Global Patent Index - EP 1159530 A1

EP 1159530 A1 2001-12-05 - COOLING-TOWER FAN AIRFOILS

Title (en)

COOLING-TOWER FAN AIRFOILS

Title (de)

SCHAUFELPROFILE FÜR EINEN KÜHLTURMVENTILATOR

Title (fr)

PROFILS D'AUBE POUR VENTILATEUR DE TOUR DE REFROIDISSEMENT

Publication

EP 1159530 A1 (EN)

Application

EP 00908329 A

Priority

  • US 0001434 W
  • US 11898599 P

Abstract (en)

[origin: WO0046511A1] A family of airfoils (20, 30) for a blade of a cooling-tower fan is provided wherein the blade has a root region and a tip region, and the family of airfoils comprises an airfoil (30) in the root region of the blade having a Reynolds number of 500,000, and an airfoil (20) in the tip region of the blade having a Reynolds of 1,000,000, and wherein each airfoil is characterized by a maximum lift coefficient that is largely insensitive to roughness effects.

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

F04D 29/38

IPC 8 full level (invention and additional information)

F04D 29/38 (2006.01); F04D 29/68 (2006.01)

CPC (invention and additional information)

F04D 29/38 (2013.01); F04D 29/681 (2013.01)

Citation (search report)

See references of WO 0046511A1

Designated contracting state (EPC)

DE DK ES FR IT NL

EPO simple patent family

WO 0046511 A1 20000810; AU 2969700 A 20000825; AU 746432 B2 20020502; CA 2361801 A1 20000810; EP 1159530 A1 20011205

INPADOC legal status


2005-03-16 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20040803

2004-05-26 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION)

- Designated State(s): DE DK ES FR IT NL

2001-12-05 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010803

2001-12-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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

2001-12-05 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

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