US 12,358,811 B2
Filter cartridge
Kurt Wallerstorfer, Strasswalchen (AT)
Assigned to ACLARIS WATER INNOVATIONS GMBH, LINDAU, ZWEIGNIEDERLASSUNG REBSTEIN, Rebstein (CH)
Appl. No. 18/043,844
Filed by ACLARIS WATER INNOVATIONS GMBH, LINDAU, ZWEIGNIEDERLASSUNG REBSTEIN, Rebstein (CH)
PCT Filed Sep. 1, 2021, PCT No. PCT/EP2021/074116
§ 371(c)(1), (2) Date Mar. 2, 2023,
PCT Pub. No. WO2022/049115, PCT Pub. Date Mar. 10, 2022.
Claims priority of application No. 10 2020 123 004.4 (DE), filed on Sep. 3, 2020; application No. 10 2020 123 005.2 (DE), filed on Sep. 3, 2020; and application No. 10 2021 107 068.6 (DE), filed on Mar. 22, 2021.
Prior Publication US 2023/0242416 A1, Aug. 3, 2023
Int. Cl. C02F 1/00 (2023.01); B01D 27/08 (2006.01); B01D 35/027 (2006.01)
CPC C02F 1/003 (2013.01) [B01D 27/08 (2013.01); B01D 35/0276 (2013.01); B01D 2201/4023 (2013.01); B01D 2201/4046 (2013.01); C02F 2201/004 (2013.01); C02F 2201/006 (2013.01); C02F 2307/12 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A filter cartridge for a household appliance, which is provided with: a filter housing having a filter housing wall which separates a housing internal side from a housing external side, a filter inlet opening which, in an operation of the filter cartridge, is open in relation to an external environment of the filter housing, a guide structure proximate the filter inlet opening for guiding and receiving a tank-proximal centering element, a device for water conduction disposed in an interior of the filter housing downstream of the filter inlet opening relative to a flow direction during operation, the device comprises at least one filter chamber having at least one filter medium and terminates in a filter outlet opening for suctioning water from the filter cartridge, and a filter connection element having a filter port which has a filter sealing face for connection of the filter cartridge to a tank sealing face in a water tank, wherein
a profile of the filter sealing face comprises a first wall along a circumference of the filter port and has a variable radius in relation to a central axis, so that the first wall comprises radial convexities and radial concavities, wherein the radial convexities and the radial concavities have a round profile and periodically oscillate around a circular line,
the radial convexities form convex circular segments,
the radial concavities form concave circular segments,
the guide structure comprises a second wall disposed between the central axis and the first wall,
the second wall comprises a second wall external side and a second wall internal side,
the guide structure comprises at least one guide groove, each guide groove, of the at least one guide groove, is positioned on the second wall internal side, such that each guide groove faces toward the central axis, and
each guide groove, of the at least one guide groove, is radially aligned, relative to the central axis, with a respective radial convexity, of the radial convexities of the first wall, and is configured to receive a portion of the tank-proximal centering element.