JP2020110557A - Air cleaner - Google Patents

Abstract

To provide an air cleaner that can enhance a sterilization effect.SOLUTION: An effect of sterilizing air can be obtained with a constitution having: a dust collection filter 5 for removing fine particles; a blower 9 for blowing air; a wind path communicating the dust collection filter 5 and the blower 9; a cleaning air path 13 that branches from the wind path and circulates from the blower 9 to the dust collection filter 5; and a sterilization part 8 where hypochlorite is vaporized to the cleaning wind path 13, in which a vaporized hypochlorite gas is supplied to the dust collection filter 5 to sterilize.SELECTED DRAWING: Figure 1

Description

The present invention relates to an air purification device that removes bacteria, viruses, odors, etc. in the air.

An ion generator, which is said to generate sterilizing substances such as negative ions and ozone, is installed on the air passage, and clean air is circulated in the main body during the cleaning operation and returned to the upstream side of the filter, and the generated sterilizing substances filter the filter. Air blowers and air purifiers that remove bacteria and odorous components adhering to the inner surface of the main body case are known (for example, Patent Document 1).

JP-A-2005-46800

Although such a conventional air purifier can obtain the effect of suppressing bacteria on the dust collecting filter, it does not sufficiently deal with dust, bacteria, and viruses trapped on the dust collecting filter, and There was a problem that there was a risk of secondary pollution due to re-dispersion. Dust that has accumulated on the surface of the dust collection filter falls and re-scatters when it is vibrated or stopped, so even if it is sterilized with a sterilizing substance, it falls from the filter and falls to the floor surface, polluting the room. There was a problem that it would end up.

Therefore, in order to solve such problems, the dust and bacteria collected on the filter are sterilized by causing a sterilizing active substance to act, and a hypochlorous acid aqueous solution having a sterilizing action is stored immediately below the suction surface of the filter. However, an opening is provided so that dust, bacteria, and the like that fall from the filter due to vibration or the like can be trapped in the aqueous solution. With this, it is an object to provide an air purifying device that can prevent the secondary pollution risk of re-scattering surely by sterilizing and safely processing, in addition to preventing falling dust and bacteria from scattering in the room. And

Then, in order to achieve this object, the air purifying apparatus according to the present invention, in a housing provided with an inlet and an outlet, a dust collecting filter for removing fine particles from the passed air, and the passed air. The sterilization unit containing hypochlorous acid, the air blowing unit having the discharge ports in at least two directions, and the air blowing unit allows the air sucked from the suction port to pass through the dust collecting filter, and the blowing port. An air purifying air passage blown out from the air purifying air passage, and a purifying air passage for supplying the air that has passed through the dust collecting filter inside the housing to the upstream side of the dust collecting filter by further passing through the sterilizing portion. Provided, the blower unit is provided on the downstream side of the dust collecting filter, the sterilization unit is provided in a tray arranged below the dust collecting filter, the dust collecting filter has a surface on the upstream side in a plan view. The tray is arranged so as to fit in the tray, and an opening adjacent to the upstream side surface of the dust collecting filter is formed in the upper part of the tray on the downstream side of the sterilization section, and the upstream side of the sterilization section is formed. In addition, an inflow port communicating with the discharge port of the blower unit is formed to achieve the intended purpose.

According to the present invention, in a housing provided with a suction port and a blowing port, a dust collection filter for removing fine particles from the passed air, a sterilization unit for containing hypochlorous acid in the passed air, and at least By a blower unit having discharge ports in two directions, an air-cleaning air duct that allows the air sucked from the suction port by the blower unit to pass through the dust collecting filter, and blows out from the blowout port, and the blower unit, And a purifying air passage for supplying the air that has passed through the dust collecting filter inside the housing to the upstream side of the dust collecting filter by further passing through the sterilization portion, and the air blowing portion is located downstream of the dust collecting filter. Provided to the side, the sterilization unit is provided in the tray arranged below the dust collecting filter, the dust collecting filter is arranged so that the upstream side surface is accommodated in the tray in a plan view, An opening is formed in the upper part adjacent to the upstream surface of the dust collecting filter on the downstream side of the sterilization unit, and an inlet port communicating with the outlet of the blower unit is provided on the upstream side of the sterilization unit. Due to the formed structure, the particles of bacteria and viruses collected on the dust collection filter are strongly sterilized and suppressed by hypochlorous acid, and the particles falling through the opening are collected in the tray. be able to. The tray stores an aqueous solution of hypochlorous acid, which can strongly remove and control the fine particles that have fallen, and can reliably prevent secondary contamination due to re-dispersion.

1 is a schematic side view of an air purification device according to a first embodiment of the present invention. Schematic front view showing the configuration in the tray of the air purification device 2 is a schematic side view of an air purification device according to a second embodiment of the present invention ((a) a diagram showing an operation during indoor purification, (b) a diagram showing a main body internal circulation operation) The figure which shows operation|movement by the air purifying apparatus of Embodiment 3 of this invention ((a) Schematic which shows discharge|release operation|movement into a room, (b) Schematic which shows main body internal circulation and upward blowing operation). Fourth Embodiment A schematic side view of an air purification device according to a fourth embodiment of the present invention. The figure which shows the structure in the tray of the same air purifier ((a) The schematic front view which shows the structure in the tray of the same air purifier, (b) The figure which shows the cross-sectional schematic of a gas-liquid contact means) Schematic structural diagrams of gas-liquid contact means of the same air purification device ((a) a diagram showing a multilayer structure of the suction surface, (b) an enlarged diagram and a diagram showing the flow of the hypochlorous acid aqueous solution)

An air purifying apparatus according to claim 1 of the present invention includes a dust collecting filter for removing fine particles from the passed air and a hypochlorous acid contained in the passed air in a housing provided with an inlet and an outlet. A sterilizing unit for controlling, an air blowing unit having outlets in at least two directions, and an air purifying air passage for blowing air sucked from the suction port through the dust collecting filter by the blowing unit and blowing from the blowing port. And a purifying air passage for supplying the air that has passed through the dust collecting filter inside the housing to the upstream side of the dust collecting filter by further passing through the disinfecting portion by the air blowing portion, and the air blowing portion Provided on the downstream side of the dust collection filter, the sterilization unit is provided in a tray arranged below the dust collection filter, so that the upstream side surface of the dust collection filter fits in the tray in plan view. The upper part of the tray is formed with an opening adjacent to the upstream surface of the dust collecting filter on the downstream side of the sterilization unit, and the air outlet of the blower unit is provided on the upstream side of the sterilization unit. An inflow port communicating with the outlet is formed.

Thereby, fine particles such as bacteria and viruses collected on the dust collection filter are hypochlorous acid released from the sterilization unit, which acts uniformly on the dust collection filter through the purification air passage, Fine particles such as bacteria and viruses on the dust collecting filter will be immediately sterilized. Further, since hypochlorous acid has a function of decomposing the odorous component adsorbed on the dust collecting filter or the air passage, a secondary effect of preventing re-emission of the odor from the inside of the main body can be obtained. Further, since hypochlorous acid is stored in an aqueous solution for a long period of time, hypochlorous acid is continuously volatilized and released spontaneously even when stopped, and the action can be continued. Further, since the upstream surface of the dust collection filter is arranged so as to fit in the tray, and the communicating openings are arranged vertically so as to be adjacent to each other, when the particulates accumulated during the stop fall, the particulates are Can be reliably received by the tray, and can be prevented from flowing out and scattering outside the main body. Since the aqueous solution containing hypochlorous acid having a high disinfecting effect is stored in the tray, fine particles such as bacteria and viruses that have fallen can be inactivated by the effect of this hypochlorous acid.

Further, the air purification apparatus according to claim 2 is provided with a blowout shutter which can be opened and closed at the blowout port, circulates in the purification air passage with the blowout shutter closed, and removes the inside of the main body with hypochlorous acid. It is configured to sterilize.

As a result, by closing the outlet and only circulating inside the purification air duct inside the main body, it is possible to increase the amount of air that circulates inside the purification air passage without being discharged to the outside of the main body. Since the amount of hypochlorous acid that acts on the dust collecting filter can be increased, even highly resistant microorganisms such as fungi and spores can be reliably sterilized.

The air purifying apparatus according to claim 3 is provided with an opening/closing hypochlorous acid blowout port and a hypochlorous acid blowout shutter for opening/closing the hypochlorous acid blowout port at a lower part of the front surface facing the room, and the opening is provided. A structure in which a recirculating air passage shutter that can be opened and closed is provided in the part, and the hypochlorous acid outlet is provided at a position downstream of the sterilization part and upstream of the opening to release hypochlorous acid into the room. It is what

As a result, not only the air passage of the main body and the dust filter are sterilized, but also by opening the hypochlorous acid outlet, the released hypochlorous acid drops on the indoor surface separated from the main body, especially on the floor surface. As a result, the dust and air on the floor, which is a source of indoor pollution, can be sterilized.

Further, in the air purification device according to claim 4, a dust collecting filter for removing fine particles from the passed air and a odor component of the passed air are contained in a housing provided with a suction port and an outlet port. A deodorizing section for deodorizing by bringing the solution into gas-liquid contact, a blower section having discharge ports in at least two directions, and the blower section allows the air sucked from the suction port to pass through the dust collecting filter, and blows out. An air purifying air passage blown out of the mouth, and a purifying air passage for supplying the air that has passed through the dust collecting filter inside the housing to the upstream side of the dust collecting filter by further passing through the deodorizing portion by the air blowing portion. The blower unit is provided on the downstream side of the dust collecting filter, the deodorizing unit is provided in a tray arranged below the dust collecting filter, and the dust collecting filter has a surface on the upstream side in plan view. It is arranged so as to fit in the tray, and an opening is formed in the upper part of the tray adjacent to the upstream surface of the dust collecting filter on the downstream side of the deodorizing unit, and the air blower is provided on the upstream side of the deodorizing unit. In this configuration, an inflow port communicating with the discharge port of the section is formed.

As a result, when air is passed through the gas-liquid contacting means, the odorous component comes into contact with the water film formed inside the gas-liquid contacting means, and the odorous component is absorbed. Further, the water that has absorbed the odorous components is naturally flowed down and collected in the tray 7, whereby the re-emission of the odorous components can be prevented. The deodorizing effect is exhibited by these two effects. Further, hypochlorous acid molecules are volatilized from the hypochlorous acid aqueous solution adhering to the gas-liquid contacting means, and evenly contact the surface of the dust collecting filter to sterilize the dust collecting filter. That is, not only dust and sterilization of aerosols such as microorganisms in the air but also deodorization of odorous components in the air can be performed, so that an air purification device with high air purification efficiency can be obtained.

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

(Embodiment 1)
FIG. 1 shows a schematic diagram of the internal structure of the air purification device 1 of the present embodiment.

The air purification device 1 includes a main body case 2 having a substantially box shape, a substantially square suction port 3 for sucking indoor air on a housing surface of the main body case 2, and a substantially air-purified air outlet on an upper surface of the main body. A quadrangular outlet 4 is provided.

Inside the main body case 2, a substantially quadrangular dust collecting filter 5 which allows air to pass therethrough and removes fine particles in the air is arranged perpendicularly to the flow direction of the air, thereby performing air cleaning. The dust collecting filter 5 is fixed so as to be in close contact with the support frame 6 provided on the main body case 2 so that the air to be sucked does not leak from the gap around the dust collecting filter 5. Further, below the main body case 2, a tray 7 for storing the hypochlorous acid aqueous solution is formed, and a sterilization section 8 for forming hypochlorous acid in the air passed through the tray 7 is formed.

The blower unit 9 that blows air is arranged adjacent to the downstream side of the dust collecting filter 5.

The air outlet of the blower unit 9 has a structure capable of ejecting air in at least two directions. The air outlet 9 has an upper outlet 10 that discharges air mainly toward the upper side, and a lower outlet that discharges air downward. Form the outlet 11.

The upper outlet 10 of the blower 9 communicates with the outlet 4 provided on the upper surface of the main body.
The lower discharge port communicates with the tray 7 and the sterilization unit 8 and further with the upstream side of the dust collecting filter 5.

Then, the air that has been sucked into the main body through the suction port 3 is passed through the dust collecting filter 5, and the air purifying air passage 12 that is blown out through the blowing port 4 and the air that has passed through the dust collecting filter 5 inside the main body are further removed. The purification air passage 13 is formed and provided to the upstream side of the dust collecting filter 5 that has passed through the bacteria portion 8.

The sterilization unit 8 provided in the purification air passage 13 is installed so as to be impregnated with the hypochlorous acid aqueous solution in the tray 7 that stores the hypochlorous acid aqueous solution. The sterilization unit 8 for releasing hypochlorous acid is for spraying hypochlorous acid water in the form of mist or volatilizing it in the form of gas, and in the present embodiment, focusing particularly on volatilization. The volatilizing means 14 is used.

The volatilizing means 14 is for sucking up the hypochlorous acid aqueous solution and continuously volatilizing a constant amount of hypochlorous acid in the passing air to release the hypochlorous acid to the purification air passage 13. The surface is formed so as to be in contact with the purification air passage 13. The amount of volatilized hypochlorous acid can be adjusted according to the concentration of the hypochlorous acid aqueous solution in the tray 7. Further, the tray 7 is provided with a hypochlorous acid water supply means 15 for supplying hypochlorous acid water so that the tray 7 can be supplied with an aqueous solution of hypochlorous acid having a predetermined concentration so as to maintain a constant water level. To do. Further, drainage means 16 for draining the hypochlorous acid aqueous solution in the tray 7 is formed below the tray 7.

The tray 7 is arranged below the dust collecting filter 5. That is, the sterilization unit 8 is provided in the tray 7 arranged below the dust collecting filter 5.

Furthermore, the tray 7 is positioned on the upstream side surface of the dust collecting filter 5, that is, immediately below the suction surface 17. Specifically, an opening 18 adjacent to the suction surface 17 of the dust collecting filter 5 is formed in the upper portion of the tray 7 on the downstream side of the sterilization unit 8. That is, the dust collecting filter 5 is arranged to be inside the tray 7 in a plan view, and the suction surface 17 that is an upstream surface of the dust collecting filter 5 is arranged so as to be accommodated in the tray 7. .. This makes it easier for the volatilized hypochlorous acid to directly act on the suction surface of the dust collection filter 5 that is adjacent to the dust collection filter 5. It is possible to prevent re-dispersion by sterilizing strongly by the action of hypochlorous acid.

Further, an inflow port 19 communicating with the lower discharge port 11 is formed on the upstream side of the sterilization unit 8. The inflow port 19 can be provided at the top of the tray.

Further, by providing the tray 7 below the main body in this way, it is possible to establish a positional relationship in which even if water spills, the tray 7 does not come into contact with the electric system in the main body, which is preferable.

The pressure loss is adjusted by setting the air volume of the blower unit 9 and the air passage cross-sectional areas of the air purification air passage 12 and the purification air passage 13 so that the air volume output from the air outlet 4 of the main body case 2 becomes a predetermined value. To do.

A volatilizing means 14 for volatilizing hypochlorous acid is formed inside the purification air passage 13, and air is ventilated along the surface of the volatilizing means 14. Hypochlorous acid molecules are volatilized from the hypochlorous acid aqueous solution, and when air flows on the surface of the hypochlorous acid aqueous solution, hypochlorous acid is contained in the air. Therefore, the air circulating in the main body contains hypochlorous acid. The air containing hypochlorous acid uniformly contacts the surface of the dust collecting filter 5, and the dust collecting filter 5 is continuously exposed to hypochlorous acid to be sterilized. The purification air passage 13 is a path that returns from the lower outlet 11 of the air blower 9 to the dust collecting filter 5. Since the pressurized space on the downstream side of the blower unit 9 and the depressurized space in front of the dust collection filter 5 are connected to each other, air is ventilated toward the upstream side of the dust collection filter 5.

The tray 7 has a substantially box shape with an open upper surface, and has a structure capable of storing a hypochlorous acid aqueous solution, and is arranged at the bottom of the main body. In order to facilitate the maintenance of the tray 7, for example, it is preferable that the tray 7 be slidable in the horizontal direction from the main body case 2 so as to be attachable and detachable.

The blower unit 9 is provided inside the main body case 2 and communicates with and is connected to the subsequent stage of the dust collecting filter 5. The blower unit 9 includes at least a motor, a fan, a casing, and a discharge port for discharging air. The upper discharge port 10 of the blower unit 9 is connected to the air cleaning air passage 12 so as to be in close contact therewith, and the purified air is supplied from the air outlet 4 into the room. It is preferable that the fan generate a required air volume even if the pressure loss of the dust collecting filter 5 and the pressure relationship between the air purification air passage 12 and the purification air passage 13 are sufficient, and a centrifugal sirocco type fan is preferable.

The volatilizing means 14 for volatilizing the hypochlorous acid holds the hypochlorous acid water on the surface and makes contact with the air, and has a flat plate shape, a wavy shape, a fibrous shape, a lattice shape, a mesh shape, or the like on the surface. It is preferable that the liquid can be adhered to it, but the mesh-like shape is preferable because it has a large amount of adhered water and can be easily brought into contact with air. In order to stably volatilize the surface of the volatilization means 14 so as not to increase the ventilation resistance, the surface of the volatilization means 14 is arranged so that the airflow flows along the surface. Since the volatilization amount depends on the wind speed, by making the surface parallel to the direction of the air flow, it is possible to suppress the turbulence of the air flow and to volatilize stably. It is more preferable that the volatilization means 14 increase the amount of volatilization when the material is formed into a three-dimensional shape. For example, a multilayer structure using a plurality of flat plates, or a curved surface, a cylindrical shape, a tubular shape, and a shape combining a plurality of them, but in order to stably supply the hypochlorous acid water to the surface, Good to have. The cylindrical volatilizing means 14 is rotatably built in the tray 7 and can be stably supplied with hypochlorous acid water on the surface of the volatilizing means 14 by rotating during rotation. The cylindrical upper surface is arranged in the purification air passage 13 so as to be along the direction of the air flow.

As a material forming the volatilizing means 14, a material that is less reactive to hypochlorous acid water, that is, a material that is less deteriorated by hypochlorous acid water, such as a polyolefin resin (polyethylene resin, polypropylene resin, etc.), PET ( Polyethylene terephthalate resin), vinyl chloride resin, fluorine resin (PTFE, PFA, ETFE, etc.), cellulosic material or ceramic material is used, and polyester is adopted in this embodiment.

The dust collecting filter 5 is an air purifying filter formed of fibers such as non-woven fabric in a pleated shape, and a filter having medium performance, high performance, HEPA, ULPA or the like can be used. Since the dust collecting filter 5 gradually becomes clogged and its ventilation resistance increases, it has a detachable structure so that it can be replaced periodically. The material of the dust collecting filter 5 is not particularly specified as long as it has a certain durability against hypochlorous acid such as resin or glass fiber. In addition, a functional material that enhances the disinfecting action and the deodorizing action may be blended on the surface of the dust collecting filter 5, and the use of a catalyst material, amines, or the like increases the activity or maintains the durability. It is preferable because the function is improved.

The hypochlorous acid water supply means 15 is for preparing the hypochlorous acid aqueous solution and supplying the hypochlorous acid aqueous solution to the tray 7 through a pipe or a water passage. The aqueous solution of hypochlorous acid may be any one that contains non-dissociated molecules of hypochlorous acid (HOCl), and can be diluted with sodium hypochlorite or by electrolyzing water containing chloride ions. Although it is prepared, an electrolysis type is preferable because the concentration can be easily adjusted and chemicals can be easily handled. In the electrolysis method, powdered or tablet-shaped sodium chloride in tap water that has been stored in advance, dilute hydrochloric acid solution of known concentration, or an aqueous solution containing chloride ions prepared by adding both is used as a base material such as titanium. It is generated by electrolysis with an insoluble electrode on which platinum or iridium is formed. Hypochlorous acid water having a hydrogen ion concentration of 2.2 to 8.6 is produced. When electricity is applied to the electrode, chlorine is generated at the electrode interface on the anode side and immediately dissolved in water to generate hypochlorous acid water. Since the amount of this hypochlorous acid water produced depends on the amount of electricity applied, it is preferable to obtain the amount of electricity applied to the electrodes in advance and to apply electricity at appropriate timing to adjust the concentration within a predetermined concentration range.

The concentration of the hypochlorous acid aqueous solution and the hydrogen ion concentration must be within a range capable of releasing hypochlorous acid necessary for disinfection, and the pH is 5.0 mg/L or more and 200 mg/L or less and pH 5.0.
To 8.6, more preferably 30 mg/L or more and 80 mg/L or less and slightly acidic hypochlorous acid water having a pH of 5 to 6 has a high bactericidal effect. The concentration of hypochlorous acid water may be controlled by the amount of electricity supplied to the electrode in the case of the electrolysis type and by the injection amount of the stock solution in the case of the chemical type. It is known that within this concentration range, vegetative bacteria, fungi, viruses, mycobacteria, bacterial spores, etc. can be sterilized and suppressed.

In order for hypochlorous acid volatilized from hypochlorous acid water to obtain a disinfecting action, the gas concentration must be 0.01 ppm or more. In addition, considering the health effects of suction to the human body, it should be 0.5 ppm or less. It is preferably 0.02 ppm or more and 0.1 ppm or less. It is known that within this concentration range, vegetative bacteria, viruses, fungi, etc. can be sterilized and suppressed.

When the hypochlorous acid gas is volatilized from the hypochlorous acid water supplied to the tray 7 by ventilation, the concentration of the hypochlorous acid water is reduced and the amount of volatilization is reduced. Therefore, it is necessary to prevent the volatilization amount of hypochlorous acid gas from falling below a predetermined concentration. For example, the hypochlorous acid water in the tray 7 may be appropriately supplied and drained, and a new hypochlorous acid aqueous solution is supplied from the hypochlorous acid water supply means 15 to maintain the water quality. The drainage is discharged from the drainage means 16 through a pipe or a pipe connected to the tray 7 by a water passage. The drainage means 16 is provided with a valve that can be opened and closed so that it can be easily controlled through piping or the like. Alternatively, a suction pump may be provided. It is more preferable to use these to electrically drain the water, because automatic operation can be performed by the program operation control. The drained water is either stored in a tank or drained directly to a sewer pipe.

FIG. 2 is a schematic front view showing the configuration including the tray 7 for storing the hypochlorous acid aqueous solution. A hypochlorous acid aqueous solution is stored in the tray 7, and a volatilizing means 14 is formed so as to be impregnated therein and a hypochlorous acid water supplying means 15 is formed so as to maintain a constant water level. In either case, it is preferable that the tray 7 can be taken in and out from above, because the structure can be simplified. Furthermore, the drainage means 16 provided at the lower part of the tray 7 is arranged so as to be diagonal to the hypochlorous acid water supply means 15, so that the hypochlorous acid aqueous solution inside the tray 7 can be effectively drained. It is preferable to do so.

Hypochlorous acid will be described in more detail. It is known that hypochlorous acid becomes mainly gaseous hypochlorous acid gas when released into the air. This hypochlorous acid gas is a gas containing non-dissociated molecules of hypochlorous acid (HOCl) contained in hypochlorous acid water, and is considered to be the main body of action. It is known that the concentration of non-dissociated hypochlorous acid molecule (HOCl) varies depending on the hydrogen ion concentration in hypochlorous acid water, and the dissociation constant (pKa) is 7.5. It is known that the non-dissociated molecule of hypochlorous acid (HOCl) has a constant vapor pressure based on Henry's law and has a property of volatilizing from hypochlorous acid water. Therefore, when air is passed through the liquid surface of hypochlorous acid water, the air in contact with the liquid surface is continuously replaced, and the vapor pressure of the hypochlorous acid molecule (HOCl) on the surface is lowered, and the hypochlorous acid is continuously supplied. Acid molecules (HOCl) can be volatilized. Furthermore, this hypochlorous acid molecule (HOCl) is known to have a strong bactericidal action. Therefore, even if the hypochlorous acid water is not directly acted on, the gas containing the hypochlorous acid molecule (HOCl) is passed through the dust collecting filter 5 to collect the bacteria and viruses collected on the surface of the dust collecting filter 5. Can be sterilized.

In the above-described configuration, the air purifying device 1 collects the bacteria and viruses contained in the air taken in from the room with the dust collecting filter 5 and also the dust collecting filter 5 by the action of hypochlorous acid volatilized from the volatilizing means 14. The surface of can be sterilized. Bio-aerosols such as bacteria and viruses adhering to the surface of the dust collecting filter 5 may cause secondary pollution due to the most scattering of fine particles when the bio-aerosol such as bacteria or viruses is attached or detached or is operated from a stopped state. In the configuration of the present embodiment, by ventilating the hypochlorous acid gas through the dust collection filter 5, these bacteria and viruses can be continuously sterilized and suppressed. Further, the particles that have fallen through the opening 18 provided below the dust collecting filter 5 are collected in the tray 7. Therefore, the problem of such contamination can be solved.

The operation process of the air purifier 1 will be further described. First, the hypochlorous acid water supply means 15 produces a hypochlorous acid aqueous solution having a predetermined concentration. Next, this hypochlorous acid aqueous solution is supplied to the tray 7, and the cylindrical volatilizing means 14 is rotated by a motor to continuously impregnate the surface with the hypochlorous acid aqueous solution and deposit it. Subsequently, when the blower unit 9 is operated, the contaminated air sucked from the suction port 3 is collected by the dust collecting filter 5. The clean air that has passed through the dust collecting filter 5 is supplied to the room through the air clean air passage 12 from the outlet 4 and is circulated through the purifying air passage 13. When the purified air passes through the purification air passage 13, circulating air is aerated on the surface of the volatilizing means 14, hypochlorous acid is volatilized according to the wind speed, and air containing hypochlorous acid is a dust collection filter. Join the previous stage of 5. As a result, the hypochlorous acid uniformly acts on the dust collecting filter 5 together with the indoor air, and acts on the bacteria and viruses collected on the filter to continuously remove the bacteria.

Further, after stopping the operation of the main body, fine particles such as bacteria and viruses are collected and accumulated on the suction side surface of the dust collecting filter 5, but the fine particles that have fallen due to shock, vibration, or natural separation are It is collected in the lower tray and sterilized with an aqueous solution of hypochlorous acid. Before the next operation, it can be prevented from being discharged together with the drainage from the drainage means 16 to the outside of the tray 7 and scattered inside the room.

(Embodiment 2)
FIG. 3 shows another mode for performing the internal sterilization operation without blowing air from the main body in the air purification device 1. A mechanical blowing shutter 20 that can be opened and closed is formed at the blowing port 4, and the blowing port 4 is closed. The blowing shutter 20 is formed of at least one flat plate having the same shape with respect to the surface of the blowing port, and is rotatable about, for example, one side on one side,
A stepping motor is connected to the shaft so that it can be opened and closed depending on the amount of rotation.

In the above configuration, the outlet 4 is closed by the outlet shutter 20, and the air containing hypochlorous acid is continuously circulated in the main body through the purifying air passage 13. By closing, the concentration of hypochlorous acid increases, and the amount of hypochlorous acid that acts on the dust collection filter 5 and the inner surface of the main body can be increased, so that the main body can be sterilized strongly. it can.

Although FIG. 3(a) shows an operating state during normal operation, when the blowing shutter 20 is closed and the blower unit 9 is operated as shown in FIG. 3(b), the air flow does not flow into the air-cleaning air passage 12. Moreover, the entire amount will flow into the purification air passage 13, and the air containing hypochlorous acid can be continuously circulated in the main body. Since hypochlorous acid continues to volatilize continuously, the concentration of hypochlorous acid in the purification air passage 13 gradually increases. As the concentration increases, the disinfecting power of hypochlorous acid increases, so that it is possible to obtain a disinfecting effect even on acid-fast bacilli and bacterial spores that are difficult to die at low concentrations. It is preferable that such an operation is programmed in the circuit board in advance and the automatic operation is performed periodically or the operation is performed for a certain period of time before the main body is stopped, because the bacteria can be surely removed.

(Embodiment 3)
FIG. 4 shows another form of the air purifying device 1 that discharges hypochlorous acid into the room. Below the surface of the main body case 2, a hypochlorous acid outlet 21 is formed which communicates with the outside of the main body case 2 after the volatilization means 14 of the purification air passage 13. Furthermore, a mechanical hypochlorous acid blowout shutter 22 that can be opened and closed at the hypochlorous acid blowout port 21 and an opening portion 18 below the dust collection filter 5 for adjusting the amount of circulating air returning to the dust collection filter 5. A mechanical circulating air duct shutter 23 that can be opened and closed is formed. The hypochlorous acid blowing shutter 22 is formed of at least one substantially rectangular flat plate so as to overlap with the hypochlorous acid blowing port 21 formed in a substantially square shape, and a main body case with one side as an axis. 2 rotatably arranged. A stepping motor may be connected to this shaft to control opening/closing by the amount of rotation of the motor, or a handle shape may be formed so as to open/close manually from the outside of the main body case 2. The circulating air duct shutter 23 is also formed into a rotatable flat plate structure, or is arranged parallel to the opening 18 so that it can effectively operate in a limited space in the main body. You may make it open and close by supporting on two opposite sides and sliding on one axis.

In the above-mentioned configuration, when hypochlorous acid is released indoors, it acts directly on the bacteria and viruses contained in the indoor air or the bacteria and viruses attached to the indoor surface to sterilize them. You can In FIG. 4A, the hypochlorous acid outlet 21 is opened to release hypochlorous acid near the floor surface. By opening and closing, hypochlorous acid can be released only when necessary. It is preferable to adjust the opening because it is possible to adjust the amount discharged into the room and the amount circulated to the filter. Further, FIG. 4B shows that the hypochlorous acid blowing shutter 22 is closed and the circulation air passage shutter 23 is opened so that the dust collecting filter 5 is circulated.

It should be noted that the configuration of both FIG. 3 and FIG. 4 may be combined, and it is convenient and preferable to install electrical control pre-programmed in a microcomputer or the like so that these operation controls can be automatically performed. ..

As described above, it is possible to realize the air purifying apparatus 1 that can sterilize the indoor air and prevent secondary contamination of microorganisms due to re-scattering. As a result, the person in the target area can be prevented from being infected with microorganisms that may affect the human body through the air.

(Embodiment 4)
In the present embodiment, another form of the air purification device 1 of the first embodiment will be described.

Although the air purifying apparatus 1 is described as an example including the disinfecting section 8, the air purifying apparatus 31 of the first embodiment is provided with the deodorizing section 38 instead of the disinfecting section 8. Note that, for ease of understanding, the same components as those of the first to third embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 5 is a schematic diagram showing the internal structure of the air purification device 31 of the present embodiment.
A tray 7 for storing an aqueous solution of hypochlorous acid is formed below the main body case 2, and an odor component contained in the air passed through the tray 7 is brought into gas-liquid contact with the aqueous solution of hypochlorous acid to deodorize. The part 38 is formed.

Similar to the first embodiment, the lower outlet 11 of the air blower 9 communicates with the tray 7 and the deodorizer 38, and further with the upstream side of the dust collecting filter 5. In the main body, the air sucked from the suction port 3 is passed through the dust collecting filter 5, and the air purifying air passage 12 blown out from the blowing port 4 and the air passed through the dust collecting filter 5 inside the main body are further deodorized. After passing through 38, the purifying air passage 13 for supplying to the upstream side of the dust collecting filter 5 is formed and provided. In order to deodorize the air, it is important to ensure that the air passing through the deodorizing section 38 comes into contact with the hypochlorous acid aqueous solution.

Therefore, the deodorizing section 38 is provided with a gas-liquid contact means 39 and a water circulation means 40 for supplying hypochlorous acid water to the gas-liquid contact means 39.

The gas-liquid contact means 39 is a porous body arranged so as to block the purification air passage 13 in the tray 7.

FIG. 6A is a schematic front view showing the configuration including the tray 7 that stores the hypochlorous acid aqueous solution. As shown in FIG. 6A, the lower portion of the gas-liquid contact means 39 is submerged in the hypochlorous acid aqueous solution stored in the tray 7. The water circulation means 40 is a pump 41 for drawing up the hypochlorous acid aqueous solution in the tray 7 and a pipe 42 for moving the hypochlorous acid aqueous solution above the gas-liquid contacting means 39, and at the end of the pipe 42 from the gas-liquid contacting means 39 above the hypochlorous acid. A dropping unit 43 for dropping the aqueous solution is provided.

FIG. 6B is an enlarged schematic view of the A cross section in FIG. The drip portion 43 is provided above the gas-liquid contact means 39, and an appropriate interval and opening are provided so that the pumped hypochlorous acid aqueous solution can flow down uniformly.

That is, the gas-liquid contact means 39 is supplied with the hypochlorous acid aqueous solution from above.

The gas-liquid contact means 39 uses a multilayer body having a void 44 penetrating in the direction of air flow, so that the hypochlorous acid aqueous solution supplied from the dropping portion 43 forms a water film along the surface of the void 44. Therefore, the air passing through the voids 44 can easily come into contact with the hypochlorous acid aqueous solution.

More specifically, the gas-liquid contact means 39 is arranged so as to block the purification air passage 13 so that the air can efficiently come into contact with it, and allows the air flow to flow inside the gap 44. Since the absorption efficiency of the odorous component with respect to the aqueous solution of hypochlorous acid depends on the time during which the air contacts the water film, the gas-liquid contacting means 39 forms the void 44 penetrating the gas-liquid contacting means 39 in the direction of the air flow. By providing the contact length of a certain length or longer, the contact time can be extended and the deodorization can be efficiently performed. It is more preferable that the gas-liquid contacting means 39 is configured to have a three-dimensional shape because the contact time between the hypochlorous acid aqueous solution and air can be increased. For example, a sponge-like thin flat plate having a property of absorbing water is formed on a corrugated plate, and the flat plate is overlapped with the flat plate to form a void 44, or a curved surface, a cylindrical shape, a cylindrical shape, or a combination thereof. However, in order to increase the surface area and efficiently bring the hypochlorous acid aqueous solution into contact with air, it is preferable that the corrugated plate has a multi-layered structure.

FIG. 7A shows an example of the structure of the gas-liquid contact means 39 having a multilayer structure in which a corrugated plate and a flat plate are combined, as viewed from the front. Further, an enlarged view is shown in FIG.

By alternately laminating the corrugated plates and the flat plates, the voids 44 penetrating in the depth direction can be formed. Further, by using a sponge-like thin flat plate, the hypochlorous acid aqueous solution uniformly drops inside the material along the arrow, and the hypochlorous acid aqueous solution can be efficiently spread over the entire material. Further, since water descends while penetrating the inside of the material, the inside of the void 44 and the opening surface 45 are not blocked by water droplets, and it is possible to prevent the ventilation resistance from increasing. Further, at this time, the corrugated plate-shaped multilayer structure is arranged in the purification air passage 13 so that the opening surface 45 faces the air flow and the air flow flows along the surface of the corrugated plate. In this way, it is possible to form the gap 44 penetrating in the gas-liquid contact means 39 in the direction of air flow.

As a material forming the gas-liquid contacting means 39, a material that is less reactive to hypochlorous acid water, that is, a material that is less deteriorated by an aqueous solution of hypochlorous acid, such as a polyolefin resin (polyethylene resin, polypropylene resin, etc.), PET (polyethylene terephthalate resin), vinyl chloride resin, fluorine-based resin (PTFE, PFA, ETFE, etc.), cellulose-based material, ceramic-based material, or the like is used. In this embodiment, polyester is used.

As the material, a fine fibrous material may be formed into a flat plate shape, a material in which fibers are fixed in a three-dimensional shape may be thinly cut, or a three-dimensional woven fabric, a knitted material, a foam material, or the like may be used.

Further, the tray 7 is located on the upstream side surface of the dust collecting filter 5, that is, immediately below the suction surface 17. Specifically, an opening 18 adjacent to the suction surface 17 of the dust collecting filter 5 is formed in the upper portion of the tray 7 on the downstream side of the deodorizing portion 38. That is, the dust collecting filter 5 is arranged to be inside the tray 7 in a plan view, and the suction surface 17 that is an upstream surface of the dust collecting filter 5 is arranged so as to be accommodated in the tray 7. ..

The tray 7 has a substantially box shape with an open upper surface, and has a structure capable of storing a hypochlorous acid aqueous solution, and is arranged at the bottom of the main body. In order to facilitate the maintenance of the tray 7, the gas-liquid contacting means 39, and the water circulating means 40, it is preferable that the tray 7 is slidable in the horizontal direction from the main body case 2 so as to be detachable.

In the above configuration, the air purification device 1 can collect bacteria and viruses contained in the air taken in from the room with the dust collection filter 5 and deodorize odorous components in the air by the gas-liquid contact means 39. Therefore, it is possible to supply air with reduced odor and increased cleanliness. Further, in the deodorizing section 38, it is possible to volatilize hypochlorous acid from the hypochlorous acid aqueous solution by flowing air into the gap 44. A certain amount of hypochlorous acid is continuously volatilized in the passing air, and hypochlorous acid is released downstream. The amount of volatilized hypochlorous acid can be adjusted according to the concentration of the hypochlorous acid aqueous solution in the tray 7.

That is, the surface of the dust collection filter 5 can be sterilized by the action of the hypochlorous acid volatilized from the gas-liquid contact means 39.

The operation process of the air purifier 31 will be further described. First, the hypochlorous acid water supply means 15 produces an aqueous solution of hypochlorous acid having a predetermined concentration. Next, this hypochlorous acid aqueous solution is supplied to the tray 7, the pump 41 of the water circulation means 40 is driven, and the hypochlorous acid aqueous solution is continuously supplied from above the gas-liquid contact means 39, thereby It can be attached to the surface of the void 44 of the liquid contact means 39.

Subsequently, when the blower unit 9 is operated, the contaminated air sucked from the suction port 3 is collected by the dust collecting filter 5. The clean air that has passed through the dust collecting filter 5 is supplied to the room through the air clean air passage 12 from the outlet 4 and is circulated through the purifying air passage 13. When the air from which the dust has been removed passes through the purifying air passage 13, the gas-liquid contact means 39 makes contact with the hypochlorous acid aqueous solution to remove the contained odorous components. Further, hypochlorous acid volatilizes according to the wind speed, and air containing hypochlorous acid can be merged with the pre-stage of the dust collection filter 5. As a result, the hypochlorous acid can act not only on the indoor air but also on the dust collecting filter 5, and continuously act on the bacteria and viruses collected on the dust collecting filter 5 to remove the bacteria. it can.

Further, the dust collecting filter 5 is arranged to be inside the tray 7 in a plan view, and the suction surface 17 which is an upstream surface of the dust collecting filter 5 is arranged so as to be accommodated in the tray 7. .. This makes it easier for the volatilized hypochlorous acid to directly act on the suction surface of the dust collection filter 5 that is adjacent to the dust collection filter 5. It is possible to prevent re-dispersion by sterilizing strongly by the action of hypochlorous acid. That is, after stopping the operation of the main body, fine particles such as bacteria and viruses collected and accumulated on the suction side surface of the dust collecting filter 5 fall due to shock, vibration and natural peeling and are collected in the lower tray. , Sterilized with an aqueous solution of hypochlorous acid.

As described above, when the gas-liquid contact means 39 for deodorizing the odor component in the air is arranged inside the purification air passage 13 and the gas-liquid contact means 39 is ventilated with air, the gas-liquid contact means 39 The odorous component comes into contact with the water film formed inside, and the odorous component is absorbed. Further, the water that has absorbed the odorous components is naturally flowed down and collected in the tray 7, whereby the re-emission of the odorous components can be prevented. The deodorizing effect is exhibited by these two effects.

Further, hypochlorous acid molecules are volatilized from the hypochlorous acid aqueous solution adhering to the gas-liquid contact means 39 and uniformly contact the surface of the dust collecting filter 5 to sterilize the dust collecting filter 5. You can

That is, it is possible to realize the air purifying device 31 that can sterilize the indoor air and prevent secondary contamination of microorganisms due to re-scattering. As a result, the person in the target area can be prevented from being infected with microorganisms that may affect the human body through the air.

It is expected to be used as an air purification device for sterilizing, sterilizing and disinfecting households, offices and public spaces.

1 Air Purifier 2 Body Case 3 Suction Port 4 Blowout Port 5 Dust Collection Filter 6 Support Frame 7 Tray 8 Disinfection Section 9 Blower Section 10 Upper Discharge Port 11 Lower Discharge Port 12 Air Purification Airway 13 Purification Airway 14 Volatile Means 15 Hypochlorous acid water supply means 16 Drainage means 17 Suction surface 18 Opening 19 Inlet 20 Outlet shutter 21 Hypochlorous acid outlet 22 Hypochlorous acid outlet shutter 23 Circulating air passage shutter 31 Air purifier 38 Deodorizer 39 Gas-liquid contact means 40 Water circulation means 41 Pump 42 Piping 43 Dropping portion 44 Void 45 Opening surface

Claims (4)

In a case with a suction port and a blow port,
A dust collection filter that removes fine particles from the air that has passed through,
A sterilization unit containing hypochlorous acid in the passed air,
A blower unit having discharge ports in at least two directions,
By the air blower, the air sucked from the suction port is passed through the dust collecting filter, and an air purifying air passage blown out from the blowing port,
By the air blower, a purifying air passage that supplies the air that has passed through the dust collection filter inside the housing to the upstream side of the dust collection filter by further passing through the sterilization unit,
The blower unit is provided on the downstream side of the dust collecting filter,
The sterilization unit is provided in a tray arranged below the dust collecting filter,
In a plan view, the dust collecting filter is arranged such that an upstream surface thereof is accommodated in the tray, and an upper surface of the tray is adjacent to an upstream surface of the dust collecting filter downstream of the sterilization unit. Forming an opening,
An air purifier characterized in that an inflow port communicating with a discharge port of the blower unit is formed on the upstream side of the sterilization unit. A blowout shutter that can be opened and closed is provided at the blowout port,
The air purification apparatus according to claim 1, wherein the blowing shutter is closed, circulation is performed in the purification air passage, and the inside of the main body is sterilized with hypochlorous acid. A hypochlorous acid outlet that can be opened and closed at the lower front facing the room,
Provided with a hypochlorous acid blowing shutter for opening and closing the hypochlorous acid blowing outlet,
Provided with a circulating air duct shutter that can be opened and closed at the opening,
The hypochlorous acid outlet is provided at a position downstream of the sterilization unit and upstream of the opening to discharge hypochlorous acid into the room. Air purification device. In a case with a suction port and a blow port,
A dust collection filter that removes fine particles from the air that has passed through,
A deodorizing section that deodorizes the odorous component of the passed air by contacting the hypochlorous acid aqueous solution with gas-liquid.
A blower unit having discharge ports in at least two directions,
By the air blower, the air sucked from the suction port is passed through the dust collecting filter, and an air purifying air passage blown out from the blowing port,
By the air blower, a purifying air passage that supplies the air that has passed through the dust collecting filter inside the housing to the upstream side of the dust collecting filter by further passing through the deodorizing portion,
The blower unit is provided on the downstream side of the dust collecting filter,
The deodorizing unit is provided in a tray arranged below the dust collecting filter,
In a plan view, the dust collecting filter is arranged such that an upstream surface thereof is contained in the tray, and an opening adjacent to an upstream surface of the dust collecting filter is provided at an upper portion of the tray at a downstream side of the deodorizing portion. Forming a part,
An air purifier characterized in that an inflow port communicating with a discharge port of the blower unit is formed on the upstream side of the deodorizing unit.

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