Filter Device, Especially an Air Filter

摘要

A filter device comprises a filter element that is comprised of at least two radially nested filter bellows, wherein at least one filter bellows is to be flown through in the radial direction and a flow space for the fluid is formed between the filter bellows. Each filter bellows is embodied as a star-shaped filter with filter folds arranged in a star shape. On at least one end face of the filter element a sealing ring is arranged between a filter bellows and the filter housing.

主权项

1. A multiple bellows air filter element configured for exchangeable installation into and use in a filter housing in which the filter element is flown through by a fluid to be filtered, and in which the filter housing has a cyclone arrangement of individual cyclones having an outflow paths oriented toward an inflow face of the filter element, the filter element comprising:
a fluid flow intake side; a fluid outflow side; wherein said outflow side is spaced apart axially from said inflow side; a first flow face on one axial end of the filter element; a second flow face on an opposing axial end of the filter element; at least two radially nested filter bellows (10,11) arranged radially surrounding a central axis extending through an interior (14) of the filter element (7), the at least two filter bellows including:
a radially outwardly positioned filter bellows (10);a filter bellows (11) that is radially inwardly positioned thereto; wherein at least one filter bellows (10, 11) of said at least two filter bellows is to be flown through in a radial direction; wherein the outwardly positioned filter bellows and the inwardly positioned filter bellows each extend from the first flow face to the second flow face; wherein one of the flow faces of the filter element is an inflow face arranged at the fluid flow intake side; an annular ring-shaped flow opening extending through the second flow face into the interior of the filter element, the annular flow opening extending into an annular ring-shaped flow passage formed by an radially inner surface of the outwardly positioned filter bellows and a radially outer surface of the radially inwardly positioned filter bellows; a second flow opening extending through the first flow face and opening into a second flow passage formed by the radially inner circumferential surface of the inwardly positioned filter bellows; a third flow passage formed at an outer circumference on the radial exterior of the outwardly positioned filter bellows and opening to the fluid flow intake side at the first flow face; wherein the inflow face of the filter element is configured, when the filter element is installed into the housing, to align flow openings of the inflow face with outflow paths of the cyclones of the cyclone arrangement such that individual cyclone outflow paths are directed towards and into respective flow openings of the inflow face.