DE2852042A1 - DEVICE FOR DELIVERING AT LEAST ONE FLUID BEAM - Google Patents

Description

2852Π / .2 L-

629

Device for delivering at least one fluid jet

The invention relates to a device according to the preamble of claim 1.

A fluid jet or a gas jet is referred to here as a fluid jet Understood. It is preferably a liquid jet. The jet can be used as a spray jet under one certain spray fan angle leave the device. The beam can pulsate or oscillate. The one from the device The emerging jet can break up into small droplets of a certain density and distribution. But it can also be act a smooth uninterrupted beam. The throughput rate of the beams can differ significantly from one another.

The device can be used for a wide variety of purposes, such as are listed in DE-OS 2543378. For the specialist it is clear that the fields of application listed here are not exhaustive. The device according to the invention is particularly suitable as a spray and / or jet device for water for cleaning and / or massage purposes. In particular, acts they are nozzles for vehicles for cleaning the windshield moistened with the nozzle by means of known windshield wipers.

However, they can also advantageously be function heads be mouth, body or face cleansing showers.

It is readily apparent to a person skilled in the art that the connection of the fluid source, in particular the water source, to the device depends largely on its use. So are the

the
Conclusions for \ the device for spraying windshields is fundamentally designed differently than for mouth, body or face wash showers.

03Q02A / 0272

-_- & -_ ■

This of course also applies to the size and the external shape of the device as well as to the design of the functional part and the required flow rate and / or formation of the fluid jet, depending on the intended use.

There are devices of the type mentioned, in particular for body and oral showers and as nozzles for windshields known. The use of fluidic oscillators has proven to be particularly advantageous here, depending on the application, the frequency of the fluid jet and the droplet size and distribution in which it exits the device breaks, are chosen differently.

In the known comparable devices of the initially However, greater manufacturing difficulties have arisen especially when simple and traded inexpensive mass production.

In this context, DE-OS 2724299 has already become known, with which the well-known multi-part layer construction was abandoned from individual parts glued together. Instead, it was proposed to use a flat functional part in insert a gap in a housing part. In order to achieve a tight closure of the functional surface on the functional part To get at the one gap surface of the housing part, the functional part had to have a slight curvature due to its elastic deformability when it is pushed into the housing gap, it is forced into an elongated shape, whereby the functional surface comes to rest tightly on the facing gap surface of the housing.

It is clear to the person skilled in the art that such an assembly technique _# as it has become known for the production of oral irrigators and nozzles for vehicle windshield washers, demands considerable requirements on the permissible tolerances and the elastic properties of the parts, which can only be achieved with considerable

Ö3Q024 / ~ Q272

2852Π42

wall must be adhered to. Another decisive disadvantage of the known assembly technology is that when changed Requirements for the spray jet with regard to its spray jet angle and / or its droplet size or droplet distribution and / or the flow rate the individual parts to be assembled have completely different shapes, so that, for example, the functional part or the housing part cannot easily be used for spray devices with different spray characteristics is usable.

Finally, another point is that the known devices only emit a specific spray jet at a time. However, it has been found, e.g. with oral irrigators, that On the one hand, an oscillating jet is particularly important for gum massage, but it is one for optimal cleaning simple non-pulsating jet cheaper! For the

-. ,,., ..,. . . . possibly

For optimal oral hygiene, it was previously necessary to \ use two different shower heads.

The object of the invention is therefore to provide a device for dispensing at least one fluid jet that is used for mass production is particularly suitable, and where one and the same housing part can be used for different functional parts that emit different spray jets. A way should also be shown with which a production is possible without major tolerance difficulties. In particular, the functional parts should not have specific curvatures have and only lead to a tight surface closure due to their elastic properties. According to the invention

even
It should thus be possible to produce a spray jet device without particular elastic properties and thus certain plastic materials in a precisely defined composition playing an essential role. Finally, the device according to the invention should be suitable for the delivery of two fluid jets without significant additional effort,

4th
030024/0272

28520Λ2

^w whether the fluid jets can have different designs (oscillating fluid jet, simple smooth jet) and a simple control part can be provided without significant additional effort, with which one of the two jets can be switched off or off or with the alternate only one or only the other beam can be switched on.

According to the invention, the object is achieved with the characterizing features of claim 1, 6, 12 or 14 solved.

Advantageous designs result from the features of the associated subclaims and the following description of exemplary embodiments which are shown schematically in a drawing. Herein shows:

Fig. 1 is a plan view of a functional part of an inventive Contraption,

Fig. 2 shows a housing part in plan view for receiving the Functional part according to Fig. 1,

Fig. 3 is a longitudinal section through the assembled from the wedges of FIGS. 1 and 2 device according to the Invention,

FIG. 4 shows a section along the lines IV - IV in FIG. 3,

Fig. 5, functional parts of further device according to the invention

5a

in front views,

Fig. 6, longitudinal sections through the functional parts according to Fig. 5, ^6a and 5a,

7 shows a longitudinal section through a device according to the invention with a functional part according to FIGS. 5 and 5a,

030024/0272

-β-

8 shows an end view of a device according to the invention with a functional part according to FIGS. 6 and 6a,

Fig. 9 end and side views of a particular Substituted ⁿ staltung the apparatus of Fig. 7 or 8,

11 is a perspective view of another Device according to the invention in an exploded view,

12 shows a perspective illustration of a device according to the invention in the assembled state and _{still weiteunt ι a ren}

p. ₁₃ inventive devices for 2 fluid jets and 14 len that can be switched on alternately.

The invention is not limited to the exemplary embodiments; the person skilled in the art can obtain a variety of these within the scope of the invention lying suggestions.

Fig. 1 shows a Ylach, platelet-shaped functional element with a main nozzle 1, an interaction chamber 2, two return ducts 3 and 4 and an outlet area 5. Through this a known oscillator is determined, the function of which need not be described in detail here.

The functional element 1 fits into a housing part 6, the flat bottom 7 of which is surrounded by walls 8 like a horseshoe. At the rear At the end, the housing part has a neck-shaped connection for a rubber hose or the like. It is clear that the Connection 9 can have any other shape for supplying a fluid medium, in particular water. The exit of the The connection 9 in the base 7 of the housing 6 is denoted by 10 in FIG. 2.

030024/0272

For the tight connection of the functional part 1 to the bottom 7, the functional part has along its channels 3, 4, the Chamber 2, the nozzle 1 and the outlet area 5 delimiting rib-shaped walls weld beads 11, which in corresponding Grip weld grooves 12 in the bottom 7. By using a known ultrasonic welding, the weld Bulges 11 in the grooves 12, whereby a tight connection of the functional part 1 to the housing part 6 is ensured. It is clear that the two parts 1 and 6 are advantageously made of plastic for this purpose, which are manufactured in injection molds are.

The functional part 1 has such a depth that this can accommodate different configurations that are in front mainly differ from one another in depth, so that functional parts with the same external dimensions in the housing part can be used, which contain different configurations, in order to thereby lead to different beam configurations come.

FIGS. 5 to 8 show a further approach according to the invention. In FIGS. 5 and 5a, the functional part II ¹ shown in the front view and in longitudinal section is designed as a plate-shaped component wedge-shaped, which has the functional surface to be sealed on its one broad side,

en,
the recess 12 has, for example, according to FIG. A further wedge-shaped functional part 12 is shown in FIGS. 6 and 6a, the two opposite broad sides of which are designed as functional surfaces and each have recess 14, 15 for forming an output beam. In the example, these recesses are different from one another, so that two differently designed beams are emitted through these recesses. For example, the lower recess 14 according to FIG. 1 can contain a fluidic oscillator, while the upper recess 15 only contains one

- 7th
030024/0272

Nozzle opening for the delivery of a simple smooth jet without Spray effect generated. The situation can also be reversed. Both recesses can also each have an oscillator of different shapes, etc.

FIGS. 7 to 10 show examples of housing parts for receiving the wedge-shaped functional parts according to FIGS. 5 and 6 shown, which can be wedge-shaped on one or both sides. 7 shows a housing part 16 with a wedge-shaped gap 17 for receiving a wedge-shaped functional part 11 according to FIGS. 5 and 5a, and FIG. 8 shows a housing part 18 for receiving a wedge-shaped functional part 12 according to FIGS. 6 and 6a.

It is clear that the slope of the wedge surfaces are chosen so that after the functional parts have been pushed into the housing gaps, the functional surfaces are sealed from the housing gap surfaces be completed. So that the fluid medium in a formation of the functional element 12 'according to FIGS. 6 and 6a at the same time is connected to both functional surfaces 14 and 15, the functional element 12 'at its rear end has a through opening 19, which in the inserted position in the Housing part 18 is connected to the inflow of the fluid medium via the neck-shaped connection 9. The opening 19 is like this designed or has such a diameter that in the inserted position of the functional part 12 a connection to the opening in the connection 9 is ensured.

Correspondingly, the recess 12 of the wedge-shaped functional part is also designed with the one-sided functional surface that, in the assembled position, the opening 9 of the neck 9 securely connects to the recess 12.

9 and 10 show a variant of a housing part for receiving a wedge-shaped functional part with functional surfaces on one or both sides, the longitudinal side slots 20, 21 has, whereby elastic properties of the housing part

- 8 -030024/0272

used to firmly wedge the inserted functional part and thus to seal the functional surface or surfaces tightly can be.

Fig. 11 shows a further solution according to the invention, in which the functional part 22 is designed as a cover of an approximately shoe-shaped Housing part 23 is formed. The functional surface with a recess 24 is located in the underside of the functional part 22 and is tightly closed by resting on the bottom surface 25 of the housing part 23. For this the functional part 22 has a circumferential groove 26, while the edge 27 angled inward at its upper end of the housing part snaps into the groove 26 in the pressed-in state of the functional part 22. The conditions are like that here chosen that by elastic deformations of the functional part and / or the housing part in the snapped-in position of the functional part 22, the bottom surface 25 seals the recess 24 tightly. So can the functional surface with the recesses 24 and / or the bottom surface can each be designed to be slightly eccentric, due to the elastic properties the parts are stretched in the assembly position in a flat plane that this creates a seal of the Functional area is ensured.

The advantage of this embodiment according to FIG. 11 is besides the light one Assembly by stamping tools that the functional part 22 can have a thickness, thus depending on the desired training of the fluid jet to be emitted to the environment into the Functional surface recesses of different depths can be introduced. With a housing part can thus be used different functional parts with the same external dimensions but different recesses on their functional surfaces different spray devices can be obtained.

It is clear that the strength of the one or both sides wedge conveying trained functional parts according to FIGS. 5 and 6 can also have such a strength from the outset that

030024/0 ~ 2-72

- —9 ·· -

the recesses on one or both broad sides different May have depths, so that here too without changes to the housing part to accommodate a wedge-shaped Functional parts, depending on the selected depth of the recess in its functional surface received different spray devices can be.

In Fig. 11 is to fix the functional part 22 in the housing part 23 on opposite wall parts each have a rib 28 which is inserted into corresponding recesses 29 on the functional part 22 intervene.

Fig. 12 shows a further solution according to the invention, in which the functional part with recesses 31 in its functional surface together with a cover part 32 form a cross-sectionally round or oval body which is conical towards the rear tapered and, for the tight closure of the functional surface, into a sleeve-shaped part 33 by the mating surface on the cover part 32 is inserted, which tapers conically on the inside accordingly backwards.

On the cover part 32 there is an opening 34 at its rear end which, in the assembled position, connects to the opening in the Neck-shaped connection 9 for the fluid medium connects. To fix the two parts 30 and 32 to one another, the Cover part has a rib or knob 35 which engages in an adapted recess in the functional part 30 or vice versa.

13 and 14 show two solutions for functional parts which have functional surfaces on both sides and which alternate the one functional surface is connected to the fluid medium and at the same time the other functional surface can be shut off from the fluid medium.

13 is a wedge-shaped functional part and a housing part with a correspondingly wedge-shaped structure

10
030024/0272

Housing slot corresponding to one or more of FIG. 5
to 10. To switch the
Functional surfaces there is a sleeve 37 in the neck-shaped connection 36, which has two openings at its upper end
38 and 39 has and at its lower end as a connection
is designed for a hose. It is clear that this connection can also be designed as a plug for rigid tubular leads.

In the upper part of the housing part there is a round recess 40 in which the upper closed end of the sleeve 37 is mounted. The position of the openings 38 and 39 in the sleeve 37 are selected so that one opening 39 adjoins the upper functional surface 41 of the functional part 42 in a certain first rotational position of the housing part rotatable relative to the sleeve 37, while the other opening is in this rotational position to the lower functional surface 43 of the
Functional part 42 is not connected. In a second rotational position, only the other opening 38 is on the lower one
Functional surface 43 connected, while the opening 39 is blocked off from the upper functional surface. In the present case, the two rotational positions are 180 ° apart. ¹ It is clear that the angle can also be smaller than 180 °, as is shown in FIG. 14, for example.

This is a solution in which a functional part 1 is assumed that is welded to a bottom surface by ultrasound. In Fig. 14, the plate-shaped functional part 44 on both of its broad sides

Functional surfaces 45 and 46, one of which. Correspondingly Fig. 1 and the other can be designed in the same or in a different way, as already in connection above with 6 and 6 a is described.

The housing part 47 is designed in accordance with FIGS. 2 to 4 and has a bottom surface similar to that shown in FIG

- 11 .030024 / 0272

ßodenflache corresponds. By inserting the functional part in the housing part, the welding ribs on the functional part according to FIG. 1 engage in the welding grooves in the bottom surface of the housing part according to FIG. In addition, a cover part 48 is provided, which corresponds to the recess 45 ' contains special weld seams on the upper functional surface, into which the associated welding ribs on the functional surface intervention. Ultrasonic welding is used on this Way the recesses 45 and 46 in both functional surfaces opposite the bottom surface on the housing part and opposite the The end surface on the cover part 48 is tightly closed.

For the optional connection of only one connection surface 45 or 46 to the fluid medium, a connection 9 is provided in the neck Stored tube 49, which at its upper end contains two openings 50 and 51, of which only the upper opening 50 in a first rotary position on the upper functional surface and in a second rotational position only the lower opening 51

is connected to the lower functional surface. By twisting of the tube 49 in the case of the example by 45 ° can alternately only the upper or only the lower functional surface the fluid medium can be connected, which in the example is supplied via a rubber hose attached to the neck-shaped Terminal 9 attacks. Here, too, the connection 9 can be designed as a plug connection for a rigid connecting pipe.

To rotate the tube 49, a pin 52 engages it, which engages through an annular gap 53 in connection 9 and outside carries an actuating attachment 54 which is actuated by hand leaves. It is clear that the person skilled in the art offers a variety of possible solutions to the functional surface the functional parts according to FIGS. 13 and 14 to be connected alternately to the fluid medium. This also includes equivalent solutions, with which only one functional surface can optionally be switched off or on, while the other functional surface

030024/0272

remains permanently connected to the fluid medium. In the Examples according to FIGS. 13 and 14 have the openings 55 (FIG. 13) and 56 (FIG. 14) in the functional parts 42 and 44 has enough play for the tubes 37 and 49 to pass through.

In Fig. 12a is a variant of the embodiment according to the invention shown according to Fig. 12, in which the wedge-shaped insert body is formed in three parts, namely with a middle functional part 30 ', which is similar to the execution 6 and 6a, two broad-sided functional surfaces with an upper recess 31 ″ and a lower recess 31 has for the delivery of two beams. The functional surfaces are covered by two cover parts 32 * and 32 ", which, together with the central functional part, form the wedge-shaped slide-in body, which is correspondingly wedge-shaped formed tubular housing part 33 according to FIG. 12 can be inserted. At the rear end of the slide-in body a through opening is provided, which penetrates all three individual parts and in the housing to the inner öffmungides Connection 9 connects. To fix the three individual parts of the slide-in unit during assembly Nubs and ribs 35 'are provided which snap into associated grooves. The insertion body can be designed so that the functional surfaces of the functional part 30 'run parallel and only the side surfaces with the top surfaces adjoining on both sides together form a cone shape. It it is clear that here, too, the middle functional plate has such a height that recesses on one or both sides Desired depth for one or two jets of different design and for different flow rates can be provided. It is also clear that the embodiment according to FIG. 12a corresponding to the embodiment 13 or can also be designed to be switchable.

030024/0272

- / it-

Blank page

Claims (14)

Minchen, 11/30/1978 TPl-pd-rs 629 Knorr-Bremse-Bowles Fluidics GmbH Expectations Device for dispensing at least one fluid jet consisting a housing part with a connection for a pressurized fluid source and a functional part held by the housing part and having at least one broad-sided surface, which, as a functional surface, has at least one recess through which the fluid flows and has a predetermined contour, which apart from an exit slit for the fluid jet from an opposing housing surface sealed off in a current-medium-tight manner is, characterized in that the functional part has a unitary shape with regard to its outer dimensions, which, depending on the selected shape of the recess contour in the functional plane, determines at least one fluid jet Gives shape and / or a certain amount of leakage per unit of time to the environment. 2. Device according to claim 1, characterized in that the sealing housing surface is formed by a bottom surface, which is enclosed in a horseshoe-like manner by three wall sections to form a space that is open at the top and at the end, and the func- with his
tion part of the bottom surface facing functional surface can be inserted into the free housing space, the wall sections of the housing part essentially flush with the top of the functional part. 3 »Device according to claim 1 or 2, characterized in that d @ r that the functional surface with the Bodon surface along / the recess or end faces delimiting recesses ä @ s * functional surface versctivjeift and / or glued ο Ö ~ 3 0 0 h / 0 2-7 2 originally inspected 4. Device according to one of claims 1 to 3, characterized in that that the functional part has functional surfaces on opposite broad sides and on its rear The end contains a through opening for connecting the fluid to the functional surfaces, one of which is functional surface to the bottom surface of the housing and the other functional surface tightly adjoins an overlying cover part. 5. Apparatus according to claim 4, characterized in that the housing part and / or the cover part is a switching part for optionally blocking one of the two functional surfaces from the fluid connection or for blocking one of the two alternately Has functional surfaces of the fluid connection of the other functional surface. 6. Device for dispensing at least one fluid jet consisting of a housing part with a connection for a pressurized fluid source and one held by the housing part Functional part with at least one broad-sided surface, which as a functional surface at least one of the Fluid flowing through recess has a predetermined contour, which apart from an exit gap for the fluid jet is closed fluid-tight by an opposite housing surface, characterized in that the in its strength from the flow outlet end backwards wedge-shaped
tapering, platelet-shaped functional part has at least one partial surface which engages in a correspondingly wedge-shaped housing gap, which tapers in depth from the flow outlet end to the rear, at such a depth that the functional surface is tightly closed off from the opposite housing gap surface. 7. Apparatus according to claim 6, characterized in that each of the opposite two broad sides of the wedge-shaped Functional part is designed as a functional surface, OO Λ Λ "5 i / Oi " 1 *? *% 3 (Jy Ah I U I Ii. at least one broad side of which forms a wedge surface, and that the functional part has a through opening in its rear end for connecting the fluid to both functional surfaces having. 8. Apparatus according to claim 7, characterized in that the housing part is an adjustable switching part for optionally shutting off one of the two functional surfaces from the fluid connection or to alternately shut off one of the two functional surfaces of. the fluid connection at the same time Has connection of the other functional surface to the fluid connection. 9. Apparatus according to claim 4 or 7, characterized in that that the two fluid jets due to the two functional surfaces different dimensions, these associated recesses differ from each other. 10. The device according to claim 9, characterized in that the one functional surface has at least one fluidic oscillator for emitting a pulsating or oscillating fluid jet and the other functional surface has at least one outlet opening for the delivery of a smooth and interrupted fluid jet of a certain direction. 11. The device according to claim 7, characterized in that the housing part for the elastic clamping of the wedge-shaped Functional part is formed slotted along at least one longitudinal side. 12. Device for dispensing at least one fluid jet consisting of a housing part with a connection for a pressurized fluid source and one of the housing part held functional parts with at least one broad-sided surface, which as a functional surface at least one of the 030024/0272 2852Π42 Fluid flowing through recess has a predetermined contour, which apart from an exit gap for the fluid jet is closed off in a fluid-tight manner by an opposite housing surface, characterized in that the functional part snaps into an open housing part which has edge recesses with inwardly bent side edge sections snapped behind on the functional part, the housing part and / or the functional part being elastic in the snapped-in state is deformed in such a way that the functional surface on the functional part rests tightly against the bottom surface of the housing part. 13. The device according to claim 12, characterized in that the bottom surface of the housing part and / or the functional surface of the functional part are convex. 14. Device for dispensing at least one fluid jet consisting of a housing part with a connection for a pressurized fluid source and one of the housing part held functional part with at least one broad-sided surface, which as a functional surface at least one of the Fluid flowing through recess has a predetermined contour, which apart from an exit gap for the fluid jet is closed off in a fluid-tight manner by an opposite housing surface, characterized in that at least the functional part together with a counterpart in common a circular or oval plug-in body in cross-section and a functional surface of in the plane of separation between two parts a resting surface of a counterpart is covered, and that the plug-in body extends backwards from the jet outlet end conically tapered and engages in a correspondingly conically backwardly tapering sleeve-like body, which has a connection for the fluid, the inner opening of which is above an opening in the plug-in part for feeding of the fluid lies in the recesses in the functional surface. 030024/0272 15 »Device according to one of claims 4 to 14, characterized in that the functional part with regard to its external dimensions has a unit shape, depending on the selected shape of the recess contour in the Functional level at least one fluid jet of a certain shape and / or emits a certain amount of leakage per unit of time to the environment. ? 1%