Abstract:
The invention relates to a propeller (1) comprising a hub (2), blades (3), and a shell (4) having two flanks (41, 42) connected by an elbow, the blades (3) extending from the hub (2) to the shell (4). According to the invention, the thickness (e1, e2) of at least one part of at least one of the flanks (41, 42) of the shell (4) is reduced towards the free end of said flank.
Abstract:
A cooling fan with partial ring members attached to the blade tips. The fan preferably is a one-piece molded fan with a central hub and a plurality of blade members. Partial ring members on the blade tips reduce weight and minimize potential failures caused by knit lines and operations at high rotational speeds.
Abstract:
The present invention provides a rotary axial fan and a stator fan for moving air through a heat exchanger for an internal combustion engine cooling system. The fan includes a hub and primary fan blades extending radially from the hub. An annular shroud is attached to the primary fan blades and supported coaxially with the central axis to limit the radial flow of air along the primary fan blades. A plurality of secondary fan blades are interposed between the primary fan blades and each have a first end attached to the annular shroud and terminate in a second end that is not attached to the hub. The stator fan includes a shroud with an array of stator fan blades supporting a hub for the radial axial fan. The size, orientation and material characteristics of the stator fan blades improve sound reduction and heat transfer of the rotary axial fan assembly.
Abstract:
A cooling fan with an integral structural support ring. The fan has a hub member and a plurality of blades extending therefrom. The fan is a one-piece plastic injection structure. The support ring is positioned between the root and tips of the blades.
Abstract:
A ring fan and shroud guide system which includes a rotating fan member with a conical outer ring and a cylindrical shroud member overlapping at least a portion of the outer ring. A plurality of guide vanes are provided in the shroud which minimize the tangential velocity component of the air flow entering the tip-gap region and provide improved air flow through the system. The guide vanes can have a curved configuration.
Abstract:
Die Erfindung betrifft einen Axiallüfter (1) zur Förderung von Kühlluft für eine Kühlvorrichtung eines Kraftfahrzeuges, wobei der Axiallüfter (1) Axialschaufeln (4) mit je einer Vorderkante (4a) und einer Hinterkante (4b), einer Schaufelspitze (4c) sowie einen mit den Schaufelspitzen (4c) verbundenen Mantelring (5) mit einer Anströmkante (5a) und einer Abströmkante (5b) aufweist. Es wird vorgeschlagen, dass die Anströmkante (5a) des Mantelringes (5) gegenüber den Vorderkanten (4a) der Axialschaufeln (4) in Strömungsrichtung (L) zurückgesetzt ist.
Abstract:
Die Erfindung betrifft einen Fahrzeuglüfter zum Kühlen eines Verbrennungsmotors (28), insbesondere in einem Nutzfahrzeug, mit einer zentralen Nabe (16) mit einer Nabenachse (42) und einem die Nabe (16) umgebenden Lüfterrad (12) mit Blättern (14), die sich radial von der Nabe (16) weg erstrecken. Die Nabe (16) erweitert sich von ihrer Strömungseintrittseite (36) her in ihrem Radius kegelförmig, und zwei oder mehr benachbarte Blätter (14) sind entfernt von der Nabe (16) miteinander verbunden.
Abstract:
The present invention provides a rotary axial fan and a stator fan for moving air through a heat exchanger for an internal combustion engine cooling system. The fan includes a hub and primary fan blades extending radially from the hub. An annular shroud is attached to the primary fan blades and supported coaxially with the central axis to limit the radial flow of air along the primary fan blades. A plurality of secondary fan blades are interposed between the primary fan blades and each have a first end attached to the annular shroud and terminate in a second end that is not attached to the hub. The stator fan includes a shroud with an array of stator fan blades supporting a hub for the radial axial fan. The size, orientation and material characteristics of the stator fan blades improve sound reduction and heat transfer of the rotary axial fan assembly.
Abstract:
L'invention propose un système de ventilateur (10) comportant un ventilateur (12) monté à rotation autour d'un axe principal (A) de rotation par rapport à un carénage (14), dans lequel le ventilateur (12) comporte une jupe annulaire (20) périphérique et une nervure radiale externe (24) qui s'étend depuis la face cylindrique externe (20e) de la jupe annulaire (20), et dans lequel le carénage (14) comporte : une face cylindrique interne (14i) qui s'étend à distance et en vis-à-vis de la face cylindrique externe (20e) de la jupe annulaire (20) ; une série de murets axiaux (26) qui sont répartis angulairement autour de l'axe principal (A) de rotation et une joue interne (28) qui s'étend vers l'intérieur du carénage (14) depuis la face cylindrique interne (14i) du carénage (14), caractérisé en ce que la joue radiale (28) est agencée axialement en amont des murets axiaux (26).