JP2020067245A - Air supply device - Google Patents

Abstract

To provide an air supply device capable of effectively preventing dust and microorganisms such as fungi and bacteria from entering an interior while supplying fresh external air to the interior.SOLUTION: An air supply device 1 is configured to: take in external air through an air intake 2a and remove dust therefrom in a manner that makes the air taken in through the air intake 2a pass through a dust removal filter 4; sterilize the air in a manner that makes the same pass through a filter member 5 impregnated with chlorine sterilization liquid; and blow out the air to an interior through an air outlet 2b. The chlorine sterilization liquid is mildly alkaline stabilized sodium hypochlorite solution which is composed mostly of sodium hypochlorite and pure water and has a pH value of 9.0 to 11.5 with almost no temporal change.SELECTED DRAWING: Figure 1

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air supply device for supplying fresh outdoor air indoors, and particularly to an air supply device for indoor ventilation used in a food factory, a commercial kitchen, or the like.

  In food factories and commercial kitchens, it is necessary to prevent the deterioration of the working environment by discharging cooking exhaust gas and combustion exhaust gas generated by cooking. For this reason, many food factories and commercial kitchens are equipped with forced ventilation equipment. Such forced ventilation equipment includes an exhaust device for discharging indoor (including indoor) air to the outside and an air supply device for supplying outdoor air (outside air) to the inside, and includes the cooking exhaust and the combustion exhaust. It is generally configured to discharge such as outdoors and to supply fresh air outdoors to prevent negative pressure inside the room. In addition, the air supply device usually includes a blower for sending the outside air indoors and a filter for collecting dust and the like contained in the outside air.

  Although not intended for the food factory or the commercial kitchen, Patent Document 1 describes an air supply device for indoor ventilation including a blower and a filter.

JP, 2015-98950, A

  By the way, in the food factory, the commercial kitchen, etc., it is desired to prevent not only dust but also microorganisms such as mold and bacteria from entering the room. In this case, it is conceivable to use an ultra-high performance filter such as HEPA or ULPA as the filter provided in the air supply device.

  However, in the ultra-high performance filter, molds and bacteria may grow in the filter, and the grown molds and bacteria may appear on the surface of the filter, and as a result, molds and bacteria may enter indoors.

  Therefore, the present invention provides an air supply device capable of effectively suppressing the invasion of dust into the room and the invasion of microorganisms such as mold and bacteria into the room while supplying fresh air outdoors. The purpose is to do.

  According to one aspect of the present invention, an air supply device is provided. The air supply device sucks outdoor air from the suction port, removes the air sucked from the suction port by passing through a dust filter, and then passes through a filter member impregnated with a chlorine-based disinfecting solution. By doing so, the bacteria are sterilized and blown out indoors from the outlet. The chlorine-based sterilization liquid contains sodium hypochlorite and pure water as main components, has a pH value of 9.0 to 11.5, and is a weak alkaline stable type with almost no change in pH value over time. It is a sodium hypochlorite solution.

  In the air supply device, dust in the air (outside air) sucked through the suction port is removed by passing through the dust filter. Further, the air that has passed through the dust removal filter comes into contact with the chlorine-based disinfecting liquid when passing through the filter member impregnated with the chlorine-based disinfecting liquid. The weakly alkaline stable sodium hypochlorite solution used as the chlorine-based sterilizing solution rapidly inactivates microorganisms such as mold and bacteria when they come into contact with the microorganisms. Therefore, the air that has passed through the dust removal filter is effectively sterilized by passing through the filter member impregnated with the chlorine-based sterilization solution, and further, microorganisms such as mold and bacteria remain on the filter member. It does not grow or multiply. Then, the air that has been sterilized by passing through the filter member impregnated with the chlorine-based sterilization liquid is blown out indoors from the air outlet. Therefore, according to the air supply device, while supplying fresh air outdoors, it is possible to effectively suppress the invasion of dust into the room and the invasion of microorganisms such as mold spores and bacteria into the room. You can It is confirmed that the weakly alkaline stable sodium hypochlorite solution has no irritating odor and is safe for the human body.

It is a side sectional view showing the schematic structure of the air supply device concerning a 1st embodiment. It is a side sectional view showing a schematic structure of an air supply device concerning a 2nd embodiment. It is a figure which shows the filter member in the air supply apparatus which concerns on the said 2nd Embodiment, a drive roller, and a driven roller. It is a side sectional view showing a schematic structure of an air supply device concerning a 3rd embodiment. It is a side sectional view showing a schematic structure of an air supply device concerning a 4th embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a side sectional view showing a schematic configuration of the air supply device 1 according to the first embodiment. The air supply device 1 according to the present embodiment is a device that supplies outdoor air (fresh air) to indoors (including indoors. The same applies hereinafter), and is an exhausting device that discharges indoor air to the outside (illustration is shown). (Omitted) is used together with to configure forced ventilation equipment such as food factories and commercial kitchens. That is, the air supply device 1 according to the present embodiment is an air supply device for indoor ventilation. As shown in FIG. 1, the air supply device 1 includes a housing 2, a blower 3, a dust filter 4, a filter member 5, and an impregnation device 6.

  The housing 2 is formed in a rectangular tube shape, and is attached to a wall portion (mainly an outer wall) W that partitions indoors and outdoors. The housing 2 penetrates the wall portion W, and an opening on one end side (the left end side in FIG. 1) of the housing 2 located outdoors constitutes a suction port 2a for sucking the outdoor air. The opening on the other end side (the right end side in FIG. 1) of the housing 2 located at the position 2 forms a blowout port 2b for blowing air indoors.

  An outdoor hood 7 that mainly prevents rain from blowing in is attached to the one end of the housing 2 (end on the suction port 2a side), and the end of the outdoor hood 7 on the side opposite to the housing 2 (open end). An insect repellent net 8 for mainly preventing insects from entering is detachably attached to the. Further, a louver 9 is detachably attached to the other end of the housing 2 (an end portion on the blowout port 2b side).

  The blower 3 is arranged in the middle of the housing 2 in the longitudinal direction of the housing 2. The blower 3 includes a fan 31 and an electric motor 32 that rotationally drives the fan 31, and the fan 31 is rotated by the operation of the electric motor 32, thereby generating an air flow from the suction port 2a toward the air outlet 2b. The operation of the electric motor 32, that is, the operation of the blower 3 is controlled by the control unit (not shown) of the air supply device 1.

  The dust removal filter 4 is arranged between the suction port 2a and the blower 3 in the housing 2 (that is, on the upstream side of the air flow of the blower 3) so as to block the air flow. In the present embodiment, the dust removal filter 4 includes a coarse dust filter 41 that collects coarse dust in the air, and a fine dust filter that is disposed downstream of the coarse dust filter 41 and that collects fine dust in the air. 42 and. The coarse dust filter 41 may be, for example, a so-called pre-filter that collects dust having a particle size of more than 10 μm, and the fine dust filter 42 may be a so-called high-performance filter that collects dust having a particle size of 0.3 to 10 μm. Or it may be a medium performance filter.

  The dust removing filter 4 (coarse dust filter 41 and fine dust filter 42) is configured to be attachable to and detachable from the housing 2. In the present embodiment, the dust removal filter 4 is held by a frame body (not shown) to form a dust removal unit. Then, the dust removing unit 4 is inserted into the casing 2 through an insertion port (shown by a one-dot chain line in FIG. 1) 2c formed in a portion of the side face of the casing 2 located outdoors, so that the dust removing filter 4 can be inserted into the casing. The dust removal filter 4 is mounted in the body 2 and is configured to be removed from the housing 2 by pulling out the dust removal unit from the insertion port 2c.

  The filter member 5 is a porous material having air permeability and water absorption, and is formed to have a flat plate-like appearance. The filter member 5 may be a non-woven fabric having a predetermined thickness. The filter member 5 is arranged in the housing 2 between the blower 3 and the outlet 2b (that is, on the downstream side of the air flow of the blower 3) so as to block the air flow. In addition, the material of the filter member 5 is a material which is not altered by a chlorine-based disinfecting liquid (a weakly alkaline stable sodium hypochlorite solution) described later, and examples thereof include polyester, polypropylene and polyethylene.

  Like the dust filter 4, the filter member 5 is configured to be attachable to and detachable from the housing 2. In the present embodiment, the filter member 5 is inserted into the housing 2 from the outlet 2b with the louver 9 removed, and is formed into a pair of filter mounting portions formed to face both inner side surfaces of the housing 2 ( It is attached to the housing 2 by being attached to the housing 2 and is detached from the housing 2 by being removed from the pair of filter mounting portions and taken out from the outlet 2b to the outside of the housing 2. There is.

  The impregnation device 6 is a device for impregnating the filter member 5 with a chlorine-based disinfecting liquid. In the present embodiment, the impregnation device 6 is configured to impregnate the filter member 5 with the chlorine-based sterilizing liquid by dropping and supplying the chlorine-based sterilizing liquid.

  The impregnation device 6 includes a sterilization liquid tank 61 that stores the chlorine-based sterilization liquid, a dropping supply unit 62 that supplies the chlorine-based sterilization liquid by dropping to the filter member 5, a sterilization liquid tank 61, and a dripping unit. A pipe 63 connecting the supply unit 62, an electric pump 64 provided in the middle of the pipe 63 for supplying the chlorine-based disinfectant solution in the disinfectant solution tank 61 to the drip supply unit 62, and the drip supply unit 62. A liquid receiving portion 65 for receiving an excess of the chlorine-based disinfecting liquid not impregnated in the filter member 5 among the chlorine-based disinfecting liquid supplied dropwise.

  The sterilization liquid tank 61 is made of a light-shielding material, and is arranged at a predetermined position indoors. In the present embodiment, the disinfectant solution tank 61 is configured so that the chlorine-based disinfectant solution can be replenished. Of course, the disinfectant solution tank 61 may be configured to be replaced with a new disinfectant solution tank 61 when the stored chlorine-based disinfectant solution is used up.

  The drip supply unit 62 is arranged above the filter member 5 in the housing 2. In the present embodiment, the dripping supply unit 62 has a temporary storage unit that can temporarily store the chlorine-based sterilization liquid supplied from the sterilization liquid tank 61 by the electric pump 64, and the bottom of the temporary storage unit. The chlorine-based disinfecting liquid is dropped and supplied to a plurality of locations on the upper surface of the filter member 5 through a plurality of holes or nozzles (not shown) provided in the.

  The electric pump 64 is configured to supply a predetermined predetermined amount of the chlorine-based disinfecting liquid to the drip supply unit 62. The operation of the electric pump 64 is controlled by the control unit of the air supply device 1.

  The liquid receiving portion 65 is arranged below the filter member 5 in the housing 2. The surplus chlorine-based sterilization liquid stored in the liquid receiving portion 65 may be re-supplied to the filter member 5 by utilizing a capillary phenomenon, or may be discharged to the outside through a drain pipe (not shown). Good.

  Here, the chlorine-based disinfecting liquid with which the filter member 5 is impregnated will be specifically described. In this embodiment, a weakly alkaline stable sodium hypochlorite solution is used as the chlorine-based disinfecting solution.

  The "weakly alkaline stable sodium hypochlorite solution" contains sodium hypochlorite and pure water (RO-ion-exchanged water) as main components, has a pH value of 9.0 to 11.5, and , Refers to a liquid whose pH value hardly changes with time. Further, "the pH value hardly changes with time" can also be referred to as "the pH value does not substantially change with time". For example, a hypochlorous acid water (acidic) or a sodium hypochlorite diluted solution (alkaline It means that the change in pH value with time is extremely small as compared with the conventional chlorine-based disinfecting liquids such as.

  Although not particularly limited, the residual chlorine concentration of the weakly alkaline stable sodium hypochlorite solution in the filter member 5 is preferably 50 to 200 ppm.

  It has been confirmed that the weakly alkaline stable sodium hypochlorite solution maintains its effective chlorine concentration for a long period (two years or more) under normal storage conditions (shading and room temperature environment). Further, the weakly alkaline stable sodium hypochlorite solution has an excellent sterilization function even when the effective chlorine concentration is about 10 ppm, and the sterilization rate is hypochlorous acid water (that is, hypochlorous acid). It has been confirmed that it is almost equivalent to chloric acid (HOCL). For example, the weakly alkaline stable sodium hypochlorite solution promptly inactivates (disinfects) a microorganism such as a mold or a bacterium when it comes into contact with the microorganism. Further, it has been confirmed that the weakly alkaline stable sodium hypochlorite solution has almost no irritating odor and is safe even if it enters the mouth, eyes, nose, or directly touches the skin. Therefore, the weakly alkaline stable sodium hypochlorite solution can be suitably used as a sterilizing solution for sterilizing the air supplied indoors, especially in food factories and commercial kitchens.

  Since the weakly alkaline stable sodium hypochlorite solution has the same features as the hypochlorous acid water (acidic), "stable alkaline hypochlorous acid (hypochlorous acid water)" Sometimes referred to as ".

Next, the operation of the air supply device 1 will be described.
The control unit of the air supply device 1 operates the blower 3 (the electric motor 32 thereof) and the electric pump 64 of the impregnation device 6 in conjunction with the operation of the exhaust device. When the blower 3 operates, an airflow is generated in the housing 2 from the suction port 2a toward the air outlet 2b, and accordingly, outdoor air is sucked into the housing 2 from the suction port 2a. Further, the dripping supply of the chlorine-based sterilization liquid to the filter member 5 by the impregnation device 6 is started.

  The air sucked from the suction port 2a first passes through the dust filter 4 to be dust-removed. That is, the air sucked from the suction port 2a passes through the coarse dust filter 41 and the fine dust filter 42 in this order, whereby the dust in the air sucked from the suction port 2a is removed.

  Next, the air that has passed through the dust removal filter 4 is sterilized by passing through the filter member 5 impregnated with the chlorine-based sterilization liquid. In the present embodiment, as described above, the weak alkaline stable sodium hypochlorite solution is used as the chlorine-based sterilization liquid. When passing through the filter member 5, the air that has passed through the dust removal filter 4 comes into contact with the weakly alkaline stable sodium hypochlorite solution impregnated therein. As a result, microorganisms such as mold and bacteria in the air that have passed through the dust removal filter 4 are inactivated. That is, the air that has passed through the dust filter 4 is sterilized.

  Then, the air that has passed through the filter member 5 impregnated with the chlorine-based sterilizing solution, that is, the air after dust removal and sterilization is blown out indoors from the air outlet 2b.

  As described above, the air supply device 1 according to the present embodiment removes dust by sucking the outdoor air from the suction port 2a by the operation of the blower 3 and passing the air sucked from the suction port 2a through the dust removal filter 4. Then, the chlorine-based sterilizing solution (the weakly alkaline stable sodium hypochlorite solution) is passed through the filter member 5 to sterilize and blow out indoors from the outlet 2b. There is. The filter member 5 is impregnated with the chlorine-based sterilization solution (the weakly alkaline stable sodium hypochlorite solution), and thus microorganisms such as mold and bacteria remain in the filter member 5 Also, microorganisms such as and bacteria do not grow.

  Therefore, according to the air supply device 1 according to the present embodiment, it is possible to supply fresh air outdoors and to prevent dust from entering the room and microorganisms such as mold and bacteria from entering the room. It can be effectively prevented.

  In addition, in the air supply device 1 according to the present embodiment, a part of the chlorine-based sterilization liquid (the weakly alkaline stable sodium hypochlorite solution) impregnated in the filter member 5 passes through the filter member 5. It is supplied indoors by being included in the generated air. Therefore, the air supply device 1 according to the present embodiment can also contribute to sterilization of the indoor space.

  Since the chlorine-based disinfectant solution is dropped and supplied to the filter member 5 by the impregnation device 6, the filter member 5 supplies the chlorine-based disinfectant solution while the air supply device 1 supplies outdoor air indoors. It is kept impregnated.

  Here, although not shown, a residual amount detection sensor that detects the residual amount of the chlorine-based disinfecting liquid in the temporary storage unit may be provided in the temporary storage unit of the drip supply unit 62. In this case, the control unit of the air supply device 1 may be configured to operate the electric pump 64 when the remaining amount becomes equal to or lower than the lower limit threshold and stop the electric pump 64 when the remaining amount becomes equal to or higher than the upper limit threshold.

[Second Embodiment]
FIG. 2 is a side sectional view showing a schematic configuration of the air supply device 10 according to the second embodiment. Elements common to those of the air supply device 1 (FIG. 1) according to the first embodiment are designated by the same reference numerals, and description thereof will be omitted.

  The main difference between the air supply device 1 according to the first embodiment and the air supply device 10 according to the second embodiment is that in the air supply device 1 according to the first embodiment, the filter member 5 has a flat plate-like appearance. While being formed and fixedly arranged in the housing 2, in the air supply device 10 according to the second embodiment, the filter member 50 is formed in the shape of a wide endless belt and is formed in the housing 2. It is configured to rotate.

  In the air supply device 10 according to the second embodiment, the filter member 50 has air permeability and water absorption as well as the filter member 5 in the air supply device 1 according to the first embodiment, and the chlorine-based sterilization liquid (the above-mentioned It is formed of a material that does not deteriorate by a weakly alkaline stable sodium hypochlorite solution). The filter member 50 may be a wide endless belt made of non-woven fabric. Further, the filter member 50 is stretched around a pair of rollers (a driving roller 51 and a driven roller 52) provided in the housing 2 so as to be vertically separated from each other. That is, the filter member 50 is bridged over the drive roller 51 and the driven roller 52 in a state where a predetermined tension is applied.

  Specifically, as shown in FIG. 3, the drive roller 51 has a cylindrical roller portion 51a and roller shaft portions 51b and 51b extending from both ends of the roller portion 51a. The drive roller 51 is rotatably assembled to a pair of first roller mounting portions (not shown) formed so that the roller shaft portions 51b, 51b at both ends thereof are formed to face the upper portions of both inner side surfaces of the housing 2. Has become.

  Similarly, the driven roller 52 has a cylindrical roller portion 52a and roller shaft portions 52b and 52b extending from both ends of the roller portion 52a. The driven roller 52 is rotatably assembled to a pair of second roller mounting portions (not shown) formed so that the roller shaft portions 52b, 52b at both ends thereof are formed so as to face the lower portions of both inner side surfaces of the housing 2. Has become.

  In the present embodiment, the driving roller 51 and the driven roller 52 are inserted in the filter member 50 in advance, and the roller shaft portions 51b and 51b of the driving roller 51 are assembled to the pair of first roller mounting portions. The roller shaft portions 52b, 52b of the driven roller 52 are assembled to the pair of second roller mounting portions. As a result, the filter member 50, the driving roller 51, and the driven roller 52 are mounted in the housing 2, and the filter member 50 is stretched over the roller portion 51a of the driving roller 51 and the roller portion 52a of the driven roller 52. Become.

  Further, by removing the roller shaft portions 51b and 51b of the driving roller 51 from the pair of first roller mounting portions and the roller shaft portions 52b and 52b of the driven roller 52 from the pair of second roller mounting portions, The member 50, the drive roller 51, and the driven roller 52 can be removed from the housing 2.

  In the present embodiment, the filter member 50, the drive roller 51, and the driven roller 52 as described above can be attached and detached via the air outlet 2b with the louver 9 removed. Preferably, the filter member 50, the drive roller 51, and the driven roller 52 are held in one frame to form a sterilization unit, and a unit mounting portion for mounting the sterilization unit is provided in the housing 2. . Then, the sterilization unit is configured to be attached to and detached from the unit mounting portion.

  The drive roller 51 in which the roller shaft portions 51b, 51b are assembled to the pair of first roller mounting portions is connected to an electric motor (not shown) provided in the housing 2 via a gear or the like (not shown), It rotates by being driven by an electric motor. The operation of the electric motor is controlled by the control unit (not shown) of the air supply device 10 in the same manner as the operation of the electric motor 32 of the blower 3 and the operation of the electric pump 64 of the impregnation device 6.

  As described above, the filter member 50 is stretched over the roller portion 51a of the driving roller 51 and the roller portion 52a of the driven roller 52 (is stretched over in a state in which a predetermined tension is applied). Further, in the present embodiment, the outer peripheral surface of the roller portion 51a of the drive roller 51 and the outer peripheral surface of the roller portion 52a of the driven roller 52 are subjected to anti-slip processing for preventing the filter member 50 from slipping. Therefore, when the drive roller 51 rotates, the filter member 50 rotates in the same direction as the drive roller 51 without slipping on the roller portion 51a of the drive roller 51 and the roller portion 52a of the driven roller 52.

  Then, the control unit (not shown) of the air supply device 10 according to the second embodiment, the electric motor that rotationally drives the blower 3 (the electric motor 32 of the blower 3) and the drive roller 51 in conjunction with the operation of the exhaust device, The electric pump 64 of the impregnation device 6 is operated.

  Thereby, also in the air supply device 10 according to the second embodiment, the outdoor air sucked from the suction port 2a is removed by passing through the dust removal filter 4, and then the chlorine-based disinfecting liquid (the weak alkaline solution is used). The stable type sodium hypochlorite solution) is passed through the filter member 50 to be sterilized and blown out indoors through the air outlet 2b. In addition, the microorganisms such as mold and bacteria do not remain or grow in the filter member 50. Therefore, the air supply device 10 according to the second embodiment can also achieve the same effect as the air supply device 1 according to the first embodiment.

  In particular, in the air supply device 10 according to the second embodiment, since the filter member 50 rotates, the portion of the filter member 50 (supplied portion) to which the chlorine-based sterilization liquid is supplied from the dropping supply portion 62 is a portion. Change. Therefore, the chlorine-based disinfecting liquid is impregnated into the entire filter member 50 in a well-balanced manner. In addition, in the air supply device 10 according to the second embodiment, the air that has passed through the dust removal filter 4 passes between the blower 3 side portion and the blower outlet 2b side portion of the filter member 50 impregnated with the chlorine-based disinfecting liquid. pass. That is, the air that has passed through the dust removal filter 4 will pass twice through the filter member 50 impregnated with the chlorine-based disinfecting liquid. Therefore, it is possible to more stably and effectively disinfect the air that has passed through the dust removal filter 4.

[Third Embodiment]
FIG. 4 is a side sectional view showing a schematic configuration of the air supply device 100 according to the third embodiment. Elements common to those of the air supply devices 1 and 10 (FIGS. 1 and 2) according to the first and second embodiments are designated by the same reference numerals, and description thereof will be omitted.

  The main difference between the air supply device 10 according to the second embodiment and the air supply device 100 according to the third embodiment is that the impregnation device 6 in the air supply device 10 according to the second embodiment has While the filter member 50 is configured to be impregnated with the chlorine-based disinfecting liquid by dropping and supplying the chlorine-based disinfecting liquid, the impregnation device 70 in the air supply device 100 according to the third embodiment is The filter member 50 is configured to be impregnated with the chlorine-based disinfecting liquid by immersing (immersing) a part of the filter member 50 in the chlorine-based disinfecting liquid.

  In the air supply device 100 according to the third embodiment, the impregnation device 70 includes a sterilization liquid tank 61 that stores the chlorine-based sterilization liquid and a predetermined amount of the chlorine-based sterilization liquid into which the lower portion of the filter member 50 is immersed. A sterilization liquid container 72 that stores the liquid, a pipe 73 that connects the sterilization liquid tank 61 and the sterilization liquid container 72, and the chlorine-based sterilization inside the sterilization liquid tank 61 that is provided in the middle of the pipe 63. An electric pump 74 for supplying the liquid to the disinfecting liquid container 72.

  The sterilization liquid container 72 is formed as a container having an open upper portion, and is arranged in the lower portion of the housing 2 so as to accommodate the lower portion of the filter member 50. By rotating the filter member 50, different parts of the filter member 50 are located in the disinfectant solution container 72 and immersed in the chlorine-based disinfectant solution in the disinfectant solution container 72. Therefore, as in the air supply device 10 according to the second embodiment, the chlorine-based disinfecting liquid is impregnated into the entire filter member 50 in a well-balanced manner. Further, the air that has passed through the dust removal filter 4 will pass twice through the filter member 50 impregnated with the chlorine-based disinfecting liquid.

  The electric pump 74 is configured to supply a predetermined amount of the chlorine-based disinfecting liquid to the disinfecting liquid container 72.

  Then, the control unit (not shown) of the air supply device 100 according to the third embodiment interlocks with the operation of the exhaust device, the (electric motor 32 of) the blower 3, the electric motor that rotationally drives the drive roller 51, and The electric pump 74 of the impregnation device 70 is operated.

  Although not shown, the sterilization liquid container 72 may be provided with a remaining amount detection sensor that detects the remaining amount of the chlorine-based sterilization liquid in the sterilization liquid container 72. In this case, the control unit may be configured to operate the electric pump 74 when the remaining amount becomes equal to or lower than the lower limit threshold value and stop the electric pump 74 when the remaining amount becomes equal to or higher than the upper limit threshold value.

  The air supply device 100 according to the third embodiment also provides the same effects as the air supply device 10 according to the second embodiment.

[Fourth Embodiment]
FIG. 5 is a side sectional view showing a schematic configuration of the air supply device 110 according to the fourth embodiment. Elements common to those of the air supply device 1 (FIG. 1) according to the first embodiment are designated by the same reference numerals, and description thereof will be omitted.

  The main difference between the air supply device 1 according to the first embodiment and the air supply device 110 according to the fourth embodiment is that the impregnation device 6 in the air supply device 1 according to the first embodiment has While the filter member 5 is configured to be impregnated with the chlorine-based disinfecting liquid by dropping and supplying the chlorine-based disinfecting liquid, the impregnation device 80 in the air supply device 110 according to the fourth embodiment is It is configured such that the filter member 5 is impregnated with the chlorine-based disinfecting liquid by spraying the chlorine-based disinfecting liquid toward the filter member 5.

  In the air supply device 110 according to the fourth embodiment, the impregnation device 80 includes a sterilization liquid tank 61 that stores the chlorine-based sterilization liquid, a plurality of spray nozzles 82, a sterilization liquid tank 61, and a plurality of spray nozzles. A pipe 83 connecting the pipe 82 and an electric pump 84 which is provided in the middle of the pipe 83 and pressure-feeds the chlorine-based sterilization liquid in the sterilization liquid tank 61 to the spray nozzles 82.

  The plurality of spray nozzles 82 are provided at intervals in the width direction of the housing 2. The plurality of spray nozzles 82 are arranged in the upper portion of the housing 2 so that the tips of the spray nozzles 82 face the surface of the filter member 5 on the blower 3 side. When the chlorine-based sterilization liquid in the sterilization liquid tank 61 is pressure-fed to the plurality of spray nozzles 82 by the electric pump 84, the plurality of spray nozzles 82 spray the chlorine-based sterilization liquid toward the filter member 5. . The sprayed chlorine-based disinfecting liquid is supplied directly and / or on the air flow to the filter member 5, whereby the filter member 5 is impregnated with the pre-chlorine disinfecting liquid. A part of the sprayed chlorine-based disinfecting liquid may be supplied indoors by passing above or below the filter member 5 in the housing 2 without being supplied to the filter member 5.

  Then, the control unit (not shown) of the air supply device 110 according to the fourth embodiment operates (the electric motor 32 of) the blower 3 and the electric pump 84 of the impregnation device 80 in conjunction with the operation of the exhaust device. Here, the control unit of the air supply device 110 according to the fourth embodiment may intermittently operate the electric pump 84 of the impregnation device 80.

  Also in the air supply device 110 according to the fourth embodiment, the same effect as that of the air supply device 1 according to the first embodiment can be obtained.

  In addition, in the air supply device 110 according to the fourth embodiment, instead of the flat plate-shaped filter member 5, an endless belt-shaped filter member used in the air supply devices 10 and 100 according to the second and third embodiments. Fifty may be used.

  Further, in the air supply device 110 according to the fourth embodiment, a one-fluid nozzle is used as the spray nozzle 82. However, the present invention is not limited to this, and a two-fluid nozzle may be used as the spray nozzle 82. When a two-fluid nozzle is used as the spray nozzle 82, the chlorine-based disinfectant solution in the disinfectant solution tank 61 is supplied to the spray nozzle 82 by the electric pump 84, and compressed air is supplied by a compressor (not shown) or the like. Is supplied.

  Furthermore, the plurality of spray nozzles 28 may be arranged so as to spray the chlorine-based disinfecting liquid toward the filter member 5, and the plurality of spray nozzles 28 are arranged as shown in FIG. That is, it is not limited to between the blower 3 and the filter member 5 in the direction of the air flow and in the upper part of the housing 2). For example, a part of the plurality of spray nozzles 28 may be arranged in the lower portion in the housing 2, or all or a part of the plurality of spray nozzles 28 of the filter member 5 and the louver 9 in the air flow direction. It may be arranged in between.

  Furthermore, although not shown, in the air supply device 110 according to the fourth embodiment, the impregnation device 80 may include an ultrasonic atomizer instead of the plurality of atomization nozzles 82. In this case, the ultrasonic atomizer has a storage unit that stores the chlorine-based disinfectant solution supplied by the electric pump 84, and the chlorine-based disinfectant solution stored in the storage unit is transferred by an ultrasonic transducer. It may be configured to be atomized and to discharge the atomized chlorine-based disinfecting liquid at a plurality of positions in the width direction of the housing 2. Preferably, the ultrasonic atomizer may be disposed in a lower portion of the housing 2 so as to spray the chlorine-based disinfecting liquid into a space between the blower 3 and the filter member 5 (or the filter member 50).

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and further modifications and changes can be made based on the technical idea of the present invention.

  1, 10, 100, 110 ... Air supply device, 2 ... Housing, 2a ... Suction port, 2b ... Air outlet, 3 ... Blower, 4 ... Dust filter, 5, 50 ... Filter member, 6 ... Impregnation device, 41 ... Coarse dust filter, 42 ... Fine dust filter, 51 ... Driving roller, 52 ... Followed roller, 61 ... Sterilization liquid tank, 62 ... Drip supply section, 63 ... Piping, 64 ... Electric pump, 70 ... Impregnation device, 72 ... Removal Bacteria solution container, 73 ... Piping, 74 ... Electric pump, 80 ... Impregnation device, 82 ... Spray nozzle (spray part), 83 ... Piping, 84 ... Electric pump

Claims (9)

The outdoor air is sucked in through the suction port, the air sucked in through the suction port is removed by passing through a dust removal filter, and then sterilized by passing through a filter member impregnated with a chlorine-based sterilizing solution. It is configured to blow out indoors from the outlet,
The chlorine-based sterilization liquid contains sodium hypochlorite and pure water as main components, has a pH value of 9.0 to 11.5, and is a weak alkaline stable type with almost no change in pH value over time. An air supply device that is a sodium hypochlorite solution.   The air supply device according to claim 1, wherein the dust filter includes a coarse dust filter that collects coarse dust, and a fine dust fine dust filter that is provided on a downstream side of the coarse dust filter. A casing having the suction port for sucking in outdoor air and the air outlet for blowing out air indoors;
A blower disposed in the housing to generate an air flow from the suction port toward the blowout port,
The dust removal filter disposed on the upstream side of the blower in the housing,
The filter member disposed on the downstream side of the blower in the housing,
An impregnation device for impregnating the filter member with the chlorine-based disinfecting liquid,
including,
The air supply device according to claim 1 or 2.   The air supply device according to claim 3, wherein the dust filter and the filter member are configured to be attachable to and detachable from the housing.   The air supply device according to claim 3 or 4, wherein the filter member is formed in a flat plate shape and is fixedly arranged in the housing.   The filter member is formed in the shape of a wide endless belt, and is stretched around a pair of rollers vertically spaced in the housing, and at least one of the pair of rollers rotates to rotate the roller. The air supply device according to claim 3 or 4, which is configured to rotate in the same direction as. The impregnating device is
A sterilization liquid tank for storing the chlorine-based sterilization liquid,
A disinfectant solution container for storing a predetermined amount of the chlorine-based disinfectant solution, which is disposed in the housing, has an upper opening and is immersed in a lower part of the filter member,
A pump for supplying the chlorine-based disinfectant solution in the disinfectant solution tank to the disinfectant solution container,
The air supply device according to claim 6, comprising: The impregnating device is
A sterilization liquid tank for storing the chlorine-based sterilization liquid,
A dripping supply unit that is disposed in the housing and that drips and supplies the chlorine-based sterilization liquid to a plurality of locations above the filter member,
A pump that supplies the chlorine-based disinfectant solution in the disinfectant solution tank to the dropping supply unit,
The air supply device according to claim 3, further comprising: The impregnating device is
A sterilization liquid tank for storing the chlorine-based sterilization liquid,
A spraying unit disposed in the housing, for spraying the chlorine-based disinfecting liquid toward a space between the blower and the filter member or toward the filter member,
A pump for supplying the chlorine-based disinfectant solution in the disinfectant solution tank to the spray unit,
The air supply device according to claim 3, further comprising: