Treatment device for treating fluids, in particular liquid fluids, and treatment element of treatment device
A filter device for treating fluids, in particular for filtering fluids such as fuel, oil, or water, has a housing ( 56 ) with a housing pot ( 58 ), a housing cover ( 60 ), at least one inlet ( 88 ) for the fluid to be treated, and at least one outlet ( 82 ) for the treated fluid. A connecting head ( 12 ) has at least one feed ( 16 ) for the fluid to be treated and connectable to the at least one inlet ( 88 ), and/or at least one discharge ( 18 ). The connecting head ( 12 ) and the treatment element ( 14 ) can be connected to each other by means of a releasable bayonet-type connecting device ( 34 ) through the execution of a rotational/plug-in movement about a connecting axis ( 20 ) of the treatment device ( 10 ).
1. A treatment device ( 10 ) for filtering fluids comprising:
a treatment element ( 14 ), comprising:
a housing ( 56 ) having
a housing pot ( 58 ) having
a circumferential outer wall elongated along and closing around a connecting axis ( 20 );
a housing bottom ( 62 ) closing a first axial end of the housing pot ( 58 );
a housing cover ( 60 ) secured onto a second axial end of the housing ( 56 ) and extending across the second axial end of the housing pot ( 58 ), the housing cover including:
at least one inlet ( 88 ) for the fluid to be treated; and
at least one outlet ( 82 ) for the treated fluid;
a connecting head ( 12 ) configured to engage with and mount the treatment element onto the connecting head, the connecting head comprising:
at least one feed ( 16 ) for the fluid to be treated, said at least one feed ( 16 ) connected to the at least one inlet ( 88 ) of the treatment element ( 14 ) when the treatment element ( 14 ) engages and mounts to the connecting head ( 12 );
at least one discharge ( 18 ) for treated fluid which is fluidically connected to the at least one outlet ( 82 ) of the treatment the treatment element ( 14 ) when the treatment element ( 14 ) engages and mounts to the connecting head ( 12 );
wherein the connecting head ( 12 ) and the treatment element ( 14 ) engage and mount together by a releasable bayonet-type connecting device ( 34 ), through an execution of a rotational/plug-in movement about the connecting axis ( 20 ) of the treatment device ( 10 );
wherein the treatment element ( 14 ) comprises a first set of components of the releasable bayonet-type connecting device ( 34 ), including:
at least one housing connection part ( 100 ), arranged on an axially outer surface of the housing cover, and arranged on a radially inner surface of the circumferential outer wall at the second axial end, the at least one housing connection part ( 100 ) having an S-shaped cross section having:
a lower portion of the S-shaped cross section arranged on the housing cover and contacting against the radially inner surface of the circumferential outer wall; and
an upper portion of the S-shaped cross section spaced axially outwardly away from the lower portion of the S-shaped cross section and the housing cover ( 60 ), the upper portion of the S-shaped cross section projecting radially inwardly over the housing cover ( 60 ) in a direction towards the at least one outlet ( 82 ), the upper portion of the S-shaped cross section having an axially inner functional surface ( 106 ) facing the housing cover ( 60 );
wherein the connecting head ( 12 ) comprises a complimentary second set of components of the releasable bayonet-type connecting device ( 34 ), including:
an outer cylindrical wall ( 28 ) projecting axially outwardly towards the treatment element ( 14 ) and radially enclosing an annular connection space ( 30 ) on the connecting head ( 12 );
at least one head connecting part ( 32 ) arranged in the annular connection space ( 30 ), the at least one head connecting part ( 32 ) having a second S-shaped cross section, a first portion of the second S-shaped cross section arranged on the connecting head ( 12 );
a second portion of the second S-shaped cross section spaced axially outwardly away from the first portion of the second S-shaped cross section, the second portion of the second S-shaped cross section projecting radially outwards the outer cylindrical wall ( 28 ) with a counter functional surface ( 44 ) engaging against the axially inner functional surface ( 106 ) of the treatment element( 14 );
wherein the at least one housing connecting part ( 100 ) is secured onto the second axial end of the circumferential outer wall of the housing pot ( 58 );
wherein a material thickness of the at least one housing connection part ( 100 ) is constant at least in a region of the axially inner functional surface ( 106 );
wherein the housing cover ( 60 ) of the treatment element( 14 ) includes a tubular projection ( 92 ) which projects axially outward away from the treatment element ( 14 ), the tubular projection ( 92 ) surrounding the at least one outlet ( 82 ) of the housing cover ( 60 ), and having a sealing groove ( 94 ) formed on the tubular projection ( 92 ) and further having an outer sealing ring ( 96 ) arranged in the sealing groove ( 94 );
wherein the outer sealing ring ( 96 ) is arranged radially within the at least one housing connection part ( 100 ) of the treatment element ( 14 ).
2. The treatment device ( 10 ) according to claim 1 , wherein
the outer sealing ring ( 96 ) projects upward by up to 5 mm in the axial direction beyond an uppermost point of the housing connecting part ( 100 ) in the axial direction, and projects downward by up to 5 mm in the axial direction beyond a lowermost point of the housing connecting part ( 100 ) in the axial direction.
3. The treatment device ( 10 ) according to claim 2 , wherein
the outer sealing ring ( 96 ) is arranged radially within the housing connecting part ( 100 ).
4. The treatment device according to claim 1 , wherein
the counter functional surface ( 44 ) and the axially inner functional surface functional surface ( 106 ) interacting therewith each comprise at least one latch element ( 46 , 110 ) as a latching projection or a latch section of at least one catch lock, which latch one behind the other or with or into one another in the closed position of the releasable bayonet-type connecting device ( 34 ).
5. The treatment device according to claim 1 , wherein
the connecting device ( 34 ) comprises a leaf spring ( 54 ) arranged on the connecting head ( 12 ) mechanically biasing the counter functional surface ( 44 ) against the axially inner functional surface ( 106 ).
6. The treatment device according to claim 1 , wherein
a material thickness of the at least one head connecting part ( 32 ) and/or the at least one housing connection part ( 100 ) is at most 3 mm.
7. The treatment device according to claim 1 , wherein
an axial extension of the head-side insertion gap ( 50 ) is at most 3 mm.
8. The treatment device according to any of the preceding claims 1 , wherein the at least one counter functional surface ( 44 ) and the axially inner functional surface ( 106 ) interacting therewith each travel approximately helically about the connecting axis ( 20 ).
9. The treatment device according to claim 1 , wherein
the housing cover ( 60 ) and/or an end plate ( 68 ) of a filter element ( 64 ) and the connecting head ( 12 ) each comprise at least one correspondence element as a sealing connecting piece ( 92 ) and/or cylindrical connecting piece ( 83 ), which correspond in a pairwise manner when the treatment element ( 14 ) is mounted.
10. The treatment device according to claim 9 , wherein
at least one pair of correspondence elements ( 22 , 83 ) is arranged within at least one other pair of correspondence elements ( 24 , 92 ).
11. The treatment device according to claim 1 , wherein
the at least one head connecting part ( 32 ) and/or the at least one housing connecting part ( 100 ) is/are made out of sheet metal or comprise(s) sheet metal.
12. The treatment device of claim 1 , wherein
wherein a material thickness of the at least one housing connection part ( 100 ) is constant at least in the region of the axially inner functional surface ( 106 );
wherein the second S-shaped cross section has an insertion opening which, during mounting, receives and engages the upper portion of the S-shaped cross section of the treatment element ( 14 );
wherein the connecting head ( 12 ) includes
an axially elongated guide peg ( 48 ) arranged at the insertion opening of the second S-shaped cross section, the axially elongated guide peg ( 48 ) having an axially outer end spaced away from the counter functional surface ( 44 ) of the at least one head connecting part ( 32 );
wherein a head-side insertion gap ( 50 ) is formed between and delimited by the counter functional surface ( 44 ) and the axially outer end of the axially elongated guide peg ( 48 );
wherein the at least one housing connection part ( 100 ) is received into the head-side insertion gap ( 50 ) when the releasable bayonet-type connecting device ( 34 ) engages.
13. A treatment element ( 14 ) of a treatment device for treating and/or filtering fluids, comprising:
a housing ( 56 ) having
a housing pot ( 58 ) having
a circumferential outer wall elongated along and closing around a connecting axis ( 20 );
a housing bottom ( 62 ) closing a first axial end of the housing pot ( 58 );
a housing cover ( 60 ) secured onto a second axial end of the housing ( 56 ) and extending across the second axial end of the housing pot ( 58 ), the housing covers including:
at least one inlet ( 88 ) for the fluid to be treated; and
at least one outlet ( 82 ) for the treated fluid;
wherein the treatment element ( 14 ) is configured and adapted to connect to a connecting head ( 12 ) of the treatment device ( 10 ) by means of a releasable bayonet-type connecting device ( 34 ) through an execution of a rotational/plug-in movement about a connecting axis ( 20 ) of the treatment device ( 10 ); and
the the releasable bayonet-type connecting device ( 34 ) has at least one housing connecting part ( 100 ) on the side of the housing ( 56 ) that configured to engage and mount with at least one head connecting part ( 32 ) on the side of the connecting head ( 12 ) for the purpose of connecting the connecting device ( 34 );
wherein components of the releasable bayonet-type connecting device ( 34 ) on the treatment element ( 14 ) include:
at least one housing connection part ( 100 ), arranged on an axially outer surface of the housing cover, and arranged on a radially inner surface of the circumferential outer wall at the second axial end, the at least one housing connection part ( 100 ) having an S-shaped cross section having:
a lower portion of the S-shaped cross section arranged on the housing cover and contacting against the radially inner surface of the circumferential outer wall; and
an upper portion of the S-shaped cross section spaced axially outwardly away from the lower portion of the S-shaped cross section and the housing cover ( 60 ), the upper portion of the S-shaped cross section projecting radially inwardly over the housing cover ( 60 ) in a direction towards the at least one outlet ( 82 ), the upper portion of the S-shaped cross section having an axially inner functional surface ( 106 ) facing the housing cover ( 60 );
wherein the at least one housing connecting part ( 100 ) is secured onto the second axial end of the circumferential outer wall of the housing pot ( 58 );
wherein a material thickness of the at least one housing connection part ( 100 ) is constant at least in a region of the axially inner functional surface ( 106 );
wherein the housing cover ( 60 ) of the treatment element ( 14 ) includes a tubular projection ( 92 ) which projects axially outward away from the treatment element ( 14 ), the tubular projection ( 92 ) surrounding the at least one outlet ( 82 ) of the housing cover ( 60 ), and having a sealing groove ( 94 ) formed on the tubular projection ( 92 ) and further having an outer sealing ring ( 96 ) arranged in the sealing groove ( 94 );
wherein the outer sealing ring ( 96 ) is arranged radially within the at least one housing connection part ( 100 ) of the treatment element ( 14 ).
14. The treatment element ( 14 ) according to claim 13 , wherein
the at least one housing connecting part ( 100 ) is attached to the housing by means of a crimped connection between the housing cover and the housing pot.
15. The treatment element ( 14 ) according to claim 13 , wherein
the connecting part ( 100 ) is attached to the housing by means of a materially integral connection to the housing cover and/or to the housing pot.
16. The treatment element ( 14 ) according to claim 13 , wherein
the housing cover ( 60 ) comprises sheet metal.
17. The treatment element ( 14 ) according to claim 13 , wherein
the material thickness of the housing cover ( 60 ) is 0.4 to 1 mm.
18. The treatment element ( 14 ) according to claim 13 , wherein
the outer sealing ring ( 96 ) projects upward by up to 5 mm in the axial direction beyond an uppermost point of the housing connecting part ( 100 ) in the axial direction, and projects downward by up to 5 mm in the axial direction beyond a lowermost point of the housing connecting part ( 100 ) in the axial direction.
19. The treatment element ( 14 ) according to claim 18 , wherein
the outer sealing ring ( 96 ) is arranged radially within the housing connecting part.
20. The treatment element ( 14 ) according to claim 13 , wherein
the at least one housing connecting part ( 100 ) is made of sheet metal or comprises sheet metal.
21. The treatment element ( 14 ) according to claim 13 , wherein
the material thickness of the at least one connecting part ( 100 ) is at most 3 mm.
22. The treatment element ( 14 ) according to claim 13 , wherein
the axially inner functional surface ( 106 ) comprises at least one latch element ( 110 ) as a latching projection or a latch section, of at least one catch lock.
23. The treatment element ( 14 ) according to claim 13 , wherein
the axially inner functional surface ( 106 ) travels approximately helically about the connecting axis ( 20 ).