JP4958281B2 - Cleaning device and air cleaning device using the same - Google Patents

Description

  The present invention relates to a cleaning device for cleaning a pollutant removing member installed in a duct type hollow structure and an air cleaning device using the same.

In recent years, from the viewpoint of environmental protection, for example, for greenhouse gases such as carbon dioxide (CO ₂ ), international reduction targets have been set, and afforestation on a global scale aimed at reducing carbon dioxide In response to business, measures such as rooftop greening have been taken in the construction field.

  In terms of health, nitrogen oxide (NOx) and particulate matter (PM) emitted from automobiles, etc. are becoming more stringent, and formaldehyde that causes malodorous substances, tobacco odor and sick house syndrome. Contaminants in living spaces such as are also a social problem.

  As a technology for removing these pollutants contained in the air, a technology for decomposing and removing the pollutants by contacting with a photocatalyst such as titanium oxide activated under light energy such as sunlight, or ozone treatment The removal technique by the use or the technique of adsorption removal with an adsorbent such as activated carbon has been put into practical use.

Also, in a building, a technique for removing contaminants contained in air taken into the building or air discharged outside the building by using a filter using an adsorbent or a photocatalyst has been proposed.
Furthermore, for example, in Patent Documents 1 to 4, a device that reduces pressure loss by arranging a flat plate made of a photocatalyst or a combination of a photocatalyst and an adsorbent in parallel with the flow direction of contaminated air (hereinafter referred to as parallel). (Referred to as plate apparatus).

  However, since these parallel plate devices are not provided with means for adjusting settings such as pressure loss and air cleaning capacity (contaminant removal efficiency) after installation in the field, the type and concentration of pollutants, or wind speed When conditions such as the above change, it is difficult to adjust the above settings according to these conditions. Therefore, for example, when the planned performance at the time of design cannot be ensured, it is necessary to replace the entire apparatus.

  In addition, when connecting the parallel plate device to an existing duct, etc., the existing equipment should be installed by designing the parallel plate device according to the installation environment or by a large-scale construction such as adding supply / exhaust power. Time and effort to meet the specifications of the parallel plate device occurs. In either case, fine adjustment of the setting is often required after installation, but in such a case, it is difficult to adjust the setting.

  On the other hand, as a method for removing outdoor pollutants, for example, a photocatalyst is applied to the surface of a structure such as an outer wall of a building, a guardrail, or a road, and NOx and SOx existing in the surroundings are decomposed and removed by the action of the photocatalyst. A method is being considered. However, when these substances are to be decomposed and removed, catalyst poisoning, in which nitrate or sulfate produced in the photocatalytic reaction accumulates on the surface of the photocatalyst, becomes a major factor in the deterioration of the performance of the photocatalyst. It is necessary to remove inorganic salts. As a method for removing the inorganic salt, for example, washing with rain water may be considered. However, if left as it is, there is a possibility that the washed-out nitrate or sulfate may diffuse into the soil and cause groundwater contamination. For this reason, it is desirable to collect the contaminated water. However, since a large amount of the contaminated water is generated, the cost for the recovery equipment is high, and the vicinity of the structure such as the outer wall of the building or the guardrail described above However, it is difficult to recover the contaminated water at present because it is not suitable for installing recovery equipment.

Therefore, the present inventors, as an air cleaning device that solves the above-mentioned problems, first, a hollow structure body provided with an opening / closing portion on the wall surface, and the air flow direction inside the hollow structure body And an air cleaning device having a pollutant removing member disposed substantially in parallel with and detachable, and a technique relating to this is described in Patent Document 5 (the specification of Japanese Patent Application No. 2006-337700, etc.). is doing.
According to the air cleaning device having such a configuration, it is possible to easily adjust the settings such as the pressure loss and the air cleaning capacity in accordance with the change in conditions such as the type and concentration of pollutants or the wind speed. In addition, the air cleaning means (photocatalyst, adsorbent, etc.) on the surface of the contaminant removing member can be easily replaced and cleaned at an appropriate time.

  However, when NOx and SOx are decomposed and removed by a photocatalyst, the catalyst performance often deteriorates in a short period due to the catalyst poisoning described above, and the frequency of replacing and cleaning the air cleaning means is increased. Even a troublesome work requires a certain amount of time and effort. Further, depending on the installation location of the air cleaning device such as an outside air intake on the side of a building, it may be difficult to frequently replace and clean the air cleaning means.

In addition, as an apparatus which wash | cleans the member installed in the place where replacement | exchange or washing | cleaning is difficult, the automatic regeneration type | mold ventilation apparatus of patent document 6 is known, for example. In this automatic regeneration type ventilator, a differential pressure sensor for measuring the pressure loss is provided in the vicinity of the filter (member to be cleaned), and contamination of the filter is detected based on the measurement result of the differential pressure sensor. In some cases, the filter is automatically cleaned by operating a water supply facility for cleaning, a partitioning mechanism for the cleaning space, and the like.
However, in the automatic regeneration type ventilator, since the sprinkling piping port of the cleaning water supply facility is fixedly installed, it can completely cope with the increase in the number of filters (members to be cleaned), the arrangement change, etc. In addition, the control device automatically controls the cleaning water supply equipment, the partition mechanism, and the like, and accordingly, there is a problem that the system configuration is complicated.
In addition, since the contaminants are removed by passing through the filter, the amount of contaminated air is naturally limited.

Japanese Patent Laid-Open No. 10-286436 JP 2001-12095 A JP 2001-137665 A Japanese Patent No. 3484208 Japanese Patent Application No. 2006-337700 JP 2004-301423 A

  The present invention has been made in view of such circumstances, and easily and flexibly responds to changes in the number and arrangement of contaminant removing members while having a function of cleaning the contaminant removing member in the installed state. It is another object of the present invention to provide a cleaning device that can efficiently clean a contaminant removing member with a small amount of cleaning liquid and an air cleaning device using the same.

In order to solve the above-mentioned problem, an air cleaning device according to the present invention described in claim 1 includes a duct-type hollow structure having an air flow path and a detachable state inside the duct-type hollow structure. A pollutant removing member that is installed and has a surface made of a photocatalyst and / or an adsorbent, and a cleaning device that is detachably installed on the upper part of the duct type hollow structure and that cleans the pollutant removing member. The cleaning apparatus is configured by a cleaning pipe that discharges cleaning liquid from above toward the contaminant removing member, and a cleaning liquid reservoir that supplies the cleaning liquid to the cleaning pipe, and the contaminant removing member includes The duct type hollow structure has one or a plurality of upright plate portions, the upright plate portions are arranged substantially parallel to the air flow direction, and are positioned above the upright plate portions. ,each Along the top of the upright plate portion, and it is characterized in that the washing pipes are arranged.

  Here, the duct-type hollow structure can be configured by a substantially U-shaped flow path component member that forms the bottom surface and both side wall surfaces, and a ceiling member that closes the upper opening of the flow channel component member. is there. When a photocatalyst is used for removing contaminants, the ceiling member is constituted by a light transmissive member.

  The cleaning liquid storage section of the cleaning device can be configured by a container or the like that can store a predetermined amount of cleaning liquid set in advance. As a method of attaching the cleaning liquid storage part to the duct type hollow structure, for example, a method of providing an engaging part in the cleaning liquid storage part and engaging it with the side wall of the flow path constituting member of the duct type hollow structure, There is a method of projecting a support part on the inner wall surface of the flow path component member and supporting the cleaning liquid storage part by the support part. However, the cleaning liquid storage part can be detachably attached to the duct type hollow structure. Any method may be used.

  The cleaning liquid may be any liquid such as rain water, ion-exchanged water, distilled water, tap water, etc., as long as it can wash away nitrates, sulfates, dusts and the like adhering to the photocatalyst and the adsorbent. When rainwater is used as the cleaning liquid, for example, a rainwater intake (opening) is provided in the ceiling of the cleaning liquid storage section so that rainwater can be received directly from the rainwater intake, or piping from another location, etc. You may make it introduce via. Whichever cleaning liquid is used, it is desirable to provide an opening / closing means for restricting the inflow of the cleaning liquid at the inlet of the cleaning liquid. By doing so, for example, when it rains for a long period of time, such as during the rainy season, the rainwater intake is closed by opening and closing means to restrict the inflow of rainwater, so that the photocatalyst and adsorbent due to excessive washing are Performance degradation can be suppressed. The opening / closing means may be in any form, such as one that opens and closes the opening with a sliding door member and one that opens and closes the opening with a lid member.

  The cleaning pipe of the cleaning device is preferably connected to the lower end (side surface or bottom surface) of the cleaning liquid reservoir, and when connecting to the bottom surface of the cleaning liquid reservoir, the connecting portion is the lowermost end on the bottom. It is preferable to provide an inclination. In addition, it is desirable to provide a means for preventing clogging due to dust, fallen leaves, and the like, such as a net, a filter, a metal net, and a metal ball, at the connecting portion (or the cleaning liquid inlet). In addition, it is desirable to provide a cleaning tube support for supporting the tip of each cleaning tube in other adjacent cleaning devices, and so that each cleaning tube and cleaning device can be installed in a stable state. Can do.

  Each cleaning pipe is provided with a cleaning liquid discharge port at a position where the cleaning liquid can be discharged toward the contaminant removing member. The number and arrangement of the cleaning liquid discharge ports can be arbitrarily set as long as the contaminant removing member can be cleaned. For example, if the cleaning tube is arranged horizontally and the cleaning liquid discharge ports are provided at predetermined intervals along the longitudinal direction at the lower end position, it is possible to clean the pollutant removing member directly below. If a plurality of cleaning liquid discharge ports are provided in the circumferential direction, it is possible to clean not only the contaminant removing member directly below but also the contaminant removing member adjacent thereto.

  In the cleaning device, it is desirable that the cleaning liquid is discharged to the outside of the duct-type hollow structure when the flow rate of the cleaning liquid exceeds the capacity of the cleaning liquid reservoir. By doing so, it is possible to prevent unnecessary cleaning liquid from being supplied into the duct type hollow structure. In such a structure, the cleaning liquid supplied into the duct type hollow structure can be adjusted by adjusting the diameter of the cleaning liquid discharge port, the capacity of the cleaning liquid reservoir, the inclination angle of the duct type hollow structure, and the like. It is possible to adjust the amount.

Invention according to claim 2, in the air cleaning device according to claim 1, as the cleaning liquid storage unit, a plurality of kinds of cleaning liquid storage unit mounting position and the number of the washing pipe are different are prepared, they cleaning liquid storage The cleaning pipe is configured to be detachable from the part.

According to a third aspect of the present invention, in the air cleaning device according to the first or second aspect , the discharge amount of the cleaning liquid discharged from the cleaning pipe is set to increase toward the upstream side of the air flow path. It is characterized by this.
In order to increase the discharge amount of the cleaning liquid toward the upstream side of the air flow path, for example, the diameter of the cleaning liquid discharge port of the cleaning pipe is increased toward the upstream side of the air flow path, or the capacity of the cleaning liquid reservoir is increased. The upstream side of the road should be enlarged.

The invention according to claim 4 is the ultraviolet cleaning device according to any one of claims 1 to 3 , wherein the pollutant removing member is irradiated with ultraviolet rays on the ceiling of the duct type hollow structure. An irradiating means is disposed, and the cleaning tube is disposed between the ultraviolet irradiating means and the contaminant removing member.
Here, examples of the ultraviolet irradiation means include a black light and an ultraviolet lamp.

A fifth aspect of the present invention is the air cleaning device according to any one of the first to fourth aspects, wherein the pressurized cleaning liquid is supplied to the cleaning liquid storage section. is there.
Specifically, as a method of supplying the pressurized cleaning liquid to the cleaning liquid storage unit, for example, a method of installing a water storage tank at a higher position than the cleaning liquid storage unit and supplying the cleaning liquid from the water storage tank to the cleaning liquid storage unit And a method of supplying the cleaning liquid to the cleaning liquid reservoir through a pressurizing device such as a pump. In the case of such a configuration, it is possible to perform diffusion-type water discharge by changing the cleaning liquid discharge port to a set of a plurality of fine holes.

The invention according to claim 6 is the air cleaning device according to any one of claims 1 to 5 , wherein the cleaning tube is cleaned in a state in which a distal end portion of the cleaning pipe faces an air inflow side of the duct type hollow structure. While the apparatus is arranged, the duct type hollow structure is installed in an inclined state so that the air inflow side is lowered.

In the air cleaning device, a drainage groove communicating with the drain pipe is provided on the bottom surface of the duct-type hollow structure on the air inflow side, and a means for collecting or purifying drainage is connected to or interposed in the drain pipe. You may do it.
Further, the collected waste water may be purified or may be diluted with a large amount of rainwater. Such treated water can also be used as a nutrient source for plants. For example, when the air purifier is installed on the roof, it can be used for roof greening or wall greening.

Furthermore, in the said air purifying apparatus, it is also possible to provide a rainwater intake in the ceiling part of the said washing | cleaning liquid storage part, and to use the rainwater which flowed in from the said rainwater intake as a washing | cleaning liquid.
In the case of such a configuration, it is possible to increase rainwater flowing into the cleaning liquid reservoir by configuring the ceiling of the duct type hollow structure in a gently tapered shape with the installation position of the cleaning liquid reservoir as the bottom. is there.

According to the first aspect of the present invention, it is possible to clean the pollutant removing member while it is installed in the duct type hollow structure, and the cleaning work can be greatly reduced as compared with the prior art. At the same time, the contaminant removing member can be appropriately cleaned even in places where cleaning has been difficult in the past, such as outside air intake on the side of a building.
In addition, since the cleaning device is installed in a detachable manner on the duct-type hollow structure, the cleaning device does not hinder the installation or removal of the contaminant removal member, and the quantity of the contaminant removal member It is also possible to easily and flexibly cope with changes in the arrangement. Therefore, even when adjusting settings such as pressure loss and air cleaning capacity by changing the quantity and arrangement of contaminant removal members, the cleaning device will not interfere with the adjustment, and the type and concentration of contaminants, Alternatively, pressure loss and air cleaning ability can be easily adjusted according to changes in conditions such as wind speed. Further, even when the pollutant removing member is clogged, deteriorated over time due to the cleaning liquid, excessive dirt, or the like during the repeated cleaning process, the pollutant removing member can be easily replaced.

Furthermore, according to the invention described in claim 1, since the cleaning liquid is discharged from above toward the pollutant removing member, the pollutant removing member can be efficiently cleaned with a small amount of cleaning liquid, and the amount of drainage thereof. Can be minimized.

Further, according to the invention described in claim 1, contaminate the upright plate portion of the material removal member disposed substantially parallel to the flow direction of the air, over their upright plate portion, along each upright plate portion, washed Since each pipe is arranged, an increase in pressure loss can be suppressed as much as possible.

According to the second aspect of the present invention, a plurality of types of cleaning liquid storage portions having different mounting positions and quantities of cleaning tubes are prepared, and the cleaning tube can be attached to and detached from the cleaning liquid storage portion. The quantity and arrangement of the cleaning pipes can be easily adjusted according to the quantity and arrangement of the members. Further, since the cleaning tube can be detached, the cleaning device can be easily maintained.

According to the third aspect of the present invention, since the discharge amount of the cleaning liquid discharged from the cleaning pipe is increased toward the upstream side of the air flow path, the concentration of the contaminant is high and the surface of the contaminant removing member is The upstream side of the air flow path where the amount of accumulated oxidation products is large, the higher the cleaning ability of the cleaning device.
Therefore, the pollutant removing member can be efficiently cleaned according to the degree of performance deterioration, and the amount of cleaning liquid used and the amount of drainage can be reduced as a whole.

According to the fourth aspect of the present invention, since the cleaning tube is arranged between the ultraviolet irradiation means and the contaminant removing member, the cleaning liquid discharged from the cleaning tube is scattered in the direction of the ultraviolet irradiation means. Can be prevented as much as possible.

According to the fifth aspect of the present invention, since the water pressure of the cleaning liquid discharged from the cleaning liquid discharge port increases, the cleaning performance of the cleaning device can be increased and the cleaning range of each cleaning tube can be expanded. Can do.

According to the invention described in claim 6 , since the duct type hollow structure is installed in an inclined state so that the air inflow side is lowered, the pollutant removing member (bottom plate portion) installed on the bottom surface of the duct type hollow structure ) Can be efficiently washed, and the drainage can be easily guided to the air inflow side, preventing the drainage from staying in the duct-type hollow structure and the backflow from occurring. it can. In addition, since the cleaning pipe is tilted together with the duct type hollow structure, the cleaning liquid can be smoothly supplied from the cleaning liquid reservoir to the cleaning pipe. Further, when the cleaning liquid is sequentially supplied from the common water supply pipe to the plurality of cleaning liquid storage parts, similarly, the cleaning liquid can be smoothly supplied from the water supply pipe to each cleaning liquid storage part.
In addition, regarding the treatment of the washing waste water, the same effect as described above can be obtained by using a duct type hollow structure in which the ceiling surface (washing device) is horizontal and only the bottom surface is inclined downward toward the air inflow side. It is.

FIG. 1 is a schematic configuration diagram showing an embodiment of an air cleaning device according to the present invention.
As shown in FIGS. 1 and 2, the air cleaning device 1 includes a duct-type hollow structure 2 and a contaminant disposed inside the duct-type hollow structure 2 substantially in parallel with the air flow direction. The removing member 3 and a cleaning device 4 for cleaning the contaminant removing member 3 are roughly configured. In the present embodiment, a plurality of contaminant removing members 3 are arranged in a line along the air flow direction inside the duct type hollow structure 2, and the cleaning device 4 is disposed above each of the contaminant removing members 3. Is arranged.

  As shown in FIG. 1, the duct-type hollow structure 2 is a rectangular duct, and has a light-transmitting member 5 constituting the ceiling portion thereof and a substantially U-shaped channel structure constituting the bottom portion and both side wall portions. The member 6 is comprised. The light transmissive member 5 is made of, for example, borosilicate glass or the like, and can transmit sunlight or light (ultraviolet rays) of a light source. The light transmissive member 5 is detachably attached so as to cover a region other than the rainwater intake 12 of the cleaning device 4 described later in the upper opening of the flow path component 6. In the present embodiment, flange portions 9 and 14 are provided at the respective upper end positions of the flow path component member 6 and the cleaning device 4, and on the rectangular frame-shaped mounting portion formed by the flange portions 9 and 14, A light transmissive member 5 is installed.

  The contaminant removing member 3 includes a bottom plate portion 7 that can be placed on the upper surface of the bottom portion of the duct-type hollow structure 2, and one or more upright plate portions 8 that are erected on the upper surface of the bottom plate portion 7. In the present embodiment, as shown in FIG. 1 (d), as the pollutant removing member 3, a first pollutant removing member 3 a having four upright plate portions 8 and a first upright plate portion 8 having five upright plate portions 8 are used. 2 Contaminant removing member 3b is prepared.

  The surface of the pollutant removal member 3 is constituted by air cleaning means such as a photocatalyst or an adsorbent. In this embodiment, an air cleaning panel in which the air cleaning means is formed into a plate shape, or an air cleaning panel in which the air cleaning means is applied or baked on all or part of the plate-like substrate is mounted on both sides or one side of the support member. By doing so, the contaminant removal member 3 is comprised.

Examples of the photocatalyst constituting the air cleaning means include titanium oxide, metal oxide semiconductors (zinc oxide, tungsten oxide, cadmium oxide, indium oxide, silver oxide, manganese oxide, copper oxide, iron oxide, tin oxide, vanadium oxide). , Niobium oxide, zirconium oxide, etc.), metal sulfide semiconductors (cadmium sulfide, zinc sulfide, indium sulfide, lead sulfide, copper sulfide, molybdenum sulfide, tungsten sulfide, antimony sulfide, bismuth sulfide, etc.), strontium titanate, cadmium selenide , Potassium tantalate, and mixtures thereof are applicable. Further, a mixed material of a photocatalyst and cement, a catalyst in which hydroxyapatite or fluorinated apatite is bonded to the photocatalyst, and the like are also applicable.
On the other hand, examples of the adsorbent include inorganic adsorbents such as zeolite, silica gel, ion exchange materials, alumina adsorbents, metal complex adsorbents, and ceramics, and organic adsorbents such as activated carbon, ion exchange materials, and chelate resins. Adsorbent is applicable. The adsorbent includes those coated or impregnated with a gas reaction component for removing a specific gas (for example, a potassium hydroxide solution for removing carbon dioxide).

  As shown in FIG. 2, the cleaning device 4 discharges the cleaning liquid storage unit 10 capable of storing a predetermined amount of cleaning liquid (rain water) and the cleaning liquid in the cleaning liquid storage unit 10 from above toward the contaminant removing member 3. And a cleaning tube 11 to be used.

The cleaning liquid storage unit 10 is a rectangular box-shaped container having an open upper surface, and an upper opening thereof serves as a rainwater intake 12. As shown in FIGS. 1 (b) and 1 (c), the cleaning liquid reservoir 10 is installed on the upper end of the duct type hollow structure 2 (between the side walls of the flow path component 6). As shown, the installation position is set so that each cleaning pipe 11 is arranged at a position immediately above each upright plate portion 8 of the contaminant removing member 3.
As shown in FIG. 2, a pair of engagement pieces 13 are provided at both ends in the longitudinal direction at the peripheral edge of the rainwater intake 12 of the cleaning liquid reservoir 10, and light transmissivity is provided at both ends in the short direction. A flange portion 14 for mounting the member 5 is provided.
The engagement piece 13 is used for mounting the cleaning liquid reservoir 10 on the duct type hollow structure 2, and a stopper or the like in a state where the engagement pieces 13 are engaged with both side walls of the flow path component 6. The cleaning liquid storage part 10 is attached to the duct type hollow structure 2 by fixing by the above. For example, silicon packing or the like is inserted in a portion where the engagement piece 13 and the flow path component 6 abut on each other in order to improve mutual adhesion.

Also, among the side wall surfaces perpendicular to the air flow direction, a plurality of cleaning pipes 11 are attached to the lower end portion of one side wall surface so as to be arranged in a horizontal row in parallel with each other, and the lower end portion of the other side wall surface Are provided in a state in which a cleaning tube support 15 for supporting the tip of each cleaning tube 11 of the adjacent cleaning device 4 extends in the horizontal direction.
Each cleaning pipe 11 is provided with a plurality of cleaning liquid discharge ports, and rainwater is discharged from the discharge ports toward the upright plate portion 8 of the contaminant removing member 3.

  For example, as shown in FIG. 3A, a cleaning device 4 equipped with four cleaning tubes 11 is disposed above the first pollutant removing member 3a, and above the second pollutant removing member 3b. At the position, as shown in FIG. 3 (b), a cleaning device 4 equipped with five cleaning tubes 11 is arranged. Each washing tube 11 is arranged substantially horizontally along the upper end of the corresponding upright plate portion 8, and when it rains, it is drilled at the lower end position as shown in FIGS. Rainwater is discharged all at once from the respective cleaning liquid discharge ports provided toward the upright plate portion 8.

  The cleaning liquid reservoir 10 and the cleaning tube 11 described above can be formed of any of stainless steel, acrylic, vinyl chloride, and various plastics. The cleaning tube 11 is preferably configured to be detachable from the cleaning liquid storage unit 10, and is preferably configured to be disassembled into a plurality of parts so that the inside of the cleaning tube 11 can be cleaned, or configured to be removable.

When using the air purification apparatus 1 having the above configuration, first, the duct-type hollow structure 2 is installed along the path of contaminated air such as an air supply port or an exhaust port of a building.
In that case, as shown in FIG. 5, it is desirable to install the duct type hollow structure 2 in an inclined state so that the air inflow side is lowered. By doing so, it is possible to smoothly supply rainwater from the cleaning liquid reservoir 10 to the cleaning tube 11 and to efficiently clean the bottom plate portion 7 of the contaminant removing member 3. In this case, since the drainage flows toward the air inflow side, it is desirable to provide a drainage groove 18 communicating with the drainage pipe 17 on the bottom surface on the air inflow side. Also, the bottom surface of the drainage groove 18 is inclined so that the connecting portion with the drainage pipe 17 is at the lowest end, and a filter (drainage cleaning means) 19 is interposed in the drainage pipe 17 or a drainage storage tank ( It is desirable that the drainage collecting means) be connected.

  When the installation of the duct type hollow structure 2 is completed, as shown in FIG. 1 (d), the pollutant removing member 3 is arranged inside the installed duct type hollow structure 2 substantially in parallel with the direction in which the polluted air flows. To do. At that time, based on the required air cleaning capability and allowable pressure loss, the arrangement configuration of the pollutant removal member 3 (the number of the upright plate portions 8, the arrangement, the type of air cleaning means, etc.) is determined, According to the determination, the pollutant removing member 3 is arranged.

Thereafter, when the installation of the contaminant removing member 3 is completed, as shown in FIG. 1C, the cleaning is performed with the tip of the cleaning tube 11 facing the air inflow side above the contaminant removing member 3. The apparatus 4 is installed.
At that time, the attachment position and quantity of the cleaning pipe 11 are determined based on the quantity and arrangement of the upright plate part 8 of the contaminant removing member 3, and the cleaning liquid storage part 10 is determined based on the required discharge amount of the cleaning liquid. And the diameter of the cleaning liquid discharge port of the cleaning tube 11 are determined. When a plurality of contaminant removal members 3 are arranged along the air flow direction as in the present embodiment, the discharge amount of the cleaning liquid discharged from the cleaning tube 11 increases toward the upstream side of the air flow path. Thus, it is desirable to set the capacity of the cleaning liquid reservoir 10 and the diameter of the cleaning liquid discharge port of the cleaning pipe 11. By doing so, the cleaning capability by the cleaning device 4 becomes higher toward the upstream side of the air flow path where the concentration of contaminants is high and the amount of oxidation products accumulated on the surface of the contaminant removal member 3 is large.

  When the installation of the cleaning device 4 is completed, as shown in FIG. 1 (b), the light transmissive member 5 is mounted at a predetermined position on the upper end of the duct-type hollow structure 2 so as not to block the rainwater intake 12 of the cleaning device 4. To do. Specifically, light is transmitted through a packing made of silicon or the like on a rectangular frame-shaped mounting portion formed by the flange portion 9 at the upper end of the flow path component 6 and the flange portion 14 at the upper end of the cleaning device 4. The sex member 5 is placed and fixed with a dedicated clip or the like. Thereby, the installation of the air cleaning device 1 is completed. In this state, if polluted air is poured into the duct type hollow structure 2, various pollutants contained in the polluted air are removed from the pollutant removing member. 3 and the air can be purified.

Further, in the case of rain, as shown in FIGS. 4A and 4B, rainwater (cleaning liquid) flows into the rainwater intake 12 of the cleaning device 4, and the rainwater flows into each cleaning pipe 11. It is discharged from above toward the contaminant removing member 3 from the cleaning liquid discharge port. Thereby, nitrates, sulfates, dusts and the like attached to the surface of the contaminant removing member 3 are washed away by rainwater. This waste water can be used as a nutrient source for plants. For example, when the air cleaning device 1 is installed on the roof, it can also be used for roof greening, wall greening, and the like. .
Further, for example, when rainy weather continues and the amount of rainwater supplied exceeds the capacity of the cleaning liquid reservoir 10, excess rainwater overflows from the rainwater intake 12 and is discharged to the outside of the duct type hollow structure 2. It will be. For this reason, it is possible to prevent excessive rainwater from being supplied into the duct type hollow structure 2.

Further, when adjusting the settings such as the pressure loss and the air purifying capacity, the light is removed in the order opposite to that when the air purifying apparatus 1 is installed, as shown in FIGS. 1 (a) to 1 (d). The permeable member 5 and the cleaning device 4 are removed. Thereby, the quantity and arrangement of the pollutant removal member 3 can be freely changed, and the pressure loss and the air cleaning ability can be easily adjusted according to changes in conditions such as the type and concentration of the pollutant or the wind speed. be able to.
At this time, for example, if the quantity of the pollutant removing member 3 is increased, the contact area between the air and the air cleaning means increases, the pressure loss increases, the wind speed decreases, and the contact time between the air and the air cleaning means. Increase. On the other hand, when the quantity of the pollutant removing member 3 is reduced, the contact area between the air and the air cleaning means is reduced, and the pressure loss is reduced to increase the wind speed and the contact time between the air and the air cleaning means. . That is, the pressure loss and the air cleaning ability can be changed by increasing or decreasing the quantity of the contaminant removing member 3.
Further, even if the quantity of the pollutant removing member 3 is not changed, if the arrangement of the pollutant removing member 3 is changed, the pressure loss fluctuates, so that the air cleaning ability changes. Further, the air cleaning ability also changes by changing the type and density of the air cleaning means. Therefore, the pressure loss and the air cleaning capability can be adjusted by changing the quantity and arrangement of the contaminant removing member 3 and the setting of the air cleaning means.

  Further, when performing maintenance of the cleaning device 4, the cleaning device 4 may be removed in the same procedure. In this embodiment, since the cleaning tube 11 is configured to be removable, when the cleaning tube 11 is cleaned or replaced, only the cleaning tube 11 is removed while the cleaning device 4 is attached. May be.

As described above, according to the air cleaning device 1 of the present embodiment, since the contaminant removing member 3 can be cleaned while being installed in the duct type hollow structure 2, it is cleaned as compared with the conventional case. The work can be greatly reduced, and the pollutant removing member 3 can be appropriately cleaned even in places where cleaning has been difficult in the past, such as outside air intakes on the side of buildings.
Further, since the cleaning device 4 is installed in the duct-type hollow structure 2 in a detachable state, the cleaning device 4 does not hinder the installation or removal of the pollutant removing member 3, and the pollutant It is possible to easily and flexibly cope with changes in the number and arrangement of the removing members 3. Therefore, when adjusting the settings such as the pressure loss and the air cleaning capacity by changing the quantity and arrangement of the pollutant removing member 3, the cleaning device 4 does not interfere with the adjustment. Pressure loss and air cleaning ability can be easily adjusted according to changes in conditions such as concentration or wind speed. Further, even when the contaminant removing member 3 is aged or excessively soiled, the contaminant removing member 3 can be easily replaced.

Furthermore, according to the air cleaning device 1 of the present embodiment, since the cleaning liquid is discharged from above toward the contaminant removing member 3, the contaminant removing member 3 can be efficiently cleaned with a slight amount of cleaning liquid. The amount of drainage can be minimized.
In addition, since a plurality of types of cleaning liquid reservoirs 10 having different attachment positions and quantities of the cleaning pipes 11 are prepared and the cleaning pipes 11 can be attached to and detached from the cleaning liquid storage parts 10, Depending on the arrangement, the quantity and arrangement of the cleaning tubes 11 can be easily adjusted. Further, since the cleaning tube 11 can be removed, the cleaning device 4 can be easily maintained.
In particular, in this embodiment, since the rainwater intake 12 is provided in the cleaning liquid storage unit 10 and the rainwater taken from the rainwater intake 12 is used as the cleaning liquid, only natural energy is used without using extra energy. Thus, the contaminant removing member 3 can be cleaned.
Further, the upright plate portions 8 of the contaminant removing member 3 are arranged substantially parallel to the air flow direction, and the cleaning pipes 11 are arranged along the upright plate portions 8 above the upright plate portions 8. As a result, an increase in pressure loss can be minimized.

  Thus, according to the air cleaning device 1 of the present embodiment, since rainwater can be used as a cleaning liquid, the cleaning device 4 is detachable, has a low pressure loss, and does not use extra energy. Regardless of whether it is new or existing, such as the side or roof of the building, the air supply / exhaust opening connecting the underground space and the ground, the aquarium exhaust, the underground parking lot, the tunnel exhaust, etc. Therefore, various pollutants contained in the air passing through the air supply / exhaust ports can be efficiently removed.

In the present embodiment, the upper surface of the cleaning device 4 is substantially flush with the upper surface of the duct-type hollow structure 2, but the upper surface of the cleaning device 4 is increased in order to increase the capacity of the cleaning device 4. The height may be higher than the upper surface of the duct type hollow structure 2.
Further, in this embodiment, the cleaning device 4 is supported by the engagement pieces 13 provided at both ends of the cleaning liquid reservoir 10, but in addition to this, for example, as shown in FIG. 2, a support plate 21 for placing the bottom of the cleaning liquid reservoir 10 or a support plate 22 inserted into the side slit 23 of the cleaning liquid reservoir 10 as shown in FIG. It is also possible to adopt a configuration in which the cleaning device 4 is supported by the cooperation of 21 and 22 and the engagement piece 13.
In the present embodiment, the cleaning pipe support 15 is provided in the cleaning liquid reservoir 10, but instead the cleaning pipe support 24 is provided inside the duct-type hollow structure 2, for example, as shown in FIG. It is also possible to adopt a configuration in which
The washing tube support 24 and the support plates 21 and 22 can also be used as means for maintaining the duct shape.

  Moreover, in this embodiment, although the contaminant removal member 3 by which the several standing board part 8 was standingly arranged on the upper surface of the baseplate part 7 was illustrated, this invention is not limited to this, For example, FIG. As shown, a contaminant removing member 27 in which a plurality of upright plate portions 25 are connected to each other by a connecting member can be used. In this case, as the connecting member, as shown in FIGS. 9A and 9B, a connecting member 26a for connecting the upright plate portions 25 at the upper end position may be used, or FIG. ) And a connection member 26b connected at the lower end position as shown in FIG. 9D. In any case, by using a plurality of connecting members, the upright plate portions 25 can be supported in a stable state. The connecting members 26a and 26b can be formed of an inorganic material such as ceramics. Here, an upright plate portion 25 is inserted between a pair of parallel support pieces 26c and 26c provided upright on one surface of a band plate-like base frame, and the upright plate is formed by the support pieces 26c and 26c. Although it is set as the structure which supports the part 25 from the both sides, you may support the standing board part 25 by the method of other than this. Further, in the case of such a configuration, the flat contaminant removing member 28 can be laid on the floor surface of the duct type hollow structure 2.

  In the present embodiment, the ceiling portion of the duct type hollow structure 2 is configured by the light transmissive member 5 so that the pollutant removing member 3 inside the duct is irradiated with sunlight. When used in a place where sunlight does not reach or when used at night, as shown in FIGS. 10 (a) and 10 (b), ultraviolet rays such as black light are applied to the ceiling of the duct type hollow structure 2. It is also possible to provide the irradiation means 29. In this case, it is desirable to install the ultraviolet irradiation means 29 at a position above the cleaning pipe 11 so that the cleaning pipe 11 is disposed between the ultraviolet irradiation means 29 and the contaminant removing member 3.

  In the present embodiment, the upright plate portion 8 of the contaminant removing member 3 is formed in a flat plate shape. However, the upright plate can be efficiently cleaned with a small amount of cleaning liquid. It is also possible to form the top of the portion 8 in a chevron shape. Furthermore, a photocatalyst is applied so that the surface of the upper end portion of the upright plate portion 8 (such as an air cleaning panel or a fixing jig for fixing this to the support member) becomes hydrophilic, or the surface is made hydrophilic. The cleaning liquid discharged from the cleaning tube 11 can be spread over a wide range, and the cleaning efficiency of the surface of the contaminant removing member 3 can be further improved. In particular, when a photocatalyst is applied, adhesion of dirt and the like can be reduced due to hydrophilicity and the photocatalytic effect, and thus the above-described cleaning effect can be maintained for a long period of time.

  In the present embodiment, the rainwater intake 12 is provided in the washing liquid reservoir 10 and rainwater (cleaning liquid) is directly taken in from the rainwater intake 12, but for example, as shown in FIG. It is also possible to adopt a configuration in which the cleaning liquid is introduced into the portion 10A. In the example of FIG. 11, a pair of water supply passages 30a and 30b are disposed on both sides of the upper end of the duct-type hollow structure 2, and a cylindrical cleaning liquid reservoir 10A is installed between the water supply passages 30a and 30b. ing. As the water supply channels 30a and 30b, a channel having a substantially U-shaped cross-section with an open upper surface is used, and rainwater can be taken in from the upper opening. Further, a dam plate 31 having a predetermined height is interposed in the vicinity (downstream side) of the connecting port of the cleaning liquid storage unit 10A, and only rainwater overflowing from the dam plate 31 flows downstream. ing. Furthermore, as shown in FIG. 12, the duct type hollow structure 2 is provided with a support plate 32 that supports the tip of each cleaning tube 11 and an arc-shaped protrusion 33 that supports the cleaning liquid reservoir 10A. On the side wall surface of the duct type hollow structure 2, an opening for communicating the cleaning liquid reservoir 10 and the water supply channels 30 a and 30 b is formed. Moreover, as shown in FIG. 11, the ceiling part of the duct type | mold hollow structure 2 is comprised by the single light transmissive member 5A. Even with the air cleaning device having such a configuration, it is possible to clean the pollutant removing member 3 while it is installed in the duct type hollow structure 2 in the same manner as the air cleaning device 1 described above. Thus, the cleaning work can be greatly reduced.

  In the air cleaning device, the water supply passages 30a and 30b that can take in rainwater are used as the flow path for supplying the cleaning liquid to the cleaning liquid reservoir 10A. When supplying pressurized cleaning liquid to the cleaning liquid storage section 10A, such as when supplying the cleaning liquid storage section 10 from a water storage tank installed to the cleaning liquid storage section 10 or when supplying tap water directly to the cleaning liquid storage section 10A, FIG. As shown, it is also possible to use tubular water supply channels 35a, 35b. In this case, the supply of the pressurized cleaning liquid increases the water pressure of the cleaning liquid discharged from the cleaning liquid discharge port, so that the cleaning capability of the cleaning device 4 can be increased and each cleaning pipe 11 can be improved. The cleaning range can be expanded.

  Moreover, in this embodiment, although illustrated about the case where the duct type | mold hollow structure 2 of the substantially same shape as the duct which comprises an air supply / exhaust port was installed, this invention is not limited to this, For example, FIG. As shown in FIG. 4, when the air purification apparatus according to the present invention is installed in a square duct 36 having a large cross section, the cross-sectional area is the same as that of the square duct 36 and the dimension in the width direction is large. It is also possible to use a (small) duct type hollow structure 2A. When a duct-type hollow structure having the same cross-sectional shape as that of the square duct 36 is used, there is a concern that the cleaning effect of the cleaning device 4 may be reduced due to an increase in the height of the upright plate portion 8 of the contaminant removing member 3. However, if the duct-type hollow structure 2A is used, the number of the upright plate portions 8 having a small height can be used to increase the number of the plates, so that the cleaning effect is reduced while maintaining the air cleaning capability. Can be prevented.

  For example, as shown in FIG. 15, when it is necessary to further enhance the cleaning effect, a duct type hollow structure 2B having the same height dimension as the duct 37 and a large dimension in the width direction may be used. Good. In this case, since the number of upright plate portions 8 arranged in the width direction or the number of contaminant removing members 3 can be increased, the air cleaning capability can be enhanced while maintaining the cleaning capability.

It is a perspective view which shows one Embodiment of the air purification apparatus which concerns on this invention. It is a perspective view which shows one Embodiment of the washing | cleaning apparatus which concerns on this invention. It is the model which shows the example of installation of the washing | cleaning apparatus, and represents the state at the time of fine weather. It is a schematic diagram which shows the example of installation of a washing | cleaning apparatus, and represents the state at the time of rainy weather. It is a perspective view which shows the example of installation of the air purifying apparatus of FIG. It is a perspective view which shows the modification of the support structure of a washing | cleaning apparatus. It is a perspective view which shows the modification of the support structure of a washing | cleaning apparatus. It is a perspective view which shows the modification of a washing pipe support part. It is a perspective view which shows the modification of a contaminant removal member. It is a perspective view which shows the example of attachment of an ultraviolet irradiation means. It is a perspective view which shows the modification of the supply structure of a washing | cleaning liquid. It is a perspective view which shows the attachment structure of the washing | cleaning apparatus of FIG. It is a perspective view which shows the modification of the supply structure of a washing | cleaning liquid. It is a perspective view which shows the other example of installation of the air purifying apparatus which concerns on this invention. It is a perspective view which shows the other example of installation of the air purifying apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air purification apparatus 2 Duct type hollow structure 3 Contaminant removal member 4 Cleaning apparatus 5 Light transmissive member 6 Flow path component 7 Bottom plate part 8 Standing plate part 10 Cleaning liquid storage part 11 Cleaning pipe

Claims (6)

A duct-type hollow structure having an air flow path;
A pollutant removing member installed in a detachable state inside the duct-type hollow structure and having a surface constituted by a photocatalyst and / or an adsorbent;
It is installed in a detachable state on the upper part of the duct type hollow structure, and includes a cleaning device for cleaning the contaminant removing member,
The cleaning device includes a cleaning pipe that discharges the cleaning liquid from above toward the contaminant removing member, and a cleaning liquid reservoir that supplies the cleaning liquid to the cleaning pipe.
The pollutant removing member has one or a plurality of upright plate portions that can be erected in the duct-type hollow structure, and the upright plate portions are arranged substantially parallel to the air flow direction, and the upright plate portions are arranged upright. The air cleaning device , wherein the cleaning pipe is disposed at an upper position of the plate portion along the upper end of each upright plate portion . As the cleaning liquid storage unit, claims the mounting position and the number of the washing tube is the cleaning liquid storage unit of the different types available, the washing tube to their cleaning liquid storage unit is characterized by being configured so as to be detachable 2. The air cleaning apparatus according to 1. The air cleaning device according to claim 1 or 2, wherein the discharge amount of the cleaning liquid discharged from the cleaning pipe is set so as to increase toward the upstream side of the air flow path . Ultraviolet irradiation means for irradiating the pollutant removing member with ultraviolet rays is disposed on the ceiling of the duct type hollow structure, and the cleaning tube is disposed between the ultraviolet irradiation means and the pollutant removing member. The air purifier according to any one of claims 1 to 3, wherein the air purifier is provided. The air cleaning apparatus according to any one of claims 1 to 4, wherein the pressurized cleaning liquid is supplied to the cleaning liquid storage section . The cleaning device is arranged in a state where the tip of the cleaning pipe faces the air inflow side of the duct type hollow structure,
The air purification apparatus according to any one of claims 1 to 5, wherein the duct type hollow structure is installed in an inclined state so that an air inflow side is lowered .

Images