Filter cartridge and apparatus for the filtration of liquids

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, 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′).

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.

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, 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.