Robert Boschgmbh

Alfred Kärcher Se Co. Kg

Alfred Kärcher Gmbh Co. Kg

Felix Bensing

Florian Ebert

Daniel Kuehbacher

Uwe Knappenberger

Markus Oesterle

Dominik Scholl

Gábor Peflof

Andreas Seibold

Bernd Haberl

Christian Stewen

Saulius Martinkenas

Florian Mueller

Thomas Robieu

Ralph Peter

Jannik Stammler

Michael Scharmacher

Stefan Ender

Simon Michael Heitzer

Sebastian Junker

Anne Oberländer

Simon Jetter

Tobias Geltz

Andreas Neu

Heinz-Peter ULRICHSKÖTTER

The invention relates to a stator of an electric machine, comprising:—a laminated stator core (), which has a stator axis (), comprises a plurality of stator teeth () and a plurality of stator slots () formed between the stator teeth (), and is formed by a plurality of stacked stator laminations (); and —electrical conductor elements (), which run through the stator slots () of the laminated stator core () and are provided in order to form an electrical winding, more particularly a plug-in winding. In each of the stator slots (), a slot insulator (), more particularly a slot insulation paper, is provided in order to electrically insulate the conductor elements () from the laminated stator core (). The stator laminations () each have a plurality of lamination teeth () and a lamination yoke (), which connects the lamination teeth (). The stator teeth () of the laminated stator core () are each formed by stacked lamination teeth () of the stator laminations (). The stator is characterized in that, in the laminated stator core (), at least one stator lamination () is provided which is rotated in peripheral direction with respect to the stator axis (), relative to other of the stator laminations () of the laminated stator core (), such that, in each stator slot () of the laminated stator core (), a lamination tooth portion () of one of the lamination teeth () of said stator lamination protrudes into the stator slot ().

Stator of an electric machine

The present invention relates to an electrical machine () having a housing (), wherein the housing () has a hollow-cylindrical cooling jacket () for accommodating a stator () and, attached to the end sides of the cooling jacket (), housing closures (), in particular mounting plates, and wherein the cooling jacket () has cooling ducts () running between its end sides () and the housing closures () have redirection grooves () so that two adjacent cooling ducts () are fluidically connected by a redirecting groove (), whereby the cooling ducts () and the redirecting grooves () form a meandering cooling path () which extends through the housing () between an inlet () and an outlet () and through which a coolant can flow, wherein the housing () has a bypass duct () which fluidically connects the inlet () and the outlet () while bypassing the meandering cooling path (), or which fluidically connects two part regions of the meandering cooling path () while bypassing one part of the meandering cooling path ().

Electrical machine with bypass cooling duct

A rotor () of an electrical machine is already known, comprising a rotor body () which can be rotated about a rotor axis () and comprising several cooling ducts () which have a cooling duct opening () at each of its ends, wherein one cooling duct opening () of one of the cooling ducts () is arranged radially further outside than the other cooling duct opening () of the same cooling duct (). The driving force for generating an airflow through the cooling ducts () is generated by a radial offset between a channel of a hollow shaft of the rotor and one of the cooling duct openings of the rotor. In the rotor () according to the invention, the driving force for generating the airflow is generated solely in the cooling duct () in question of the rotor (). According to the invention: the first cover element () covers the radially innermost partial cross-section of the cooling duct opening () in question with an edge section which is radially outward with respect to the rotor axis () and in each case leaves a radially outermost partial cross-section of the same cooling duct opening () uncovered as a cooling duct outlet (); the other cooling duct opening () of the same cooling duct () is in each case a cooling duct inlet; an inflow which is axial with respect to the rotor axis () is provided in each case upstream of the cooling duct inlets (); and the geometric centre of gravity of the cooling duct outlet () is in each case offset in the radial direction relative to the rotor axis () with respect to the geometric centre of gravity of the cooling duct inlet () of the same cooling duct ().

Rotor of an electric machine

A suction unit is proposed which comprises a suction apparatus, a dirt collection container, a filter device, wherein the dirt collection container is connected in terms of flow via the filter device to the suction apparatus, and a cleaning device for the filter device, wherein the cleaning device forms a noise source for noise emissions in a frequency range below 2000 Hz, and wherein at least one perforated-plate resonator is associated with the cleaning device, wherein the at least one perforated-plate resonator has a chamber with a chamber space and with a chamber wall and has at least one perforated plate which covers the chamber space, and wherein the at least one perforated plate is connected, actively with respect to sound, to the cleaning device.

Suction device

A suction device is provided which includes a fan device for generating a suction air flow and an air conveying device having at least one flow deflection element comprising an inlet tube and an outlet tube, wherein the outlet tube is oriented transversely to the inlet tube, and wherein in a transitional area between the inlet tube and the outlet tube there is arranged a sound mirror device, which at least one of (i) reflects and (ii) absorbs sound.

Suction device with sound mirror device

A cleaning device is proposed which includes a base, an air-conduit device which is arranged on the base, and at least one chamber with a wall which delimits a cavity, an inlet device for a fluid stream and an outlet device being arranged on the wall, and at least one fluid channel running in the cavity between the inlet device and the outlet device, wherein at least one partition wall is arranged in the cavity, said partition producing an acoustic shielding effect between the inlet device and the outlet device.

Cleaning device

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Stuttgart, Germany

Felix Bensing