Door actuator has filters with filter portion arranged in frame along fluid flow direction such that fluid from piston flows through filter portion before flowing through filtering fabrics

摘要

The door actuator has a piston that is movably arranged in the housing (60) and operatively connected with a closer shaft of door. The piston is operatively connected with the hydraulic damping device. The filters are arranged in the housing and comprised with filtering fabrics (40,50) which are arranged within a frame (20). A filter portion (30) of the filters is arranged in the frame along fluid flow direction (90,100a-100d) such that the fluid from piston flows through the filter portion before flowing through the filtering fabrics.