Hydac Filtertechnik Gmbh

Andreas Schmitz

Matthias Schwender

Edwin Koch

John Kazimierz Duchowski

Claudia Brocker

Timo Lang

Stefan Jochum

A support structure () for a filter element includes at least one surface part (), in which one or more fluid passage openings (-) with predetermined opening cross-sections are formed. The opening cross-section of at least one fluid passage opening (-) is at least partially elliptical-shaped.

Support structure for a filter element

A filtering element for filtering devices, comprising a filtering material () which defines a filtering space and is intended for the filtration of fluids, and at least one water indicator () which is provided at a location coming into contact with fluid during the filtration mode and indicates the presence of water in the fluid in a visually recognizable manner, is characterized in that the at least one water indicator () is provided on an end cap () for mounting at one end of the filtering material (), and/or is at least partially part of the end cap (), and/or is provided on a fluid-permeable supporting structure () surrounding the filtering material (), and/or is at least partially part of the supporting structure ().

Filtering element

A filter material () for fluids, in particular hydraulic fluids, includes a filter medium () having at least one layer, and a supporting structure () partially made of a plastic material and resting flatly in some surface areas on at least one side of the filter medium (). The filter medium () and the supporting structure () are connected to one another by laminating, covering and/or by a melting process.

Filter material for fluids and method for producing a filter material

A filter has a filter medium () during operation clears fluid, particularly in the form of hydraulic fluid. The filter medium () is made of a material such that the potential difference to the fluid to be cleaned is low. The parts of the filter medium () have different potentials with respect to each other and/or the fluid to be cleaned such that they cancel each other at least partially, specific dissipation is aspired, or a return of electric charge to the associated filter medium () is provided, using a charge equalization situation.

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Kirkel, Germany

Andreas Schmitz