JP2008134007A - Filter device and its installation method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter device and its installation method capable of installing the filter device used as a blow-off filter and the like installed on a ceiling and a wall of a clean room without taking much labor-hour in installation work while improving working efficiency. <P>SOLUTION: This filter device 10 comprises a filter unit 40 composed of a filter element 30 and a filter frame 20, and a duct 60 connected with the filter unit 40, the filter frame 20 is formed by connecting frame pieces 21 formed by extrusion molding, and has a mounting structure 50 for detachably mounting the filter element 30, and a face of a side wall 22a of a connecting portion 20a of the filter frame 20 and a face of a wall 61 of a connecting portion of the duct 60 are connected in a state of being overlapped to each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a filter device suitably used for a blowout (or supply) filter or a suction (or exhaust) filter installed on a ceiling or wall of a clean room or the like, and a method for installing the filter device.

  Conventionally, in a room where high cleanliness is required, a blowout port (or a suction port) is used so that clean air from which dust has been removed by a pretreatment filter device is blown out (or sucked in) from the ceiling or the like of the room. In order to further improve the cleanliness of the air, a blowout (or suction) filter unit incorporating a high-performance filter element is installed at the blowout port (or suction port). The filter unit is connected to a duct, and the duct is further connected to a blower.

  The aforementioned filter unit is usually formed into a box shape by sheet metal processing, the function to install and incorporate the filter element, the function to provide a large space above the filter element, to evenly distribute the air flow, and to connect to the duct It has the function as a relay member so that the flange for doing can be provided in the designated place. As such a filter unit, for example, as shown in FIG. 10, there is a filter unit 105 described in the air blowing device of Patent Document 1. FIG. 10 is a front sectional view showing the filter unit 105 installed on the ceiling surface 104 d of the clean room 104. The filter unit 105 includes a box-shaped main body formed of a metal plate. A duct connection port 105b connected to an intake duct (not shown) is formed on one side of the upper portion, and an intake air amount is set in the duct connection port 105b. A volume damper 105c to be adjusted is provided. Further, the filter unit 105 has a high performance filter 105a attached to the downstream side of the volume damper 105c, so that all air flowing into the filter unit 105 passes through the high performance filter 105a and is supplied into the clean room 104. It is configured.

  As described above, a duct connection port 105b connected to an air intake duct (not shown) is formed on one side of the upper part of the box-shaped main body of the filter unit 105. This duct connection port 105b is apparent from FIG. Further, one side of the upper part of the main body is formed in a flange shape, and a flange for a duct joined to the flange is shown. In other words, a duct perpendicular to the surface of the wall on one side of the upper part of the main body and a flange for the duct joined at this surface are shown.

  However, when such an air blowing device is to be installed, the manufacturer of the filter unit 105 and the supplier of the duct piping decide the size of the flange and the position of the space in which the flange is arranged by a meeting before installation. It is necessary to keep. Therefore, every time it takes time for a meeting or when the position of duct piping or flange is changed, one of the contractors will be forced to change the specifications, and the delivery date will be marginal due to the circumstances of the other contractor. There was a problem that work efficiency was extremely deteriorated.

  Moreover, as another example of the above-described filter unit, for example, as shown in FIG. The clean air blowing device 201 includes a casing 202 and an air filter unit 203 attached to the casing 202. In this example, a duct 204 is connected to the casing 202. The air filter unit 203 includes an air filter 205 and a filter mounting frame 206 surrounding the air filter 205. The casing 202 includes a ceiling plate 207 that forms a ceiling portion, and a side plate 209 that hangs from the periphery and forms a space portion 208 in the casing. An opening is formed below the side plate 209. Further, a lower surface portion 210 that is bent in the horizontal direction and a flange portion 211 that rises substantially vertically upward from the lower surface portion 210 are formed at the lower end of the side plate 209. An opening 212 is formed in a part of the side plate 209. The duct 204 is connected to the side plate 209 on the side where the opening 212 is provided. The duct 204 and the side plate 209 of the casing 202 are connected by a pop nut 232a and a screw 232b installed between the duct connection flange 213 and the side plate 209 side. Further, as indicated by a dotted line in FIG. 11, a fan 214 may be provided on the upstream side of the casing 202 instead of the duct 204.

  As described above, the clean air blowing device of Patent Document 2 is divided into the casing 202 and the air filter unit 203 attached to the casing 202, and there is an advantage that it can be easily mounted and divided. However, the problem similar to the air blowing device of patent document 1 is unsolved. That is, when such a clean air blowing device is to be installed, the manufacturer of the casing 202 and the air filter unit 203 and the supplier of the duct piping set the size of the flange and the position of the space in which the flange is disposed. It is necessary to negotiate before meeting. Therefore, every time it takes time for a meeting or when the position of duct piping or flange is changed, one of the contractors will be forced to change the specifications, and the delivery date will be marginal due to the circumstances of the other contractor. There was a problem that work efficiency was extremely deteriorated.

Japanese Patent Laid-Open No. 10-185289 Japanese Patent Laid-Open No. 11-141942

  The present invention solves the above-described problem and installs a filter device used for a blowout (or supply) filter or a suction (or exhaust) filter installed on a ceiling or wall of a clean room or the like. It is an object of the present invention to provide a filter device and an installation method of the filter device that can improve work efficiency without requiring labor.

  In the invention according to claim 1, the means for solving the above-mentioned problem is a filter device 10 attached to a ceiling 80 or a wall 81 as illustrated in FIGS. 1 to 4, and the filter device 10 is a filter. A filter unit 40 including an element 30 and a filter frame 20 for mounting the filter element 30; and a duct 60 connected to the filter unit 40. The filter frame 20 includes a frame piece 21 formed by extrusion molding. The filter frame 20 has a mounting structure 50 for detachably attaching the filter element 30, the surface of the side wall 22 a of the connecting portion 20 a of the filter frame 20, and the duct 60. The filter device 1 is characterized by being connected so as to overlap with the surface of the wall 61 of the connecting portion of It is. According to the first aspect of the present invention, when installing a filter device on a ceiling or wall of a clean room or the like, a contractor who manufactures a filter unit on the basis of the dimension of the filter element and the position of the filter element and duct piping that are extremely small in design change It is possible to proceed with the work in parallel with each other. Therefore, the installation work is not time-consuming and the work period can be shortened. As a result, the work efficiency can be improved.

In the invention according to claim 2, as illustrated in FIG. 1B, the upstream opening dimension L ₂₂ formed by being surrounded by the side wall _{22 a} is substantially the same as the opening dimension L ₃₀ of the filter element 30. It is a dimension, It is the filter apparatus 10 of Claim 1 characterized by the above-mentioned. According to the invention of claim 2, it is possible to reduce the mass of the material of the frame piece 21 by extrusion molding, and it is possible to reduce cost and weight. Moreover, since weight reduction is attained, there exists an advantage that the work efficiency of installation of a filter unit can be improved. Moreover, there exists an advantage that air can be made easier to flow.

In the invention according to claim 3, as illustrated in FIG. 3, the height H ₂₂ of the side wall 22 a of the connection portion 20 a of the filter frame 20 is lower than the height H ₃₀ of the filter element 30. It is the filter apparatus 10 of Claim 1 or 2. According to the third aspect of the invention, the mass of the material of the filter frame 20 can be reduced, and the cost and weight can be reduced. Moreover, since weight reduction is attained, there exists an advantage that the work efficiency of installation of a filter unit can be improved.

  In the invention according to claim 4, as illustrated in FIG. 8 or FIG. 9, the mounting structure 50 presses the filter element 30 having the holding frame 31 having the recess 33 formed on the side surface against the filter frame 20. 51, the filter frame 20 includes a receiving portion 26 that receives the filter element 30, and a support portion 25 that rotatably supports the shaft member 54, and the pressing member 51 includes the concave portion. 33, and a first screw 52 provided with a screw portion having the same axis as the rotation axis of the insertion portion 51a. The shaft member 54 or the support portion 25 includes A second screw 53 provided with a screw portion that engages (or meshes) with the first screw 52, the second screw 53 and the first screw 52 being screwed (or meshed); and By rotating the shaft member 54 while being supported by the support portion 25, the pressing member 51 is rotated so that the insertion portion 51a is inserted into the concave portion 33 and the insertion portion 51a is moved in the direction of the rotation axis. Next, the insertion portion 51a is brought into contact with the contact portion 36 of the concave portion 33 and the insertion portion 51a presses the contact portion 36 so that the contact is made between the insertion portion 51a and the receiving portion 26. The filter device 10 according to claim 1, wherein the filter device 10 is a mounting structure 50 that sandwiches the portion 36. According to the fourth aspect of the present invention, there is no need to use a large and large cover member 70 as shown in FIGS. 1 to 4, and the filter element 30 is provided on the indoor side to prevent damage to the surface of the filter element. It is possible to substitute the face guard 35 as it is. Therefore, when connecting the duct 60 made of a thin material and the filter unit 40, there is no heavy burden on the material of the duct 60, and durability such as reliably preventing deterioration of the connection part due to vibration or the like, for example. There is an advantage that it can have sex.

  In the invention according to claim 5, as illustrated in FIGS. 1 to 4, the filter unit 40 is used in the filter device 10 attached to the ceiling 80 or the wall 81. The filter unit 40 includes the filter element 30 and the filter. The filter frame 20 for attaching the element 30 is formed by connecting the frame pieces 21 by extrusion molding, and the filter frame 20 is mounted for detachably attaching the filter element 30. The structure 50 has a structure in which the surface of the side wall 22a of the connection portion 20a of the filter frame 20 and the surface of the wall 61 of the duct 60 can be overlapped and connected. The filter device 10 is formed by connecting 22 a to the duct 60. It is a Tsu door 40. According to the invention according to claim 5, when installing the filter device on the ceiling or wall of a clean room or the like, the manufacturer and the duct pipe for manufacturing the filter unit on the basis of the dimension of the filter element and the position of the filter element that are extremely small in design change Thus, it is possible to work in parallel with each other, so that installation work is not required and work efficiency can be improved.

  In the invention according to claim 6, as illustrated in FIGS. 1 to 4, a step of attaching the filter frame 20 to the ceiling 80 or the wall 81, a step of connecting a duct 60 to the filter frame 20, and the filter frame 20 The filter frame 20 is formed by connecting a frame piece 21 formed by extrusion molding, and the filter frame 20 is formed by connecting the filter element 30 to the filter element 30. A filter having a mounting structure 50 for detachably mounting, wherein the surface of the side wall 22a of the connecting portion 20a of the filter frame 20 and the surface of the wall 61 of the duct 60 are overlapped and connected. The installation method of the apparatus 10. According to the sixth aspect of the present invention, when installing a filter device on a ceiling or wall of a clean room or the like, a contractor who manufactures a filter unit based on the dimensions of the filter element and the position of the filter element, and duct piping, which require very little design change It is possible to proceed with the work in parallel with each other. Therefore, the installation work is not time-consuming and the work period can be shortened. As a result, the work efficiency can be improved.

  According to the present invention, when installing a filter device used for a blowout (or supply) filter or a suction (or exhaust) filter installed on a ceiling or wall of a clean room or the like, installation work is not time-consuming. Thus, it is possible to provide a filter device and a filter device installation method capable of improving the working efficiency.

  Hereinafter, preferred embodiments of the filter device and the installation method of the filter device according to the present invention will be described in detail. In addition, description of the installation method of a filter apparatus is demonstrated in description of a filter apparatus.

  The present invention is a filter device used for a blowout (or air supply) filter or a suction (or exhaust) filter installed on a ceiling or wall of a clean room or the like, and particularly does not take time for installation work. The present invention relates to a filter device that is suitable when it is required to improve work efficiency, and a method for installing such a filter device.

  As illustrated in FIG. 1 or FIG. 4, the filter device of the present invention is a filter device 10 attached to a ceiling 80 or a wall 81 such as a clean room. The filter device 10 is connected to the filter unit 40 and the filter unit 40. And a connected duct 60. The filter unit 40 includes a filter element 30 and a filter frame 20 for attaching the filter element 30.

  As illustrated in FIG. 2, the filter frame 20 is formed by connecting frame pieces 21 formed by extrusion. The frame piece 21 by extrusion molding is a member having a cross section formed in the same shape by extrusion molding, for example, a metal such as aluminum, iron, or stainless steel. By combining these members, the frame piece 21 and the filter frame 20 of the filter element 30 are combined. As shown in the figure, it has a plurality of concave and convex portions and protrusions, has a shape in which a connector and components can be mounted, and a shape in which the filter element 30 can be attached. As a material, a light metal such as aluminum or an alloy thereof is preferable because it is light, high in strength, and easy to process. Moreover, since the cross-sectional shape can be freely selected as necessary, for example, by thickening the corners by extrusion, the filter frame 20 can have a sturdy structure. Therefore, unlike the prior art, it is not necessary to form the filter frame into a box shape by sheet metal processing. In the present invention, even if a duct 60 made of a relatively thin material is connected to the filter frame 20, the filter device 10 The overall strength can be maintained. The space inside the duct 60 can have a function of uniformly dispersing the airflow.

  The specific shape of the frame piece 21 includes, for example, the shapes illustrated in FIGS. 1 to 3. In this example, the frame pieces 21 a and 21 b have grooves for inserting connectors as shown in FIG. 2. 8 L-shaped connectors 23a and 23b are inserted into the grooves, and these connectors 23a and 23b are fixed to the four frame pieces 21a and 21b with bolts. . Thus, each frame piece 21 is connected by each connector, and the filter frame 20 is formed.

  In the present invention, as illustrated in FIG. 1C, the surface of the side wall 22 a of the connection portion 20 a of the filter frame 20 and the surface of the wall 61 of the connection portion of the duct 60 are connected so as to overlap each other. . Here, the connection portion 20a of the filter frame 20 refers to a connection portion to the duct, and is a portion provided for connection to the duct adjacent to the portion 20b that houses the filter element 30. Further, when this section is viewed in cross section, the tip portion is bent into an L shape, and functions to reinforce the filter frame 20. Moreover, the connection part of the duct 60 refers to the connection part to the filter frame 20, and is preferably a part near the tip of the duct 60. In this way, the surface of the side wall 22a of the connecting portion 20a and the surface of the wall 61 of the connecting portion of the duct 60 are connected so as to overlap each other.

  The surface of the side wall 22a of the connecting portion 20a of the filter frame 20 and the surface of the wall 61 of the connecting portion of the duct 60 are connected so as to overlap each other. Alternatively, after the duct 60 is previously installed so as to be suspended from a building structure (for example, a slab) further above the wall 81, the connection portion of the filter frame 20 is slid into the opening of the duct 60. Thus, the surface of the side wall 22a and the surface of the wall 61 of the connecting portion of the duct 60 are overlapped. Next, there is a method in which the screw 62 is screwed from the inner side (air passage side) surface of the side wall 22a of the filter frame toward the surface of the wall 61 of the connecting portion of the duct 60 and connected using this screw 62. In addition, in order to connect using the screw 62, a person enters the back of the ceiling or the back of the wall, and the screw 62 is inserted from the surface of the wall 61 of the connection portion of the duct 60 to the inside (air passage side) of the side wall 22a of the filter frame. A method of screwing toward the surface is also possible. However, as long as screws can be fixed from the inside of the filter frame, a method of connecting the filter frame 20 and the duct 60 using the screws 62 from the inner side (air passage side) side wall 22a of the former filter frame. However, it is preferable from the viewpoint of work effort and work efficiency.

  In order to ensure the sealing of the connecting portion described above, as illustrated in FIG. 5A, the tip portion of the side wall 22a of the connecting portion 20a of the filter frame 20 and the wall 61 of the connecting portion of the duct 60 are provided. It is also possible to provide the seal portion 63 by caulking with a resin centering on the portion where the contact is made. Further, as illustrated in FIG. 5B, a configuration in which the connection portion is covered with the tape material 64 so that the head portion of the screw 62 is covered is also preferable. In this case, it is necessary to perform an operation in which a person enters the back of the ceiling or the back of the wall and affixes the tape material 64 to the connection portion.

  Further, in the present invention, in order to improve the durability of the connection portion between the filter frame 20 and the duct 60, the filter frame 20 is further above the indoor ceiling 80 or the wall 81 as illustrated in FIG. It is also preferable that it is fixed so as to be suspended from a building structure (for example, a slab). In FIG. 6A, a groove for inserting the connection fitting 82 is provided on the side wall 22b of the portion 20b of the filter frame 20 that houses the filter element 30, and the connection fitting 82 is inserted into this groove. The connection fitting 82 is further supported by a long bolt 83 suspended from a building structure (for example, a slab).

  Further, in the present invention, in order to improve the durability of the connection portion between the filter frame 20 and the duct 60, it is also preferable that the filter frame 20 is fixed to the indoor ceiling 80 as illustrated in FIG. . In FIG. 6B, a groove for inserting the connection fitting 82 is provided in the side wall 22b of the portion 20b that houses the filter element 30 in the filter frame 20, and the connection fitting 82 is inserted into this groove. . And the board which comprises the indoor ceiling 80 between the front-end | tip of the volt | bolt 84 attached to the connection metal fitting 82, and the edge part 20c provided so that this connection metal fitting 82 may be opposed to the side wall 22b of a filter frame. The filter frame 20 is fixed to the indoor ceiling 80 so as to be sandwiched between the aggregates 85. Further, an aggregate 86 is provided on the indoor ceiling 80, and a suspension fitting 87 connected to a long bolt 83 suspended from a building structure (for example, a slab) is wound around the aggregate 86. The indoor ceiling 80 is installed so as to be suspended from a building structure (for example, a slab).

  In the present invention, the filter element is not particularly limited as long as it can be attached to a filter frame having a mounting structure for detachably attaching the filter element. However, as illustrated in FIG. 1 or FIG. The element 30 preferably includes a filter medium 34 and a holding frame 31 that holds the filter medium 34. As a specific example of the form of the holding frame 31, it is desirable that the frame material by extrusion molding is connected to be formed in the same manner as the filter frame 20. In the example of FIG. 3, the frame member can be connected by inserting a bolt into a connecting groove 37 provided in the frame member. As a material, light metal such as aluminum or an alloy thereof is preferable because it is light, high in strength, and easy to process. Further, it is desirable that a face guard 35 made of punching metal or the like is provided on the indoor side of the filter element 30 in order to prevent damage to the surface of the filter element 30 or the filter medium 34.

  The filter medium 34 is not particularly limited, and is not only a HEPA filter obtained by pleating a high-performance filter medium made of glass fiber or organic fiber, but also a bulky flat coarse particle in which relatively thick fibers are three-dimensionally oriented. It is also possible to use a filter medium. Moreover, as a specific example of the filter medium made of a nonwoven fabric used for this HEPA filter or medium-high performance filter, for example, 5-50 mass% of ultrafine fibers having an average fiber diameter of 0.1-10 μm produced by a melt blow method, an average There is a filter medium made of a nonwoven fabric in which 50 to 95% by mass of heat-fusible fibers having a fiber diameter of 10 to 100 μm are mixed and the heat-fusible fibers are fused. By using such a filter medium, it is possible to adapt to a high performance filter having a JIS colorimetric efficiency of 90% or more and a medium performance filter having a colorimetric efficiency of 40% or more. The JIS colorimetric efficiency is a value obtained by a test prescribed in JIS B 9908.

Further, in the present invention, as illustrated in FIG. 1B, the upstream opening dimension L ₂₂ formed by being surrounded by the side wall 22 a of the connection portion 20 a of the filter frame 20 is the opening dimension L _{30 of the} filter element. It is preferable that they have substantially the same dimensions. That is, the dimension L _{22 on} one side of the upstream opening formed surrounded by the side wall 22a of the connection part 20a of the filter frame 20 is the opening L of the filter element 30 (in this figure, the filter medium constituting the filter element 30). corresponds to the surface 34. or preferably correspond to the inside of the opening portion of the filter frame 31.) are substantially the same size and dimensions L ₃₀ of the corresponding side of the. “Substantially the same” means that they are substantially the same. Specifically, the difference in length of each side is preferably within 10% of the shorter side, preferably within 5%. Is more preferable, and still more preferably within 2%. Since the upstream opening dimension formed by being surrounded by the side wall 22a is substantially the same as the opening of the filter element, the mass of the material of the frame piece 21 by extrusion molding can be reduced, and the cost can be reduced. And lighter. Moreover, since weight reduction is attained, there exists an advantage that the work efficiency of installation of a filter unit can be improved. Moreover, there exists an advantage that air can be made easier to flow.

In the present invention, as illustrated in FIG. 3, the height H ₂₂ of the side wall 22 a of the connection portion 20 a of the filter frame 20 is preferably lower than the height H ₃₀ of the filter element 30. Specifically, it is preferable that the height _{H 22} of the side wall of the connection portion 20a of the filter frame 20 is 25 to 100% of the height _{H 30} of the filter element 30, and more preferably from 25 to 75% More preferably, it is 25 to 50%. By the height H ₂₂ of the side wall 22a of the connecting portion 20a of the filter frame 20 is lower than the height H ₃₀ of the filter element 30, it is possible to reduce the mass of the material of the filter frame 20, cost and weight Can be realized. Moreover, since weight reduction is attained, there exists an advantage that the work efficiency of installation of a filter unit can be improved.

  In the present invention, as illustrated in FIGS. 1 and 3, the filter frame 20 has a mounting structure 50 for detachably mounting the filter element 30. This mounting structure is not particularly limited as long as the filter element 30 can be detachably attached to the filter frame 20, but preferably has a stop member for fixing the filter element 30. As a specific example thereof, The mounting structure 50 shown to FIG. 1 and FIG. 3 can be mentioned. In FIG. 3, a rectangular metal plate and a metal plate integrated with a socket 56 are prepared as a stop member 55 of the filter element 30, and a long bolt 57 is inserted into the socket. The filter element 30 is detachably attached to the filter frame 20 by fixing one end of the filter member 20 to the filter frame 20 and then abutting one end of the stopper member 55 to the lower end of the filter holding frame 31 and tightening with a nut 58. Can do. When using this mounting structure, a packing 32 made of rubber or the like is provided on the filter holding frame 31 in order to improve the sealing performance between the filter holding frame 31 and the filter holding frame 31 in contact with the filter frame 20. 1 to 3, a metal or resin cover member 70 is attached to the filter frame 20 by bolts 71 in order to prevent the mounting structure portion from being exposed.

  Another example of the mounting structure is the mounting structure 50 shown in FIG. In FIG. 7, as the stop member 55 of the filter element 30, both ends of four rectangular metal plates are formed with bent end portions 55a and other end portions 55b, respectively, and the bent four metal plates are joined together to form 4 It is formed in a square frame shape. The filter frame 20 is provided with a support portion 25, and a socket 56 having a screw portion is attached to the support portion. Next, one end 55a of the stop member 55 is brought into contact with the lower end of the filter holding frame 31, and a bolt 57 having a screw portion that is screwed (or meshed) with the screw portion of the socket is inserted into the stop member 55. The filter element 30 can be detachably attached to the filter frame 20 by screwing the tip of the bolt 57 into the socket 56 and tightening the stop member 55. In FIG. 7, the cover member 70 is attached to the filter frame 20 with bolts 71 in order to prevent the mounting structure portion from being exposed.

  As yet another example of the mounting structure, a mounting structure 50 shown in FIG. 8 can be cited. In FIG. 8, the mounting structure 50 is a structure in which the filter element 30 having the holding frame 31 with the recess 33 formed on the side surface is mounted on the filter frame 20 by the pressing member 51. Specifically, the filter frame 20 includes a receiving portion 26 that receives the filter element 30 and a support portion 25 that rotatably supports the shaft member 54, and the pressing member 51 is an insertion portion 51 a that is inserted into the recess 33. And a first screw 52 provided with a spiral screw portion having the same axis as the rotation axis of the insertion portion 51a. Further, the shaft member 54 includes a second screw 53 provided with a screw portion that is screwed (or meshed) with the first screw 52. Then, the second screw 53 and the first screw 52 are screwed (or meshed), and the shaft member 54 is rotated while being supported by the support portion 25, whereby the pressing member 51 is rotated and inserted. The insertion portion 51a is inserted into the recess 33 and the insertion portion 51a is moved in the direction of the rotation axis of the insertion portion 51a. Then, the insertion portion 51a is brought into contact with the contact portion 36 of the recess 33 and the insertion portion 51a presses the contact portion 36. Thus, the mounting structure 50 is configured such that the contact portion 36 is sandwiched between the insertion portion 51 a and the receiving portion 26.

  More specifically, by pressing the second screw 53 and the first screw 52 and rotating the shaft member 54 while supporting the shaft member 54 with the support portion 25, first, the pressing member 51 provided at the tip of the shaft member 54 is provided. The insertion portion 51 a rotates with the second screw 53 until it enters the recess 33 of the holding frame 31 of the filter element 30 and abuts against the wall of the holding frame 31. When the wall abuts against the wall and no further rotation is possible, the first screw screwed into the second screw only moves upward or downward in the rotational axis direction by the rotation of the second screw.

  With this mounting structure, it is not necessary to use a large and large cover member 70 as shown in FIGS. 1 to 4, and it is usual to prevent damage to the surface of the filter element 30 or the filter medium 34 inside the filter element 30. The provided face guard 35 can be used as it is. Therefore, when connecting the duct 60 made of a thin material and the filter unit 40, there is no heavy burden on the material of the duct 60, and durability such as reliably preventing deterioration of the connection part due to vibration or the like, for example. There is an advantage that it can have sex. Further, since the filter element can be mounted from the indoor side without removing the cover member as in the prior art, there is an advantage that the work efficiency of installing the filter device is improved.

  As yet another example of the mounting structure, a mounting structure 50 shown in FIG. 9 can be cited. In FIG. 9, the mounting structure 50 is a structure in which the filter element 30 having the holding frame 31 with the recess 33 formed on the side surface is mounted on the filter frame 20 by the pressing member 51. Specifically, the filter frame 20 includes a receiving portion 26 that receives the filter element 30 and a support portion 25 that rotatably supports the shaft member 54, and the pressing member 51 is an insertion portion 51 a that is inserted into the recess 33. And a first screw 52 provided with a spiral screw portion having the same axis as the rotation axis of the insertion portion 51a. In addition, the support portion 25 includes a second screw 53 provided with a screw portion that engages (or meshes) with the first screw 52 in a socket 53 ′ attached to the support portion 25. Then, the second screw 53 and the first screw 52 are screwed (or meshed), and the shaft member 54 is rotated while being supported by the support portion 25, whereby the pressing member 51 is rotated and inserted. The insertion portion 51a is inserted into the recess 33 and the insertion portion 51a is moved in the direction of the rotation axis of the insertion portion 51a. Then, the insertion portion 51a is brought into contact with the contact portion 36 of the recess 33 and the insertion portion 51a presses the contact portion 36. Thus, the mounting structure 50 is configured such that the contact portion 36 is sandwiched between the insertion portion 51 a and the receiving portion 26.

  More specifically, the pressing member 51 is slidably integrated with the shaft member 54, and the support portion 25 includes a second screw 53. In this figure, the pressing member 51 is slidably integrated via a shaft member 52 and a lubricating member (in this example, a resin Duracon bushing) 51b provided on the pressing member 51. Specifically, the sliding portion of the pressing member 51 is formed by fitting the Duracon bush 51b inside the socket provided in the pressing member 51, and the sliding portion provided on the shaft at the tip portion of the shaft member 54 is It is slidably integrated as inserted from above. This integration is not fixed, but is an integration that cannot be removed unless a certain amount of weight is applied. A pressing member 51 is pressed against the holding frame 31 of the filter element 30, and a nut 51 c is attached to the shaft member 54 as a member for supporting a reaction force when pressing the contact portion 36.

  In this way, in FIG. 9, by rotating while being supported by the support member 25, the pressing member 51 slidably integrated with the distal end portion of the shaft member 54 is rotated, and the insertion portion 51 a becomes the holding frame. When the pressure member 51 enters the concave portion 33 of the shaft 31 and abuts against the wall of the holding frame 31 and cannot be rotated any more, the pressing member 51 slides at the sliding portion of the tip portion of the shaft member 54 having the first screw 52. On the other hand, the first screw 52 continues to rotate and moves upward or downward in the rotational axis direction, and the pressing member 51 presses against the contact portion 36 of the concave portion 33 of the holding frame 31 of the filter element 30. Will be.

  With this mounting structure, it is not necessary to use a large and large cover member 70 as shown in FIGS. 1 to 4, and it is usual to prevent damage to the surface of the filter element 30 or the filter medium 34 inside the filter element 30. The provided face guard 35 can be used as it is. Therefore, when connecting the duct 60 made of a thin material and the filter unit 40, there is no heavy burden on the material of the duct 60, and durability such as reliably preventing deterioration of the connection part due to vibration or the like, for example. There is an advantage that it can have sex. Further, since the filter element can be mounted from the indoor side without removing the cover member as in the prior art, there is an advantage that the work efficiency of installing the filter device is improved. Further, since the set of parts for the mounting structure can be attached to the filter frame 20 together with the support portion 25, there is an advantage that the working efficiency of assembling the filter device is improved as compared with the structure shown in FIG.

  As shown in FIGS. 1 to 4, the filter device installation method of the present invention includes a step of attaching the filter frame 20 to the ceiling 80 or the wall 81, a step of connecting a duct 60 to the filter frame 20, and the filter. A method of installing the filter device 10 including the step of attaching the filter element 30 to the frame 20, wherein the filter frame 20 is formed by connecting frame pieces 21 by extrusion molding, and the filter frame 20 is attached to and detached from the filter element 30. A mounting structure 50 for freely mounting is provided, and the surface of the side wall 22a of the connecting portion 20a of the filter frame 20 and the surface of the wall 61 of the duct 60 are overlapped and connected. The description of the filter frame 20, the duct 60, and the filter element 30, and the method of connecting the surface of the side wall 22a of the connection portion 20a of the filter frame 20 and the surface of the wall 61 of the duct 60 in an overlapping manner are described above. This is as described in the description of the filter device.

  With the filter device installation method of the present invention, when installing a filter device on a ceiling or wall of a clean room or the like, a manufacturer that manufactures a filter unit based on the dimensions of the filter element and the position of the filter element with very few design changes It is possible to work in parallel with contractors who perform duct piping. Therefore, the installation work is not time-consuming and the work period can be shortened. As a result, the work efficiency can be improved. For example, it is possible to connect by simply setting the fixing position while installing the filter unit after duct piping and sliding the filter frame side wall and the duct wall in an overlapping manner.

It is an example which installed the filter apparatus of this invention in the indoor ceiling, (a) is a top view, (b) is a side view, (c) is an enlarged view of A part of (a). It is a principal part enlarged view of an example of the filter apparatus of this invention. (A) is an enlarged view of a main part of the filter frame 20, (b) is a sectional view of the filter frame 20, and (c) is a plan view of a connector used for the filter frame 20. It is principal part sectional drawing of an example of the filter apparatus of this invention. It is an example which installed the filter apparatus of this invention in the wall, (a) is a top view, (b) is a side view, (c) is an enlarged view of B part of (a). It is principal part sectional drawing explaining another connection method of the filter apparatus of this invention. (A) is principal part sectional drawing of a filter apparatus, (b) is principal part sectional drawing of another filter apparatus. It is principal part sectional drawing explaining the installation method of the filter apparatus of this invention. (A) is principal part sectional drawing of a filter apparatus, (b) is principal part sectional drawing of another filter apparatus. It is sectional drawing explaining another mounting structure of the filter apparatus of this invention. It is a figure explaining another mounting structure of the filter apparatus of this invention. (A) is sectional drawing, (b) is component drawing. It is a figure explaining another mounting structure of the filter apparatus of this invention. (A) is sectional drawing, (b) is component drawing. It is an example of the conventional filter apparatus. It is another example of the conventional filter apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Filter apparatus 20 Filter frame 20a Connection part 20b The part 20c which accommodates a filter element End part 21, 21a, 21b of a filter frame 22a Side wall 22b Side wall 23, 23a, 23b Connector 25 Support part 26 Receiving part 30 Filter element 31 Holding frame 32 Packing 33 Recess 34 Filter medium 35 Face guard 36 Contact portion 37 Connection groove 40 Filter unit 50 Mounting structure 51 Press member 51a Insertion portion 51b Lubricating member, Duracon bush 51c Nut 52 First screw 53 Second screw 53 'Socket 54 Shaft member 55 Stop member 55a Bend end 55b Bend other end 56 Socket 57 Long bolt or bolt 58 Nut 60 Duct 61 Connection portion wall 62 Screw 63 Seal portion 64 Tape material 70 Cover member 71 Bolt 80 Ceiling 81 Wall 8 Connection fitting 83 Long bolt 84 Bolt 85 Aggregation 86 Aggregation 87 Suspension fitting 104 Clean room 104d Ceiling surface 105 Filter unit 105a High performance filter 105b Duct connection port 105c Volume damper 201 Clean air blowing device 202 Casing 203 Air filter unit 204 Duct 205 Air Filter 206 Filter mounting frame 207 Ceiling plate 208 Space portion 209 Side plate 210 Lower surface portion 211 Flange portion 212 Open port 213 Connection flange 214 Fan 232a Pop nut 232b Screw

Claims (6)

  A filter device attached to a ceiling or a wall, the filter device comprising a filter unit comprising a filter element and a filter frame for attaching the filter element, and a duct connected to the filter unit, The filter frame is formed by connecting frame pieces formed by extrusion, and the filter frame has a mounting structure for detachably attaching the filter element, and a surface of a side wall of a connection portion of the filter frame; The filter device is characterized in that it is connected so as to overlap with the wall surface of the connecting portion of the duct.   2. The filter device according to claim 1, wherein an upstream opening dimension formed by being surrounded by the side wall is substantially the same as an opening dimension of the filter element.   The filter device according to claim 1 or 2, wherein a height of a side wall of a connection portion of the filter frame is lower than a height of the filter element.   The mounting structure is a structure in which the filter element having a holding frame having a recess formed on a side surface is mounted to the filter frame by a pressing member, and the filter frame rotates a receiving portion and a shaft member that receive the filter element. A support portion that supports the insertion portion, and the pressing member includes an insertion portion that is inserted into the concave portion, and a first screw that is provided with a screw portion having the same axis as the rotation axis of the insertion portion. The shaft member or the support portion includes a second screw provided with a screw portion to be screwed with the first screw, screwing the second screw and the first screw, and By rotating the shaft member while being supported by the support portion, the pressing member is rotated so that the insertion portion is inserted into the recess and the insertion portion is moved in the direction of the rotation axis, and then the insertion portion. The concave The mounting structure is characterized in that the contact portion is sandwiched between the insertion portion and the receiving portion so that the contact portion is brought into contact with the contact portion and the insertion portion presses the contact portion. The filter apparatus in any one of 1-3.   A filter unit used for a filter device attached to a ceiling or a wall, the filter unit comprising a filter element and a filter frame for attaching the filter element, the filter frame being formed by connecting frame pieces by extrusion molding The filter frame has a mounting structure for detachably attaching the filter element, and connects the surface of the side wall of the connecting portion of the filter frame and the surface of the wall of the duct in an overlapping manner. And a filter device is formed by connecting the side wall to the duct.   A method for installing a filter device comprising: attaching a filter frame to a ceiling or wall; connecting a duct to the filter frame; and attaching a filter element to the filter frame, wherein the filter frame is formed by extrusion molding. Frame pieces are connected to each other, and the filter frame has a mounting structure for detachably attaching the filter element, and the surface of the side wall of the connecting portion of the filter frame and the surface of the wall of the duct A method for installing a filter device, characterized in that the filter device is overlapped and connected.

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