Compact filter comprising a square seal
A filter element comprising a spirally wound filter through which a fluid to be filtered flows axially and which is provided with a mounting ring on the circumference of the wound filter secured to the wound filter by a welded, adhesive, extruded or fused joint. The mounting ring is provided with a circumferential profiled seal which engages a housing in which the filter element is installed to provide a seal between an unfiltered fluid side of the filter element and a filtered fluid side of the filter element.
1. A filter element comprising a wound filter with axial flow channels, said filter element having a mounting ring around its circumference secured to the wound filter by a welded, bonded, extruded or fused connection, wherein the mounting ring carries a circumferential profiled seal which, when the filter element is installed in a housing, engages the housing to provide a seal between an unfiltered fluid side of the filter element and a filtered fluid side of the filter element,
wherein the mounting ring has, on a side facing the filter element, a projection or shoulder into which the filter element is adhesively bonded or welded, and the mounting ring has a circumferential bulge or bead, and
wherein the profiled seal is supported against the bulge or bead, and the profiled seal is fixed in a groove of the mounting ring.
2. A filter element as claimed in claim 1 , wherein said filter element is mounted in an air intake tract of an internal combustion engine.
3. A filter element as claimed in claim 1 , wherein the filter element is an air filter element.
4. A filter element as claimed in claim 1 , wherein in that the profiled seal has a substantially rectangular cross-sectional configuration and is supported against a circumferential collar of the mounting ring.
5. A filter element as claimed in claim 1 , wherein the profiled seal is produced together with the mounting ring in a two-component injection molding process.
6. A filter element as claimed in claim 1 , wherein the seal has an axial sealing action.
7. A filter element as claimed in claim 1 , wherein the seal has a radial sealing action.
8. A filter element as claimed in claim 1 , wherein the seal has both an axial sealing action and a radial sealing action.
9. A filter system for a filter element as claimed in claim 1 , comprising a housing with at least two housing parts assembled to each other, wherein the housing can be separated in the area where the filter element is mounted, and wherein the profiled seal is clamped between the assembled housing parts.
10. A filter system as claimed in claim 9 , wherein the housing parts are connected by latching or clamping closures.
11. A filter system as claimed in claim 9 , wherein the housing is provided with a connection fitting on the filtered fluid side for attaching a filtered fluid duct, and wherein the junction between the filter element and the connection fitting is substantially conical.
12. A filter system as claimed in claim 9 , wherein in the area where the filter element is mounted, the housing parts contact each other with a flange or web surface.