JP2013184104A - Filler, filler unit, and air purifying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filler capable of being manufactured by simple and trouble-free operation and reducing manufacturing cost while improving durability and organic material removing performance, and to provide a filler unit and an air purifying apparatus.SOLUTION: Filler 322 includes roving clothes 322a containing glass fiber; and spacers 322b which are held between the roving clothes 322a respectively and are constituted by forming mesh composed of polypropylene in a corrugated shape.

Description

  The present invention relates to a filler that holds a liquid that absorbs pollutants contained in polluted air, a filler unit, and an air purifier that cleans the polluted air in contact with the liquid.

  Patent Document 1 discloses a system for removing air containing pollutants present in clean room air by bringing it into contact with a liquid and purifying the air.

  Further, Patent Document 2 discloses an air purification device in which contact efficiency between water or a chemical solution and contaminated air is improved by a filler.

  Furthermore, Patent Document 3 discloses a filler made of a fabric and a plastic mesh.

JP 2000-33221 A JP 2004-305919 A JP 2011-016043 A

  The present invention provides a filler, a filler unit, and an air purification device that can be manufactured by a simple operation that does not require a lot of trouble while improving organic substance removal, and that can reduce costs and improve durability. The purpose is to provide.

  The present invention is a filler that solves the above-described problems, and a roving cloth that includes glass fibers whose surface is heated, and a spacer that is sandwiched between the roving cloths and has a mesh made of polypropylene formed in a corrugated shape. It is characterized by having.

  The roving cloth is alternately folded, and the spacers are sandwiched between the roving cloths that are alternately folded.

  Further, the filler unit includes the filler, a mesh that supports the filler below, a side surface that surrounds the side surface of the filler, and a lid that covers the surface not surrounded by the side surface portion. And a case.

  Furthermore, the air purifier includes a cylindrical packed tower, a roving cloth containing glass fibers, and a spacer formed by corrugating a mesh made of polypropylene, which is sandwiched between the roving cloth and the roving cloth. A packing material arranged to partition the top and bottom horizontally or substantially horizontally, and a liquid supply unit for supplying a liquid from above the packing material, introducing contaminated air from below the packed tower, The air is passed through and contacted with the packing material wetted with the liquid supplied from the liquid supply unit, and blown as purified air from above the packed tower.

  Further, the liquid contains ozone.

  Since the filler according to the present invention includes a roving cloth containing glass fibers whose surface is heated, and spacers sandwiched between the roving cloths and formed in a corrugated mesh made of polypropylene, the glass fibers By decomposing and volatilizing surface deposits by heating to expose the surface of the glass itself, in addition to being originally highly hydrophilic, the effect of surface tension is also added, and organic matter is obtained by having extremely high hydrophilicity. The removability is improved, and further heating is performed at a high temperature, so that it becomes aseptic and can prevent the growth of microorganisms.

  In addition, since the roving cloth is alternately folded and the spacers are sandwiched between the alternately folded roving cloths, it can be manufactured by a simple and labor-saving operation, and the cost can be reduced.

  Further, the filler unit includes the filler, a mesh that supports the filler below, a side surface that surrounds the side surface of the filler, and a lid that covers the surface not surrounded by the side surface portion. Since it is provided with a case, it can be easily transported and can be easily attached to other devices.

  Furthermore, the air purifier includes a cylindrical packed tower, a roving cloth containing glass fibers, and a spacer formed by corrugating a mesh made of polypropylene, which is sandwiched between the roving cloth and the roving cloth. A packing material arranged to partition the top and bottom horizontally or substantially horizontally, and a liquid supply unit for supplying a liquid from above the packing material, introducing contaminated air from below the packed tower, Since the air is passed through the filler immersed in the liquid supplied from the liquid supply unit and blown as purified air from above the packed tower, the deposits on the glass fiber surface are decomposed and volatilized by heating. By exposing the surface of the glass itself, in addition to being originally highly hydrophilic, it also has the effect of capillary action, and has extremely high hydrophilicity to remove organic matter. Improved, to heat at a higher temperature, becomes sterile, it can prevent the growth of microorganisms.

  Further, since the liquid contains ozone, it is possible to prevent the growth of microorganisms in the filler, and it can be used for a long time.

It is a figure which shows an air purification apparatus. It is a figure which shows a filler case. It is a figure which shows a filler. It is a figure which shows a roving cloth. It is a figure which shows a filler unit. It is the figure which removed and removed the lid | cover of the filler unit of FIG. It is a graph which shows the durability with respect to ozone water at the time of using the roving cloth piece of this embodiment as a filler, and a polyester piece. It is a graph which shows the removal rate of the organic substance in the air of the filler which uses the roving cloth of this embodiment as a filler.

  Hereinafter, an embodiment of removing an organic substance by an air purifying apparatus according to the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram illustrating an air purification device.

  As shown in FIG. 1, the air purification device 1 of the present embodiment includes a blower-side air conditioner 2, an air purification unit 3, an exhaust-side air conditioner 4, a liquid supply unit 5, and a drainage unit 6.

  The blower-side air conditioner 2 is a part that takes in the contaminated return air RA from the clean room via the first passage 11. The blower-side air conditioner 2 includes a first HEPA filter 21 that removes microorganisms, dust, or dust in the return air RA that passes through, and a cooling coil 22 that cools the return air RA that has passed through the first HEPA filter 21. . Cold water is introduced into the cooling coil 22 from the coil cold water introduction passage 15, and after the return air RA is cooled, it is discharged from the coil cold water drainage passage 16.

  The air purification unit 3 purified the return air RA by introducing the return air RA from the blower-side air conditioner 2 through the second passage 12 and then purified to the exhaust-side air conditioner 4 through the third passage 13. This is the part that blows the supply air SA. The air purifying unit 3 includes a cylindrical packed tower 30, a rectifying plate 31 that is arranged so as to partition the upper and lower sides horizontally or substantially horizontally below the packed tower 30, and a rectifying hole is provided; A packing unit 32 containing a hydrophilic packing and arranged horizontally or substantially horizontally inside the packed tower 30 above 31 and horizontally inside the packed tower 30 above the packing unit 32. Alternatively, the eliminator 34 is arranged so as to partition the upper and lower sides substantially horizontally and removes mist.

  The exhaust-side air conditioner 4 is a part that blows the purified supply air SA blown from the air purification unit 3 through the third passage 13 to the clean room through the fourth passage 14. The exhaust-side air conditioner 4 includes a fan 41 that blows the purified supply air SA to the clean room, a heating coil 42 that warms the supply air SA that has passed through the fan 41 to a predetermined temperature required for the clean room, and the supply air SA. A second HEPA filter 43 that further removes microorganisms, dust, dust, and the like. Hot water is introduced into the heating coil 42 from the coil hot water introduction passage 17, and after the supply air SA is heated, it is discharged from the coil hot water drainage passage 18.

  The liquid supply unit 5 is a part that supplies a liquid for purifying the air to the filler unit 32 of the air purification unit 3. The liquid supply unit 5 includes a first supply pipe 51 to which makeup water is supplied, a heat exchanger 52 that cools the makeup water in the first supply pipe 51 with cold water introduced from the cold water introduction passage 19 for heat exchanger, The pump 53 for sending makeup water cooled by the heat exchanger 52, the ozone water generator 54 for converting the makeup water sent by the pump 53 into ozone water as a purification liquid, and the ozone water generator 54. A second supply pipe 55 that sends ozone water to the air purification unit 3, a bypass pipe 56 that bypasses the makeup water sent by the pump 53 without passing through the ozone water generator 54, and the amount of makeup water that passes through the bypass pipe 56 And a plurality of electromagnetic valves 57 for adjusting the concentration of ozone water generated by the ozone water generator 54 and ozone sent from the second supply pipe 55 above the filler unit 32 of the air purification unit 3. Filling with water Having a nozzle 58 for injecting the unit 32.

  The setting of the ozone water concentration or the setting time of the ozone water spraying is performed by setting the electromagnetic valve 57.

  The first method is a method of operating the electromagnetic valve 57 by on-off control. The first method is to spray ozone water at time t in one day and to spray only makeup water at the remaining (24-t) time.

  The second method is a method of mixing ozone water sent from the ozone water generator 54 and make-up water according to the opening of the electromagnetic valve 57 to obtain ozone water having a constant concentration, and spraying the ozone water. . A second method is to spray ozone water having a constant concentration throughout the day.

  In the third method, the electromagnetic valve 57 incorporating the control of time schedule management in the second method is used to spray ozone water having a relatively high concentration at the time t of the day and sterilize the makeup water and the filler. It is a time zone in which low-concentration ozone water is sprayed and the makeup water is sterilized in the remaining (24-t) time.

  The selection of the first, second, and third methods is determined in consideration of the microbial count concentration contained in the makeup water and the microbial growth rate that propagates in the filler 32. The microbial concentration in the makeup water can be determined as a bacterial concentration and a fungal concentration by the plate dilution method or the like. Further, the microorganism growth rate in the filler 32 can be obtained by continuously measuring the microorganism concentration in the drainage of the drainage section 6 by the same method as the microorganism concentration in the makeup water.

  In this embodiment, water is used to remove contaminants in the return air RA. However, an alkaline solution, an acidic solution, or the like may be used depending on the type of contaminant in the return air RA. . Ozone water is used for sterilizing microorganisms.

  The drainage unit 6 includes a storage member 61 that stores used contaminated water that flows from the packed tower 30 of the air purification unit 3 and a drain pipe 62 that drains the contaminated water stored in the storage member 61.

  The drainage unit 6 may be provided with a monitoring member such as a sensor for monitoring the state of the contaminated water after use flowing from the air purification unit 3. And according to the state of contaminated water, it is preferable to control the water pump 53 and the electromagnetic valve 57 to adjust the amount of water spray. For example, if the contamination level of contaminated water is higher than a predetermined index value, the sprinkling amount is increased. If the contamination level of the contaminated water is lower than a predetermined index value, reducing the sprinkling amount reduces energy saving operation. It becomes possible.

  Next, the filler unit 32 of the air purification unit 3 will be described in detail.

  FIG. 2 is a view showing the case 321 of the filler unit 32. FIG. 3 is a diagram showing the filler 322.

  The filler unit 32 shown in FIG. 1 has a case 321 as shown in FIG. 2 and a filler 322 as shown in FIG.

  As shown in FIG. 2, the case 321 includes a mesh 321a that supports the filler 322 below and allows air and liquid to pass therethrough, a side surface 321b that surrounds the side surface of the filler 322, and a surface that is not surrounded by the side surface 321b. A lid portion 321c that covers the lid.

  As shown in FIG. 3, the filler 322 includes a roving cloth 322a made of an inorganic material and a spacer 322b formed by bending a polypropylene mesh into a corrugated shape. As the spacer 322b, a spacer manufactured in the same manner as that described in Patent Document 3 may be used. As shown in FIG. 3, the spacer 322b may be a transverse wave type in which the wave top is parallel to the horizontal direction, or may be a longitudinal wave type (not shown) in which the wave top is parallel to the vertical direction.

  FIG. 4 is a diagram showing the roving cloth 322a.

Roving cloth 322a has a lateral beam 322a ₁ which was thick bundles side by side fibers laterally, and vertical beams 322a ₂ which was thick bundles side by longitudinal fibers, a bundle vertical and horizontal beams 322a ₁ 322a ₂ is a plain woven fabric.

  The roving cloth 322a generally has water repellency because it is manufactured by attaching an organic substance or the like to glass fibers in the manufacturing process. By heating the roving cloth 322a at 400 ° C. or more for 1 day or longer, the deposits on the glass fiber surface can be decomposed and volatilized to expose the surface of the glass itself. Glass is originally highly hydrophilic, and also has the effect of capillary action between glass fibers. That is, the roving cloth 322a has high hydrophilicity. Moreover, since the roving cloth 322a is heated at a high temperature, it is in a sterile state. Furthermore, since the glass is an inorganic substance, the roving cloth 322a has high ozone resistance. Therefore, the roving cloth 322a is suitable as a filler.

  Note that the roving cloth 322a is preferably melted so that the upper and lower ends are baked with a gas burner or the like and the ends are not frayed. Further, the upper and lower end portions may be sewn with sewing machines in order to prevent fraying.

  FIG. 5 is a view of the filler unit 32 in which the case 321 is filled with the filler 322 as viewed from above. Moreover, FIG. 6 is the figure which looked at the filler unit 32 which opened the cover part 321c from the side.

  As shown in FIG. 3, the filler 322 wraps and forms the spacer 322b by alternately folding the roving cloth 322a. By folding the roving cloth 322a alternately and sandwiching the spacers 322b between the alternately folded roving cloths 322a, it becomes possible to reduce the process of cutting the roving cloth 322a, and by a simple and trouble-free operation It can be manufactured and the cost can be reduced.

  In addition, as shown in FIG. 5, it is preferable that the part which contact | abuts the case 321 when folding is made into the roving cross 322a.

  Next, the roving cloth 322 a and the spacer 322 b are skewered by a SUS (Steel Use Stainless) rod 323. In this manner, the filling material 322 is skewered by the SUS bar 323, so that the roving cloth 322 a and the spacer 322 b are prevented from being deformed or slipped off from the case 321.

  Next, as shown in FIG. 5, the folded filler 322 is put in the case 321. At this time, the portion of the roving cloth 322a that protrudes from the case 321 is cut off. Next, the lid member 321c is closed and fixed with a screw or the like, and the filler unit 32 is completed. Note that the filler 322 may be skewered with the SUS rod 323 after the filler 322 is put into the case 321.

  Thus, the filler unit 32 includes the filler 322, the mesh mesh 321a that supports the filler below, the side surface 321b that surrounds the side surface of the filler mesh 321, and the lid that is not surrounded by the side surface 321b. And a case 321 having a lid portion 321c that can be easily transported and can be easily attached to other devices.

  Next, the operation of the air purification apparatus 1 using such a filler 322 will be described.

  First, the flow of the liquid ejected from the nozzle 58 will be described with a second method.

  The makeup water supplied from the first supply pipe 51 is sent to the ozone water generator 54 through the heat exchanger 52 and the pump 53. The makeup water poured into the ozone water generator 54 is sent to the nozzle 58 from the second supply pipe 55 as ozone water. Here, the makeup water that bypasses the ozone water generator 54 and passes through the bypass pipe 56 is sent to the second supply pipe 55 with the flow rate adjusted by the electromagnetic valve 57. That is, ozone water and makeup water are mixed in the second supply pipe 55 and sent to the nozzle 58. Then, the ozone water whose concentration is adjusted is jetted from the nozzle 58 disposed above the filler unit 32 to the filler unit 32.

  The ozone water injected to the filler unit 32 flows downward, passes through the current plate 31, and is stored in the storage member 61 of the drainage unit 6. Thereafter, the water is drained from the drain pipe 62.

  Next, the flow of air until it is introduced as return air RA, purified and supplied as supply air SA will be described.

  First, in the blower-side air conditioner 2 that takes the return air RA into the blower-side air conditioner 2 from the clean room via the first passage 11, dust or dust in the return air RA is removed by the first HEPA filter 21, and the cooling coil 22. To cool the return air RA.

  Next, the return air RA is introduced from the blower-side air conditioner 2 to the lower side of the packed tower 30 of the air purification unit 3 through the second passage 12. The return air RA first passes through the current plate 31 from below. The return air RA that has passed through the current plate 31 enters the filler unit 32.

  In the filler unit 32, the ozone water sprayed from the nozzle 58 forms a wet surface on the surface of the roving cloth and flows down. Therefore, the filler unit 32 can remove organic substances in the return air RA when the return air RA passes through.

  Mist is removed from the air purified by passing through the filler unit 32 by the eliminator 34. And it is discharged | emitted from the packed tower 30, and leaves the air purification | cleaning part 3. FIG.

  Next, the air purified by the air purification unit 3 is blown to the exhaust side air conditioner 4 through the third passage 13 as the supply air SA. In the exhaust-side air conditioner 4, the supply air SA that has been blown by the fan 41, heated to a predetermined temperature required for the clean room by the heating coil 42, and from which dust and dust are further removed by the second HEPA filter 43 is supplied to the fourth passage. 14 to the clean room.

  Next, an example using such a filler will be described.

  First, specifications of the embodiment will be described.

  In this example, first, the roving cloth 322a was baked at 400 ° C. for 7 days to remove deposits on the surface, thereby increasing the hydrophilicity. The roving cloth 322a has a width of 1000 mm and a length of 50 m. The case 321 of the filler 322 has a cross section of 300 × 300 mm and a length of 1040 mm. The wave height of the spacer 322b was 5 mm, and the aperture was 2 mm. The SUS rods were polished at an acute angle and twelve pierced into the filler 322.

  The ozone resistance of the roving cloth 322a used for such a filler 322 was measured. In this example, a roving cloth piece and a polyester piece were immersed in a container supplied with a liquid of 10 ppm ozone at 2.5 L / min, and the change in weight of both pieces was measured.

  FIG. 7 is a graph showing durability against ozone water when the roving cloth piece of this embodiment is used as a filler and when a polyester piece is used. In FIG. 7, ● represents a roving cloth piece, and ■ represents a polyester piece.

  As shown in FIG. 7, the polyester piece increases in weight reduction rate as the immersion time becomes longer, whereas the roving cloth piece hardly increases in weight reduction rate even when the immersion time is long. . Therefore, obviously, the roving cloth piece is more durable against ozone than the polyester piece and can be used for a long time.

Next, the removal rate of the organic substance in the air of the filler using a roving cloth was measured. Air having a dew point of about 10 ° C. containing the organic solvent PGMEA (propylene glycol monomethyl ether acetate) is blown to the air purification unit 3 described above so that the wind speed in the packed tower 30 is 1.5 m / s. Further, water at 10 ° C. was sprinkled from above the filler unit 32 using a roving cloth so that the liquid gas ratio was 0.12 L / m ³ . And organic substance removal performance was measured to the elapsed time of operation 512 hours.

  FIG. 8 is a graph showing the removal rate of organic substances in the air of the filler using the roving cloth of the present embodiment as the filler.

As a result, as shown in FIG. 8, the organic matter removal rate was stable at 90% or more during the operation time. Moreover, the removal rate of organic substances was stable at 90% or more during the operation time even when the amount of sprinkling was changed and the liquid gas ratio was 0.1 L / m ³ or 0.08 L / m ³ .

  That is, the removal rate of the organic substance in the air of the filler using the roving cloth of this embodiment was able to stably maintain a high removal rate.

  As described above, the filler 322 according to the present embodiment includes a roving cloth 322a containing glass fibers whose surfaces are heated, and a spacer 322b that is sandwiched between the roving cloth 322a and a mesh made of polypropylene is formed into a corrugated shape. By decomposing and volatilizing the adherence on the surface of the glass fiber by heating and exposing the surface of the glass itself, in addition to being originally highly hydrophilic, the effect of surface tension is also added. Since it has high hydrophilicity and is heated at a high temperature, it becomes aseptic and the organic matter removability is improved.

  Further, since the roving cloth 322a is alternately folded and the spacers 322b are sandwiched between the alternately folded roving cloths 322a, the manufacturing can be performed by a simple operation that does not require time and cost can be reduced.

  Furthermore, the filler unit 32 includes a filler 322, a mesh 321a that supports the filler below, a side surface 321b that surrounds the side surface of the filler 322, and a lid that covers the surface that is not surrounded by the side surface 321b. Since the case 321 having the 321c is provided, it can be easily transported and can be easily attached to other devices.

  Furthermore, the air purification device 1 includes a cylindrical packed tower 30, and a spacer 322b that is sandwiched between a roving cloth 322a and a roving cloth 322a containing glass fibers, and a mesh made of polypropylene is formed into a corrugated shape, Provided with a packing material 322 arranged so as to partition the top and bottom horizontally or substantially horizontally inside the packed tower 30, and a liquid supply unit 5 for supplying a liquid from above the packing material 322, and contaminated from below the packed tower 30. Since air is introduced and air is passed through the filler 322 immersed in the liquid supplied from the liquid supply unit 5 and blown as purified air from above the packed tower 30, the deposits on the glass fiber surface are heated. By decomposing and volatilizing to expose the surface of the glass itself, in addition to being originally highly hydrophilic, the effect of capillary action is also added, resulting in extremely high hydrophilicity Organic removal property is improved by having a further, for heating at a high temperature, it is sterile, it can prevent the growth of microorganisms

  Further, since the liquid contains ozone, the organic substance removability is further improved, and the durability of the filler 322 with respect to ozone is improved, so that it can be used for a long time.

  In addition, this invention is not limited by this embodiment. That is, in the description of the embodiments, many specific details are included for illustration, but those skilled in the art can add various variations and modifications to these details without departing from the scope of the present invention. It will be understood that this is not exceeded. Accordingly, the exemplary embodiments of the present invention have been described without loss of generality or limitation to the claimed invention.

DESCRIPTION OF SYMBOLS 1 ... Air purification apparatus 2 ... Blower side air conditioner 3 ... Air purification part 30 ... Packing tower 32 ... Filler unit 321 ... Case 322 ... Filler 4 ... Exhaust side air conditioner 5 ... Liquid supply part 6 ... Drainage part

Claims (5)

A roving cloth containing glass fiber and having a heated surface;
Spacers sandwiched between the roving cloths and formed into a corrugated mesh made of polypropylene,
The filler characterized by having. The filler according to claim 1, wherein the roving cloth is alternately folded, and the spacer is sandwiched between the roving cloths that are alternately folded. The filler according to claim 1 or 2,
A case having a mesh that supports the filler below, a side surface that surrounds the side surface of the filler, and a lid that covers the surface not surrounded by the side surface;
A filler unit comprising: A cylindrical packed tower,
It is sandwiched between a roving cloth containing glass fiber and the roving cloth, and has a spacer formed by forming a mesh made of polypropylene into a corrugated shape, and is arranged so as to partition the top and bottom horizontally or substantially horizontally inside the packed tower. Filling material,
A liquid supply unit for supplying a liquid from above the filler;
With
Contaminated air is introduced from below the packed tower, the air is brought into contact with the packing material wetted by the liquid supplied from the liquid supply unit, and blown as purified air from above the packed tower. Air purifier. The air purifier according to claim 4, wherein the liquid contains ozone.

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