Nozzle arrangement and use thereof
AssigneeFesto AG & Co.
InventorSandor Palffy
Life of this patent
Estimating the term…
Abstract
With one or several pressure streams projected at an acute angle (.alpha.) in relation to the surface to be processed, shearing forces can be reached that are high enough to move solid particles and/or fluid media and thus make it easier to suck them away. The recognition of this fact is used in a delivery/suction nozzle arrangement together with the per se known Coanda effect. The invention may be used with all fluid media, preferably for cleaning practicable and passage surfaces; also for drying and/or degassing surfaces, as well as for industrial processes, in particular substance separation processes.
Claims11
A nozzle apparatus for the positive intake and removal of at least one of solid particles and flow media, comprising a first nozzle connected to a pressure source for generating a pressure flow from said first nozzle;
- a second nozzle connected to a vacuum source for generating a suction flow into said second nozzle, each of said first and second nozzles having a wall which together form a smooth, generally continuous surface for generating a Coanda effect in the pressure flow, said first and second nozzles being oriented to direct the respective flow along said continuous surface and being spaced by a nozzle mouth, said second nozzle being oriented with respect to said first nozzle such that the pressure flow from said first nozzle enters said second nozzle through the Coanda effect generated by said pressure flow;
- and means located proximate said nozzle mouth for generating a partial disruption to the Coanda effect at the first nozzle to generate a turbulent flow in said pressure flow in the region of the nozzle mouth to engulf said at least one of said solid particles and flow media exterior to the nozzle mouth and convey said engulfed particles and flow media towards said second nozzle for collection.
Dependencies are inferred from the claim text.