Fluid sprinkling – spraying – and diffusing – Slinger or splasher; or deflector rotated relative to effluent – Nozzle delivers fluid to deflector
Patent
1997-04-10
1999-11-16
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Slinger or splasher; or deflector rotated relative to effluent
Nozzle delivers fluid to deflector
239382, B05B 304
Patent
active
059842040
DESCRIPTION:
BRIEF SUMMARY
This invention relates to sprinkler devices for dispersing water or other liquids.
It is well known to use sprinkler devices to distribute water across a cultivated area. However, known sprinklers are not entirely satisfactory. Various types of known sprinklers suffer from one or more of disadvantages such as wind drift, excessive evaporation of water while airborne, leaving areas within the overall spray pattern unwatered, and damage to tender crops from water jet impact.
It is also known to use fixed systems of sprinklers for fire suppression, but to date no such system has coped satisfactorily with a wide range of fire risks including flammable liquids.
According to the present invention a sprinkler device comprises a liquid inlet and at least one liquid outlet joined by a flow passage, the flow passage being constructed to produce a substantially laminar fluid flow at the outlet to cause a substantially laminar flow liquid jet to issue from the outlet, and a rotor having blades positioned to intercept the boundary layer of said liquid jet.
The invention also provides systems for irrigation, fire suppression, snow generation and water purification.
Preferred features of the invention will be apparent from the following description and from the claims.
Embodiments of the invention will now be described, by way of example, with reference to the drawings, in which:
FIG. 1 is a cross-sectional side view of a sprinkler device forming a first embodiment of the invention;
FIG. 2 is a plan view of the sprinkler device of FIG. 1;
FIG. 3 illustrates in detail the geometry of part of the device;
FIG. 4A, 4B and 4C illustrates different modes of operation of the device;
FIG. 5 is a schematic cross-section of a second embodiment;
FIG. 6 is a perspective view of a rotor assembly used in the device of FIG. 5;
FIGS. 7 and 8 are schematic cross-sections of a third embodiment; and
FIG. 9 is a cross-section of a further embodiment.
Referring particularly to FIG. 1, a sprinkler device comprises a through conduit 10 for connection in a supply line of hose pipe or the like. A cylindrical housing 12 extends from the conduit 10 and defines a water channel 14 communicating with the conduit 10.
The water channel 14 divides into a number of channels 16 (suitably two, four or six in number) which are circumferentially equispaced around the housing 12. Each channel 16 converges and curves, as will be described in greater detail below, to terminate in an outlet 18.
A sleeve 20 is rotatably mounted on the housing 10. The sleeve 20 is provided with apertures 22 positioned such that rotation of the sleeve 20 relative to the housing opens or blocks selected ones of the outlets 18. As best seen in FIG. 2, the sleeve 20 may be provided with a spring arm 24 which can be manually positioned in a selected slot 26 of an arcuate block 28 secured to the conduit 10, to set the desired rotational position of the sleeve 20.
A block 28 is screwed to the top of the sleeve 20 and mounts an upstanding pin 30 which acts as a rotational bearing for a rotor assembly 32. The rotor assembly 32 comprises radial arms 34 (suitably two, four or six in number) each having an outer drop arm 36 carrying a blade 38. The blade 38 has a top edge 40 which is parallel to the path of water jets 42 exiting from the outlets 18, and the position of the top edge with respect to the water jets 42 can be adjusted by screwing the cap 28 in and out with respect to the sleeve 20.
An important feature of the present invention is that the water flow through the channels 14 and 16 to the outlets 18 is laminar. Referring now also to FIG. 3, each of the channels 16 has a vertically extending, converging section 16A, a transitional section 16B, a converging section 16C and a parallel exit section 16D. The transition section 16B is defined by surfaces 44 which are circular arcs about a point 48. This geometry causes water flowing from the conduit 10 to be accelerated while flowing to the outlet 18 in laminar flow. The sections 16C, 16D assist in restoring smooth laminar flow if any di
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Douglas Lisa Ann
Harris Gerry
Kashnikow Andres
LandOfFree
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