Fluid sprinkling – spraying – and diffusing – Distributor continuously moves relative to support during... – Multiple distributors supported for relative motion or on...
Patent
1992-10-26
1994-07-12
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Distributor continuously moves relative to support during...
Multiple distributors supported for relative motion or on...
239252, 239261, B05B 306, B05B 308
Patent
active
053280970
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a rotor nozzle for a high-pressure cleaning device comprising a cylindrical casing having in a front wall a pot-shaped recess with a central opening therein, a nozzle body with a bore extending through it, the nozzle body being supported at a spherical end in the pot-shaped recess, extending in the longitudinal direction over part of the casing and having an outside diameter which is smaller than the inside diameter of the casing, and an inlet for a liquid opening tangentially into the casing and causing the liquid to rotate about the longitudinal axis in the casing so that the nozzle body rotates together with the rotating liquid and when doing so bears with a bearing surface at its circumference on the inside wall of the casing with the longitudinal axis of the nozzle body at an incline to the longitudinal axis of the casing.
In high-pressure cleaning devices and other spraying devices which produce a jet rotating on a conical area opening in the direction of the jet, various driving possibilities are known for generating such a moving jet in the rotor nozzle.
In a method which involves relatively high mechanical expenditure, provision is made for a rotor to be mounted in a casing for rotation about the longitudinal axis of the casing and to be driven by the jet of liquid entering the casing. A nozzle body mounted in the casing likewise for rotation about the longitudinal axis of the casing and at an incline to the longitudinal axis is driven via a gearing, for example, a toothed gearing (EP-A2-153129). Use of a toothed gearing involves considerable structural expenditure and also there is the danger that with continuous use, the meshing gear parts will only have a short working life as a result of wear.
It is also known to avoid the gearing in such a construction, in principle, by the rotor itself carrying a nozzle channel extending at an incline (German patent 34 19 964). This construction also requires mounting of the rotor on both sides, which may be susceptible to failure; also sealing problems may occur on the outlet side, in particular, when used in high-pressure cleaning devices.
For this reason, elongated pressing members mounted in pot-shaped recesses and driven by a rotor mounted in the casing about the longitudinal axis thereof are used in further known rotor nozzles (German patent 36 23 368). In this construction, sealing problems are avoided in the outlet area, but the expenditure involved is still relatively high as a rotatable rotor has to be provided in addition to the nozzle body mounted in a pot-shaped recess.
In a construction known from German utility model 89 09 876, a rotor mounted for rotation about the longitudinal axis of the casing is avoided by rotor blades being formed on the nozzle body itself and a jet of liquid which leads centrally and axially into the casing striking these. The nozzle body rolls off the inside surface of the casing under the influence of this central jet and when doing so the outer circumference of the nozzle body which is provided with a toothed rim preferably meshes with a toothed rim on the inside wall of the casing. This construction is also relatively elaborate owing to the necessity for the rotor blades and the toothed rims.
A structurally simple and yet properly functioning rotor nozzle is known from German published patent application 31 50 879. In this construction a nozzle body provided in a pot-shaped support in the casing is made to rotate on a conical area by being taken along by a column of liquid rotating about the longitudinal axis in the interior of the casing. The column of liquid is made to rotate about the longitudinal axis by the liquid being introduced tangentially into the interior of the casing. However, difficulties arise in this construction when this rotor nozzle is to be supplied with liquid under high pressure. For, the column of liquid rotating about the longitudinal axis acts in particular in the front region of the nozzle body in which the latter is mounted in the central, pot-shaped recess as rota
REFERENCES:
patent: 2854283 (1958-09-01), Hruby, Jr.
patent: 3126025 (1964-03-01), Aubert et al.
patent: 4073438 (1978-02-01), Meyer
patent: 4747544 (1988-05-01), Kranzle
patent: 4989786 (1991-02-01), Kranzle et al.
Dellert Gerhard
Wesch Johann G.
Alfred Karcher GmbH & Co.
Kashnikow Andres
Lipsitz Barry R.
Morris Lesley D.
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