IMPROVED ROTATING ELECTRIC MACHINE

Title:

IMPROVED ROTATING ELECTRIC MACHINE

Document Type and Number:

WIPO Patent Application WO/2012/073207

Kind Code:

A3

Abstract:

An electric machine (7) comprises an outer casing (28), a substantially tubular stator (8) housed inside the casing (28) and having a longitudinal axis (L), a rotor (9) inserted in the stator (8) with a predetermined interspace (31) and has at least one substantially longitudinal passage (16) extending lengthwise thereof, air cooling means (33) associated with the rotor (9) and adapted to promote forced circulation of an air flow over the stator (8) and the rotor (9) and comprising an annular peripheral gap (29) defined between the stator (8) and the casing (28). The gap (29) is fluidically connected to the longitudinal passage (16) and to the interspace (31) to define a looped path (30) therewith for the circulation of the cooling air flow.

Inventors:

BERTOTTO EZIO (IT)

Application Number:

PCT/IB2011/055395

Publication Date:

August 02, 2012

Filing Date:

November 30, 2011

Export Citation:

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Assignee:

REEL SRL (IT)
BERTOTTO EZIO (IT)

International Classes:

H02K9/06; H02K9/12

Domestic Patent References:

WO2010081140A2

2010-07-15

Foreign References:

US5866959A	1999-02-02
US20060055254A1	2006-03-16
FR1250660A	1961-01-13
US5602435A	1997-02-11

Other References: