Fuel injectors for turbomachinery

The fuel injector design with arc-shaped walls and integrated injection members optimizes additive manufacturing, enhancing production efficiency and reducing costs while improving gas turbine performance.

JP7888254B2Active Publication Date: 2026-07-13GENERAL ELECTRIC TECH GMBH
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Patent Information

Application Number
JP2021152893
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2020-09-25
Filing Date
2021-09-21
Publication Date
2026-07-13
Estimated Expiration
2041-09-21

AI Technical Summary

Technical Problem

Existing fuel injectors for axial fuel staging systems in gas turbines are costly to produce using additive manufacturing due to limited build plate sizes and the need for numerous temporary support structures, which increase production time and costs.

Method used

The design of a fuel injector with arc-shaped end walls and a side wall that defines a stadium-shaped opening, integrated with fuel injection members, optimized for additive manufacturing, allowing for increased production efficiency and reduced support structures.

Benefits of technology

This design maximizes the workable area on the build plate, enabling faster production of multiple fuel injectors with fewer defects and lower costs, improving the operating efficiency and emissions performance of gas turbines.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide fuel injectors, combustors, and methods of fabricating a fuel injector.SOLUTION: A fuel injector 200 includes a forward end wall 206 and an aft end wall 208 disposed oppositely from one another. The fuel injector 200 also includes side walls 204 that extend between the forward end wall 206 and the aft end wall 208. The forward end wall 206 and the aft end wall 208 are arcuate. The forward end wall 206, the aft end wall 208 and the side walls 204 collectively define an opening 210 for passage of air. The fuel injector 200 further includes at least one fuel injection member 212 disposed within the opening 210 and extending between the forward end wall 206 and the aft end wall 208.SELECTED DRAWING: Figure 3
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Citation Information

Patent Citations

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    JP2017110902A

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    JP2018119779A

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    JP2019023551A

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    JP2019082313A