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 Title: |
US4265615:
Fuel injection system for low emission burners
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Lohmann, Robert P.; South Windsor, CT
Markowski, Stanley J.; East Hartford, CT
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| Assignee: |
United Technologies Corporation, Hartford, CT
other patents from UNITED TECHNOLOGIES CORPORATION (597550) (approx. 5,761)
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| Published / Filed: |
1981-05-05
/ 1978-12-11
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| Application Number: |
US1978000968652
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| IPC Code: |
Advanced:
F23C 6/04;
F23R 3/34;
Core:
F23C 6/00;
more...
IPC-7:
F23D 15/02;
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| ECLA Code: |
F23C6/04B1; F23R3/34D;
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| U.S. Class: |
Current:
431/353;
060/746;
060/748;
431/158;
431/284;
Original:
431/353;
431/158;
431/284;
060/746;
060/748;
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| Field of Search: |
431/352,353,284,158
060/39.74 B,39.65,39.69
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| Priority Number: |
| 1978-12-11 |
US1978000968652 |
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| Abstract: |
A fuel injection system for low emission burners in which the primary fuel is delivered in an annular spray into the primary combustion zone; at high power operation, secondary fuel is injected additionally in a low angle axial spray to penetrate beyond the primary zone and into the secondary combustion zone downstream of the primary zone.
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| Attorney, Agent or Firm: |
Warren, Charles A. ;
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| Primary / Asst. Examiners: |
Moy, Joseph Man-Fu;
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| Family: |
None
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First Claim:
Show all 10 claims |
Having thus described a typical embodiment of our invention, that which we claim as new and desire to secure by Letters Patent of the United States is:
1. A burner construction including:
- an inlet end cap having at least one central opening therein;
- side walls extending downstream from the end cap and having openings therein, said walls converging in a downstream direction to form a throat spaced from the end cap, and diverging again downstream of the throat;
- an annular nozzle in the opening in the end cap for directing fuel at a large angle relative to the axis of the burner to cause primary combustion in an annulus closely adjacent to the end cap; and
- a second nozzle within the annulus of the first nozzle directing fuel at a small angle and substantially parallel to the axis of the burner through the primary combustion, this small angle and the spacing of the throat from the end cap being such that substantially all the fuel from this nozzle passes through the throat without impingement on the converging walls for secondary combustion downstream of the throat.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 35 U.S. patent(s) that reference this one
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