Particular embodiments of the inventive technology may be described as an air handling shroud for establishment at the inlet area of a fan, the shroud adapted to realign and/or redistribute fan inlet flow so as to reduce fan-generated noise without unacceptably impairing fan efficiency and/or performance. Certain embodiments present a lattice arrangement of cells through which air flows; the shroud may protrude up from an inlet face lying in a plane defined by the fan (e.g., by the fan housing or an inlet cone). It may have a hemispherical shape and a lower resistance-per-area sector at the pole (or polar region) thereof. Optional componentry includes but is not limited to a flow obstructer established at a fan proximal portion of the shroud, and acoustic material established on surfaces of the cells of the shroud.

Fan inlet air handling apparatus and methods

Die Erfindung betrifft einen Diagonalventilator (1) umfassend einen Elektromotor (10), ein Gehause (11) und ein innerhalb des Gehauses (11) aufgenommenes und uber den Elektromotor (10) antreibbares Diagonallaufrad (12), dessen im Betrieb erzeugte Diagonalstromung von einer Innenwand (111) des Gehauses (11) in eine axiale Stromungsrichtung umgelenkt wird, eine ansaugseitig angeordnete Einlaufduse (14) und ein ausblasseitig angeordnetes Schutzgitter (13), wobei das Gehause (11) das Diagonallaufrad (12) in Umfangsrichtung umgibt, das Schutzgitter (13) eine Vielzahl von Befestigungsstreben (131) aufweist, welche sich von dem Schutzgitter (13) in Axialrichtung zu der Einlaufduse (14) erstrecken und mit welchen das Schutzgitter (13) an der Einlaufduse (14) fixiert ist, das Gehause (11) mit einem ausblasseitigen Endabschnitt unmittelbar an einem in Radialrichtung ausenliegenden Randabschnitt des Schutzgitters (13) anschliest und wobei das Gehause (11) an den Befestigungsstreben (131) fixiert und durch die Befestigungsstreben (131) mit der Einlaufduse (14) verbunden ist.

Diagonalventilator mit Gehäuse

The invention relates to a housing ring (1) of an axial ventilator formed from at least two annular segments, having a radially outwardly facing cover surface (2). At least one securing rail (3) is formed in one piece on the cover surface (2) which forms a securing channel for introducing and fixing securing elements.

Housing ring of an axial ventilator

The ring has a circular connecting piece (2) formed on a supporting frame (1) that is assembled from a set of frame elements (6) by form and force-fitting connecting elements (3) An axial fan is arranged in the connecting piece, which is formed of circular segments (22) to be circumferentially arranged one after the other The segments are connected to each other and with the frame by form and force-fitting or material-bonded connections or by other connecting elements The frame includes a rectangular quadratic circumferential contour with four corners and a center opening

Wall ring for an axial ventilator

The invention relates to a wall ring for an axial fan comprised of a supporting frame (1) on which a circular connecting piece (2) is formed, inside which the axial fan is arranged. The supporting frame (1) is assembled from a plurality of frame elements (6) by means of form and force-fitting connecting elements. The circular connecting piece (2) is formed of a plurality of circular segments (22) arranged circumferentially one after the other, said circular segments being connected to each other and to the supporting frame (1) by means of form and force-fitting or material-bonded connections or by such connection elements, respectively.

Christian Weiss

Papers

Wall ring for an axial ventilator

Wall ring for axial fan