Annular filter element, in particular for gas filtration, and filter device

An annular filter element comprising:

• an annular filter medium body which surrounds a longitudinal axis, the annular filter medium body configured to be flowed through in a radial direction by a fluid to be cleaned relative to the longitudinal axis,
• wherein axial, as used herein, refers to a direction of the longitudinal axis,
• wherein radial, as used herein, as a direction traverse to the longitudinal axis;
• a central tube which is annular and elongated axially, the central tube arranged at an radial inner side of the annular filter medium body, the central tube further comprising:
• a support collar which extends circumferentially about and projects radially outwardly from an axial end of the central tube, extending radially outwardly at an axial end face of the annular filter medium body, the support collar comprising:
• a first section of the support collar arranged on the axial end face of the annular filter medium body and projecting radially outwardly from an axial end of the central tube, the first section of the support collar having a grid structure comprising:
• a plurality of radially projecting stays, the radially projecting stays having a radial end joined to the axial end of the central tube, the plurality of radially projecting stays spaced circumferentially apart from each other;
• a plurality of circumferentially extending stays which bridge between and interconnect to adjacent ones of the plurality of radially projecting stays, the plurality of circumferentially extending stays spaced radially apart,
• wherein a radially outer circumferentially extending stay of the plurality of circumferentially extending stays forms a circumferentially extending support stay, supporting the support collar on the axial end face of the annular filter medium body;
• a second section of the support collar arranged at the circumferentially extending support stay, and projecting axially outwardly away from the axial end face of the annular filter medium body,
• wherein an axially outer end face of the second section forms an axial support surface which is configured to support the annular filter element against a housing component,
• wherein the support collar with the first and second sections are formed together with the central tube as one piece;
• a sealing element arranged on and connected to the support collar,
• wherein a radial side face of the second section carries the sealing element and provides a sealing surface for sealing against the housing component,
• wherein the sealing surface is spaced apart from the axial support surface;
• wherein the support collar is formed together with the central tube as one piece.