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CN-122006328-A - Filter system, closing element and filter element

CN122006328ACN 122006328 ACN122006328 ACN 122006328ACN-122006328-A

Abstract

The invention relates to a filter system (200) having a housing (210), wherein a replaceable filter element (100) is arranged between a filter front side (202) and a filter rear side (204), the filter element (100) comprising an element fixing central tube (150), wherein a closing element (10) is arranged on the housing side, wherein the closing element (10) opens the filter rear side fluid outlet (250) when the filter element (100) has been inserted, and wherein the closing element (10) blocks the filter rear side fluid outlet (250) when the filter element (100) has been removed, wherein the filter element (100) has an actuating element (160) for closing the element (10). The invention also relates to a closing element (10) for the filter system (100).

Inventors

  • R. Salomon
  • WEINDORF MARTIN

Assignees

  • 曼·胡默尔有限公司

Dates

Publication Date
20260512
Application Date
20170112
Priority Date
20160112

Claims (14)

  1. 1. A filtration system (200) for fluids, having a housing (210), wherein a replaceable filter element (100) is arranged between a filter front side (202) and a filter rear side (204), wherein a filter rear side fluid outlet (250) and a central channel (248) are provided in a bottom portion (214) of the housing (210), said central channel (248) being a return to the container, wherein the filter element (100) comprises a filter bellows (110), an element fixing central tube (116) and an element fixing ventilation tube (150), wherein the element fixing ventilation tube (150) is coaxially surrounded by the central tube (116) and the filter bellows (110), Wherein the closing element (10) is arranged on the housing side, wherein the closing element (10) is arranged at the housing side fastening peg (220) with a fastening element (24) having fastening means (14), wherein the closing element (10) opens the filter rear side fluid outlet (250) when the filter element (100) has been inserted, wherein the closing element (10) blocks the filter rear side fluid outlet (250) when the filter element (100) has been removed, Wherein the filter element (100) has an actuating element (160) for the closing element (10), Wherein the closing element (10) is a valve arranged in a bottom portion (214) of the housing (210), comprising a filtered fluid channel (50) and an axially continuous central opening (60) for the element-securing vent tube (150), said axially continuous central opening (60) being configured for fluid-tight connection to the vent tube (150) such that the element-securing vent tube (150) can be connected to the channel (248) for fuel return via the closing element (10).
  2. 2. The filter system according to claim 1, wherein the fastening element (24) of the closure element (10) abuts against the fastening peg (220) on the inside.
  3. 3. The filter system according to claim 1, wherein the fastening element (24) of the closing element (10) abuts against the fastening peg (220) on the outside.
  4. 4. A filter system according to any one of claims 1 to 3, wherein the actuating element (160) comprises one or more axial support ribs (152) of the filter element (100) arranged on the filter rear side and pressed in axial direction against the movable sliding sleeve (40) of the closing element (10).
  5. 5. The filter system according to claim 4, wherein the sliding sleeve (40) is arranged axially movable on the outer side of the fastening pile (220) by means of the inner side (44).
  6. 6. A filter system according to claim 4 or 5, wherein the sliding sleeve (40) is arranged axially movable on the outer side (26) of the fastening element (24) by means of the inner side (44).
  7. 7. The filtration system according to any one of the preceding claims, wherein the filter element (100) is provided with a water separation device (120), the water separation device (120) being arranged on the filtered rear side and comprising a final separator (130) and/or a coalescer, the final separator (130) and/or the coalescer being arranged concentrically around the draught tube (150).
  8. 8. A closure element (10) for a filter system (200) according to any one of claims 1 to 7.
  9. 9. The closure element (10) of claim 8, further comprising a valve body (12) having a seat (30) for a sliding sleeve (40) axially displaceable along the valve body (12), wherein the sliding sleeve (40) has a contact surface (48) for an external actuation element (160) which is removable from the seat (30) when acted upon by the actuation element (160).
  10. 10. The closure element according to claim 9, wherein the sliding sleeve (40) comprises an inner region coaxial with the valve body (12) having one or more through openings (50) and a skirt region (42) arranged coaxially with the inner region and the valve body (12), wherein the sealing surface (38) is arranged at the inner region, the sealing surface (38) being arranged for abutment against the abutment (30) in the closed state.
  11. 11. The closure element according to claim 10, wherein the contact surface (48) is arranged radially outside the sealing surface (38).
  12. 12. A closure element according to any one of claims 9 to 11, wherein, in the mounted state, the skirt region (42) is provided on its inner side (44) as a sealing surface.
  13. 13. A closure element according to any one of claims 9 to 12, wherein the spring receiving region (16) with the compression spring (22) for moving the sliding sleeve (40) is configured downstream of the abutment (30).
  14. 14. A closure element according to any one of claims 9 to 13, wherein a fastening element (24) is provided at the sliding sleeve-side end of the valve body (12).

Description

Filter system, closing element and filter element Technical Field The present invention relates to a filter element for filtering a fluid, in particular fuel or oil, a filter system comprising a filter element, in particular a fuel filter or an oil filter of a vehicle, and a closure element for said filter system. Background When a liquid filter (e.g. a fuel filter for diesel fuel) is in operation, when the filter element has been removed, it is necessary to avoid the transfer of unpurified liquid to the internal combustion engine. EP1937962B1 therefore proposes to provide a sliding valve in the upper region of the filter housing, with a through-opening which is positioned in alignment with the through-opening on the housing-fixing central tube when the filter element has been inserted. However, filter systems are also known which do not have a housing-fixed central tube, wherein instead a filter element is used which comprises an element-side central tube. Such a filtration system is described for example in WO2014/191486 A1. Disclosure of Invention The invention thus deals with the problem of constructing a filter system so that contamination of the filter rear side can be avoided easily and reliably also when the filter element is removed, i.e. in the case of a fixed element center tube. The invention also addresses the problem of creating a closure element for a filtration system comprising an element-securing base pipe. The above-mentioned problems are according to one aspect of the invention solved by means of a filter system comprising a housing in which a replaceable filter element is arranged between a filter front side and a filter rear side, the filter element comprising an element-fixing central tube and having a closing element on the housing side, which closing element closes the filter rear side when the filter element is removed. According to another aspect of the invention, this problem is solved by a closing element that can be actuated by an element-fixing actuating element of a replaceable filter element. Advantageous configurations and advantages of the invention result from the appended claims, description and drawings. A filtration system is proposed having a housing in which a replaceable filter element is arranged between a filter front side and a filter rear side, the filter element comprising an element fixing central tube, wherein a closing element is provided on the housing side, which closing element opens the filter rear side fluid outlet when the filter element has been inserted, and which closing element blocks the filter rear side fluid outlet when the filter element has been removed, wherein the filter element has an actuating element for the closing element. The filter system may be specifically arranged to filter fuel in a vehicle having an internal combustion engine. The filter element may in particular be equipped with an element-securing ventilation tube. When the filter element is removed, the closure element reliably separates the rear side of the filter from the front side of the filter. This makes it possible to prevent raw fuel from reaching the filtered rear side during maintenance. The closing element makes it possible to use an installation space inside the filter element for efficiently separating water from the filtered fuel. The closing element reduces the pressure loss, since no housing fixing central tube or labyrinth deflector is required in the flow path of the fluid. During maintenance, the filter basin can be cleaned or flushed. The closing element is a less heavy and smaller component than the housing securing the central tube. The closing element requires a valve arranged in the bottom part of the housing. This results in a particularly advantageous arrangement in the filter element for pressure loss and flow behavior. According to a preferred embodiment, the closing element can be arranged with fastening means on the housing-side fastening peg (FASTENING STUB), wherein the region of the closing element abuts against its outer or inner wall. This results in a very compact arrangement that can be presented as advantageous for the tool. In one embodiment, the fastening means of the closure element may abut against the fastening peg on the inside. The outer wall of the fastening peg can then advantageously be used to seal and act as a sliding surface for the sliding sleeve of the closure element. The purified fluid can be guided into the region of the interior space of the closure element. Alternatively, the fastening means of the closing element may abut against the fastening peg on the outside. The outer side of the fastening means can then advantageously be used to seal and serve as a sliding surface for the sliding sleeve of the closure element. The purified fluid can be guided into the region of the interior space of the closure element. According to a preferred embodiment, the actuation element may comprise one or more axial support ribs of the f