Fluid sprinkling – spraying – and diffusing – With cleaning means – drip collecting – waste disposal or soil... – Nozzle cleaner – flusher or drainer
Patent
1995-05-02
1998-03-24
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
With cleaning means, drip collecting, waste disposal or soil...
Nozzle cleaner, flusher or drainer
23953312, 239602, B05B 1502
Patent
active
057303614
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a national phase of PCT/EP93/02895 filed 20 Oct. 1993 and based, in turn, on Austrian national application A2183/92 filed 4 Nov. 1992 under the International Convention.
FIELD OF THE INVENTION
My present invention relates to a shower head with a spray plate having perforations for the passage of water and mounted in a housing.
BACKGROUND OF THE INVENTION
In order to obtain a water jet which is pleasant to the skin with a shower head, the spray plate of the shower head can have many small water outlet openings. There is a problem with such shower heads because due to calcification or contamination the water passages can become narrowed or completely clogged, which results in uneven water jets and incorrect alignment of individual water jets.
Up to now this problem was solved mostly by chemical means, whereby either the shower head had to be kept for a long time in a decalcifying solution, or correspondingly more aggressive chemicals had to be used. These procedures are time consuming, are damaging especially to the plastic components of the shower head and are environmentally unsafe. Furthermore in cases of advanced calcification is not possible to remove the deposits completely. A mechanical approach is also known, wherein pins arranged on a plate are pressed from time to time through the openings in the spray plate, thereby clearing these openings. If the pin-bearing plate is made an integral part of the shower head, the volume and weight of the shower head are increased and the device for the introduction of the pins into the openings of the spray plate also becomes subject to contamination and calcification. Due to the hardness of the calcification and the fineness of the openings, high requirements have to be met by the material of the pins, which in spite of a very small diameter are not allowed to bend.
OBJECT OF THE INVENTION
It is the object of the present invention to provide a shower head with an improved way of freeing the outlet of contamination and calcium deposits in a simple, quick and environmentally friendly manner.
SUMMARY OF THE INVENTION
This object is attained by providing the spray plate with a further plate having nozzles coaxial to the water passage openings and made of an elastic material, whereby the nozzles have exit openings which are smaller than the water passage openings. The fineness of the jets is given by the size of the exit openings of the nozzles and the water passage openings in the spray plate can be selected so big that they are no longer clogged by contaminations or calcium deposits. In order to clean the nozzles made of an elastic material, they are bent back and forth several times, so that the hard deposits on the inner nozzle walls crack up and are rinsed out by the passing water jet. The back-and-forth bending of the nozzles can be done by hand or also by using the shower head with the projecting nozzles in the manner of a brush for body massages.
Advantageously in the shower head of the invention the further plate with the nozzles is made in one piece and of elastic material. It is simple to produce and avoids sealing problems.
Further each nozzle has an inner diameter which is bigger then the thickness of its walls, this way permitting an easy bending of the nozzle.
Furthermore according to a preferred embodiment the inner diameter of the nozzles widens under water pressure, so that already due to the passage of the water, when the valve is fully opened, the hard contaminations and calcium deposits crack and split off due to the expansion of the inner nozzle wall.
BRIEF DESCRIPTION OF THE DRAWING
The above and other objects, features, and advantages will become more readily apparent from the following description, reference being made to the accompanying drawing in which:
FIG. 1 is a cross sectional view through a shower head according to the invention;
FIG. 2 is a detail view of a portion of the elastic plate showing one of the nozzles thereof;
FIG. 2A-2C are cross sectional views ta
REFERENCES:
patent: 2402741 (1946-06-01), Draviner
patent: 5172862 (1992-12-01), Heimann et al.
Dubno Herbert
Ganey Steven J.
Ideal-Standard GmbH
Kashnikow Andres
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