EP4505042A1 - Pompe de fluide pour turbomachine d'aeronef, circuit de lubrification et turbomachine d'aeronef - Google Patents
Pompe de fluide pour turbomachine d'aeronef, circuit de lubrification et turbomachine d'aeronefInfo
- Publication number
- EP4505042A1 EP4505042A1 EP23715135.2A EP23715135A EP4505042A1 EP 4505042 A1 EP4505042 A1 EP 4505042A1 EP 23715135 A EP23715135 A EP 23715135A EP 4505042 A1 EP4505042 A1 EP 4505042A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- crown
- groove
- space
- fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
- F04C2/3442—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
- F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
- F04C15/0049—Equalization of pressure pulses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/086—Carter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
Definitions
- the present invention relates to a fluid pump for an aircraft turbomachine, a lubrication circuit with such a pump and an aircraft turbomachine with such a lubrication circuit.
- Aircraft turbojet engines have numerous mechanical equipment that must be lubricated or cooled: these include shafts, bearings or gears. For this, these turbojets are equipped with a lubrication circuit allowing oil to be supplied to each of these pieces of equipment. A feed pump generates a flow of oil which is then divided between several lines to supply the various engine equipment.
- this lubrication circuit operates in a closed circuit, the oil delivered to each piece of equipment being recovered then reinjected into the lubrication circuit by recovery pumps.
- Aeronautical pumps being positive displacement pumps, they provide a flow rate.
- the outlet pressure is the result of the pressure losses of the downstream circuit and the imposed flow rate.
- pressure pulsations return to flow pulsations. If the delivered flow rate is not constant, then there will also be variations (or pulsations) in pressure at the outlet of the lubrication group. These pulsations may in particular be due to the compressibility of the fluid.
- Pulsations are harmful in several respects, in particular the resistance of the casing of the lubrication group and the resistance of the oil circuit equipment downstream of the lubrication group (such as filters, valves, exchangers, pipes, etc.).
- the disadvantage of current lubrication groups is that they are subject to premature breakage (pulsation fatigue) of one or more equipment in the groups. To avoid such breakage, some current lubrication units have oversized equipment - which leads to an overall increase in engine mass.
- the invention proposes a fluid pump for an aircraft turbomachine, comprising a crown crossed by a conduit along a central axis, a rotor driven in rotation relative to the crown along a main axis offset relative to the central axis, cavities between the crown and the rotor, the volume of the cavities varying according to the angular position of the rotor relative to the crown, an admission space for the admission of the fluid into the cavities and a discharge space for the discharge of the fluid from the cavities, the pressure in the discharge space being higher than the pressure in the inlet space, a groove bringing the cavities to the pressure of the discharge space during rotation of the rotor.
- the crown is stationary and has a wall, the delivery and inlet spaces being radial and passing through the wall and the groove passes radially through the wall and opens into the delivery space.
- the groove has an elongated shape along a circumference of the wall.
- the groove 15 has a length and a height, the length being greater than 110% of the height.
- the pump further comprises a sealing zone between the fluid inlet space and the fluid discharge space, the groove extending over part of the sealing zone.
- the groove opens into the discharge space, upstream or downstream of the discharge space, in the direction of rotation of the rotor.
- the wall comprises a sealing zone between the fluid intake space and the fluid discharge space, the groove extending over part of the sealing zone.
- the pump comprises a plurality of discharge spaces each with a groove passing radially through the wall of the crown and opening into the respective discharge space, the cumulative height of the grooves in the axial direction of the crown is between 1 and 15% of the height of the crown according to the direction of the central axis.
- the groove(s) are obtained by a milling, electroerosion or wire cutting process.
- the pump comprises movable vanes on the rotor in a radial direction of the rotor, and extending up to the crown, the vanes defining the cavities between them.
- the invention also relates to an aircraft turbomachine lubrication circuit, comprising at least one pump as described above, the groove placing the cavities at the pressure of the delivery space and at the pressure of the circuit downstream of the pump.
- the invention also relates to an aircraft turbomachine, comprising the lubrication circuit as described above.
- FIG. 3 a perspective view of an exemplary embodiment of a crown of the pump of Figure 2;
- FIG. 4 another perspective view of an example of production of a crown of the pump of Figure 2.
- the invention relates to a fluid pump for an aircraft turbomachine, comprising a crown crossed by a conduit along a central axis, a rotor driven in rotation relative to the crown along a main axis offset from the central axis , cavities between the crown and the rotor, the volume of the cavities varying according to the angular position of the rotor relative to the crown, an admission space for the admission of the fluid into the cavities and a discharge space for the discharge of the fluid from the cavities, the pressure in the discharge space being higher than the pressure in the inlet space.
- the pump also includes a groove putting the cavities under the pressure of the delivery space during rotation of the rotor. Such a groove makes it possible to put the pump cavities at the outlet pressure, which makes it possible to reduce, or even cancel, the pressure pulsations at the pump outlet. Ultimately, the lifespan of the pump parts increases.
- FIG. 1 illustrates an aircraft turbomachine lubrication circuit 2.
- Circuit 2 allows the various pieces of equipment of the turbomachine to be cooled and/or lubricated.
- the oil is sent from tank 3 to equipment 4 of the turbomachine, such as bearings or enclosures.
- Circuit 2 includes a lubrication group 5 comprising circulation pumps 1 whose technology may vary. In the present description, these are for example pumps 1 with desmodromic vanes or pumps 1 gerotor.
- the pumps 1 supply oil to the equipment 4 via supply lines 6. Downstream from the equipment 4, recovery lines 7 make it possible to recover the oil and recirculate it in the circuit 2.
- a pump 1 per equipment 4 upstream and downstream of equipment 4 or a pump 1 for several equipment 4 upstream and downstream of equipment 4. According to the embodiment of Figure 1 given by way of example, a pump 1 is provided per equipment 4 upstream and a single pump 1 downstream for all equipment 4.
- FIG. 2 shows a perspective view of an exemplary embodiment of a pump 1 which is a desmodromic vane pump.
- Pump 1 is a positive displacement pump, which imposes a flow rate.
- the pump 1 comprises a crown 10 (or cam for such a pump) with a generally cylindrical external shape of revolution.
- the crown 10 comprises an axial cylindrical conduit 12 passing through the crown 10 along a central axis 101. Crown 10 is stationary.
- the crown 10 is delimited radially by a wall 13.
- the crown 10 also comprises an admission space 16 (or admission port) of fluid and a discharge space 11 (or discharge port) of fluid - in particular of fluid lubrication - the spaces 11 and 16 being radial and passing through the wall 13.
- the pressure in the discharge space 11 is higher than the pressure in the inlet space 16; in other words, the discharge space 11 is at high pressure, to discharge the fluid towards the outlet of the pump, and the admission space 16 is at low pressure to admit the fluid from the inlet of the pump. there pump.
- the crown 10 may comprise one or more inlet spaces 16 and outlet spaces 11, distributed along the main axis 100. Two inlet spaces 16 and two outlet spaces 11 are shown by way of example in the figures ; according to another example, the crown 10 can comprise two admission spaces 16 - coming from different lines - and a discharge space 11 - returning the fluid towards a single line.
- the spaces 11 and 16 extend along a certain angular sector, so as to put different cavities of the conduit 12 in communication with the outside.
- the pump 1 also includes a rotor 20 (or shaft) movable in rotation around a main axis 100 parallel but eccentric with respect to the central axis 101.
- the rotor 20 extends along the main axis 100 and passes longitudinally through the conduit 12 of the ring 10.
- the rotor 20 comprises a drum 21 supporting pallets 30.
- the rotor 20 is supported by pins 22 on either side of the drum 21 along the axis 100.
- the pins 22 are each rotatably mounted on bearings 40.
- the vanes 30 are radial, extending along a radius of the rotor 20, in a plane containing the main axis 100.
- the pallets 30 are inserted into slots 17 of the drum 21, extending radially in the drum 21, in a plane containing the main axis 100.
- the pallets 30 are four in number in Figure 2, and this, as example; the pallets 30 can be more numerous, for example six or eight in number.
- the pallets 30 delimit the cavities of the conduit 12 in communication with the exterior, through the spaces 11 and 16.
- a cavity is delimited between two consecutive pallets, along an angular sector of the conduit 12 centered on the main axis 100.
- a cavity admits the fluid when the cavity faces an admission space 16; a cavity discharges the fluid when the cavity faces a discharge port 1 1.
- the internal surface of the conduit 12 of the crown 10 forms a cam surface 18, which, as the rotor 12 rotates, acts on the vanes 30 - due to the offset between the main axis 100 of rotation of the rotor 20 and the central axis 101 of the conduit 12.
- the cam surface 18 pushes the vane 30 towards the inside of the drum 21, thus maintaining the seal at the end of the pallet 30, between two consecutive cavities.
- the vane 30 is urged outwardly from the drum 21 against the crown surface 18, also maintaining the seal at the end of pallet 30.
- the vanes 30 are urged against the cam surface 18 by various possible means, for example by springs not shown.
- the volume of the cavities varies according to the angular position of the rotor 20 relative to the crown 10.
- the fluid such as oil enters through an inlet space 16 into a cavity inside the conduit 12, delimited by two consecutive pallets 30.
- the rotation of the rotor 20 drives the cavity towards a discharge space 11, increasing the pressure of the fluid due to the reduction in the volume of the cavity.
- FIGS 3 and 4 show a perspective view of an exemplary embodiment of the crown 10 of the pump 1.
- the crown 10 Between two inlet 16 and discharge 11 spaces located on the same circumference of the crown, the crown 10 comprises a sealing zone 19 defined by the wall 13.
- the crown 10 Due to the offset between the axes 100 and 101, the crown 10 comprises a part 23 of thicker wall 13 and a part 22 of thinner wall 13; each of the parts 23 and 22 comprises a sealing zone 19.
- the crown 10 comprises a sealing zone 19 defined by the wall 13.
- the fluid admitted into a cavity facing an admission space 16 cannot leak towards a neighboring cavity along the main axis 100.
- the crown 10 includes a groove 15 visible in the figures putting the cavities under the pressure of the discharge space 1 1 during the rotation of the rotor 20. Such a groove 15 ensures progressive pressurization of the cavity of the conduit 12 before the discharge of the fluid. This makes it possible to avoid premature breakage of one or more pieces of equipment in the oil circuit and also to avoid oversizing the equipment to avoid breakage.
- the reduction in the volume of the cavity during the rotation of the rotor 20 makes it possible to directly discharge the fluid.
- the first moments of reduction of the volume of the cavity serve only to put the fluid under pressure (by compression/reduction of the volume of the cavity). There is therefore a delay during which the cavity does not discharge, which induces variations in flow rate (and therefore pressure pulsations) at the outlet of pump 1.
- the presence of the grooves 15 therefore makes it possible to initiate a discharge and reduce, or even cancel, the pressure pulsations.
- the groove 15 passes radially through the wall 13 and opens into the discharge space 11, along the circumference of the crown 10.
- the groove 15 extends over part of the sealing zone 19 defined in the wall 13 between an admission space 16 and a fluid discharge space 11.
- the presence of the groove 15 in the sealing zone breaks the seal of a fluid cavity, between the inlet and the outlet but allows pressurization of the cavity before its discharge, towards the space of discharge 11.
- the fluid is admitted through an admission space 16 into a cavity between two pallets 30 then the cavity is directed towards a discharge space 11; the groove 15 being in the sealing zone between the inlet spaces 16 and outlet spaces 11, upstream of the outlet space 11, the groove makes it possible to Bring the pump cavity to outlet pressure while limiting leaks and fluid backflow.
- the grooves 15 are at one end 14 of the discharge spaces 11, upstream of the discharge spaces 11. 11 is the end reached first by the cavity of the conduit or during the movement of rotation of the rotor 20. Alternatively or in combination, the grooves 15 can also be at one end of the delivery spaces 11, downstream of the delivery spaces 11.
- the presence of the groove shape opening into the discharge space allows progressive pressure variations in the discharge space.
- the presence of the groove(s) upstream and/or downstream allows a gradual pressure variation of the cavity and reduces the mechanical loads in the components of the lubrication circuit due to sudden pressure variations.
- the dimensions of a groove 15 are sufficiently small to limit leaks (or return flow) while ensuring progressive pressurization of the cavity before discharge. A groove that is too large would lead to unacceptable leaks, whereas a groove that is too small would have no effect on pressurizing the cavity.
- the cumulative height of the grooves 15 is between 1 and 15% of the height of the crown 10.
- the groove 15 has an elongated shape.
- the groove 15 is an orifice of elongated shape.
- the groove 15 has an elongated shape along the circumference of the crown 10 (and the wall 13).
- the groove 15 is a longitudinal notch in the wall 13.
- the groove 15 is a longitudinal notch in the wall 13, along the circumference of the crown 10.
- the groove 15 has a dimension in one direction (circumferential of the crown 10 and the wall 13) larger than one dimension in another direction (along the central axis 101 of the crown 10).
- the groove 15 has a length and a height, the length being greater than 110% of the height.
- the length of the groove 15 is a dimension according to the circumference of the crown 10 (and the wall 13). In other words, the length of the groove 15 is along a direction of the crown 10 of cylindrical shape.
- the height of the groove 15 is a dimension along the central axis 101 of the crown 10. In other words, the height of the groove 15 is according to a generatrix of the crown 10 of cylindrical shape.
- the groove 15 passes through radially the wall 13 and opens at one end of its largest dimension into the discharge space 11, according to the circumference of the crown 10.
- the groove is a long orifice in one direction and narrow in another direction.
- the shape and arrangement of the groove through the wall and in relation to the discharge space 11 ensures progressive pressurization of the cavity before its discharge.
- the shape and arrangement of the groove through the wall and in relation to the discharge space 11 ensures a progressive pressure variation of the cavity after its discharge.
- the grooves 15 are positioned at the end of the sealing zone 19 upstream of the discharge space 11, in the direction of rotation of the rotor 20.
- This sealing zone 19 can, depending on the design of the crown 10, correspond to the thinner part 22 of the wall 13 (as is visible in Figures 3 and 4) but can also be in the thicker part 23 of the wall 13.
- the grooves 15 can also be positioned at the start of zone d seal 19, downstream of the discharge space 11, in the direction of rotation of the rotor 20.
- the grooves 15 can for example be obtained by a milling, electroerosion or wire cutting process, making it possible to control the dimensions of the grooves and obtain appropriate dimensions. A groove that is too large would lead to unacceptable leaks, whereas a groove that is too small would not put pressure on the cavity.
- the elements of the pump 1 such as the rotor 20, the journals 22, the drum 21, the vanes 30 and the crown 10 can be made of steel; the bearings 40 can be made of bronze.
- the invention also relates to the lubrication circuit 2 comprising the pump 1 and an aircraft turbomachine.
- the grooves 15 make it possible to reduce, or even cancel, the pressure pulsations in the lubrication circuit. This has no impact on the interfaces with the pump. This also allows better circulation of the fluid and avoids premature breakage of one or more pieces of equipment in the oil circuit. This offers a longer lifespan to the equipment. We also avoid the oversizing of the equipment and therefore the overall increase in the mass of the turbomachine.
- the present invention has been described in relation to specific embodiments, which have purely illustrative value and should not be considered limiting. Generally speaking, it will appear obvious to a person skilled in the art that the present invention is not limited to the examples illustrated and/or described above.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE20225245A BE1030413B1 (fr) | 2022-04-01 | 2022-04-01 | Pompe de fluide pour turbomachine d'aéronef, circuit de lubrification et turbomachine d'aéronef |
| PCT/EP2023/058140 WO2023186981A1 (fr) | 2022-04-01 | 2023-03-29 | Pompe de fluide pour turbomachine d'aeronef, circuit de lubrification et turbomachine d'aeronef |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4505042A1 true EP4505042A1 (fr) | 2025-02-12 |
| EP4505042B1 EP4505042B1 (fr) | 2026-02-11 |
Family
ID=81306715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23715135.2A Active EP4505042B1 (fr) | 2022-04-01 | 2023-03-29 | Pompe de fluide pour turbomachine d'aeronef, circuit de lubrification et turbomachine d'aeronef |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250198309A1 (fr) |
| EP (1) | EP4505042B1 (fr) |
| CN (1) | CN119137352A (fr) |
| BE (1) | BE1030413B1 (fr) |
| WO (1) | WO2023186981A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1030550B1 (fr) * | 2022-05-23 | 2023-12-18 | Safran Aero Boosters | Accouplement par profils polygonaux de pompes dans un groupe de lubrification |
| BE1032923B1 (fr) * | 2024-09-06 | 2026-04-20 | Safran Aero Boosters | Turbomachine d'aeronef |
| BE1032924B1 (fr) * | 2024-09-06 | 2026-04-20 | Safran Aero Boosters | Turbomachine d'aeronef, procede de fabrication |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1089266A (ja) * | 1996-09-17 | 1998-04-07 | Toyoda Mach Works Ltd | ベーンポンプ |
| US6030191A (en) * | 1997-08-20 | 2000-02-29 | Delaware Capital Formation, Inc. | Low noise rotary vane suction pump having a bleed port |
| JP3943826B2 (ja) * | 2000-11-09 | 2007-07-11 | 株式会社日立製作所 | オイルポンプ |
| JP4087309B2 (ja) * | 2003-07-25 | 2008-05-21 | 株式会社山田製作所 | トロコイド型オイルポンプ |
| JP6152759B2 (ja) * | 2013-09-17 | 2017-06-28 | 株式会社ジェイテクト | オイルポンプ |
| FR3017413B1 (fr) * | 2014-02-07 | 2018-10-26 | Safran Aircraft Engines | Turbomachine equipee d'un groupe de lubrification. |
| US11473575B2 (en) * | 2020-05-15 | 2022-10-18 | Hanon Systems EFP Canada Ltd. | Dual drive vane pump |
-
2022
- 2022-04-01 BE BE20225245A patent/BE1030413B1/fr active IP Right Grant
-
2023
- 2023-03-29 EP EP23715135.2A patent/EP4505042B1/fr active Active
- 2023-03-29 US US18/852,036 patent/US20250198309A1/en active Pending
- 2023-03-29 CN CN202380037801.2A patent/CN119137352A/zh active Pending
- 2023-03-29 WO PCT/EP2023/058140 patent/WO2023186981A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP4505042B1 (fr) | 2026-02-11 |
| BE1030413B1 (fr) | 2023-10-30 |
| BE1030413A1 (fr) | 2023-10-24 |
| WO2023186981A1 (fr) | 2023-10-05 |
| CN119137352A (zh) | 2024-12-13 |
| US20250198309A1 (en) | 2025-06-19 |
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