Global Patent Index - EP 0913556 A3

EP 0913556 A3 2000-07-26 - Turbine blade cooling

Title (en)

Turbine blade cooling

Title (de)

Turbinenschaufelkühlung

Title (fr)

Refroidissement d'une aube de turbine

Publication

EP 0913556 A3 (EN)

Application

EP 98308829 A

Priority

US 96212897 A

Abstract (en)

[origin: EP0913556A2] A blade (10) for a gas turbine engine is disclosed having several improved cooling features. The blade has a plurality of internal cooling passages. The blade has a tip cap aperture (46) and film cooling holes (20), arranged such that the rearmost cooling passage in the blade receives sufficient cooling in all areas to control local heating of the blade. The blade also has angled turbulence promoters to improve internal cooling and a specially shaped platform (14) to avoid heating of the blade platform edges. <IMAGE>

IPC 1-7 (main, further and additional classification)

F01D 5/18

IPC 8 full level (invention and additional information)

F01D 5/18 (2006.01); F01D 5/20 (2006.01); F01D 5/30 (2006.01)

CPC (invention and additional information)

F01D 5/20 (2013.01); F01D 5/186 (2013.01); F01D 5/187 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0913556 A2 19990506; EP 0913556 A3 20000726; JP H11193701 A 19990721

INPADOC legal status


2001-05-30 [18W] WITHDRAWN

- Date of withdrawal: 20010405

2001-04-04 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: DE FR GB IT

2001-03-28 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010126

2000-07-26 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-07-26 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI

1999-05-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): DE FR GB IT

1999-05-06 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI