Filter device and filter element

摘要

A filter device includes a filter element (9) received in a housing (1). The housing can be closed by a cover part (3) having fluid ducts (35, 41). A connecting unit is provided to create a fluid-conducting connection between the filter element (9) and an associated fluid duct (35) of the cover part (3). The connecting unit is in the form of a coupling having a movable coupling part (33) creating the fluid connection in the functional state.

主权项

1. A filter device, comprising:
a housing with first and second opposite housing ends; a filter element received in said housing and having opposite first and second element ends and a guide duct; a cover part closing said first housing end and having first and second fluid ducts; a connecting unit forming a fluid-conducting connection between said first fluid duct and said filter element, said connecting unit having an axially movable coupling part on said filter element at said first housing end being axially movable relative to said filter element and establishing the fluid-conducting connection in an operating state of said connecting unit, said movable coupling part adjoining a stationary coupling part of said connecting unit on said cover part, said movable coupling part being spring pretensioned in a direction away from said second element end against said stationary coupling part to form a seal therebetween by a spring in said filter element, said movable coupling part including a sleeve body displaceably guided in said guide duct; and a position limiter on said filter element engaging said movable coupling part to limit axial motion thereof in an end position thereof under spring pretensioning, said position limiter including a step on said guide duct constricting said guide duct and including a stop on the outer periphery of said sleeve body.