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 ) configured as a replaceable spin-on unit, the treatment element ( 14 ) comprising:
a housing having:
a housing pot ( 58 );
a housing cover ( 60 ) closing an open end of the housing pot ( 58 ), the housing cover comprising:
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 and mount the treatment element ( 14 ), the connecting head ( 12 ) comprising:
at least one feed ( 16 ) for the fluid to be treated, said feed fluidically 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 ), and or
at least one discharge ( 18 ) for the treated fluid, said discharge ( 18 ) fluidically connected to the at least one outlet ( 82 of 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 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 );
wherein the releasable bayonet-type connecting device ( 34 ) includes:
on the treatment element ( 14 ):
at least one housing connection part ( 100 ), arranged on an axially outer side of the housing cover, 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
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 cover, the upper portion of the S-shaped cross section projecting radially inwardly over the cover in a direction towards the at least one outlet and having an axially inner functional surface ( 106 ) facing the housing cover ( 60 );
on the connecting head ( 12 ):
an outer cylindrical wall ( 28 ) projecting axially outwardly towards the treatment element ( 14 ) and enclosing a, 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, the second S-shaped cross section projecting axially outwardly away from the annular connection space ( 30 ) and having 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 attached to the housing by means of a crimped connection between the housing cover and the housing pot;
wherein the housing cover ( 60 ) includes a stepped coaxial outer sealing connecting piece ( 92 ) surrounding the at least one inlet ( 88 ), the stepped coaxial outer sealing connecting piece ( 92 ) having a sealing groove ( 94 ) with an outer sealing ring ( 96 ) arranged therein.
2. The treatment device ( 1 ) according to claim 1 , wherein
the outer sealing ring ( 96 ) is arranged radially within the housing connecting part ( 100 ).
3. The treatment device according to claim 1 , wherein
on a radially outer side of the at least one head connecting part ( 32 ), at least one axially outwardly projecting guide peg ( 48 ) is arranged, which delimits at least one insert gap ( 50 ) with the at least one counter functional surface ( 44 ), and
the at least one first connecting part ( 100 ) can be guided in the at least one insert gap when the connecting device ( 34 ) is being opened/closed,
wherein the counter function surface ( 44 ) of the connecting head ( 12 ) engages against and is guided along the axially inner function surface ( 106 ) of the treatment element ( 14 ).
4. The treatment device according to claim 1 , wherein
the at least one counter functional surface ( 44 ) and the at least one axially inner functional surface ( 106 ) interacting therewith each comprise at least one latching projection ( 46 , 110 ) of at least one catch lock, which latch one behind the other or with or into one another in a closed position of the at least one releasable bayonet-type connecting device ( 34 ).
5. The treatment device according to claim 1 , wherein
the releasable bayonet-type connecting device ( 34 ) comprises at least one annular leaf spring biasing element ( 54 ; 190 ) for realizing a mechanical biasing with which the counter functional surface ( 44 ) is pressed 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 connecting part ( 100 ) is at most 3 mm.
7. The treatment device according to claim 1 , wherein
an axial extension of the at least one insert gap ( 50 ) is at most 3 mm.
8. The treatment device according to claim 1 , wherein
the 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
a material thickness of the at least one housing connecting part ( 100 ) and/or the at least one head connecting part ( 32 ) is respectively constant in a circumferential direction, at least in a region of the axially inner functional surface ( 106 ) and counter functional surface ( 44 ).
12. 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.
13. The treatment element ( 14 ) according to claim 1 , wherein
a material thickness of the at least one connecting part ( 100 ) is at most 3 mm.
14. The treatment element according to claim 1 , wherein
the at least one functional surface ( 106 ) respectively comprises at least one latch element ( 110 ) as a latching projection or a latch section, of at least one catch lock.
15. The treatment element according to claim 1 , wherein
the at least one functional surface ( 106 ) respectively travels approximately helically about the connecting axis ( 20 ).
16. A treatment element ( 14 ) for a treatment device ( 10 ), the treatment element comprising:
a housing having:
a housing pot ( 58 );
a housing cover ( 60 ) closing an open end of the housing pot ( 58 ), the housing cover comprising:
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 ) can be connected 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 );
wherein the releasable bayonet-type connecting device ( 34 ) on the treatment element ( 14 ) includes:
at least one housing connection part ( 100 ), arranged on an axially outer side of the housing cover, 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
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 cover, the upper portion of the S-shaped cross section projecting radially inwardly over the cover in a direction towards the at least one outlet and having an axially inner functional surface ( 106 ) facing the housing cover ( 60 );
wherein the housing cover ( 60 ) includes a stepped coaxial outer sealing connecting piece ( 92 ) surrounding the at least one inlet ( 88 ), the stepped coaxial outer sealing connecting piece ( 92 ) having a sealing groove ( 94 ) with an outer sealing ring ( 96 ) arranged therein.
17. The treatment element ( 14 ) according to claim 16 , 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.
18. The treatment element ( 14 ) according to claim 16 , wherein
the at least one housing 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.
19. The treatment element ( 14 ) according to claim 16 , wherein
the housing cover ( 60 ) comprises sheet metal.
20. The treatment element ( 14 ) according to claim 19 , wherein
a material thickness of the housing cover ( 60 ) is 0.4 to 1 mm.
21. The treatment element ( 14 ) according to claim 16 , wherein
the outer sealing ring ( 96 ) is arranged radially within the housing connecting part.
22. The treatment element ( 14 ) according to claim 16 , wherein
the at least one housing connecting part ( 100 ) is made completely of sheet metal or comprises sheet metal.
23. The treatment element ( 14 ) according to claim 22 , wherein
a material thickness of the at least one housing connecting part ( 100 ) is constant at least in a region of the axially inner functional surface ( 106 , 108 ).