Electronic actuator for simultaneous liquid flowrate and...

G - Physics – 05 – D

Patent

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G05D 7/06 (2006.01) B05B 1/08 (2006.01) B05B 17/04 (2006.01) F16K 31/02 (2006.01) G05D 16/20 (2006.01)

Patent

CA 2671510

An electric solenoid valve and electronic circuitry for actuating the valve in such a manner as to control the liquid flow into a device, such as a spray nozzle, is described. By altering the characteristics of the electrical signal driving the valve, the flowrate of liquid through the valve and the pressure drop across the valve during the instantaneous flow can be controlled with a single actuator. The complex waveform of the solenoid drive signal allows decoupled control of droplet size and average flow rate through the nozzle.

L'invention concerne une soupape électrique à solénoïde et un ensemble de circuits servant à actionner la soupape de façon à commander l'écoulement liquide dans un dispositif, par exemple une buse à pulvérisation. En modifiant les caractéristiques du signal électrique entraînant la soupape, le taux d'écoulement du liquide à travers la soupape et la chute de pression à travers la soupape lors de l'écoulement instantané peut être commandé à l'aide d'un seul dispositif d'actionnement. La forme d'ondes complexe du signal d'entraînement de solénoïde permet de commander de façon découplée la taille de gouttelette et le taux d'écoulement moyen à travers la buse.

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