JP2010025467A - Air cleaner and air cleaning method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air cleaner capable of easily recovering a cleaning function of a contaminated matter removal member by a means other than cleaning and obtaining high contaminated matter removal performance as a whole device. <P>SOLUTION: This air cleaner 1 is equipped with a duct type hollow structure 2 having an air flow passage, and the contaminant removal member 3 detachably disposed in the duct type hollow structure 2 substantially parallel with the distribution direction of air. The contaminant removal means 3 includes a plurality of blocks 9 disposed substantially in parallel with wall faces 2a, 2b of the duct type hollow structure 2. Each block 9 includes an aggregate in which two or more cleaning members 10 having cleaning functions on both faces are superimposed and closely adhered with each other. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an air cleaning apparatus that cleans air by removing pollutants from polluted air and an air cleaning method using the same.

  In recent years, there has been a growing interest in healthy and comfortable living and office environments. For example, in a building, there is a technology that removes pollutants contained in air that is taken into the building or air that is discharged outside the building by using a filter made of an adsorbent such as activated carbon, a photocatalyst, or a compounded material thereof. Proposed.

However, when a filter is used for removing contaminants, pressure loss increases, and installation of a dedicated fan or the like is necessary. For example, Patent Documents 1 to 3 disclose techniques for avoiding this problem. Has proposed a device (hereinafter referred to as a parallel plate device) in which a pressure loss is reduced by arranging a flat plate made of a photocatalyst or a mixture of a photocatalyst and an adsorbent in parallel with the flow direction of contaminated air. ing.
In this parallel plate device, when an adsorbent is used, the adsorption site decreases as the adsorption progresses, and eventually breaks through.Before this situation, decompression regeneration, thermal desorption regeneration, chemical regeneration, It is necessary to regenerate by a method such as solvent regeneration, substitution regeneration, oxidative decomposition regeneration, or replacement with a new one. When using a photocatalyst, all organic substances can be oxidatively decomposed and finally decomposed into water and carbon dioxide. On the other hand, substances containing nitrogen and sulfur, such as nitrogen oxide (NOx), ammonia, and sulfur oxide (SOx), are oxidized to non-volatile nitrate and sulfate ions by photocatalytic reaction and removed from the air. However, since these products accumulate on the photocatalyst surface and cause performance deterioration (catalyst poisoning), it is necessary to periodically remove these products.

  Therefore, in view of such circumstances, the present inventors have a hollow structure main body provided with an opening / closing portion on the wall surface, and are detachable in a state substantially parallel to the air flow direction inside the hollow structure main body. An air cleaning device having a pollutant removing member arranged is proposed, and a technique related to this is disclosed in Patent Document 4. According to this air cleaning device, the pollutant removing member can be freely removed, so that the pollutant removing member can be easily replaced and cleaned at an appropriate time.

However, when NOx or SOx is oxidized and removed by the photocatalyst, the catalyst performance is often deteriorated due to the catalyst poisoning in a relatively short period of time, and the frequency of exchanging and cleaning the pollutant removing member is increased. Even if it is an easy task, it takes some time and effort.
Therefore, the present inventors will further research and respond easily and flexibly to changes in the number and arrangement of contaminant removal members while having the function of cleaning with the contaminant removal members installed. An air cleaning device having a cleaning function that can perform the above-mentioned is developed, and a technique related to this is described in Patent Document 5.

  In such an air purifier, since not only tap water but also rain water can be used as a cleaning liquid, it is economical and can be installed outdoors where water supply facilities such as tap water are not provided. Have advantages. However, some places where it is necessary to clean contaminated air cannot use tap water or rain water, and there are places where it is difficult to install the air cleaning device. Further, when rainwater is used as a cleaning liquid, there is a risk of accelerating material deterioration due to excessive cleaning due to long-term rainfall. For this reason, when rainwater is used, it is necessary to introduce a system that adjusts the supply amount and supply timing of rainwater, which may result in a complicated apparatus configuration. Some adsorbents are not suitable for cleaning. For this reason, there is a need for a method that can easily restore the function and extend the performance of the contaminant removing member by means other than cleaning.

  Further, in the above air cleaning device, the contaminant concentration in the air to be cleaned is higher on the inlet side (upstream side) than on the outlet side (downstream side of the flow of contaminated air). Both the amount and the product accumulation amount on the photocatalyst surface are larger on the inlet side. For this reason, when the cleaning process is performed on the inlet side, excessive cleaning is performed on the outlet side with a small accumulation amount, and the life of the material is shortened. In addition, the running cost for cleaning increases more than necessary.

  In Patent Document 6, a catalyst layer is obtained by gradually increasing the intensity of ultraviolet light applied to the photocatalyst layer from the entrance side to the exit side of the parallel plate device, or by gradually increasing the amount of the alkali component added to the photocatalyst layer. A method for averaging the amount of pollutant removal across the entire area is described. As a result, the running cost for the cleaning process can be reduced and the life of the photocatalytic material can be extended.

  However, when using sunlight, it is difficult to gradually increase the ultraviolet intensity. In addition, in the case of increasing the ultraviolet intensity and increasing the alkali component, since the outlet side is adjusted to be the highest, the ultraviolet intensity on the inlet side may be insufficient as a result. . That is, according to the above method, the removal amount of pollutants can be averaged over the entire area of the catalyst, but compared with the case where the highest ultraviolet intensity or alkali component amount set on the outlet side is applied to the entire apparatus. It is thought that the amount of pollutant removal as a whole will be low. In particular, it is presumed that such a tendency is further strengthened under the situation where products such as nitrate ions and sulfate ions accumulate over time and the activation sites on the catalyst surface are reduced.

JP 2001-12095 A JP 2001-137665 A Japanese Patent No. 3484208 JP 2007-209594 A Description of Japanese Patent Application No. 2007-098192 Japanese Patent No. 3796894

  The present invention has been made in view of such circumstances, and the purification function of the contaminant removing member can be easily recovered by means other than cleaning, and problems such as material deterioration due to excessive cleaning and an increase in running cost can be solved. It is an object of the present invention to provide an air cleaning device and an air cleaning method that can be avoided and can obtain high contaminant removal performance as a whole device.

  An air cleaning device according to the present invention as set forth in claim 1 is a duct-type hollow structure having an air flow path, and is detachably attached to the inside of the duct-type hollow structure substantially in parallel with the air flow direction. An air cleaning device comprising a contaminant removing member arranged in a state, wherein the contaminant removing member has a plurality of blocks arranged substantially parallel to the wall surface of the duct type hollow structure, The block is formed of an assembly in which at least two purification members having a purification function on both sides are overlapped so that the overlapped surface does not come into contact with air.

Here, the cross section of the duct type hollow structure may have any shape such as a rectangle such as a rectangle or a square, a trapezoid, a polygon, a circle or an ellipse. Further, the size of each block of the contaminant removing member may be the same or different from each other.
In the case of the vertical arrangement, for example, a support member that supports the contaminant removing member from below, a contamination member, or the like, can be used as a method of “arranging the contaminant removing member substantially in parallel with the air flow direction and detachable”. There is a method using a support member that suspends and supports the substance removing member from above. On the other hand, in the case of the horizontal arrangement, for example, there is a method of using a support member that supports the contaminant removing member from the lateral direction.
Specifically, as a support member for supporting the contaminant removal member from below, for example, a support base having a structure in which the block is inserted and supported in a recess having an open upper surface, or a pair of vertically installed vertical stands Examples thereof include a support base having a structure in which the block is inserted and supported between the protruding pieces. Each of these support bases is configured to be able to support the block in an upright state, and the bottom surface of each of the support bases can be installed substantially horizontally in the duct type hollow structure. It is formed in the same shape (plane or curved surface) as the bottom surface of the hollow structure. These support bases may have a function of sliding in the horizontal direction and a stop function of restricting the movement thereof. In addition, if these support bases are attached to the side wall surface of the duct type hollow structure and the direction is rotated by 90 degrees, the support base is used as a support member for supporting the contaminant removing member from the lateral direction. It is also possible.
On the other hand, as a support member that suspends and supports the contaminant removal member from above, for example, a hanging tool with a hook can be used. Specifically, the suspension is attached to the upper end of the block, and the hook is hooked on a transfer member installed on the ceiling of the duct-type hollow structure so that the block is suspended from above. Things. In addition, when the cross-sectional shape of the said duct type hollow structure is circular or an ellipse, it is desirable to install a base board etc. so that the bottom part of the said duct type hollow structure may become horizontal.

Examples of the purification function include a means for converting a pollutant into a harmless substance and a means for physically or chemically adsorbing and removing. For example, a photocatalyst, an adsorbent, a blending material of a photocatalyst and an adsorbent, and the like can be given. The purification member itself may be formed of an adsorbent, or a photocatalyst or an adsorbent may be fixed to a part or the whole of the purification member by coating or baking.
The purifying members having the purifying function on both sides may not be a flat plate as long as a plurality of purifying members can be stacked and brought into close contact with each other. For example, a pleated structure, a corrugated structure, a mountain-valley structure, an uneven structure, or the like may be used.

  The air cleaning method according to the present invention described in claim 2 is an air cleaning method for purifying the contaminated air by circulating the contaminated air through the duct type hollow structure of the air cleaning device according to claim 1. When the deterioration of the function of the pollutant removal member is detected periodically or based on the measurement result of the type / concentration of the component of the polluted air, the purification member is rearranged to change the arrangement or direction of each. By switching the use surface of the purification member that has been in contact with the contaminated air to the unused surface of the purification member that has not yet been in contact with the contaminated air, the purification function of the contaminant removal member is recovered. It is what.

Here, as a method of measuring “type / concentration of components of contaminated air”, for example, an observation port is provided on the wall surface on the outlet side (the ceiling surface, the side surface, or the bottom surface) of the air cleaning device, For example, there is a method of directly measuring the type and concentration of the contaminated air component by inserting a tube connected to a suction pump built in the pollutant measuring device from the observation port. In addition, it is possible to measure the concentration of a wide range of substances, though the accuracy is reduced by inserting various detector tubes from the observation port. In addition, when measuring with high accuracy, it is possible to analyze with a precision instrument by sampling using a pump. The observation port can be sealed with a silicon stopper when not in use.
In addition, as a method of rearranging the purification members, for example, a method of rearranging the purification members from the opening / closing portion by providing an opening / closing portion on a wall surface (either a ceiling surface, a side surface, or a bottom surface) of the duct type hollow structure. Is mentioned. As long as the opening / closing part can change the arrangement or orientation of the purification member in a state where the duct type hollow structure is installed, for example, the opening / closing part can be opened and closed with a rotary or sliding door member. Further, it may be of any form such as one that opens and closes the opening with a lid member.

  The invention according to claim 3 is the air cleaning method according to claim 2, wherein the purification member disposed at one end of the block is overlapped with the use surfaces of the purification member disposed at the other end, The purification members are rearranged in the same block so that the contaminated air contact surface of the block becomes the unused surface.

  According to a fourth aspect of the present invention, in the air cleaning method according to the second aspect, the purification member arranged at one end of the block is moved in parallel to the other end side of the adjacent block, so that Each of the blocks is arranged so that the contaminated air contact surface of each block becomes the above unused surface by superimposing the disposed purification members and the use surfaces of the purification members disposed at the other ends of the adjacent blocks. The purification members are rearranged.

  The invention according to claim 5 is the air purification method according to claim 4, wherein when the blocks of the contaminant removing member are arranged at equal intervals, the purification member arranged at one end of each block, The purifying members of each block are rearranged together by simultaneously translating the same distance to the other end side of adjacent blocks.

  According to the first aspect of the present invention, a pollutant removing member is provided by an assembly in which at least two plate-shaped purification members having a purification function on both sides are superposed so that the superposed surface does not come into contact with air. Therefore, only the outer surface of the purification member arranged at both ends of the block becomes a surface that contacts the contaminated air (contaminated air contact surface), and the other surfaces (in which the purification members overlap) Side) is a surface that does not come into contact with contaminated air. For this reason, if the purification members are rearranged to change their arrangement or orientation, the surface that has been in contact with the contaminated air (the used surface) will be replaced with the surface that has not yet been in contact with the contaminated air (the unused surface). ) And the purification function of the pollutant removing member can be recovered easily and quickly.

  In addition, since cleaning water is not required to recover the purification function, the air cleaning device can be installed even in places where it is difficult to supply tap water or rainwater, and material deterioration and equipment configuration due to excessive cleaning There is little concern about complications, and even an adsorbent that is not suitable for cleaning can be used as a contaminant removing member.

  According to the second aspect of the present invention, when the deterioration of the function of the pollutant removing member is detected periodically or based on the measurement result of the type / concentration of the component of the polluted air, the purifying members are rearranged, respectively. By changing the arrangement or orientation of the purification member, the use surface of the purification member that has been in contact with the contaminated air is switched to the unused surface of the purification member that has not yet been in contact with the contaminated air. Therefore, the contaminant removal performance of the air cleaning device can be maintained in a stable state over a long period of time.

Furthermore, since the purification function of the contaminant removing member is restored by the above method, the following advantages can be obtained.
(1) Since it becomes a simple operation | work which rearranges the near purification member, a purification function can be recovered rapidly.
(2) Since there is no need to put in and out the purification member (supply of a new purification member and discharge of a used purification member) until there is no unused surface, labor saving and time reduction of the entire work can be achieved.
(3) By rearranging the purification members, the function of the entire apparatus can be restored, and the purification member can be moved in units of one sheet. It is possible to flexibly cope with partial function recovery such as function recovery. Therefore, even if the pollutant removal amount of the pollutant removal member is not averaged from the inlet side to the outlet side (that is, without changing the pollutant removal capacity depending on the pollutant concentration), material deterioration and running due to overcleaning Problems such as an increase in cost can be avoided, and the entire apparatus can exhibit high contaminant removal performance.

  According to the invention described in claim 3, since the purification members are rearranged in the same block, the use surface and the unused surface of the block are switched, so that the movement amount of each purification member is small, For example, when the function of only a specific block such as a function-reduced block is restored, the purification members can be rearranged efficiently.

  According to invention of Claim 4, the purification | cleaning member arrange | positioned at the end of a block was moved to the other end of an adjacent block, and it was made to switch the use surface and unused surface of each block. Therefore, similarly to the invention described in claim 3, the movement amount of each purification member is small, and particularly when the functions of a plurality of blocks are recovered simultaneously, the purification members can be rearranged efficiently.

  According to the fifth aspect of the present invention, a plurality of purification members can be rearranged at the same time, and the purification function of the contaminant removal member can be instantaneously restored.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic view showing an embodiment of an air cleaning device according to the present invention.
The air cleaning device 1 is roughly configured by a duct type hollow structure 2 having an air flow path and a contaminant removing member 3 disposed inside the duct type hollow structure 2. The pollutant removal member 3 is disposed substantially in parallel with the air flow direction in order to keep the pressure loss low.

  As shown in FIG. 1, the duct-type hollow structure 2 is formed in a rectangular duct shape, and has a substantially U-shaped flow path component member 5 and a ceiling covering the upper opening of the flow channel component member 5. The plate 4 is constituted. When using a photocatalyst as a purification function, the top plate 4 is made of a light-transmitting member such as quartz or borosilicate glass so that sunlight can be used as a light source, and can transmit sunlight. Further, as a light source for the photocatalyst, the duct type hollow structure 2 may be provided with ultraviolet irradiation means such as an ultraviolet lamp, a black light, and an LED. In this case, the top plate 4 does not need to be light transmissive, A light transmissive member is used in combination with sunlight. The top plate 4 is attached to the flow path component member 5 in a detachable state by clip fastening, screw fastening, knurled screw fastening, or the like. By removing the top plate 4, the contaminant removing member 3 can be rearranged freely. It can be taken in and out. In the present embodiment, the ceiling plate-shaped ceiling span portion 6 laid between the side walls 2a and 2b of the flow path component 5 and the flange portions 7 respectively formed at the upper end positions of the side walls 2a and 2b A placement portion for placing the plate 4 is configured. The ceiling passing portion 6 is provided with an observation port (not shown) for inserting a sampling tube in a portion that does not overlap the top plate 4 and is closed with a silicon stopper or the like when not used.

  The contaminant removing member 3 includes a base plate 8 placed on the bottom surface 2c of the duct type hollow structure 2 and a plurality of blocks (standing wall portions) 9 erected on the upper surface of the base plate 8. Each block 9 is composed of an assembly in which a predetermined number (at least two or more) of purification members 10 are superposed so that the superposed surface does not come into contact with air. Each unity is maintained.

  The purification member 10 is a plate-like member having a purification function on both surfaces, for example, a photocatalyst, an adsorbent, or the like formed on a plate-shaped base material as a whole or a part of a member formed by molding a photocatalyst, an adsorbent, or the like. It is comprised by the member etc. which adhered by application | coating or baking. The dimension in the thickness direction of each purification member 10 is determined by the dimension in the thickness direction of each block 9 of the contaminant removing member 3 and the number of purification members 10 constituting each block 9. Therefore, if the dimension of the block 9 in the thickness direction is determined, the combination of the number of the purification members 10 and the dimension of the purification member 10 in the thickness direction can be freely changed within the range as shown in FIG. The purifying member 10 has a purifying function on both sides thereof, but the purifying function is similarly given to the peripheral portions (upper and both sides in the figure) between the both sides to remove the contaminants. You may make it use for. Further, in the case where the purification function is not given to the peripheral portion of the purification member 10, in order to prevent the contaminated air from entering the gap between the purification members (unused surface side) from the peripheral portion, FIG. As shown, a U-shaped covering member 11 may be attached.

  Examples of the photocatalyst used for the purification member 10 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, and oxidation. Niobium, 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, tantalum Potassium acid, a mixture thereof, and the like 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. Moreover, the material etc. with which the said photocatalyst was carry | supported by the board | substrate which consists of ceramics, such as a high temperature baking type | mold, a low temperature drying type | mold, and coating and applying, etc. are also contained. As a light source for the photocatalyst, an ultraviolet irradiation means such as an ultraviolet lamp, a black light, and an LED may be provided inside the duct-type hollow structure 2, or the outside from the outside through a top plate 4 made of a light transmissive member. You may make it irradiate with an ultraviolet-ray by ultraviolet irradiation means, such as light, a ultraviolet lamp, a black light, LED.

  On the other hand, the adsorbent may be any material as long as it has at least an adsorption function. For example, the adsorbent may have a catalytic function such as redox. Examples of materials having such an adsorption function include zeolite, silica gel, zirconia, ion exchange materials, alumina-based adsorbents, metal complex-based adsorbents, inorganic adsorbents such as ceramics, activated carbon, ion-exchange materials, and chelate. Organic adsorbents such as resins are 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).

  The coupling member is a member for integrally holding an assembly of the purification members 10 constituting one block of the contaminant removing member 3. As this coupling member, for example, as shown in FIGS. 4A to 4C, as shown in FIG. 4D, the coupling members 12, 13, and 14 that sandwich and hold the plurality of purification members 10, Examples thereof include a coupling member 15 that is attracted and fixed by a magnetic force. In the example of FIGS. 4A to 4C, the coupling members 12, 13, and 14 are formed in a substantially U shape, and are attached to the upper part or the side part of the aggregated purification member 10. In the example of FIG. 4 (b), the coupling member 13 is fastened with screws 13a, and in the example of FIG. 4 (c), the parallel pieces 14a and 14b of the substantially U-shaped coupling member 14 are respectively located on the inside. It is configured to be bent and fastened and fixed by its elastic force (biasing force). In the example of FIG. 4D, the purification members 10 are attracted and fixed by the magnetic force of the coupling member 15 made of a magnetic material attached to the upper part of each purification member 10. In addition, the said coupling members 12, 13, 14, and 15 can eliminate the influence of a photocatalytic reaction by producing with inorganic materials, such as stainless steel and ceramics.

  The support member is a member for supporting the aggregate of purification members 10 (each block 9 of the pollutant removal member 3) held together by the coupling member in a standing state at a preset position, It is a member which determines the arrangement configuration of the purification member 10 to be described later. As this support member, as shown in FIGS. 5A and 5B, the support member is installed on the bottom surface 2c of the duct type hollow structure 2 and supports the block 9 of the contaminant removing member 3 from below. 16 and 17 and a support member 18 that suspends and supports the block 9 of the contaminant removing member 3 from above, as shown in FIG.

  The support member 16 shown in FIG. 5A is constituted by a support base on which irregularities are alternately formed, and has a structure in which the block 9 is inserted and supported in the recess 16a. The support member 17 in FIG. 5B is configured by a support base in which a plurality of sets of projecting pieces 17a and 17b are erected, and the block 9 is inserted and supported between the pair of projecting pieces 17a and 17b. It has become. These support bases may have a function of sliding in the horizontal direction and a stop function of restricting the movement thereof.

  The support member 18 shown in FIG. 5 (c) is constituted by a hanging tool with a hook. The attachment portion 18a is attached to the upper end portion of the block 9, and the hook 18b is installed on the ceiling portion of the duct-type hollow structure 2. The block 9 is suspended and supported from above by being hooked on the transfer member 27 (see FIG. 11). When the block 9 is suspended and supported in this way, the lower end portion of each purification member 10 may be in contact with the bottom surface 2c of the duct type hollow structure 2, and a wheel is attached to the lower end portion of the purification member 10. Then, it may be possible to move along the track laid below.

  In addition to the function of supporting the block 9, these support members 16, 17, and 18 also have a function of maintaining the integrity of the block 9. It is also possible to omit the connecting members 12, 13, 14, 15. On the other hand, when the function of maintaining the integrity of the block 9 is insufficient and a gap is generated between the purification members 10 or when it is desired to reduce the contact of contaminated air to unused surfaces as much as possible, the coupling members 12 and 13 are used. , 14, 15 are preferably used together.

  For example, as shown in FIG. 1, the purification member 10 is arranged from a block 9 a (referred to as a first block) composed of an assembly of two purification members 10 and an assembly of three purification members 10. A plurality of blocks 9b (referred to as second blocks) are prepared, and the ducts 9a and 9b are substantially parallel to the side wall surfaces 2a and 2b of the duct type hollow structure 2, respectively. There is a method of arranging them regularly in the width direction and the length direction (air flow direction). In the example of FIG. 1, in the width direction of the duct-type hollow structure 2, the blocks are arranged at substantially equal intervals in the order of the first block 9a, the second block 9b, the second block 9b, and the first block 9a. The same type of blocks are arranged in a line in the length direction of the duct type hollow structure 2. The first block 9 a is arranged so that one surface thereof is in close contact with the side wall surface of the duct type hollow structure 2.

  In the example of FIG. 1, the sizes and intervals of the blocks 9 arranged in the width direction of the duct type hollow structure 2 are the same, but may be different as shown in FIG. 6, for example. In the example of FIG. 1, the blocks 9 are aligned in the width direction and the length direction of the duct type hollow structure 2. However, as shown in FIG. 6, the blocks 9 are shifted in the length direction or the width direction. Alternatively, the number of blocks arranged in the width direction of the duct type hollow structure 2 can be changed as appropriate. Since the contaminants are purified by contacting the block, shifting the blocks rather than aligning the blocks in the length direction may increase the contact frequency of the contaminants and improve the purification function. In the example of FIG. 1, an arrangement of blocks arranged in the width direction of the duct type hollow structure 2 (an arrangement in which the first block 9a, the second block 9b, the second block 9b, and the first block 9a are arranged at equal intervals. ) Is the basic arrangement, and the same arrangement is repeatedly arranged in the length direction of the duct-type hollow structure 2, but the arrangement arrangement in which a different arrangement appears in the length direction of the duct-type hollow structure 2 Is also possible. For example, a plurality of blocks may be arranged in a staggered manner in order to increase the contact frequency of contaminants and improve the purification function. Further, as shown in FIG. 6, a basic array (blocks 9c, 9d, 9e, 9f, 9g) and an array (blocks 9g, 9f, 9e, 9d, 9c) obtained by inverting this by 180 ° C. appear alternately. An arrangement configuration is also possible.

  The thickness of the block 9 and the interval between the blocks 9 are set in consideration of the relationship between the surface wind speed, the pressure loss, and the necessary purification performance. When a photocatalyst is used, the blocking of ultraviolet rays is also taken into consideration. As described above, the intervals of the blocks 9 are not necessarily the same. For example, the blocks 9 are intentionally shifted in the width direction or the length direction of the duct-type hollow structure 2 so as to block the blocks 9. The frequency of contact with the block surface can be increased by reducing the proportion of air passing between them or generating turbulence.

  Here, the role of the pollutant removing member 3 is as follows: 1) a support for holding a photocatalyst, an adsorbent and the like, and 2) a resistance for controlling the air flow rate (changing the quantity and arrangement of the blocks 9). 3) Control the flow of air (separate effect) or cause turbulent flow to contact the photocatalyst or adsorbent with the contact area and amount of air. And increasing the contact frequency. Considering the above 2) and 3), the block 9 needs a certain thickness (several millimeters to several centimeters), and this thickness is suitable for a configuration in which a plurality of purification members 10 are overlapped. I can say that.

  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. Next, the pollutant removing member 3 is arranged inside the installed duct type hollow structure 2 substantially in parallel with the flowing direction of the polluted air. At that time, the arrangement configuration of the pollutant removal member 3 (number of blocks 9, arrangement, type of purification function, etc.) is determined based on the required air cleaning capacity, processing air volume and allowable pressure loss. According to the determination, the pollutant removing member 3 is arranged. Specifically, using any one of the coupling members 12, 13, 14, and 15, a plurality of blocks 9 made of an assembly of a predetermined number of purification members 10 are produced, and these blocks 9 are formed as support members 16, 17, Any one of 18 is arranged at a preset position.

  When the installation of the contaminant removing member 3 is completed, the top plate 4 is attached to a predetermined position at the upper end of the duct type hollow structure 2 as shown in FIG. Specifically, the top plate 4 is mounted on a rectangular frame-shaped mounting portion formed by the ceiling crossing portion 6 and the flange portion 7 at the upper end of the flow path component 5 via a silicon packing or the like. Then, fix this 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.

Specifically, as the contaminant contained in the contaminated air, for example, in the case of air outside a building, NOx, SOx, CO, CO ₂ , benzene, exhausted from surrounding factories, automobiles, underground spaces, etc. Examples include volatile organic compounds such as trichlorethylene, tetrachloroethylene, and dichloroethane, and suspended particulate matter. As for the air inside the building, bad smells such as CO ₂ generated from living spaces such as offices, volatile organic compounds such as formaldehyde and toluene generated from building materials, paints, furniture, etc., ammonia generated from toilets, etc. Substances, organic compound dust caused by tobacco, etc. are applicable, and if the building is a zoo or aquarium, it is a malodorous substance such as trimethylamine generated during the animal or its breeding process, a factory, etc. May include various chemical substances.

  If contaminated air containing such contaminants is circulated through the air cleaning device 1 for a long period of time, the contact surface with the contaminated air will eventually deteriorate in performance and the purification function will deteriorate. For this reason, when the deterioration of the function of the pollutant removal member 3 is detected periodically or based on the measurement result of the type / concentration of the components of the polluted air, the purification members 10 are rearranged to change their arrangement or orientation. Thus, the use surface of the purification member 10 that has been in contact with the contaminated air is switched to the unused surface of the purification member 10 that has not yet been in contact with the contaminated air, and the purification function of the contaminant removal member 3 is restored. Process.

  As a method of switching between the used surface and the unused surface, for example, there are a method shown in FIG. 7 and a method shown in FIG. The hatched portion in these figures indicates the usage surface with a reduced purification function.

  At the beginning of the installation of the pollutant removal member 3, as shown in FIGS. 7 (a) and 8 (a), a block composed of an assembly of the purification members 10a and 10b in the width direction of the duct type hollow structure 2, A first array arranged in the order of a block made up of an assembly of members 10c, 10d, 10e, a block made up of an assembly of purification members 10f, 10g, 10h, and a block made up of an assembly of purification members 10i, 10j, as well as a duct In the width direction of the mold hollow structure 2, a block made of an assembly of purification members 10k, 10l, a block made of an assembly of purification members 10m, 10n, 10o, a block made of an assembly of purification members 10p, 10q, 10r, And the second array arranged in the order of the blocks composed of the assembly of the purification members 10s, 10t, and the first array and the second array are the duct type hollow structure 2 It is arranged in the longitudinal direction. Further, the blocks at both ends of each array are arranged in a state where one surface is in close contact with the side wall surfaces 2 a and 2 b of the duct type hollow structure 2.

  In the method shown in FIG. 7, when switching between the used surface and the unused surface, as shown in FIGS. 7A and 7B, the purification member disposed at one end (right end in the figure) of the block 9 10 and the use surface of the purification member 10 arranged at the other end (the left end in the figure) are overlapped so that the contaminated air contact surface of the block 9 becomes an unused surface in the same block. Do 10 sorts.

  For example, in the case of a block composed of an assembly of purification members 10c, 10d, and 10e, the purification member 10c that is initially arranged at one end is moved to the other end side of the block 9, and this purification member 10c and the other The cleaning members are rearranged in the order of 10d, 10e, and 10c by superimposing the use surfaces of the cleaning members 10e that are initially arranged at the ends. Thereby, the contaminated air contact surface of the block is switched to an unused surface, and the purification function of the block can be recovered.

  Thereafter, when the purification function of the block is lowered again, the purification members are similarly rearranged in the order of 10e, 10c, and 10d. Thereby, the contaminated air contact surface of the block is switched to an unused surface, and the purification function of the block can be restored again. That is, according to this method, the purification function can be recovered as many times as the number of purification members 10 constituting one block. Therefore, the greater the number of purification members 10, the longer the period during which the purification function can be maintained.

Note that the rearrangement of the purification members 10 may be performed on all the blocks 9 as shown in FIG. 7B, or as shown in FIGS. 7C and 7D. Only the block 9 located in an area (for example, a part on the entrance side) where the removal rate is likely to decrease may be targeted. As a method for grasping an area where the removal rate of contaminated air is low, for example, a sampling tube is inserted into an observation port provided in the ceiling crossing section 6 and connected to an analytical instrument, and data obtained by measuring the contaminated air concentration is used. It can be judged based on.
According to the method shown in FIG. 7, the amount of movement of each purification member 10 is small, and can be suitably used when only a specific block such as a block whose function has been lowered is recovered.

  On the other hand, in the method shown in FIG. 8, when switching between the used surface and the unused surface, as shown in FIGS. 8A and 8B, the purification member 10 disposed at one end of the block 9 is By parallel translation to the other end side of the adjacent block 9, the purification member 10 disposed at one end of the block 9 and the use surfaces of the purification member 10 disposed at the other end of the adjacent block 9 are overlapped. In addition, the purification members 10 of each block 9 are rearranged so that the contaminated air contact surface of each block 9 becomes an unused surface.

  For example, in the first arrangement, the purification members 10b, 10e, 10h out of the purification members 10b, 10e, 10h, 10j originally arranged at one end of each block are translated to the other end side of the adjacent block. Then, the purification members 10b, 10e, 10h and the use surfaces of the purification members 10c, 10f, 10i originally arranged at the other ends of the adjacent blocks are overlapped with each other, and one of the duct-type hollow structures 2 is overlapped. The purification member 10j disposed in the vicinity of the side wall surface 2a is inserted between the other side wall surface 2b of the duct type hollow structure 2 and the purification member 10a, so that the use surfaces of the purification member 10j and the purification member 10a are arranged. Overlapping.

  As a result, the purification member 10 arranged at one end of each block is shifted one by one to the other end of the other block, and each block of the first array is a block made up of a collection of purification members 10j, 10a, Reorganized into blocks composed of aggregates of purification members 10b, 10c, 10d, blocks composed of aggregates of purification members 10e, 10f, 10g, and blocks composed of aggregates of purification members 10h, 10i. All faces are switched to unused faces.

  Thereafter, when the purification function of these blocks is lowered again, the purification members 10a, 10d, 10g, and 10i arranged at one end of each block are similarly shifted one by one to the other end of the other block. Thereby, all the contaminated air contact surfaces of each block are switched to unused surfaces, and the purification function of each block can be restored again. That is, also in this method, as the number of the purification members 10 constituting one block increases, the number of times that the function can be recovered increases, so that the period during which the purification function can be maintained becomes longer.

As shown in FIG. 8B, the purification members 10 are rearranged by arranging all the arrays (first array, second array,...) Aligned in the length direction of the duct type hollow structure 2. Even if it is set as a target, as shown in FIGS. 8C and 8D, only a part of the array (for example, the first array) in which the removal rate of contaminated air is likely to decrease is set as the target. Also good.
According to the method shown in FIG. 8, like the method shown in FIG. 7, the movement amount of each purification member 10 is small. For example, when the functions of a plurality of blocks 9 are recovered simultaneously, the purification member 10 is efficiently moved. Sorting can be performed.

  As described above, according to the air cleaning device 1 of the present embodiment, the pollutant removing member is formed by an assembly in which at least two plate-like purification members 10 having a purification function on both surfaces are stacked and brought into close contact with each other. Therefore, only the outer surface of the purification member 10 disposed at both ends of the block 9 becomes a surface that comes into contact with contaminated air (contaminated air contact surface), and the other surface (the purification member 10). The inner surface where the two overlap each other is a surface that does not come into contact with contaminated air. For this reason, if the purification members 10 are rearranged so that their arrangement or orientation is changed, the surface that has been in contact with the contaminated air (usage surface) until now is the surface that is not yet in contact with the contaminated air (unused). Surface), and the purification function of the contaminant removing member 3 can be recovered easily and quickly.

  In addition, since no cleaning water is required for the recovery of the purification function, the air cleaning device 1 can be installed even in places where it is difficult to supply tap water or rainwater, and material deterioration or equipment due to excessive cleaning can be installed. There is little concern about the complexity of the structure, and even an adsorbent that is not suitable for cleaning can be used for the contaminant removal member 3.

  In addition, according to the air cleaning method of the present embodiment, the purification member 10 is removed when the deterioration of the function of the pollutant removing member 3 is detected periodically or based on the measurement result of the type / concentration of the components of the polluted air. By rearranging and changing the arrangement or orientation of each, the use surface of the purification member 10 that has been in contact with the contaminated air is switched to the unused surface of the purification member 10 that has not yet been in contact with the contaminated air. Since the purification function of the substance removal member 3 is restored, the contaminant removal performance of the air cleaning device 1 can be maintained in a stable state over a long period of time.

  Furthermore, according to the air cleaning method of the present embodiment, (1) the purification function can be quickly recovered because it is a simple task of rearranging the purification members 10 in the vicinity, and (2) unused surface Until there is no longer any need to put in and out the purifying member 10, it is possible to save labor and shorten the time of the entire work, and (3) the purifying member 10 can be moved in units of one sheet. It is possible to flexibly cope with local functional recovery, such as functional recovery on the inlet side, which tends to cause a decrease.

  In addition, when a large number of purification members 10 are arranged inside the duct-type hollow structure 2, it is cumbersome to move the purification members 10 one by one. It is possible to further simplify the work.

  In the embodiment shown in FIGS. 9 and 10, a pair of wheels 20 are detachably attached to the lower end portion of each purification member 10. Further, on the bottom surface 2c of the duct-type hollow structure 2, a groove-like track 21 for running the wheel 20 is provided in the direction in which the purification members 10 are rearranged (the width direction of the duct-type hollow structure 2). It has been. For this reason, when switching a used surface and an unused surface, each purification member 10 can be moved easily. Moreover, since the wheel 20 is attached to each purification member 10, each purification member 10 can be moved independently of other purification members.

  As shown in FIG. 10, a recess 22 for stopping the wheel 20 at the installation position of the purification member 10 is formed in the track 21. As this hollow 22, as shown to Fig.10 (a) and (b), the wheel 20 of the purification member 10 for 1 block is stopped collectively, as shown to FIG.10 (c)-(g). In addition, in each case, an ascending slope for separating the wheel 20 from the recess 22 is formed in the traveling direction of the wheel 20.

  In the example of FIGS. 10A and 10B, the recess 22 is formed in an inverted trapezoidal shape. Among these, in the example of FIG. 10B, the length of the bottom of the inverted trapezoidal shape is one block of the wheel 20. It is set shorter than the distance between both ends. For this reason, the wheels 20 of the purification member 10 at both ends of one block stop at the inverted trapezoidal inclined portions, respectively, and a pressing force acts from the both ends of the block 9 toward the center, thereby assisting the unity of one block. Occurs. On the other hand, in the example of FIGS. 10C to 10G, the recess 22 is formed in an inverted trapezoidal shape or an inverted triangular shape. As in the examples of FIGS. 10D and 10F, the angle of the outer inclined portion of the recess 22 corresponding to the wheel 20 of the purification member 10 at both ends is made sharper than that of the other inclined portions. Similarly to 10 (b), a pressing force is applied from both ends of the block 9 toward the center, so that the effect of assisting the unity of one block is produced.

  In the above embodiment, any of the above-described coupling members 12, 13, 14, and 15 can be used in order to enhance the integrity of the block 9 after the purification members 10 are rearranged. . The track 21 may be formed directly on the bottom surface 2c of the duct type hollow structure 2, or may be formed on another member and installed on the bottom surface 2c of the duct type hollow structure 2.

  In the example shown in FIG. 11, a hanging tool 25 with a hook is attached to the upper end portion of each purification member 10, and a transfer member 27 for hooking the hook 26 is installed on the ceiling portion of the duct type hollow structure 2. For this reason, when switching a used surface and an unused surface, each purification member 10 can be moved easily. A stopper 28 for fixing the hook 26 at the installation position of the purification member 10 is attached to the transfer member 27. The stopper 28 only needs to have a structure that prevents natural suspension of the suspending tool 25 and can be easily moved when it is slid artificially.

  Thus, when each purification member 10 is suspended and supported, the lower end portion of each purification member 10 may be in contact with the bottom surface 2c of the duct-type hollow structure 2 or may be slightly used for easy movement. Alternatively, the wheels 20 may be attached to the lower ends of the respective purification members 10 so that they can move along the track 21 provided below them. Similarly to FIG. 10, the track 21 may be provided with a recess 22 for stopping the wheel 20 at the installation position of the purification member 10.

When the blocks 9 of the pollutant removal member 3 are arranged at equal intervals, the method shown in FIGS. 12 and 13 can be employed as a method of switching between the used surface and the unused surface.
In this method, as shown in FIG. 13 (a), in the width direction of the duct-type hollow structure 2, a block composed of an assembly of purification members 10a, 10b and an assembly of purification members 10c, 10d, 10e are formed. The blocks 9 are arranged at equal intervals in the order of the block, the block composed of the assembly of the purification members 10f, 10g, and 10h, and the block composed of the assembly of the purification members 10i and 10j. The number is one less than the other blocks, and one surface is brought into close contact with the side wall surface of the duct type hollow structure 2.

  In this state, when polluted air is circulated inside the duct type hollow structure 2 and then the purification function of each block 9 is lowered as shown in FIG. 13B, it is arranged at one end of each block 9. The purifying members 10 of the respective blocks 9 are rearranged together by simultaneously translating the purifying members 10 to the other end side of the adjacent blocks by the same distance.

  Specifically, as shown in FIGS. 12A and 12B, of the purification members 10b, 10e, 10h, and 10j initially disposed at one end of each block 9, the purification members 10b, 10e, and 10h are replaced with each other. Then, the same distance is simultaneously translated to the other end side of the adjacent block 9, and the purification members 10b, 10e, 10h and the purification members 10c, 10f, 10i originally arranged at the other end of the adjacent block 9 are moved. As shown in FIGS. 12 (c) and 12 (d), the purification members 10j arranged in the vicinity of the one side wall surface 2a of the duct type hollow structure 2 are replaced with the duct type hollow. It inserts between the other side wall surface 2b of the structure 2 and the purification member 10a, and the use surfaces of the purification member 10j and the purification member 10a are overlapped.

  As a result, the purification member 10 arranged at one end of each block is shifted one by one to the other end of the other block, and as shown in FIG. 13 (c), the purification member 10j is composed of an assembly of the purification members 10j and 10a. Blocks, blocks composed of aggregates of purification members 10b, 10c, 10d, blocks composed of aggregates of purification members 10e, 10f, 10g, and blocks composed of aggregates of purification members 10h, 10i are reconstituted. All air contact surfaces are switched to unused surfaces.

Thereafter, as shown in FIG. 13 (d), when the purification functions of these blocks are reduced again, purification members 10a and 10d disposed at one end of each block are similarly formed as shown in FIG. 13 (e). , 10g, 10i are shifted one by one to the other end of the other block. Thereby, all the contaminated air contact surfaces of each block are switched to unused surfaces, and the purification function of each block can be restored again.
Thereafter, as shown in FIG. 13 (f), when the purification function of these blocks 9 is lowered again, each block 9 is taken out from the duct-type hollow structure 2 and replaced with a new block or a regenerated block.

  In the above method, as shown in FIG. 12, it is also possible to use a jig 29 for simultaneously moving a plurality of purification members 10 arranged at one end of each block 9. This jig 29 has a plurality of sets of engaging pieces 29b and 29c projecting on one surface of a strip-like substrate 29a. One end of each block 9 is formed by a pair of engaging pieces 29b and 29c. The spacing between the engaging pieces is set so that the purification members 10 arranged on the two can be sandwiched one by one. When this jig 29 is used, first, as shown in FIG. 12A, the purification member 10 disposed at one end of each block 9 is sandwiched between the engagement pieces 29b and 29c, respectively. The jig 29 is set. Then, from this state, as shown in FIGS. 12B and 12C, if the jig 29 is pulled toward the other end of each block 9, the purification disposed at one end of each block 9 is performed. The member 10 can be simultaneously moved by the same distance to a position where the member 10 contacts the purification member 10 disposed at the other end of the adjacent block. For this reason, it is possible to easily and quickly switch from the used surface to the unused surface. In this method, the greater the number of blocks, the greater the number of purification members 10 that can be moved simultaneously.

It is a schematic diagram which shows one Embodiment of the air purification apparatus which concerns on this invention. It is a figure explaining the relationship between the thickness and the number of sheets of a purification member. It is a perspective view which shows the structural example of a coating | coated member. It is a perspective view which shows the structural example of a coupling member. It is a perspective view which shows the structural example of a supporting member. It is a perspective view which shows the example of arrangement | positioning of each block of a contaminant removal member. It is a top view which shows an example of the function recovery method of a contaminant removal member. It is a top view which shows an example of the function recovery method of a contaminant removal member. It is a perspective view which shows an example of the installation method of a purification member. It is a schematic diagram which shows the structural example of the hollow provided in the track | orbit of FIG. It is a schematic diagram which shows an example of the installation method of a purification member. It is a figure explaining the usage method of the movement jig | tool of a purification member. It is a top view which shows an example of the function recovery method of a contaminant removal member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air purification apparatus 2 Duct type hollow structure 3 Pollutant removal member 9 Block 10 Purification member

Claims (5)

An air cleaning apparatus comprising: a duct-type hollow structure having an air flow path; and a contaminant removing member disposed in the duct-type hollow structure in a detachable state substantially parallel to the air flow direction. Because
The pollutant removal member has a plurality of blocks arranged substantially parallel to the wall surface of the duct type hollow structure, and each block has at least two or more purification members having a purification function on both surfaces. An air cleaning device comprising an assembly in which an overlapping surface does not touch air. An air cleaning method for purifying the contaminated air by circulating the contaminated air through the duct type hollow structure of the air cleaning device according to claim 1,
Periodically or when detecting a decrease in the function of the pollutant removal member based on the measurement result of the type / concentration of the component of the polluted air, by rearranging the purification member and changing the arrangement or orientation of each, By switching the use surface of the purification member that has been in contact with the contaminated air to the unused surface of the purification member that has not yet been in contact with the contaminated air, the purification function of the contaminant removal member is restored. Air cleaning method.   Place the purification member placed at one end of the block and the use surfaces of the purification member placed at the other end so that the contaminated air contact surface of the block becomes the unused surface. 3. The air cleaning method according to claim 2, wherein the purification members are rearranged.   By purifying the purification member arranged at one end of the block to the other end side of the adjacent block, the purification member arranged at one end of the block and the purification member arranged at the other end of the adjacent block 3. The air cleaning method according to claim 2, wherein the use surfaces of the members are overlapped so that the purification members of each block are rearranged so that the contaminated air contact surface of each block becomes the unused surface. In the case where the blocks of the contaminant removal member are arranged at equal intervals,
The purification members arranged at one end of each block are simultaneously translated by the same distance to the other end side of the adjacent block, so that the purification members of each block are rearranged together. Item 5. The air cleaning method according to Item 4.

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