Single piece nozzle cover design and method of manufacture

Details Single piece nozzle cover design and method of manufacture Single piece nozzle cover design and method of manufacture

F - Mech Eng,Light,Heat,Weapons

24

F

F24F 13/20 (2006.01) B29C 45/00 (2006.01) F25D 23/02 (2006.01)

Patent

CA 2602068

A blower wheel housing for an air conditioning system is formed of a single molded element having a base section and a nozzle section with included vanes having complex shapes. This is accomplished by employing a pair of mold core elements which together form a cavity into which a plastic material is injected to form the cover with its integral nozzle and vanes, and the mold core elements are then withdrawn in opposite directions but at an angle to the direction normal to the two mold core elements to thereby accommodate the complex shapes of the vanes. In one embodiment, the top wall of the nozzle is disposed at an acute angle to the longitudinal plane of the cover, and the mold core elements are also withdrawn in a plane that is parallel to this wall.

Un boîtier de roue de soufflerie destinée à un système d'air conditionné est constitué en un seul élément moulé possédant une partie base est une partie buse avec des aubes incluses à formes complexes. On obtient ce boîtier en utilisant une paire d'éléments de noyau de moule qui forment ensemble une cavité dans laquelle une matière plastique est injectée afin de former le couvercle avec sa buse intégrale et ses aubes, et ces éléments de noyau de moule sont ensuite retirés en directions opposées mais selon un angle perpendiculaire aux deux éléments de noyau de moule afin de prendre en compte les formes complexes de aubes. Dans un mode de réalisation de l'invention, la paroi supérieure de la buse est placée à un angle aigu par rapport au plan longitudinal du couvercle et les éléments de noyau de moule sont également retirés dans un plan parallèle à cette paroi.

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