Combustion apparatus

• US 6,857,275 B2
• Filed: 10/21/2003
• Issued: 02/22/2005
• Est. Priority Date: 03/12/2001
• Status: Expired due to Term

• Current Assignee: Rolls-Royce PLC (Rolls-Royce Holdings Plc)
• Original Assignee: Rolls-Royce PLC (Rolls-Royce Holdings Plc)
• Inventors: Pidcock, Anthony, Spooner, Michael P., Close, Desmond
• Primary Examiner(s): Casaregola, Louis J.
• Application Number:
  US10/688,875
• Publication Number:
  US 20040083739A1
• Time in Patent Office: 490 Days
• Field of Search: 607/52, 607/54, 607/55, 607/59, 607/96, 298/900.2
• US Class Current: 60/796
• CPC Class Codes: F23R 2900/03041 Effusion cooled combustion chamber walls or domes
• CPC Class Codes: F23R 2900/03045 Convection cooled combustion chamber walls provided with turbolators or means for creating turbulences to increase cooling
• CPC Class Codes: F23R 3/002 Wall structures F23R3/02 and F23R3/007 take precedence
• CPC Class Codes: F23R 3/04 Air inlet arrangements

Abstract

A wall element for use as part of an inner wall of a gas turbine engine combustor wall structure is of cast construction and includes a plurality of cooling apertures provided therethrough and formed during the casting process. The cooling apertures may be located in positions where they could not be conventionally formed by laser drilling.

Claims

1. A wall element for use as part of an inner wall of a gas turbine engine combustor wall structure including inner and outer walls defining a space therebetween, the wall element including one or more generally projecting studs, the studs being for use in fixing the wall element to an outer wall of the wall structure, wherein each said stud includes a base region with said base region, of at least some of said studs extended to provide a land integral with the stud, and wherein a cooling aperture is provided in the land.