ebm-papst

About: ebm-papst is a company organization based out in Mulfingen, Germany. It is known for research contribution in the topics: Rotor (electric) & Stator. The organization has 572 authors who have published 736 publications receiving 3763 citations.

Gehäuse für einen ventilator oder lüfter

Abstract: Die vorliegende Erfindung betrifft ein Gehause fur einen Ventilator (1) oder Lufter, insbesondere Axialventilator, umfassend eine ringformige Gehausewandung (2), die einen Stromungskanal (3) mit einer Einstromoffnung (4) und einer Ausstromoffnung (6) umschliest. Der Stromungskanal (3) weist einen in einer senkrechten Ebene zu einer mittleren Langsachse (X-X) kreisformigen Querschnitt auf, sowie eine Motorhalterung (7) fur einen Elektromotor (8) des Ventilators (1) innerhalb des Stromungskanals (3). Der Stromungskanal (3) besitzt einen sich an die Einstromoffnung (4) anschliesenden ersten Zylinderabschnitt (9) sowie einen sich mit seiner kleinen Kegelstumpfflache hieran anschliesenden, zur Ausstromoffnung (6) sich erweiternden zweiten Kegelstumpfabschnitt (11). Die Halterung (7) besteht aus mehreren, mit einem Ende an dem zweiten Kegelstumpfabschnitt (11) befestigten Streben (12), die von einer inneren Umfangsflache des Kegelstumpfabschnittes (11) in Richtung auf die Langsachse (X-X) verlaufen und an ihren anderen innenliegenden Enden Halterungsabschnitte fur den Elektromotor (8) aufweisen. Es sind Befestigungsmittel (24, 26) der Gehausewandung (2) im Bereich der Einstromoffnung (4) fur die Verbindung mit einen Anschlussteil, insbesondere einem Wandring (49a, b, c, d) sowie mit Befestigungsmitteln (28) im Randbereich seiner Ausstromoffnung (6) fur ein Schutzgitter (23) und/oder Befestigungsmittel (29, 31) fur die Befestigung eines Ausendiffusors (37) an der Gehausewandung (2) im Bereich der Ausstromoffnung (6) vorhanden.

Method for determination of motor parameters of electronically commutated motors during operation involves motor which has stator with majority of stator blocks and permanent magnetic rotor is cooperating with this stator

Abstract: The method involves a motor which has a stator with a majority of stator blocks and a permanent magnetic rotor is cooperating with this stator, during operation which induces alternating voltage into the stator blocks. A power amplifier is arranged at the stator blocks to control the current supply of the stator blocks. During the operation the energy input to the motor is interrupted whereby the rotor further rotates. Independent claims are also included for the following: (A) Electronic commutator motor; (B) Method for determination of temperature dependent motor parameters and (C) Method for operation of electronically commutated motor.

Housing for an axial fan

Abstract: A housing for a fan or blower, in particular an axial fan, includes a wall ring ( 2 ) having an inlet nozzle section ( 3 ), an outer diffuser ( 6 ) having an inlet flow opening ( 7 ) and an outlet flow opening ( 8 ), and a holder for an electric motor ( 9 ) of the fan. The holder is arranged in an inner space of the housing. The outer diffuser ( 6 ) is formed by at least two partial ring sections that are connected to the outer circumferential surface via mechanical connection elements. The holder includes several struts ( 14 ) that are fastened to an inner circumferential surface of the outer diffuser ( 6 ) by one end, are circumferentially spaced apart, and are fastened in the edge region of the inlet flow opening ( 7 ). The struts can be installed by their other end to a motor flange ( 16 ) of the motor housing ( 17 ) of the electric motor ( 9 ).

Pneumatic composite having mass balancing

Abstract: The invention relates to a blower device for delivering at least one medium, comprising a blower having a housing with an inlet and an outlet, a nozzle which is fluidically connected and arranged on the housing such that at least one medium can flow therethrough, wherein the nozzle is designed to effect a negative pressure on the at least one medium at least in some sections, at least one sensor, wherein the sensor is arranged in the effective region of the nozzle and designed to measure at least parameters of the at least one medium which are required to determine the mass of the at least one medium.

Approaches for Improving Lumped Parameter Thermal Networks for Outer Rotor SPM Machines

Abstract: This work is about the transient modeling of the thermal characteristics of outer rotor SPM machines by considering a lumped parameter thermal network based approach. The machine considered here poses particular challenges for the modeling, e.g., due to the semi-closed stator surrounded by a rotor bell that provides a speed-dependent cooling of the stator coils. Starting from a simpler basic network configuration, model extensions and refinements are presented and discussed. The subsequent parameter identification is done by means of an initial design of experiments based sampling, and a subsequent single-objective and also a multi-objective optimization of error functions for the components’ temperatures. Analyzing the therefrom derived Pareto fronts and the consequent tradeoff regarding achievable minimum modeling errors for different system’s components gives insights into where and how the modeling can be further improved. All the investigations are based on experimental results obtained through operating a particularly developed test setup.