Ebm-papst Mulfingen Gmbh & Co Kg

Emb-papst Mulfingen Gmbh & Co Kg

Katrin Bohl

Marc Schneider

Jürgen Schöne

Erhard Gruber

Reinhard Strohmeier

Oliver Haaf

Christian Haag

Christian Hammel

Thorsten Pissarczyk

Markus Engert

Christian Pfaff

Markus Hoff

Dieter Best

Daniel Gebert

Thomas Sauer

Matthias Maschke

Michael Strehle

Sven Beck

Jens Müller

Björn Sudler

Erik Reichert

Angelika Klostermann

Tobias Ehmann

Alexander Frank

Eric Reichert

Juergen Schoene

Reichert Eric

Schneider Marc

The invention relates to an electric motor comprising an electronics housing in which motor electronics are accommodated, a stator bush for accommodating a stator and which is axially adjacent to the electronics housing, and a cooling impeller which is axially adjacent to the stator bush and which can be driven via a rotor, wherein a fluidically connected axial through-channel is provided in the stator bush and in the electronics housing, through which channel a cooling air flow generated by the cooling impeller can be conveyed, and wherein the cooling impeller has a blade geometry such that, in normal operation of the electric motor, the cooling air flow is drawn in radially from outside at a peripheral radial air inlet of the cooling impeller and pressed through the through-channel in axial direction.

Electric motor comprising pressing cooling air conveyance and method for cooling components of the electric motor

An axial fan for use with a wall ring plate includes a housing having an inlet region and a rotor. The rotor has an increased rotor diameter compared to a standardised rotor diameter. On the inlet side, the inlet region has a tapered section that narrows in an arched manner in a cross-sectional view from an inlet diameter to a wall ring diameter. The axial width and radial length of the tapered section are formed in a predetermined ratio.

Axial fan with increased rotor diameter

A diffuser () for a fan () of axial, radial or diagonal type of construction, has an inlet opening () and having an outlet opening () for a gaseous medium which flows through a diffuser interior (I), which is enclosed by an outer housing (), in an axially oriented main flow direction (S) from the inlet opening () to the outlet opening (). The cross section of the diffuser interior (I) increases from the cross section () of the inlet opening to the cross section () of the outlet opening (), wherein the outer housing () forms an outer diffuser part (AD) which delimits the diffuser interior (I) to the outside. Along the main flow direction (S), the cross section of the outer diffuser part (AD) changes from a circular cross section () at the inlet opening () to a non-circular cross section () at the outlet opening ().

Fan diffuser having a circular inlet and a rotationally asymmetrical outlet

A ventilation device, in particular for heating, cooling and/or humidifying air in residential buildings, includes a duct-shaped housing () with an air inlet opening () and an air outlet opening (), and a fan impeller () as well as a filter unit, heat exchange unit and/or heating coil unit () arranged in the main flow direction (Z) of an air flow generated by the fan impeller (). An air guiding device () is arranged in the flow direction (Z) of the air flow in front of a suction nozzle ()&#x2014;configured as a flow conditioner, includes a bar structure with air guiding bars-such that a flow inlet opening is configured on the suction side at an axial height in front of the flow inlet opening () by the bar structure whose opening surface is smaller than the opening surface of the flow inlet opening ().

Ventilation device, in particular for heating, cooling, and/or humidifying air in residential buildings

The invention relates to a drum rotor wheel for a fan having bulges to accommodate balancing weights. A drum rotor wheel according to the invention has several blades that are curved forward. The blades have a leading edge and a trailing edge. A top disc and a bottom disc are provided on the drum rotor wheel. At least one blade of the drum rotor wheel has a bulge on its leading edge. This bulge minimizes the area of flow separation, as a result of which the magnitude of the flow separation is likewise minimized. In other words, due to the bulge, the efficiency of the drum rotor wheel is increased.

Balancing pockets

Fan drum rotor

A fan wheel () is designed as a radial or diagonal fan, comprising a top plate () with an inlet port (), a base plate () and a plurality of fan blades () distributed around the inlet port () and around an axis of rotation (Z). Blade ducts extend () respectively between the adjacent fan blades (). The blade ducts lead radially or diagonally outward from the area of the inlet port () and form blow-out ports in the outer region. The blade ducts () are designed, with respect to their effective flow cross-section, as large enough that during operation, a turbulent flow with a Reynolds number markedly greater than 2300 is achieved. The top plate () or the base plate () or both feature a rotationally asymmetrical geometry with a continuous profile, at least in angular sections encompassing the fan blades ().

Radial or diagonal fan wheel

The present invention relates to a fan wheel in a version as a radial or diagonal fan, of a baseplate and of a plurality of fan blades arranged so as to be distributed over the circumference of the inlet port and around an axis of rotation. The fan wheel has a shroud with an inlet port and the shroud and/or the baseplate have/has in this case a nonrotationally symmetrical geometry which in each case has a continuous and point-invariable profile, as seen in the axial or axially parallel direction.

Growing community of inventors

Künzelsau, Germany

Katrin Bohl