阅读说明：本技术 密封组件 (Seal assembly ) 是由 罗宾·丹尼尔 丽莎·简·希尔 亨利·大卫·布兰顿·卡尔 乔纳森·威尔逊 李·柯蒂斯 法希姆 于 2020-02-21 设计创作，主要内容包括：本发明提供了一种密封组件(2),该密封组件包括第一部件(8)和与第一部件间隔开的第二部件(10)以限定用于将流体从密封组件的入口(14)转移到密封组件的出口(16)的通道(12),其中,第一部件包括至少部分地限定通道的凹面(18),并且其中,第二部件的任何部分都没有延伸到通道的由凹面界定的部分中。(The present invention provides a seal assembly (2) comprising a first component (8) and a second component (10) spaced from the first component to define a channel (12) for transferring fluid from an inlet (14) to an outlet (16) of the seal assembly, wherein the first component comprises a concave surface (18) at least partially defining the channel, and wherein no portion of the second component extends into a portion of the channel bounded by the concave surface.)

1. A seal assembly, comprising:

a first member and a second member spaced from the first member to define a channel for transferring fluid from an inlet of the seal assembly to an outlet of the seal assembly,

wherein the first part comprises a concave surface at least partially defining the channel, and wherein no portion of the second part extends into the portion of the channel bounded by the concave surface.

2. The seal assembly of claim 1, wherein the first and second components are movable relative to each other.

3. The seal assembly of claim 2, wherein the seal assembly defines a fluid flow direction from the inlet to the outlet, and wherein the first and second members are movable relative to each other generally parallel to the fluid flow direction.

4. The seal assembly of any preceding claim, wherein the recessed surface defines a depth and the first and second members define a gap, and wherein a ratio of the depth of the recessed surface to the gap between the first and second members is at least about 3: 1.

5. The seal assembly of any preceding claim, wherein the concave surface defines an elongate recess.

6. The seal assembly of any preceding claim, wherein the concave surface defines a generally semi-circular cross-section.

7. The seal assembly of any preceding claim, wherein the concave surface defines an asymmetric cross-section.

8. The seal assembly of any preceding claim, wherein the concave surface smoothly transitions between a minimum depth and a maximum depth.

9. The seal assembly of any preceding claim, wherein:

the concave surface defines a depth;

the first and second components defining a minimum gap therebetween; and

the ratio of the depth of the concavity to the minimum gap between the first and second features is in the range of about 2.5: 1 to about 3.75: 1.

10. The seal assembly of any preceding claim, wherein:

the channel defines a length; and

the ratio of the length of the channel to the depth of the concavity is at least about 20: 1.

11. The seal assembly of any preceding claim, wherein the recessed surface defines a surface roughness in a range of about 10 μ ι η to about 50 μ ι η.

12. The seal assembly of any preceding claim, wherein the first component comprises a plurality of concave surfaces at least partially defining the channel.

13. The seal assembly of claim 12, wherein the first member includes at least five concave surfaces.

14. The seal assembly of claim 12 or 13, wherein the recessed surfaces are disposed in series between an inlet of the seal assembly and an outlet of the seal assembly.

15. The seal assembly of any one of claims 12 to 14, wherein each concave surface defines a width in a direction from the inlet to the outlet, and wherein the widths of the concave surfaces are substantially equal.

16. The seal assembly of claim 15, wherein each concave surface defines a center, and wherein the centers of the concave surfaces are spaced apart from each other by at least about twice the width of the concave surfaces.

17. The seal assembly of any one of claims 12 to 16, wherein the plurality of recessed surfaces comprises a plurality of dimples.

18. The seal assembly of any one of claims 12 to 17, wherein each of the plurality of concave surfaces defines a depth, and wherein the depths of two or more adjacent concave surfaces are different.

19. The seal assembly of any preceding claim, wherein the second member comprises a concave surface at least partially defining the channel, and wherein no portion of the first member extends into a portion of the channel bounded by the concave surface of the second member.

20. The seal assembly of claim 19, wherein the concave surface of the first member defines a first depth, and wherein the concave surface of the second member defines a second depth, and wherein the first depth is different than the second depth.

21. The seal assembly of any preceding claim, wherein the second component comprises a plurality of concave surfaces at least partially defining the channel.

22. A valve, comprising:

a housing defining a valve chamber defining a longitudinal axis, an inlet adjacent the valve chamber, a primary outlet adjacent the valve chamber, and

a valve member disposed within the valve chamber and supported for rotation about a longitudinal axis of the valve chamber, the valve member and the housing defining a clearance gap therebetween; and

the seal assembly of any preceding claim, wherein:

the housing includes one of a first component of a seal assembly and a second component of the seal assembly,

the valve member comprises the other of the first part of the seal assembly and the second part of the seal assembly, an

The gap includes a passage of the seal assembly.

23. The valve of claim 22, further comprising a secondary outlet adjacent the valve chamber.

24. The valve of claim 23, wherein the valve member comprises:

a first end wall at a first longitudinal end of the valve member,

a second end wall at a second longitudinal end of the valve member opposite the first end of the valve member, and

a web extending between the first end wall and the second end wall.

25. The valve of claim 24, wherein the first end wall is received by a first end cap having a first longitudinally extending shaft, and wherein the second end wall is received by a second end cap having a second longitudinally extending shaft, the shaft aligned with the longitudinal axis of the housing and configured to support the valve member for rotation within the valve cavity.

26. The valve of claim 25, wherein the web comprises a first component, and wherein the concave surface of the first component is defined by an outer surface of the web.

27. The valve of any of claims 22 to 25, wherein the housing comprises a sleeve, and wherein the sleeve comprises the first component.

28. The valve of claim 27, wherein the valve member includes an inner housing between the housing and the sleeve, the inner housing and the valve member at least partially forming a pocket received by the housing.

29. The valve of any one of claims 22 to 28, wherein the inlet, the primary outlet and the secondary outlet define a plane, and wherein the longitudinal axis extends transverse to the plane.

30. A valve according to any one of claims 22 to 29, wherein the valve is a rotary turbine control valve for a turbine.

31. A turbine system, comprising:

a turbine having a turbine housing and a turbine wheel;

a bypass channel; and

a valve according to any one of claims 22 to 30;

wherein the primary outlet of the valve is in fluid communication with the inlet of the turbine housing, the secondary outlet of the valve is in fluid communication with the bypass passage, and wherein the bypass passage is also in fluid communication with the outlet of the turbine housing.

32. A turbine comprising a valve according to any one of claims 22 to 30, wherein the turbine comprises a turbine housing, and wherein the turbine housing defines a housing of the valve.

33. An impeller assembly for a turbocharger, the impeller assembly comprising:

a housing defining a volute;

an impeller located within the housing and supported for rotation relative to the housing, an

The seal assembly of any one of claims 1 to 21, wherein:

the housing comprises one of a first part of the seal assembly and a second part of the seal assembly, an

The compressor wheel includes the other of the first component of the seal assembly and the second component of the seal assembly.

34. The impeller assembly of claim 33 wherein the impeller defines a back face positioned opposite a portion of the housing to define a leakage passage therebetween, and wherein:

the back side includes one of a first component of the seal assembly and a second component of the seal assembly; and

a portion of the housing includes the other of the first component of the seal assembly and the second component of the seal assembly.

35. An impeller assembly according to claim 33 or 34 wherein the housing is a bearing housing.

36. The impeller assembly of claim 33 wherein the impeller includes a plurality of curved impeller blades and the housing includes a curved profile that conforms to the curve of the impeller blades, and wherein the curved profile of the housing includes the first component of the seal assembly.

37. The impeller assembly of claim 33 wherein the impeller includes a plurality of impeller blades defining a tip, and wherein the tip comprises the first component of the seal assembly.

38. The impeller assembly of claim 37 wherein the radially outer ends of the impeller blade tips include winglets.

39. An impeller assembly according to any one of claims 33 to 38 wherein the impeller assembly is a compressor assembly.

40. An impeller assembly according to any one of claims 33 to 38 wherein the impeller assembly is a turbine assembly.

41. A shaft assembly, comprising:

a housing defining a bore having a first diameter;

a shaft received within the bore, the shaft defining a second diameter narrower than the first diameter so as to define a gap between the housing and the bore; and

the seal assembly of any one of claims 1 to 21, wherein:

the housing comprises one of a first part of the seal assembly and a second part of the seal assembly, an

The shaft includes the other of the first component of the seal assembly and the second component of the seal assembly.

42. The shaft assembly defined in claim 41, wherein the concave surface of the first component comprises a circumferentially extending groove.

43. A turbocharger comprising a shaft assembly according to claim 41 or 42, wherein the housing is a bearing housing and the shaft is a turbocharger shaft.

44. A turbine comprising a shaft assembly according to claim 41 or 42, wherein the housing is a turbine housing or liner and the shaft is an exhaust valve shaft.

45. A variable geometry turbine comprising:

a housing at least partially defining an annular inlet passage;

a turbine wheel positioned within the housing and supported for rotation relative to the turbine housing;

a nozzle ring comprising a plurality of nozzle vanes;

a shroud comprising a plurality of apertures configured to receive the nozzle vanes, wherein the nozzle ring and the shroud are configured for relative movement therebetween; and

the seal assembly of any one of claims 1 to 21, wherein:

the nozzle ring comprises one of a first part of a seal assembly and a second part of the seal assembly, an

The housing includes the other of the first component of the seal assembly and the second component of the seal assembly.

46. A variable geometry turbine comprising:

a housing at least partially defining an annular inlet passage;

a turbine wheel positioned within the housing and supported for rotation relative to the turbine housing;

a nozzle ring comprising a plurality of nozzle vanes;

a shroud comprising a plurality of apertures configured to receive the nozzle vanes, wherein the nozzle ring and the shroud are configured for relative movement therebetween; and

the seal assembly of any one of claims 1 to 21, wherein:

the nozzle ring comprises one of a first part of a seal assembly and a second part of the seal assembly, an

The shroud includes the other of the first component of the seal assembly and the second component of the seal assembly.

47. A variable geometry turbine comprising:

a housing at least partially defining an annular inlet passage;

a turbine wheel positioned within the housing and supported for rotation relative to the turbine housing;

a nozzle ring comprising a plurality of nozzle vanes;

a shroud comprising a plurality of apertures configured to receive the nozzle vanes, wherein the nozzle ring and the shroud are configured for relative movement therebetween; and

the seal assembly of any one of claims 1 to 21, wherein:

the housing comprises one of a first part of the seal assembly and a second part of the seal assembly, an

The shroud includes the other of the first component of the seal assembly and the second component of the seal assembly.

48. A method of forming a seal assembly comprising:

providing a first part having a concave surface,

a second component is provided which is adapted to,

spacing the first and second components to define a channel therebetween, an

The first component is oriented such that the concave surface at least partially defines the channel.

49. The method of claim 48, further comprising:

the first member and the second member are supported so as to be relatively movable.