EP 3430709 A1 20190123 - STATOR FRAME FOR MEDIUM AND LARGE ROTATING ELECTRICAL MACHINES FOR NOISE REDUCTION
Title (en)
STATOR FRAME FOR MEDIUM AND LARGE ROTATING ELECTRICAL MACHINES FOR NOISE REDUCTION
Title (de)
STÄNDERGEHÄUSE FÜR MITTLERE UND GROßE ROTIERENDE ELEKTRISCHE MASCHINEN ZUR SCHALLREDUKTION
Title (fr)
BOÎTIER PORTEUR DE RÉDUCTION DU BRUIT POUR MOYENNES ET GRANDES MACHINES ÉLECTRIQUES TOURNANTES
Publication
Application
Priority
- DE 102016104594 A 20160314
- DE 2017100195 W 20170310
Abstract (en)
[origin: WO2017157384A1] The invention relates to a stator frame for a medium or large electrical machine for noise reduction. The problem to be solved by the invention is the creating of a stator frame (1) for a medium or large rotating electrical machine for noise reduction that enables both very high mechanical stiffness and a certain elasticity, is simple in design, inexpensive to produce, and can be used universally in electrical machines of different sizes. In the stator frame (1), specially designed elastic elements are arranged in the partition walls (4) of the thereby reinforced stator frame (1) for noise reduction, as vibration-reducing elements. Open slots (4f) are arranged in the partition walls (4) of the stator frame (2) on a radius, distributed regularly or irregularly in a circular shape, such that a certain number of directed webs (4c) are formed between an inner ring (4a) and an outer region of the partition wall (4e). Said directed webs (4c) have effect as elastic elements by means of the open slots (4f) in the radial direction; that is, they dampen or decouple vibrations, while the directed webs (4c), in contrast, considered in the circumferential direction, i.e. in the tangential or nearly tangential direction, transfer the tensile stress waves and torque oscillations coming from the stator plate pack to the outside, to the outer, more stable parts, i.e. to the outer region of the partition wall (4e) of the solid stator frame (1). Furthermore, the partition walls in the outer regions (4e) are reinforced by material, or additional, supplemented masses are arranged. The invention can be used for medium and large rotating electrical machines in the power range greater than 200 KW.
IPC 8 full level
H02K 5/24 (2006.01)
CPC (source: EP)
H02K 5/24 (2013.01)
Citation (search report)
See references of WO 2017157384A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102016104594 A1 20170914; DE 112017001289 A5 20181227; EP 3430709 A1 20190123; WO 2017157384 A1 20170921
DOCDB simple family (application)
DE 102016104594 A 20160314; DE 112017001289 T 20170310; DE 2017100195 W 20170310; EP 17720661 A 20170310