WO2006076456A1 - Air filter arrangement - Google Patents
Air filter arrangement Download PDFInfo
- Publication number
- WO2006076456A1 WO2006076456A1 PCT/US2006/001021 US2006001021W WO2006076456A1 WO 2006076456 A1 WO2006076456 A1 WO 2006076456A1 US 2006001021 W US2006001021 W US 2006001021W WO 2006076456 A1 WO2006076456 A1 WO 2006076456A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air cleaner
- outlet
- arrangement
- housing
- media pack
- Prior art date
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
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
- B01D46/525—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material which comprises flutes
- B01D46/526—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material which comprises flutes in stacked arrangement
-
- 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
- B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2271/02—Gaskets, sealings
- B01D2271/022—Axial sealings
Definitions
- the present disclosure relates to air cleaners.
- the disclosure particularly relates to air cleaners with media packs that use z-filter media comprising a fluted (typically corrugated) media sheet secured to a facing sheet, formed into a media pack. More specifically, the disclosure relates to such media packs provided in serviceable filter cartridge arrangements, typically for use in air cleaners. Air cleaner arrangements, methods of assembly and use, and systems of use are also described.
- Air streams can carry contaminant material therein, hi many instances, it is desired to filter some or all of the contaminant material from the air stream.
- gas flow streams to engines for example combustion air
- gas streams to gas turbine systems and air streams to various combustion furnaces carry particulate contaminant therein that should be filtered. It is preferred for such systems, that selected contaminant material be removed from (or have its level reduced in) that gas.
- a variety of air filter arrangements have been developed for contaminant rejection. However, continued improvements are sought. Summary
- features useable in air cleaners and filter cartridges for the air cleaners provided.
- the features can be used together to provide a system, however some advantageous arrangements can be constructed to use only selected ones of the features.
- methods of construction and use are provided.
- a preferred media pack for use in or as air filter cartridges.
- the media pack comprises a stacked z-filter arrangement having opposite flow faces and opposite sides. At a pair of the opposite sides, ends of stacked strips are sealed, for example by end pieces such as molded-in-place end pieces, although alternatives are possible, hi some examples the molded end pieces would comprise molded polyurethane.
- a useable housing seal arrangement is provided.
- the housing seal arrangement can be provided as a molded-in-place seal arrangement.
- air cleaner arrangements which use the filter cartridge as a service component, are described, hi addition, shown and described are features of an air cleaner system and for example an environment of use. Also methods of assembly and use are shown and described.
- Fig. 1 is a schematic view of a system using an air cleaner assembly having a filter cartridge component according to the present disclosure.
- Fig. 2 is a schematic perspective view of an air cleaner assembly according to the present disclosure.
- Fig. 3 is a side elevational view of the air cleaner assembly depicted in Fig. 2.
- Fig. 4 is an inlet end view of the air cleaner assembly depicted in Figs. 2 and 3.
- Fig. 5 is a schematic view of the air cleaner assembly depicted in Figs. 2-4, with a housing portion shown in see-through to allow viewing of a positioning of an internally received filter cartridge component.
- Fig. 6 is a side elevational view of the arrangement depicted in Fig. 5.
- Fig. 7 is a cross-sectional view of the arrangement depicted in Fig. 6.
- Fig. 8 is a schematic cross-sectional view analogous to Fig. 7, showing a possible housing seal location.
- Fig. 9 is a schematic perspective view of a filter cartridge usable in the arrangement of Fig. 8.
- Fig. 10 is a side view of the arrangement shown in Fig. 9.
- Fig. 11 is an end view of the arrangement shown in Fig. 9.
- Fig. 12 is an opposite end view from Fig. 11.
- Fig. 13 is a view of an air flow face of the arrangement of Fig. 9.
- Fig. 14 is a side perspective view of a second air cleaner according to the present disclosure.
- Fig. 15 is an end perspective view of the air cleaner of Fig. 14.
- Fig. 16 is an inlet end elevational view of the air cleaner of Figs. 14 and 15.
- Fig. 17 is an outlet end elevational view of the air cleaner of Figs. 14 and 15.
- Fig. 18 is a side elevational view of the air cleaner of Figs. 14-17.
- Fig. 19 is a cross-sectional view taken along line 19-19, Fig. 17.
- Fig. 20 is a schematic perspective view of a filter cartridge useable in the air cleaner of Figs. 14-19.
- Fig. 21 is a side elevational view of the filter cartridge of Fig. 20.
- Fig. 22 is a first end elevational view of the cartridge of Fig. 20.
- Fig. 23 is a second, opposite, end view if the filter cartridge of Fig. 20.
- Air cleaners according to the present disclosure utilize a z-filter media construction.
- z-filter construction as used herein, and variants thereof, is meant to refer to a filter construction in which individual ones of corrugated, folded or otherwise formed filter flutes are used to define sets of longitudinal, typically parallel, inlet and outlet filter flutes for fluid flow through the media; the fluid flowing along the length of flutes between opposite inlet and outlet ends (or flow faces) on the media, during filtering.
- One type of z-filter media uses two specific separate media components which are joined together, to form a media construction.
- the two components are: (1) a fluted (typically corrugated) media sheet; and (2) a facing media sheet.
- the facing media sheet is typically non-corrugated, however it can be corrugated, for example perpendicularly to the flute direction as described in U.S. Provisional 60/543,804 filed February 11, 2004, incorporated herein by reference.
- the media pack comprises stacked strips (each strip, sometimes, called a single facer strip, being a section of fluted (corrugated) sheet secured to facing sheet) each strip extending generally (or approximately) in a plane parallel to the other strips. Such arrangements are described for example in U.S.
- An example is described, for example, in connection with Fig. 6 of U.S. Provisional 60/616,364, and related descriptions. Stacked arrangements according to the present disclosure can be made in general in accord with the descriptions therein.
- the flutes extend between opposite flow faces, one being an inlet flow face and the opposite being an outlet flow face. Opposite ends of the strips are typically sealed, for example by being secured within end pieces. This is described in U.S. Provisional Patent Application 60/616,364, at Fig. 64, for example.
- a housing seal is provided between the media pack and the air cleaner housing, as described below.
- Fig. 1 A. General System of Use.
- equipment 2 such as a vehicle 2a having an engine 3 with some defined rated air flow demand, for example in the range of 50 cfrn to 2000 cfm (cubic feet per minute) (i.e., 1.4-57 cubic meters/minute) is shown schematically.
- the equipment 2 may, for example, comprise a bus, an over-the-highway truck, an off-road vehicle, a tractor, a light-duty or medium-duty truck, or a marine vehicle such as a power boat.
- the engine 3 powers the equipment 2 upon fuel combustion, hi Fig. 1, air flow is shown drawn into the engine 3 at an air intake at region 5.
- An optional turbo 6 is shown in phantom, as optionally boosting the air intake to the engine 3.
- the turbo 6 is shown downstream from an air cleaner 10, although alternate arrangement are possible.
- the air cleaner 10 has a serviceable (i.e., removable and replaceable) filter cartridge 12 and is shown in the air inlet stream to the engine 3. hi general, in operation, air is drawn in at arrow 14 into the air cleaner 10 and through the filter cartridge 12. Upon passage through the air cleaner 10, selected particles and contaminants are removed from the air. The cleaned air then flows downstream at arrow 16 into the intake 5. From there, the air flow is directed into the engine 3.
- a serviceable filter cartridge 12 i.e., removable and replaceable filter cartridge 12 and is shown in the air inlet stream to the engine 3.
- the filter cartridge 12 is a serviceable component. That is, the cartridge 12 is removable and replaceable within the air cleaner 10. This allows the cartridge 12 to be serviced, by removal and replacement, with respect to remainder of air cleaner 10, when the cartridge 12 becomes sufficiently loaded with dust or other contaminant, to require servicing.
- B An Example Air Cleaner Arrangement, Figs. 2-13.
- air cleaner arrangement 50 comprises housing 50a including inlet section 51 and outlet section 52.
- the inlet section 51 and outlet section 52 are secured to one another along housing separation region 53.
- Clamps 54 or other arrangements, can be used to secure connection at separation region 53.
- housing separation region 53 comprises a flange 55 on the inlet section 51, and a flange 56 on the outlet section 52 sized and configured to engage one another.
- Unhooking clamps 54 allows separation of flanges 55, 56 (and thus sections 51, 52) to obtain service access to an interior of housing 50a.
- the inlet section 51 includes an air flow inlet 58 and a filter cartridge receiving section 59.
- the outlet section 52 includes a filter cartridge receiving section 69 and an outlet tube 70.
- inlet tube 58 and outlet tube 70 extend in generally opposite directions from one another. Alternate constructions are possible.
- a probe of a mass air flow sensor system could be positioned, to evaluate air flow in outlet tube 70.
- FIG. 3 a side elevational view of air cleaner arrangement 50 is shown.
- Fig. 4 an end view of air cleaner 50, directed toward inlet 58 is shown.
- Fig. 4 a portion of a filter cartridge 60 positioned inside of air cleaner housing 50a is shown.
- cartridge 60 comprises a z-filter media pack 61 having a inlet face 62, an outlet face 63, opposite ends 64, 65 and a pair of opposite faces 66, 61. Ends 64, 65 generally correspond to end sealant portions closing ends of single facer media forming the media pack 60.
- Opposite faces 66, 67 are shown substantially uncovered, however a sheet of material or protective covering could be provided at these locations.
- air is filtered by entering media pack 61 at inlet face 62 and exiting at opposite outlet face 63.
- Fig. 6 a side elevational view of the arrangement 50 as shown in Fig. 5, is depicted.
- Fig. 7 a cross-sectional view of the arrangement shown in Fig. 6 is depicted.
- the angle X between the outlet flow face 63 and outlet tube 70 is at least 10° typically at least 15° and often within the range of 15° to 80°, inclusive, for example 15° - 40°, inclusive.
- a variety of arrangements can be used to position the cartridge 60 as shown schematically in Fig. 2.
- housing seal arrangement 80 is shown on media pack 61 of cartridge 60.
- the seal arrangement 80 could be configured to be positioned between flanges 55, 56, for sealing.
- the seal arrangement 80 is positioned in a plane not parallel to inlet face 62 and outlet face 63, in extension across a face that would correspond to the face viewable at 66, Fig. 6.
- this face would comprise a first one of a sheet of facing or fluted (typically corrugated) material, and the opposite face, typically, a second one of sheet of facing or fluted (typically corrugated) material, although coverings or other materials can be provided.
- the angle between the seal arrangement 80 and the outlet face 63 is generally shown at Y, Fig.
- apex 90 of cartridge 61 is positioned at a highest location.
- Apex 90 comprises a corner or vertex formed between outlet flow face 63 and end 64.
- apex 91 is positioned in section 59, i.e., at a lowest location.
- Apex 91 comprises a corner diagonally opposite apex 90, and comprises a corner between inlet face 62 and end 65.
- cartridge 95 comprises media pack 96 with opposite flow faces 98, 99.
- the media pack 96 would typically and preferably comprise a blocked stacked arrangement of z-filter media strips, each strip comprising a section of corrugated sheet secured to a section of facing sheet. Ends of the strips form opposite end faces 101, 102.
- the end faces 101, 102 would typically be sealed, for example by covering with end pieces as shown.
- Housing seal arrangement 105 is viewable.
- the housing seal arrangement 105 includes sections 106, 107 extending across ends 101, 102, respectively. It also includes an extension 110 and opposite extension 111, not viewable in Fig. 9, for engagement with the housing.
- Fig. 10 the side view of cartridge 95 is depicted.
- the view of Fig. 10 would be toward side 112, Fig. 9, but inverted.
- a pair of spaced extensions or spacers 117, extending between ends 101, 102 is viewable.
- a second pair could also be positioned oppositely, i.e., on a surface 113, Fig. 11, opposite to surface 112.
- a view toward end section 107 is provided.
- the view is toward end section 106 (inverted relatively to Fig. 9).
- Fig. 13 the view toward outlet face 99 is shown.
- dimensions are shown in millimeters (and inches in brackets) to indicate an example size. Of course a variety of alternate sizes can be made.
- IV. A Second Example Air Cleaner Systems, Figs. 14-23.
- a second example air cleaner system is depicted.
- the air cleaner assembly 200 is viewable.
- a removable and replaceable filter cartridge 201 useable in the air cleaner 200 is provided.
- Many of the features of the air cleaner 200 are analogous features to those discussed previously for air cleaner 50, Figs. 2-8, and many of the features are provided with the same reference numerals in Figs. 14-19.
- the air cleaner arrangement 200 comprises housing 50a including an inlet section 51 and an outlet section 52. The inlet section 51 and outlet section 52 are secured to one another along housing separation region 53. Clamps 54 are used to secure separation region 53. Referring to Fig.
- the housing separation 53 comprises a flange 55 on the inlet section 51, and a flange 56 on the outlet section 52, sized and configured to engage one another.
- Unhooking clamps 54, Figs. 14-18, allow separation of flanges 55, 56 (and thus section 51 and 52) to obtain service access to an interior housing 50a. This allows for servicing of cartridge 201, for example by replacement, Fig. 19.
- the inlet section 51 includes an air flow inlet 58 and a filter cartridge receiving section 59.
- the outlet section 52 includes a filter cartridge receiving section 69 and an outlet tube 70.
- the inlet tube 58 and outlet tube 70 extend in generally opposite directions from one another. Alternate constructions are possible.
- a probe of a mass air flow sensor system could be positioned, to evaluate air flow in outlet tube 70.
- First housing section 51 includes a lower support ledge or shelf arrangement 210 comprising shelves 211 and 212.
- a lower support ledge or shelf arrangement 210 comprising shelves 211 and 212.
- opposite side panels 215, 216 will respectively rest on ledges 211, 212, for support.
- cartridge 201 is not suspended by the seal arrangement 220. Rather, the cartridge 201 is supported by engagement of the panels 215, 216 with the ledge arrangement 210.
- cartridge 201 comprises a media pack 230 having side panels 215 and 216.
- the media pack 230 would generally comprise a stacked arrangement of single facer material comprising fluted (corrugated) media secured to facing media with opposite upstream and downstream flute seal arrangements appropriate to define a series of inlet flutes and outlet flutes extending between opposite faces 235, 236 in accord with previous discussions. This prevents unfiltered air entering face 235 from leaving via face 236, without passage through media, for filtering.
- the particular media pack 230 depicted schematically in Fig. 20, is a "blocked" stacked arrangement, again meaning that no face or side is slanted, rather each engages adjacent ones at 90° angles. Of course, as discussed above slanted arrangements are possible with the principles described herein.
- face 235 would be an inlet face for air flow, and opposite face 236 would be an outlet face for filtered air.
- the panels 215, 216 would typically and preferably be molded-in-place, to seal ends of the single facer strips within the media pack 230.
- panels 215, 216 would be molded from a polyurethane such as a foamed polyurethane.
- filter cartridge 201 includes peripheral, perimeter housing seal arrangement 220 thereon.
- the particular seal arrangement 220 depicted extends completely around the media pack 230, separating the media pack into an upstream section 23Ou and a downstream 23Od.
- the seal arrangement 220 would comprise a single integral molded-in-place seal, typically a molded polymeric material such as a foamed polyurethane, made in a one-shot mold process and applied after the panels 215, 216 are in place on the media pack 230.
- the seal arrangement 220 is provided with an outer flange 240 which , when cartridge 201 is positioned within housing 50a, Fig. 19, is compressed between flanges 55, 56 to form a seal.
- Such a compression seal is generally referred to herein as a "axial" seal, or by similar terminology, since the force of compression on the seal member 220 is generally parallel to an access of air flow direction through the media pack 201.
- seal flange 240 generally extends at an angle Y relative to the outlet face 236 as previously discussed, i.e., typically at least 5° and usually within the range of 8° to 45°, inclusive, for example 8° - 20°, inclusive. For the particular example shown the range would typically be 8° - 15°, for example about 10°. More generally stated, the angle Y is greater than 0°, and usually not greater than 45°.
- each panel 215 includes opposite edges 215a, 215b, edge 215a being adjacent inlet face 235 and edge 215b being adjacent outlet face 236.
- Edges 215a and 215b are provided with proj ection regions 217 which extend beyond an adjacent face of the media pack. These regions 217 will engage the housing as shown in Fig. 19, for secure positioning of the cartridge, during installation, hi particular regions 217 along edge 215a, will engage ledge 211, Fig. 19. Regions 217 along edge 215b will engage cover ledge 250, Fig. 19, to help secure the cartridge against unintended motion.
- Ledge 215 is opposite ledge 211, and panel 215 is secured therebetween.
- panel 216 analogously includes opposite edges 216a and 216b, with projections 217.
- the projections 217 along edge 216a will be engaged by ledge 212 of Fig. 19, during installation.
- Projections 217 along edge 216b can be made to not engage structure within the housing, although if desired a ledge structure can be provided adjacent opposite corners, to help secure the cartridge 201 in position.
- seal arrangement 220 can be seen in cross-section.
- the seal arrangement 220 includes a base 260, by which the media pack 201 and panels 215, 216 are engaged.
- Flange 240 which is compressed to form the seal, is secured to base 260.
- the flange 240 is molded at end base 260, meaning the two are jointly molded from a single material, at the same time.
- a trough 261 is provided between the flange 240 and the media pack 201 and panels 215, 216.
- the trough 261 generally extends toward base 260 and is surrounded by at least a portion of the flange 240.
- the trough 260 is positioned to receive a flange projection 270 therein, during installation, Fig. 19.
- the flange projection 270 is secured on one of the housing sections 51, 52, in this example the downstream housing section 52.
- the trough 261 is generally configured to have a maximum depth of at least 3 mm, usually at least 4 mm and typically at least 5 mm. Examples would be 5-14 mm, although alternatives are possible.
- flange 55 is configured to receive therein seal arrangement 220 during installation.
- Flange 55 includes an outer projection 275 which will surround flange 240, during installation.
- Flange 275 is of a sufficient length to bottom out against a portion of cover section 52, during installation.
- cover section 52 includes flange arrangement 56 including inner projection 270 and outer projection 278.
- the inner projection 270 again, is sized to extend into trough 261.
- the outer projection 278 is sized to extend around projection 275, during installation.
- Flange 279 extending between projections 270, 278, provides a surface against which flange 275 can bottom out, during installation.
- radially outwardly projecting flange 279 includes projection 280 thereon, sized to press into axial seal flange 240, to help ensure seal.
- projection 280 will generally extend into the flange 240 a distance corresponding to at least 2% of the compressed thickness of the flange 240 between opposite walls 240a, 240b, Fig. 21.
- angle X indicates the angle between the outlet flow face 236 and the outlet tube 70.
- the angle is typically at least 10°, usually at least 15° and often within the range of 15° to 80°, inclusive, for example 15° - 45°.
- outlet face 236 can be viewed as tipped toward outlet tube 70, with an apex of the media pack indicated at 300 corresponding to a portion of the media pack 201 highest within housing 50a, and positioned to tip face 236 toward outlet tube 70.
- AA 217.1 mm
- AB 328.0 mm
- AC 301.5 mm
- AD 500.9 mm
- AE 328.4 mm
- AF 112.1 mm.
- polyurethane An example material useable for both the seal and the side moldings described herein is polyurethane.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtering Materials (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
Description
Claims
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/795,178 US8496723B2 (en) | 2005-01-13 | 2006-01-12 | Air filter arrangement |
CN2006800078391A CN101163535B (en) | 2005-01-13 | 2006-01-12 | Air filter device |
BRPI0606628-3A BRPI0606628A2 (en) | 2005-01-13 | 2006-01-12 | air filter arrangement |
JP2007551364A JP5053099B2 (en) | 2005-01-13 | 2006-01-12 | Air filter device |
EP06718132A EP1838414B1 (en) | 2005-01-13 | 2006-01-12 | Air filter arrangement |
AT06718132T ATE548102T1 (en) | 2005-01-13 | 2006-01-12 | AIR FILTER ARRANGEMENT |
US13/952,987 US8636820B2 (en) | 2005-01-13 | 2013-07-29 | Air filter arrangement |
US14/165,042 US9180399B2 (en) | 2005-01-13 | 2014-01-27 | Air filter arrangement |
US14/935,860 US10065145B2 (en) | 2005-01-13 | 2015-11-09 | Air filter arrangement; assembly; and, methods |
US16/119,121 US10864475B2 (en) | 2005-01-13 | 2018-08-31 | Air filter arrangement; assembly; and, methods |
US17/101,996 US11826689B2 (en) | 2005-01-13 | 2020-11-23 | Air filter arrangement; assembly; and, methods |
US18/488,129 US20240149203A1 (en) | 2005-01-13 | 2023-10-17 | Air Filter Arrangement; Assembly; and, Methods |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US64409405P | 2005-01-13 | 2005-01-13 | |
US60/644,094 | 2005-01-13 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/795,178 A-371-Of-International US8496723B2 (en) | 2005-01-13 | 2006-01-12 | Air filter arrangement |
US13/952,987 Continuation US8636820B2 (en) | 2005-01-13 | 2013-07-29 | Air filter arrangement |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006076456A1 true WO2006076456A1 (en) | 2006-07-20 |
WO2006076456A8 WO2006076456A8 (en) | 2007-12-13 |
Family
ID=36202533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2006/001021 WO2006076456A1 (en) | 2005-01-13 | 2006-01-12 | Air filter arrangement |
Country Status (7)
Country | Link |
---|---|
US (7) | US8496723B2 (en) |
EP (1) | EP1838414B1 (en) |
JP (1) | JP5053099B2 (en) |
CN (3) | CN102861486B (en) |
AT (1) | ATE548102T1 (en) |
BR (1) | BRPI0606628A2 (en) |
WO (1) | WO2006076456A1 (en) |
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WO2008095196A1 (en) | 2007-02-02 | 2008-08-07 | Donaldson Company, Inc. | Air filtration media pack, filter element, air filtration media, and methods |
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US7753982B2 (en) | 2006-02-17 | 2010-07-13 | Baldwin Filters, Inc. | Filter with drained jacket, seal indicator/lock means, and seal baffle |
US7909954B2 (en) | 2004-11-03 | 2011-03-22 | Baldwin Filters, Inc. | Method and apparatus for winding a filter media pack |
US7931725B2 (en) | 2004-11-02 | 2011-04-26 | Baldwin Filters, Inc. | Fluted filter apparatus |
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US7967886B2 (en) | 2004-06-08 | 2011-06-28 | Donaldson Company, Inc. | Z-filter media pack arrangement; and, methods |
US8048187B2 (en) | 2008-06-30 | 2011-11-01 | Baldwin Filters, Inc. | Filter frame attachment and fluted filter having same |
US8206625B2 (en) | 2004-11-02 | 2012-06-26 | Baldwin Filters, Inc. | Filter element |
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US9545593B2 (en) | 2007-11-01 | 2017-01-17 | Baldwin Filters, Inc. | Winding core pressure relief for fluted filter |
US9757676B2 (en) | 2006-12-06 | 2017-09-12 | Baldwin Filters, Inc. | Method and apparatus for winding a filter element |
US9795911B2 (en) | 2004-08-06 | 2017-10-24 | Donaldson Company, Inc. | Air filter arrangement; assembly; and, methods |
US9808752B2 (en) | 2008-02-04 | 2017-11-07 | Donaldson Company, Inc. | Method and apparatus for forming fluted filtration media |
US9890750B2 (en) | 2004-11-02 | 2018-02-13 | Baldwin Filters, Inc. | Filter element |
US10040020B2 (en) | 2006-12-06 | 2018-08-07 | Baldwin Filters, Inc. | Fluid filter apparatus having filter media wound about a winding frame |
US10058812B2 (en) | 2010-01-25 | 2018-08-28 | Donaldson Company, Inc. | Pleated filtration media having tapered flutes |
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US10363513B2 (en) | 2009-08-03 | 2019-07-30 | Donaldson Company, Inc. | Method and apparatus for forming fluted filtration media having tapered flutes |
US10512868B2 (en) | 2015-03-02 | 2019-12-24 | Donaldson Company, Inc. | Filter cartridges; air cleaner assemblies; housings; features; components; and, methods |
US10682597B2 (en) | 2016-04-14 | 2020-06-16 | Baldwin Filters, Inc. | Filter system |
US10835852B2 (en) | 2015-12-18 | 2020-11-17 | Donaldson Company, Inc. | Filter cartridges; air cleaner assemblies; housings; features components; and, methods |
US11198082B2 (en) | 2017-08-31 | 2021-12-14 | Donaldson Company, Inc. | Filter cartridges; air cleaner assemblies; housings; features; components; and methods |
US11426691B2 (en) | 2016-11-04 | 2022-08-30 | Donaldson Company, Inc. | Filter elements, air cleaner assemblies, and methods of use and assembly |
US11517840B2 (en) | 2017-11-27 | 2022-12-06 | Donaldson Company, Inc. | Air cleaner assemblies and methods of use |
US11772026B2 (en) | 2014-09-15 | 2023-10-03 | Donaldson Company, Inc. | Filter cartridges; air cleaner assemblies; housings; features; components; and, methods |
US12048888B2 (en) | 2008-07-25 | 2024-07-30 | Donaldson Company, Inc. | Pleated filtration media, media packs, filter elements, and methods for filtering fluids |
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ATE469692T1 (en) | 2003-03-18 | 2010-06-15 | Donaldson Co Inc | IMPROVED METHOD FOR WINDING Z-FILTER MEDIA |
WO2007056589A2 (en) | 2005-11-09 | 2007-05-18 | Donaldson Company, Inc. | Seal arrangement for filter element; filter element assembly: and, methods |
DE602005024687D1 (en) | 2004-06-14 | 2010-12-23 | Donaldson Co Inc | AIR FILTER ARRANGEMENT AND METHOD |
CN102861486B (en) | 2005-01-13 | 2015-09-16 | 唐纳森公司 | Air filter arrangement |
US7520913B2 (en) | 2005-02-04 | 2009-04-21 | Donaldson Company, Inc. | Non-cylindrical filter elements, and methods |
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Also Published As
Publication number | Publication date |
---|---|
JP5053099B2 (en) | 2012-10-17 |
US11826689B2 (en) | 2023-11-28 |
CN102861486B (en) | 2015-09-16 |
EP1838414B1 (en) | 2012-03-07 |
US20210077940A1 (en) | 2021-03-18 |
CN101163535B (en) | 2012-10-03 |
US20180369736A1 (en) | 2018-12-27 |
ATE548102T1 (en) | 2012-03-15 |
US20240149203A1 (en) | 2024-05-09 |
US8636820B2 (en) | 2014-01-28 |
CN101137424B (en) | 2011-12-28 |
US20160184757A1 (en) | 2016-06-30 |
JP2008526507A (en) | 2008-07-24 |
CN102861486A (en) | 2013-01-09 |
CN101163535A (en) | 2008-04-16 |
EP1838414A1 (en) | 2007-10-03 |
US9180399B2 (en) | 2015-11-10 |
US20140311108A1 (en) | 2014-10-23 |
US20080307759A1 (en) | 2008-12-18 |
US20130312379A1 (en) | 2013-11-28 |
US10864475B2 (en) | 2020-12-15 |
US8496723B2 (en) | 2013-07-30 |
US10065145B2 (en) | 2018-09-04 |
WO2006076456A8 (en) | 2007-12-13 |
BRPI0606628A2 (en) | 2009-07-07 |
CN101137424A (en) | 2008-03-05 |
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