Fuel filter with clean water outlet

• US 20050274664A1
• Filed: 03/18/2005
• Published: 12/15/2005
• Est. Priority Date: 03/19/2004
• Status: Active Grant

• Current Assignee: Hengst GmbH & Company KG
• Original Assignee: Hengst GmbH & Company KG
• Inventors: Stoehr, Guido, Schachtrup, Ludger
• Granted Patent: US 7,553,415 B2
• Time in Patent Office: Days
• US Class Current: 210/299
• CPC Class Codes: B01D 2201/305 Snap, latch or clip connecting means
• CPC Class Codes: B01D 29/018 ring shaped
• CPC Class Codes: B01D 29/21 with corrugated, folded or wound sheets
• CPC Class Codes: B01D 29/54 arranged concentrically or coaxially
• CPC Class Codes: B01D 29/96 in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters B01D29/09, B01D29/70 take precedence
• CPC Class Codes: B01D 35/16 Cleaning-out devices , e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
• CPC Class Codes: B01D 36/003 Filters in combination with devices for the removal of liquids B01D35/185 takes precedence
• CPC Class Codes: F02M 37/28 with means activated by the presence of water, e.g. alarms or means for automatic drainage
• CPC Class Codes: F02M 37/42 Installation or removal of filters

Abstract

A process for measuring and controlling the circulation of fluids in endoscope channels that includes placing at least one endoscope into a tank. Further, one or more inlet channels of the endoscope are coupled to one or more valves with connectors, saturating the tank and inlet channels with a fluid from at least one fluid supply in fluid communication with at least one circulation pump. Further still, at least one hermetic chamber having a known volume and the one or more valves, such that the hermetic chamber and valves are completely filled with the fluid. Controlling the fluid flow within the hermetic chamber with at least one controller, wherein the controller controls and records the emptying with one or more sensors detecting a high level and a low level of the fluid, and verifies the known fluid volume and flow rate from the recorded emptying of the hermetic chamber.

Claims

1-13. -13. (canceled)

14. A filter unit comprising:

a collecting chamber for a first fluid separated from a second fluid having an outlet opening for said first fluid,

a settling chamber for particles arranged before said outlet opening in a flow direction of said first fluid.

15. The filter unit in accordance with claim 14, wherein said first fluid is a water and said second fluid is a fuel.

16. The filter unit in accordance with claim 15, wherein a particle filter permeable to the water is arranged behind said settling chamber in said flow direction of the water.

17. The filter unit in accordance with claim 16, wherein said settling chamber is arranged in a removable component.

18. The filter unit in accordance with claim 17, wherein said particle filter is arranged on said removable component.

19. The filter unit in accordance with claim 14, wherein the filter unit includes a housing having a cup shape.

20. The filter unit in accordance with claim 19, wherein the filter unit includes a cylindrical filter element.

21. The filter unit in accordance with claim 20, wherein the filter unit includes a ring having an approximate U-shaped cross section arranged geodetically below a dirty area surrounding at least a portion of said cylindrical filter element.

22. The filter unit in accordance with claim 21, wherein a circular groove formed by said approximate U-shaped cross section forms said settling chamber.

23. The filter unit in accordance with claim 22, wherein said ring, on an outermost circumference, forms an elastically deformable scraper lip structured and arranged to contact the housing.

24. The filter unit in accordance with claim 23, wherein said lip is arranged into several lamellas that are distributed over the circumference of said ring.

25. The filter unit in accordance with claim 23, wherein said lip extends upward and radially outwards from an outer wall of said ring to define said groove.

26. The filter unit in accordance with claim 21, wherein a ring-shaped separation wall extends into said groove, such that said water flowing into said settling chamber, causes a deflection of said first fluid in the flow direction, and said first fluid is guided under said separation wall to an outlet opening of said ring.

27. The filter unit in accordance with claim 26, wherein an inflow opening and said outlet opening of said ring are arranged approximately higher than a lower edge of said separation wall.

28. The filter unit in accordance with claim 21, wherein said ring is connected to said filter element by a clip connection.

29. The filter unit in accordance with claim 26, wherein said separation wall is formed by a rib formed on said filter element.

30. The filter unit in accordance with claim 14, further comprising a hydrophobic filter medium.

31. The filter unit in accordance with claim 30, wherein said filter medium is paper.

32. A filter unit comprising:

a collecting chamber having an outlet opening;

a settling chamber coupled to an inlet opening of said collecting chamber for particles removed from a fluid guided into said collecting chamber; and

said settling chamber being arranged to deflect a flow path of the fluid before entering said inlet opening.