当前申请(专利权)人地址：
Incorporated in USA - Delaware, 811 4th Street, West Des Moines, Iowa 50265, United States of America
摘要：
A strainer body (100) of conical or bullet-like shape comprises a tip portion (102), a base portion opposite the tip portion (106), and a midsection (104) connecting the base portion to the tip portion. A plurality of inter-fused layers (108, 110) define a plurality of flow passages (112, 114) that extend laterally from a straining axis (A). Preferably the plurality of interfused layers are formed by an additive manufacturing technique and define an inclined surface (122) forming an overhang angle. The flow passages may define flow areas with various shapes such as triangular, rectangular and elliptical (Fig 2A-E). When axially stacked along the straining axis, first and second strainer bodies together may form a strainer element. The strainer body may form part of a fuel injector for a gas turbine engine and prevents particulates in fuel from reaching a fuel injector nozzle body.
权利要求：
Claims:
t A strainer body, comprising:
3 tip portion;
a base portion opposite the tip portion; and
a midsection connecting the base portion to the tip portion,
wherein the strainer body has a conical or bullet-like shape defining a straining axis, the strainer body including a plurality of interfused layers extending laterally from the straining axis and defining a plurality of flow passages through the strainer body to impound particulate entrained in fluid traversing the strainer body through the plurality of flow passages.
2. A strainer body as recited in claim 1, wherein at [east one of the base portion and the midsection of the strainer body define an overhang angle that is greater than about 45-degrees.
3. A strainer body as recited in claim 1, wherein the interfused layers are angled at about a 90-degree angle relative to the straining axis.
4. A strainer body as recited in claim 1, wherein at least one of the flow passages defines a non-circular flow area.
3. A strainer body as recited in claim 1, wherein at least one of the flow passages defines a flow area with a polygonal shape.
&. A strainer body as recited in claim 1, wherein at least one of the flow passages defines a flow area with an elliptical shape.
7. A strainer body as recited in claim 6, wherein a major of axis of the elliptically shaped flow area extends in the direction of the straining axis.
8. A strainer body as recited in claim 1, wherein at least one of the plurality of flow passages defines a flow area that tapers along an axis of the flow passage.
9. A strainer body as recited in claim 1, wherein at least one of the plurality of flow passages is bounded by a planar sidewall defined within a wall of the strainer body,
10. A strainer element, comprising:
first and second strainer bodies as recited in claim 1,
wherein the second strainer body is axially stacked with the first strainer body along the straining axis of the first strainer body.
11. A strainer element as recited in claim 10, wherein a tip of the second strainer body is disposed within an interior of the first strainer body.
12. A strainer element as recited in claim 10, wherein each of the flow passages of the first strainer body has a flow area that is greater than each flow area of the flow passage of the second strainer body.
13. A strainer element as recited in claim 10, wherein each of the flow passages of the second strainer body has a flow area that is greater than each flow area of the flow passages of the first strainer body.
14. A strainer, comprising:
a housing with a flow channel; and
a strainer body as recited in claim 1, wherein the strainer body is sealably seated within the flow channel such that fluid traversing flow channel flows through the flow passages of the strainer body.
15. A strainer as recited in claim 14, further including a collar seated within the flow channel and fixing the strainer body within the flow channel.
16. A strainer as recited in claim 14, wherein the plurality of interfused layers extend into the housing and sealably fix the strainer body within the flow channel.
17. A strainer as recited in claim 14, wherein a tip of the sirainer faces a channel inlet of the flow channel.
18. A strainer as recited in claim 14, wherein a tip of the strainer faces a channel outlet of the flow channel.
18. A strainer, comprising:
a housing with a flow channel, wherein the flow channel extends between a channel inlet and a channel outlet; and
a strainer element as recited in claim 10,
wherein the second strainer body is axially stacked with the first strainer body along the straining axis of the first strainer body, the straining axis extending between the channel inlet and the channel outlet,
wherein a tip of the first strainer body faces the channel inlet of the flow channel,
wherein a tip of the second strainer body is disposed within an interior of the first strainer body,
wherein each of the flow passages of the first strainer body has a flow area that is greater than each flow area of the flow passage of the second strainer body, and.
wherein the plurality of interfused layers of the first strainer body and the second strainer body extend into the housing and sealably fix the strainer bodies within the flow channel.
20. A fuel injector for a gas turbine engine, comprising:
a nozzle body with a fuel circuit;
a support with a fuel conduit with the fuel circuit of the nozzle body; and
a strainer body as recited in claim I, wherein the plurality of the flow passages of the strainer body are in fluid communication with fuel circuit of the nozzle body through the fuel conduit of the support.