Filter insert, and filter comprising a filter insert and a housing

摘要

A filter (10) for removing oil from air exiting an air compressor or a vacuum pump includes a housing (11) and at least one filter element (12, 13), the end region of which is adhesively bonded to a flange (14). The flange (14) has a flanged edge (15) and a bead (16) which is adjacently arranged to the edge, the edge and the bead together forming a groove (17) into which the filter element (12, 13) and an adhesive (20) is introduced.

主权项

1. A filter comprising:
a housing having an open end opening into a receptacle in an interior of the housing; a filter insert that is replaceably inserted into the receptacle, the filter insert comprising:
at least one hollow cylindrical filter element;a flange adhesively bonded onto an axial end of the at least one hollow cylindrical filter element, the adhesive arranged at and extending into an axial end region of the at least one hollow cylindrical filter element;wherein the flange has an axially inwardly extending edge that is flanged and arranged in a radial interior of the at least one hollow cylindrical filter element;wherein the flange has an axially inwardly extending annular bead arranged adjacently to the radially inner edge and at a radially outer side of the at least one hollow cylindrical filter element;wherein spacing of the edge and bead form an axially inwardly open circular groove in the axially inner side of the flange;wherein the axial end of the at least one hollow cylindrical filter element is arranged in the circular groove of the flange;wherein the adhesive is arranged within the groove and on the axial end of the at least one hollow cylindrical filter element, the adhesive securing the at least one hollow cylindrical filter element into the groove of the flange;wherein an axially outer face of the flange between the bead and the edge of the groove forms a ring shaped support region in the axially outer face of the flange;wherein in a non-operating pressureless state, the support region of the flange and a the sealing region of the flange lie substantially in one plane;wherein, when in a pressurized operating state, the support region elastically deforms axially outwardly relative to the sealing region, to contact against and receive support on an interior side of the housing;wherein the at least one hollow cylindrical filter element includes:
a cylindrical primary filter element; anda cylindrical secondary filter element; andwherein the primary filter element is a coalescing filter element; and a cover arranged over the filter insert and closing over the open end of the housing; wherein the flange edge and the flange bead protrude axially into the receptacle; wherein, when in the operating state, the support region elastically deforms axially outwardly to contact against and rest against an interior side of the cover.