Fluid sprinkling – spraying – and diffusing – Distributor continuously moves relative to support during... – Spray fluid motor drive means
Reexamination Certificate
1999-07-20
2001-06-26
Douglas, Lisa Ann (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Distributor continuously moves relative to support during...
Spray fluid motor drive means
C239S240000, C239S263000, C239S264000, C239S381000
Reexamination Certificate
active
06250566
ABSTRACT:
The present invention relates to a rotor nozzle, in particular for high-pressure cleaning apparatus, comprising a nozzle housing which has an inlet opening at its one axial end and an outlet opening for liquid at the other end, also with a rotationally driven rotor arranged in a swirl chamber of the nozzle housing inclined relative to the longitudinal axis of the swirl chamber and supported at the inner wall of the swirl chamber, with the rotor having a nozzle region at its end pointing towards the outlet opening and supported in a cup bearing and an inflow opening at the opposite end.
Such rotor noble eare basically known and serve to expel a conical liquid jet, in particular at high pressure.
BRIEF SUMMARY OF THE INVENTION
It is the problem (object) underlying the invention to provide a rotor nozzle of the initially named kind, which can be used as universally as possible.
In order to satisfy this object there is provided an apparatus of the initially named kind which is characterized in that a nozzle member and a distributor member are arranged in the nozzle housing and are rotatable relative to one another, with the distributor member having at least one distributor cutout communicating with the inlet opening, via which functional openings formed in the nozzle member can be controlled or selected, with the functional openings respectively communicating with the swirl chamber or with at least one auxiliary outlet of the nozzle housing.
In accordance with the invention, a changeover can be made between a rotational operation, in which the swirl chamber is fed with liquid and at least one additional special jet operation, simply by rotating the nozzle member relative to the distributor member.
In accordance with a preferred embodiment of the invention a plurality of functional openings standing in communication with the auxiliary outlet is provided in the nozzle member and are each formed as a nozzle, in particular as a point jet nozzle, flat jet nozzle or low pressure nozzle.
In this way a rotor nozzle of particularly universal utility is provided in which it is possible to switch between the individual special jet operating types by a simple rotary movement. Since the nozzle member is itself provided with nozzles, no separate nozzle elements are required, whereby the layout of the rotor nozzle is simplified.
In accordance with a further preferred embodiment, the nozzle member and/or the distributor member are made in one piece of ceramic material and preferably manufactured by injection molding.
In this manner the nozzle member and/or the distributor member can be made simply and at comparatively favorable cost, with the manufacture by means of injection molding making it possible to manufacture the special nozzle forms with functional openings in the nozzle member in a particularly simple manner. The use of ceramic material thereby results in particularly low wear components.
In accordance with a further preferred embodiment the nozzle member and the distributor member are arranged in such a way that they contact one another with preferably flat ground side surfaces, which are polished to high gloss.
The contacting regions of the side surfaces take care of the required seal in the region of the distributor cutout and of the respectively selected functional opening, in particular when using ceramic as the material for the nozzle member and the distributor member, so that additional measures for the sealing in these regions can be omitted. Furthermore, limescale deposits, which in any event adhere poorly to ceramic material, else scraped off by the edges of the distributor member bounding the distributor cutout when the distributor member and the nozzle member are rotated relative to one another. The sealing action of the mutually contacting side surfaces is thus preserved even without additional cleaning measures, so that long working lives can be achieved without interruptions caused by cleaning. Furthermore, the provision of such contact surfaces serves for a certain tightness during the mutual rotation of the nozzle member and the distributor member, so that the rotor nozzle cannot adjust automatically. Moreover, the user is given a good feeling during the setting operation, without it being necessary to make the nozzle member and the distributor member so that they latch in the respective functional position.
In accordance with a further preferred embodiment of the invention, provision is made that at least the distributor cutout or the functional openings is or are each surrounded by a sealing bead, which is preferably made in one piece with the nozzle member or the distributor member respectively. Through the provision of such sealing beads, the contact surface between the distributor plate and the nozzle plate is made smaller, whereby the mutual rotation of the nozzle plate and the distributor plate is made easier, but the required seal is nevertheless ensured.
In accordance with a further preferred embodiment of the invention, at least one leakage channel is formed in the side of the nozzle member confronting the distributor member, leads to the functional opening standing in communication with the swirl chamber and communicates with the distributor cutout, at least in an intermediate position of the distributor member.
In this way a particularly simply realized measure is provided for the avoidance of a liquid blockage, which could otherwise arise when the distributor cutout is in an intermediate position between two functional openings.
In accordance with a further preferred embodiment of the invention, the distributor cutout is dimensioned such that it stands in communication with at least one functional opening and/or a leakage channel in every position.
In this connection, in the case of a plurality of functional openings, the provision of a leakage channel between the functional openings can be omitted, since in this region no intermediate positions exist without a possibility of the liquid flowing away.
Further preferred embodiments of the invention are set forth in the subordinate claims, in the description and also in the drawing,
REFERENCES:
patent: 4989786 (1991-02-01), Kranzle et al.
patent: 5328097 (1994-07-01), Wesch et al.
patent: 5332155 (1994-07-01), Jager
patent: 5551635 (1996-09-01), Jager
patent: 5598975 (1997-02-01), Jager
patent: 5722592 (1998-03-01), Jager
patent: 5941458 (1999-08-01), Hartmann
patent: 4013446C1 (1991-05-01), None
patent: 4133973A1 (1992-04-01), None
patent: 4300599A1 (1994-02-01), None
patent: 4319743A1 (1994-12-01), None
patent: 296 19 572 U1 (1997-10-01), None
patent: 19709120A1 (1998-09-01), None
patent: WO 91/16989 (1991-11-01), None
Douglas Lisa Ann
Townsend and Townsend / and Crew LLP
LandOfFree
Rotor nozzle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotor nozzle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotor nozzle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2503103