US 12,268,978 B2
Water tank with filter cartridge
Kurt Wallerstorfer, Strasswalchen (AT)
Assigned to ACLARIS WATER INNOVATIONS GMBH , LINDAU , ZWEIGNIEDERLASSUNG
Appl. No. 18/043,839
Filed by ACLARIS WATER INNOVATIONS GMBH , LINDAU , ZWEIGNIEDERLASSUNG REBSTEIN, Rebstein (CH)
PCT Filed Sep. 1, 2021, PCT No. PCT/EP2021/074146
§ 371(c)(1), (2) Date Mar. 2, 2023,
PCT Pub. No. WO2022/049132, PCT Pub. Date Mar. 10, 2022.
Claims priority of application No. 10 2020 123 009.5 (DE), filed on Sep. 3, 2020; and application No. 10 2021 107 068.6 (DE), filed on Mar. 22, 2021.
Prior Publication US 2023/0256366 A1, Aug. 17, 2023
Int. Cl. B01D 29/96 (2006.01); B01D 29/11 (2006.01); B01D 35/153 (2006.01); C02F 1/00 (2023.01)
CPC B01D 29/96 (2013.01) [B01D 29/114 (2013.01); B01D 35/153 (2013.01); C02F 1/003 (2013.01); B01D 2201/4023 (2013.01); B01D 2201/4046 (2013.01); C02F 2201/006 (2013.01); C02F 2307/12 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A water tank for a domestic appliance, the water tank comprising:
a tank base and an annular tank sealing surface on the tank base configured for a sealed connection of a filter cartridge, wherein the annular tank sealing surface surrounds a tank passage opening for a flow of water through a wall of the tank base to the domestic appliance,
a water passage which bypasses the annular tank sealing surface is provided from outside the annular tank sealing surface inward to the tank passage opening, wherein the water passage can be closed by a filter-side actuation element upon insertion of the filter cartridge,
wherein the annular tank sealing surface has a varying radius in relation to a central axis, such that the annular tank sealing surface comprises an annular elastomer seal in which radial indentations and/or radial protuberances having a round profile are preformed,
wherein the water passage which bypasses the annular tank sealing surface, from outside the annular tank sealing surface inward to the tank passage opening, comprises a bypass channel for unfiltered water from the water tank in the tank base and runs from the water tank interior through the annular elastomer seal,
the bypass channel comprises an annular gap in the annular elastomer seal, and
a portion of the annular elastomer seal forms a deformable closure element, wherein deformation of the deformable closure element is configured to close the bypass channel, and wherein the deformable closure element comprises two opposite annular sealing surfaces in the annular gap, through which the annular gap can be closed by deformation of the annular elastomer seal.