JP2007268411A - Mounting structure of filter element to filter unit and filter unit having the structure - Google Patents

Abstract

A filter element mounting structure that can perform a filter element replacement operation accurately, quickly, and easily, and that does not require an extra space for parts to protrude and has an excellent appearance. To provide a filter unit having the structure.
A base body includes a support portion that rotatably supports a shaft member, and a pressing member is provided with an insertion portion that is inserted into a concave portion and a helical screw portion. The first screw 31 is provided, and the shaft member 33 is provided with a second screw 32 provided with a helical screw portion that is screwed with the first screw 31.
[Selection] Figure 2

Description

  The present invention relates to a filter element mounting structure suitably used for a blowout (or supply) filter unit or a suction (or exhaust) filter unit installed on a ceiling or wall of a clean room or the like, and in particular, replacement of the filter element or The present invention relates to a filter element mounting structure that can be attached and detached reliably, quickly and easily, and a filter unit having the structure.

  Conventionally, in a room such as a clean room where high cleanliness is required, a cleansing air from which dust has been removed by a pretreatment filter device is blown out or sucked from the ceiling or the like of the room. In order to further improve the cleanliness of the air, a blow-out or suction filter unit (hereinafter simply referred to as a filter unit) incorporating a high-performance filter element is installed in the blow-off or suction-roof. .

When this high-performance filter element becomes clogged, it is necessary to replace the filter element attached to the filter unit with a new one, and the replacement operation is performed as accurately, quickly and easily as possible. There was a need to be able to. As such a filter unit, various types have been proposed in, for example, Patent Document 1, Patent Document 2, and the filter unit shown in FIG.
Japanese Utility Model Publication No. 62-40434 Japanese Utility Model Publication No. 7-9419

  In Patent Document 1, a mounting structure as shown in FIG. 13 (1) and FIG. 13 (2) is described as a prior art. An attachment structure as shown in FIG. 12 is known. However, in such a mounting structure, since the length of the long bolt 210 screwed into the nut is long, it is difficult to adjust the tightening degree of the nut, and if an imbalance occurs between several nuts, Because it causes, it took time and effort to install. In addition, since the pressing fitting 211 is attached from the blow-off side of the filter element, the nut 212 or the head of the long bolt jumps out from the blow-out port, and there is a problem that an extra space for the pop-out is required or the appearance is poor. there were.

  Further, in the technique of Patent Document 1 improved from this conventional technique, as shown in FIG. 13, a filter frame 214 is attached from the blow-out side of the filter element using a bolt 213 instead of a long bolt. However, in this example, it is necessary to attach the filter frame support 214 having a frame structure instead of the press fittings using the bolts 213. Therefore, it takes time for the installation, and the heads of the nuts and the long bolts 215 are blown from the blower. However, there was a problem of jumping out, and there was a problem that an extra space for jumping out was required and it looked bad.

  In relation to such a blowout filter unit, Patent Document 2 discloses, as shown in FIG. 15, a filter 1 having an outer frame 3 composed of a frame plate 2 having square protrusions 2a on both sides in the longitudinal direction. A fixing device, which is a shaft member 7 erected on the receiving member 5, and an abutting tool attached to the shaft member 7 so as to be rotatable in a direction perpendicular to the shaft member 7 so as to be immersed in the opposing gap 9 of the rectangular protrusion 2 a. 8 and a filter fixing device composed of a fastening member 4 for fastening the patch 8 toward the receiving member 5 is described.

    However, in the filter fixing device disclosed in Patent Document 2, it is a manual work to immerse the abutment 8 into the opposing gap 9 of the rectangular protrusion 2a. It is difficult to apply this fixing device when only a blowout filter unit or a narrow air problem is allowed.

  The present invention solves the above-mentioned problem, and can perform the replacement work of the filter element with high accuracy, speed, and ease, and does not need to secure an extra space for jumping out parts, and also looks good. An object is to provide an excellent filter element mounting structure and a filter unit having the structure.

In order to solve the above problems, first, the means taken by the invention according to claim 1 is:
“A structure in which the filter element 10 having the frame 11 in which the concave portion 12 is formed on the side surface is attached to the base body 20 by the pressing member 30,
The base body 20 includes a support portion 21 that rotatably supports the shaft member 33.
The pressing member 30 includes an insertion portion 30a to be inserted into the recess 12 and a first screw 31 provided with a helical screw portion. The shaft member 33 or the support portion 21 is connected to the first screw 31. A second screw 32 provided with a helical screw portion to be screwed,
The second screw 32 and the first screw 31 are screwed together and the pressing member 30 is rotated by rotating the shaft member 33 while being supported by the support portion 21, so that the insertion portion 30 a is inserted into the recess 12. In addition, the filter element 10 mounting structure is characterized in that the insertion portion 30a of the pressing member 30 is pressed against the frame 11 of the filter element 10 attached to the base 20 ".
It is.

  That is, the invention according to claim 1 relates to a structure in which a filter element 10 having a frame 11 having a recess 12 formed on a side surface is attached to a base 20 by a pressing member 30, as shown in FIG.

  In this case, as shown in FIGS. 2, 4, 5, 6, and 7 (1), the base body 20 rotatably supports a shaft member 33 for a pressing member 30 described later. 21 is provided. Further, as shown in FIGS. 2, 4, 5, and 6, a mounting hole 22 that rotatably supports the lower end of the shaft member 33 is formed below the support portion 21. The mounting hole 22 is formed so that the insertion hole formed in the support portion 21 is aligned with the axis.

  For example, as shown in FIG. 2, the pressing member 30 includes an insertion portion 30 a to be inserted into the recess 12 and a first screw 31 provided with a helical screw portion, and also includes a shaft member 33 or a support portion. 21 includes a second screw 32 provided with a helical thread portion that is screwed into the first screw 31.

  With the configuration as described above, in the filter element 10 mounting structure according to the first aspect of the present invention, the second screw 32 and the first screw 31 are screwed together, and the shaft member 33 is supported by the support portion 21. By rotating the pressing member 30 while being supported by the frame, the insertion portion 30a is inserted into the recess 12 and the insertion portion 30a of the pressing member 30 is attached to the base body 20 in the frame of the filter element 10. 11 will be pressed.

  In other words, the filter element 10 mounting structure allows the filter element replacement operation to be performed accurately, quickly, and easily, and it is not necessary to secure an extra space for projecting parts. Is also excellent.

In order to solve the above problem, the means taken by the invention according to claim 2 is the filter element mounting structure according to claim 1,
“The first screw 31 is a screw hole provided in the pressing member 30, and the screw portion of the second screw 32 screwed into the screw hole is formed on at least a part of the outer peripheral surface of the shaft member 33.
It is.

  That is, in the invention according to claim 2, as shown in FIGS. 2 and 6, the first screw 31 is a screw hole provided in the pressing member 30, and the second screw 32 screwed into the screw hole is used. The thread portion is formed on at least a part of the outer peripheral surface of the shaft member 33.

  Thereby, the insertion portion 30a of the pressing member 30 provided at the tip of the shaft member 33 rotates with the second screw 32 until it enters the recess 12 of the frame 11 and abuts against the frame 11, but the insertion portion 30a is When the frame 11 is brought into contact with the frame 11 and cannot be rotated any more, the first screw 31 screwed into the second screw 32 only moves upward or downward. The same applies when the second screw 32 is rotated in the opposite direction. The second screw 32 is rotated by inserting a tool such as a screwdriver into the lower end exposed from the mounting hole 22 of the base body 20.

  When the shaft member 33 is rotated as described above, the pressing member 30 rotates lightly until the insertion portion 30a enters the recess 12 of the frame 11 and comes into contact with the frame 11, but the insertion portion 30a is rotated by the frame 11. When the shaft member 33 comes into contact with the shaft and cannot be rotated any more, the rotation of the shaft member 33 becomes heavy. That is, when the rotation of the shaft member 33 becomes heavy, this means that the insertion portion 30a of the pressing member 30 has come into contact with the frame 11, and the completion of the fixing operation of the filter element 10 to the base body 20 can be easily performed by further rotating several times. It can be recognized.

  Therefore, in the structure according to the second aspect, in addition to exhibiting the same function as that of the first aspect, the completion of fixing can be easily recognized in the state of the rotation operation of the shaft member 33. . Further, in this structure, when removing the filter element 10, the second screw 32 is rotated to the opposite side when attached, and the insertion portion 30 a of the pressing member 30 is moved to the frame 11 while moving the first screw 31 downward or upward. It can be easily removed by rotating until it comes into contact with the wall of the base body 20 outside the recess 12.

Moreover, in order to solve the said subject, the means which the invention which concerns on Claim 3 took about the mounting structure of the filter element of the said Claim 1,
“The first screw 31 is a bolt 30 b erected and fixed to the pressing member 30, at least a part of the shaft member 33 is hollow, and the hollow peripheral surface is a screw hole as the second screw 32. Being "
It is.

  That is, in the mounting structure according to claim 3, as shown in FIG. 4, contrary to that of claim 2 described above, the first screw 31 is a bolt 30 b erected and fixed to the pressing member 30, and the shaft member 33. At least a part of the hollow part is hollow, and the peripheral surface of the hollow part is a screw hole as the second screw 32.

  As a result, the lower end of the second screw 32 is exposed from the mounting hole 22 of the base body 20 as shown in FIG. The pressing member 30 is directly integrated. Thereby, it is possible to directly sense that the fixed work stop timing comes after the rotation operation of the second screw 32 becomes heavy.

  Therefore, in the structure according to the third aspect, in addition to exhibiting the same function as that of the first aspect, the completion of fixing can be easily recognized in the rotational operation state of the second screw 32 itself. It is. Moreover, in this structure, when removing the filter element 10, it can remove easily by rotating the 2nd screw 32 to the opposite side to the time of mounting | wearing.

Moreover, in order to solve the said subject, the means which the invention which concerns on Claim 4 took about the mounting structure of the filter element of the said Claim 1,
“The pressing member 30 is slidably integrated with the shaft member 33, and the support portion 21 includes the second screw 32.”
It is.

  That is, in the invention according to claim 4, as shown in FIG. 7, the pressing member 30 slides through the shaft member 33 and a lubricating member (in this example, a resin-made duracon bush 35) provided on the pressing member 30. The second screw 32 is formed on the support member 21 so as to be integrated.

  Accordingly, the pressing member 30 is slidably integrated with the tip portion of the shaft member 33 by rotating the shaft member 33 while being supported by the support member 21 via the second screw 32 provided on the support member 21. When the insertion portion 30a enters the recess 12 of the frame 11 and comes into contact with the frame 11 and cannot be rotated any more, the tip portion of the shaft member 33 having the first screw 31 slides. On the other hand, the pressing member 30 slides at the portion, while the first screw 31 continues to rotate and moves upward or downward, and the pressing member 30 is pressed against the frame 11 of the filter element 10.

  When the shaft member 33 is rotated as described above, the pressing member 30 rotates lightly until the insertion portion 30a enters the recess 12 of the frame 11 and comes into contact with the frame 11, but the insertion portion 30a is rotated by the frame 11. If the contact is made and the shaft cannot be rotated any more, the sliding portion of the shaft member 33 slides and the rotation becomes heavy. That is, when the rotation of the shaft member 33 becomes heavy, this means that the insertion portion 30a of the pressing member 30 has come into contact with the frame 11, and by completing several more rotations, the fixing operation of the filter element 10 to the base body 20 is completed. It can be easily recognized.

  Therefore, in the structure according to the fourth aspect, in addition to exhibiting the same function as that of the first aspect, the completion of fixing can be easily recognized in the rotational operation state of the shaft member 33. . Further, in this structure, when removing the filter element 10, the second screw 32 is rotated to the opposite side when attached, and the insertion portion 30 a of the pressing member 30 is moved to the frame 11 while moving the first screw 31 downward or upward. It can be easily removed by rotating until it comes into contact with the wall of the base body 20 outside the recess 12.

Further, in order to solve the above problem, the means taken by the invention according to claim 5 is:
“A filter unit 100 having the mounting structure according to claim 1,
The filter element 10 is mounted on the outer frame of the filter unit as the base 20, and the blower or suction □ 70 is provided on the outer frame of the filter unit at substantially the same height as the ceiling surface 60 or the wall surface.
The filter unit 100 is characterized in that the tip end of the shaft member 33 is substantially at the same position as the ceiling surface 60 or the wall surface, and the shaft member 33 is rotated on the ceiling surface 60 or the wall surface.
It is.

  That is, as shown in each of (2) and (3) in FIGS. 1 and 8 to 12, the filter unit 100 according to the fifth aspect is first formed on the ceiling surface 60 or the filter unit outer frame (base 20). The blow-off or suction port 70 is provided at substantially the same height as the wall surface. Next, the tip of the shaft member 33 is made substantially the same position as the ceiling surface 60 or the wall surface, and the shaft member 33 is rotated. The structure is performed on the ceiling surface 60 or the wall surface.

  That is, in the filter unit 100 adopting each mounting structure of the filter element 10 described above, the replacement operation of the filter element 10 can be performed accurately, quickly, and easily, and the excess of the protruding parts is also possible. There is no need to secure space and it looks great.

And in order to solve the said subject, the means which the invention which concerns on Claim 6 took about the filter unit 100 of the said Claim 5,
“The cover member 50 that covers the outlet or suction port 70 of the filter element 10 is attached only to the outlet or suction port 70 of the filter element.”
It is characterized by.

  That is, the filter unit 100 according to the sixth aspect covers the blow-off or suction port 70 of the filter element 10 as shown in (2) and (3) of FIG. 1, FIG. 8, FIG. 9 and FIG. The cover member 50 is attached only to the outlet or suction port 70 of the filter element.

  As a result, in the filter unit 100 according to the sixth aspect of the present invention, the replacement operation of the filter element 10 can be performed accurately, quickly, and easily, and it is necessary to secure an extra space for the protruding parts. In addition, the filter element 10 is protected by the cover member 50 in addition to being excellent in appearance.

The present invention
“A structure in which the filter element 10 having the frame 11 in which the concave portion 12 is formed on the side surface is attached to the base body 20 by the pressing member 30,
The base 20 includes a support member 21 that rotatably supports the shaft member 33.
The pressing member 30 includes an insertion portion 30a to be inserted into the recess 12 and a first screw 31 provided with a helical screw portion. The shaft member 33 or the support portion 21 is screwed with the first screw 31. A second screw 32 provided with a helical screw portion,
The second screw 32 and the first screw 31 are screwed together and the pressing member 30 is rotated by rotating the shaft member 33 while being supported by the support portion 21, so that the insertion portion 30 a is inserted into the recess 12. In addition, the filter element 10 mounting structure is characterized in that the insertion portion 30a of the pressing member 30 is pressed against the frame 11 of the filter element 10 attached to the base 20 ".
Therefore, the problem of the prior art can be solved, and the replacement of the filter element 10 can be performed accurately, quickly, and easily. Therefore, it is possible to provide a mounting structure for the filter element 10 that does not require an extra space and is excellent in appearance.

  Next, the invention according to each claim configured as described above will be described based on the best mode shown in the drawings. This best mode substantially includes the invention according to each claim.

  As shown in FIGS. 1 and 2, the filter element 10 mounting structure of the present invention is a structure in which the filter element 10 having the frame 11 is mounted on the base body 20. As shown in FIG. 2, a concave portion 12 is formed on the side surface of the frame 11, and the base 20 includes a pressing member 30 having an insertion portion 30 a inserted into the concave portion 12, and the pressing member 30 and a screw. A shaft member 33 is provided, and a support portion 21 that rotatably supports the shaft member 33 is provided.

  In the best mode of the side surface of the frame 11, as shown in FIG. 2, a C channel shape body having a substantially “C channel shape” formed by extrusion is formed, and a recess 12 is formed inside thereof. It is. In addition, two upper and lower screws 14 projecting toward the concave portion 12 are integrally formed in the concave portion 12 of the C channel shaped body. These screw fastenings 14 are used as “screw fastening portions” in the case where the C channel shaped bodies cut to a predetermined size are connected to each other while the rigidity of the C channel shaped bodies themselves is increased.

  As shown in FIGS. 2 and 3, the pressing member 30 has a first screw 31 provided with a helical screw portion, and the shaft member 33 is a helical screw that is screwed with the first screw 31. The second screw 32 is provided with a portion.

  Therefore, by pressing the second screw 32 of the shaft member 33 and the first screw 31 of the pressing member 30 and rotating the shaft member 33 while supporting the shaft member 33 by the support portion, the pressing member 30 rotates, The insertion portion 30 a is inserted into the recess 12, and the pressing member 30 is pressed against the fixing portion 23 provided on the base body 20.

  In the mounting structure of the present invention, the filter element 10 is not particularly limited as long as it has the frame 11, and not only a HEPA filter obtained by pleating a high-performance filter medium made of glass fiber or organic fiber but also a relatively thick fiber is three-dimensional. It is also possible to use a bulky coarse dust filter that is oriented in an oriented manner. However, in the present invention, the mounting structure is suitable for the filter element 10 using a HEPA filter, a medium-high performance filter, or the like particularly used in a clean room.

  Specific examples of non-woven filter media used for HEPA filters and medium-high performance filters include, for example, 5 to 50% by mass of ultrafine fibers having an average fiber diameter of 0.1 to 10 μm and an average fiber diameter of 10 manufactured by a melt blow method. There is a filter medium made of a nonwoven fabric in which 50 to 95% by mass of heat-fusible fibers of ˜100 μm are mixed and this heat-fusible fiber is 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 specified in JIS109908.

  As shown in FIGS. 1 and 2, the base 20 can be an outer frame of the filter unit 100, and can also be a ceiling or a wall. In the case of a ceiling or a wall, for example, it can be applied by attaching a frame material or a channel material to the ceiling or wall to form the base body 20. In the present invention, the mounting structure is particularly suitable for the blow-out or suction filter unit 100 provided on the ceiling of a clean room or the like. In addition, a housing portion 13 suitable for housing the shaft member 33 is formed on the lower left portion of FIG.

  In the present invention, the concave portion 12 is formed on the side surface of the frame 11, but the formation of the concave portion 12 is not particularly limited as long as the insertion portion 30a can be inserted while rotating. For example, as shown in FIG. It may be a frame 11 having a shape and a U-shaped cross section facing each other, or a shape in which holes such as a square shape and a round shape are partially provided in the frame 11. In the case of the frame 11 having a U-shaped cross section, the rotation may be stopped by hitting the wall of the frame 11 when the insertion portion 30a is inserted while rotating. What is necessary is just to make the length of the long axis of the insertion part 30a longer than the distance from a wall to a wall. Alternatively, it is possible to provide a stopper in the recess 12.

  Also, if the frame 11 has a shape in which holes are partially provided, the length of the long axis of the insertion portion 30a is increased as described above so that it can be inserted from one of the holes, and It is also possible to arrange a hole so that the insertion part 30a cannot come out from the other side.

  In the present invention, as shown in FIGS. 1 to 3, the base body 20 includes a pressing member 30 having an insertion portion 30 a inserted into the recess 12, a shaft member 33 screwed with the pressing member 30, and a shaft member 33. And a support portion 21 that rotatably supports the.

  The pressing member 30 has a first screw 31 provided with a helical screw part, and the shaft member 33 has a second screw 32 provided with a helical screw part screwed with the helical screw part. Have.

  As shown in FIG. 2, in the rotating part, a lubricating member (in this example, a resin Duracon bushing) is fitted into a hole provided in the base 20 so that the rotation can be smoothly performed, and the clearance is made small. It is preferable to prevent rotational shake.

  In the present invention, because of such a structure, the second screw 32 of the shaft member 33 and the first screw 31 of the pressing member 30 are screwed together, and the shaft member 33 is rotated while being supported by the support portion 21. Thus, the pressing member 30 rotates to insert the insertion portion 30 a into the recess 12, and the pressing member 30 presses the filter element 10 against the fixing portion 23 provided on the base 20.

  Further, in the present invention, the filter element 10 mounted as described above can be easily detached. That is, by rotating the front shaft member 33 in the direction opposite to the direction when the front shaft member 33 is mounted while being supported by the support portion 21, the pressing member 30 is rotated and the insertion portion 30 a is detached from the recess 12, and the filter element The pressure that has pressed 10 against the fixing portion 23 provided on the base body 20 is released, and the filter element 10 can be detached.

  When the pressing member 30 is rotated and the insertion portion 30a is detached from the recess 12, the insertion portion 30a is attached to the outside of the filter unit 100 so that the insertion portion 30a is not inserted into the recess 12 again. It is preferable to stop against the wall of the frame or to provide a stopper on the base 20.

  As described above, in the mounting structure of the present invention, the insertion portion 30a can be operated in a narrow space such that the vicinity of the tip of the insertion portion 30a hits the wall of the filter element 10 and corresponds to the outer wall of the filter unit 100. That is, the size of the outer frame of the filter unit 100 can be reduced. In this case, if the length of the shortest distance between the wall of the filter element 10 and the outer wall of the filter unit 100 is less than twice the length from the center of rotation of the insertion portion 30a to the tip, it is special. It also means that it is not necessary to arrange a member such as a stopper.

  Also, the mounting structure of the present invention can be in the form of FIGS. In FIG. 6, the first screw 31 is a perforation provided in the pressing member 30, and the second screw 32 is an outer peripheral surface of at least a part of the shaft member 33. The shaft member 33 is provided from end to end of the frame 11 of the filter element 10 so as to connect the support portion 21 that rotatably supports the shaft member 33 and the mounting hole 22. With such a configuration, there is an advantage that the pressing member 30 moves stably without being shaken.

  4 and 5, the first screw 31 is a bolt 30b that is erected and fixed to the pressing member 30, and at least a part of the shaft member 33 is hollow, and the hollow peripheral surface thereof is the second screw. 32.

  In particular, in FIG. 5, the pressing member 30 is erected from the end of the frame 11 to the end of the frame 11 so as to connect the receiving member 21 a provided on the base body 20 that rotatably supports the fixing bolt 30 b and the mounting hole 22. A fixed bolt 30b is provided. With such a configuration, there is an advantage that the pressing member 30 moves stably without being shaken.

  Further, in FIGS. 4 and 5, if the front end surface (lower end surface) of the bolt 30 b is protruded at first and is made to be substantially flush with the ceiling surface after the rotation is finished, the pressing of the pressing member 30 is performed. Can be constant. Further, if the lower end of the bolt is marked, there is an advantage that it can be confirmed that the insertion portion 30a has been reliably inserted into the recess 12.

  In FIG. 7, the pressing member 30 is slidably integrated with the shaft member 33, and the support portion 21 includes the second screw 32. In this figure, the pressing member 30 is slidably integrated via a shaft member 33 and a lubricating member (in this example, a resin duracon bush) provided on the pressing member 30. Specifically, the sliding portion of the pressing member 30 is formed by fitting the Duracon bushing 35 on the inner wall of the socket provided in the pressing member 30, and the sliding portion provided on the shaft at the tip portion of the shaft member 33, It is slidably integrated so as to be inserted from above. This integration is not fixed, but is an integration that does not come off unless a certain load is applied. A nut 36 is attached to the shaft member 33 as a member for supporting a reaction force when the pressing member 30 is pressed against the frame 11 of the filter element 10.

  In this way, in FIG. 7, by rotating while being supported by the support member 21, the pressing member 30 slidably integrated with the distal end portion of the shaft member 33 is rotated, and the insertion portion 30 a becomes the frame 11. The pressing member 30 slides at the sliding portion of the tip end portion of the shaft member 33 having the first screw 31. On the other hand, the first screw 31 continues to rotate and moves upward or downward, and the pressing member 30 is pressed against the frame 11 of the filter element 10. On the other hand, in the structure of FIGS. 2 to 6, when the insertion portion 30 a enters the recess 12 of the frame 11 and comes into contact with the frame 11 and can no longer rotate, the first screw 31 and the second screw 32 is a structure in which the engaging portion with the sliding portion becomes a sliding portion, and the sliding portion is different from the structure shown in FIG.

  In FIG. 7, the structure is improved so that the rotational speed of the shaft member 33 or the degree of pressing of the pressing member 30 can be seen from the outlet side of the filter unit 100. That is, as shown in FIG. 7, with the rotation of the shaft member 33, the shaft member 33 itself is raised, and when an appropriate pressure is applied, the tip of the shaft member 33 is the filter unit outer frame, A stopper 34 (a nut in this example) that stops the rotation of the shaft member 33 may be provided so as to be substantially flush with the ceiling surface 60 of the outer frame of the filter unit 100. That is, as the shaft member 33 rotates, the stopper 34 rises so as to hit the lower end of the support member 21 and stop the rotation.

  In FIG. 7, the stopper is provided with a complicated structure. Therefore, a structure in which the support portion is attached to the outer frame of the filter unit 100 as the support member 21 so that the set of parts can be attached to the outer frame of the filter unit 100. It is said.

  When the mounting structure of the present invention is applied to the filter unit 100, the number of mounting structures is not particularly limited. For example, as shown in FIG. The number of mounting structures can be appropriately determined according to the size of the filter unit 100.

  In FIGS. 1 to 7 in which the mounting structure of the present invention is applied to the filter unit 100, the storage portion in which the mounting structure is accommodated by bringing the ceiling surface 60 of the outer frame of the filter unit 100 close to the lower end of the frame 11 of the filter element 10. The generation of dust from 13 can be reduced and the appearance can be improved. Further, if necessary, it is possible to further complete the seal by packing with a packing or the like between them.

  As described above, by rotating the shaft member 33 while being supported by the support portion, the pressing member 30 is rotated, the insertion portion 30a is inserted into the recess 12, and the pressing member 30 causes the filter element 10 to move. It can be pressed against the fixing portion 23 provided on the base 20. In addition, prior to pressing against the fixing portion 23 provided on the base body 20, it is preferable that the packing 24 is provided in advance on the filter element 10 at a portion in contact with the fixing portion 23.

  The size of the opening of the filter unit is not particularly limited, but is preferably 200 to 1300 mm in both the width direction and the horizontal direction, and practically, for example, a size such as 310 mm or 615 mm should be adopted. Can do.

  In the present invention, the material of the outer frame 12 and the frame 11 is not particularly limited, and examples thereof include wood, metal, and synthetic resin. However, the application to the filter unit 100 has sufficient sealing properties. In order to ensure, it is preferable to be metallic, and considering the case of mass production, it is also preferable that aluminum or the like is made of an extruded material.

  In the blowout filter unit 100, a cover member 50 that covers the blowout port or the suction port 70 of the filter element 10 can be provided as a face guard. In this case, as shown in FIGS. 9 and 10, the outlet filter unit 100 in which the cover member 50 covering the outlet or suction port 70 of the filter element 10 is attached only to the outlet or outlet 70 of the filter element 10 is used. If there is, it is not always necessary to attach the cover member 50 after the replacement work of the filter element 10. For example, the cover member 50 (face guard) is attached to the frame 11 of the filter element 10 in advance, and the filter element 10 with the cover member 50 is attached. Since the work is completed simply by attaching to the outer frame, the work efficiency at the site can be improved.

  In addition, when attaching the cover member 50 to the blowing unit 70 of the filter unit 100 or the filter element 10, a flat shape or a convex shape is preferable, and when attaching to the suction port 70 of the filter unit 100 or the filter element 10, a flat shape. Is preferred.

  The cover member 50 may be a conventionally used net, a drilled metal (iron, aluminum, etc.) plate, a resin plate, or the like.

The filter unit having the filter element mounting structure of the present invention is a filter unit having a thin filter element and showing a flexible duct connection type filter unit. (1) is a bottom view thereof, (2) is ( 1) A partial cross-sectional view taken along line AA in FIG. 1, and (3) a partial cross-sectional view taken along line BB in (1). It is the elements on larger scale of the 1-1 line part in (2) of FIG. FIG. 3 shows a pressing member used in FIG. 2 and parts associated therewith, wherein (1) is a plan view and (2) is an exploded side view. It is a partial expanded sectional view which shows the other Example of what was shown in FIG. FIG. 5 is a partial enlarged cross-sectional view showing still another embodiment of what is shown in FIG. 2. FIG. 5 is a partial enlarged cross-sectional view showing still another embodiment of what is shown in FIG. 2. FIG. 3 shows still another embodiment shown in FIG. 2, wherein (1) is a partially enlarged sectional view, and (2) is an exploded side view. FIG. 2 is another blowout filter unit having a filter element mounting structure according to the present invention, in which the filter element is thin and shows a square duct connection type filter unit, (1) is a bottom view thereof, (2 ) Is a partial cross-sectional view taken along line AA in (1), and (3) is a partial cross-sectional view taken along line BB in (1). Still another blowout filter unit provided with another mounting structure of the filter element of the present invention, wherein the filter element has a medium thickness, a cover member, and a square duct connection type filter unit, (1) is a bottom view thereof, (2) is a partial cross-sectional view taken along line AA in (1), and (3) is a partial cross-sectional view taken along line BB in (1). is there. Still another blowout filter unit having a filter element mounting structure according to the present invention, which includes a cover member, a thin duct is connected, and the duct indicates a square duct connection type filter unit. A bottom view, (2) is a partial cross-sectional view taken along line AA in (1), and (3) is a partial cross-sectional view taken along line BB in (1). A blowout filter unit provided with a cover member, in which a thin duct is connected, and the duct is a square duct connection type filter unit. (1) is a side view thereof, (2) is a front view, (3) It is a bottom view. A blowout filter unit having a conventional filter element mounting structure, (1) is a bottom view thereof, (2) is a partial sectional view taken along line AA in (1), and (3) is (1). It is the fragmentary sectional view seen along the BB line in the inside. 1 shows a blowout filter unit having a conventional filter element mounting structure, wherein (1) is a type in which a mesh is mounted in an opening, and (2) is a partial sectional view of a type in which a cover member is mounted in the opening. is there. It is a fragmentary sectional view which shows the mounting structure of another prior art filter element. It is a fragmentary sectional view which shows the mounting structure of another prior art filter element.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Filter element 11 Frame 12 Recess 13 Storage part 14 Screwing 20 Base 21 Support part or Support member 22 Mounting hole 23 Fixing part 30 Pressing member 30a Insertion part 30b Bolt 31 First screw 32 Second screw 33 Shaft member 40 Duct 50 Cover Member 60 Ceiling surface 70 Air outlet or inlet 100 Filter unit

Claims (6)

A structure in which a filter element having a frame having a recess formed on a side surface is attached to a base by a pressing member,
The base includes a support portion that rotatably supports the shaft member;
The pressing member includes an insertion portion to be inserted into the concave portion and a first screw provided with a spiral screw portion, and the shaft member or the support portion is screwed with the first screw. A second screw provided with a spiral screw portion;
The pressing member is rotated by screwing the second screw with the first screw and rotating the shaft member while supporting the shaft member, and the insertion portion is inserted into the recess. The filter element mounting structure is characterized in that the insertion portion of the pressing member is pressed against a frame of the filter element attached to the base.   The first screw is a screw hole provided in the pressing member, and the screw portion of the second screw screwed into the screw hole is formed on at least a part of the outer peripheral surface of the shaft member. The filter element mounting structure according to claim 1.   The first screw is a bolt that is erected and fixed to a pressing member, at least a part of the shaft member is hollow, and the hollow peripheral surface is a screw hole as a second screw. 2. The filter element mounting structure described in 1.   2. The filter element mounting structure according to claim 1, wherein the pressing member is slidably integrated with the shaft member, and the support portion includes a second screw. A filter unit comprising the mounting structure according to any one of claims 1 to 4,
The filter element is mounted on an outer frame of the filter unit as the base body, and a blow-off or suction port is provided at substantially the same height as the ceiling surface or the wall surface on the filter unit outer frame,
A filter unit characterized in that a tip of the shaft member is substantially at the same position as the ceiling surface or the wall surface, and the shaft member is rotated by the ceiling surface or the wall surface.   The filter unit according to claim 5, wherein a cover member that covers the blowout port or suction port of the filter element is attached only to the blowout port or suction port of the filter element.

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