Spray nozzle arrangements

Abstract

A nozzle arrangement that produces an atomised spray or foam wherein the nozzle arrangement comprises a nozzle body with an inlet for a pressurized fluid into a chamber with an outlet orifice in the downstream wall and a prodder with a tapered conical tip wherein the prodder is inside of said chamber and at least part of the tip of the prodder protrudes inside the outlet orifice creating at leastone circumferential gap between the prodder tip and the outlet orifice whereby the fluid spins around at least part of the prodder tip and out through the circumferential gap and produces an atomizedspray or foam with a substantially full cone shape.

Description

technical field [0001] The present invention relates to a nozzle arrangement for delivering fluid from a nozzle in the form of an atomized spray or foam by using a tapered tapered insert in a final orifice, forcing the fluid to exit the nozzle through a very narrow circumferential gap. Fluid enters the chamber, rotates around a pushrod in the chamber, and exits through a small circumferential gap between the pushrod tip and the exit hole. In a preferred form, the push rod is slidably movable within the outlet aperture, with such movement preferably (but not exclusively) restricted. The device naturally produces a hollow cone, but can be configured such that a substantially full cone of spray or foam is produced. Background technique [0002] Atomized sprays are usually formed by swirling a fluid in a chamber and then through an exit orifice, and atomized sprays usually produce a full cone of spray, although the central region of the spray often has fewer droplets and someti...

AI Technical Summary

Problems solved by technology

As mentioned above, air is widely used in spray technology, but generally requires larger volumes and higher pressures

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