WO2024260705A1 - Filterelement - Google Patents
Filterelement Download PDFInfo
- Publication number
- WO2024260705A1 WO2024260705A1 PCT/EP2024/065000 EP2024065000W WO2024260705A1 WO 2024260705 A1 WO2024260705 A1 WO 2024260705A1 EP 2024065000 W EP2024065000 W EP 2024065000W WO 2024260705 A1 WO2024260705 A1 WO 2024260705A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter element
- control body
- end cap
- element material
- element according
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
- B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/147—Bypass or safety valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/29—Filter cartridge constructions
- B01D2201/291—End caps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/30—Filter housing constructions
- B01D2201/301—Details of removable closures, lids, caps, filter heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/40—Special measures for connecting different parts of the filter
- B01D2201/4046—Means for avoiding false mounting of different parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/40—Special measures for connecting different parts of the filter
- B01D2201/4076—Anti-rotational means
Definitions
- the invention relates to a filter element with an element material that delimits an interior space and extends between two end parts, one end part of which has a spherical bearing and a fluid-conducting connection part that opens out in the direction of the interior space.
- DE 10 2018 009 187 A1 discloses a filter device with a filter housing and a filter element accommodated therein, the element material of which extends between two end caps as the two end parts, of which at least one end cap is mounted on an element holder, wherein the filter element is articulated on the element holder via its one end cap by means of a bearing that provides more than one degree of freedom.
- the known solution is designed as a so-called in-tank solution with an inflow opening for unfiltered material that is integrated in a filter head that fixes the filter device to a tank wall.
- the element is flowed through from the outside to the inside to remove particles from the fluid flow and the filtrate flow reaches the inside of the tank via a central opening on the bottom side from the shell parts belonging to the spherical bearing.
- the other end part has at least one control surface which, when not activated, holds the element material in an installation position relative to the connection part as a pivot bearing and which, when activated, brings the element material relative to the connection part into an operating or functional position by means of the spherical bearing, which is collision-free for the filter element, ensures that the filter element can be aligned into one of its functional positions almost automatically via the respective control surface on the filter element during installation.
- the filter element When the filter element is installed in a hollow cylindrical filter housing of a type not further specified, the filter element can inevitably assume a corresponding inclined position due to the known spherical bearing on its base part, which, unless it is corrected by hand in the direction of the vertical functional position, makes it impossible to screw on an associated housing cover or to make any other fluid-tight connection between a cover part and other tank or housing parts, because the filter element in its inclined installation position makes the connection process difficult or completely impossible.
- the filter element when the fluid-tight connection between the cover part and the rest of the housing or tank is established, the filter element is automatically aligned by means of the respective control surface in the direction of a vertical alignment axis for the operation of the device, so that the filter element always reaches its filtering functional position, without the filter element having to be aligned manually via its base-side bearing point, which is not easy to do and can regularly be forgotten.
- the filter element according to the invention makes its installation much easier and faster.
- the respective control surface is part of a control body which projects axially into the environment by a predeterminable projection over the element material and which has a predeterminable inclination, the angle of inclination of which is selected such that when the control body is actuated, the element material assumes its predetermined, collision-free position in a self-locking manner by means of the spherical bearing.
- control body has a control cone towards its free end face, at least one control surface of which encloses an acute angle of preferably less than 45°, particularly preferably of approximately 30°, with a longitudinal axis of the element material.
- the control body is an integral part of an end cap which has an element holder for the front-side reception of the element material and the control body, starting from its inclined control surface, transitions into a cylindrical shoulder in the direction of the adjacent top of the end cap.
- This makes it possible to produce the end cap together with the control body in a particularly cost-effective manner, for example using an injection molding process.
- the shoulder creates a type of free surface which enables parts of the cover to slide off the respective control surface without hindrance, provided that the cover is connected to other tank or housing parts, for example by screwing on.
- the control body is penetrated centrally by an opening for the flow of fluid, which can preferably be covered by a valve closing element of a bypass valve, which is accommodated inside the element material and is connected, preferably in a latching manner, to the adjacent end cap.
- a valve closing element of a bypass valve which is accommodated inside the element material and is connected, preferably in a latching manner, to the adjacent end cap.
- control body In terms of fluid guidance, it has proven to be advantageous for the control body to be radially penetrated by fluid passages that open out into the environment in the form of a fluid chamber on one side and in the direction of the valve closing element on the other opposite side.
- the respective control surfaces of the control body that limit the fluid passages can also contribute to a turbulence-free fluid flow through the filter element, especially when aligned in parallel.
- the control body is arranged coaxially to the longitudinal axis of the element material, protruding axially by a predeterminable length beyond the associated end cap, which is smaller, preferably half, particularly preferably a third smaller, than the diameter of the control body at its base-side transition point to its end cap.
- both at least the top of the end cap and the control body itself are designed as a rib construction with a large number of individual ribs, and that the inclined individual ribs of the control body form the respective control surface. Due to the rib construction, a rigid structure is achieved for the associated end cap, which in this respect offers a secure hold for the adjacent element material integrated into the end cap.
- connection part of one end part has a threaded section and a contact surface running transversely thereto, and that the further end cap of the element material has a further contact surface which, in the functional position, pivots by means of the spherical bearing and is partially supported on the one contact surface.
- the spherical bearing of the filter element has a fixable bearing shell on the connection part, relative to which a shell part of the end cap with the element material is guided so as to be movable, in particular pivotable.
- Figure 1 is an external view of the filter element as a tradeable and replaceable unit
- Figure 2 is a longitudinal sectional view of half of the filter element shown in Figure 1;
- Figures 3 and 4 show a filter element, in particular according to Figures 1 and 2, once in the deflected state and once in the reset state; and
- Figure 5 shows the base part of the filter element according to Figures 1 and 2.
- Figure 1 shows the complete filter element in an external view.
- the filter element has an element material 10 which is used in particular to filter out particle contamination from a fluid flow.
- the element material 10 can be pleated as usual, whereby the relevant filter folds are omitted in the figures for the sake of simplicity.
- the element material 10 extends between two end parts 12, 14 which are designed in the form of end caps 13, 15.
- Figure 1 shows the filter element as a whole with a vertical installation direction which corresponds to the usual desired operating or functional position of the filter element, which in turn corresponds to the filtration position.
- FIG. 1 further shows, when looking at Figure 1, the filter element is provided on its underside with an external thread 16, which is part of a fluid-conducting connection part 18 in the form of a hollow connection piece.
- the upper end part 12 has individual control surfaces 20, which are grouped in a concentric arrangement around the longitudinal axis 22 of the filter element.
- Figure 2 shows in a half longitudinal section through the filter element according to Figure 1 that the lower end part 14 has a spherical bearing 24 as a whole and the fluid-conducting connection part 18 in the form of the connection piece with the external thread 16.
- the hollow cylinder-like element material 10 comprises an interior 26 and is supported on a fluid-permeable support tube 28, whereby for the sake of simplicity the individual fluid passages, for example in the form of a perforation, are not shown.
- the support tube 28 is formed in particular from a strip material, preferably from sheet metal, which is Pipe is wound, wherein the individual web sections are connected to each other in a fluid-tight manner via a spiral-shaped flanged seam 30.
- the respective control surface 20 is part of a control body 32 which projects axially into the environment at the end by a predeterminable projection over the element material 10 and which has a predeterminable inclination, the angle of inclination x of which is selected such that when the respective control body 20 is actuated, the element material 10 self-lockingly assumes its predetermined collision-free operating or functional position by means of the spherical bearing 24, which can be seen in more detail in the illustrations according to Figures 3 and 4 and which will be explained in more detail below.
- the indicated angle of inclination x also corresponds to the inclination of the respective control surface 20 with respect to the longitudinal alignment of the element in the form of the longitudinal axis 22.
- the control body 32 has a corresponding control cone 34 towards its free end face, the respective control surface 20 of which encloses an acute angle of preferably less than 45°, particularly preferably of approximately 30°, with the longitudinal axis 22 of the element material 10.
- the control body 32 is an integral part of the upper end cap 15, which in this respect forms the upper end part 14.
- the end cap 15 in question has an element holder 36 for the frontal reception of the upper free end of the element material 10 and the connection between the element material 10 in this upper connection area and the element holder 36 is realized via a conventional adhesive bed 38, which is not shown for the sake of simplicity.
- the control body 32 with its individual, spaced-apart control surfaces 20 opens into an annular surface 40 on its free front side and, starting from its respective inclined control surface 20, merges into a cylindrical shoulder 42 to the adjacent upper side of the end cap 15, which is particularly evident from the representation according to Figure 4, whereby the corresponding paragraph 42 is not absolutely necessary for the function.
- the control body 32 is penetrated centrally by an opening 44 for the flow of fluid, which, as shown in Figure 2, is covered by a valve closing member 46 of a bypass valve 48 in its closed position.
- the plate-shaped valve closing member 46 of the bypass valve 48 is supported on a compression spring 50 which is integrated in a receiving housing 52 of the bypass valve 48.
- the element material 10 is flowed through from the outside to the inside in the direction of the interior 26 and if the element material 10 is clogged by particle contamination, which is technically referred to as blocking, the fluid flow is guided past the element material 10 on the outer circumference and reaches the inside of the control cone 34 of the control body 32.
- the valve closing member 46 is then moved downwards against the force of the compression spring 50, so that this central opening 44 is released and the fluid stream reaches the clean side of the element material 10, i.e. into the interior 26 of the filter element, via the central opening 44 and via web-like passages in the receiving housing 52.
- the receiving housing 52 is designed to be closed at its bottom 54 and the valve closing member 46 is guided telescopically via wall parts in adjacent hollow cylindrical wall parts of the receiving housing 52, which otherwise leaves individual passages free between webs for the flow of fluid.
- the housing 52 of the bypass valve 48 can be snapped into corresponding wall parts of the upper end part 14 via its upper edge in an elastically flexible manner for a durable fit, but can also be connected by adhesive.
- the bypass valve 48 into the interior 26 of the element material 10 at its upper free end.
- the control body 32 is penetrated radially by fluid passages 56, which on one side open outwards into the environment and on the other, opposite side exit in the direction of the valve closing member 46.
- the individual fluid passages 56 are delimited by web surfaces which extend vertically between the annular surface 40 and the shoulder 42 and in the direction of the adjacent upper side of the upper end part 14 in the form of the corresponding end cap 15, and on the outer circumference side, the individual control webs, which extend in a ring-like manner from the interior of the control body 32 outwards, open into the respective inclined control surface 20.
- the control body 32 is arranged coaxially to the longitudinal axis 22 of the element material 10 and projects axially by a predeterminable amount beyond the assignable end cap 15 in the form of the upper end part 14, wherein the respective projection is smaller, preferably by a third, than the diameter of the control body 32 at its base-side transition point to the upper end part 14 in the form of the upper end cap 15.
- At least the upper side of the respective end cap 15 in the form of the upper end part 14 as well as the control body 32 itself with its control cone 34 are designed as a rib construction with a plurality of individual ribs, wherein the inclined individual ribs of the control body 32 form the respective control surface 20.
- a rib construction of this kind is not absolutely necessary, but leads overall to a stiffening of the upper end part 14, so that erection forces can be safely absorbed when the filter element is automatically erected from its installation position according to Figure 3 into its vertical functional position according to Figure 4.
- a safe introduction of force into the element material 10 of the filter element is thus ensured.
- the inner support structure in the form of the support tube 28 also contributes, which is integrated into the upper end cap 15.
- the installation drawing according to Figure 5 now provides further details of the spherical bearing 28 as a whole, as follows.
- the lower end cap 13 in the form of the lower end part 12 is fitted with its outer tubular body 60 onto the inner tubular body 62 of the nozzle-shaped connecting part 18, the bearing 24 being clipped to the adjacent bearing surfaces 64, 66 due to elastic flexibility, in particular of the tubular body 62 standing freely on the contact surface 68.
- the convex bearing surface 64 resting on the concave bearing surface 66 the spherical bearing 24 is formed in the manner of a ball joint between the lower end cap 13 as part of the lower end part 12 and the connecting part 18 with its external thread 16.
- the end part 12 forming the lower end cap 13 in turn has a further element holder 70 for receiving the lower end of the element material 10, which is firmly connected to the lower end cap 13 via an adhesive bed 71 (not shown).
- the spherical bearing 24 with its two tubular bodies 60, 62 has a locking device 72, which provides protection against twisting when the filter element is screwed into an associated connection housing between the two tubular bodies 60, 62 and furthermore prevents the undesired exceeding of a predeterminable maximum deflection between the two tubular bodies 60, 62 with their spherical bearing surfaces 64, 66. Further details for such a locking device can be found, for example, in DE 10 2018 009 187 A1.
- a housing 74 is provided for the installation of the filter element as a whole, consisting of a hollow cylindrical housing shell 76, which has a cover part on the head side which has not yet been mounted, in particular not screwed on. 78 and on the base side a fluid guide part 80 is shown, which is screwed via a threaded section 82 onto the outside of the housing casing 76, at one of its lower free ends.
- the fluid guide part 80 has an inlet 84 for an unfiltrate flow and an outlet 86 for the filtered filtrate flow.
- the inlet 84 is connected in a fluid-conducting manner to an unfiltrate space 88 between the inside of the housing casing 76 and the outer peripheral side of the preferably pleated element material 10. After flowing through the element material 10 and the support tube 28 from the outside to the inside, the filtrate located on the side of the interior 26 is discharged as a whole via the outlet 86 of the filter device.
- the fluid guide part 80 has a filter element holder 90 with an internal thread 92 in the central region 87 of the outlet 86.
- the nozzle-like filter element holder 90 is arranged with its central axis 94 offset from the longitudinal axis 96 of the hollow cylindrical housing shell 76 by a predeterminable angle, so that effective installation protection as a counterfeit protection is created via the fluid guide part 80 of the housing 74 and conventional filter elements cannot be exchanged for the housing construction shown in Figure 3.
- the cover part 78 is screwed on along an external thread 98 at the upper end of the housing shell 76, the cover part 78 would collide with the upper element end 100 of the filter element, so that screwing on or otherwise connecting the cover part 78 to the housing 74 is not even possible.
- the component of the element end part 100 according to the invention is now the control body 32 already described with its control cone 34, formed from the individual segmented and inclined control surfaces 20 with the predeterminable angle of inclination x.
- the cover part 78 is now screwed onto the housing casing 76 at the head as indicated in Figure 3, guide parts 104 on the inner circumference of the cover part 78 slide onto the inclined control surfaces 20 and during the screwing movement this leads, thanks to the spherical bearing 24, to an erection movement of the filter element as a whole into its functional position, as shown in Figure 4.
- the upper element end of a conventional filter element was replaced by the control body 32 according to the invention.
- the longitudinal axis 96 of the housing shell 76 then runs in a coaxial direction to the central longitudinal axis 22 of the filter element as a whole; with the central axis 94 remaining inclined relative to the bottom-side filter element receptacle 90 in the fluid guide part 80.
- the mentioned guide parts 104 in the cover part 78 are preferably adapted to the course of the individual control surfaces 20, so that a vertical alignment in the operating or functional position according to the illustration in Figure 4 preferably results.
- the corresponding erection movement for the filter element from the installation position according to Figure 3 into the operating or functional position according to Figure 4 takes place via the mentioned control surfaces 20 of the control body 32 on the upper end cap 15 quasi automatically and continuously by progressively screwing on the cover part 78.
- the erection movement can preferably take place in such a way that the filter element according to the illustration in of Figure 4 is aligned vertically and that there is an equal radial distance between the outer circumference of the element material 10 and the inner circumference of the housing shell 76. Due to the self-locking, spherical bearing 24, this vertical functional position is also maintained during filter operation.
- Figure 5 shows the relevant installation situation according to Figure 4 in an enlarged view. If, as shown in Figure 5, the connection part 18 with its external thread 16 is screwed flush into the internal thread 92 of the filter element holder 90, the connection part 18 maintains an axial distance from an annular shoulder 106 on the filter element holder 90 at its free lower end. For the position shown, the filter element holder 90 has a raised shoulder 106 on the left side as viewed in the direction of Figure 5, which is smaller on the right side, so that the inclined position on the top side of the filter element holder 90 is inevitable.
- connection part 18 On the opposite top side, the connection part 18 has a transverse contact surface 108 as a closure, which is an integral part of the connection part 18 and is arranged approximately centrally between the external thread 16 and the tubular body 62 with its convex bearing surface 64.
- the contact surface 108 is widened in diameter compared to the external thread 16 and, when the connecting part 18 is fully screwed into the filter element holder 90, the contact surface 108 is supported with its lower free end on a front upper edge 110 of the nozzle-shaped filter element holder 90 as its upper side.
- Figure 5 also shows again in a clearer manner the different arrangements of the axis guides 94; 22, 96 between the components in the operating or functional position. Between the underside of the contact surface 108 and the adjacent external thread 16, There may also be a receiving space 112 for a ring seal (not shown), which separates the unfiltrate space from the filtrate space in the interior of the housing 74.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP24731489.1A EP4731321A1 (de) | 2023-06-22 | 2024-05-31 | Filterelement |
| AU2024311355A AU2024311355A1 (en) | 2023-06-22 | 2024-05-31 | Filter element |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023002529.1A DE102023002529A1 (de) | 2023-06-22 | 2023-06-22 | Filterelement |
| DE102023002529.1 | 2023-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024260705A1 true WO2024260705A1 (de) | 2024-12-26 |
Family
ID=91433262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/065000 Ceased WO2024260705A1 (de) | 2023-06-22 | 2024-05-31 | Filterelement |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4731321A1 (de) |
| AU (1) | AU2024311355A1 (de) |
| DE (1) | DE102023002529A1 (de) |
| WO (1) | WO2024260705A1 (de) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5332410A (en) * | 1992-03-25 | 1994-07-26 | Forschungszentrum Julich Gmbh | Shock resistant and temperature-strain resistant mounting for tubular particle filters |
| DE102018009187A1 (de) | 2018-11-23 | 2020-05-28 | Hydac Filtertechnik Gmbh | Filtervorrichtung |
| US20220331719A1 (en) * | 2019-09-09 | 2022-10-20 | Hydac Filtertechnik Gmbh | Filter device |
-
2023
- 2023-06-22 DE DE102023002529.1A patent/DE102023002529A1/de active Pending
-
2024
- 2024-05-31 EP EP24731489.1A patent/EP4731321A1/de active Pending
- 2024-05-31 WO PCT/EP2024/065000 patent/WO2024260705A1/de not_active Ceased
- 2024-05-31 AU AU2024311355A patent/AU2024311355A1/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5332410A (en) * | 1992-03-25 | 1994-07-26 | Forschungszentrum Julich Gmbh | Shock resistant and temperature-strain resistant mounting for tubular particle filters |
| DE102018009187A1 (de) | 2018-11-23 | 2020-05-28 | Hydac Filtertechnik Gmbh | Filtervorrichtung |
| US20220331719A1 (en) * | 2019-09-09 | 2022-10-20 | Hydac Filtertechnik Gmbh | Filter device |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2024311355A1 (en) | 2025-05-01 |
| EP4731321A1 (de) | 2026-04-29 |
| DE102023002529A1 (de) | 2024-12-24 |
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