Global Patent Index - EP 1002957 A2

EP 1002957 A2 2000-05-24 - Radial fan

Title (en)

Radial fan

Title (de)

Radialgebläse

Title (fr)

Ventilateur radial

Publication

EP 1002957 A2 (DE)

Application

EP 99122993 A

Priority

DE 29820767 U

Abstract (en)

The fan has an impeller (10) which has a blade ring (15) on its periphery. A partition (26) which is arranged on one of the side walls, engages with the impeller and divides its interior chamber into two chambers. The blade ring has labyrinth seal-type protrusions and/or cavities (20) directly on the peripheral wall region (19) of the blade ring for preventing the airflow between the impeller and the blade ring.

Abstract (de)

Es wird Radialgebläse mit einem topfartigen Laufrad (10) vorgeschlagen, das an seinem Umfang mit einem Schaufelkranz (15) versehen ist. Ein das Laufrad (10) aufnehmendes Gehäuse (11, 11') erweitert sich ausgehend von einem teilkreisartig gekrümmten, direkt entlang des Schaufelkranzes (15) verlaufenden Umfangswandbereich (19) schneckenartig in Drehrichtung des Laufrads (10) radial zu einem Auslaß (21) und besitzt zwei die axialen Stirnseiten des Laufrads (10) abdeckende Seitenwandungen (23, 24). Eine an einer der Seitenwandungen (24) angeordnete Trennwand (26) greift in das topfartige Laufrad (10) ein und unterteilt dessen Innenraum in einen ersten und einen zweiten Saugraum. Dem ersten Saugraum ist eine Ansaugöffnung (28) zugeordnet, und der zweite Saugraum ist dem direkt entlang des Schaufelkranzes (15) verlaufenden Umfangswandbereich (19) zugewandt. Der direkt entlang des Schaufelkranzes (15) verlaufende Umfangswandbereich (19; 39) ist zur Verhinderung einer Luftströmung zwischen ihm und dem Laufrad (10) mit labyrinthdichtungsartigen Erhöhungen und/oder Vertiefungen (20) versehen. <IMAGE>

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

F04D 25/16

IPC 8 full level (invention and additional information)

F04D 17/04 (2006.01); F04D 25/16 (2006.01); F04D 29/10 (2006.01)

CPC (invention and additional information)

F04D 25/166 (2013.01); F04D 17/04 (2013.01); F04D 29/102 (2013.01)

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

DE 29820767 U1 19990114; AT 247231 T 20030815; EP 1002957 A2 20000524; EP 1002957 A3 20020116; EP 1002957 B1 20030813; ES 2200457 T3 20040301

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