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EP-4122576-B1 - FILTRATION SYSTEM WITH HOUSING AND FILTER ELEMENT

EP4122576B1EP 4122576 B1EP4122576 B1EP 4122576B1EP-4122576-B1

Inventors

  • MALGORN, Gérard

Dates

Publication Date
20260513
Application Date
20190719

Claims (12)

  1. A filtration system (1000) comprising: a housing (1002) defining an internal volume, the housing comprising a housing first end (1036), a housing second end, and a first coupling member (148) formed in the housing, the housing first end being an open end and the housing second end being a closed end; a cylindrical filter element (1004) positioned within the internal volume of the housing, wherein the cylindrical filter element comprises a first endplate adjacent the housing first end, the first endplate comprising an axially protruding flange comprising a radially protruding wall configured to engage an endplate retaining lip (1090) disposed along the first coupling member so as to secure the cylindrical filter element to the housing; a filter head (1008); and a seal member (1052) disposed between the housing first end and the housing second end, the seal member providing a radial seal directly between the housing and the filter head; wherein the filter head comprises a first thread (1016) formed on an internal filter head surface thereof, and wherein the housing further comprises: a second thread (1018) formed on an external housing surface of the housing, the external housing surface of the housing disposed between the first coupling member and the housing second end, the second thread engaging the first thread formed on the filter head surface so as to removably couple the housing and the filter head wherein a seal member channel (1060) is formed on an external housing surface of the housing (1002) between the housing first end (1036) and housing second end, the seal member (1052) is disposed within the seal member channel (1060) on the housing (1002).
  2. The filtration system (1000) of clause 1, wherein the seal member channel (1060) is formed on a second external housing surface of the housing, the second external housing surface disposed between the second thread (1018) and the housing second end, wherein the seal member channel is defined by the second external housing surface and a second internal filter head surface the filter head, the second internal filter head surface disposed below the first thread (1016), and wherein the seal member channel is configured to receive the seal member (1052).
  3. The filtration system (1000) of claim 2, wherein the cylindrical filter element (1004) further comprises a second endplate (132) disposed axially away from the first endplate, and filter media (110) extending axially between the first endplate and the second endplate, the first endplate defining a top surface (172) and a bottom surface (176) substantially parallel to the top surface, the first endplate comprising the axially protruding flange (174) extending from the bottom surface away from the top surface.
  4. The filtration system (1000) of claim 3, wherein the axially protruding flange (174) is continuous around a circumference of the cylindrical filter element (1004).
  5. The filtration system (1000) of claim 3 or claim 4, wherein the axially protruding flange (174) is flexible in the radial direction, towards the filter media (110).
  6. The filtration system (1000) of claim 1, wherein the seal member channel (1060) is formed on a second external housing surface of the housing (1002), the second external housing surface disposed between the second thread (1018) and the housing first end (1036), wherein the seal member channel is defined by the second external housing surface and a second internal filter head surface the filter head, the second internal filter head surface disposed above the first thread (1016), and wherein the seal member channel configured to receive the seal member (1052).
  7. The filtration system (1000) of claim 1, wherein the seal member channel (1060) is formed by a first retaining lip (1066) adjacent to the first coupling member (148), a second retaining lip (1064) disposed axially from the first retaining lip, the second retaining lip substantially parallel to the first retaining lip, and a retaining wall (1062) extending from the first retaining lip toward the second retaining lip, the retaining wall substantially perpendicular to the first retaining lip and the second retaining lip.
  8. The filtration system (1000) of any preceding claim, wherein the second thread (1018) is stamped directly on the housing (1002).
  9. The filtration system (1000) of claim 1, wherein the cylindrical filter element (1004) further comprises a second endplate (132), and filter media (110) positioned between the first endplate and the second endplate.
  10. The filtration system (1000) of any preceding claim, wherein the second thread defines an undulating pattern.
  11. The filtration system (1000) of any of claims 1 to 9, wherein the second thread (1018) comprises a buttress thread.
  12. The filtration system (1000) of claim 1, wherein the first coupling member (148) defines the seal member channel (160), and wherein the seal member (1052) is disposed in the seal member channel.

Description

TECHNICAL FIELD The present application relates to a filtration system. BACKGROUND Internal combustion engines generally combust a mixture of fuel (e.g., gasoline, diesel, natural gas, etc.) and air. Lubrication oil is also supplied to the engine to lubricate the various moving components of the engine. Either prior to entering the engine or during engine operation, the intake air, fuel, lubrication oil, and other fluids are typically passed through filtration systems to remove contaminants (e.g., dust, water, oil, etc.) from the fluids. The filtration systems include filter elements having filter media. As the fluid passes through the filter media, the filter media removes at least a portion of the contaminants in the fluid. Typical spin-on fluid filters are mounted to the mounting head by the use of an internally-threaded metal nut plate. Such nut plates introduce additional parts into the filter assembly and may increase manufacturing complexity and manufacturing cost of such filters. Whether or not the spin-on filter includes a nut plate, sealing must be provided between the head and the filter to prevent leakage outside the filter to environment and provided between the flow inlet and the flow exit to prevent leakage of unfiltered fluid from the inlet to the filtered fluid outlet. The spin-on fluid filters use facial sealing to seal between the head and the filter, which provides sealing as long as the external gasket is able to keep in place under the pressure applied to the gasket. US20170014738A1 discloses a filtering assembly for filtering at least one fluid circulating in particular in an engine or a hydraulic device. The filtering assembly comprises a filter body, which comprises a vessel and a head. The vessel and the head are provided to engage with one another in order to close the filter body, in particular by screwing. The filtering assembly further comprises a tube, in particular a central tube, which is inside the filter body and extends along a longitudinal axis. Th filtering assembly further comprises a removable filtration cartridge, which is accommodated in the filter body and includes an upper end plate, a lower end plate and a filtration medium which extends between the upper and lower end plates. The filtering medium has a tubular opening for surrounding the tube. The upper end plate comprises first reversible rigid-connection means. The vessel comprises second reversible rigid-connection means which are complementary to the first reversible rigid-connection means. US 5 855 772 A, US 2004/031745 A1, US 2015/101295 A1, FR 2 921 000 A1, US 2016/332098 A1, US 2015/090656 A1 and US 2017/014738 A1 are other relevant prior art documents. SUMMARY Aspects of the present invention are defined by appended independent claim 1. Preferred embodiments of the present invention are defined by the appended dependent claims. These and other features, together with the organization and manner of operation thereof, will become apparent from the following detailed description when taken in conjunction with the accompanying drawings, wherein like elements have like numerals throughout the several drawings described below. BRIEF DESCRIPTION OF THE FIGURES FIG. 1A shows a cross-sectional side view of a filtration system according to an example embodiment.FIG. 1B shows a cross-sectional view of a portion of the radial seal formed in the filtration system of FIG. 1AFIG. 1C shows an exploded cross-sectional view of the filtration system of FIG. 1A.FIG. 2 shows a perspective view of the housing and a seal member of FIG. 1A.FIG. 3A shows a cross-sectional side view of a filtration system according to another example embodiment.FIG. 3B shows a cross-sectional view of a portion of the radial seal formed in the filtration system of FIG. 3A.FIG. 4A shows a cross-sectional side view of a filtration system according to yet another example embodiment.FIG. 4B shows a cross-sectional view of a portion of the radial seal formed in the filtration system of FIG. 4A.FIG. 5 shows a cross-sectional view of a portion of a radial seal formed in a filtration system according to an example embodiment.FIG. 6 shows a cross-sectional view of a portion of a radial seal formed in a filtration system according to yet another example embodiment.FIG. 7 shows a cross-sectional view of a portion of a radial seal formed in a filtration system according to an even further example embodiment.FIG. 8A shows a perspective view of a housing and a seal member according to an example embodiment.FIG. 8B shows a cross-sectional view a radial seal formed in a filtration system that includes the housing of FIG. 8A.FIG. 9A shows a cross-sectional side view of a filtration system according to a further example embodiment.FIG. 9B shows a cross-sectional view of a portion of a radial seal formed in the filtration system of FIG. 9AFIG. 9C shows a perspective view of the housing of the filtration system of FIG. 9A.FIG. 9D shows a top perspective, cross-secti