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.

Radial fan wheel

Abstract: The invention relates to a radial fan wheel (1), in particular for use in gas fans with a steep fan characteristic curve. Said fan wheel is characterised as follows: it comprises a plurality of vanes (2) that are distributed over its circumference; the vanes (2) run, when viewed in the radial direction, from an inner intake region (4) to an outer exit region (6); when viewed in an axial direction, i.e. in the direction of the rotational axis (14), the vanes (2) run between an intake side (16) and an axially opposite hub side (18); on the intake side (16), the vanes (2) are connected along and beyond their radial extension to the exit region (6) to a cover plate (20), which comprises a central inflow opening (22) that opens into the intake region (4); on the hub side (18), the vanes (2) are only connected to a central hub (24) by their radially innerlying end regions; the vanes (2) and the cover plate (20) define an outer fan wheel diameter (D), which is at least ten times as long as an axially measured flow exit width (B) of the vanes (2) in the exit region (6).

Cooling device for an electric or electronic component and method for mounting the same

Abstract: A cooling arrangement for an electrical or electronic component (1), comprises a cooling member (2) which takes up heat from the component to be cooled. The component has a foil, mat, film or band type heat conducting element (3) located in an opening (O) in the cooling member. The opening is a groove with a U or V-shaped cross section.

Rotor, in particular for an axial fan

Abstract: An axial ventilator has a fan with a number of blades whose roots are attached to a circular hub. The hub has an outer face on the root side and an inner face with a series of alternating thick (5b) and thin (5a) sections.

Method for setting the air ratio on a firing device and a firing device

Abstract: The temperature generated by a firing apparatus, particularly a gas burner, depends on the mixing ratio between the quantity of air and the quantity of gas fed to the firing apparatus, characterized by the excess air coefficient .lambda., at a predefined burner load (air mass flow rate) in such a way that the temperature generated by the firing apparatus reaches a maximum when .lambda.=1. According to the inventive method for adjusting the excess air coefficient, said maximum temperature T max is determined, whereupon the desired setpoint value .lambda.hy of the excess air coefficient is adjusted and the associated setpoint temperature T soll is measured. A characteristic curve which represents the correlation between the respective air mass flow rates and the setpoint temperatures at the setpoint value .lambda.hy of the excess air coefficient and allows combustion to be regulated to an optimal hygienic state can be determined from said determined correlation between the setpoint temperatures T soll at different predefined burner loads. The inventive firing apparatus is adapted to carry out said method and especially comprises a mass flow sensor in the air delivery zone as well as a temperature sensor in the effective range of the burner flame.

Anordnung zum Bestimmen eines Drucks

Abstract: Eine Anordnung (100) zum Bestimmen eines durch eine mittels eines Elektromotors (31) angetriebene Pumpe (30) erzeugten Drucks (64) ist dazu eingerichtet, den Druck (64) auf Grundlage einer Differenz aus einem inneren Drehmoment (114) und einem Verlustmoment (108) zu ermitteln, wobei die Anordnung (100) weiterhin dazu eingerichtet ist, das innere Drehmoment (114) aus einem Motorstrom (110) und einer Motorkonstante (ke) zu ermitteln.