Source: http://www.google.com/patents/US8025802?dq=7,172,682
Timestamp: 2015-05-26 04:44:44
Document Index: 100608074

Matched Legal Cases: ['art 101', 'art 110', 'art 101', 'art 101', 'art 110', 'Application No. 1']

Patent US8025802 - Filter cartridge and apparatus for the filtration of liquids - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsThe invention describes an apparatus for the filtration of liquids and an associated filter cartridge 100, the correct seating of which is ensured and can be established by the user. The apparatus is characterized in that the inlet funnel 10 has at least one first fixing means 30 below the receiving...http://www.google.com/patents/US8025802?utm_source=gb-gplus-sharePatent US8025802 - Filter cartridge and apparatus for the filtration of liquidsAdvanced Patent SearchPublication numberUS8025802 B2Publication typeGrantApplication numberUS 11/597,189PCT numberPCT/EP2005/005161Publication dateSep 27, 2011Filing dateMay 12, 2005Priority dateMay 28, 2004Fee statusPaidAlso published asCA2567685A1, CA2567685C, CN1960947A, CN1960947B, DE102004026188A1, DE502005008145D1, EP1751061A1, EP1751061B1, EP1751061B9, EP2036861A1, US8114284, US20070246421, US20090294346, WO2005118482A1Publication number11597189, 597189, PCT/2005/5161, PCT/EP/2005/005161, PCT/EP/2005/05161, PCT/EP/5/005161, PCT/EP/5/05161, PCT/EP2005/005161, PCT/EP2005/05161, PCT/EP2005005161, PCT/EP200505161, PCT/EP5/005161, PCT/EP5/05161, PCT/EP5005161, PCT/EP505161, US 8025802 B2, US 8025802B2, US-B2-8025802, US8025802 B2, US8025802B2InventorsHilmar Walde, Stefan GR�SS, Gunder GuckesOriginal AssigneeBrita GmbhExport CitationBiBTeX, EndNote, RefManPatent Citations (32), Non-Patent Citations (10), Classifications (21), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetFilter cartridge and apparatus for the filtration of liquids
US 8025802 B2Abstract
The invention describes an apparatus for the filtration of liquids and an associated filter cartridge 100, the correct seating of which is ensured and can be established by the user. The apparatus is characterized in that the inlet funnel 10 has at least one first fixing means 30 below the receiving opening 13, and in that the filter cartridge 100 has at least one second fixing means 130 below and at a distance from the sealing rim 160, which second fixing means, when the filter cartridge 100 is being fitted into the receiving opening 13, interacts with the first fixing means 30. Images(21) Claims(43)
1. An apparatus for the filtration of liquids, having a filter cartridge (100), which includes a cartridge upper part (101) with at least one inlet opening (102), a cartridge lower part (110) with at least one outlet opening (113) and a sealing rim (160),
and having an inlet funnel (10) with a peripheral wall (11), with a funnel base wall (12), in which a receiving chamber (14) is arranged having at least one outflow opening (17), said chamber having a base wall (16) and a peripheral wall (15), and with a receiving opening (13), which is arranged in the funnel base wall (12) and into which the filter cartridge (100) can be fitted from above, the sealing rim (160) of the filter cartridge (100) bearing against the edge of the receiving opening (13), wherein the inlet funnel (10) has at least one first latching element (30) below the receiving opening (13), and
wherein the filter cartridge (100) has at least one second latching element (130) in a region of a bottom third of the filter cartridge, said latching elements (30, 130), when the filter cartridge (100) is being fitted in the axial direction, engaging each other so as to indicate to a user when the cartridge is in position and to define the sealing position of the filter cartridge (100) and the fixing forces are adjusted such that the filter cartridge (100) can be removed by being pulled out of the receiving opening (13) in the axial direction, wherein the latching elements comprise latching bosses (38), latching recesses (138) or annular beads (34, 135) and the latching elements axially fix the filter cartridge in the apparatus.
2. The apparatus according to claim 1, wherein the second latching element (130) is arranged in a region of the base wall (112) of the filter cartridge (100).
3. The apparatus according to claim 1, wherein the latching elements (30, 130) are projections or recesses.
4. The apparatus according to claim 3, wherein the projections or recesses are cylindrical, conical or frustoconical.
5. The apparatus according to claim 1, wherein the base wall (16) of the receiving chamber (14) has at least one first indentation (31), and a base wall (112) of the filter cartridge (100) has at least one second indentation (131), which engages over the first indentation (31).
6. The apparatus according to claim 1, wherein at least one throttling device (200, 200′) is arranged between the outlet opening (113) of the filter cartridge (100) and the outflow opening (17) of the receiving chamber (14).
7. The apparatus according to claim 6, wherein the throttling device (200, 200′) reduces the flow quantity delivered by the filter cartridge (100) by >0%-95%.
8. The apparatus according to claim 6, wherein the filter cartridge (100) is arranged in a region between the outlet opening (113) and the outflow opening (17), at a distance from the peripheral wall (15) and/or base wall (16) of the receiving chamber (14), with the result that a flow passage (201) is formed, and
wherein a minimum cross section of the flow passage (201, 202) forms the throttling device (200, 200′).
9. The apparatus according to claim 6, wherein, for a predetermined filter cartridge (100), the throttling device (200, 200′) can be set by selecting the receiving chamber (14) to have suitable dimensions or with a suitable cross section of the outflow opening (17).
10. The apparatus according to claim 1, wherein the outflow opening (17) forms a throttling device (200, 200′), a cross section of the outflow opening (17) being smaller than a cross section of the outlet opening (113) in the filter cartridge (100).
11. The apparatus according to claim 1, wherein the first latching element (30) is arranged on a holding element (20) arranged at an underside of the funnel base wall (12), the holding element (20) is the receiving chamber (14) and the outflow opening (17) in the receiving chamber (14) is arranged above the outlet opening (113) in the filter cartridge (100).
12. The apparatus according to claim 1, wherein the sealing rim (160) is a snap-action rim (161), which is connected to one of the two cartridge parts (101, 110) via an integral hinge (162), it being possible for the snap-action rim (161) to be flipped from a first, lower snap-action position into an upper, second snap-action position, and vice versa, and in that the funnel base wall (12) has a sealing seat (60), which surrounds the receiving opening (13) and into which the snap-action rim (161) snaps in its second position.
13. The apparatus according to claim 12, in which the cartridge upper part (101) has an outwardly facing first securing flange (120) and the cartridge lower part (110) has an outwardly facing second securing flange (121), via which the two cartridge parts (101, 110) are connected to one another, wherein the snap-action rim (161) is connected to one of the two securing flanges (120, 121) via the integral hinge (162).
14. The apparatus according to claim 12, wherein the sealing seat (60) merges into a conically projecting rim section (61) with an inwardly open abutment section (62), on which an outer edge (164) of the snap-action rim (161) engages is a groove.
15. The apparatus according to claim 14, wherein the abutment section (62) is a groove (63).
16. The apparatus according to claim 14, wherein the abutment section (62) is a step (64) with at least one inclined surface (65).
17. An apparatus for the filtration of liquids, having a filter cartridge (100), which includes a cartridge upper part (101) with at least one inlet opening (102), a cartridge lower part (110) with at least one outlet opening (113) and a sealing rim (160),
wherein the filter cartridge (100) has at least one second latching element (130) in a region of a bottom third of the filter cartridge, said latching elements (30, 130), when the filter cartridge (100) is being fitted in the axial direction, interacting and defining the sealing position of the filter cartridge (100) and wherein the fixing forces are adjusted such that the filter cartridge (100) can be removed by being pulled out of the receiving opening (13) in the axial direction,
wherein at least one throttling device (200, 200′) is arranged between the outlet opening (113) of the filter cartridge (100) and the outflow opening (17) of the receiving chamber (14) that reduces the flow quantity delivered by the filter cartridge (100) by >0%-95%, and at least one fixing means or the latching element (30, 130) forms the throttling device (200, 200′).
18. An apparatus for the filtration of liquids, having a filter cartridge (100), which includes a cartridge upper part (101) with at least one inlet opening (102), a cartridge lower part (110) with at least one outlet opening (113), and
a sealing rim (160), and having an inlet funnel (10) with a peripheral wall (11), with a funnel base wall (12), in which a receiving chamber (14) is arranged having at least one outflow opening (17), said chamber having a base wall (16) and a peripheral wall (15), and with a receiving opening (13), which is arranged in the funnel base wall (12) and into which the filter cartridge (100) can be fitted from above, the sealing rim (160) of the filter cartridge (100) bearing against the edge of the receiving opening (13), wherein the inlet funnel (10) has at least one first fixing means (30) below the receiving opening (13), which comprises at least a first indentation (31) in the base wall (16) of the receiving chamber (14), wherein the filter cartridge (100) has at least one second fixing means (130) below and at a distance from the sealing rim (160), which comprises at least a second indentation (131) in a base wall (112) of the filter cartridge (100) which engages over the first indentation (31), and
wherein the fixing means (30, 130), when the filter cartridge (100) is being fitted in the axial direction, interacts such that the sealing position of the filter cartridge (100) is defined,
wherein the first indentation (31) is a cylindrical or frustoconical hollow body (32), which is formed integrally on the base wall (16) of the receiving chamber (14), faces inwards and has at least one inwardly facing first bead (34), which is in the shape of an arc of a circle and leaves clear at least one outflow opening (17), arranged on its free edge (33), and wherein an outwardly facing mandrel (132), which engages in the cylindrical or frustoconical hollow body (32) when fitting the filter cartridge (100), is arranged in the second indentation (131),
wherein the receiving chamber (14) has the first indentation (31) in a region of the base and peripheral walls (15, 16) and the filter cartridge (100) has the second indentation (131) likewise in its peripheral and base walls (111, 112), and
wherein at least one throttling device (200, 200′) is arranged between the outlet opening (113) of the filter cartridge (100) and the outflow opening (17) of the receiving chamber, the throttling device (200, 200′) reduces the flow quantity delivered by the filter cartridge (100) by >0%-95%, the at least one fixing means (30, 130) forms the throttling device and the first and second indentations (31, 131), at least in subregions, are arranged at a distance from one another.
19. A filter cartridge which includes a cartridge upper part (101) with at least one inlet opening (102), a cartridge lower part (110) with at least one outlet opening (113) and a sealing rim (160), wherein at least one fixing means (130) is arranged below and at a distance from the sealing rim (160), with the cartridge lower part (110) being provided with at least one indentation (131, 136, 137), wherein the at least one indentation (131, 136, 137) is configured with the at least one fixing means (130) to axially fix the cartridge and removal of the filter cartridge when the filter cartridge is in an apparatus configured to engage the at least one indentation so as to indicate to a user when the cartridge is in position and to define the sealing position of the filter cartridge (100).
20. The filter cartridge according to claim 19, wherein the fixing means (130) is at least one of a spacer element, a guide element and a latching element.
21. The filter cartridge according to claim 20, wherein the latching element is a latching boss, a latching recess (138) or an annular bead (135).
22. The filter cartridge according to claim 19, wherein the fixing means (130) is a projection or a recess.
23. The filter cartridge according to claim 22, wherein the projection or recess is cylindrical, conical or frustoconical.
24. The filter cartridge according to claim 19, wherein the fixing means (130) is arranged in a region of a base wall (112) of the filter cartridge (100).
25. The filter cartridge according to claim 19, wherein an outwardly facing mandrel (132) is arranged in the indentation (131).
26. The filter cartridge according to claim 19, wherein the indentation (136, 137) is cuboidal in form.
27. The filter cartridge according to claim 19, wherein the sealing rim (160) is a snap-action rim (161) which is connected to one of the two cartridge parts (101, 110) via an integral hinge (162), it being possible for the snap-action rim (161) to be flipped from a first, lower snap-action position into an upper, second snap-action position, and vice versa.
28. The filter cartridge according to claim 27, in which the cartridge upper part (101) has an outwardly facing first securing flange (120), and the cartridge lower part (110) has an outwardly facing second securing flange (121), via which the two cartridge parts (101, 110) are connected to one another, wherein the snap-action rim (161) is connected to one of the two securing flanges (120, 121) via the integral hinge (162).
29. The filter cartridge according to claim 27, wherein the snap-action rim (161) is a flat edge strip which faces radially outwards.
30. The filter according to claim 19, wherein the fixing means (130) is arranged in a region of a lower half of the filter cartridge (100).
31. The filter cartridge according to claim 30, wherein the fixing means (130) is arranged in a region of a lower third of the filter cartridge (100).
32. The filter cartridge according to claim 19, wherein the fixing means (130) is a latching element.
33. An apparatus for the filtration of liquids, having a filter cartridge (100), which includes a cartridge upper part (101) with at least one inlet opening (102), a cartridge lower part (110) with at least one outlet opening (113), and
wherein the fixing means (30, 130), when the filter cartridge (100) is being fitted in the axial direction, engage each other such that the sealing position of the filter cartridge (100) is defined and wherein the fixing means axially fix the filter cartridge in the apparatus.
34. The apparatus according to claim 33, wherein the first fixing means and the second fixing means (30, 130) are each independently selected to be spacer elements or guide elements.
35. The apparatus according to claim 33, wherein the fixing means (30, 130) are projections or recesses.
36. The apparatus according to claim 35, the projections or recesses are cylindrical, conical or frustoconical.
37. The apparatus according to claim 33, wherein the fixing means are latching elements and comprise latching bosses (38), latching recesses (138) or annular beads (34, 135).
38. The apparatus according to claim 33, wherein the first indentation (31) is a cylindrical or frustoconical hollow body (32), which is formed integrally on the base wall (16) of the receiving chamber (14), faces inwards and has at least one inwardly facing first bead (34), which is in the shape of an arc of a circle and leaves clear at least one outflow opening (17), arranged on its free edge (33), and wherein an outwardly facing mandrel (132), which engages in the cylindrical or frustoconical hollow body (32) when fitting the filter cartridge (100), is arranged in the second indentation (131).
39. The apparatus according to claim 38, wherein the mandrel (132), on its outer side, has at least one second bead (135) in the shape of an arc of a circle, which engages behind the first bead (34) during fitting of the filter cartridge (100).
40. The apparatus according to claim 37, wherein the hollow body (32) and the mandrel (132) are each arranged centrally.
41. The apparatus according to claim 38, wherein the receiving chamber (14) has the first indentation (31) in a region of the base and peripheral walls (15, 16) and
the filter cartridge (100) has the second indentation (131) likewise in its peripheral and base walls (111, 112).
42. The apparatus according to claim 41, wherein the first and second indentations (31, 131) are cuboidal in form.
43. The apparatus according to claim 41, wherein the first indentation (31) has first latching means on two of its side walls (40, 41), and the second indentation (131) has second latching means on two of its side walls (140, 141). Description
U.S. Pat. No. 4,020,350 describes a filter system which is connected to a water pipe via two connections. The filter system comprises a housing upper part and a housing lower part, which are screwed together after the filter cartridge has been fitted. The cover and base wall of the filter cartridge have cup-shaped indentations, in which correspondingly shaped connection pieces of the housing parts for supplying the unfiltered liquid and removing the filtered liquid, engage. To change the filter cartridge, the two housing parts have to be unscrewed.
This object is achieved by an apparatus in which the inlet funnel has at least one first fixing means below the receiving opening, and the filter cartridge has at least one second fixing means below and at a distance from the sealing rim; when the filter cartridge is being fitted into the receiving opening, the at least one second fixing means interacts with the first fixing means.
The fixing means are arranged in such a manner that during interaction they define the sealing position of the filter cartridge, i.e. when the fixing means interact, the sealing rim of the filter cartridge in its intended position bears against the edge of the receiving opening.
Since the fixing means define the sealing position of the filter cartridge, it is advantageous if the distance between sealing rim and fixing means is selected to be as great as possible. This prevents the filter cartridge from tilting or being incorrectly positioned.
It is preferable for the first fixing means to be arranged on a holding element arranged at the underside of the funnel base wall. A holding element of this type may be designed in various ways. A holding element in the form of a holding bracket which spans the receiving opening below the latter is preferred.
The fixing means allow accurate positioning of the filter cartridge, so that not only is the optimum position of the sealing rim at the receiving opening ensured, but also a defined distance can be set between the filter cartridge and the wall of the receiving chamber. The cross section of the flow passage between outlet opening of the filter cartridge and outflow opening of the receiving chamber can thus likewise be set in a targeted way.
A preferred embodiment provides for the cross section of the outflow opening/outflow openings defined by the bead or beads on the cylindrical or frustoconical hollow body to be selected in such a way that this/these outflow opening(s) has/have a throttling action.
For this purpose, provision is made for the sealing rim to be a snap-action rim which is connected to one of the two cartridge parts via an integral hinge, it being possible for the snap-action rim to be flipped from a first, lower snap-action position into an upper, second snap-action position and vice versa, and for the funnel base wall to have a sealing seat, which surrounds the receiving opening and into which the snap-action rim snaps in its second position.
In this embodiment, fixing means in the form of guide elements are sufficient. Here, fixing means in the form of latching elements could be disadvantageous since in the event of what is known as double latching at the sealing rim and, for example, in the region of the base, the tolerances which have to be observed make production costs correspondingly high.
The filter cartridge, which can be fitted into the inlet funnel and has a cartridge upper part with at least one inlet opening, a cartridge lower part with at least one outlet opening and a sealing rim, is characterized by least one fixing means arranged below and at a distance from the sealing rim.
FIGS. 1 a, b show vertical sections through an inlet funnel with fitted filter cartridge in accordance with two embodiments,
FIG. 8 shows a vertical section through the frustoconical hollow body on line H-H in FIG. 7 b , FIG. 9 shows an enlarged sectional illustration of the lower region of the two indentations in accordance with a further embodiment, on line G-G through the frustoconical hollow body in FIG. 7 a , FIG. 10 shows a vertical section through a filter cartridge,
FIG. 1 a illustrates a vertical section through an inlet funnel 10 with fitted filter cartridge 100. The inlet funnel 10 has a peripheral wall 11, which merges into a funnel base wall 12 which has a receiving opening 13. A receiving chamber 14, which once again has a peripheral wall 15 and a base wall 16, extends downwards from the receiving opening 13 as holding element 20.
The filter cartridge 100 is fitted into this receiving chamber 14 axially from above; the filter cartridge 100 comprises a cartridge upper part 101 and a cartridge lower part 110. The cartridge upper part 101 is configured in the shape of a roof and has inlet openings 102. A sealing rim 160, which bears against the sealing seat 60 of the inlet funnel 10 in the region of the receiving opening 13, is provided in the connection region of cartridge upper part 101 and cartridge lower part 110.
FIG. 1 b illustrates a further embodiment of the apparatus, which differs from the apparatus shown in FIG. 1 a by virtue of the fact that two first fixing means 30, in the form of indentations 31 designed as spacer elements, are formed integrally on the inner side of the base wall 16. The base wall 112 of the filter cartridge 100 bears against these two spacer elements 30.
FIG. 2 illustrates a further embodiment of an inlet funnel 10, which does not have a receiving chamber 14, but rather instead, as holding element 20, has a holding bracket 21 which comprises the two substantially vertical limbs 22 a, b and a cross-bar 23. This holding bracket 21 spans the receiving opening 13 below the receiving opening 13, so that a filter cartridge (not shown) can be fitted. The dimensions of the holding bracket 21 are matched to the dimensions of the filter cartridge 100 to be fitted.
In the central region, the cross-bar 23 has a first fixing element 30 in the form of a first indentation 31. This indentation 31 is conical in form and extends vertically upwards. The associated filter cartridge 100 (not shown), in the region of its base wall, has a corresponding conical or frustoconical indentation (second indentation 130), so that the two fixing elements interact during fitting of the filter cartridge 100 in the axial direction, in such a way as to guide the filter cartridge. In this configuration, the fixing elements 30, 130 serve as spacer elements and guide elements.
Cartridge upper part
Cartridge lower part
Securing flange on upper part
Securing flange on lower part
Second fixing means
Second indentation
Latching recess
Snap-action rim
Encircling groove
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No. 12/534,123, filed Dec. 2009, Hilmar Walde.Classifications U.S. Classification210/232, 210/237, 210/236, 210/451, 210/484, 210/238, 210/455, 210/282, 210/244, 210/477International ClassificationB01D35/30, B01D24/00, B01D29/00, B01D27/02, C02F1/00, B01D27/00, B01D29/11Cooperative ClassificationC02F2201/002, C02F2307/04, C02F1/003European ClassificationC02F1/00D4Legal EventsDateCodeEventDescriptionMar 11, 2015FPAYFee paymentYear of fee payment: 4Jul 13, 2007ASAssignmentOwner name: BRITA GMBH, GERMANYFree format text: CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE S ADDRESS PREVIOUSLY RECORDED ON REEL 018928 FRAME 0124;ASSIGNORS:WALDE, HILMAR;GROSS, STEFAN;GUCKES, GUNDER;REEL/FRAME:019557/0190;SIGNING DATES FROM 20070111 TO 20070202Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE S ADDRESS PREVIOUSLY RECORDED ON REEL 018928 FRAME 0124. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT;ASSIGNORS:WALDE, HILMAR;GROSS, STEFAN;GUCKES, GUNDER;SIGNING DATES FROM 20070111 TO 20070202;REEL/FRAME:019557/0190Owner name: BRITA GMBH, GERMANYFree format text: CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE S ADDRESS PREVIOUSLY RECORDED ON REEL 018928 FRAME 0124. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT;ASSIGNORS:WALDE, HILMAR;GROSS, STEFAN;GUCKES, GUNDER;SIGNING DATES FROM 20070111 TO 20070202;REEL/FRAME:019557/0190Feb 23, 2007ASAssignmentOwner name: BRITA GMBH, GERMANYFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WALDE, HILMAR;GROSS, STEFAN;GUCKES, GUNDER;REEL/FRAME:018928/0124;SIGNING DATES FROM 20070111 TO 20070202Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WALDE, HILMAR;GROSS, STEFAN;GUCKES, GUNDER;SIGNING DATESFROM 20070111 TO 20070202;REEL/FRAME:018928/0124Owner name: BRITA GMBH, GERMANYFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WALDE, HILMAR;GROSS, STEFAN;GUCKES, GUNDER;SIGNING DATESFROM 20070111 TO 20070202;REEL/FRAME:018928/0124RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services