Contacting vanes
View Patent ↗An assembly can include vanes and a base configured to seat the vanes at a radial distance about an axis where each vane includes a leading edge and a trailing edge, a pair of lateral surfaces that meet at the leading edge and at the trailing edge, an extension that extends from one of the lateral surfaces and that has a contact surface, and a stop surface to form a contact with a contact surface of another vane to define a minimum flow distance between the vane and the other vane. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed.
1. An assembly comprising:
vanes; and
a base configured to seat the vanes at a radial distance about an axis, wherein each vane comprises
a leading edge and a trailing edge;
a pair of lateral surfaces that meet at the leading edge and at the trailing edge;
an extension that extends from one of the lateral surfaces and that comprises a contact surface; and
a stop surface to form a contact with a contact surface of another vane to define a minimum open flow distance between the vane and the other vane.
2. The assembly of claim 1 wherein the extension extends from a lateral surface that comprises a pressure surface of the vane.
3. The assembly of claim 1 wherein the stop surface comprises a portion of a lateral surface that comprises a suction surface of the vane.
4. The assembly of claim 1 wherein the extension extends from a lateral surface that comprises a pressure surface of the vane and wherein the stop surface comprises a portion of a lateral surface that comprises a suction surface of the vane.
5. The assembly of claim 1 wherein the extension extends from a lateral surface that comprises a suction surface of the vane.
6. The assembly of claim 1 wherein the stop surface comprises a portion of a lateral surface that comprises a pressure surface of the vane.
7. The assembly of claim 1 wherein the extension extends from a lateral surface that comprises a suction surface of the vane and wherein the stop surface comprises a portion of a lateral surface that comprises a pressure surface of the vane.
8. The assembly of claim 1 comprising another extension that extends from one of the lateral surfaces.
9. The assembly of claim 8 wherein the other extension comprises the stop surface.
10. The assembly of claim 8 wherein the other extension comprises another contact surface.
11. The assembly of claim 1 wherein each vane comprises a post that defines a pivot axis.
12. The assembly of claim 1 wherein the extension comprises a leading edge and a trailing edge.
13. The assembly of claim 12 wherein at least one of the edges of the extension comprises a beveled edge.
14. The assembly of claim 1 wherein the base comprises a variable geometry turbine base.
15. The assembly of claim 1 wherein the base comprises a variable geometry compressor base.
16. A turbocharger comprising:
a housing that comprises a compressor end and a turbine end; and
a variable geometry turbine assembly at the turbine end of the housing that comprises vanes wherein vane-to-vane contact defines a minimum open flow position for flow of exhaust from a volute to a turbine wheel space wherein each of the vanes comprises
a leading edge and a trailing edge,
a pair of lateral surfaces that meet at the leading edge and at the trailing edge
an extension that defines, at least in part, a minimum open flow distance between adjacent vanes and
a stop surface to form a contact with a contact surface of another vane to define a minimum open flow distance between the vane and the other vane.
17. A method comprising:
providing a variable geometry assembly that comprises vanes wherein each vane comprises
a pivot axis,
a leading edge and a trailing edge,
a pair of lateral surfaces that meet at the leading edge and at the trailing edge,
an extension that extends from one of the lateral surfaces and that comprises a contact surface, and
a stop surface to form a contact with a contact surface of another vane to define a minimum open flow distance between the vane and the other vane;
pivoting the vanes about their respective pivot axes; and
forming contacts between the vanes via the extensions of the vanes to define a minimum open flow position for the assembly.