EP4337852A1 - Élément filtrant pour un système de filtration comprenant une structure de résonateur et système de filtration comprenant une structure de résonateur - Google Patents

Élément filtrant pour un système de filtration comprenant une structure de résonateur et système de filtration comprenant une structure de résonateur

Info

Publication number
EP4337852A1
EP4337852A1 EP22727066.7A EP22727066A EP4337852A1 EP 4337852 A1 EP4337852 A1 EP 4337852A1 EP 22727066 A EP22727066 A EP 22727066A EP 4337852 A1 EP4337852 A1 EP 4337852A1
Authority
EP
European Patent Office
Prior art keywords
filter
resonator structure
housing
grooves
side resonator
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP22727066.7A
Other languages
German (de)
English (en)
Inventor
Daniel Schmid
Kevin Kohn
Sven Epli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mann and Hummel GmbH
Original Assignee
Mann and Hummel GmbH
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 Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Publication of EP4337852A1 publication Critical patent/EP4337852A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/4236—Reducing noise or vibration emissions
    • 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
    • F02M35/14—Combined air cleaners and silencers
    • 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
    • B01D46/0002—Casings; Housings; Frame constructions
    • B01D46/0005—Mounting of filtering elements within casings, housings or frames
    • 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
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2411—Filter cartridges
    • B01D46/2414—End caps including additional functions or special forms
    • 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
    • F02M35/0201—Housings; Casings; Frame constructions; Lids; Manufacturing or assembling thereof
    • 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
    • F02M35/02416—Fixing, mounting, supporting or arranging filter elements; Filter element cartridges
    • 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
    • F02M35/02475—Air cleaners using filters, e.g. moistened characterised by the shape of the filter element
    • F02M35/02483—Cylindrical, conical, oval, spherical or the like filter elements; wounded filter elements
    • 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
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
    • 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
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1283—Manufacturing or assembly; Connectors; Fixations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2265/02—Non-permanent measures for connecting different parts of the filter
    • B01D2265/028—Snap, latch or clip connecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2271/02—Gaskets, sealings
    • B01D2271/027—Radial sealings

Definitions

  • the invention relates to a filter element for a filter system with a resonator structure for noise dampening of a flowing fluid and a filter system with a resonator structure with such a filter element, in particular for an air duct system of an internal combustion engine, in particular a motor vehicle.
  • DE 101 10029 A1 discloses a ring filter insert for an intake air filter, in which a resonator chamber is integrated.
  • the resonator chamber is integrated in that one of the end plates of the filter element has the resonator chamber or is designed as such, the resonator chamber communicating with the interior of the filter element via an opening and being otherwise closed.
  • the resonator chamber is designed as a so-called Helmholtz resonator.
  • the resonator chamber is attached to the associated end plate as a separate component.
  • One object of the invention is to create a filter element for a filter system with a resonator structure for noise damping of a flowing fluid, which can be produced inexpensively.
  • a further object is the provision of a filter system with such a filter element with a resonator structure for noise damping of a flowing fluid, which can be manufactured inexpensively.
  • the aforementioned object is achieved by a filter element for a filter system, with a hollow-cylindrical filter bellows, the filter element having a substantially closed bottom on one end face, with at least one element-side resonator structure on the bottom 2
  • the element-side resonator structure on the outside of the base having at least two grooves separated from one another by a partition wall, at least one of the two element-side grooves being fluidically connected to the interior of the filter element via an opening, which element-side resonator structure when used as intended Installation in a filter housing of the filter system with a complementary housing-side resonator structure seals tightly, wherein the two element-side grooves are fluidly connected via arranged in the element-side and / or housing-side resonator structure connecting openings.
  • a filter system with a replaceable filter element and a filter housing
  • the filter element has a hollow-cylindrical filter bellows and a substantially closed base arranged on a front side, wherein at least one element-side resonator structure for noise damping of a flowing fluid is formed on the base
  • the element-side resonator structure has two grooves separated from one another by a partition, wherein at least one of the two grooves is connected to the interior of the filter element via an opening
  • the filter housing has at least one upper housing part and one lower housing part, with a to the element-side resonator structure complementary housing-side resonator structure is formed, which has two separated by a partition grooves, wherein the intended assembly of the filter system element-side resonator structure seals tightly with the housing-side resonator structure, the element-side and housing-side grooves of at least one of the two resonator structures being fluidically connected via connection openings in at least one of the partition walls
  • a filter element for a filter system with a hollow-cylindrical filter bellows, wherein the filter element at a 3
  • End face has a substantially closed bottom, wherein at least one element-side resonator structure for noise damping of a flowing fluid is formed on the bottom.
  • the element-side resonator structure has on the outside of the base at least two grooves separated from one another by a partition, at least one of the two element-side grooves being fluidically connected to the interior of the filter element via an opening.
  • the element-side resonator structure seals tightly with a complementary housing-side resonator structure, with the two element-side grooves being fluidically connected via connection openings arranged in the element-side and/or housing-side resonator structure.
  • the resonator structure for noise damping of a flowing fluid when flowing through the filter element of an air duct system or the filter housing of a filter system advantageously comprises two parts, an element-side resonator structure and a housing-side resonator structure.
  • a so-called shunt resonator can be produced in an advantageous manner, which has two volumes that are acoustically coupled via connection openings, for example slots, in a partition wall between the two volumes.
  • connection openings for example slots, can be present in the element-side resonator structure, the case-side resonator structure or in both resonator structures.
  • the hollow-cylindrical filter bellows has a closed peripheral wall that surrounds a longitudinal axis and can have any cross section.
  • the cross section of the filter bellows can be circular, rectangular, triangular, polygonal, oval or the like and can be conveniently adapted to an existing installation space.
  • the filter bladder may comprise pleated filter media or wrapped layers of filter media. A combination of folded and wound filter media is also possible.
  • the element-side resonator structure is formed as part of the essentially closed bottom of the filter element and can be, for example, two in the bottom 4 formed grooves separated by a partition.
  • the grooves can be designed, for example, as flat grooves with an almost rectangular cross section. As a result, only a little additional space is required in the longitudinal axis of the filter element.
  • the housing-side resonator structure is fluidically connected to the interior of the filter element via an opening.
  • the resonator structure on the housing side is formed on the inside of the lower housing part and can expediently be formed as a mirror image, complementary to the resonator structure on the element side.
  • the two resonator structures interact and form two flea chambers separated by partition walls, which enable a certain fluid exchange with one another via connecting openings in the partition walls for noise dampening.
  • the actual resonator is only formed when the filter system is assembled with the two matching resonator structures.
  • the two resonator structures can be sealed using a suitable sealing material, for example polyurethane (PUR), which is usually used to manufacture an end plate of such a filter element by foaming PUR foam onto the bottom of the filter element.
  • PUR polyurethane
  • sealing can be achieved easily and reliably, and no additional manufacturing steps are required.
  • separate attached or knotted-in seals can also be used.
  • Such a resonator can be implemented in a very limited space and can be manufactured inexpensively.
  • a central tube can have the base and be arranged with the base around a longitudinal axis in the interior of the filter bellows.
  • the element-side resonator structure can thus be formed as part of the center tube of the filter element and can, for example, comprise two grooves formed in the bottom of the center tube. 5
  • the element-side resonator structure can be integrated into an end disk on the front side.
  • the element-side resonator structure can be conveniently formed in the bottom of the filter element, which can be designed as the bottom of the central tube, for example, and can be integrated with the suitable seal for assembly with the housing-side resonator structure when the end plate is placed by foaming the bottom with PUR.
  • the end disk can have a sealing structure for sealing the element-side resonator structure from the housing-side resonator structure during intended installation in the filter housing.
  • the PUR foam used to cover the end disk can advantageously enable sealing for assembly with the resonator structure on the housing side.
  • a sealing structure laterally surrounding the element-side resonator structure can be produced in a simple manner. Even with an irregularly shaped resonator structure, an effective sealing of the two grooves from one another and from the environment can be achieved.
  • the sealing structure can thus expediently be formed flat on the end face of the end disk.
  • the sealing structure can be designed as a separate attached or knotted seal in the cover of the filter system.
  • the two element-side grooves can be designed as segments arranged adjacent to one another, for example circular ring segments.
  • one of the two grooves can at least partially encompass the other of the two grooves.
  • the two grooves can be accommodated in a space-saving manner on the bottom of the filter element and still provide sufficient volume for noise damping. This is favorable in the case of a hollow-cylindrical filter element.
  • the opening to the interior can be arranged in at least one of the two grooves. So can a cheap 6
  • Connection of the interior of the filter element are made to a sufficiently large volume for noise reduction.
  • the partition wall can have one or more connecting openings between the two grooves, in particular one or more axially extending slots in the partition wall.
  • a favorable acoustic coupling of the two volumes available for the resonator structure can be achieved by means of the connecting openings. The noise reduction can thus be effectively improved.
  • a filter system with an exchangeable filter element and a filter housing having a hollow-cylindrical filter bellows and an essentially closed bottom arranged on one end face.
  • At least one element-side resonator structure for noise damping of a flowing fluid is formed on the base, the element-side resonator structure having two grooves separated from one another by a partition wall, at least one of the two grooves being connected to the interior of the filter element via an opening.
  • the filter housing has at least one upper housing part and one lower housing part, with a housing-side resonator structure complementary to the element-side resonator structure being formed on an inside of the housing lower part, which has two grooves separated from one another by a partition.
  • the element-side resonator structure When the filter system is assembled as intended, the element-side resonator structure seals tightly with the housing-side resonator structure, with the element-side and housing-side grooves of at least one of the two resonator structures being fluidically connected via connection openings in at least one of the partitions.
  • the resonator structure for noise damping of a flowing fluid when flowing through the filter element or the filter housing of a filter system advantageously comprises two parts, an element-side resonator structure and a housing-side resonator structure.
  • a so-called shunt resonator can be shown in an advantageous manner, which has two volumes 7 are acoustically coupled via connecting openings, for example slots, in a partition wall between the two volumes.
  • the element-side resonator structure is formed as part of the bottom of the filter element and can, for example, comprise two grooves formed in the bottom, which are separated by a partition.
  • the grooves can be designed, for example, as flat grooves with an almost rectangular cross section. As a result, only a little additional space is required in the longitudinal axis of the filter element.
  • the housing-side resonator structure is fluidically connected to the interior of the filter element via an opening.
  • the resonator structure on the housing side is formed on the inside of the lower housing part and can expediently be formed as a mirror image, complementary to the resonator structure on the element side.
  • the two resonator structures interact and form two flea chambers separated by partition walls, which enable a certain fluid exchange with one another via connecting openings in the partition walls for noise dampening.
  • the actual resonator is only formed when the filter system is assembled with the two matching resonator structures.
  • the two resonator structures can be sealed using a suitable sealing material, for example polyurethane (PUR), which is usually used to manufacture an end plate of such a filter element by foaming it onto the bottom of the filter element.
  • PUR polyurethane
  • Such a resonator can be implemented in a very limited space and can be manufactured inexpensively.
  • connection openings as axially extending slots in the partition of the 8 element-side resonator structure and/or the housing-side resonator structure.
  • a favorable acoustic coupling of the two volumes available for the resonator structure can be achieved by means of the connecting openings. The noise reduction can thus be effectively improved.
  • the two housing-side grooves of the housing-side resonator structure can be designed as segments arranged adjacent to one another, in particular circular ring segments.
  • one of the two grooves can at least partially encompass the other of the two grooves.
  • one of the two grooves of the housing-side resonator structure can at least partially encompass the other of the two grooves.
  • the available installation space on the end plate can be used in a favorable manner.
  • the dividing wall between the two grooves can thus reach a favorable length in order to arrange connection openings for acoustic coupling between the two volumes.
  • the lower housing part can have an outlet of the housing-side resonator structure for cleaned air.
  • the outlet can be fluidically connected to at least one of the two grooves of the housing-side resonator structure.
  • an advantageous coupling to a compressor air connection for noise damping can take place via the output.
  • the cleaned air can be used, for example, in another system that requires cleaned air, for example in a braking system for commercial vehicles or the like.
  • the partition wall on the housing side can have one or more connecting openings between the grooves, in particular one or more slots running axially.
  • Resonator structure available volumes can be achieved.
  • the noise reduction can thus be effectively improved.
  • the two resonator structures can be sealed off from the interior of the filter system by a sealing structure arranged on at least one of the two resonator structures when assembled as intended.
  • the two resonator structures can be sealed using a suitable sealing material, for example polyurethane (PUR), which is usually used to manufacture an end plate of such a filter element by foaming it onto the bottom of the filter element.
  • PUR polyurethane
  • the sealing structure can be integrated into the end plate or be designed as a separate bonded or bonded seal.
  • Fig. 1 is an isometric view of a filter element according to one
  • FIG. 2 is an isometric view of a filter system according to one
  • FIG. 3 shows an isometric view of the filter system from FIG. 2 with a view of an inside of the lower housing part with a housing-side resonator structure
  • Figure 4 is a side view of the filter system of Figures 2 and 3;
  • Fig. 5 is a sectional view of the filter system in the area of the end plate of the
  • FIG. 6 shows an enlarged sectional illustration of the filter system in the area of the resonator structures.
  • Figure 1 shows an isometric view of a filter element 10 according to an exemplary embodiment in a plan view of an end plate 32 with an element-side resonator structure 20.
  • the filter element 10 has a hollow-cylindrical filter bellows 12 with a central tube 14 which is arranged around its longitudinal axis L in the interior of the filter bellows 12 and has an essentially closed bottom 18 on an end face 16 .
  • the cross-section of the filter bellows can have any suitable shape, such as circular, rectangular, triangular, polygonal, oval, or the like.
  • the center tube 30 is shown in Figure 1 11 cannot be seen since it is arranged on an inside of the filter bellows 12 .
  • An element-side resonator structure 20 for noise damping of a flowing fluid is formed on the base 18 of the central tube 30 , the element-side resonator structure 20 having two grooves 22 , 24 separated from one another by a partition 26 on the outside of the base 18 .
  • One of the two element-side grooves 22, 24 is fluidically connected via an opening 28 to the interior 30 of the filter element 10.
  • the opening 28 to the interior 30 is arranged in the radially inner one of the two grooves 22 , 24 .
  • the base 18 can also be provided as a separate component of the filter element 10 which closes the filter bellows 12 at the front and which base 18 is foamed in as an end disk 32 .
  • the bottom 18 is only directly visible in the grooves 22, 24, since the bottom 18 of the central tube 30 is usually integrated into the end disk 32 of the filter element 10, which is made, for example, with PUR foam. In this way, the element-side resonator structure 20 can be integrated directly into the front end disk 32 of the filter element 10 .
  • the contour of the two grooves 22, 24 is formed in the end disk 32 and is surrounded by the PUR foam applied over the surface as a sealing structure 34.
  • the end disk 32 thus has a sealing structure 34 for sealing the element-side resonator structure 20, 120 from the housing-side resonator structure during installation in the filter housing 110 as intended.
  • the grooves 22 , 24 are arranged in the end disk 32 in a radially circumferential manner surrounding support elements 36 for supporting the filter element 10 in the filter housing 110 , in particular in the lower housing part 114 .
  • the supporting elements 36 can expediently also be made of PUR foam.
  • the element-side resonator structure 20 is intended to seal tightly with a complementary housing-side resonator structure 120 (FIG. 3) when it is installed as intended in a filter housing 110 of the filter system 100 .
  • the two element-side grooves 22, 24 are in the 12 element-side and / or housing-side resonator structure 20, 120 arranged connection openings 128 fluidly connected.
  • the two element-side grooves 22, 24 are designed as concentrically arranged curved segments, for example circular ring segments. In particular, in this way one of the two grooves 22, 24 at least partially surrounds the other of the two grooves 22, 24 in the radial direction.
  • Figure 2 shows an isometric view of a filter system 100 according to an embodiment with a built-in filter element 10 with an element-side resonator structure 20 from Figure 1 with the lower housing part 114 removed
  • Figure 3 is an isometric view of the filter system 100 with a view of an inner side 116 of the lower housing part 114 with a to the complementary housing-side resonator structure 120 is shown.
  • the filter system 100 with the replaceable filter element 10 has a filter housing 110 which comprises a housing upper part 112 in which the filter element 10 is arranged and the housing lower part 114 .
  • the housing-side resonator structure 120 On the inner side 116 of the lower housing part 114, the housing-side resonator structure 120, which is a mirror image complementary to the element-side resonator structure 20, is formed, which has two grooves 122, 124 separated from one another by a partition 126.
  • the element-side resonator structure 20 seals tightly with the housing-side resonator structure 120 .
  • the two resonator structures 20, 120 are sealed via the sealing structure 34 arranged on one of the element-side resonator structure 20 and the surface of the housing-side resonator structure 120 designed as a sealing mating structure 134 when assembled as intended to the interior 30 of the filter system 100.
  • the two housing-side grooves 122, 124 of the housing-side resonator structure 120 are also designed as concentrically arranged curved segments, 13, for example, circular ring segments formed.
  • One of the two grooves 124 of the housing-side resonator structure 120 at least partially encompasses the other groove 122 in the radial direction.
  • the housing-side grooves 122, 124 of the housing-side resonator structure 120 have connecting openings 128 in the form of axially running slots in the partition wall 126, through which the joined grooves 22, 24, 122, 124 are fluidically connected.
  • the two volumes formed by the grooves 22, 122 and the grooves 24, 124 are acoustically coupled and can thus contribute to noise damping of the flowing fluid.
  • connection openings 28 can also be arranged in the partition 26 of the element-side resonator structure 20, likewise for example in slots or else shaped.
  • the lower housing part 114 has an outlet 130 of the housing-side resonator structure 120 for cleaned air, which in this example is fluidically connected to the radially inner one of the two grooves 122, 124 of the housing-side resonator structure 120.
  • a connection to a compressor air connection for noise damping can take place via the outlet 130 .
  • FIG. 4 shows a side view of the filter system 100 from FIGS. 2 and 3.
  • the upper housing part 112 and the lower housing part 114 are joined together and secured by means of connecting elements 118 distributed over the circumference.
  • the connecting elements 118 can be loosened and the filter element 10 can be removed.
  • the fluid inlet 102 is arranged on the side of the upper housing part 112 .
  • the fluid to be filtered flows through the filter bellows from an outside into the interior 30 and leaves the filter housing 110 filtered through the centrally arranged fluid outlet 104 . 14
  • FIG. 5 shows a sectional view of the filter system 100 in the area of the end disk 32 of the filter element 10
  • FIG. 6 shows an enlarged sectional view of the filter system 100 in the area of the resonator structures 20, 120.
  • the filter element 10 is arranged in the longitudinal axis L in the filter housing 110 and, when installed upright, sits on the inside 116 of the lower housing part 114 with the support elements 36 arranged on the end plate 32 .
  • the fluid to be filtered enters the filter housing 110 through the fluid inlet 102 and flows from the raw fluid area 50 from the outside inwards through the filter bellows 12 of the filter element 10 into the interior 30, which thus represents the clean fluid area 52. From this clean fluid area 52, the filtered fluid flows out of the filter housing 110 again through the fluid outlet 104.
  • the filter element 10 separates the raw fluid area 50 from the clean fluid area 52 in a fluid-tight manner due to the sealed installation.
  • the filter bellows 12 is supported by the center tube 14 against the pressure of the flowing fluid.
  • the two resonator structures 20, 120 lie opposite one another in the built-in filter element 10, so that the two grooves 22, 24 of the element-side resonator structure 20 form a volume with the respective corresponding groove 122, 124 of the housing-side resonator structure 120.
  • the two volumes are separated by the partition walls 26, 126, but are acoustically coupled by the connecting openings 128 arranged in the partition wall 126.
  • the resonator structures 20, 120 are sealed against one another and against the interior of the filter housing 110 by the sealing structure 34 formed in the end plate 32, which interacts with the corresponding sealing structure 134 formed as a sealing surface of the lower housing part 114, and can thus advantageously fulfill their noise damping function.
  • the sealing structure 34 formed from the PUR foam of the end plate 32 can be seen in particular in the detail enlargement in FIG. 15

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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)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Manufacturing & Machinery (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne un élément filtrant (10) conçu pour un système de filtration (100), comprenant un soufflet de filtre (12) cylindrique creux comprenant un fond (18) sensiblement fermé au niveau d'une face frontale (16), au moins une structure de résonateur (20) côté élément étant prévue pour amortir le bruit d'un fluide en écoulement, cette structure de résonateur (20) côté élément comportant, au niveau de la face externe du fond (18), au moins deux rainures (22, 24) séparées l'une de l'autre par une paroi de séparation (26), au moins une des deux rainures (22, 24) côté élément étant reliée fluidiquement à l'espace interne (30) de l'élément filtrant (10) par l'intermédiaire d'une ouverture (28) et fermant de manière étanche la structure de résonateur (20) côté élément, en cas de montage conforme dans un boîtier de filtre (110) du système de filtration, avec une structure de résonateur (120) côté boîtier complémentaire.
EP22727066.7A 2021-05-10 2022-05-02 Élément filtrant pour un système de filtration comprenant une structure de résonateur et système de filtration comprenant une structure de résonateur Pending EP4337852A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021112122.1A DE102021112122A1 (de) 2021-05-10 2021-05-10 Filterelement für ein Filtersystem mit einer Resonatorstruktur und Filtersystem mit einer Resonatorstruktur
PCT/EP2022/061697 WO2022238158A1 (fr) 2021-05-10 2022-05-02 Élément filtrant pour un système de filtration comprenant une structure de résonateur et système de filtration comprenant une structure de résonateur

Publications (1)

Publication Number Publication Date
EP4337852A1 true EP4337852A1 (fr) 2024-03-20

Family

ID=81877955

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22727066.7A Pending EP4337852A1 (fr) 2021-05-10 2022-05-02 Élément filtrant pour un système de filtration comprenant une structure de résonateur et système de filtration comprenant une structure de résonateur

Country Status (5)

Country Link
US (1) US20240075419A1 (fr)
EP (1) EP4337852A1 (fr)
CN (1) CN117769621A (fr)
DE (1) DE102021112122A1 (fr)
WO (1) WO2022238158A1 (fr)

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