WO2020166479A1 - Air cleaner and production method therefor - Google Patents

Air cleaner and production method therefor Download PDF

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Publication number
WO2020166479A1
WO2020166479A1 PCT/JP2020/004523 JP2020004523W WO2020166479A1 WO 2020166479 A1 WO2020166479 A1 WO 2020166479A1 JP 2020004523 W JP2020004523 W JP 2020004523W WO 2020166479 A1 WO2020166479 A1 WO 2020166479A1
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WO
WIPO (PCT)
Prior art keywords
air
filter paper
air holes
hole
air cleaner
Prior art date
Application number
PCT/JP2020/004523
Other languages
French (fr)
Japanese (ja)
Inventor
浩司 夏目
文雄 小倉
崇彰 稲森
Original Assignee
いすゞ自動車株式会社
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Filing date
Publication date
Application filed by いすゞ自動車株式会社 filed Critical いすゞ自動車株式会社
Publication of WO2020166479A1 publication Critical patent/WO2020166479A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • F02M35/024—Air cleaners using filters, e.g. moistened

Definitions

  • the present disclosure relates to an air cleaner and a method of manufacturing the same, and more particularly, to an air cleaner that improves detection accuracy of a flow rate and a method of manufacturing the same.
  • the support material of the air cleaner described in Patent Document 1 is made of punching metal or expanded metal so as to support the filter paper and allow the air after passing through the filter paper to pass through.
  • the support material has a tubular shape by rolling these plate materials and stacking and joining both end portions in the cylinder circumferential direction.
  • the parts that are laminated and joined obstruct the air flow with respect to the other parts, and the part that obstructs the air flow is formed in a part of the support material in the cylinder circumferential direction. become.
  • the detection value of the flow rate sensor arranged on the downstream side of the air cleaner with respect to the air flow varies, and the flow rate detection accuracy decreases. It was In particular, it is preferable to install the flow rate sensor in a location where the flow path is straight and the inner diameter has little variation in the intake pipe for accuracy improvement, but due to vehicle layout restrictions, the condition immediately after the air cleaner is suitable for that condition. There are cases. However, when the air cleaner and the flow rate sensor are brought close to each other, the above-mentioned variation in the detected value becomes large.
  • An object of the present disclosure is to provide an air cleaner that can improve the detection accuracy of the flow rate by reducing the variation in the detection value of the flow rate sensor arranged on the downstream side with respect to the air flow, and a manufacturing method thereof.
  • An air cleaner according to an embodiment of the present disclosure that achieves the above object is a casing, a cylindrical filter paper installed inside the casing, and a cylinder installed inside or outside of the filter paper in the cylinder radial direction to support the filter paper.
  • An air cleaner comprising a plurality of air holes through which the air passing through the filter paper passes in a cylinder radial direction, the support material being a single layer ventilation part.
  • the ventilation portion is formed with a large number of the air holes
  • the joint portion has a through hole penetrating the both ends and a joint frame surrounding the periphery of the through hole, and the amount of air passing through the ventilation portion is equal when compared in the same cylinder area. It is characterized by
  • a support member formed in a cylindrical shape is installed inside a housing, and the support member is formed in a cylindrical shape inside or outside in the cylinder radial direction.
  • a plate material is formed with a large number of air holes through which the air passing through the filter paper can pass, and the plate material is formed into a cylindrical shape by rolling the plate material in a cylinder circumferential direction.
  • the plurality of air holes formed at one end of the both ends and the plurality of air holes formed at the other end are aligned in the stacking direction to form a through hole.
  • the support member is produced by joining the laminated portions in a state where the air passage amount is equal to that of the single layer ventilation portion.
  • a support member formed in a tubular shape is installed inside a housing, and the support member is formed in a tubular shape inside or outside in a tubular radial direction.
  • a plurality of air holes, through which the air passing through the filter paper can pass are formed in the central portion of the plate member to form a ventilation portion, and the plate member is rolled into a tubular shape.
  • both ends of the plate material in the cylinder circumferential direction are laminated and joined to form a joint portion, and when the joint portion is compared in the same cylinder area, the amount of air passing through the joint portion is changed to the ventilation portion.
  • the support material is prepared by forming a through hole equal to the passage amount of the air.
  • a single-layer ventilation part formed with a large number of air holes and a joint part having a through hole that is laminated and joined are formed, and a plurality of layers are formed when compared in the same cylinder area.
  • the amount of air passing through the joint was set equal to that of the single-layer vent. Therefore, the flow of air after passing through the support material can be rectified. This is advantageous for reducing the variation in the detected value of the flow rate sensor arranged on the downstream side of the air cleaner with respect to the air flow, and the flow rate detection accuracy of the flow rate sensor can be improved.
  • FIG. 1 is a diagram illustrating the configuration of the air cleaner according to the first embodiment of the present disclosure.
  • FIG. 2 is a diagram illustrating a punching metal forming the support material.
  • FIG. 3 is a diagram illustrating a welding jig.
  • FIG. 4 is a diagram illustrating an expanded metal forming the support material of the second embodiment.
  • FIG. 5 is a figure which illustrates the structure which made the expanded metal of FIG. 4 cylindrical.
  • FIG. 6 is a diagram exemplifying a configuration of the periphery of the joint portion of the support member of the third embodiment as viewed from the cylinder radial direction.
  • FIG. 7 is a figure which illustrates the state before forming a through-hole into a cylindrical punching metal which comprises a support material.
  • the Z-direction is defined as the cylinder axis direction of the cylindrical support member 4, the ⁇ direction is defined as the cylinder circumferential direction, and the plate-shaped support member 4 before the Z direction is cylindrically formed.
  • the short side direction and the ⁇ direction are defined as the long side direction.
  • the filter paper 3 and the support members 4 and 9 described later have a cylindrical shape. However, even if these members have other shapes such as a rectangular tube shape, the joint portion is formed on the support member 4 or the support member 9. If present, the present disclosure can be applied.
  • the air cleaner 1 removes impurities in the air A that is taken into the vehicle engine.
  • the air cleaner 1 includes a housing 2, a filter paper 3, and support members 4 and 9.
  • the housing 2 is a case in which the filter paper 3 and the supporting materials 4 and 9 are housed inside to protect the filter paper 3 and the supporting materials 4 and 9 from an impact force or the like acting from the outside of the housing 2.
  • the housing 2 has a cylindrical shape having an upper end closed and a lower end opened to communicate with the intake passage 13.
  • the housing 2 has an air inlet 11 for allowing air (intake air) to flow from the atmosphere into the housing 2 on a side surface (cylindrical surface), and a central portion (cavity) 12 for air flowing into the housing 2 at a lower end.
  • An air outlet is provided through which the air flows out to the intake passage 13 on the engine side.
  • the intake passage 13 is provided with a MAF sensor (flow rate sensor) 14 that detects the amount of air A flowing from the air cleaner 1 into the intake passage 13. It is preferable to install the MAF sensor 14 in a location where the flow passage is straight and the inner diameter has a small variation in dimension in the intake pipe (intake passage) 13 for improving accuracy. It may be suitable for the condition. However, when the air cleaner 1 and the MAF sensor 14 are brought close to each other, the above-mentioned variation in the detected values becomes large.
  • the filter paper 3 is a cylindrical filtering device that is installed inside the housing 2 and removes dust and the like contained in the air A that flows in from the air inflow port 11, and is pleated when viewed in the Z direction.
  • the pleats are formed by alternately arranging the portions protruding outward and the portions recessed inward in the cylinder radial direction.
  • the support material (inner liner) 4 is a tubular device installed inside the filter paper 3 in the tubular radial direction.
  • the support material (outer liner) 9 is a tubular device installed outside the filter paper 3 in the tubular radial direction.
  • the filter paper 3 is supported by the support members 4 and 9.
  • the element in which the filter paper 3 and the supporting members 4 and 9 are integrated with each other by urethane foam or the like is called an element 10.
  • the support members 4 and 9 are made of punching metal, and have a large number of air holes 5 through which the air A passing through the filter paper 3 passes in the cylinder radial direction.
  • the support member 4 has a single-layer ventilation portion 6 and a joint portion 7 formed by joining both end portions of the plate material constituting the support member 4 in the ⁇ direction in a stacked state.
  • the ventilation part 6 is a part having a large number of air holes 5 formed in the plate material forming the support material 4.
  • the joint portion 7 has a through hole 8 formed of a plurality of air holes penetrating both ends and a joint frame 15 surrounding the periphery of the through hole 8, and the vent portion when compared in the same cylinder area. 6, the amount of passage of the air A is equal to that of No. 6. In other words, the support member 4 does not have a portion where the air A passage amount is different, and the air A passage amount is substantially equal over the entire area in the ⁇ direction.
  • the joint portion 7 has the same air holes 8 as the air holes 5 formed in the ventilation portion 6 at both ends, and a plurality of air holes 8 formed at one end and the other end.
  • the through holes are formed so that the plurality of air holes 8 formed in the portion coincide with each other in the stacking direction.
  • the distance in the cylinder circumferential direction between the adjacent air holes 8 in the joint portion 7 and the distance in the cylinder circumferential direction between the air holes 8 in the joint portion 7 and the air holes 5 in the ventilation portion 6 adjacent to this air hole 8 are
  • the air holes 5 of the ventilation part 6 are formed to have a distance substantially equal to the distance in the cylinder circumferential direction.
  • the distance between the air holes 8 of the joint portion 7 in the cylinder axis direction is formed to be substantially the same as the distance between the air holes 5 of the ventilation portion 6 in the cylinder axis direction. That is, a large number of substantially the same air holes are evenly formed in the cylinder circumferential direction and the cylinder axis direction of the support member 4.
  • the support member 4 is formed by rolling punching metal into a tubular shape.
  • the punching metal is a metal plate material having a long side in the ⁇ direction and a short side in the Z direction, in which a large number of perforations are formed as air holes 5 and 8.
  • the punching metal has a joining portion 7 that is joined to both end portions in the ⁇ direction in a laminated state, and a ventilation portion 6 in the central portion in the ⁇ direction.
  • the punching metal has a first mark 16 and a second mark 17 formed on each of the joints 7 at both ends.
  • the ventilation part 6 is a part constituted by a large number of air holes 5 arranged at equal intervals in the Z direction and a large number of holes arranged at equal intervals in the ⁇ direction.
  • the air holes 5 may be displaced in the Z direction in the row of holes adjacent to each other in the ⁇ direction.
  • the joining portion 7 is a portion to be joined in a laminated state when the punching metal is rolled into a tubular shape, and like the ventilation portion 6, a large number of air holes 8 are arranged at equal intervals in the Z direction.
  • the holes are arranged at regular intervals in the ⁇ direction.
  • the width between one end in the ⁇ direction of the joint portion 7 and the hole row adjacent to the one end is shorter than the width between the hole rows adjacent in the ⁇ direction in the ventilation portion 6.
  • the ventilation part 6 and the joint part 7 are formed with a large number of air holes 5 and a region 18 surrounded by at least four air holes 5.
  • This region 18 in the joint portion 7 is a region in which a joint point generated when the joint portions 7 at both ends are joined by spot welding is arranged. In the spot welding, an electric current is applied while pressing the region 18 of the joint 7 with an electrode rod, and the resistance heat generated on the contact surface causes melting and solidification in the joint 7 for welding.
  • this region 18 be larger than the area of the spot-shaped welding points 19 formed by spot welding. That is, the width between the air holes 5 and 8 adjacent to each other in the ⁇ direction of the punching metal and the width between the air holes 5 and 8 adjacent to each other in the Z direction should be larger than the width of the welding point 19. Is desirable.
  • the first mark 16 is formed on the lower end surface in the Z direction of the joint 7 at one end in the ⁇ direction of the punching metal.
  • the second mark 17 is formed on the lower end surface in the Z direction of the joint 7 at the other end in the ⁇ direction of the punching metal.
  • the first mark 16 and the second mark 17 may be formed on the end surface of the joint portion 7 in the Z direction, or may be formed on the upper end surface. It is more preferable that the joint 7 is formed on both the upper end surface and the lower end surface in the Z direction.
  • the first mark 16 and the second mark 17 have a function as marks for matching the positions of the air holes 5 when the joint portions 7 are stacked on each other. Specifically, in the state where the joint portions 7 are stacked on each other, when the first mark 16 and the second mark 17 are aligned in the stacking direction when viewed from the Z direction, a plurality of air formed in one joint portion 7 is formed. The hole 8 and the plurality of air holes 8 formed in the other joint portion 7 coincide with each other in the stacking direction.
  • the support material 4 which is formed by rolling a punching metal into a cylindrical shape, has the same amount of passage of the air A per unit area in the entire ⁇ direction.
  • the method of producing the filter paper 3 is a method of sequentially performing the following first to third steps.
  • the filter paper 3 is pleated to form pleats.
  • the filter paper 3 pleated in the first step is cut in a direction orthogonal to the folds to form a plurality of filter papers 3.
  • the filter paper 3 formed by cutting in the second step is rolled and both ends thereof are adhered to form a tubular shape.
  • the plate material is placed on the transport rail of the punching machine, and the plate material is transported to a processing section where a punch for punching is installed above the transport rail. Then, by punching (punching) a large number of perforations in the plate material that has reached the processing portion, air holes 5 and 8 are formed, and punching metal is created.
  • the hole pitch of the punching machine is further adjusted so that the air holes 5 and 8 are uniformly formed in the ⁇ direction and the Z direction of the punching metal, and the air holes 5 and 8 are formed in the entire punching metal.
  • the first mark 16 and the second mark 17 are formed on both ends of the punching metal in the ⁇ direction.
  • the first mark 16 and the second mark 17 are joined in the Z direction as seen in the Z direction.
  • the air A of the laminated portion (joint portion) 7 By laminating both ends of the rolled punching metal, which are laminated by spot welding or the like, to form a tubular shape, when compared in the same tubular area, the air A of the laminated portion (joint portion) 7 The production of the support material 4 in which the passage amount is made equal to the passage amount of the air A of the single layer ventilation part 6 is completed.
  • the air holes 8 may be adjusted by a jig or the like without providing the mark.
  • the support material 9 may be created by the same method as the support material 4, but the air hole 8 does not have to be formed because it is not necessary to provide the air hole 8. Further, the support material 9 itself does not have to be created.
  • This assembling method is a method of sequentially performing the following first to sixth steps.
  • the tubular filter paper 3 is attached to the inside of the support material 9 in the tubular radial direction.
  • the support material 4 is attached to the inside of the tubular filter paper 3 attached in the first step in the tube radial direction.
  • the outlet side is fixed with urethane foam or the like in a shape having a passage so that the cylindrical filter paper 3 and the supporting materials 4 and 9 are integrated.
  • the element 10 is completed by fixing the Z direction in FIG.
  • the urethane foam and the like in the third and fourth steps prevent air leakage at both ends of the filter paper 3, prevent air leakage between the element 10 and the housing 2, and fix the element 10 in the housing 2. It is formed.
  • silicon or hot melt may be applied to the gaps between the filter paper 3 and the support materials 4 and 9 so that the filter paper 3 is securely fixed by the support materials 4 and 9.
  • the element 10 is installed in the housing 2 in the sixth step. As described above, the assembly of the air cleaner 1 is completed, and the air cleaner 1 is completed.
  • pleating may or may not be carried out when the filter paper 3 is produced, it is preferable that the pleats of the filter paper 3 are evenly arranged in the circumferential direction of the support material 4 in the case of carrying out pleating.
  • application of hot melt or the like may or may not be performed, but when it is applied, hot melt or the like is applied so as not to block the air holes 5 and 8 of the support members 4 and 9. It is desirable to do.
  • An adhesive member such as hot melt may block the air holes 5 and 8. Therefore, an adhesive member such as hot melt is applied to the region 18 where the air holes 5 and 8 of the ventilation part 6 and the joint part 7 are not formed, so that the increase of the ventilation resistance in the entire area of the support material 4 can be suppressed. it can.
  • Air A flows in from the air inlet 11 of the air cleaner 1, and the inflowing air A passes through the air holes of the support member 9, the filter paper 3, and the air holes 5 of the support member 4, and is radially inward of the support member 4. Flows to the central part 12 of the.
  • the air A since many substantially the same air holes are uniformly formed in the ⁇ direction and the Z direction of the support member 4, the air A does not become turbulent only in the vicinity of the joint 7 in the central portion 12 and the air cleaner is formed.
  • the air A in the central portion 12 when 1 is viewed from the intake passage 13 side is rectified.
  • the rectified air A flows out from the air outlet to the intake passage 13 side.
  • the single-layer ventilation part 6 in which a large number of air holes 5 are formed and the joint part 7 having the through hole 8 that is laminated and joined are formed, and the same.
  • the amount of air A passing through the multi-layered joint 7 was made equal to that of the single-layer ventilation part 6. Therefore, the flow of the air A after passing through the support material 4 can be rectified. This is advantageous for reducing the variation in the detected value of the flow rate sensor 14 arranged on the downstream side of the air cleaner 1 with respect to the flow of the air A, and the flow rate detection accuracy of the flow rate sensor 14 can be improved.
  • the joint portion 7 has a plurality of air holes 5 formed at one end, in which the same air holes 8 as the air holes 5 formed in the ventilation portion 6 are formed at the same ratio at both ends.
  • the through holes 8 are formed so as to coincide with the plurality of air holes formed at the ends in the stacking direction, so that the amount of passage of the air A in the multi-layered joint portion 7 can be changed to a single-layer ventilation portion. It can be definitely equal to 6.
  • first mark 16 and the second mark 17 are formed at both ends of the joint portion 7, a plurality of air holes 8 formed at one end and a plurality of air holes formed at the other end. Since it becomes easy to stack both end portions of the support material 4 so that the support material 8 and the support material 8 coincide with each other in the stacking direction, it is possible to improve the work efficiency in producing the support material 4.
  • first mark 16 and the second mark 17 are formed on the end faces of the joint portion 7 in the Z direction in the same direction, when the punching metal is rolled up and viewed in the Z direction, it becomes visible, and the functionality as a mark is further improved. Increase.
  • the plate material forming the support member 4 is rolled into a tubular shape, and a plurality of air holes 8 are formed at one end of both ends of the plate material when laminating the both ends in the cylinder circumferential direction. And the plurality of air holes 8 formed at the other end are aligned in the stacking direction and compared in the same cylinder area, the amount of passage of the air A at the stacked portion (joint portion) 7 is determined.
  • the support member 4 which is one component of the air cleaner 1 of the present disclosure can be relatively easily manufactured by joining the layers in the state where the amount of the air A passing through the ventilation portion 6 is equal. As a result, the manufacturing efficiency of the air cleaner 1 of the present disclosure can be improved.
  • a welding jig 20 when forming the joint 7 by superposing the positions of the air holes 8 of the punching metal.
  • the welding jig 20 is configured such that a plurality of protrusions 21 that can be inserted into the air holes 8 are arranged at the same intervals as the lengths between the adjacent air holes 8 in the punching metal forming the support member 4.
  • the plurality of convex portions 21 of the welding jig 20 are inserted into the plurality of overlapped air holes 8 and aligned. Then, it becomes possible to weld the superposed air holes 8 without shifting.
  • the welding jig 20 it is possible to easily form the joint portion 7 in which the air holes 8 are overlapped.
  • the air cleaner 1 of the second embodiment is different in that the support member 4 of the air cleaner 1 of the first embodiment is made of expanded metal instead of punching metal, and has the same configuration in other points. ..
  • Expanded metal has a large number of holes in the shape of a rhombus or a carved shell formed by expanding staggered cuts as air holes 5 in a metal plate material whose longitudinal direction is in the ⁇ direction and short direction is in the Z direction. It has a mesh shape.
  • the expanded metal as in the first embodiment, a large number of air holes 5 and 8 and a region 18 surrounded by at least four air holes 5 and 8 are formed in the ventilation portion 6 and the joint portion 7. ing. That is, in the expanded metal, the metal portion that constitutes the mesh (the metal portion that surrounds the periphery of the hole that forms the diamond shape or the hexagonal shape) is the same as the area 18 in the first embodiment. That is, the expanded metal has a mesh-like shape in which a large number of holes having a diamond shape or a hexagonal shape surrounded by a metal portion having a width larger than the spot-shaped welding point 19 formed by spot welding are formed.
  • a method of creating the support material 4 of this embodiment will be described. First, using a mesh manufacturing machine, cuts are made in a zigzag arrangement on the upper side and the lower side in the width direction of the metal plate material. Then, the plate material with the cuts is stretched in the width direction to prepare a mesh-shaped expanded metal having a large number of rhombic or hexagonal holes.
  • the expanded metal prepared in the same manner as in the first embodiment is rolled and the joining portions 7 at both ends in the ⁇ direction are laminated and joined by spot welding or the like to form a tubular shape. Note that in FIG. 5, for simplification, the illustration of the mesh-shaped holes is omitted.
  • the support material 4 when the support material 4 is formed, when the expanded metal, which is a metal plate material, is rolled and one end and the other end of both ends in the ⁇ direction are stacked, the air holes 8 formed at one end are The expanded metal is rolled so that the air holes 8 formed at the other end coincide with each other in the stacking direction. Both ends of the rolled expanded metal that are laminated are joined together by spot welding (reference numeral 19 in FIG. 5 indicates a spot welded portion) to form a tubular shape, and when compared in the same tubular area, Preparation of the support member 4 in which the amount of air A passing through the laminated portion (joint portion) 7 is made equal to the amount of air A passing through the single-layer ventilation portion 6 is completed.
  • spot welding reference numeral 19 in FIG. 5 indicates a spot welded portion
  • the air cleaner 1 of the third embodiment is different from the air cleaner 1 of the first embodiment in that a single through hole 8 is formed in the joint portion 7 of the support member 4, and other points. Then it is the same composition.
  • the area of this through hole 8 is made larger than the area of the air hole 5 formed in the ventilation part 6.
  • the amount of air A passing through the through hole 8 is equal to the amount of air A passing through the single-layer ventilation portion 6 when compared in the same cylinder area. It is sufficient that the area of the through hole 8 is larger than the area of the air hole 5, and a plurality of through holes 8 are formed in the joint portion 7 so that the joint portion 7 and the single-layer ventilation portion 6 can pass through the same amount. May be.
  • the method of producing the support material 4 of the third embodiment differs from the method of producing the support material 4 of the first embodiment in the following points. That is, in the third embodiment, the hole pitch of the punching machine is adjusted, a large number of air holes 5 are formed only in the central portion of the plate material to form the ventilation portion 6, and the punching metal in which the ventilation portion 6 is formed is rounded.
  • the punching metal is formed into a tubular shape, and both ends of the punching metal in the ⁇ direction are stacked and joined by spot welding or the like to form a joint 7, and then a single through hole 8 is formed in the joint 7. Then, the support material 4 is created.
  • the through holes 8 are formed so that the amount of air A passing through the joint portion 7 is equal to the amount of air A passing through the ventilation portion 6 when compared in the same cylinder area.
  • the welding point 19 of the joint is formed in the region of the joint 7 other than the place where the through hole 8 is formed.
  • the punching metal forming the support member 4 of this embodiment has a uniform pitch d between the adjacent air holes 5, 8A, 8B and a diameter D of the air holes 5, 8A, 8B. Is preferably smaller than this pitch d, and more preferably the diameter D of the air holes 5, 8A, 8B is half or less of this pitch d.
  • this punching metal three adjacent air holes 5, 8A, 8B are arranged in an equilateral triangle shape whose sides have an equal pitch d. It is sufficient that the air holes 5, 8A, 8B adjacent to each other have an equal pitch d, and the arrangement of the air holes 5, 8A, 8B is not particularly limited. For example, four air holes 5, 8A, 8B adjacent to each other may be arranged in a square shape whose sides have equal pitches d.
  • the punching metal in which the diameter D of the air holes 5, 8A, 8B is smaller than the pitch d is used in the joining portion 7 formed by laminating both end portions in the cylinder circumferential direction when laminating the both ends in the tubular shape.
  • the air holes 8A formed at one end and the air holes 8B formed at the other end do not overlap in the stacking direction. That is, the air holes 8B formed at the other end are arranged between the air holes 8A formed at the one end. In other words, one air hole 8B at the other end is arranged inside the diamond-shaped region formed by the four adjacent air holes 8A at the one end.
  • the air holes 8A at one end and the air holes 8B at the other end at the joining portion 7 may be arranged so as to be offset from each other.
  • the through holes 8 are formed.
  • the through holes 8 are formed in the joint portion 7 so that the amount of air passing through the joint portion 7 and the ventilation portion 6 becomes equal to each other. It is possible to save the trouble of overlapping 8B with each other, and it is possible to improve the work efficiency when manufacturing the support material 4.
  • the support member 4 arranged inside the element 3 has been described, but the support member 9 arranged outside the element 3 may be provided with a joint having a through hole. Further, it may be formed on both the support members 4 and 9.
  • the supporting material 4 instead of using the punching metal or the expanded metal composed of the metal plate material as described above, a material composed of a resin member may be used.
  • the present invention has an effect that the detection accuracy of the flow rate can be improved, and is useful for an air cleaner and its manufacturing method.
  • Air cleaner 2 Housing 3 Filter paper 4 Support material (inner liner) 5 Air hole 6 Vent part 7 Joint part 8 Air hole 9 Support material (outer liner) 10 elements

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Materials (AREA)

Abstract

An air cleaner comprising a casing 2, cylindrical filter paper 3 that is installed on the interior of the casing 2, and a cylindrical support member 4 that is installed on the inside or the outside of the filter paper 3 in the cylinder radial direction, supports the filter paper 3, and has a plurality of air holes 5 whereby air A that has traversed the filter paper 3 is conveyed in the cylinder radial direction, said air cleaner being characterized in that: the support member 4 has a singe-layer air conveyance section 6 and a joined section 7 where both cylinder peripheral direction end parts of the plate member constituting the cylinder member 4 are joined in a layered state; the air conveyance section 6 has a plurality of air holes 5 formed therein; the joined section 7 has a through hole 8 that traverses both end parts and a joining frame 15 that surrounds the periphery of the through hole 8; and the joined section 7 conveys the same amount of air A as the air conveyance section 6 when at equal cylinder surface areas.

Description

エアクリーナ及びその製造方法Air cleaner and manufacturing method thereof
　本開示は、エアクリーナ及びその製造方法に関し、より詳細には、流量の検出精度を向上させるエアクリーナ及びその製造方法に関する。 The present disclosure relates to an air cleaner and a method of manufacturing the same, and more particularly, to an air cleaner that improves detection accuracy of a flow rate and a method of manufacturing the same.
　エンジンのエアクリーナとして、筐体の内部に設置された筒状の濾紙と、この濾紙の筒径方向内側又は外側に設置されてこの濾紙を支持する筒状の支持材とを備えたものが提案されている（例えば、特許文献１を参照）。 As an engine air cleaner, a filter provided with a tubular filter paper installed inside the casing and a tubular support member installed inside or outside of the filter paper in the cylinder radial direction to support the filter paper is proposed. (For example, see Patent Document 1).
日本国特開２００１－１３２５６２号公報Japanese Patent Laid-Open No. 2001-132562
　ところで、特許文献１に記載のエアクリーナの支持材は、濾紙を支持すると共に濾紙を通過後の空気が通過するように、パンチングメタルやエキスパンドメタルから構成されている。具体的に、支持材は、それらの板材を丸めて筒周方向の両端部を積層して接合することで筒状を成している。 By the way, the support material of the air cleaner described in Patent Document 1 is made of punching metal or expanded metal so as to support the filter paper and allow the air after passing through the filter paper to pass through. Specifically, the support material has a tubular shape by rolling these plate materials and stacking and joining both end portions in the cylinder circumferential direction.
　しかし、積層して接合した部位がそれ以外の部位に対して空気の流れを阻害しており、支持材には、筒周方向の一部に、空気の流れを阻害する部位が形成されることになる。この空気の流れを阻害する部位が筒周方向の一部に形成されることにより、空気の流れに関してエアクリーナの下流側に配置された流量センサの検出値がばらつき、流量の検出精度が低下していた。特に、流量センサは吸気管の中で流路がストレートで内径の寸法ばらつきが少ない場所に設置することが精度向上に好ましいが、車両のレイアウトの制約のためエアクリーナの直後がその条件に適している場合がある。しかし、エアクリーナと流量センサとを近接させると、前述の検出値のばらつきは大きくなる。 However, the parts that are laminated and joined obstruct the air flow with respect to the other parts, and the part that obstructs the air flow is formed in a part of the support material in the cylinder circumferential direction. become. By forming the part that obstructs the air flow in a part in the cylinder circumferential direction, the detection value of the flow rate sensor arranged on the downstream side of the air cleaner with respect to the air flow varies, and the flow rate detection accuracy decreases. It was In particular, it is preferable to install the flow rate sensor in a location where the flow path is straight and the inner diameter has little variation in the intake pipe for accuracy improvement, but due to vehicle layout restrictions, the condition immediately after the air cleaner is suitable for that condition. There are cases. However, when the air cleaner and the flow rate sensor are brought close to each other, the above-mentioned variation in the detected value becomes large.
　本開示の目的は、空気の流れに関して下流側に配置された流量センサの検出値のばらつきを低減して、流量の検出精度を向上させることができるエアクリーナ及びその製造方法を提供することである。 An object of the present disclosure is to provide an air cleaner that can improve the detection accuracy of the flow rate by reducing the variation in the detection value of the flow rate sensor arranged on the downstream side with respect to the air flow, and a manufacturing method thereof.
　上記の目的を達成する本開示のエアクリーナは、筐体と、この筐体の内部に設置された筒状の濾紙と、この濾紙の筒径方向内側又は外側に設置されてこの濾紙を支持する筒状の支持材と、を備えて、その支持材が、前記濾紙を通過した空気が筒径方向に通過する多数の空気穴が形成されてなるエアクリーナにおいて、前記支持材は、単層の通気部と、この支持材を構成する板材の筒周方向の両端部が積層した状態で接合されてなる接合部と、を有して、前記通気部は、多数の前記空気穴が形成されてなり、前記接合部は、前記両端部を貫通した貫通孔とこの貫通孔の周囲を囲繞する接合枠とを有して、同一筒面積で比較したときに前記通気部に対して空気の通過量が等しくなることを特徴とする。 An air cleaner according to an embodiment of the present disclosure that achieves the above object is a casing, a cylindrical filter paper installed inside the casing, and a cylinder installed inside or outside of the filter paper in the cylinder radial direction to support the filter paper. An air cleaner comprising a plurality of air holes through which the air passing through the filter paper passes in a cylinder radial direction, the support material being a single layer ventilation part. And a joining portion formed by joining both ends of the plate material constituting the supporting member in the cylinder circumferential direction in a laminated state, the ventilation portion is formed with a large number of the air holes, The joint portion has a through hole penetrating the both ends and a joint frame surrounding the periphery of the through hole, and the amount of air passing through the ventilation portion is equal when compared in the same cylinder area. It is characterized by
　また、上記の目的を達成する本開示のエアクリーナの製造方法は、筐体の内部に筒状に形成されてなる支持材を設置し、その支持材の筒径方向内側又は外側に筒状に形成されてなる濾紙を設置したエアクリーナの製造方法において、板材に前記濾紙を通過した空気が通過可能な空気穴を多数穿ち、前記板材を丸めて筒状に形成すると共に、その板材の筒周方向の両端部を積層させるときにその両端部のうちの一端部に形成された複数の前記空気穴と、他端部に形成された複数の前記空気穴とが積層方向において一致させて貫通孔を形成し、同一筒面積で比較したときに、その積層させた部位の空気の通過量を単層の通気部と等しくした状態で接合して、前記支持材を作成することを特徴とする。 Further, in the method for manufacturing an air cleaner of the present disclosure that achieves the above object, a support member formed in a cylindrical shape is installed inside a housing, and the support member is formed in a cylindrical shape inside or outside in the cylinder radial direction. In a method of manufacturing an air cleaner having a filter paper installed therein, a plate material is formed with a large number of air holes through which the air passing through the filter paper can pass, and the plate material is formed into a cylindrical shape by rolling the plate material in a cylinder circumferential direction. When stacking both ends, the plurality of air holes formed at one end of the both ends and the plurality of air holes formed at the other end are aligned in the stacking direction to form a through hole. Then, when compared in the same cylinder area, the support member is produced by joining the laminated portions in a state where the air passage amount is equal to that of the single layer ventilation portion.
　あるいは、上記の目的を達成する本開示のエアクリーナの製造方法は、筐体の内部に筒状に形成されてなる支持材を設置し、その支持材の筒径方向内側又は外側に筒状に形成されてなる濾紙を設置したエアクリーナの製造方法において、板材の中央部に前記濾紙を通過した空気が通過可能な空気穴を多数穿って通気部を形成し、前記板材を丸めて筒状に形成すると共に、その板材の筒周方向の両端部を積層させて接合して接合部を形成し、前記接合部に、同一筒面積で比較したときに、前記接合部の空気の通過量を前記通気部の空気の通過量と等しくする貫通孔を形成して、前記支持材を作成することを特徴とする。 Alternatively, in the method for manufacturing an air cleaner of the present disclosure that achieves the above object, a support member formed in a tubular shape is installed inside a housing, and the support member is formed in a tubular shape inside or outside in a tubular radial direction. In the method of manufacturing an air cleaner having a filter paper formed therein, a plurality of air holes, through which the air passing through the filter paper can pass, are formed in the central portion of the plate member to form a ventilation portion, and the plate member is rolled into a tubular shape. Together, both ends of the plate material in the cylinder circumferential direction are laminated and joined to form a joint portion, and when the joint portion is compared in the same cylinder area, the amount of air passing through the joint portion is changed to the ventilation portion. It is characterized in that the support material is prepared by forming a through hole equal to the passage amount of the air.
　本開示によれば、多数の空気穴が形成されてなる単層の通気部と、積層して接合された貫通孔を有する接合部を形成して、同一筒面積で比較したときに複層の接合部の空気の通過量を単層の通気部に対して等しくした。それ故、支持材を通過した後の空気の流れを整流することができる。これにより、空気の流れに関してエアクリーナの下流側に配置された流量センサの検出値のばらつきを低減するには有利になり、流量センサによる流量の検出精度を向上させることができる。 According to the present disclosure, a single-layer ventilation part formed with a large number of air holes and a joint part having a through hole that is laminated and joined are formed, and a plurality of layers are formed when compared in the same cylinder area. The amount of air passing through the joint was set equal to that of the single-layer vent. Therefore, the flow of air after passing through the support material can be rectified. This is advantageous for reducing the variation in the detected value of the flow rate sensor arranged on the downstream side of the air cleaner with respect to the air flow, and the flow rate detection accuracy of the flow rate sensor can be improved.
図１は、本開示の第１実施形態のエアクリーナの構成を例示する図である。FIG. 1 is a diagram illustrating the configuration of the air cleaner according to the first embodiment of the present disclosure. 図２は、支持材を構成するパンチングメタルを例示する図である。FIG. 2 is a diagram illustrating a punching metal forming the support material. 図３は、溶接用治具を例示する図である。FIG. 3 is a diagram illustrating a welding jig. 図４は、第２実施形態の支持材を構成するエキスパンドメタルを例示する図である。FIG. 4 is a diagram illustrating an expanded metal forming the support material of the second embodiment. 図５は、図４のエキスパンドメタルを筒状にした構成を例示する図である。FIG. 5: is a figure which illustrates the structure which made the expanded metal of FIG. 4 cylindrical. 図６は、第３実施形態の支持材の接合部周辺を筒径方向からみた構成を例示する図である。FIG. 6 is a diagram exemplifying a configuration of the periphery of the joint portion of the support member of the third embodiment as viewed from the cylinder radial direction. 図７は、支持材を構成するパンチングメタルを筒状にして貫通孔を形成する前の状態を例示する図である。FIG. 7: is a figure which illustrates the state before forming a through-hole into a cylindrical punching metal which comprises a support material.
　以下、本開示のエアクリーナ及びその製造方法について図に示した実施形態に基づいて説明する。なお、本実施形態では、Ｚ方向を筒状に形成された支持材４の筒軸方向、α方向を筒周方向とすると共に、Ｚ方向を筒状に形成する前の板状の支持材４における短手方向、α方向を長手方向とする。また、本実施形態では、後述する濾紙３、支持材４、９を円筒形状としているが、例えばこれらの部材を角筒形状等の他の形状としても支持材４または支持材９に接合部があれば本開示を適用することができる。 Hereinafter, the air cleaner of the present disclosure and the manufacturing method thereof will be described based on the embodiment shown in the drawings. In the present embodiment, the Z-direction is defined as the cylinder axis direction of the cylindrical support member 4, the α direction is defined as the cylinder circumferential direction, and the plate-shaped support member 4 before the Z direction is cylindrically formed. The short side direction and the α direction are defined as the long side direction. Further, in the present embodiment, the filter paper 3 and the support members 4 and 9 described later have a cylindrical shape. However, even if these members have other shapes such as a rectangular tube shape, the joint portion is formed on the support member 4 or the support member 9. If present, the present disclosure can be applied.
　図１に示すように、本開示の第１実施形態のエアクリーナ１は、車両用のエンジンに吸入される空気Ａの不純物を取り除くものである。エアクリーナ１は、筐体２と、濾紙３と、支持材４、９とを備えている。 As shown in FIG. 1, the air cleaner 1 according to the first embodiment of the present disclosure removes impurities in the air A that is taken into the vehicle engine. The air cleaner 1 includes a housing 2, a filter paper 3, and support members 4 and 9.
　筐体２は、その内部に濾紙３及び支持材４、９を収納して、濾紙３及び支持材４、９を筐体２の外部から作用する衝撃力等から保護するケースである。筐体２は、上端が閉口し、下端が開口して吸気通路１３に連通した筒状を成している。筐体２には、側面（筒面）に大気から筐体２内部に空気（吸気）を流入させる空気流入口１１と、下端に筐体２内部に流入された空気を中心部（空洞）１２を介してエンジン側の吸気通路１３に流出させる空気流出口が設けられる。 The housing 2 is a case in which the filter paper 3 and the supporting materials 4 and 9 are housed inside to protect the filter paper 3 and the supporting materials 4 and 9 from an impact force or the like acting from the outside of the housing 2. The housing 2 has a cylindrical shape having an upper end closed and a lower end opened to communicate with the intake passage 13. The housing 2 has an air inlet 11 for allowing air (intake air) to flow from the atmosphere into the housing 2 on a side surface (cylindrical surface), and a central portion (cavity) 12 for air flowing into the housing 2 at a lower end. An air outlet is provided through which the air flows out to the intake passage 13 on the engine side.
　吸気通路１３にはエアクリーナ１から吸気通路１３に流出する空気Ａの量を検出するＭＡＦセンサ（流量センサ）１４が設けられる。ＭＡＦセンサ１４は、吸気管（吸気通路）１３の中で流路がストレートで内径の寸法ばらつきが少ない場所に設置することが精度向上に好ましいが、車両のレイアウトの制約のためエアクリーナ１の直後がその条件に適している場合がある。しかし、エアクリーナ１とＭＡＦセンサ１４を近接させると、前述の検出値のばらつきは大きくなる。 The intake passage 13 is provided with a MAF sensor (flow rate sensor) 14 that detects the amount of air A flowing from the air cleaner 1 into the intake passage 13. It is preferable to install the MAF sensor 14 in a location where the flow passage is straight and the inner diameter has a small variation in dimension in the intake pipe (intake passage) 13 for improving accuracy. It may be suitable for the condition. However, when the air cleaner 1 and the MAF sensor 14 are brought close to each other, the above-mentioned variation in the detected values becomes large.
　濾紙３は、筐体２の内部に設置されて、空気流入口１１から流入される空気Ａに含まれる塵等を除去する筒状の濾過装置で、Ｚ方向から見てプリーツ加工により筒径方向外側に突出した部分と筒径方向内側に窪んだ部分とが交互に配置されたひだが形成されている。支持材（インナーライナー）４は、濾紙３の筒径方向内側に設置される筒状の装置である。支持材（アウターライナー）９は、濾紙３の筒径方向外側に設置される筒状の装置である。支持材４、９により濾紙３は支持される。濾紙３と支持材４、９を発泡ウレタン等で一体化したものはエレメント１０と称される。図２に例示するように、支持材４、９はパンチングメタルで構成され、濾紙３を通過した空気Ａが筒径方向に通過する多数の空気穴５が形成されている。 The filter paper 3 is a cylindrical filtering device that is installed inside the housing 2 and removes dust and the like contained in the air A that flows in from the air inflow port 11, and is pleated when viewed in the Z direction. The pleats are formed by alternately arranging the portions protruding outward and the portions recessed inward in the cylinder radial direction. The support material (inner liner) 4 is a tubular device installed inside the filter paper 3 in the tubular radial direction. The support material (outer liner) 9 is a tubular device installed outside the filter paper 3 in the tubular radial direction. The filter paper 3 is supported by the support members 4 and 9. The element in which the filter paper 3 and the supporting members 4 and 9 are integrated with each other by urethane foam or the like is called an element 10. As illustrated in FIG. 2, the support members 4 and 9 are made of punching metal, and have a large number of air holes 5 through which the air A passing through the filter paper 3 passes in the cylinder radial direction.
　本開示のエアクリーナ１では、支持材４は、単層の通気部６と、この支持材４を構成する板材のα方向の両端部が積層した状態で接合されてなる接合部７とを有している。通気部６は、支持材４を構成する板材に形成されていた多数の空気穴５を有する部位である。接合部７は、両端部を貫通した複数の空気穴で構成される貫通孔８とこの貫通孔８の周囲を囲繞する接合枠１５とを有して、同一筒面積で比較したときに通気部６に対して空気Ａの通過量が等しくなる構成である。言い換えれば、支持材４は空気Ａの通過量が異なる部位が存在せず、α方向の全域に渡って空気Ａの通過量が略等しくなる。 In the air cleaner 1 of the present disclosure, the support member 4 has a single-layer ventilation portion 6 and a joint portion 7 formed by joining both end portions of the plate material constituting the support member 4 in the α direction in a stacked state. ing. The ventilation part 6 is a part having a large number of air holes 5 formed in the plate material forming the support material 4. The joint portion 7 has a through hole 8 formed of a plurality of air holes penetrating both ends and a joint frame 15 surrounding the periphery of the through hole 8, and the vent portion when compared in the same cylinder area. 6, the amount of passage of the air A is equal to that of No. 6. In other words, the support member 4 does not have a portion where the air A passage amount is different, and the air A passage amount is substantially equal over the entire area in the α direction.
　接合部７は、両端部のそれぞれに通気部６に形成された空気穴５と同一の空気穴８が同一の割合で形成されて、一端部に形成された複数の空気穴８と、他端部に形成された複数の空気穴８とが積層方向において一致して貫通孔を形成してなる構成である。 The joint portion 7 has the same air holes 8 as the air holes 5 formed in the ventilation portion 6 at both ends, and a plurality of air holes 8 formed at one end and the other end. The through holes are formed so that the plurality of air holes 8 formed in the portion coincide with each other in the stacking direction.
　接合部７における隣接する空気穴８の間の筒周方向の距離と、接合部７の空気穴８とこの空気穴８に隣接する通気部６の空気穴５の間の筒周方向の距離は、通気部６の各空気穴５の間の筒周方向の距離とほぼ同距離となるように形成される。接合部７の各空気穴８の間の筒軸方向の距離は、通気部６の各空気穴５の間の筒軸方向の距離とほぼ同距離となる様に形成される。すなわち、支持材４の筒周方向及び筒軸方向で多数のほぼ同じ空気穴が均等に形成される。 The distance in the cylinder circumferential direction between the adjacent air holes 8 in the joint portion 7 and the distance in the cylinder circumferential direction between the air holes 8 in the joint portion 7 and the air holes 5 in the ventilation portion 6 adjacent to this air hole 8 are The air holes 5 of the ventilation part 6 are formed to have a distance substantially equal to the distance in the cylinder circumferential direction. The distance between the air holes 8 of the joint portion 7 in the cylinder axis direction is formed to be substantially the same as the distance between the air holes 5 of the ventilation portion 6 in the cylinder axis direction. That is, a large number of substantially the same air holes are evenly formed in the cylinder circumferential direction and the cylinder axis direction of the support member 4.
　図２に例示するように、支持材４はパンチングメタルを丸めて筒状に形成して構成される。パンチングメタルは、長手方向がα方向に、短手方向がＺ方向に向いてなる金属板材に空気穴５、８として多数の穿孔が形成されたものである。具体的に、パンチングメタルは、α方向の両端部に互いに積層した状態で接合される接合部７と、α方向の中央部に通気部６とが配置されている。また、パンチングメタルは、両端部の接合部７のそれぞれに第一目印１６と第二目印１７とが形成されている。 As illustrated in FIG. 2, the support member 4 is formed by rolling punching metal into a tubular shape. The punching metal is a metal plate material having a long side in the α direction and a short side in the Z direction, in which a large number of perforations are formed as air holes 5 and 8. Specifically, the punching metal has a joining portion 7 that is joined to both end portions in the α direction in a laminated state, and a ventilation portion 6 in the central portion in the α direction. The punching metal has a first mark 16 and a second mark 17 formed on each of the joints 7 at both ends.
　通気部６は、多数の空気穴５がＺ方向に等間隔に配置された多数の穴列がα方向に等間隔に配置されて構成された部位である。通気部６において、α方向に隣り合う穴列で空気穴５がＺ方向にずれていてもよい。 The ventilation part 6 is a part constituted by a large number of air holes 5 arranged at equal intervals in the Z direction and a large number of holes arranged at equal intervals in the α direction. In the ventilation part 6, the air holes 5 may be displaced in the Z direction in the row of holes adjacent to each other in the α direction.
　接合部７は、パンチングメタルを丸めて筒状に形成したときに積層した状態で接合される部位であり、通気部６と同様に多数の空気穴８がＺ方向に等間隔に配置された多数の穴列がα方向に等間隔に配置されて構成された部位である。接合部７におけるα方向の一端とその一端に隣接する穴列との間の幅は、通気部６におけるα方向に隣り合う穴列の間の幅よりも短い。このように構成することで、両端部の接合部７を互いに積層したときに、筒径方向に見て、通気部６の穴列と接合部７の筒径方向に重なった穴列の間にその一端が配置されることになり、空気穴８が塞がれることを回避するには有利になる。 The joining portion 7 is a portion to be joined in a laminated state when the punching metal is rolled into a tubular shape, and like the ventilation portion 6, a large number of air holes 8 are arranged at equal intervals in the Z direction. The holes are arranged at regular intervals in the α direction. The width between one end in the α direction of the joint portion 7 and the hole row adjacent to the one end is shorter than the width between the hole rows adjacent in the α direction in the ventilation portion 6. With such a configuration, when the joining portions 7 at both ends are stacked, when viewed in the cylinder radial direction, the gap between the row of holes of the ventilation portion 6 and the row of overlapping holes of the joining portion 7 in the cylinder radial direction is seen. One end thereof is arranged, which is advantageous in avoiding that the air hole 8 is blocked.
　通気部６及び接合部７は、多数の空気穴５と、少なくとも４つの空気穴５により周囲を囲繞された領域１８とが形成されている。接合部７におけるこの領域１８は、スポット溶接により両端部の接合部７どうしを接合したときに生じる接合点が配置される領域である。スポット溶接は、接合部７のその領域１８を電極棒で加圧しつつ電流を流し、その接触面に発生する抵抗熱により接合部７に溶解凝固を起こさせて溶接するものである。 The ventilation part 6 and the joint part 7 are formed with a large number of air holes 5 and a region 18 surrounded by at least four air holes 5. This region 18 in the joint portion 7 is a region in which a joint point generated when the joint portions 7 at both ends are joined by spot welding is arranged. In the spot welding, an electric current is applied while pressing the region 18 of the joint 7 with an electrode rod, and the resistance heat generated on the contact surface causes melting and solidification in the joint 7 for welding.
　この領域１８の面積は、スポット溶接により形成された点状の溶接点１９の面積よりも広くすることが望ましい。つまり、パンチングメタルのα方向に隣り合う空気穴５、８どうしの間の幅と、Ｚ方向に隣り合う空気穴５、８どうしの間の幅はそれぞれ、溶接点１９の幅よりも広くすることが望ましい。 It is desirable that the area of this region 18 be larger than the area of the spot-shaped welding points 19 formed by spot welding. That is, the width between the air holes 5 and 8 adjacent to each other in the α direction of the punching metal and the width between the air holes 5 and 8 adjacent to each other in the Z direction should be larger than the width of the welding point 19. Is desirable.
　第一目印１６は、パンチングメタルのα方向の一端部の接合部７のＺ方向の下端面に形成されている。第二目印１７は、パンチングメタルのα方向の他端部の接合部７のＺ方向の下端面に形成されている。第一目印１６及び第二目印１７は、接合部７のＺ方向の端面に形成されていればよく、上端面に形成されていてもよい。なお、接合部７のＺ方向の上端面及び下端面の両方に形成されることがより好ましい。 The first mark 16 is formed on the lower end surface in the Z direction of the joint 7 at one end in the α direction of the punching metal. The second mark 17 is formed on the lower end surface in the Z direction of the joint 7 at the other end in the α direction of the punching metal. The first mark 16 and the second mark 17 may be formed on the end surface of the joint portion 7 in the Z direction, or may be formed on the upper end surface. It is more preferable that the joint 7 is formed on both the upper end surface and the lower end surface in the Z direction.
　第一目印１６及び第二目印１７は、接合部７が互いに積層したときの空気穴５の位置を一致させる目印としての機能を有する。具体的に、接合部７が互いに積層した状態で、Ｚ方向から見て第一目印１６と第二目印１７とが積層方向に一致したときに、一方の接合部７に形成された複数の空気穴８と、他方の接合部７に形成された複数の空気穴８とが積層方向において一致する。 The first mark 16 and the second mark 17 have a function as marks for matching the positions of the air holes 5 when the joint portions 7 are stacked on each other. Specifically, in the state where the joint portions 7 are stacked on each other, when the first mark 16 and the second mark 17 are aligned in the stacking direction when viewed from the Z direction, a plurality of air formed in one joint portion 7 is formed. The hole 8 and the plurality of air holes 8 formed in the other joint portion 7 coincide with each other in the stacking direction.
　パンチングメタルを丸めて筒状に形成されて構成された支持材４は、α方向の全域において単位面積当たりの空気Ａの通過量が等しい。 The support material 4, which is formed by rolling a punching metal into a cylindrical shape, has the same amount of passage of the air A per unit area in the entire α direction.
　エアクリーナ１の製造方法について説明する。この製造方法は、濾紙３の作成方法、支持材４の作成方法、エアクリーナ１の組み付け方法の３つの方法に大別される。濾紙３の作成方法は、以下の第１～３工程を順に行う方法である。第１工程では、濾紙３をプリーツ加工してひだを形成する。第２工程では、第１工程でプリーツ加工した濾紙３をひだに直交する方向に切断して複数枚の濾紙３を形成する。第３工程では、第２工程で切断して形成された濾紙３を丸めてその両端部を接着して、筒状に形成する。 Explain the manufacturing method of the air cleaner 1. This manufacturing method is roughly classified into three methods, that is, a method for producing the filter paper 3, a method for producing the support material 4, and a method for assembling the air cleaner 1. The method of producing the filter paper 3 is a method of sequentially performing the following first to third steps. In the first step, the filter paper 3 is pleated to form pleats. In the second step, the filter paper 3 pleated in the first step is cut in a direction orthogonal to the folds to form a plurality of filter papers 3. In the third step, the filter paper 3 formed by cutting in the second step is rolled and both ends thereof are adhered to form a tubular shape.
　次に、支持材４の作成方法について説明する。まず、打ち抜き加工機の搬送レール上に板材を置き、打ち抜き加工用のパンチを搬送レールの上部に設置した加工部まで板材を搬送する。そして、加工部に到達した板材にパンチで多数の穿孔を穿つ（打ち抜く）ことで、空気穴５、８を形成してパンチングメタルは作成される。 Next, a method of creating the support material 4 will be described. First, the plate material is placed on the transport rail of the punching machine, and the plate material is transported to a processing section where a punch for punching is installed above the transport rail. Then, by punching (punching) a large number of perforations in the plate material that has reached the processing portion, air holes 5 and 8 are formed, and punching metal is created.
　本開示では、さらに、打ち抜き加工機の穴ピッチを調整して、パンチングメタルのα方向及びＺ方向に空気穴５、８を均等に形成しつつ、パンチングメタルの全域に空気穴５、８を形成する。次いで、パンチングメタルのα方向の両端部に第一目印１６及び第二目印１７を形成する。次いで、パンチングメタルを丸めて両端部の接合部７を積層したときに、第一目印１６及び第二目印１７をＺ方向に見て積層方向に一致させて接合する。 In the present disclosure, the hole pitch of the punching machine is further adjusted so that the air holes 5 and 8 are uniformly formed in the α direction and the Z direction of the punching metal, and the air holes 5 and 8 are formed in the entire punching metal. To do. Next, the first mark 16 and the second mark 17 are formed on both ends of the punching metal in the α direction. Next, when the punching metal is rolled and the joining portions 7 at both ends are laminated, the first mark 16 and the second mark 17 are joined in the Z direction as seen in the Z direction.
　この丸めたパンチングメタルの積層された両端部をスポット溶接等により接合して筒状に形成することで、同一筒面積で比較したときに、その積層させた部位（接合部）７の空気Ａの通過量を単層の通気部６の空気Ａの通過量と等しくした支持材４の作成が完了する。目印を設けずに治具等により空気穴８が重なるように調整しても良い。 By laminating both ends of the rolled punching metal, which are laminated by spot welding or the like, to form a tubular shape, when compared in the same tubular area, the air A of the laminated portion (joint portion) 7 The production of the support material 4 in which the passage amount is made equal to the passage amount of the air A of the single layer ventilation part 6 is completed. The air holes 8 may be adjusted by a jig or the like without providing the mark.
　なお、支持材９についても支持材４と同様の方法で作成してもよいが、空気穴８を設ける必要性がないため空気穴８は形成しなくてもよい。また、支持材９自体を作成しなくてもよい。 Note that the support material 9 may be created by the same method as the support material 4, but the air hole 8 does not have to be formed because it is not necessary to provide the air hole 8. Further, the support material 9 itself does not have to be created.
　次に、筒状の濾紙３、支持材４、９を作成後、エアクリーナ１の組み付けを行う。この組み付け方法は以下の第１～６工程を順に行う方法である。第１工程では、支持材９の筒径方向内側に筒状の濾紙３を取り付ける。第２工程では、第１工程で取り付けた筒状の濾紙３の筒径方向内側に支持材４を取り付ける。第３工程では、筒状の濾紙３、支持材４、９が一体化するよう出口側を通路を設けた形状で発泡ウレタン等で固定する。第４工程では、濾紙３、支持材４、９が一体化するように図１Ｚ方向を発泡ウレタン等で固定しエレメント１０は完成する。この第３、４工程の発泡ウレタン等は濾紙３の両端部のエア漏れを防止し、エレメント１０と筐体２間のエア漏れを防止し、エレメント１０が筐体２内で固定される形状に形成される。第５工程では、濾紙３と支持材４、９の間の隙間にシリコンやホットメルトを塗布して、濾紙３が支持材４、９により確実に固定されるようにしても良い。第６工程でエレメント１０が筐体２内に設置される。以上で、エアクリーナ１の組み付けが完了して、エアクリーナ１は完成する。 Next, after making the cylindrical filter paper 3 and the supporting materials 4 and 9, the air cleaner 1 is assembled. This assembling method is a method of sequentially performing the following first to sixth steps. In the first step, the tubular filter paper 3 is attached to the inside of the support material 9 in the tubular radial direction. In the second step, the support material 4 is attached to the inside of the tubular filter paper 3 attached in the first step in the tube radial direction. In the third step, the outlet side is fixed with urethane foam or the like in a shape having a passage so that the cylindrical filter paper 3 and the supporting materials 4 and 9 are integrated. In the fourth step, the element 10 is completed by fixing the Z direction in FIG. 1 with urethane foam or the like so that the filter paper 3 and the support materials 4 and 9 are integrated. The urethane foam and the like in the third and fourth steps prevent air leakage at both ends of the filter paper 3, prevent air leakage between the element 10 and the housing 2, and fix the element 10 in the housing 2. It is formed. In the fifth step, silicon or hot melt may be applied to the gaps between the filter paper 3 and the support materials 4 and 9 so that the filter paper 3 is securely fixed by the support materials 4 and 9. The element 10 is installed in the housing 2 in the sixth step. As described above, the assembly of the air cleaner 1 is completed, and the air cleaner 1 is completed.
　なお、濾紙３を作成する際のプリーツ加工は実施してもしなくてもよいが、実施する場合は支持材４の筒周方向に濾紙３のひだが均等に配置されるようにすると好ましい。また、エアクリーナ１を組み付ける際のホットメルト等の塗布は実施してもしなくてもよいが、実施する場合は支持材４、９の空気穴５、８を塞がないようにホットメルト等を塗布することが望ましい。ホットメルトなどの接着部材は、空気穴５、８を塞ぐおそれがある。そこで、ホットメルトなどの接着部材を通気部６や接合部７の空気穴５、８が形成されていない領域１８に塗布することで、支持材４の全域における通気抵抗の増加を抑制することができる。 It should be noted that although pleating may or may not be carried out when the filter paper 3 is produced, it is preferable that the pleats of the filter paper 3 are evenly arranged in the circumferential direction of the support material 4 in the case of carrying out pleating. Further, when the air cleaner 1 is assembled, application of hot melt or the like may or may not be performed, but when it is applied, hot melt or the like is applied so as not to block the air holes 5 and 8 of the support members 4 and 9. It is desirable to do. An adhesive member such as hot melt may block the air holes 5 and 8. Therefore, an adhesive member such as hot melt is applied to the region 18 where the air holes 5 and 8 of the ventilation part 6 and the joint part 7 are not formed, so that the increase of the ventilation resistance in the entire area of the support material 4 can be suppressed. it can.
　エアクリーナ１の空気流入口１１より空気Ａが流入し、この流入した空気Ａは支持材９の空気穴、濾紙３、支持材４の空気穴５を経由して、支持材４より筒径方向内側の中心部１２に流出する。本開示では、支持材４のα方向及びＺ方向で多数のほぼ同じ空気穴が均等に形成されるので、中心部１２内の接合部７付近でのみ空気Ａが乱流化することなく、エアクリーナ１を吸気通路１３側からみたときの中心部１２内の空気Ａは整流される。この整流された空気Ａは空気流出口より吸気通路１３側へ流出する。 Air A flows in from the air inlet 11 of the air cleaner 1, and the inflowing air A passes through the air holes of the support member 9, the filter paper 3, and the air holes 5 of the support member 4, and is radially inward of the support member 4. Flows to the central part 12 of the. In the present disclosure, since many substantially the same air holes are uniformly formed in the α direction and the Z direction of the support member 4, the air A does not become turbulent only in the vicinity of the joint 7 in the central portion 12 and the air cleaner is formed. The air A in the central portion 12 when 1 is viewed from the intake passage 13 side is rectified. The rectified air A flows out from the air outlet to the intake passage 13 side.
　以上より、本開示のエアクリーナ１によれば、多数の空気穴５が形成されてなる単層の通気部６と、積層して接合された貫通孔８を有する接合部７を形成して、同一筒面積で比較したときに複層の接合部７の空気Ａの通過量を単層の通気部６に対して等しくした。それ故、支持材４を通過した後の空気Ａの流れを整流することができる。これにより、空気Ａの流れに関してエアクリーナ１の下流側に配置された流量センサ１４の検出値のばらつきを低減するには有利になり、流量センサ１４による流量の検出精度を向上させることができる。 As described above, according to the air cleaner 1 of the present disclosure, the single-layer ventilation part 6 in which a large number of air holes 5 are formed and the joint part 7 having the through hole 8 that is laminated and joined are formed, and the same. When the cylinder areas were compared, the amount of air A passing through the multi-layered joint 7 was made equal to that of the single-layer ventilation part 6. Therefore, the flow of the air A after passing through the support material 4 can be rectified. This is advantageous for reducing the variation in the detected value of the flow rate sensor 14 arranged on the downstream side of the air cleaner 1 with respect to the flow of the air A, and the flow rate detection accuracy of the flow rate sensor 14 can be improved.
　また、接合部７は、両端部のそれぞれに通気部６に形成された空気穴５と同一の空気穴８が同一の割合で形成されて、一端部に形成された複数の空気穴と、他端部に形成された複数の空気穴とが積層方向において一致して貫通孔８を形成してなる構成とすることで、複層の接合部７の空気Ａの通過量を単層の通気部６に対して確実に等しくすることができる。 Further, the joint portion 7 has a plurality of air holes 5 formed at one end, in which the same air holes 8 as the air holes 5 formed in the ventilation portion 6 are formed at the same ratio at both ends. The through holes 8 are formed so as to coincide with the plurality of air holes formed at the ends in the stacking direction, so that the amount of passage of the air A in the multi-layered joint portion 7 can be changed to a single-layer ventilation portion. It can be definitely equal to 6.
　また、接合部７の両端部のそれぞれに第一目印１６と第二目印１７とを形成することで、一端部に形成された複数の空気穴８と他端部に形成された複数の空気穴８とが積層方向において一致するように支持材４の両端部を積層することが容易になるので、支持材４の作成に係る作業効率を向上させることができる。 Further, by forming the first mark 16 and the second mark 17 at both ends of the joint portion 7, a plurality of air holes 8 formed at one end and a plurality of air holes formed at the other end. Since it becomes easy to stack both end portions of the support material 4 so that the support material 8 and the support material 8 coincide with each other in the stacking direction, it is possible to improve the work efficiency in producing the support material 4.
　第一目印１６及び第二目印１７を接合部７のＺ方向の同一方向端面に形成することで、パンチングメタルを丸めてＺ方向に見たときに目視可能になり、より目印としての機能性が増す。 By forming the first mark 16 and the second mark 17 on the end faces of the joint portion 7 in the Z direction in the same direction, when the punching metal is rolled up and viewed in the Z direction, it becomes visible, and the functionality as a mark is further improved. Increase.
　また、支持材４を構成する板材を丸めて筒状に形成すると共に、その板材の筒周方向の両端部を積層させるときにその両端部のうちの一端部に形成された複数の空気穴８と、他端部に形成された複数の空気穴８とが積層方向において一致させて、同一筒面積で比較したときに、その積層させた部位（接合部）７の空気Ａの通過量を単層の通気部６の空気Ａの通過量と等しくした状態で接合することで、本開示のエアクリーナ１の一部品である支持材４を比較的簡単に作成することができる。その結果、本開示のエアクリーナ１の製造効率を向上させることができる。 Further, the plate material forming the support member 4 is rolled into a tubular shape, and a plurality of air holes 8 are formed at one end of both ends of the plate material when laminating the both ends in the cylinder circumferential direction. And the plurality of air holes 8 formed at the other end are aligned in the stacking direction and compared in the same cylinder area, the amount of passage of the air A at the stacked portion (joint portion) 7 is determined. The support member 4 which is one component of the air cleaner 1 of the present disclosure can be relatively easily manufactured by joining the layers in the state where the amount of the air A passing through the ventilation portion 6 is equal. As a result, the manufacturing efficiency of the air cleaner 1 of the present disclosure can be improved.
　図３に例示するように、パンチングメタルの空気穴８の位置を重ね合わせて接合部７を形成する際に、溶接用治具２０を用いることが望ましい。溶接用治具２０は、空気穴８に挿通可能な複数の凸部２１が支持材４を構成するパンチングメタルにおける隣り合う空気穴８どうしの間の長さと同等に離間配置されて構成される。パンチングメタルの空気穴８の位置を接合部７の積層方向に重ね合わせるときに、溶接用治具２０の複数の凸部２１を複数の重ね合わせた空気穴８に挿入して位置合わせするようにすると、重ね合わせた空気穴８がずれることなく溶接することが可能となる。このように、溶接用治具２０を用いることで、空気穴８を重ね合わせた接合部７を容易に形成することできる。 As illustrated in FIG. 3, it is desirable to use a welding jig 20 when forming the joint 7 by superposing the positions of the air holes 8 of the punching metal. The welding jig 20 is configured such that a plurality of protrusions 21 that can be inserted into the air holes 8 are arranged at the same intervals as the lengths between the adjacent air holes 8 in the punching metal forming the support member 4. When the positions of the air holes 8 of the punching metal are overlapped with each other in the stacking direction of the joints 7, the plurality of convex portions 21 of the welding jig 20 are inserted into the plurality of overlapped air holes 8 and aligned. Then, it becomes possible to weld the superposed air holes 8 without shifting. Thus, by using the welding jig 20, it is possible to easily form the joint portion 7 in which the air holes 8 are overlapped.
　図４に例示するように、第２実施形態のエアクリーナ１は、第１実施形態のエアクリーナ１の支持材４をパンチングメタルではなくエキスパンドメタルで構成する点で異なり、その他の点では同じ構成である。 As illustrated in FIG. 4, the air cleaner 1 of the second embodiment is different in that the support member 4 of the air cleaner 1 of the first embodiment is made of expanded metal instead of punching metal, and has the same configuration in other points. ..
　エキスパンドメタルは、長手方向がα方向に、短手方向がＺ方向に向いてなる金属板材に空気穴５として千鳥状の切れ込みを押し広げて構成された菱形や亀甲形を成す多数の孔が形成されたメッシュ状のものである。 Expanded metal has a large number of holes in the shape of a rhombus or a carved shell formed by expanding staggered cuts as air holes 5 in a metal plate material whose longitudinal direction is in the α direction and short direction is in the Z direction. It has a mesh shape.
　エキスパンドメタルは、第１実施形態と同様に、通気部６及び接合部７に、多数の空気穴５、８と、少なくとも４つの空気穴５、８により周囲を囲繞された領域１８とが形成されている。つまり、エキスパンドメタルにおいては、メッシュを構成する金属部位（菱形や亀甲型を成す孔の周囲を囲繞する金属部位）が第１実施形態における領域１８と同等の領域となる。つまり、エキスパンドメタルは、スポット溶接により形成された点状の溶接点１９よりも大きい幅の金属部位に囲繞された菱形や亀甲形を成す多数の孔が形成されてメッシュ状のものである。 In the expanded metal, as in the first embodiment, a large number of air holes 5 and 8 and a region 18 surrounded by at least four air holes 5 and 8 are formed in the ventilation portion 6 and the joint portion 7. ing. That is, in the expanded metal, the metal portion that constitutes the mesh (the metal portion that surrounds the periphery of the hole that forms the diamond shape or the hexagonal shape) is the same as the area 18 in the first embodiment. That is, the expanded metal has a mesh-like shape in which a large number of holes having a diamond shape or a hexagonal shape surrounded by a metal portion having a width larger than the spot-shaped welding point 19 formed by spot welding are formed.
　この実施形態の支持材４の作成方法について説明する。まず、メッシュ製造機を用いて金属板材の幅方向上側と下側に千鳥配列で切り込みを入れる。そして、この切り込みを入れた板材を幅方向に引き延ばすことで多数の菱形や亀甲形を成す孔を有するメッシュ状のエキスパンドメタルを作成する。 A method of creating the support material 4 of this embodiment will be described. First, using a mesh manufacturing machine, cuts are made in a zigzag arrangement on the upper side and the lower side in the width direction of the metal plate material. Then, the plate material with the cuts is stretched in the width direction to prepare a mesh-shaped expanded metal having a large number of rhombic or hexagonal holes.
　図５に例示するように、次いで、第１実施形態と同様に作成したエキスパンドメタルを丸めてα方向の両端部の接合部７を積層してスポット溶接などにより接合して筒状に形成する。なお、図５では、簡略化のため、メッシュ状の孔の図示を省略している。 Next, as illustrated in FIG. 5, the expanded metal prepared in the same manner as in the first embodiment is rolled and the joining portions 7 at both ends in the α direction are laminated and joined by spot welding or the like to form a tubular shape. Note that in FIG. 5, for simplification, the illustration of the mesh-shaped holes is omitted.
　つまり、支持材４の作成時で金属板材であるエキスパンドメタルを丸めてそのα方向の両端部のうちの一端部と他端部が積層されたときに、一端部に形成された空気穴８と他端部に形成された空気穴８とが積層方向において一致するように、エキスパンドメタルを丸める。この丸めたエキスパンドメタルの積層された両端部をスポット溶接（図５の符号１９はスポット溶接箇所を示す）等により接合して筒状に形成することで、同一筒面積で比較したときに、その積層させた部位（接合部）７の空気Ａの通過量を単層の通気部６の空気Ａの通過量と等しくした支持材４の作成が完了する。 That is, when the support material 4 is formed, when the expanded metal, which is a metal plate material, is rolled and one end and the other end of both ends in the α direction are stacked, the air holes 8 formed at one end are The expanded metal is rolled so that the air holes 8 formed at the other end coincide with each other in the stacking direction. Both ends of the rolled expanded metal that are laminated are joined together by spot welding (reference numeral 19 in FIG. 5 indicates a spot welded portion) to form a tubular shape, and when compared in the same tubular area, Preparation of the support member 4 in which the amount of air A passing through the laminated portion (joint portion) 7 is made equal to the amount of air A passing through the single-layer ventilation portion 6 is completed.
　図６に例示するように、第３実施形態のエアクリーナ１は、支持材４の接合部７に単一の貫通孔８を形成する点で、第１実施形態のエアクリーナ１と異なり、その他の点では同じ構成である。この貫通孔８の面積は、通気部６に形成された空気穴５の面積よりも大きくする。貫通孔８の空気Ａの通過量は、同一筒面積で比較したときに、単層の通気部６の空気Ａの通過量と等しい。なお、貫通孔８の面積が空気穴５の面積よりも大きければよく、接合部７に複数の貫通孔８を形成して、接合部７と単層の通気部６との通過量を等しくしてもよい。 As illustrated in FIG. 6, the air cleaner 1 of the third embodiment is different from the air cleaner 1 of the first embodiment in that a single through hole 8 is formed in the joint portion 7 of the support member 4, and other points. Then it is the same composition. The area of this through hole 8 is made larger than the area of the air hole 5 formed in the ventilation part 6. The amount of air A passing through the through hole 8 is equal to the amount of air A passing through the single-layer ventilation portion 6 when compared in the same cylinder area. It is sufficient that the area of the through hole 8 is larger than the area of the air hole 5, and a plurality of through holes 8 are formed in the joint portion 7 so that the joint portion 7 and the single-layer ventilation portion 6 can pass through the same amount. May be.
　この実施形態の支持材４の作成方法について説明する。第３実施形態の支持材４の作成方法は、第１実施形態の支持材４の作成方法とは以下の点で異なる。すなわち、第３実施形態では、打ち抜き加工機の穴ピッチを調整して、板材の中央部にのみ空気穴５を多数穿って通気部６を形成し、この通気部６を形成したパンチングメタルを丸めて筒状に形成すると共に、そのパンチングメタルのα方向の両端部を積層させてスポット溶接等により接合して接合部７を形成した後、この接合部７に単一の貫通孔８を形成して、支持材４を作成する。この貫通孔８は、同一筒面積で比較したときに、接合部７の空気Ａの通過量を通気部６の空気Ａの通過量と等しくするように形成する。接合部の溶接点１９は貫通孔８が形成される箇所以外の接合部７の領域に形成する。 A method of creating the support material 4 of this embodiment will be described. The method of producing the support material 4 of the third embodiment differs from the method of producing the support material 4 of the first embodiment in the following points. That is, in the third embodiment, the hole pitch of the punching machine is adjusted, a large number of air holes 5 are formed only in the central portion of the plate material to form the ventilation portion 6, and the punching metal in which the ventilation portion 6 is formed is rounded. The punching metal is formed into a tubular shape, and both ends of the punching metal in the α direction are stacked and joined by spot welding or the like to form a joint 7, and then a single through hole 8 is formed in the joint 7. Then, the support material 4 is created. The through holes 8 are formed so that the amount of air A passing through the joint portion 7 is equal to the amount of air A passing through the ventilation portion 6 when compared in the same cylinder area. The welding point 19 of the joint is formed in the region of the joint 7 other than the place where the through hole 8 is formed.
　図７に例示するように、この実施形態の支持材４を構成するパンチングメタルは、隣り合う空気穴５、８Ａ、８Ｂ間が等ピッチｄで、かつ、空気穴５、８Ａ、８Ｂの直径Ｄがこのピッチｄよりも小さくなるものが好ましく、空気穴５、８Ａ、８Ｂの直径Ｄがこのピッチｄの半分以下となるものがより好ましい。例えば、このパンチングメタルは、隣り合う三つの空気穴５、８Ａ、８Ｂが辺の長さが等ピッチｄの正三角形状に配置されている。なお、隣り合う空気穴５、８Ａ、８Ｂどうしの間が等ピッチｄであればよく、空気穴５、８Ａ、８Ｂの配置は特に限定されない。例えば、隣り合う四つの空気穴５、８Ａ、８Ｂが辺の長さが等ピッチｄの正方形状に配置されてもよい。 As illustrated in FIG. 7, the punching metal forming the support member 4 of this embodiment has a uniform pitch d between the adjacent air holes 5, 8A, 8B and a diameter D of the air holes 5, 8A, 8B. Is preferably smaller than this pitch d, and more preferably the diameter D of the air holes 5, 8A, 8B is half or less of this pitch d. For example, in this punching metal, three adjacent air holes 5, 8A, 8B are arranged in an equilateral triangle shape whose sides have an equal pitch d. It is sufficient that the air holes 5, 8A, 8B adjacent to each other have an equal pitch d, and the arrangement of the air holes 5, 8A, 8B is not particularly limited. For example, four air holes 5, 8A, 8B adjacent to each other may be arranged in a square shape whose sides have equal pitches d.
　空気穴５、８Ａ、８Ｂの直径Ｄがピッチｄよりも小さいパンチングメタルは、筒周方向の両端部を積層して筒状にする際に、両端部が積層されて形成された接合部７において、一端部に形成された空気穴８Ａと他端部に形成された空気穴８Ｂとが積層方向に重なっていない状態である。つまり、一端部に形成された空気穴８Ａどうしの間に他端部に形成された空気穴８Ｂが配置される。換言すると、一端部の隣り合う四つの空気穴８Ａにより形成される菱形の領域の内部に、他端部の空気穴８Ｂが一つ配置される。 The punching metal in which the diameter D of the air holes 5, 8A, 8B is smaller than the pitch d is used in the joining portion 7 formed by laminating both end portions in the cylinder circumferential direction when laminating the both ends in the tubular shape. The air holes 8A formed at one end and the air holes 8B formed at the other end do not overlap in the stacking direction. That is, the air holes 8B formed at the other end are arranged between the air holes 8A formed at the one end. In other words, one air hole 8B at the other end is arranged inside the diamond-shaped region formed by the four adjacent air holes 8A at the one end.
　つまり、空気穴５の直径Ｄがピッチｄよりも小さいパンチングメタルにおいては、接合部７で一端部の空気穴８Ａと他端部の空気穴８Ｂとをずらして配置するだけで、空気穴８Ａ、８Ｂどうしを重ね合わせることなく支持材４を形成した後に、貫通孔８を形成する。このように、支持材４を形成してから、接合部７と通気部６との空気の通過量が等しくなるように接合部７に貫通孔８を形成することで、複数の空気穴８Ａ、８Ｂどうしを重ね合わせるという手間を省くことが可能になり、支持材４を製造する際の作業効率を向上させることができる。 That is, in the punching metal in which the diameter D of the air holes 5 is smaller than the pitch d, the air holes 8A at one end and the air holes 8B at the other end at the joining portion 7 may be arranged so as to be offset from each other. After forming the support material 4 without overlapping 8B, the through holes 8 are formed. In this way, after forming the support member 4, the through holes 8 are formed in the joint portion 7 so that the amount of air passing through the joint portion 7 and the ventilation portion 6 becomes equal to each other. It is possible to save the trouble of overlapping 8B with each other, and it is possible to improve the work efficiency when manufacturing the support material 4.
　既述した実施形態では、エレメント３の内側に配置される支持材４について説明したが、エレメント３の外側に配置される支持材９に貫通孔を有する接合部を形成してもよい。また、支持材４、９の両方に形成してもよい。 In the above-described embodiment, the support member 4 arranged inside the element 3 has been described, but the support member 9 arranged outside the element 3 may be provided with a joint having a through hole. Further, it may be formed on both the support members 4 and 9.
　また、支持材４としては、上記のように金属板材から構成されるパンチングメタルやエキスパンドメタルを用いる代わりに樹脂部材から構成されるものを用いてもよい。 Further, as the supporting material 4, instead of using the punching metal or the expanded metal composed of the metal plate material as described above, a material composed of a resin member may be used.
　本出願は、2019年2月14日付で出願された日本国特許出願（特願2019-024725）に基づくものであり、その内容はここに参照として取り込まれる。 This application is based on a Japanese patent application (Japanese Patent Application 2019-024725) filed on February 14, 2019, the content of which is incorporated herein by reference.
　本発明は、流量の検出精度を向上させることができるという効果を有し、エアクリーナ及びその製造方法等に有用である。 The present invention has an effect that the detection accuracy of the flow rate can be improved, and is useful for an air cleaner and its manufacturing method.
１　エアクリーナ
２　筐体
３　濾紙
４　支持材（インナーライナー）
５　空気穴
６　通気部
７　接合部
８　空気穴
９　支持材（アウターライナー）
１０　エレメント 1 Air cleaner 2 Housing 3 Filter paper 4 Support material (inner liner)
5 Air hole 6 Vent part 7 Joint part 8 Air hole 9 Support material (outer liner)
10 elements

Claims (6)

  1. 　筐体と、前記筐体の内部に設置された筒状の濾紙と、前記濾紙の筒径方向内側又は外側に設置されて前記濾紙を支持する筒状の支持材と、を備えて、前記支持材は、前記濾紙を通過した空気が筒径方向に通過する複数気穴が形成されてなるエアクリーナにおいて、
    　前記支持材は、単層の通気部と、前記支持材を構成する板材の筒周方向の両端部が積層した状態で接合されてなる接合部と、を有して、
    　前記通気部は、複数の前記空気穴が形成されてなり、
    　前記接合部は、前記両端部を貫通した貫通孔と、前記貫通孔の周囲を囲繞する接合枠とを有して、同一筒面積で比較したときに前記通気部に対して空気の通過量が等しくなることを特徴とするエアクリーナ。     The support includes a housing, a tubular filter paper installed inside the housing, and a tubular support member installed inside or outside of the filter paper in a tube radial direction to support the filter paper. The material is an air cleaner in which a plurality of pores through which the air passing through the filter paper passes in the cylinder radial direction are formed,
    The supporting member has a single-layer ventilation part, and a joint part formed by joining both ends of the plate material constituting the supporting member in the cylinder circumferential direction in a laminated state,
    The ventilation part is formed with a plurality of the air holes,
    The joint portion has a through hole penetrating the both ends, and a joint frame surrounding the periphery of the through hole, and the amount of air passing through the ventilation portion when compared in the same cylinder area. Air cleaner characterized by being equal.
  2. 　前記接合部は、前記両端部のそれぞれに前記通気部に形成された前記空気穴と同一の空気穴が同一の割合で形成されて、前記両端部のうち一端部に形成された複数の前記空気穴と、前記両端部のうち他端部に形成された複数の前記空気穴とが積層方向において一致して前記貫通孔を形成してなる請求項１に記載のエアクリーナ。 In the joint portion, the same air holes as the air holes formed in the ventilation portion are formed at the same ratio in each of the both end portions, and the plurality of air holes formed in one end portion of the both end portions. The air cleaner according to claim 1, wherein the hole and a plurality of the air holes formed at the other end of the both ends are aligned in the stacking direction to form the through hole.
  3. 　前記貫通孔の面積は、前記通気部に形成された前記空気穴の面積よりも大きい請求項１に記載のエアクリーナ。 The air cleaner according to claim 1, wherein an area of the through hole is larger than an area of the air hole formed in the ventilation portion.
  4. 　前記接合部は、
    　　　前記両端部のうち一端部の筒軸方向の端面に形成された第一目印と、
    　　　前記両端部のうち他端部の筒軸方向の端面に形成された第二目印とを有し、
    　前記両端部が積層した状態で、筒軸方向から見て前記第一目印と前記第二目印とが積層方向に一致したときに、前記貫通孔が形成される請求項１～３のいずれか１項に記載のエアクリーナ。     The joint is
    A first mark formed on the end face in the cylinder axis direction of one end of the both ends,
    A second mark formed on the end surface of the other end of the other end in the cylinder axis direction,
    The through hole is formed when the first mark and the second mark are aligned in the stacking direction when viewed from the cylinder axis direction in a state where the both ends are stacked. The air cleaner described in paragraph.
  5. 　筐体の内部に筒状に形成されてなる支持材を設置し、前記支持材の筒径方向内側又は外側に筒状に形成されてなる濾紙を設置したエアクリーナの製造方法において、
    　板材に前記濾紙を通過した空気が通過可能な空気穴を複数穿ち、
    　前記板材を丸めて筒状に形成すると共に、前記板材の筒周方向の両端部を積層させるときに前記両端部のうちの一端部に形成された複数の前記空気穴と、他端部に形成された複数の前記空気穴とが積層方向において一致させて貫通孔を形成し、同一筒面積で比較したときに、前記積層させた部位の空気の通過量を単層の通気部と等しくした状態で接合して、前記支持材を作成することを特徴とするエアクリーナの製造方法。     A method of manufacturing an air cleaner, wherein a support member formed in a tubular shape is installed inside a housing, and a filter paper formed in a tubular shape is installed inside or outside of the support material in a tube radial direction,
    Punch a plurality of air holes through which the air that has passed through the filter paper can pass,
    The plate material is rolled into a tubular shape, and the plurality of air holes formed at one end of the both ends when laminating the both ends in the cylinder circumferential direction of the plate material and the other end are formed. A plurality of the air holes are formed in the stacking direction so as to coincide with each other in the stacking direction, and when compared in the same cylindrical area, the amount of air passing through the stacked parts is made equal to that of the single-layer ventilation part. A method for manufacturing an air cleaner, characterized in that the support material is produced by bonding with the above.
  6. 　筐体の内部に筒状に形成されてなる支持材を設置し、前記支持材の筒径方向内側又は外側に筒状に形成されてなる濾紙を設置したエアクリーナの製造方法において、
    　板材の中央部に前記濾紙を通過した空気が通過可能な空気穴を複数穿って通気部を形成し、
    　前記板材を丸めて筒状に形成すると共に、前記板材の筒周方向の両端部を積層させて接合して接合部を形成し、
    　前記接合部に、同一筒面積で比較したときに、前記接合部の空気の通過量を前記通気部の空気の通過量と等しくする貫通孔を形成して、前記支持材を作成することを特徴とするエアクリーナの製造方法。     A method of manufacturing an air cleaner, wherein a support member formed in a tubular shape is installed inside a housing, and a filter paper formed in a tubular shape is installed inside or outside of the support material in a tube radial direction,
    Forming a ventilation part by punching a plurality of air holes through which the air passing through the filter paper can pass in the central part of the plate material,
    The plate material is rolled into a tubular shape, and both end portions of the plate material in the cylinder circumferential direction are stacked and joined to form a joint portion,
    The support member is formed by forming a through hole in the joint portion that makes the amount of air passing through the joint portion equal to the amount of air passing through the ventilation portion when compared in the same cylindrical area. Air cleaner manufacturing method.
PCT/JP2020/004523 2019-02-14 2020-02-06 Air cleaner and production method therefor WO2020166479A1 (en)

Applications Claiming Priority (2)

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JP2019-024725 2019-02-14
JP2019024725A JP2020133436A (en) 2019-02-14 2019-02-14 Air cleaner and its manufacturing method

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3041850U (en) * 1997-03-26 1997-10-03 日本化薬株式会社 Gas generator filter
JP2000354715A (en) * 1999-06-14 2000-12-26 Hiroshi Miyata Filter
JP2001132562A (en) * 1999-11-10 2001-05-15 Yamato Giken Kk Air cleaner for engine and method for making it
KR20080081228A (en) * 2008-07-28 2008-09-09 이범순 A cylinder type filter net
US20150059296A1 (en) * 2013-09-02 2015-03-05 Mann+Hummel Gmbh Filter Element and Filter System with a Filter Element

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3041850U (en) * 1997-03-26 1997-10-03 日本化薬株式会社 Gas generator filter
JP2000354715A (en) * 1999-06-14 2000-12-26 Hiroshi Miyata Filter
JP2001132562A (en) * 1999-11-10 2001-05-15 Yamato Giken Kk Air cleaner for engine and method for making it
KR20080081228A (en) * 2008-07-28 2008-09-09 이범순 A cylinder type filter net
US20150059296A1 (en) * 2013-09-02 2015-03-05 Mann+Hummel Gmbh Filter Element and Filter System with a Filter Element

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