Granted Patent B2

US 12,313,003 · App. 18/716,550 · Granted May 27, 2025

Inventors: Sébastien Christophe Loval (Moissy-Cramayel, FR); Pierre Jean-Baptiste Metge (Moissy-Cramayel, FR); Alexandre Corsaut (Moissy-Cramayel, FR); Kevin Auber (Moissy-Cramayel, FR); Marc Serrau (Moissy-Cramayel, FR); Sébastien Jahin (Moissy-Cramayel, FR)

Assignee: SAFRAN AIRCRAFT ENGINES

F02C7/222

Abstract

Claims (24)

1. A fuel distribution assembly ( 11 ) for a turbomachine, the distribution assembly ( 11 ) extending between a first interface plane (P 1 ) and a second interface plane (P 2 ) substantially parallel to the first interface plane (P 1 ), the distribution assembly ( 11 ) comprising a plurality of distribution ducts ( 13 ), each duct ( 13 ) comprising:

at least one inlet portion ( 15 ) that is open to the first interface plane (P 1 ) or to the second interface plane (P 2 ),

at least one outlet portion ( 19 ) that is open to the first interface plane (P 1 ) or to the second interface plane (P 2 ), and

a middle portion ( 17 ) fluidly connecting each inlet portion ( 15 ) of the duct ( 13 ) and each outlet portion ( 19 ) of the duct ( 13 ),

characterized in that the middle portion ( 17 ) of each duct ( 13 ) has an internal cross-section(S) of substantially elliptical shape,

wherein the distribution assembly ( 11 ) comprises a support plate ( 23 ) interconnecting the middle portions ( 17 ) of the ducts ( 13 ), the support plate ( 23 ) extending along a midplane (P) substantially parallel to the first interface plane (P 1 ) and to the second interface plane (P 2 ).

2. The distribution assembly ( 11 ) according to claim 1 , wherein the midplane (P) is equidistant from the first interface plane (P 1 ) and the second interface plane (P 2 ).

3. The distribution assembly ( 11 ) according to claim 1 , wherein the support plate ( 23 ) has a thickness (E), measured perpendicularly to the midplane (P), of between 1 mm and 2 mm.

4. The distribution assembly ( 11 ) according to claim 1 , wherein the distribution assembly ( 11 ) comprises at least one stiffening rib ( 27 ) extending on the support plate ( 23 ), projecting from the support plate ( 23 ) in a direction perpendicular to the midplane (P).

5. The distribution assembly ( 11 ) according to claim 1 , wherein the distribution assembly ( 11 ) comprises at least one embedding portion ( 25 ) which extends as a projection from the support plate ( 23 ) to the first interface plane (P 1 ), each embedding portion ( 25 ) comprising at least one peripheral surface ( 33 ) forming a clearance angle (α) with the first interface plane (P 1 ), in a section plane perpendicular to said first interface plane (P 1 ), the clearance angle (α) being between 30° and 60°.

6. The distribution assembly ( 11 ) according to claim 1 , wherein the inlet portion ( 15 ) and/or the outlet portion ( 17 ) of each duct has an internal cross-section (S 0 ) in the shape of a teardrop.

7. The distribution assembly ( 11 ) according to claim 1 , wherein the plurality of ducts ( 13 ) comprises between eight and twelve ducts.

8. A method for manufacturing a distribution assembly ( 11 ) according to claim 1 , wherein the distribution assembly ( 11 ) is manufactured as one piece by an additive manufacturing process using laser powder bed fusion.

9. The distribution assembly ( 11 ) according to claim 2 , wherein the support plate ( 23 ) has a thickness (E), measured perpendicularly to the midplane (P), of between 1 mm and 2 mm.

10. The distribution assembly ( 11 ) according to claim 2 , wherein the distribution assembly ( 11 ) comprises at least one stiffening rib ( 27 ) extending on the support plate ( 23 ), projecting from the support plate ( 23 ) in a direction perpendicular to the midplane (P).

11. The distribution assembly ( 11 ) according to claim 2 , wherein the distribution assembly ( 11 ) comprises at least one embedding portion ( 25 ) which extends as a projection from the support plate ( 23 ) to the first interface plane (P 1 ), each embedding portion ( 25 ) comprising at least one peripheral surface ( 33 ) forming a clearance angle (α) with the first interface plane (P 1 ), in a section plane perpendicular to said first interface plane (P 1 ), the clearance angle (α) being between 30° and 60°.

12. The distribution assembly ( 11 ) according to claim 2 , wherein the inlet portion ( 15 ) and/or the outlet portion ( 17 ) of each duct has an internal cross-section (S 0 ) in the shape of a teardrop.

13. The distribution assembly ( 11 ) according to claim 2 , wherein the plurality of ducts ( 13 ) comprises between eight and twelve ducts.

14. A method for manufacturing a distribution assembly ( 11 ) according to claim 2 , wherein the distribution assembly ( 11 ) is manufactured as one piece by an additive manufacturing process using laser powder bed fusion.

15. A method for manufacturing a distribution assembly ( 11 ) according to claim 3 , wherein the distribution assembly ( 11 ) is manufactured as one piece by an additive manufacturing process using laser powder bed fusion.

16. A method for manufacturing a distribution assembly ( 11 ) according to claim 4 , wherein the distribution assembly ( 11 ) is manufactured as one piece by an additive manufacturing process using laser powder bed fusion.

17. A method for manufacturing a distribution assembly ( 11 ) according to claim 5 , wherein the distribution assembly ( 11 ) is manufactured as one piece by an additive manufacturing process using laser powder bed fusion.

18. A method for manufacturing a distribution assembly ( 11 ) according to claim 6 , wherein the distribution assembly ( 11 ) is manufactured as one piece by an additive manufacturing process using laser powder bed fusion.

19. A method for manufacturing a distribution assembly ( 11 ) according to claim 7 , wherein the distribution assembly ( 11 ) is manufactured as one piece by an additive manufacturing process using laser powder bed fusion.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (9)