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US 11,536,171 B2Granted
Filter and removable cartridge including a bypass valve
AssigneeSogefi Filtration
InventorLaurent Fayolle
Life of this patent
Estimating the term…
Abstract
The filter for the purification of a liquid of a combustion engine, particularly lubricating oil, includes a housing that has, in a bottom part, an inlet for raw liquid and an outlet for purified liquid, and an unscrewable lid. A cartridge, defined by a filtering insert and a preassembled bypass valve, is received in the housing. The insert has a flange for fixing the valve, covering an end of the filtering medium. The bypass valve can be separated from the cover such that the cartridge can be removed. The valve has a removable connection element that axially engages with a complementary securing component formed on the flange, in a locking configuration obtained by a pivoting action.
Claims16
A filter for purifying lubricating oil for an internal combustion engine, comprising:
- a housing having an inlet for unprocessed liquid and an outlet for purified liquid, the housing defining an interior volume and comprising a cover that is detachable from a remainder of the housing;
- a filter insert having a first end and a second end, the filter insert extending longitudinally between the first end, which is distal relative to the outlet, and the second end, which is proximal relative to the outlet, the filter insert being removably received within the interior volume by engaging in a bottom portion of the housing and comprising:
- a filter medium of annular shape which extends around a central axis defining a longitudinal axis of the filter insert, and
- a flange, located towards the first end, for covering one axial end of the filter medium;
- and
- a bypass valve forming a preassembled unit and secured to the filter insert, the bypass valve being interposed, within the interior volume towards the first end of the filter insert, between a region upstream of the filter medium that is in communication with the inlet and a region downstream of the filter medium that is in communication with the outlet, the bypass valve being integrally secured to the cover,
- wherein the bypass valve:
- is detachable from the cover so that an assembly formed by the filter insert and the bypass valve defines a removable cartridge,
- forms a preassembled unit, and has a removable connection member which:
- in a locking configuration, is axially engaged with complementary securing elements formed on the first end of the filter insert, the complementary securing elements being formed on the flange to which the bypass valve is directly attached, and
- allows subsequent disassembly of the bypass valve from the filter insert;
- wherein the bypass valve is configured to be integrally secured on the first end of the filter insert by a first bayonet connection system that reversibly locks the bypass valve to the first end of the filter insert by way of a locking action which is carried out by pivoting the bypass valve and the filter insert relative to one another about the central axis, only one pivoting direction allowing the locking action performed by the first bayonet connection system;
- wherein the bypass valve and the first end of the filter insert are immobilized relative to one another by the first bayonet connection system in the locking configuration;
- wherein the complementary securing elements comprise two coupling members formed on the flange, projecting from a side of the flange opposite to the filter medium;
- wherein the cover is engaged with an axially protruding part of the bypass valve, which:
- protrudes axially toward the cover, beyond the two coupling members, and
- comparatively with the two coupling members, is arranged closer to the central axis;
- wherein a second bayonet connection system directly connects a piece of the bypass valve, including the removable connection member, to rigid mounting lugs of the cover, so that said piece of the bypass valve is distributed in the first bayonet connection system and in the second bayonet connection system;
- and
- wherein, below the rigid mounting lugs, the cover rests against an upper end of the bypass valve.
17 more elements
A filter for purifying lubricating oil for an internal combustion engine, comprising:
- a housing having an inlet for unprocessed liquid and an outlet for purified liquid, the housing defining an interior volume and comprising a cover that is detachable from a remainder of the housing;
- a filter insert having a first end and a second end, the filter insert extending longitudinally between the first end, which is distal relative to the outlet, and the second end, which is proximal relative to the outlet, the filter insert being removably received within the interior volume by engaging in a bottom portion of the housing and comprising:
- a filter medium of annular shape which extends around a central axis defining a longitudinal axis of the filter insert, and
- a flange, located towards the first end, for covering one axial end of the filter medium;
- and
- a bypass valve forming a preassembled unit and secured to the filter insert, the bypass valve being interposed, within the interior volume towards the first end of the filter insert, between a region upstream of the filter medium that is in communication with the inlet and a region downstream of the filter medium that is in communication with the outlet, the bypass valve being integrally secured to the cover,
- wherein the bypass valve:
- is detachable from the cover so that an assembly formed by the filter insert and the bypass valve defines a removable cartridge,
- forms a preassembled unit, and has a removable connection member which:
- in a locking configuration, is axially engaged with complementary securing elements formed on the first end of the filter insert, the complementary securing elements being formed on the flange to which the bypass valve is directly attached, and
- allows subsequent disassembly of the bypass valve from the filter insert;
- wherein the bypass valve is configured to be integrally secured on the first end of the filter insert by a first bayonet connection system that reversibly locks the bypass valve to the first end of the filter insert by way of a locking action which is carried out by pivoting the bypass valve and the filter insert relative to one another about the central axis, only one pivoting direction allowing the locking action performed by the first bayonet connection system;
- wherein the bypass valve and the first end of the filter insert are immobilized relative to one another by the first bayonet connection system in the locking configuration;
- wherein the complementary securing elements comprise two coupling members formed on the flange, projecting from a side of the flange opposite to the filter medium;
- wherein the cover is engaged with an axially protruding part of the bypass valve, which:
- protrudes axially toward the cover, beyond the two coupling members, and
- comparatively with the two coupling members, is arranged closer to the central axis;
- wherein a second bayonet connection system directly connects a piece of the bypass valve, including the removable connection member, to rigid mounting lugs of the cover, so that said piece of the bypass valve is distributed in the first bayonet connection system and in the second bayonet connection system,
- wherein an annular projection is formed in the flange, the annular projection protruding toward a collar of the removable connection member,
- wherein the two coupling members, which are formed on the flange to which the bypass valve is directly attached, axially protrude from the annular projection, and
- wherein the two coupling members each have a branched structure with two radial arms each radially connected to a common narrow portion axially extending from the annular projection, the two radial arms comprising a radial arm, longer than the common narrow portion, that is located further away axially from the filter medium than said removable connection member.
18 more elements
A filter for purifying lubricating oil for an internal combustion engine, comprising:
- a housing having an inlet for unprocessed liquid and an outlet for purified liquid, the housing defining an interior volume and comprising a cover that is detachable from a remainder of the housing;
- a filter insert having a first end and a second end, the filter insert extending longitudinally between the first end, which is distal relative to the outlet, and the second end, which is proximal relative to the outlet, the filter insert being removably received within the interior volume by engaging in a bottom portion of the housing and comprising:
- a filter medium of annular shape which extends around a central axis defining a longitudinal axis of the filter insert, and
- a flange, located towards the first end, for covering one axial end of the filter medium;
- and
- a bypass valve forming a preassembled unit and secured to the filter insert, the bypass valve being interposed, within the interior volume towards the first end of the filter insert, between a region upstream of the filter medium that is in communication with the inlet and a region downstream of the filter medium that is in communication with the outlet, the bypass valve being integrally secured to the cover,
- wherein the bypass valve:
- is detachable from the cover so that an assembly formed by the filter insert and the bypass valve defines a removable cartridge,
- forms a preassembled unit, and
- has a removable connection member which:
- in a locking configuration, is axially engaged with complementary securing elements formed on the first end of the filter insert, the complementary securing elements being formed on the flange to which the bypass valve is directly attached, and
- allows subsequent disassembly of the bypass valve from the filter insert;
- wherein the bypass valve is configured to be integrally secured on the first end of the filter insert by a first bayonet connection system that reversibly locks the bypass valve to the first end of the filter insert by way of a locking action which is carried out by pivoting the bypass valve and the filter insert relative to one another about the central axis, only one pivoting direction allowing the locking action performed by the first bayonet connection system;
- wherein the bypass valve and the first end of the filter insert are immobilized relative to one another by the first bayonet connection system in the locking configuration;
- wherein the complementary securing elements comprise two coupling members formed on the flange, projecting from a side of the flange opposite to the filter medium;
- wherein the cover is engaged with an axially protruding part of the bypass valve, which:
- protrudes axially toward the cover, beyond the two coupling members, and
- comparatively with the two coupling members, is arranged closer to the central axis;
- wherein a second bayonet connection system directly connects a piece of the bypass valve, including the removable connection member, to rigid mounting lugs of the cover, so that said piece of the bypass valve is distributed in the first bayonet connection system and in the second bayonet connection system;
- and
- wherein the two coupling members are each provided with two groove portions, the two groove portions having a different orientation and being upwardly delimited, respectively, by two radial arms with a 90° orientation between each other.
18 more elements
Dependencies are inferred from the claim text.