JP2004290913A - Filter unit, and unit-exchangeable filter system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter unit hardly causing the deformation of a filter medium even when the height of the filter unit in the direction of a pleating line exceeds 610 mm and the pressure loss is increased, and having excellent maintainability and to provide a unit-exchangeable filter system. <P>SOLUTION: This filter unit 113 is housed to be attached/detached to/from a frame 112 of the unit-exchangeable filter system. The unit 113 consists of a layered body obtained by layering at least two pleated filter media 115 in the direction of the pleating line and integrating the end faces 115a, which are superimposed on one another in the direction of the pleating line, of the media 115 with one another while interposing a reinforcing plate 117. One piece 112a parted from the frame 112 is joined to the side face of the layered body or the end face of the layered body in the media 115-layered direction. When the unit 113 is housed in the frame 112, the piece 112a is integrated with the frame 112. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is directed to a unit exchange type filter device in which a filter unit for dust removal or deodorization is detachably housed in a frame, and only a used filter unit is exchanged to reuse a frame, and the unit exchange type filter. The present invention relates to a filter unit used in an apparatus.
[0002]
2. Description of the Related Art
. Conventionally, as a unit exchange type filter device 11 in which a filter unit is detachably housed in a frame and only a used filter unit is replaced so that the frame can be reused, as shown in FIG. 12 are separated and joined, and when the filter unit 13 is stored in the frame 12, the one piece 12a is configured to be integrated with the frame 12 (for example, in some cases). Patent Document 1).
[0003]
[Patent Document 1]
JP, 2000-210513, A In this unit exchange type filter device, a filter system is assembled in order of a coarse dust filter, a unit exchange type filter device, an air washer, a cooling / heating device, etc., for example.
. For example, a filter system 1 shown in FIG. 7 is a unit exchange type filter device using a filter unit 13 in which a frame 12 has a width of 50 to 80 mm, which can be grasped by one hand, and a filtration surface of a filter medium 15 has a 610 mm square. 11 are constituted by a unit exchange type filter device group in which a plurality of units 11 are combined in the width direction and the height direction.
[0004]
The maintenance of the filter system 1 is performed by pulling out each unit replacement type filter device 11 from the line of the unit replacement type filter device group of the filter system 1 along the rail 2 in the horizontal direction. 7, the filter unit 13 is pulled out upward from the frame 12 in the direction of the arrow in FIG. 7, a new filter unit 13 is stored in the frame 12 for replacement, and then mounted in the line of the system 1. I was
[0005]
However, when the line of the unit exchange type filter device group in the filter system 1 is configured by arranging the unit exchange type filter devices 11 in upper and lower two stages, as shown in FIG. During the extraction and replacement work of the filter unit 13 of the mold filter device 11, the lower unit replacement type filter device 11 cannot be pulled out along the rail 2 in the horizontal direction. Even when the extraction and replacement work of the filter unit 13 of the filter device 11 is being performed, the upper unit replacement type filter device 11 cannot be pulled out along the rail 2 in the horizontal direction. Required a lot of time and effort.
[0006]
For this reason, the height of the filter unit in the direction of the pleated fold line is increased, and the line of the unit replacement type filter device group in the filter system is arranged only one stage in the width direction of the unit replacement type filter device. I thought about configuring.
[0007]
However, in the case of such a filter system, if the height in the folding line direction of the filter unit exceeds 610 mm and the pressure loss exceeds, for example, around 300 Pa, the outer shape of the pleated filter medium is deformed, There is a possibility that a technical problem that an air leak occurs with the frame may occur.
[0008]
The present invention has been made in view of such a technical problem, even if the height of the filter unit in the folding line direction exceeds 610 mm and the pressure loss is high, the deformation of the filter medium is hardly caused, It is another object of the present invention to provide a filter unit and a unit replacement type filter device which are excellent in maintainability.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claims 1 to 3 (hereinafter referred to as the first invention) is a filter unit which is detachably housed in a frame of a unit exchange type filter device, wherein at least two filter units are provided. A pleated filter medium is stacked in the direction of the fold line, and the end faces of the respective filter media overlapping in the direction of the fold line are integrated via a reinforcing plate. A piece of the frame is cut off and joined to the end face in the stacking direction of the filter media, and the piece is integrated with the frame when the filter unit is stored in the frame. The feature of the filter unit is as follows.
[0010]
The invention according to claims 4 and 5 (hereinafter referred to as the "second invention") provides a unit-exchangeable filter device in which the filter unit according to any one of claims 1 to 3 is detachably stored in a frame. It is the gist.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the first invention and the second invention will be described in accordance with preferred embodiments shown in the drawings. The filter unit according to the second aspect of the present invention is configured such that the filter unit according to the first aspect of the present invention is detachably housed in a frame. The filter unit shown in FIGS. In the process of explaining the unit-replaceable filter device removably housed in the frame, both inventions will be described.
[0012]
In the unit replacement type filter device 111 shown in FIGS. 1 and 2, the filter unit 113 is detachably housed in the frame 112.
[0013]
In this unit exchange type filter device 111, the filter unit 113 stacks at least two pleated filter media 115 in the folding line direction, and attaches end faces 115a of the respective filter media 115 that overlap in the folding line direction to a reinforcing plate. It is composed of a laminated body integrated through the intermediary of the laminated body 117.
[0014]
The filter material 115 constituting the laminate is, for example, a binder-bonded nonwoven fabric, a hydroentangled nonwoven fabric, a needle-punched nonwoven fabric, a fiber fusion-bonded nonwoven fabric, a melt-blown nonwoven fabric, a spunbonded nonwoven fabric, or a combination of plural types of paper alone or as appropriate. It is made by pleating a fiber material such as a material. The filtering material may be appropriately subjected to post-processing such as electret processing, depending on the use and use state of the unit-replaceable filter device and the required filtering performance. Further, a deodorizing agent, for example, granular activated carbon or the like may be supported on the filtering material 115 to obtain a filtering material having a deodorizing effect.
[0015]
Examples of the fibers constituting the filtering material include regenerated fibers such as rayon, semi-synthetic fibers such as acetate, nylon fibers, vinylon fibers, vinylidene fibers, polyvinyl chloride fibers, polyester fibers, acrylic fibers, polyethylene fibers, polypropylene fibers, and polyclar. Synthetic fibers such as fibers, vegetable fibers such as cotton, animal fibers such as wool, or a combination of two or more resins in a fiber cross section in a core-sheath shape, bonded shape, sea-island shape, multiple bimetallic shapes, orange shape, etc. One or more types of composite fibers having heat-fusing property, crimping property, or splitting property can be used.
[0016]
As the pleating method of the filter medium 115, a conventionally known method such as a method using a pleating machine such as a reciprocating type or a rotary type, and a method of pressing with a pressing die formed in a zigzag shape can be used.
[0017]
The height of the folds of the pleated filter medium 115 and the interval between adjacent folds are arbitrary, but the height of the folds is about 10 to 250 mm and the interval between adjacent folds is about 2 mm to 10 mm. Is preferred. Adjacent folds do not adhere to each other due to wind pressure, for example, by applying a hot melt resin continuously or intermittently to a part (for example, both ends or a center part in the folding line direction) of the folded filtering material. It is good to do. In addition to the filter material simply folded in a zigzag shape, a filter material folded in a zigzag shape and further folded in a W shape can be used.
[0018]
The width and the height in the folding line direction of the filter medium 115 are arbitrary, and may be determined as appropriate according to the use and use state of the unit-replaceable filter device and the required filtration performance.
[0019]
1 and 2, two filter media 115 are stacked in the direction of the fold line of the filter media 115, and the end faces 115a overlapping in the direction of the fold line of each of the filter media 115 are connected to the reinforcing plate 117. By laminating through the above, a laminated body is configured.
[0020]
The height of the filter unit 113 (laminate) in the folding line direction is preferably in the range of 610 to 1830 mm. That is, when the height of the filter unit 113 (laminated body) in the fold line direction is less than 610 mm, even if the filter media 115 are not stacked in the fold line direction and integrated through the reinforcing plate 117, If the filter material has a height of less than 610 mm, the filter material itself has sufficient shape retention properties. For example, even if the pressure loss exceeds about 300 Pa, the pleated shape of the filter material is hardly deformed, and air leaks are prevented. There is almost no risk of causing the technical problem of occurrence. On the other hand, if the height of the filter unit 113 (laminate) in the folding line direction exceeds 1830 mm, the shape retention property that can withstand the pressure loss applied to the entire filter unit 113 (laminate) is insufficient. This is because when the pressure loss applied to the whole exceeds about 300 Pa, the pleated shape of the filter medium may be deformed, and air leak may occur.
[0021]
Further, the width of the filtration surface of the filter unit 113 (laminate) is preferably 300 to 800 mm, more preferably 500 to 700 mm, and specifically, a filter having a width of 610 mm can be used frequently.
[0022]
The reinforcing plate 117 interposed between the end surfaces 115a of the filtering media 115 stacked in the folding direction in the folding direction described above is a plate having a function of improving the shape retention of the filtering media 115. The material is not particularly limited, and a material having high rigidity and being difficult to bend, such as a metal plate such as iron or aluminum, a resin plate such as ABS, AS, or polycarbonate, or a composite plate thereof, is preferable. Among them, the resin plate is preferable from the viewpoint of easy disposal.
[0023]
The form of joining and integrating the reinforcing plate 117 and the filter medium 115 is not particularly limited. In the embodiment shown in FIGS. 1 and 2, both end surfaces 115a and 115b in the folding line direction of each filter medium 115 are respectively impregnated with an adhesive such as a hot melt resin, a urethane resin, or an epoxy adhesive into a nonwoven fabric or paper. Alternatively, a coated reinforcing sheet 114 is adhered, and among these reinforcing sheets 114, a reinforcing plate 117 is sandwiched between the reinforcing sheets 114 on the end face 115 a that overlaps in the folding line direction of the stacked filter media 115, and joined to form an integrated body. By doing so, the reinforcing plate 117 and the filter material 115 are integrated.
[0024]
The filter unit 113 (laminated body) has the reinforcing plate 117 by interposing and integrating the reinforcing plates 117 between the end surfaces 115a of the filtering media 115 stacked in the folding line direction and overlapping in the folding line direction. The rigidity improves the shape retention, so that, for example, even if the pressure loss applied to the entire laminate exceeds about 300 Pa, the pleated shape of the filter medium 115 is not easily deformed.
[0025]
As shown in FIGS. 1 and 2, the end face in the stacking direction of the filter medium 115 of the filter unit 113 (laminated body) (the reinforcing sheet 114 of the end face 115 b which is not polymerized in the folding line direction of the filter medium 115) will be described later. One piece 112a of the frame 112 is cut off and joined, and the one piece 112a is configured to be integral with the frame 112 when the filter unit 113 is stored in the frame 112.
[0026]
The joining of one piece 112a of the frame 112 may be performed by a conventionally known method such as a closed cell type hot melt resin mixed with a hot melt resin or gas and foamed about 2 to 4 times, urethane, an epoxy adhesive, or the like. It can be done by a method.
[0027]
Also, one piece 112a of the frame 112 can be joined to the side surface (the end surface 115c in the width direction of the filtering material 115) of the filter unit 113 (laminated body). In this case, since the filter unit 113 can be pulled out from the frame 112 in the horizontal direction, a unit exchange type filter device in which such a filter unit 113 is accommodated in the frame 112 is used, for example, as shown in FIG. In the case where the filter unit 1 is applied to the filter system 1, there is no need to pull out each unit replaceable filter device from the line of the unit replaceable filter device group of the filter system 1 along the rail 2 in the horizontal direction. Only the filter unit needs to be extracted directly from the frame in the horizontal direction from the line of the unit exchange type filter device group of the system 1 and replaced, and the replacement operation can be performed more efficiently.
[0028]
The form shown in FIG. 3 is the end face in the stacking direction of the filter medium 115 of the filter unit 113 (laminated body) (the reinforcing sheet 114 of the end face 115b which is not polymerized in the folding line direction of the filter medium 115), and one piece 112a of the frame is formed. The reinforcing plate 117 is joined to an end surface that is not joined.
[0029]
In this case, the reinforcing plate 117 interposed between the end surfaces 115a of the filter members 115 (laminated body) stacked in the folding line direction and overlapping in the folding line direction, and the filtering material of the filter unit 113 (laminated body) Since the reinforcement unit 117 is reinforced by the reinforcing plate 117 joined to the end surface 115b of the frame 115, which is the end surface in the stacking direction, and to which the piece 112a of the frame is not joined, the filter unit 113 (laminate) is formed of the two reinforcing plates 117. Due to the stiffness, the shape retention is further improved, and the pleated shape of the filter medium 115 is more effectively prevented from being deformed.
[0030]
As shown in FIGS. 1 and 4, the frame 112 in which the above-described filter unit 113 is detachably housed includes a plate 112 a formed of a flat upper plate, a bottom plate 112 b formed in a U-shaped cross section, and a pair of side plates. The bottom plate 112b and a pair of side plates 112c erected from both ends of the bottom plate 112b constitute a storage section for storing the filter unit 113. The material of the frame 112 is preferably a metal such as aluminum, and the material of the piece 112a of the frame 112 is preferably a flammable material such as an ABS resin.
[0031]
The width of the frame 112 in the depth direction is desirably 20 to 260 mm so as to conform to the preferable height of the fold of the filter medium 115 of 10 to 250 mm. In particular, the upper plate of the frame 112 is configured to have a size such that the one piece 112a can be gripped by one hand, for example, a width of 50 to 80 mm, corresponding to the one piece 112a bonded to the non-polymerized end face 115b of the laminated body of the filter unit 113. Is preferred.
[0032]
The piece 112a and the pair of side plates 112c, and the bottom plate 112b and the pair of side plates 112c, which are joined to the non-polymerized end surface 115b of the stacked body of the filter unit 113, and the bottom plate 112b and the pair of side plates 112c each have a 45 ° abutting shape at an end connecting portion. . The bottom plate 112b and the pair of side plates 112c are connected by a connecting member 118 having an L-shaped cross section. Also, on the inner surfaces of the pair of side plates 112c, 112c, projecting pieces 112d are respectively provided over the entire mounting direction of the filter unit 113, and a fitting portion Y into which the connecting tool 118 is fitted is formed by these projecting pieces 112d. I have.
[0033]
Further, as can be understood from FIG. 1, a similar protruding piece is also provided on the inner surface of the bottom plate 112b to form a similar fitting portion Y, and the other side of the connector 118 is fitted to the bottom plate 112b and the side plate 112c. And are assembled.
[0034]
Reinforcing bars 112e are fixed to the upstream and downstream sides of the side plate 112c of the frame 112 so as to straddle between the side plates 112c, respectively. Is measured.
[0035]
The rivet 112f for fixing the reinforcing rod 112e between the side plates 112c has a tip portion protruding into the inner surface of the frame 112, that is, the inner surface of the side plate 112c. Therefore, when the filter unit 113 is mounted as it is, the tip of the rivet 112f comes into contact with the filter unit 113, and the filter unit 113 is scratched in the mounting direction, which causes an air leak. There is a possibility that such a problem may occur.
[0036]
In order to prevent such a situation from occurring, in this unit replacement type filter device 111, the regulating plate 116 for regulating the mounting direction of the filter unit 113 is provided with an upstream end and a downstream end of the inner surface of each side plate 112c. The unit 113 is provided over the entire mounting direction.
[0037]
For this reason, the filter unit 113 is mounted along the regulation plates 116 while being regulated by the regulation plates 116 provided at the upstream end and the downstream end of the inner surface of each side plate 112c. .
[0038]
As a result, the leading end of the rivet 112f protruding from the inner surface of each side plate 112c is covered by the regulating plate 116, and the filter unit 113 does not come into direct contact with the filter unit 113 when it is mounted.
[0039]
The restriction plates 116 are provided so that the range of restriction regulated by them is equal to or slightly larger than the outer dimension of the filter unit 13 (specifically, the outer dimension of the laminated body 114).
[0040]
As shown in FIG. 5, the frame 112 is provided with regulating plates 116a for regulating the mounting direction of the filter unit at the upstream end and the downstream end of the inner surface of each side plate 112c. And a second regulating plate 116b is provided in the depth direction so as to connect the upstream regulating plate 116a and the downstream regulating plate 116a, all over the mounting direction of the filter unit 113. You can also.
[0041]
In this case, the filter unit is mounted along the control plates 116a and 116b while being controlled by the control plates 116a and 116b, and the leading end of the rivet 112f protruding from the inner surface of each side plate 112c is formed. Therefore, the control plates 116a and 116b are surely covered by the control plates 116a and 116b, so that the unit 113 does not come into direct contact with the mounting plate.
[0042]
In this case, when the depth of the frame 112 is increased, the rib 116c can be provided on the side surface of the side plate 112c of the restricting plate 116b to reinforce the restricting plate 116b.
[0043]
The above-described frame 112 is merely an example, and the outer shape, height, and the like of the frame 112 are determined by the shape and outer dimensions of the filter unit 113, the use and use state of the unit-replaceable filter device, and required filtration. It may be appropriately determined in consideration of the size of the function and the like.
[0044]
The present invention is not limited to the example shown above. For example, five filter media are stacked in the direction of the fold line, and the end faces of the respective filter media overlapping in the direction of the fold line are integrated via a reinforcing plate. The filter unit can be freely changed within a range described in the claims, for example, a filter unit is configured by the formed laminated body.
[0045]
【The invention's effect】
As described above, in the first invention and the second invention, at least two pleated filter media are stacked in the fold line direction, and end faces of the respective filter media that overlap in the fold line direction are interposed via a reinforcing plate. One piece of the frame is cut off and joined to the side face of the laminate or the end face in the stacking direction of the filter medium, and when the filter unit is stored in the frame, the piece is Since the filter unit is configured to be integrated with the frame, and the filter unit is a unit-exchangeable filter device in which the filter unit is detachably housed in the frame, the height of the filter unit in the folding line direction is reduced. Even if the pressure loss exceeds 610 mm, the filtering material is hardly deformed, and is excellent in maintenance.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a filter unit replacement type of the present invention.
FIG. 2 is a perspective view showing a filter unit of the present invention.
FIG. 3 is a perspective view showing another example of the filter unit of the present invention.
FIG. 4 is a perspective view showing a frame portion in the unit-exchangeable filter device of the present invention.
FIG. 5 is a perspective view showing another example of a frame portion in the unit-exchangeable filter device of the present invention.
FIG. 6 is a perspective view showing a conventional unit exchange type filter device.
FIG. 7 is a perspective view showing a filter system constituted by a conventional unit-exchangeable filter device group.
[Explanation of symbols]
112 ... frame 112a ... top plate 112b ... bottom plate 112c ... side plate 113 ... filter unit 115 ... filter material 116 ... regulating plate 117 ... reinforcing plate

Claims (5)

A filter unit removably housed in a frame of a unit exchange type filter device,
A laminate in which at least two pleated filter media are stacked in the fold line direction, and end faces of the respective filter media overlapping in the fold line direction are integrated via a reinforcing plate,
A piece of the frame is cut off and joined to the side surface of the laminate or the stacking direction end face of the filter material of the laminate, and when the filter unit is stored in the frame, the piece is integrally formed with the frame. A filter unit characterized by being constituted so that it becomes. 2. The filter unit according to claim 1, wherein a reinforcing plate is joined to an end surface of the laminated body in the stacking direction of the filter medium, where the one piece of the frame is not joined. The filter unit according to claim 1, wherein a height of the laminate in a folding line direction is 610 to 1830 mm. A unit replacement type filter device in which the filter unit according to claim 1 is detachably stored in a frame. The unit replacement type filter device according to claim 4, wherein a regulating plate for regulating a mounting direction of the filter unit is provided in the frame.

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