WO2024074777A1 - Traitement de carter non axisymetrique a ouverture pilotee - Google Patents
Traitement de carter non axisymetrique a ouverture pilotee Download PDFInfo
- Publication number
- WO2024074777A1 WO2024074777A1 PCT/FR2023/051501 FR2023051501W WO2024074777A1 WO 2024074777 A1 WO2024074777 A1 WO 2024074777A1 FR 2023051501 W FR2023051501 W FR 2023051501W WO 2024074777 A1 WO2024074777 A1 WO 2024074777A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- casing
- openings
- movable ring
- slots
- compressor
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/56—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/563—Fluid-guiding means, e.g. diffusers adjustable specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
- F04D29/524—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps shiftable members for obturating part of the flow path
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
- F04D29/526—Details of the casing section radially opposing blade tips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/545—Ducts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
- F04D29/685—Inducing localised fluid recirculation in the stator-rotor interface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/10—Two-dimensional
- F05D2250/18—Two-dimensional patterned
- F05D2250/182—Two-dimensional patterned crenellated, notched
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
- F05D2260/38—Retaining components in desired mutual position by a spring, i.e. spring loaded or biased towards a certain position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/01—Purpose of the control system
- F05D2270/10—Purpose of the control system to cope with, or avoid, compressor flow instabilities
- F05D2270/101—Compressor surge or stall
Definitions
- the present invention relates to the general field of turbomachine compressors, and more particularly to the treatment of the casing of turbomachine compressors.
- Turbomachine compressors are made up of rotating blades inside a casing which seals the air flow with the outside of the engine.
- this play can modify and degrade the operation of the compressor until the appearance of a pumping phenomenon which results from the disconnection of the air flow from the surface of the blades.
- Controlling air circulation at the ends of the blades constitutes a major challenge in obtaining both good aerodynamic efficiency of the compressor and a sufficient margin against the pumping phenomenon.
- the internal surface of the casing can be locally treated by digging cavities arranged in the thickness of the casing facing the blades.
- Documents FR 2 989 742, GB 2 408 546 and US 2016/153465 provide examples of casing treatment.
- the invention relates to a turbomachine compressor casing comprising openings cut into the thickness of the casing from an internal face of the casing and arranged next to each other on a circumference of the casing, characterized in that it comprises also a movable ring, formed by at least two annular portions, present on an external face of the casing facing the openings and capable of moving along the circumference of the casing so as to close and open the openings of the casing to activate or deactivate a casing treatment, the movable ring comprising the same number of slots as openings in the casing.
- the openings present on the casing form the slots of a non-axisymmetric casing treatment, because they are present along the circumference of the casing and open to the vein.
- they form axial slots arranged in an azimuthal direction and are therefore non-axisymmetric with respect to the axis of rotation of the compressor, whereas axisymmetric casing treatments consist of circumferential grooves and are symmetrical with respect to the axis rotation of the compressor.
- the slots of the casing treatment can be opened or closed using the movable ring.
- This makes it possible to have active crankcase treatment when operability conditions require it, for example during takeoff, to avoid the pumping phenomenon and to have inactive crankcase treatment when the compressor is no longer loaded, for example. example at cruising speed, to favor the efficiency of the compressor.
- the invention makes it possible to control the opening of the casing treatment.
- each opening of the casing has a width greater than or equal to the width of the associated slot of the movable ring, and each opening of the casing has a length greater than or equal to the length of the associated slot of the movable ring.
- the casing also comprises at least one spring assembling the movable ring to the casing configured so that the openings of the casing are open when the spring is at rest.
- the spring makes it possible to return the movable ring to an initial position or to a safety position, in which its slots are opposite the openings of the casing, so that the slots of the casing treatment are completely open so that the crankcase treatment is active.
- the casing comprises an electric motor comprising a camshaft, the cam being configured to move the movable ring along the circumference of the casing so as to open or close the openings of the casing.
- the camshaft makes it possible to move the movable ring along the circumference of the casing, and more particularly the cam makes it possible to move the movable ring by an amplitude at least equal to the width of an opening in the casing so as to to completely open or close the openings of the crankcase, and therefore so as to completely open or close the slots of the crankcase treatment.
- the casing comprises an actuator configured to move the movable ring along the circumference of the casing so as to open or close the openings of the casing.
- the actuator can play the same role as the camshaft, and therefore allows the movable ring to be moved along the circumference of the crankcase to be able to close or open the slots in the crankcase treatment.
- it makes it possible to move the movable ring by an amplitude at least equal to the width of an opening in the casing.
- the dimensions of the slots of the movable ring and of the openings of the casing are equal.
- the slots in the movable ring and the openings in the housing have the same length and width. This makes it easier to open and close the slots of the casing treatment, because by moving the movable ring the width of an opening of the casing, the corresponding slot of the casing treatment can be completely opened or closed.
- the number of openings of the casing is between 40 and 850.
- the movable ring and the casing are made of the same material.
- Figure 1 represents, schematically and partially, a turbomachine compressor casing according to one embodiment of the invention.
- Figure 2A represents, schematically and partially, the closed slots of the compressor casing treatment of Figure 1.
- Figure 2B represents, schematically and partially, the open slots of the compressor casing treatment of Figure 1.
- Figure 3 represents, schematically and partially, a turbomachine compressor casing according to another embodiment of the invention.
- Figure 1 represents, schematically and partially, a turbomachine compressor casing 100 according to a first embodiment of the invention.
- the casing 100 comprises openings dug (or cut) in the thickness of the casing from the internal face 1001 of the casing 100.
- the openings are arranged next to each other on the circumference of the casing 100.
- the casing 100 also includes a movable ring 120 present on the external face 1002 of the casing 100.
- the movable ring 120 includes slots with the same number as the openings of the casing 100, and can move along the circumference of the casing 100 by way to open or close the openings of the casing 100 using its own slots. Thanks to the alignment of the slots of the movable ring 120 and the openings of the casing 100, that is to say when the slots of the movable ring 120 are opposite the openings of the casing 100, a treatment of casing whose slots are open when the openings of the casing 100 are open. In other words, the movable ring 120 rotates around the casing 100 so as to close or open the openings of the casing 100.
- Each opening of the casing 100 has a width greater than or equal to the width of the associated slot of the movable ring 120 (or slot facing said opening), and each opening of the casing 100 has a length greater than or equal to the length of the associated slot of the movable ring 120 (or slot facing said opening). This ensures that the openings of the casing 100 are completely open when it is desired to activate the casing treatment.
- the distance between each opening of the casing 100 is greater than or equal to the width of the associated slot of the movable ring 120. This makes it possible to guarantee that the openings of the casing 100 are completely closed when it is desired to deactivate the treatment of carter.
- the movable ring 120 is formed of two annular portions 121 and 122.
- the two annular portions 121 and 122 are assembled together by a pointed screw 130, but they can, instead, be assembled by any other means of assembly, for example a system composed of a centering pin and an assembly of screws and nuts for holding in position.
- the fact of having a movable ring 120 formed of at least two annular portions 121 and 122 makes it possible to facilitate the mounting of the movable ring 120 on the casing 100.
- the casing 100 comprises a piston 140 fixed at one of its ends to the movable ring 120 and another end to the casing 100 via a column 125.
- the piston 140 makes it possible to control the movement of the movable ring 120 along the circumference of the casing 100 to be able to move it by an amplitude at least equal to the width of the openings of the casing 100 to completely close and/or open the openings of the casing 100 and therefore the slots of the casing treatment.
- the column 125 makes it possible to stiffen the casing 100 and to have a fixed point for fixing the piston 140.
- the piston 140 can be replaced by an actuator.
- Figures 2A and 2B represent a sectional view of the openings 201 open (Figure 2B) or closed ( Figure 2A) of the casing 200 of Figure 1 thanks to the movement of the movable ring 220 and its slots 202.
- the openings 201 of the casing 200 are dug (or cut) in the thickness of the casing 200 from its internal face 2001 and are arranged next to each other on the circumference of the casing 200.
- the ring movable 220 comprises the same number of slots 202 as openings 201 of the casing 200 and is placed on the external face 2002 of the casing 200 so as to be able to close or open the openings 201 of the casing 200 by moving along the circumference of the casing 200. casing 200.
- the slots 202 of the movable ring 220 have the same width and length as the openings 201 of the casing 200.
- the distance between the openings 201 of the casing 200 is identical to the distance between the slots 202 of the movable ring 220.
- Figure 3 represents, schematically and partially, a casing 300 of turbomachine compressor 310 according to a second embodiment of the invention.
- the casing 300 comprises openings dug or cut in the thickness of the casing 300 from the internal face 3001 of the casing 300.
- the openings are arranged next to each other along the crankcase circumference 300.
- the casing 300 also includes a movable ring 320 present on the external face 3002 of the casing 300.
- the movable ring 320 includes slots with the same number as the openings of the casing 300, and can move along the circumference of the casing 300 by way to open or close the openings of the casing 300 thanks to its own slots for opening or closing the slots of the casing treatment.
- each opening of the casing 300 has a width greater than or equal to the width of the associated slot of the movable ring 320
- each opening of the casing 300 has a length greater than or equal to the length of the associated slot of the movable ring 320.
- the distance between each opening of the casing 300 is greater than or equal to the width of the associated slot of the movable ring 320.
- the movable ring 320 is formed of two annular portions 321 and 322. As indicated previously, the two annular portions 321 and 322 can be assembled together by a pointed screw or by any other assembly means.
- the casing 300 comprises an electric motor 330 comprising a camshaft 332.
- the cam 332 makes it possible to move the movable ring 320 along the circumference of the casing 300.
- the cam 332 can rest on a projecting portion 326 present on one of the annular portions 322 to be able to pivot and move the movable ring 320.
- the electric motor 330 and the camshaft 332 makes it possible to move the movable ring 320 of at least an amplitude equal to the width of an opening in the casing 300.
- a column 327 may be present in order to block the projecting portion 326 during movement of the movable ring 320.
- the casing 300 may also include a spring 340 fixed to the movable ring 320 and to the casing 300 via a column 325.
- This spring 340 is configured so that when at rest, the openings of the casing 300 are open, c that is to say so that the slots of the movable ring 320 do not block the openings of the casing 300 (case of Figure 2B) so that the casing treatment is active.
- the column 325 also makes it possible to stiffen the casing 300 in addition to forming a fixed point for fixing the spring 340.
- the openings in the casing can all be identical.
- the slots of the movable ring can all be identical.
- the slots of the movable ring and the openings of the casing have the same dimensions, that is to say they have the same length and the same width; and the distance between the openings of the housing is equal to the distance between the associated slots of the movable ring.
- the casing can be in one piece.
- the number of openings of the casing (and therefore of the movable ring) is between 40 and 850, for example between 45 and 810, for example between 60 and 210.
- the treatment The casing requires between 3 and 8 slots per rotor blade and a rotor has between 15 and 90 blades. This range of values therefore makes it possible to cover all possibilities.
- the casing and the movable ring can be made of the same material. This allows both parts to undergo the same thermal and mechanical stresses and therefore to ensure that the opening or closing Closing the crankcase treatment will always be possible, even in the event of thermal expansion.
- the casing and the movable ring can be made of different materials, but it is necessary that these two materials have similar or even identical physical properties so that their thermal expansion is similar.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380071151.3A CN119923526B (zh) | 2022-10-04 | 2023-09-28 | 具有受控开口的非轴对称壳体的处理结构 |
| US19/117,504 US12546336B2 (en) | 2022-10-04 | 2023-09-28 | Treatment of non-axisymmetric casing with controlled opening |
| EP23793425.2A EP4599171A1 (fr) | 2022-10-04 | 2023-09-28 | Traitement de carter non axisymetrique a ouverture pilotee |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2210149A FR3140406A1 (fr) | 2022-10-04 | 2022-10-04 | Traitement de carter non axisymétrique à ouverture pilotée |
| FRFR2210149 | 2022-10-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024074777A1 true WO2024074777A1 (fr) | 2024-04-11 |
Family
ID=84370301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2023/051501 Ceased WO2024074777A1 (fr) | 2022-10-04 | 2023-09-28 | Traitement de carter non axisymetrique a ouverture pilotee |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12546336B2 (fr) |
| EP (1) | EP4599171A1 (fr) |
| CN (1) | CN119923526B (fr) |
| FR (1) | FR3140406A1 (fr) |
| WO (1) | WO2024074777A1 (fr) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030002982A1 (en) * | 2001-06-29 | 2003-01-02 | Kouichi Irie | Axial-flow type hydraulic machine |
| GB2408546A (en) | 2003-11-25 | 2005-06-01 | Rolls Royce Plc | Compressor casing treatment slots |
| US20080044273A1 (en) * | 2006-08-15 | 2008-02-21 | Syed Arif Khalid | Turbomachine with reduced leakage penalties in pressure change and efficiency |
| FR2989742A1 (fr) | 2012-04-19 | 2013-10-25 | Snecma | Carter de compresseur a cavites a forme amont optimisee |
| US20160153465A1 (en) | 2014-12-01 | 2016-06-02 | General Electric Company | Axial compressor endwall treatment for controlling leakage flow therein |
| EP4119802A1 (fr) * | 2021-07-13 | 2023-01-18 | Pratt & Whitney Canada Corp. | Compresseur avec traitement de boîtier (traitement de boîtier modulé) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5694767A (en) * | 1981-11-02 | 1997-12-09 | General Electric Company | Variable slot bypass injector system |
| US7581382B2 (en) * | 2005-04-28 | 2009-09-01 | United Technologies Corporation | Gas turbine engine air valve assembly |
| DE102007037924A1 (de) * | 2007-08-10 | 2009-02-12 | Rolls-Royce Deutschland Ltd & Co Kg | Strömungsarbeitsmaschine mit Ringkanalwandausnehmung |
| US9328735B2 (en) * | 2012-09-28 | 2016-05-03 | United Technologies Corporation | Split ring valve |
| WO2014098276A1 (fr) * | 2012-12-18 | 2014-06-26 | 한국항공우주연구원 | Appareil permettant d'empêcher un compresseur axial de caler au moyen d'un traitement de carter |
| WO2016093811A1 (fr) * | 2014-12-10 | 2016-06-16 | General Electric Company | Traitement de paroi d'extrémité de compresseur ayant un profil incurvé |
| US10047620B2 (en) * | 2014-12-16 | 2018-08-14 | General Electric Company | Circumferentially varying axial compressor endwall treatment for controlling leakage flow therein |
| US20160238012A1 (en) * | 2015-02-18 | 2016-08-18 | Honeywell International Inc. | Adjustable-inlet radial-radial compressor |
| US11346240B2 (en) * | 2019-06-07 | 2022-05-31 | Raytheon Technologies Corporation | Gas turbine engine bleed valve damping guide link |
| US12018621B1 (en) * | 2023-08-16 | 2024-06-25 | Rolls-Royce North American Technologies Inc. | Adjustable depth tip treatment with rotatable ring with pockets for a fan of a gas turbine engine |
| US12085021B1 (en) * | 2023-08-16 | 2024-09-10 | Rolls-Royce North American Technologies Inc. | Adjustable air flow plenum with movable closure for a fan of a gas turbine engine |
| US12078070B1 (en) * | 2023-08-16 | 2024-09-03 | Rolls-Royce North American Technologies Inc. | Adjustable air flow plenum with sliding doors for a fan of a gas turbine engine |
-
2022
- 2022-10-04 FR FR2210149A patent/FR3140406A1/fr active Pending
-
2023
- 2023-09-28 CN CN202380071151.3A patent/CN119923526B/zh active Active
- 2023-09-28 US US19/117,504 patent/US12546336B2/en active Active
- 2023-09-28 EP EP23793425.2A patent/EP4599171A1/fr active Pending
- 2023-09-28 WO PCT/FR2023/051501 patent/WO2024074777A1/fr not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030002982A1 (en) * | 2001-06-29 | 2003-01-02 | Kouichi Irie | Axial-flow type hydraulic machine |
| GB2408546A (en) | 2003-11-25 | 2005-06-01 | Rolls Royce Plc | Compressor casing treatment slots |
| US20080044273A1 (en) * | 2006-08-15 | 2008-02-21 | Syed Arif Khalid | Turbomachine with reduced leakage penalties in pressure change and efficiency |
| FR2989742A1 (fr) | 2012-04-19 | 2013-10-25 | Snecma | Carter de compresseur a cavites a forme amont optimisee |
| US20160153465A1 (en) | 2014-12-01 | 2016-06-02 | General Electric Company | Axial compressor endwall treatment for controlling leakage flow therein |
| EP4119802A1 (fr) * | 2021-07-13 | 2023-01-18 | Pratt & Whitney Canada Corp. | Compresseur avec traitement de boîtier (traitement de boîtier modulé) |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119923526A (zh) | 2025-05-02 |
| EP4599171A1 (fr) | 2025-08-13 |
| US12546336B2 (en) | 2026-02-10 |
| CN119923526B (zh) | 2025-12-09 |
| US20260009403A1 (en) | 2026-01-08 |
| FR3140406A1 (fr) | 2024-04-05 |
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