Filter device for fluids and method for filtering fluids
OwnerGuenther Rassingerinventor
Life of this patent
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Abstract
A filter device 10 for fluids, especially for motor oil, hydraulic oil, has a filter case 1 comprising one or two filter inlets 2 and one filter outlet 3. The filter case contains one filter 4 consisting of at least two ring-shaped filter elements 7, 8 which concentrically enclose a central tube 18 of the filter device. In a channel 14 between the two adjacent filter elements there is a duct 16 which is run in the form of a spiral around inner filter element 8 and is embedded in filter 4. In duct 16 there is a pressure-controlled regulating valve 9 which opens when a certain level of pressure is exceeded in the filtered oil.
Claims19
A filter device for fluids including a filter case (1), comprising at least one filter inlet (2) and one filter outlet (3) and an intermediately arranged filter (4), characterized in that said filter has at least two parts and has a duct (16), embedded in said filter (4), said duct (16) provided with a pressure-controlled regulating valve (9), and said duct (16) has openings (17) distributed over its peripheral area and by-passes at least one part of said filter (4).
Dependencies are inferred from the claim text.