Fluid sprinkling – spraying – and diffusing – Flow deflecting or rotation controlling means – Fluid rotation inducing means upstream of outlet
Patent
1999-06-09
2000-11-07
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Flow deflecting or rotation controlling means
Fluid rotation inducing means upstream of outlet
239451, 239456, 239494, 239497, 285298, B05B 134
Patent
active
061423904
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a nozzle assembly for spray heads which may be used for various spraying applications.
BACKGROUND ART
There are many known types of spray heads which can be used for various spraying applications. Different types of nozzles provide a different type of spray emanating therefrom. Most nozzles provide a spray having the shape of a cone whereby the water or liquid being sprayed forms the outside surface of the cone only. Some nozzles are adjustable to provide for finer or coarse droplets of spray as required.
Even though such described nozzles are used widely, one major disadvantage is that the spray only forms the outside periphery of a cone. Therefore when spraying the water or liquid, a centre target area is left almost dry which is commonly known as a hollow cone.
One known type of spray head as described in EPA353984 by Yap Yoen Cheng, provides a spray which has an even distribution of droplets throughout the middle of the cone. This particular nozzle of this spray head uses an outer disc having a plurality of nozzle chambers in order to produce the even type spray,
Disadvantages of this prior art spray head are that it is complicated to manufacture, difficult to adjust the cone angle of the spray without wetting the fingers and the nozzle disc must be rotated numerous times to effect adjustment of the spray cone angle. Moreover, the helical movement along the vortex of the internal chamber cannot be pre-determined with accuracy in relation to pressure and spray angle. Furthermore, the spray head gradually works off its desired optimum spray angle due to the amount of pressure applied to the central chamber.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an improved spray head which substantially overcomes or ameliorates the abovementioned disadvantages.
According to one aspect of the present invention there is provided a nozzle assembly for a spray head having a tubular body or housing that has an inlet thereto and an outlet therefrom, said nozzle assembly comprising a nozzle member and a core member, said nozzle member having a central chamber adapted to be in fluid communication with the inlet of the spray head and a plurality of outer chambers in communication with the central chamber and adapted to be in fluid communication with the outlet of the spray head, said nozzle member and/or said core member having means for spacing the core member with respect to the nozzle member.
Preferably, the core member is removable and replaceable so that the height of the central chamber may be varied by using different core members.
BRIEF DESCRIPTION OF THE DRAWINGS
In order that the invention may be more readily understood and put into practical effect, reference will now be made to the accompanying drawings in which:
FIG. 1 is an exploded side view of a spray head incorporating a nozzle according to a first embodiment of the invention,
FIG. 2 is a partial side view of the nozzle of FIG. 1 showing a preferred profile of the outer chamber,
FIG. 3 is a partial side view of the nozzle of FIG. 1 showing a second preferred profile of the outer chamber,
FIG. 4 is a partial side view of the nozzle of FIG. 1 showing a third preferred profile of the outer chamber,
FIG. 5 is a partial side view of the nozzle of FIG. 1 showing a fourth preferred profile of the outer chamber,
FIG. 6 is a plan view of a nozzle member according to the first embodiment of the invention,
FIG. 7 is a plan view of a nozzle member according to the second embodiment of the invention,
FIG. 8 is a plan view of a nozzle member according to the third embodiment of the invention,
FIG. 9 is a plan view of a nozzle member according to the fourth embodiment of the invention, and
FIG. 10 is a plan view of a core member for use with the nozzle member of FIG. 9.
MODES FOR CARRYING OUT THE INVENTION
The spray head shown in FIG. 1 includes a tubular body or housing 11 of any convenient type or configuration which has an inlet 13 thereto and a plurality of outlets 14 theref
REFERENCES:
patent: 1033603 (1912-07-01), Manly
patent: 2511380 (1950-06-01), Stadler
patent: 3526367 (1970-09-01), Trihey
patent: 5044560 (1991-09-01), Cheng
Nordstrom Lindsay Erik
Nordstrom Philip Clayton
Evans Robin O.
Exell Trading Pty Limited
Kashnikow Andres
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