.

As described above, when the air (outside air) sucked from the intake port 18 passes through the deodorizing filter 30 of the air purifier 24, the bacteria and viruses contained in the air (outside air) are first activated carbon. Some of them may be adsorbed by the virus and trapped here, but even if a situation occurs in which they are trapped by activated carbon, they have the same effect as the action of hypochlorous acid in the dust removal filter 32 described above. Is also applied to the deodorizing filter 30, so that the possibility that the deodorizing filter 30 in which bacteria and viruses are trapped becomes a hotbed of bacteria and viruses is effectively suppressed.

Further, this hypochlorous acid is sterilized by the hypochlorous acid water as described above when the sterilization filter 76 is ventilated, and also contains the volatile hypochlorous acid in the sterilization filter 76. In this state, the air containing the volatilized hypochlorous acid is discharged into the room through the exhaust port 20 after passing through the disinfection filter 76 on the air flow, and then again from the intake port 18 to the space disinfection cleaning device 10. It will be taken in (taken in). In this way, the air containing hypochlorous acid taken into the air flow passage 22 from the intake port 18 passes through the dust removal filter 32 again. Then, the bacteria and viruses trapped in the dust removal filter 32 are sterilized by the hypochlorous acid contained in the air passing through the dust removal filter 32. As described above, in this embodiment, by repeating the above air flow, the bacteria and viruses trapped in the dust removal filter 32 are basically sterilized by hypochlorous acid, as in the past. The problem that the dust removal filter 32 becomes a hotbed of bacteria and viruses will be completely solved.

In the air purified by the air purifying device 24 in this way, most of the bacteria are sterilized by the dust removing filter 32 and the virus is inactivated, but even so, the air that has passed around (side) of the dust removing filter 32 still flows. Bacteria and viruses in the air that existed and passed through will remain, but the air that has passed through the dust removal filter 32 in this way then enters the air sterilization device 26 and passes through the sterilization filter 76. At that time, the sterilization filter 76 is hung from above via the sterilization mechanism 48 and comes into gas-liquid contact with the hypochlorite water held inside, and passes through the sterilization filter 76. Bacteria and viruses remaining in the air will be sterilized and inactivated almost completely by the hypochlorite water.

On the other hand, the air that comes into gas-liquid contact with hypochlorous acid water as sterilizing water and contains hypochlorous acid is exhausted from the exhaust port 20 to the outside of the device 10 by the blower device 28, and the device 10 It is released into the surrounding space, and the surrounding space is sterilized. Specifically, hypochlorous acid contained in the exhaust exhausted from the exhaust port 20 kills various bacteria (floating) existing in the space around the device 10 and inactivates the virus. At the same time, bacteria and viruses adhering to the surface of equipment and parts existing in the surrounding space are also sterilized and inactivated by hypochlorous acid contained in the exhaust exhausted from the exhaust port 20, that is, removed. It will be sterilized.

On the other hand, in the sterilized water (hypochlorous acid water) applied to the sterilization filter 76 from above, the surplus that could not be held by the sterilization filter 76 falls downward due to its own weight, and the sterilization water storage tank. It will be recovered in 58 and will be subjected to the above-mentioned sterilization operation again. Here, in the sterilized water recovered from the sterilization filter 76, the air passing through the sterilization filter 76 is cleaned by removing fine dust by the HEPA filter 32, and is sterilized. Naturally, it is a clean sterilized water that does not contain fine dust. As a result, the sterilized water that has fallen from the sterilization filter 76 and is collected in the sterilized water storage tank 58 is used to remove the sterilized water already stored in the sterilized water storage tank 58 with fine dust, bacteria, and viruses. Contamination with, etc. will be effectively prevented.

By collecting the sterilized water from the sterilization filter 76 in this way, the sterilized water in the sterilized water storage tank 58 is constantly replenished and only the minimum amount required for sterilization is consumed. As a result, it is possible to achieve the effect that the load at the time of generating the sterilized water in the sterilized water generator 60 is effectively suppressed.

Further, the sterilized water collected from the sterilization filter 76 is cleaned by removing even fine dust by the HEPA filter 32, and since it is sterilized, it is stored in the sterilization water storage tank 58. The sterilized water is not contaminated with fine dust, bacteria, viruses, etc., and is communicated to the sterilized water storage tank 58 via the second communication portion 56a. Contamination of the hypochlorous acid water stored in 56 with fine dust, bacteria, viruses, etc. is also effectively suppressed. As a result, as in the conventional case, the electrolyzed water contaminated with fine dust is mixed in, so that the electric resistance value is increased and the applied voltage required for electrolysis must be increased. It is possible to achieve the effect of improving the success rate of electrolyzed water.

The configuration and control procedure of the control device 64 described above will be described below.

First, before explaining the configuration of the control device 64, the configuration of the electrode 62 used in this embodiment will be described with reference to FIG. 18A. Each electrode 62 is composed of an electrode body 62a made of titanium or a titanium alloy, and a catalyst layer 62b having a noble metal component attached to the surface of the electrode body 62a. Here, in this embodiment, the noble metal component of the catalyst layer 62b contains a platinum component, and more specifically, it is composed of a platinum-iridium (Pt-Ir) alloy.

Further, in this embodiment, the catalyst layer 62b is attached to the surface of the electrode body 62a by mechanical bonding using an anchoring effect or the like. As described above, in this embodiment, since a bonding agent such as an adhesive is not used, the bonding agent does not dissolve in the electrolyzed water during the electrolysis operation, and the hypochlorous acid water as the electrolyzed water dissolves. It will be effectively prevented from being contaminated by the adhesive.

On the other hand, as shown in FIG. 19, the control device 64 includes an electrode drive circuit 86 for passing a current between the pair of electrodes 62. The electrode drive circuit 86 is output (IN1 and IN2) from the polarity switching circuit 88 as a switching element, and the polarity switching circuit 88 is output from the CPU 90 of the control unit 60. The outputs from the CPU 90 are a PWM (pulse-width modulation) output and a polarity switching output.

Then, in this embodiment, the control device 64 performs the timing at which the current direction is switched (that is, the polarity is switched) by the polarity switching circuit 88 during the period when the energization to the electrode 62 is stopped. The control mode is specified in. In this way, the surge current flowing through the electrode 62 is suppressed, the current with an excessive current density is prevented from flowing through the catalyst layer 62b of the electrode 62, and the electrode body 62a and the catalyst layer 62b are attached to each other (mechanically). It is configured so that the state of (joining) can be reliably maintained. As a result, the electrode 62 is damaged by switching the polarity of the current (specifically, in the electrode 62, the catalyst layer 62b is partially peeled off from the electrode body 62a due to excessive charge and charge, and the electrode body 62a The joint surface with the catalyst layer 62b is exposed to reduce the electrolytic efficiency), and the effect of extending the life of the electrode 62 can be achieved.

Specifically, in the normal mode (A), as shown in FIG. 20 (A), after the current of 0.248 (A) is passed for 6 minutes, the circuit is opened and the energization stop period is 54 minutes. During this energization stop period, the polarity switching output of the polarity switching circuit 88 is switched so that the current energizing direction is opposite to that of the past. Then, when the 54-minute energization stop period elapses, the power supply drive circuit 86 is activated to start energizing the electrode 62, and this energization is 0.248 (0.248), which is the same as the current value at the time of energization in the positive direction. In A), the current in the opposite direction is set to flow for 6 minutes.

In this way, the energization cycle is set to repeat the energization cycle in which the current of 0.248 (A) whose forward and reverse are reversed is passed for 6 minutes with a 54-minute energization stop period in between. The 54 minutes of the energization stop period is set to a time sufficient for the charge excessively charged on the surface of the electrode 62 based on the surge current to be spontaneously discharged to the extent that there is no problem due to the energization stop period. This time is appropriately selected according to the size of the electrode 62, the applied voltage, and the value of the energizing current, but the important selection condition is that the electric charge charged on the surface of the electrode 62 is natural during this energization stop period. It is enough time to be discharged.

Further, in the strong mode (B), as shown in FIG. 20 (B), after the current of 0.248 (A) is passed for 9 minutes, the circuit is opened and a 1-minute energization stop period is provided. During the energization stop period, the polarity switching output of the polarity switching circuit 88 is switched so that the energization direction of the current is opposite to that of the past. Then, when the one-minute energization stop period elapses, the power supply drive circuit 86 is started to energize the electrode 62, and this energization is 0.248 (0.248), which is the same as the current value at the time of energization in the positive direction. In A), the current in the opposite direction is set to flow for 9 minutes. As described above, in the state where the strong mode (B) is set, the electrolysis efficiency is maintained high because the energization is performed for 36 minutes within 40 minutes when the setting of the strong mode (B) is allowed. The Rukoto.

Here, the mechanism of energization control in the control device 64 will be described with reference to FIG. 19 again. It is the electrode drive circuit 86 that allows current to flow between the pair of electrodes 62. Outputs (IN1 and IN2) are output from the polarity switching circuit 88 to the electrode drive circuit 86, while output is output from the CPU 90 of the control unit 64 to the polarity switching circuit 88. The outputs from the CPU 90 are a PWM (pulse-width modulation) output and a polarity switching output.

On the other hand, a resistor 92 is connected between the electrode drive circuit 86 and the ground. The average current monitoring circuit 94 amplifies the voltage (pulse) due to the current (= current between the electrodes 62) flowing through the resistor 76, and inputs the averaged voltage to the CPU 90. Further, the peak current monitoring circuit 96 amplifies the voltage (pulse) due to the current flowing through the resistor 92 (= the current between the electrodes 62), holds the peak voltage of the pulse, and inputs it to the CPU 90.

In the configuration of the embodiment described above, since the suction force rather than the discharge force of the blower 28 acts on both the air purifier 24 and the air sterilizer 26, the air sterilizer 26 does not become a large resistance. The effect that the decrease in the amount of air blown is small is achieved. Further, since it is the sterilizing water that wets the sterilizing filter 76, the sterilizing filter 76 itself can be sterilized.

Further, in the configuration of this embodiment, the normalized air passing through the sterilization filter 76 is impregnated with sterilized water, and the indoor space can be sufficiently sterilized and deodorized by itself. Therefore, neither the conventional mist generator nor the mist blower is required, and the configuration of the entire device 10 can be simplified, downsized, and the cost can be reduced.

When the space sterilization cleaning device 10 is used for a long period of time, minerals in the water adhere to the places where the water comes into contact as scales. In the configuration of the embodiment, since the points where water comes into contact are gathered around the water receiving pan 42, if the water receiving pan 42 is pulled out, the parts requiring water-related maintenance can be easily taken out of the housing 12. be able to. This facilitates maintenance.

Although the embodiments of the present invention have been described above, the present invention is not limited to this, and it goes without saying that various modifications can be made without departing from the gist of the present invention. Further, it goes without saying that the numerical values used are merely examples, and the present invention is not limited to adopting the numerical values used in the description of the embodiments.

For example, in the above-described embodiment, the electrodes 62 provided in the hypochlorous acid generator 60 have been described as including a pair as shown in FIG. 18 (A), but the present invention is the present invention. For example, when it is desired to increase the hypochlorous acid concentration without being limited to such a configuration, as shown in FIG. 18B as a modified example, the pair of electrodes is formed into two or three sets. Needless to say, the hypochlorous acid generator 60 may be configured to include a plurality of sets. Specifically, in this modification, as shown in FIG. 18B, a configuration is adopted in which three electrodes 62A, 62B, 62C are provided and two sets of electrode pairs are provided. That is, the first and third electrodes 62A and 62C are respectively configured to include an electrode body 62a and a catalyst layer 62b attached to one side of the electrode body 62a, and the second electrode 62B is an electrode body. It is configured to include a 62a and catalyst layers 62b1 and 62b2 attached to both sides of the electrode body 62a, respectively. The first electrode pair is the left half of the one-point chain line in the figure of the first electrode 62A and the second electrode 62B, that is, the left half of the electrode body 62a of the second electrode 62B and the left side surface in the figure thereof. The second electrode pair is composed of the catalyst layer 62b1 attached to the second electrode 62B, and the second electrode pair is the right half of the one-point chain line in the figure of the third electrode 62C and the second electrode 62B, that is, the electrode body 62a of the second electrode 62B. It is composed of the right half of the above and the catalyst layer 62b2 attached to the right side surface in the drawing. As described above, in this modified example, since the electrodes 62 are composed of two pairs of electrodes 62A; 62B, 62C; 62B, the electrolysis efficiency is substantially doubled, which is compared with the case of the paired electrode configuration. Therefore, it becomes possible to produce a high concentration of hypochlorous acid.

The present invention contributes to sterilization and cleaning of a room, and is used not only in a general household room but also in a bedroom, a hospital room, an operating room, a treatment room, etc. of a medical facility, etc., for business use. Needless to say, it can be widely used for improving the environment of rooms (spaces) where personnel gather, such as offices.

10 Spatial disinfection cleaning device 12 Housing 14 Front cover 16 Operation panel 18 Intake port 20 Exhaust port 22 Air flow path 21 Louver 24 Air cleaning device 26 Air disinfection device 28 Blower 30 Deodorizing filter 32 Dust removal filter 33 Pollen filter 34 Sirocco fan 36 Motor 38 Fan casing 38a Discharge port 38b Intake port 38c Sub-discharge port 40 Water supply device 42 Water receiving pan 44 Cover 46 Recess 48 Disinfection mechanism 50 Water supply tank 52 Untreated water water storage tank 52a First communication part 54 Protrusion 56 Hypochlorite water generation water tank 56a Second communication part 58 Disinfection water tank 60 Hypochlorite water generation device 62 Electrode 62A Electrode body 62B Catalyst layer 64 Control device 66 Connector 68 Strut 70 Bearing 72 Wheel 72a Hub 72a1 Inner hub 72a2 Outer hub 72b Rim 72c Front spoke 72d Rear spoke 72e Support shaft 72f Input gear 72l Wheel base 72m Wheel cap 72h Inclined surface 72i Rib 72j Inclined surface 72k Rib 74 Sterilization part 76 Conical surface 78 Bucket 34A Engagement part 80 Motor 80a Output gear 82 Intermediate gear 84 Enclosure 84a Partial enclosure 84b Partial enclosure 86 Electrode drive circuit 88 Polarity switching circuit 90 CPU
92 Resistance 94 Average current monitoring circuit 96 Peak current monitoring circuit

Claims (10)

With the housing
An air passage that communicates the intake port and the exhaust port formed in this housing with each other,
It is provided with at least a pair of electrodes arranged in the housing and immersed in stored salt-containing water, and the salt-containing water is electrolyzed to dissolve hypochlorous acid and hypochlorous acid. Electrolytic means for producing hypochlorous acid water and
A sterilization filter arranged so as to allow ventilation in the air passage,
The sterilization filter is impregnated with the electrolytic hypochlorous acid water generated by the electrolytic means, and the sterilization means for containing the hypochlorous acid volatilized from the electrolytic hypochlorous acid water.
An air blowing means that is introduced from the intake port, passes through the sterilization filter, and generates an air flow exhausted from the exhaust port in the air passage.
It is provided with a control means for controlling the current flowing between the electrodes of the electrolytic means.
The air passing through the sterilization filter is sterilized by hypochlorous acid contained in the sterilization filter and electrolyzed hypochlorous acid water in contact with gas and liquid, and the air containing hypochlorous acid is exhausted. In a space sterilization cleaning device that exhausts air from the mouth to the outside of the housing and sterilizes the surrounding space of the housing with the hypochlorous acid.
The electrode includes an electrode body made of titanium or a titanium alloy, and a catalyst layer having a noble metal component adhering to the surface of the electrode body.
The control means energizes the electrodes so as to alternately reverse the current direction with an energization stop period in between, and reverses the energization direction of the electrodes during the energization stop period of the electrodes. A space sterilization cleaning device characterized by performing control. The space according to claim 1, wherein the control means executes control for setting the length of the period during which the energization of the electrodes is stopped to be longer than the energization time of the current flowing between the electrodes. Bactericidal cleaning device. The control means is characterized in that the length of the period during which the energization of the electrode is stopped is set to the time during which the electric charge charged in the electrode is spontaneously discharged based on the surge current flowing through the electrode. The space sterilization cleaning device according to claim 2. The control means executes control for setting the energization stop period to a time during which the electric charge charged on the electrode is spontaneously discharged based on the surge current flowing through the electrode in a state where the normal mode is set. The space sterilization cleaning device according to claim 3, which is characterized. The space sterilization according to claim 1, wherein the control means sets the length of the period during which the energization of the electrodes is stopped to be shorter than the energization time of the current flowing between the electrodes. Cleaning device. The control means executes control for setting the length of the period during which the energization of the electrodes is stopped to be shorter than the energization time of the current flowing between the electrodes in a state where the strong mode is set. The space sterilization cleaning device according to claim 5. The space sterilization cleaning device according to claim 1, wherein the control means executes a control in which the amount of energization whose energization direction is reversed is set to be the same as each other. The space sterilization cleaning device according to claim 1, wherein the catalyst layer is formed of a noble metal containing a platinum component. The space sterilization cleaning device according to claim 8, wherein the noble metal containing a platinum component is a platinum-iridium alloy. The space sterilization cleaning device according to claim 1, wherein a plurality of pairs of the electrodes are provided.

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