Process for the variable limitation of a flat flow channel...

B - Operations – Transporting – 29 – C

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B29C 47/16 (2006.01)

Patent

CA 2231533

The geometry of a flow channel (1) can be varied within wide limits if at least one wall of the flow charmel (1) takes the form of a sheet stack (2) which is pushed from the rear into the channel to a greater or lesser extent by means of adjusters (7). The adjustment may be effected either uniformly over the entire width of the flow channel (1) or only locally at certain points thereof. It is thus possible, while a medium is passing through the flow channel (1), to alter from outside the flow resistance either of the en-tire channel or only at certain points and thus alter the entire mass flow or the mass flow distribution as desired. New processing possibilities are given by the greater flexibility of the sheet stack (2) in relation to solid channel walls.

La géométrie d'un canal d'écoulement (1) peut subir de fortes variations si l'on conçoit au moins une de ses parois sous la forme d'un paquet de tôles (2), qui est plus ou moins poussé dans le canal par l'arrière au moyen d'éléments d'ajustement (7). L'ajustement peut être effectué uniformément sur toute la largeur du canal d'écoulement (1) ou seulement localement en certains points du canal d'écoulement (1). Pendant qu'un milieu circule dans le canal d'écoulement (1), il est ainsi possible de modifier depuis l'extérieur la résistance à l'écoulement dans la totalité du canal ou bien la résistance à l'écoulement en certains points, ce qui permet de modifier de la façon souhaitée la totalité du flux de matière ou la répartition du flux de matière. Grâce à la meilleure flexibilité du paquet de tôles (2) par rapport aux parois massives des canaux, on obtient de nouvelles possibilités technologiques.

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