Device for deflecting at least a portion of a cooling fluid lowing axially in an intermediate space which is arranged between a rotor and a stator of a rotating electrical machine

Patent metadata

Field	Value
Publication number	US-2016241111-A1
Application number	US-201415027572-A
Country	US
Kind code	A1
Filing date	Sep 11, 2014
Priority date	Oct 14, 2013
Publication date	Aug 18, 2016
Grant date	—

Abstract

A device for deflecting at least a portion of a cooling fluid flowing axially in an intermediate space is arranged between a rotor and a stator of a rotating electrical machine, in particular of a turbogenerator, wherein at least one blade can be arranged on a prespecifiable section of an outer face of the rotor and in the intermediate space, which blade is designed and can be arranged in such a way that a portion of the cooling fluid flowing in the intermediate space can be radially deflected in the direction of the stator by said blade.

First claim

1 . A device for deflecting at least a portion of a cooling fluid that is flowing axially in an intermediate space that is arranged between a rotor and a stator of a rotating electrical machine, comprising:
at least one blade arranged on a predetermined section of an outer face of the rotor and in the intermediate space, said blade arranged in such a manner that a portion of the cooling fluid that is flowing in the intermediate space is deflected towards the stator by means of said blade, at least one connecting element connecting the blade to the rotor, and at least one outlet opening that extends parallel to the longitudinal axis of the rotor arranged on the contacting element such that a portion of the cooling fluid that makes contact with the connecting element can flow axially through said outlet opening.

2 . The device as claimed in claim 1 ,
wherein the blade is embodied as a radial blade, and wherein a portion of the cooling fluid that is flowing in the intermediate space makes contact with said blade.

3 . The device as claimed in claim 1 ,
wherein the blade and the connecting element are connected to one another so as to form an individual unit.

4 . The device as claimed in claim 2 , comprising
two or more blades arranged on the predetermined section of the rotor distributed over the periphery of the rotor.

5 . The device as claimed in claim 1 ,
wherein the blade is a blade of a drum impeller radial blower that is connected to the rotor.

6 . The device as claimed in claim 5 , further comprising:
at least one outlet opening that extends parallel to the longitudinal axis of the rotor arranged on the drum impeller radial blower such that a portion of the cooling fluid that is flowing in the intermediate space can flow axially through said outlet opening.

7 . A rotor unit for a rotating electrical machine, said rotor unit comprising
a rotor, at least one device as claimed in claim 1 , said device being arranged on at least one predetermined section of an outer face of the rotor.

8 . A rotating electrical machine, comprising:
a stator and a rotor, at least one device as claimed in claim 1 .

9 . A method for cooling a rotating electrical machine, said electrical machine comprising a rotor and a stator, the method comprising:
introducing a cooling fluid into an intermediate space that extends axially between the rotor and the stator, wherein a portion of the cooling fluid that is introduced into the intermediate space is deflected at at least one predetermined section of the rotating electrical machine radially towards the stator.

10 . The method as claimed in claim 9 ,
wherein the portion of the cooling fluid that is introduced into the intermediate space is deflected radially towards the stator by means of at least one radial blade that is arranged in the predetermined section of the rotating electrical machine on an outer face of the rotor and in the intermediate space.

11 . The device as claimed in claim 1 ,
wherein the rotating electrical machine comprises a turbogenerator.

12 . The rotor unit as claimed in claim 7 ,
wherein the rotating electrical machine comprises a turbogenerator.

13 . The rotating electrical machine as claimed in claim 8 ,
wherein the rotating electrical machine comprises a turbogenerator.

14 . The method as claimed in claim 9 ,
wherein the rotating electrical machine comprises a turbogenerator.

Assignees

• Siemens Ag

Inventors

• Grau Sorarrain Esteban
• Jäkel Christian
• Koebe Mario
• Kowalski Matthias
• Lehmann Christoph
• Mashkin Andrey
• Plotnikova Olga
• Schild Carolin

Classifications

• H02K7/1823

  structurally associated with turbines or similar engines · CPC title

• H02K9/00 Primary

  Arrangements for cooling or ventilating (channels or ducts in parts of the magnetic circuit H02K1/20, H02K1/32; channels or ducts in or between conductors H02K3/22, H02K3/24) · CPC title

• H02K9/06 Primary

  with fans or impellers driven by the machine shaft · CPC title

• H02K9/10

  by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing · CPC title

• H02K9/08

  by gaseous cooling medium circulating wholly within the machine casing (H02K9/10 takes precedence) · CPC title