VENTILATEUR RADIAL DESTINE NOTAMMENT A LA CLIMATISATION DE VEHICULE AUTOMOBILE

• Main Author: JEAN-CLAUDE VERA ET MAURICE BERTOT
• Format: Patent
• Language: French
• Published: 18.09.1987
• Edition: 4
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

CE VENTILATEUR COMPREND UN BOITIER EN VOLUTE 10 DANS LEQUEL EST DISPOSEE UNE HELICE 11 DE VENTILATION RELIEE A DES MOYENS D'ENTRAINEMENT 12. L'HELICE COMPORTE UNE SERIE D'AUBES 13 S'ETENDANT A PEU PRES PARALLELEMENT A L'AXE DE ROTATION X-X DE CETTE HELICE, A PARTIR D'UN BOL 14 RELIANT CELLES-CI AUX MOYENS D'ENTRAINEMENT, VERS UN REBORD 15 D'UNE ENTREE D'AIR 16 DELIMITANT AVEC LE BOL UN ESPACE POUR UNE VEINE FLUIDE. LES SURFACES EN REGARD DU BOL ET DU REBORD DE L'ENTREE D'AIR, AU MOINS JUSQU'AUX REBORDS INTERIEURS DES AUBES, SONT ENGENDREES PAR ROTATION AUTOUR DUDIT AXE DE ROTATION X-X DE TRONCONS DE COURBES PARALLELES. AVANTAGEUSEMENT, CES TRONCONS DE COURBES SONT CONSTITUES PAR DES ARCS DE CERCLES CONCENTRIQUES. 1. A radial fan in particular for the air conditioning of a motor vehicle, comprising a volute housing (10) in which there is arranged a helical ventilation wheel (11) connected to driving means (12), the said helical wheel comprising a series of vanes (13; 20) each having a radially outer edge (13a) and a radially inner edge (13b; 20a) and extending in a direction approximately parallel to the axis of rotation (X-X) of the said helical wheel, from a bowl (14; 19) connecting these vanes to the driving means (12), to an edge (15) of an air intake (16) on the housing (10), this edge defining, with the bowl, a space for a fluid stream, the outer edges of the vanes defining a circle of diameter D, and the inner edges of the vanes defining a circle of diameter d, this bowl (14) and this edge (15) of the air intake on the housing, at least as far as the inner edges of the vanes, each having a surface of their own, and these surfaces being provided opposite each other and being generated by the rotation of sections of curves about the said axis of rotation (X-X), characterised in that the traces of these surfaces on a meridian plane passing through the axis of rotation (X-X) are parallel curves.