Improved internal mix air atomizing nozzle assembly

B - Operations – Transporting – 05 – B

Patent

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Details

B05B 7/06 (2006.01)

Patent

CA 2577851

An internal mix spray nozzle assembly adapted for operation with lesser pressurized air requirements. The spray nozzle assembly includes a liquid passage for directing a liquid flow stream against an impingement pin, and an air guide is provided for forming an annular pressurized air passage about the liquid flow stream for striking and atomizing a laterally spreading dispersion of liquid from the impingement surface. For enhancing liquid atomization, the air guide defines a relatively narrow width air flow opening for substantially accelerating and increasing the pressure of the atomizing air stream, and the impingement pin is formed with a relatively large primary impinging surface and a parallel downstream secondary impingement surface that facilitates further liquid particle breakdown and prevents the accumulation of liquids about the bottom of the impingement pin.

La présente invention concerne un ensemble de buse de pulvérisation par air de mélange interne qui est conçu pour fonctionner avec des exigences d'air moins comprimé. Cet ensemble de buse de pulvérisation comprend un passage à liquide conçu pour diriger un courant d'écoulement de liquide contre un tenon de contact, ainsi qu'un guide d'air conçu pour former un passage à air comprimé annulaire autour du courant d'écoulement de liquide afin de frapper et de pulvériser une dispersion de liquide à diffusion latérale depuis la surface de contact. Afin d'améliorer la pulvérisation de liquide, le guide d'air définit une ouverture d'écoulement d'air de largeur relativement étroite pour sensiblement accélérer et augmenter la pression du courant d'air comprimé et le tenon de contact est formé avec une surface de contact primaire relativement grande et une surface de contact secondaire en aval parallèle qui améliore la fragmentation des particules de liquide et empêche l'accumulation de liquides autour de la partie inférieure du tenon de contact.

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