WO2020166471A1 - Épurateur d'air et procédé de production associé - Google Patents

Épurateur d'air et procédé de production associé Download PDF

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Publication number
WO2020166471A1
WO2020166471A1 PCT/JP2020/004492 JP2020004492W WO2020166471A1 WO 2020166471 A1 WO2020166471 A1 WO 2020166471A1 JP 2020004492 W JP2020004492 W JP 2020004492W WO 2020166471 A1 WO2020166471 A1 WO 2020166471A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
filter paper
portions
air cleaner
inhibition
Prior art date
Application number
PCT/JP2020/004492
Other languages
English (en)
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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 WO2020166471A1 publication Critical patent/WO2020166471A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • 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 having a plurality of air holes through which air that has passed through the filter paper passes in the cylinder radial direction.
  • the ventilation part and the plurality of blocking parts are alternately arranged, and the blocking part has a smaller air passage amount to the ventilation part when compared in the same cylindrical area.
  • 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 member is provided with a large number of air holes through which the air passing through the filter paper can pass, and when a comparison is made in the same area, a large amount of air is passed through the ventilation part and air.
  • Forming an inhibition portion having a small passage amount forming the plate material into a tubular shape by rolling it, and arranging the ventilation portion and the inhibition portion alternately in the circumferential direction of the cylinder to create the support material. Characterize.
  • 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 large number of air holes through which the air passing through the filter paper can pass are formed in the plate material, and a part of the air holes that have been opened is closed to compare the same area.
  • the plate member is rolled into a tubular shape, and the ventilation portion and the inhibition portion are arranged in the cylinder circumferential direction. It is characterized in that the supports are formed by staggering them.
  • the ventilation portion and the inhibition portion having a large air passage amount are alternately arranged in the cylinder circumferential direction when compared with each other in the same area, and the air is periodically generated in the cylinder circumferential direction.
  • the portion that obstructs the flow 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 state in which the punching metal is formed into a tubular shape.
  • FIG. 4 is a diagram illustrating an expanded metal forming the support member according to the second embodiment of the present disclosure.
  • FIG. 5 is a figure which illustrates the structure which made the expanded metal of FIG. 4 cylindrical.
  • 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 provided with a large number of air holes 5 through which the air A that has passed through the filter paper 3 passes in the cylinder radial direction.
  • the support member 4 has a configuration in which a plurality of ventilation portions 6 (three in FIG. 1) and a plurality of inhibition portions 7 (three in FIG. 1) are alternately arranged in the ⁇ direction.
  • the ventilation part 6 is a part that is formed without blocking the large number of air holes 5 that were formed in the plate material that constitutes the support material 4.
  • the inhibition portion 7 is a part of the plate material forming the support material 4 where the air holes 5 are not formed, or a part or all of the large number of air holes 5 already formed in the plate material forming the support material 4. It is a part blocked with an adhesive member such as hot melt.
  • the passage amount of the air A in the inhibition portion 7 is smaller than that of the ventilation portion 6 when compared in the same cylinder area.
  • each of the inhibition portions 7 is arranged at equal intervals in the ⁇ direction. It is preferable to provide two or more inhibition portions 7 with respect to the support material 4, and it is more preferable to provide three or more inhibition portions 7 because the rectifying effect of the air A in the central portion 12 is dramatically improved. However, since the suction resistance of the support member 4 is increased by the inhibition portion 7, it is preferable that the total area of the ventilation portion 6 is larger than the total area of the inhibition portion 7, and it is more preferable that the total area of the inhibition portion 7 is at least twice as large. preferable.
  • one of the inhibition portions 7 is configured such that both end portions in the ⁇ direction of the plate material forming the support material 4 (the air holes 5 are not formed at these both end portions) are joined in a laminated state. .. That is, one of the inhibition portions 7 is the joint portion 8 of the plate materials forming the support material 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.
  • the joint portions 8 are arranged at both ends in the ⁇ direction, and the ventilation portions 6 and the inhibition portions 7 are alternately arranged at the center portion in the ⁇ direction.
  • 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 inhibition portion 7 is a portion where the air hole 5 is not formed.
  • the joining portion 8 is a portion where the air holes 5 are not formed, and is a portion that is laminated and joined by spot welding or the like when the punching metal is rolled into a tubular shape.
  • the lengths of the ventilation parts 6 in the ⁇ direction are equal, and the total value of the lengths of the ventilation parts 6 in the ⁇ direction is longer than the total value of the lengths of the inhibition parts 7 and the joints 8 in the ⁇ direction.
  • the length of each inhibition portion 7 in the ⁇ direction is equal to the length of the joint portion 8 in the ⁇ direction.
  • the inhibition portion 7 is formed on the support member 4 periodically in the circumferential direction of the joint portion 8 at every 60°, 90°, and 120°, for example.
  • the cycle is set based on the relationship between the increase in the fluid resistance and the increase in the air A rectification effect due to the increase in the number of the blocking portions 7 installed.
  • each inhibition portion 7 in the ⁇ direction is formed to be substantially equal to the width of the joint portion 8.
  • 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 making the filter paper 3 is a method of sequentially performing the following first to third steps.
  • the filter paper 3 is preheated, and 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 above-mentioned metal plate material is placed on the transport rail of the punching machine, and the metal plate material is transported to a processing section in which a punch for punching is installed above the transport rail.
  • a large number of holes are punched (punched) in the metal plate material that has reached the processed portion to form the air holes 5 and the punching metal is produced.
  • the hole pitch of the punching machine is adjusted to form a region in which the holes are punched and a region in which the holes are not punched.
  • the ventilation part 6 and the inhibition part 7 which are alternately arranged in the central part.
  • the supporting material 9 may be formed by the same method as the supporting material 4, but the inhibiting portion 7 does not have to be formed because it is not necessary to provide the inhibiting portion 7. 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.
  • the pleating process may or may not be performed when the filter paper 3 is formed, in the case of performing the pleating process, the filter paper 3 in the region of the support material 4 facing the ventilation portion 6 closely faces the inhibition portion 7. It is preferable to perform the pleating process so that the filter paper 3 in the region becomes sparse because most of the dust contained in the air A is removed before the ventilation part 6 having a relatively large ventilation amount.
  • 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 does not become turbulent only in the vicinity of the joint portion 8 in the central portion 12, and the air cleaner 1 is used for the intake passage.
  • the air A in the central portion 12 when viewed from the 13 side is rectified.
  • the rectified air A flows out from the air outlet to the intake passage 13 side.
  • the support member 4 has the ventilation portions 6 and the inhibition portions 7 that pass a large amount of the air A when compared in the same area and are arranged alternately in the cylinder circumferential direction.
  • the portion that periodically blocks the flow of the air A in the cylinder circumferential direction the flow of the air A that has passed through the support member 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 inhibiting portions 7 are arranged at equal intervals in the cylinder circumferential direction, the flow of the air A in the central portion 12 when the air cleaner 1 is viewed from the intake passage 13 side is in the cylinder circumferential direction of the support member 4. Since the flow is the same, the rectifying effect of the air A can be further increased.
  • one of the inhibition portions 7 is a joint portion 8 that is joined in a state where both end portions of the plate material constituting the support material 4 in the cylinder circumferential direction are laminated.
  • the air cleaner 1 uses the joint portion 8 that is inevitably formed when the support member 4 is formed, and the amount of passage of the air A is smaller than that of other portions, and the air that is equivalent to the joint portion 8 is used.
  • the inhibition portion 7 that becomes the passage amount of A is formed. Therefore, the joint portion 8 and the inhibition portion 7 function like a rectifying blade to suppress turbulence of the air A caused by the joint portion 8 and rectify the flow of the air A inside the air cleaner 1. Can be converted.
  • the support member 4 when the support member 4 is made of punching metal, it can be formed relatively easily by alternately forming a region where the air holes 5 are formed and a region where the air holes 5 are not formed.
  • the punching metal forming the support member 4 is preferably one in which the air holes 5 adjacent to each other have an equal pitch d, and the diameter D of the air holes 5 is smaller than the pitch d. It is more preferable that the diameter D of the air holes 5 is half or less of the pitch d.
  • this punching metal three air holes 5 adjacent to each other are arranged in an equilateral triangle shape with sides of equal pitch d.
  • the space between the air holes 5 adjacent to each other may be the same pitch d, and the arrangement of the air holes 5 is not particularly limited.
  • the four air holes 5 adjacent to each other may be arranged in a square shape whose sides have an equal pitch d.
  • the punching metal having the diameter D of the air holes 5 smaller than the pitch d has one end portion at the joint portion 8 formed by laminating both end portions in the cylinder circumferential direction when laminating both end portions in the cylinder circumferential direction.
  • the air holes 5A formed and the air holes 5B formed at the other end do not overlap in the stacking direction. That is, the air holes 5B formed at the other end are arranged between the air holes 5A formed at the one end. In other words, one air hole 5B at the other end is arranged inside the diamond-shaped region formed by the four adjacent air holes 5A at the one end.
  • the punching metal in which the diameter D of the air holes 5 is smaller than the pitch d it is easy to simply dispose the air holes 5A at one end and the air holes 5B at the other end at the joining portion 8 so that the obstruction portion is easily formed.
  • One of seven can be formed.
  • 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.
  • 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 that has been created is rolled, and both ends in the ⁇ direction are laminated and joined by spot welding or the like to form a tubular shape.
  • Reference numeral 16 in FIG. 5 indicates a spot welding point. Note that in FIG. 5, for simplification, the illustration of the mesh-shaped holes is omitted.
  • the expanded metal of the expanded metal is applied by the adhesive member 15.
  • the blocking portion 7 is formed by filling the hole. Specifically, a joint portion 8 in which both ends are laminated and joined by spot welding, and an adhesive member 15 is applied to the entire Z direction of the expanded metal with a gap in the ⁇ direction with the joint portion 8 as a base point.
  • the open air holes 5 are areas that are blocked by the adhesive member 15 such as hot melt and are not blocked by the inhibition portion 7 and the joint portion 8.
  • the ventilation portions 6 By forming the ventilation portions 6 alternately, it is possible to form relatively easily.
  • the filter paper 3 when the filter paper 3 is fixed to the support material 4, by forming the inhibition portion 7 and the joint portion 8 and the ventilation portion 6, the member can be fixed and the portion can be formed at one time. Can be simplified.
  • the mesh-shaped holes of the expanded metal may be filled with the adhesive member 15 to form the ventilation part 6, the inhibition part 7, and the joint part 8 in the expanded metal.
  • the punching metal in which the ventilation portion 6, the inhibition portion 7, and the joint portion 8 are formed is used as the support material 4, but as in the second embodiment, punching having a large number of perforations in the entire area of the metal plate material.
  • the holes present in the inhibition portion 7 and the joint portion 8 may be filled with the adhesive member 15 when the filter paper 3 is fixed.
  • the expanded metal in which the mesh-shaped holes are closed by the adhesive member 15 is used as the support material 4, but the amount of cuts in the zigzag array is adjusted at the time of manufacturing as in the first embodiment. Areas in which the notches are formed may be formed alternately with areas in which the notches are formed.
  • the blocking portion 7 and the joint portion 8 are formed by closing the mesh-shaped hole of the expanded metal with the adhesive member 15.
  • these portions have the same area as the ventilation portion 6 and the air A passes therethrough. It is only necessary to reduce the amount, and it is not necessary to close the mesh-shaped holes in the entire region of the inhibition portion 7 and the joint portion 8. For example, in consideration of an increase in ventilation resistance due to the lamination of the joint portions 8 and a decrease in the passing area due to spot welding, if the mesh-shaped holes present in the inhibition portion 7 are closed with the adhesive member 15 so as to be equivalent to that. Good.
  • the support member 4 arranged inside the filter paper 3 has been described, but the ventilation member 6 and the inhibition unit 7 may be formed in the support member 9 arranged outside the filter paper 3. 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 Ventilation part 7 Inhibition part 8 Joint part 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne un épurateur d'air (1) caractérisé en ce qu'il comprend un boîtier (2), un papier filtre cylindrique (3) qui est installé à l'intérieur du boîtier (2), et un élément support cylindrique (4) qui est installé sur l'intérieur ou l'extérieur du papier filtre (3) dans la direction radiale du cylindre et maintient le papier filtre (3) : l'élément support (4) comporte une pluralité de trous d'air (5) par lesquels de l'air (A) qui a traversé le papier filtre (3) est transporté dans la direction radiale du cylindre, et comporte une pluralité de sections de transport d'air (6) et une pluralité de sections de résistance (7) disposées de manière alternée dans la direction périphérique de cylindre ; et les sections de résistance (7) transportent moins d'air (A) que les sections de transport d'air (6) lorsqu'elles sont comparées à des zones de surface de cylindre égales.
PCT/JP2020/004492 2019-02-14 2020-02-06 Épurateur d'air et procédé de production associé WO2020166471A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019024724A JP2020133435A (ja) 2019-02-14 2019-02-14 エアクリーナ及びその製造方法
JP2019-024724 2019-02-14

Publications (1)

Publication Number Publication Date
WO2020166471A1 true WO2020166471A1 (fr) 2020-08-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114225568A (zh) * 2021-12-07 2022-03-25 和福忠 一种滤清器外网及其制备方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56145658U (fr) * 1980-03-18 1981-11-02
JPS57103357U (fr) * 1980-12-18 1982-06-25
JPS6475021A (en) * 1987-09-18 1989-03-20 Toyo Roki Seizo Kk Manufacture of air cleaner element
DE102011110756A1 (de) * 2011-08-16 2013-02-21 Hydac Filtertechnik Gmbh Filterelement
US20150059296A1 (en) * 2013-09-02 2015-03-05 Mann+Hummel Gmbh Filter Element and Filter System with a Filter Element
US20150375148A1 (en) * 2014-06-27 2015-12-31 Mann+Hummel Gmbh Filter Element of a Filter, Heating Cage for a Filter Element and a Method for Producing a Filter Element
JP2019007359A (ja) * 2017-06-21 2019-01-17 いすゞ自動車株式会社 エアクリーナおよびフィルタエレメント

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56145658U (fr) * 1980-03-18 1981-11-02
JPS57103357U (fr) * 1980-12-18 1982-06-25
JPS6475021A (en) * 1987-09-18 1989-03-20 Toyo Roki Seizo Kk Manufacture of air cleaner element
DE102011110756A1 (de) * 2011-08-16 2013-02-21 Hydac Filtertechnik Gmbh Filterelement
US20150059296A1 (en) * 2013-09-02 2015-03-05 Mann+Hummel Gmbh Filter Element and Filter System with a Filter Element
US20150375148A1 (en) * 2014-06-27 2015-12-31 Mann+Hummel Gmbh Filter Element of a Filter, Heating Cage for a Filter Element and a Method for Producing a Filter Element
JP2019007359A (ja) * 2017-06-21 2019-01-17 いすゞ自動車株式会社 エアクリーナおよびフィルタエレメント

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114225568A (zh) * 2021-12-07 2022-03-25 和福忠 一种滤清器外网及其制备方法

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