JP2008253886A - Air filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce an amount of an adhesive to be used so as to bond a filter material to a crosspiece part. <P>SOLUTION: A front crosspiece part to be slung between a top plate and a ground plate is provided in the aperture part of an air filter. The front crosspiece part 25F has a crosspiece plate part 26 which is composed of a left plate part 37L, a right plate part 37R, and a folding part 36 which connects the left plate part 37L with the right plate part 37R. A first and second grooves 34A and 34B are provided, the grooves' bottom surfaces being the left plate part 37L and the right plate part 37R, respectively. A first and second filter materials 40X and 40Y are provided in the inner part of the air filter, one end parts 40F of the filter materials being adjacent to each other and the other parts being apart from each other at a prescribed opening angle α. The one end parts 40F of the first and second filter materials 40X and 40Y are inserted into the inner parts of the first and second grooves 34A and 34B. The one end parts 40F are bonded to the inner parts of the first and second grooves 34A and 34B with an adhesive 50. The left plat part 37L and the right plate part 37R can be folded at a folding part 36 and are folded in accordance with the opening angle α. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cell type air filter in which a filter medium is arranged in a V shape.

  Conventionally, a cell-type air filter in which a set of filter media folded in a pleat shape is arranged in a V shape is known. This type of air filter is usually connected to a plurality of V shapes, and the top of each V shape is disposed in each opening of the filter frame. At the top of the V shape formed by two filter media, the filter paper constituting the filter media is folded into a pleat shape, so it is difficult to eliminate the gap between the filter media, and air leakage usually occurs between the filter media.

  In order to eliminate such an air leak, a U-shaped cross section provided between the top plate and the main plate of the filter frame is provided at the inflow and outflow side openings of the filter frame. The top of the V shape is disposed inside the U-shape, and is adhered by an adhesive filled inside the U-shape, thereby preventing air leakage from the top of the V-shape.

  Usually, the bottom surface of the U-shaped crosspiece is formed in a planar shape, while the two filter media forming the V-shaped top are connected at an arbitrary opening angle. Therefore, the larger the opening angle, the larger the gap between the one end portion and the bottom portion of the filter medium, and the greater the amount of adhesive used to fill the gap.

For example, Patent Document 1 has a shape in which a bottom surface portion of a U-shaped crosspiece is bent so that the ends of both side walls of the U-shape are spaced apart according to a V-shaped opening angle. A structure is disclosed in which a sealing material made of sponge rubber is disposed between the end face of the filter medium and the end face of the filter medium. According to such a configuration, the end face and the side face of the end of the filter medium can be disposed along the U-shaped bottom face and the both side walls of the U-shape, so even when the V-shaped opening angle is large, The volume of the sealing material can be suppressed.
JP 2000-342922 A

  By the way, the cell-type air filter needs to be assembled after appropriately changing the V-shaped opening angle in accordance with the application in order to adjust the opening area, the filter medium effective area, and the like according to the application. However, according to the configuration of Patent Document 1, since the U-shaped bottom surface is fixedly formed and the bending angle cannot be adjusted, it is difficult to assemble by changing the V-shaped opening angle.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a cell-type air filter in which the amount of adhesive used does not increase even when the connection angle between two filter media increases. To do.

  The air filter according to the present invention includes a filter frame having a top plate and a ground plate arranged opposite to each other, a crosspiece portion extending in the top-to-bottom direction, and both sides in the top-to-bottom direction of one surface of the crosspiece portion. The first and second side walls that protrude and extend in the top-to-bottom direction are passed between the top plate and the base plate so that one surface faces the inside of the filter frame at the opening of the filter frame. And at least first and second filter medium parts disposed inside the filter frame, each of the first and second filter medium parts having a first end portion between the first and second side walls. And a filter medium unit having a V shape as viewed from the top plate side by being arranged close to or connected to each other and having the other opening portion spaced apart at a predetermined opening angle. The one end portions of the first and second filter media portions are bonded to the crosspieces with an adhesive filled between the first side wall and the second side wall on one surface of the crosspiece plate portion.

  In the air filter according to the present invention, the crosspiece is connected to the first side wall, extends in the vertical direction, and faces the end surface of one end of the first filter member, and the first plate A second plate portion connected to the side wall of the second plate and extending in the vertical direction and opposed to an end surface of one end portion of the second filter medium portion; and a bent portion connecting the first and second plate portions. And at least one of the first and second plate portions can be bent starting from the bent portion, and is bent toward the outside of the filter frame in accordance with a predetermined opening angle. To do.

  The crosspieces protrude from the first and second plate parts toward the inside of the filter frame at positions spaced from the first side wall and the second side wall, and extend in the vertical direction. It is preferable to further have a second partition wall. In this case, a first groove having the first side wall and the first partition wall as the groove side surface and the first plate portion as the groove bottom surface is formed, and the second side wall and the second partition wall are the groove. A second groove having a side surface and the second plate portion as a groove bottom surface is formed. And while the one end part of a 1st filter medium is arrange | positioned inside a 1st groove | channel, the one end part of a 2nd filter medium is arrange | positioned inside a 2nd groove | channel.

  For example, the bent portion is formed thinner than the first and second plate portions. Further, for example, the bent portion is formed of a material having higher flexibility than the first and second plate portions.

  At the edge of at least one of the top plate and the base plate, a first bent portion formed by bending toward the base plate or the top plate, and further bent from the first bent portion to the inside of the filter frame. It is preferable that the second bent portion is formed, and the second bent portion is formed with a concave portion with which the crosspiece portion is engaged.

  In the present invention, the crosspiece plate portion is bent according to the opening angle of the two filter media forming the V shape, and the gap between the crosspiece plate portion and the filter media can be reduced. Can be reduced.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In the following description, the up and down direction and the left and right direction in FIG. 1 will be described as the up and down direction (top and bottom direction) and the left and right direction, respectively.

  As shown in FIGS. 1 to 3, the air filter 10 includes a square frame-shaped filter frame 11 and a filter medium unit 60 disposed in the filter frame 11. The filter frame 11 is formed in a rectangular or rectangular square frame shape, and has a front opening 39F and a rear opening 39B on the front side and the rear side, the front opening 39F is on the air inflow side, and the rear opening 39B is on the air inflow side. On the air outflow side, air is passed from the front to the rear. However, in the filter frame 11, the front opening 39F may be the air outflow side and the rear opening 39B may be the air inflow side, and air may be passed from the rear toward the front.

  The filter frame 11 includes a base plate 12 and a top plate 13 that are parallel to each other, a left side plate 14 that connects the left edge portions of the base plate 12 and the top plate 13, and a right side plate 15 that connects the right edge portions of the base plate 12 and the top plate 13. The left side plate 14 and the right side plate 15 are also arranged in parallel to each other.

  As shown in FIG. 3, the ground plane 12 is formed by bending the front edge portion 12F and the rear edge portion 12B upward from the left end to the right end by 90 ° upward with respect to the ground plane. And a first rear bent portion 16B. The first front bent portion 16F and the first rear bent portion 16B are notched at the left end and the right end.

  A second front bend formed at the upper edge of each of the first front bent portion 16F and the first rear bent portion 16B is further bent toward the inside of the filter frame 11 (that is, the rear direction or the front direction). Each of the portion 17F and the second rear bent portion 17B is formed. Here, each of the second front bent portion 17F and the second rear bent portion 17B is bent by 90 ° with respect to the first front bent portion 16F and the first rear bent portion 16B, and becomes parallel to the ground plane 12.

  The second front bent portion 17F includes a plurality of front bent pieces 19F bent from the upper edge portion of the first front bent portion 16F toward the rear (that is, inside the filter frame). Each of the front bent pieces 19F has an isosceles trapezoidal shape in which the left and right lengths become shorter as viewed from above. A plurality of the front bent pieces 19F are arranged at equal intervals on the left and right sides, and thereby, a plurality of the same bend-like trapezoidal shapes in which the left and right lengths are shortened toward the rear between the front bent pieces 19F. Front recess 21F is formed, and the front recess 21F is arranged at equal intervals on the left and right.

  The second rear bent portion 17B is composed of a plurality of rear bent pieces 19B and two semi-bent pieces 20B bent from the upper edge of the first rear bent portion 16B toward the front (that is, inside the filter frame). Become. The two half-bending pieces 20B are respectively disposed in the vicinity of the left edge portion 12L and the right edge portion 12R of the main plate 12, and the plurality of rear bending pieces 19B are equally spaced between the two half-bending pieces 20B. Be placed.

  The semi-bending piece 20B and the rear bending piece 19B have a shorter left and right length when viewed from above, and each has a trapezoidal shape. In particular, the rear bending piece 19B has substantially the same isosceles trapezoidal shape. And between the semi-bending piece 20B and the rear bending piece 19B, and between each of the rear bending pieces 19B, a plurality of rear concave portions 21B exhibiting substantially the same isosceles trapezoidal shape whose left and right lengths become shorter toward the front. Are formed, and the plurality of rear recesses 21B are arranged at equal intervals on the left and right.

  Each front recess 21F provided on the front edge portion 12F side is disposed in the center of two adjacent rear recesses 21B in the left-right direction, and the rear recess 21B and the front recess 21F are alternately disposed in the left-right direction.

  The base plate 12 further includes a left bent portion 16L and a right bent portion 16R, each of which has a left edge portion 12L and a right edge portion 12R bent upward by 90 ° with respect to the ground plate from the front end to the rear end. The left bent portion 16L and the right bent portion 16R have shapes in which the front end and the rear end are notched. The upper edge of each of the left bent portion 16L and the right bent portion 16R is formed by bending further toward the right or left direction (that is, inside the filter frame 11) in the center portion in the front-rear direction. A left bent piece 18L and a right bent piece 18R are formed.

  The top plate 13 has the same structure as the base plate 12, and a plurality of front recesses 21 </ b> F and rear recesses 21 </ b> B having the same configuration are also formed on the front edge portion and the rear edge portion of the top plate 13. That is, the front concave portion 21F and the rear concave portion 21B of the top plate 13 are arranged at positions corresponding to the front concave portion 21F and the rear concave portion 21B of the base plate 12, that is, at positions where the left and right and front and rear directions are the same.

  A plurality of front beam portions 25F and rear beam portions 25B are provided in each of the front opening 39F and the rear opening 39B of the filter frame 11. The front crosspiece 25F includes a crosspiece 26 extending in the vertical direction, and a left side protruding vertically from one surface 26A of the crosspiece 26 toward the rear in each of the left side 26L and the right side 26R of the crosspiece 26. A wall 29L and a right side wall 29R are provided. Both the left side wall 29L and the right side wall 29R extend in the vertical direction, and are provided from the upper end to the lower end of the crosspiece 26. First and second front grooves 34A, 34B extending in the vertical direction are formed between the left side wall 29L and the right side wall 29R in the front crosspiece 25F. Similarly, each rear crosspiece 25B includes a crosspiece 26, a left side wall 29L, and a right side wall 29R, and first and second rear grooves having the same configuration as the first and second front grooves 34A and 34B. 35A and 35B are formed.

  Each front crosspiece 25F is arranged to be engaged with each of the front recesses 21F arranged correspondingly on the top plate 13 and the main plate 12. That is, each front crosspiece 25F is engaged with a front concave portion 21F formed on the base plate 12 with an outer peripheral surface near the lower end thereof, and an outer peripheral surface near the upper end thereof with a front concave portion 21F formed on the top plate 13. Engaged. Thereby, the front crosspiece 25F is passed and arranged between the top plate 12 and the main plate 13. The front crosspiece 25F is disposed such that one surface 26A faces rearward (that is, inside the filter frame 11), and the left side wall 29L and the right side wall 29R are in contact with the inner periphery of the front concave portion 21F. 21F is engaged. At this time, the left side wall 29L and the right side wall 29R are gradually separated toward the rear side by bending the crosspiece 26 as described later. Further, the left side wall 29L and the right side wall 29R protrude rearward, and the first and second front grooves 34A and 34B are opened rearward. The front crosspieces 25F are engaged with all the front recesses 21F, whereby the front crosspieces 25F are arranged at equal intervals on the left and right.

  Similarly, each of the rear recesses 25B arranged correspondingly on the top plate 13 and the main plate 12 is also engaged with each of the rear beam portions 25B, whereby the rear beam portions 25B are also arranged at equal intervals on the left and right. Established. At this time, the left side wall 29L and the right side wall 29R of the rear crosspiece 25B protrude forward (that is, the inside of the filter frame 11), and the first and second rear grooves 35A and 35B are forward. Open toward. The front crosspiece 25F and the rear crosspiece 25B are supported by the front concave portion 21F and the rear concave portion 21B, respectively, and the upper end and the lower end are fixed to the lower surface of the top plate 13 and the upper surface of the base plate 12 by an adhesive.

  The left side plate 14 and the right side plate 15 are formed with side plate bent portions 33 bent at the front and rear edges thereof on the inner side (right side or left side) of the filter frame 11, and at the center in the front-rear direction. A recessed portion 32 that is recessed toward the inside is formed. The left side plate 14 has its outer peripheral surface 14A engaged with the inner peripheral surface 16A of the left bent portion 16L of the top plate 13 and the base plate 12, and the left edge bent piece 18L is engaged inside the recessed portion 32, so that the The board 13 and the main board 12 are fitted inside. The left side plate 14 is fixed to the base plate 12 and the top plate 13 by screws, rivets or the like, and connects the top plate 13 and the base plate 12. Similarly, the right side plate 15 is fitted and fixed inside the top plate 13 and the main plate 12, and connects the top plate 13 and the main plate 12.

  In the front opening 39F, a left L-shaped beam portion 27L and a right L-shaped beam portion 27R that extend in the vertical direction are provided on the left and right sides of the front beam portion 25F provided on the left and right sides, respectively. Each of the left L-shaped crosspiece 27L and the right L-shaped crosspiece 27R is formed by bending the base plate 30 and the right edge or the left edge of the base plate 30 to the inside of the filter frame 11 (that is, the rearward direction). And has a substantially L-shaped cross section.

  Each of the left L-shaped beam portion 27L and the right L-shaped beam portion 27R is arranged so that the base plate 30 is along the inner surface of the front side plate bent portion 33 in the left side plate 14 and the right side plate 15. Each L-shaped bar portion 27L, 27R is fixed to the side plate bent portion 33 with screws, rivets or the like. Each member and each crosspiece of the filter frame are formed of a metal such as aluminum, a galvanized steel plate, a galvalume steel plate, or a resin such as ABS.

  As shown in FIG. 2, the filter medium unit 60 includes a plurality of filter media 40. Each filter medium 40 is configured by a filter paper sheet made of glass fiber or synthetic fiber or a non-woven filter medium sheet. In the filter medium 40, the filter medium sheet is folded into a pleat shape so that the folds in the same filter medium 40 are parallel to each other, and a large number of pleats are formed. Each filter medium 40 folded in this way is formed in a plate-shaped rectangular parallelepiped.

  The plurality of filter media 40 are arranged inside the filter frame 11 so that the folds are substantially parallel to the top plate 13 and the base plate 12. One end portion 40F in the fold direction of each filter medium 40 is disposed in the front opening 39F, and the other end portion 40B in the fold direction is disposed in the rear opening 39B.

  The two filter media 40 adjacent to each other in the left-right direction are arranged so that one end 40F or the other end 40B is close between the side walls 29L and 29R of the front beam portion 25F or the rear beam portion 25B, and the opening angle α When the other end portion 40B or the one end portion 40F is arranged apart from each other, a V shape is exhibited when viewed from the top plate 13 side. Thereby, each filter medium 40 is disposed at an angle α / 2 with respect to the front-rear direction from the front opening 39F toward the rear opening 39B. Therefore, the end faces E of both end portions 40F and 40B of the filter medium 40 are also inclined by an angle α / 2 with respect to the left-right direction. In addition, the end surface E of both ends 40F and 40B exhibits a substantially rectangular shape that extends long in the vertical direction.

  The plurality of filter media 40 are alternately approached on the rear side and the front side from the left side plate 13 to the right side plate 14, and exhibit a zigzag shape when viewed from above. The one end 40F of each of the filter media 40 arranged on the leftmost and rightmost sides is not adjacent to one end of the other filter media, and is arranged inside the L-shape of the left L-shaped beam portion 27L and the right L-shaped beam portion 27R, respectively. The One end portion 40F of the filter medium disposed inside the L-shaped crosspieces 27L and 27R is fixed to the L-shaped crosspieces 27L and 27R with an adhesive.

  The two one end portions 40F forming the V-shaped top portion 41F on the front side are respectively disposed inside the first and second front grooves 34A and 34B between the side walls 29L and 29R in the same front crosspiece 25F. Be placed. These one end portions 40F are fixed to the front crosspiece 25F by the adhesive 50 (see FIGS. 4 and 5) filled in the first and second front grooves 34A and 34B. Similarly, the two other end portions 40B forming the V-shaped top portion 41B on the rear side are also arranged inside the first and second rear grooves 35A and 35B, and the first and second rear grooves 35A and 35B. It is bonded to the rear crosspiece 25B by the adhesive 50 filled inside. Further, the upper end portion and the lower end portion of the filter medium 40 are also fixed to the base plate 12 and the top plate 13 with an adhesive (not shown).

  4 and 5 are cross-sectional views of the front crosspiece according to the present embodiment. FIG. 4 shows a state before the crosspiece is bent, and FIG. 5 shows a state after the crosspiece is bent. . Hereinafter, the front crosspiece will be described in more detail with reference to FIGS. In the description using FIGS. 4 and 5, the filter medium inserted into the first front groove 34A of the front crosspiece 25F is the first filter medium 40X, and is inserted into the second front groove 34B. The filter medium will be described as the second filter medium 40Y.

  As described above, the front crosspiece 25F includes the crosspiece 26, the left side wall 29L and the right side wall 29R protruding from the left side 26L and the right side 26R of the crosspiece 26. A central portion in the left-right direction (that is, the width direction) of the crosspiece 26 is formed thinner than other portions from the upper end to the lower end, and is formed as a bent portion 36. That is, the crosspiece 26 is connected to the left side wall 29L and extends in the up and down direction, the left side plate part 37L and connected to the right side wall 29R and extends in the up and down direction, the left side plate part 37L, The plate portion 37R is connected, and includes a bent portion 36 that extends in the vertical direction and is formed thinner than the left plate portion 37L and the right plate portion 37R. Note that the left plate portion 37L, the right plate portion 37R, and the bent portion 36 are arranged on the same plane before being bent.

  A left partition wall 38L that protrudes rearward and perpendicular to the left plate portion 37L is formed at a connection portion between the left plate portion 37L and the bent portion 36. The left partition wall 38L extends in the vertical direction, and is provided from the upper end to the lower end of the left plate portion 37L. Similarly, a right partition wall 38R is formed at a connection portion between the right plate portion 37R and the bent portion 36. The first front groove 34A described above is configured with the left side wall 29L and the left partition wall 38L as the groove side surfaces and the left plate portion 37L as the groove bottom surface. Further, the second front groove 34B is configured with the right side wall 29R and the right partition wall 38R as the groove side surfaces and the right plate portion 37R as the groove bottom surface. The front crosspiece 25F is integrally formed by, for example, extrusion molding of the same material metal or synthetic resin.

  As described above, the first and second filter media 40X and 40Y are inserted into the first and second front grooves 34A and 34B, whereby one end portion 40F of the first and second filter media 40X and 40Y. Is disposed so as to face the groove bottom surface, that is, the right plate portion 37R and the left plate portion 37L.

  Since the bent portion 36 is thinner than the left plate portion 37L and the right plate portion 37R, each of the left plate portion 37L and the right plate portion 37R starts and ends in the front-rear direction (the vertical direction in FIGS. 4 and 5). ) Can be bent. In the present embodiment, each of the left plate portion 37L and the right plate portion 37R starts from the bent portion 36 and starts from the outside of the filter frame 11 (that is, the front side and the lower side in FIGS. Direction) by an angle α / 2. Thereby, the left side wall 29L and the right side wall 29R are arranged to be gradually separated from each other toward the rear.

  That is, each of the left plate portion 37L and the right plate portion 37R is disposed with an angle α / 2 inclined forward with respect to the left-right direction, the angle formed by the left side wall 29L and the right side wall 29R, and the left partition wall 38L. The angle formed by the right partition wall 38R matches the opening angle α. Therefore, the direction in which the openings of the first and second front grooves 34A and 34B face is the direction in which the first and second filter media 40X and 40Y extend from the front opening 39F toward the rear opening 39B. Match.

  With the above configuration, the end surface E of the one end portion 40F of the first filter medium 40X extends along the left plate portion 34A, and both side surfaces F of the first filter medium 40X are disposed along the left side wall 29L and the left partition wall 38L. The As a result, the one end portion 40F of the first filter medium 40X is inserted into the first front groove 34A with almost no gap between it and the inner surface of the first front groove 34A. Similarly, one end 40F of the second filter medium 40Y is inserted in the second front groove 34B with almost no gap between the groove inner surface.

  In the present embodiment, if the left plate portion 37L and the right plate portion 37R are bent at a total angle α, it is not necessary to be bent at an angle α / 2. For example, only one of them may be bent forward. . However, even when only one of the left plate portion 37L and the right plate portion 37R is bent, in the filter medium arrangement of the present embodiment, each of the left plate portion 37L and the right plate portion 37R is on the front side with respect to the left-right direction. It arrange | positions so that angle (alpha) / 2 may be inclined. Of course, when the filter medium arrangement is different, the left plate portion 37L and the right plate portion 37R do not have to be inclined forward at the same angle with respect to the left-right direction. For example, only one of them is forward with respect to the left-right direction. It may be tilted to the side. Further, only one of the first and second plate portions 37L and 37R may be bendable. In addition, since the back crosspiece 25B has the same configuration as the front crosspiece 25F, the description thereof is omitted.

  Next, an assembling method of the air filter 10 according to the present embodiment will be described again with reference to FIGS. In the air filter 10 according to the present embodiment, first, the first and second rear grooves 35A and 35B of the rear bar portion 25B are filled with an adhesive, and the first and second rear grooves 35A and 35B are filled therein. The other end portions 40B of the two filter media 40 are soaked in an adhesive and fixed.

  Next, L-shaped crosspieces 27L and 27R are fixed to the side plate bent portions 33 on the front side of the left side plate 14 and the right side plate 15, respectively. Then, the left side plate 14 and the right side plate 15 to which the L-shaped crosspieces 27L and 27R are fixed are fixed to the first front bent portion 16F of the base plate 12 and the top plate 13 with screws or rivets. Next, after each front beam portion 25F is arranged inside each front recess 21F of the base plate 12 and the top plate 13, the inside of the first and second front grooves 34A, 34B of the front beam portion 25F, and the L-shaped beam portion Fill L-shaped 27L and 27R with adhesive.

  Thereafter, the crosspiece 26 of the rear crosspiece 25B is bent from the bent portion 36 (see FIGS. 4 and 5), and the two filter media 40 fixed to the rear crosspiece 25B are opened at a predetermined angle α, While arrange | positioning to V shape, each back crosspiece 25B is engaged with each back recessed part 25B. Next, the one end portion 40F of each filter medium 40 is disposed inside the first and second front grooves 34A, 34B of the front crosspiece 25F or inside the L-shaped crosspiece sections 27L, 27R, and the one end 40F of the filter medium 40 is arranged. Immerse them in the internal adhesive and fix them. At this time, the front crosspiece 25F is engaged with each front concave portion 21F by bending the crosspiece 26 with the bent portion 36 as a starting point.

  Thereafter, the left side plate 14 and the right side plate 15 are fixed to the first rear bent portion 16B of the main plate 12 and the top plate 13 with screws or rivets. Next, an adhesive is filled and cured on the upper surface of the base plate 12, and the lower end of the filter medium 40 and the lower ends of the front crosspiece 25F and the rear crosspiece 25B are fixed to the base plate 12 with an adhesive. Thereafter, the lower surface of the top plate 13 is filled and cured with an adhesive, and the upper end portion of the filter medium 40 and the upper end portions of the front beam portion 25F and the rear beam portion 25B are fixed to the top plate 13 with an adhesive, and the air filter 10 is fixed. obtain.

  In this embodiment, the crosspieces of the front crosspiece and the back crosspiece are bent according to the opening angle α of the filter medium, and the inner peripheral surface of the groove formed in each crosspiece 25F, 25B and the filter medium 40 Since it becomes difficult to produce a clearance gap between the edge parts 40F and 40B, the usage-amount of an adhesive agent can be reduced.

  Moreover, since the crosspiece part 26 in this embodiment is bent, it becomes difficult to fix to the 1st bending part 16F, 16B of the base plate 12 and the top plate 13 with a screw | thread etc. in a predetermined position. However, in the present embodiment, the crosspieces 25F and 25B are engaged with the recesses 21F and 21B, and are fixed to the base plate 12 and the top plate 13 by the adhesive in the engaged state. be able to.

  In the present embodiment, each of the second front bent portion 17F and the second rear bent portion 17B may be bent more than 90 ° with respect to the first front bent portion 16F and the first rear bent portion 16B. It may be bent less than 90 °. Similarly, the 1st front bending part 16F and the 1st back bending part 16B may be bent more than 90 degrees with respect to the main plate 12, and may be bent less than 90 degrees.

  In the present embodiment, the left partition wall 38L and the right partition wall 38R are formed at the connection portions with the bent portions 36 in the left plate portion 37L and the right plate portion 37R, respectively, but the left plate portion 37L and the right plate portion. It may be provided at any position as long as it is located on the one surface 26A side of 37R and is separated from the left side wall 29L and the right side wall 29R.

  FIG. 6 is an enlarged cross-sectional view of the front beam portion according to the second embodiment of the present invention. In the first embodiment, each of the crosspieces 25F and 25B is formed with two grooves. However, in this embodiment, each of the crosspieces 25F and 25B is not provided with the partition walls 38L and 38R. Each of the portions 25F and 25B is provided with only one groove.

  That is, in this embodiment, the left side wall 29L and the right side wall 29R are the groove side surfaces, the crosspiece 26 is the groove bottom surface, and the integrated groove 34C is formed, and one end portions 40F of the two filter media 40 are formed inside the integrated groove 34C. Is placed. The two one end portions 40F arranged inside the integrated groove 34C are bonded to the inside of the integrated groove 34C by the adhesive 50 filled inside the integrated groove 34C.

  Also in this embodiment, of course, the crosspiece 26 is bent with the bent portion 36 as a starting point according to the opening angle α of the two filter media. The end face E and the left side face F ′ of the first end part 40F of the first filter medium 40X are arranged along the left plate part 37L and the left side wall 29L, respectively. Similarly, the end face E and the right side face F ″ of the one end part 40F of the second filter medium 40Y are arranged along the right plate part 37R and the right side wall 29R. Therefore, also in this embodiment, one end of the filter medium 40 is arranged. The gap between the portion 40F and the integrated groove 34C is minimized, and the amount of the adhesive 50 used can be reduced.The configuration of the rear beam portion in the present embodiment is the same as the configuration of the front beam portion. Since it is the same, the description is abbreviate | omitted.

  In this embodiment, it is difficult to bend the crosspiece 26 after the adhesive 50 is solidified. Therefore, before the adhesive 50 is solidified, the crosspiece 26 is started from the bent portion 36. It can be bent. Since other manufacturing methods are the same as those in the first embodiment, description thereof will be omitted.

  In the second embodiment, the first and second filter media 40X and 40Y are provided close to each other in the same manner as in the first embodiment. . Moreover, the filter medium unit 60 may not be composed of the plurality of filter media 40 but may be formed of one filter medium formed by folding one filter paper so that the crease direction extends in the vertical direction. That is, the first and second filter medium portions 40X and 40Y may be integrally connected.

  Furthermore, in the crosspieces 25B and 25F of the first and second embodiments, the bent portion 36 does not have to be formed thinner than other portions (the left plate portion 37L and the right plate portion 37R). For example, only the bent portion 36 may be formed of a material having relatively high flexibility, while the other portions (the left plate portion 37L and the right plate portion 37R) may be formed of a material having relatively low flexibility. . In this case, the front beam portion 25F and the rear beam portion 25B may be formed by a method other than extrusion molding. In addition, as a highly flexible material, if it is a metal, a spring steel plate etc. will be mentioned, for example. Further, for example, the bent portion 36 may be formed of synthetic resin, and the other portions (the left plate portion 37L and the right plate portion 37R) may be formed of metal.

It is the front view which looked at the air filter from the front. It is the top view which looked at the air filter from the top plate side, in order to show the inside of the air filter which concerns on 1st Embodiment. It is the perspective view which decomposed | disassembled and showed the filter frame in 1st Embodiment. It is sectional drawing of the front crosspiece part which concerns on 1st Embodiment, Comprising: It is a mode of the front crosspiece part before a crosspiece board part is bent. It is sectional drawing of the front crosspiece part which concerns on 1st Embodiment, Comprising: It is a mode of the front crosspiece part after the crosspiece board part is bent. It is sectional drawing of the front crosspiece part which concerns on 2nd Embodiment, Comprising: It is a mode of the front crosspiece part after the crosspiece board part is bent.

Explanation of symbols

10 Filter 11 Filter frame 12 Base plate 13 Top plate 25F Front beam portion 25B Rear beam portion 26 Beam plate portion 29L Left side wall (first side wall)
29R Right side wall (second side wall)
34A, 34B First and second grooves 34C Integrated groove 38L Left partition wall (first partition wall)
38R Right partition wall (second partition wall)
37L Left plate (first plate)
37R Right plate (second plate)
39F Front opening 39B Rear opening 40 Filter medium 40F One end 40B Other end 41B, 41F V-shaped top 50 Adhesive 60 Filter medium unit

Claims (4)

A filter frame having a top plate and a ground plate arranged opposite to each other;
A crosspiece extending in the top-and-bottom direction, and projecting from both sides in the top-and-bottom direction of one surface of the crosspiece and having first and second side walls extending in the top-and-bottom direction, In the opening of the filter frame, a crosspiece passed between the top plate and the base plate so that the one surface faces the inside of the filter frame,
At least first and second filter medium portions disposed inside the filter frame, each of the first and second filter medium portions being close to each other between the first and second side walls. Or, in addition to being arranged in a connected manner, the other end portion is spaced apart at a predetermined opening angle, thereby providing a filter medium unit exhibiting a V shape when viewed from the top plate side,
One end portions of the first and second filter medium portions are bonded to the crosspiece portion with an adhesive filled between the first side wall and the second side wall on one surface of the crosspiece plate portion. In the air filter,
The crosspiece is connected to the first side wall and extends in the vertical direction and is connected to the second side wall and the first plate facing the end surface of one end of the first filter medium part. The second plate portion extending in the top-and-bottom direction and facing the end surface of the one end portion of the second filter medium portion, and a bent portion connecting the first and second plate portions,
At least one of the first and second plate portions can be bent starting from the bent portion, and is bent toward the outside of the filter frame according to the predetermined opening angle. A featured air filter. The crosspiece portion protrudes from the first and second plate portions toward the inside of the filter frame at a position separated from each of the first side wall and the second side wall, and extends in the vertical direction. A first partition wall and a second partition wall,
A first groove having the first side wall and the first partition wall as a groove side surface and the first plate portion as a groove bottom surface is formed,
A second groove having the second side wall and the second partition wall as a groove side surface and the second plate portion as a groove bottom surface is formed;
The one end of the first filter medium is disposed in the first groove, and the one end of the second filter medium is disposed in the second groove. Air filter.   The air filter according to claim 1, wherein the bent portion is formed to be thinner than the first and second plate portions.   The air filter according to claim 1, wherein the bent portion is formed of a material having higher flexibility than the first and second plate portions.

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