Global Patent Index - EP 1028229 A1

EP 1028229 A1 2000-08-16 - Turbomachine blade

Title (en)

Turbomachine blade

Title (de)

Turbomaschinenschaufel

Title (fr)

Aube de turbomachine

Publication

EP 1028229 A1 (DE)

Application

EP 99810111 A

Priority

EP 99810111 A

Abstract (en)

The flow deflector (11) is connected to a platform (15), shaped like a parallelogram with a nose (14) extending in circumferential direction. The rear edge base point and front edge base point of the flow deflector are each located in one corner of the parallelogram. One longitudinal parallelogram side is positioned as a tangent to the suction-sided profile line. The nose is positioned on the downstream end suction-sided long parallelogram side of the platform.

Abstract (de)

Eine Strömungsmaschinenkomponente besteht im wesentlichen aus einer Strömungsumlenkvorrichtung (11), welche auf der Plattform (15) des Fusses der Komponente angeordnet ist Im Betrieb ist diese Komponente durch aerodynamische Kräfte, Wärmespannungen, und gegebenenfalls Fliehkräfte mechanisch hoch belastet, wobei auch die Materialtemperatur sehr hoch sein kann. Besonders ungünstige Spannungsverhältnisse finden sich am Übergang von der Strömungsumlenkvorrichtung (11) in die Plattform (15), unter anderem aufgrund der Umlenkung des Kraftflusses und der Kerbwirkung im engen Übergangsradius. Insbesondere am Vorderkanten-Basispunkt (16), am Hinterkanten-Basispunkt (17), und im Bereich der maximalen Profilwölbung der saugseitigen Profillinie (19). Der Kraftfluss wird verbessert und die Lebensdauer der Komponente erhöht, wenn die Plattform so gestaltet wird, dass die mechanisch hoch belasteten Stellen am Plattformrand zu liegen kommen. <IMAGE>

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

F01D 5/14

IPC 8 full level (invention and additional information)

F01D 5/14 (2006.01)

CPC (invention and additional information)

F01D 5/141 (2013.01); F05D 2240/80 (2013.01)

Citation (applicant)

None

Citation (search report)

Designated contracting state (EPC)

DE GB

EPO simple patent family

EP 1028229 A1 20000816; EP 1028229 B1 20050921; DE 59912578 D1 20051027; US 6343914 B1 20020205

INPADOC legal status


2017-05-31 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: GB

- Payment date: 20170216

- Year of fee payment: 19

2017-04-28 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Payment date: 20170217

- Year of fee payment: 19

2016-08-09 [REG DE R081] CHANGE OF APPLICANT/PATENTEE

- Owner name: GENERAL ELECTRIC TECHNOLOGY GMBH, CH

- Free text: FORMER OWNER: ALSTOM TECHNOLOGY LTD., BADEN, CH

- Document: DE 59912578

2016-08-09 [REG DE R082] CHANGE OF REPRESENTATIVE

- Document: DE 59912578

- Representative's name: ROESLER, UWE, DIPL.-PHYS.UNIV., DE

2006-08-30 [26N] NO OPPOSITION FILED

- Effective date: 20060622

2005-12-28 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20051205

2005-10-27 [REF] CORRESPONDS TO:

- Document: DE 59912578 P 20051027

2005-09-21 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE GB

2005-09-21 [REG GB FG4D] EUROPEAN PATENT GRANTED

- Free text: NOT ENGLISH

2004-03-31 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: ALSTOM TECHNOLOGY LTD

2003-03-19 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030131

2002-11-27 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: ALSTOM (SWITZERLAND) LTD

2001-12-12 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: ALSTOM

2001-05-02 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: DE GB

2001-03-28 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: ALSTOM POWER (SCHWEIZ) AG

2001-03-21 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010116

2000-08-16 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE GB

2000-08-16 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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