Patent ID: 11944923
Assignee: ACLARIS WATER INNOVATION GMBH, LINDAU, ZWEIGNIEDERLASSUNG REBSTEIN
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  A | IPC B

Claim 30:
31. A water tank for a household appliance having a connection for a filter cartridge, the water tank comprising:
a tank bottom; and
a tank sealing face on the tank bottom and configured to connect the filter cartridge to the water tank, wherein
the tank sealing face encloses a tank passage opening for water from the filter cartridge to flow through a wall of the tank bottom to the household appliance,
the tank sealing face includes, along a circumference of the tank sealing face, a variable radius in relation to a central axis, so that the tank sealing face comprises radial concavities and radial convexities, wherein the radial convexities and the radial concavities have a round profile, and wherein the radial concavities and the radial convexities are configured to periodically oscillate around a circular line of the tank sealing face,
the tank bottom comprises a fastening ring and an elastomer seal inserted into the fastening ring,
a centering element for insertion into the filter cartridge is provided on the tank bottom, and
the centering element has a bottom plate which lies in a receptacle of the elastomer seal and peripherally engages said receptacle from behind.