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AssigneeAQUIS WASSER-LUFT-SYSTEME GMBH, LINDAU; Zweingniederlassung Rebstein
InventorsKurt Wallerstorfer, Andreas Wawrla, Roland Scholz
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A tank is proposed for appliances which use water, in particular domestic appliances or appliances for preparation of foodstuffs and/or drinks, such as automatic drinks machines, in particular automatic coffee machines, drinking water dispensers, cooking and baking appliances, steam appliances, in particular steam irons, steam cleaners, high-pressure cleaners, air cleaners and conditioners or the like, wherein a suction connection is provided on the tank in order to suck in water from the tank by means for production of a reduced pressure, and a filter connection is provided for connection of a filter cartridge in the interior of the tank, while ensuring that only one permissible filter type is used. A tank according to the invention is distinguished by mechanical coding structures on the filter connecting element, in order to prevent the use of a filter cartridge which does not correspond to the tank.
A tank for appliances which use water, in particular domestic appliances, such as automatic drinks machines, in particular automatic coffee machines, drinking water dispensers, cooking and baking appliances, steam appliances, in particular steam irons, steam cleaners, high-pressure cleaners, air cleaners and conditioners or the like, wherein a suction connection is provided on the tank in order to suck in water from the water tank by means for production of a reduced pressure, and a filter connection is provided for connection of a filter cartridge in the interior of the tank, characterized in that the filter connection (1) is provided with at least one coding structure which comprises at least one axial projection (99) and/or at least one axial recess (38) and fits a complementary coding structure (98, 37) of a matching filter cartridge (31) on the key/lock principle.
The tank as claimed in one of the above-mentioned claims, characterized in that the filter connection of the water tank and a connecting stub of the filter cartridge at least partially surround one another.
The tank as claimed in one of the above-mentioned claims, characterized in that the coding structures extend in the axial and/or radial direction with respect to the axis of the connecting stub of the filter cartridges which are used.
The tank as claimed in one of the above-mentioned claims, characterized in that the coding structures are at least partially designed at the same time as fixing elements (16) for attachment of the filter cartridge.
The tank as claimed in one of the above-mentioned claims, characterized in that a sealing surface is provided for a filter-side axial seal.
The tank as claimed in one of the above-mentioned claims, characterized in that the coding is provided by the number and/or the spatial distribution and/or shape of individual coding elements of the coding structure.
The tank as claimed in one of the above-mentioned claims, characterized in that the coding structure is provided on the circumference of the tank-side filter connecting element.
The tank as claimed in one of the above-mentioned claims, characterized in that a structure (23) with a circumference which is not round is provided on the tank-side filter connecting element.
The tank as claimed in one of the above-mentioned claims, characterized in that a circumferential surface is provided as a sealing surface (24) on the tank-side filter connecting element.
The tank as claimed in one of the above-mentioned claims, characterized in that the tank-side filter connecting element has a circumferential surface (24) with a polygonal cross section.
The tank as claimed in one of the above-mentioned claims, characterized in that the tank-side filter connecting element has a circumferential shape (24) with a rotationally symmetrical cross section.
The tank as claimed in one of the above-mentioned claims, characterized in that the tank-side filter connecting element has a circumferential shape (24) with a quadrilateral cross section, hexagonal cross section, octagonal cross section or the like.
The tank as claimed in one of the above-mentioned claims, characterized in that the filter-side tank connecting element is formed as a coding structure and a molded seal (32) with a correspondingly formed circumferential surface.
The tank as claimed in one of the above-mentioned claims, characterized in that a coding structure (37, 38) is provided, and is arranged externally on the housing of the filter cartridge in the installed state.
The tank as claimed in one of the above-mentioned claims, characterized in that a latch is provided between the filter cartridge and the tank-side filter connecting element.
The tank as claimed in one of the above-mentioned claims, characterized in that a blending setting is provided for blending filtered liquid with unfiltered liquid and/or liquid which has been prepared in another manner.
The tank as claimed in one of the above-mentioned claims, characterized in that a seal (32) is provided between the tank-side filter connecting element and the filter-side tank connecting element and, at least in places, has a cross section which is not round.
The tank as claimed in one of the above-mentioned claims, characterized in that a seal (32) with a coding structure is provided between the tank-side filter connecting element and the filter-side tank connecting element.
The tank as claimed in one of the above-mentioned claims, characterized in that an opening with a coding structure for insertion of a filter-side key element is provided in the tank bottom.
The tank as claimed in one of the above-mentioned claims, characterized in that radial coding structures are provided.
The tank as claimed in one of the above-mentioned claims, characterized in that an adapter (85) for the connection of a filter cartridge (31) is provided on the tank-side filter connecting element (1).
The tank as claimed in one of the preceding claims, characterized in that an adapter (86) for connection to an appliance is provided on the tank-side appliance connecting element (68).
An appliance, in particular a domestic appliance which uses water or an appliance for preparation of foodstuffs and/or drinks, such as automatic drinks machines, in particular automatic coffee machines, drinking water dispensers, cooking and baking appliances, steam and/or high-pressure cleaners, air cleaners and conditioners or the like, having a tank, characterized in that the tank is designed as claimed in one of claims 1 to 23.
Dependencies are inferred from the claim text.