EP1757740B1 - Sanitary water tap, in particular single-lever mixer tap. - Google Patents

Description

1. a) einem Gehäuse;
2. b) einem Auslauf, der eine nach oben offene Auslaufrinne aufweist, durch welche im Betrieb Wasser drucklos strömt;
3. c) einem Aufnahmeraum in dem Gehäuse, in welchem ein eine Steuerkartusche enthaltender Aufnahmeeinsatz angeordnet ist;

wobei

• d) zwischen einem Bodenteil des Aufnahmeeinsatzes und dem Boden des Aufnahmeraums ein erster Durchströmungsraum vorgesehen ist, durch welchen Wasser, welches die Steuerkartusche verlässt, radial nach außen strömen kann;
• e) zwischen der Mantelfläche des Aufnahmeeinsatzes und der Mantelfläche des Aufnahmeraums ein ringförmiger, zweiter Durchströmungsraum ausgebildet ist, der unten mit dem ersten Durchströmungsraum und oben mit der Auslaufrinne kommuniziert.

The invention relates to a sanitary outlet fitting, in particular a single lever mixer, with

1. a) a housing;
2. b) an outlet which has an upwardly open outlet channel through which water flows without pressure during operation;
3. c) a receiving space in the housing in which a recording cartridge containing a control cartridge is arranged;

in which

• d) between a bottom part of the receiving insert and the bottom of the receiving space, a first flow space is provided, through which water leaving the control cartridge, can flow radially outward;
• e) between the lateral surface of the receiving insert and the lateral surface of the receiving space an annular, second flow-through space is formed, which communicates below with the first flow-through space and at the top with the discharge chute.

Recently, the desire to set new trends in the design of sanitary fittings is growing. Especially also sanitary outlet fittings are desired, in which the outlet is in the upper or even the uppermost area and the water flows through a kind of discharge chute substantially depressurized, similar to a small natural stream. To create the impression of naturalness, it is necessary that the water flow in the outlet channel is largely turbulence-free. To achieve this, however, is not easy, since the waterway is connected through the sanitary fitting with many deflections.

In part, the difficulties stem from the fact that the widely used control cartridges generally have all the connection openings at the bottom of their bottom, which facilitates the tight connection of the control cartridge with the valve body. This design principle of the control cartridge is actually intended for sanitary fittings in which the spout is attached relatively deep to the valve body. Nevertheless, it is desirable to use these known control cartridges even in sanitary fittings of the type mentioned.

Against the background of this problem, the known sanitary outlet fittings of the type mentioned are to be understood, as in particular from the DE 102 61 266 B3 are known. In these, a homogenization and calming of the water flow takes place at two points: First, in the annular flow space between the lateral surface of the receiving insert and the lateral surface of the receiving space by a single Durchströmungsausnehmungen exhibiting spacer ring is used there. On the other hand, a homogenization of the water flow is directly at the outlet of the water in the cup-shaped there Aspiration sought by at the inlet into the spout, a contrast against the water pressure elastic membrane is used. The document DE 10261266 B3 will be the closest thing to the technology. The preamble of claim 1 corresponds to this document. Other sanitary fittings similar to those of the type mentioned above with open drainage channel are from the WO 01/63 157 A1 and the DE 94 10 250 U1 known. To calm the water flow are used in the WO 01/63 157 A1 successively arranged throttle points, while in the DE 94 10 250 U1 the distribution of the outflowing water is carried out in two superimposed streams of water and by two arranged in the lower stream of water jet breaker.

Object of the present invention is to provide a sanitary fitting of the type mentioned in such a way that with simple means a natural, calmed down as possible water flow through the outlet channel of the outlet is achievable.

• f) am oberen Ende des ringförmigen, zweiten Durchströmungsraumes ein ringförmiger im wesentlichen Kneiszylindrischer Tosraum vorgesehen ist, dessen Breite die Breite des zweiten Durchströmungsraumes radial nach innen übersteigt und der in einer solchen axialen Höhe angeordnet ist, dass zumindest ein Überlapp mit dem innenliegenden Ende der Auslaufrinne gegeben ist, derart, dass
• g) das Wasser in dem Tosraum seine Strömungsrichtung von axial auf im Wesentlichen radial in Richtung auf die Auslaufrinne ändert.

This object is achieved in that

• f) an annular substantially Kneiszylindrischer Tosraum is provided at the upper end of the annular, second flow space whose width exceeds the width of the second flow space radially inwardly and which is arranged at such an axial height that at least one overlap with the inner end of the discharge chute is given, such that
• g) the water in the immediate space its flow direction from axially to substantially radially in the direction changes to the outlet trough.

According to the invention, it has been recognized that it is precisely the last deflection of the water flow direction from the axial, as it prevails in the second, annular throughflow space in the radially forward direction, as present in the outlet channel, that is of decisive importance for the quality of the water flow. The at-rest area provided at this junction ensures that the deflected water can calm sufficiently before exiting into the outlet trough, so that the almost perfect appearance of a natural body of water can actually be achieved in the outlet trough.

The fact that the second flow-through chamber has a radially cylindrical shape in the radial direction prevents the outflowing water from being swirled in this region.

Preferably, the dead space is partially limited by a reduced diameter collar of the receiving insert. The recording takes over a second function.

A further improvement of the image of the water flowing through the outlet channel can be achieved by arranging a jet regulator having a multiplicity of passage openings at the transition point between the dead space and the outlet channel.

For good development of its effect, the dead zone should be at least twice as wide, preferably about three times as wide as the second annular flow-through space be.

Figur 1

einen Axialschnitt durch eine sanitäre Waschtischarmatur;

Figur 2

die Vorderansicht der Waschtischarmatur von Figur 1;

Figur 3

die Unteransicht eines Einsatzbodenteiles, das bei der Waschtischarmatur der Figuren 1 und 2 Verwendung findet;

Figur 4

einen Axialschnitt durch das Einsatzbodenteil von Figur 3;

Figur 5

in isometrischer Darstellung das Einsatzbodenteil der Figuren 3 und 4.

An embodiment of the invention will be explained in more detail with reference to the drawing; show it

FIG. 1

an axial section through a sanitary washbasin fitting;

FIG. 2

the front view of the washbasin faucet from FIG. 1 ;

FIG. 3

the bottom view of a bottom insert part, which in the basin mixer of FIGS. 1 and 2 Use finds;

FIG. 4

an axial section through the insert bottom part of FIG. 3 ;

FIG. 5

in isometric view of the bottom insert part of FIGS. 3 and 4 ,

The sanitary wash-down fitting shown in the drawing and designated overall by the reference numeral 1 comprises a cast housing 2, to which an outlet 3 is integrally formed. The outlet 3 contains in contrast to conventional sanitary fittings no closed up to an outlet opening water channel, but has an upwardly open discharge channel 4, ie an outlet region which is concave curved seen from above.

In the housing 2, an upwardly open, cup-shaped receiving space 5 is recessed, in which a receiving insert 6 is arranged for a control cartridge 7. The receiving insert 6 in turn comprises an insert bottom part 8 and an insert shell 9, which are bolted together.

The insert bottom part 8 is in the FIGS. 3 to 5 shown in more detail, to which reference is now made. It has the basic shape of a cylindrical plate, on the underside of one piece two positioning pins 10, 11 are integrally formed. In the assembled state, these positioning pins 10, 11 protrude into two blind holes 12, 13 which, as seen in FIG FIG. 1 can be seen, are introduced into the bottom surface of the receiving space 5. Through the interaction of the positioning pins 10, 11 and the blind holes 12, 13 the insert bottom part 8 is given the correct position within the receiving space 5.

Through the insert bottom part 8 axially parallel two through holes 14, 15 extending into the FIGS. 1 and 4 are not recognizable, since the local sections lie in a lying between these two through holes 14, 15 level. However, the through holes 14, 15 are in the Figures 3 and 5 visible, noticeable.
They are surrounded by circular, in the manner of an "8" merging into each other ribs 16, 17, which extend from the bottom of the bottom insert part 8 raised down.

In the vicinity of the radially outer edge of the insert base part 8 extends on a circle a plurality of arcuate curved segments 18, between which a narrow gap 19a remains and which are also raised from the bottom of the insert base part 8 down. The lower end faces of the ribs 16, 17 and the segments 18 lie in a common plane, in which the insert bottom part 8 rests on the bottom of the receiving opening 5 of the housing 2. In this way arises between the bottom of the receiving space 5 and the bottom of the insert base part 8, a first flow space 19, which will be discussed in more detail below.

In the region of the first flow-through space 19, lying in the plane of symmetry of the insert bottom part 8, penetrates a further through-bore 20, the insert bottom part 8. In an upper, enlarged diameter portion of the through hole 20 is a flow restrictor 21, a crowd restrictor of known construction, which ensures that only a certain maximum amount of water per unit of time can flow through.

To the insert bottom part 8, a radially projecting flange 22 is formed, whose outer diameter corresponds to the inner diameter of the receiving space 5 of the housing 2, such that the receiving insert 6 is centered within the receiving space 6. As in particular the isometric representation of the FIG. 5 can be seen, the outer surface of the flange 22 has a plurality of semi-cylindrical grooves or notches 23, whose function will be apparent below.

Above the flange 22, the insert base part 8 has a cylindrical, interrupted by an annular groove 24 region which carries an external thread 25. The annular groove 24 serves to receive an O-ring seal, which seals the insert upper part 9 against the insert bottom part 8.

The upper insert part 9 has a circular cylindrical skirt 26 whose outer diameter is slightly smaller than the inner diameter of the receiving space 5 of the housing 2, so that between the outer circumferential surface of the upper insert part 9 and the inner circumferential surface of the receiving opening 5, an annular, second flow-through space 27 is formed. The insert upper part 9 tapers above the skirt 26 via a radially inwardly jumping step to a substantially cylindrical collar 28, which has a radially larger region 29 at its upper end. In the lateral surface of the radially enlarged portion 29 of the collar 28, an annular groove 30 is formed for inserting an O-ring seal.

At the lower portion of the skirt 26 of the insert upper part 9 there is an internal thread 31 which cooperates with the external thread 25 of the insert base part 8.

In the interior of the receiving insert 9 is, as already indicated above, the control cartridge 7, which contains in a known manner the water flow controlling elements, generally control discs made of ceramic. The control cartridge 7 has on its bottom surface a total of three openings (not visible): Two of these openings communicate with the through holes 14 and 15 in the insert base part 9 and serve to supply cold and hot water to the control cartridge 7. The third opening in the bottom of the control cartridge. 7 communicates with the passage opening 20. Via it, mixed water flows out of the control cartridge 7.

The control cartridge 7 has a diameter step 32, which leads to a reduced diameter in the neck 33 of the control cartridge 7 and at which the step of the insert upper part 9 between skirt 26 and collar 28 attacks. The arrangement is obviously such that by screwing the insert upper part. 9 on the insert bottom part 8, the control cartridge 7 is pressed against the upper end face of the insert bottom part 8.

From the neck 33 of the control cartridge 7 protrudes in a known manner, a lever 34 which pivots to change the amount of water leaking about an axis perpendicular to the plane and rotated to change the temperature of the outgoing water to an axis lying in the plane of the drawing. On the adjusting lever 34, a handle 35, which is guided out of the housing 2 of the washbasin fitting 1 and is actuated by the user, is detachably fastened in a manner not of interest here.

In the upper end portions of the receiving space 5 of the housing 2, a ring 36 is used, which has a window 37 in the region facing the outlet channel 4, as in particular the FIG. 2 can be seen. In the window 37 of the ring 36, a jet regulator 38 is used, which has a plurality of arranged in a honeycomb arrangement flow openings. At the upper end side of the ring 36, for example by Verklipsen or gluing, a kugelkalottenförmiges termination part 39 is fixed, which has a coaxial with the axis of the receiving space 5 through hole 40. Through the through hole 40, the operating handle 35 extends.

By the diameter gradation of the insert part 9 is formed between the collar 28 and the ring 36 an annular, relatively voluminous Tosraum 41, which down to the annular flow space 27 and via the jet regulator 38 radially - with respect to the axis of the receiving space 5 - forward communicates with the outlet channel 4. The dead space 41 is more than double, in the illustrated example about three times as wide as the second annular flow space 27 and is located relative to the axis of the receiving space 5 in such axial height that in the axial direction at least a partial overlap with the inner end of the Outlet trough 4 is given.

At the operating handle 35 a likewise spherical cap-shaped cover member 42 is fixed, the underside of which is curved like a ball portion. The radius of curvature is substantially coincident with the radius of curvature of the closure part 39. The cover part 42 comprises an outer visible part 42a and a glued part 42b glued or clipped with this visible part 42a. The visible part 42a is preferably made of metal and is provided with a visible surface, such as a chrome plating. The sliding part 42b is made of a good sliding properties plastic; its diameter is slightly less than that of the visible part 42a. While the slide member 42b slides with its concave underside on the closure member 39, the lower, radially outside of the slide member 42b lying edge of the viewing part 42a is slightly offset upwards, so that this edge does not come to rest on the termination part 39.

The housing 2 of the sanitary fitting has at the bottom of another, downwardly open cavity through which two water supply lines 43 extend therethrough. Of the two water supply lines 43 is in FIG. 1 only one recognizable, behind the Cutting plane is located. The water supply lines 43 are each connected to connection piece 44, which are integrally formed on the bottom between the receiving space 5 and the lower cavity 45 wall of the housing 2. Two through holes that pass through this wall, connect the water supply lines 43 with the through holes 14, 15 in the insert base part 8 and thus with the water inlet openings in the bottom of the control cartridge. 7

• Wird mit Hilfe des Handgriffs 35 die Steuerkartusche 7 geöffnet, so beginnt über zumindest eine der beiden Wasserzulaufleitungen 43 Wasser zu strömen. Dieses gelangt durch die entsprechende(n) der beiden Durchgangsbohrungen 14, 15 in das Innere der Steuerkartusche 7, wo je nach Drehstellung des Handgriffs 35 und damit des Stellschaftes 34 eine Vermischung von Kalt- und Warmwasser stattfindet. Das Mischwasser tritt an der Unterseite der Steuerkartusche 7 wieder aus und durchströmt nunmehr die Mengendrossel 21 in der Durchgangsbohrung 20 des Einbodenteiles 8, von wo aus es in den Durchströmungsraum 19 an der Unterseite des Einsatzbodenteiles 8 gelangt.

The washbasin fitting 1 described above functions as follows:

• If the control cartridge 7 is opened with the aid of the handle 35, water begins to flow through at least one of the two water supply lines 43. This passes through the corresponding (s) of the two through holes 14, 15 in the interior of the control cartridge 7, where, depending on the rotational position of the handle 35 and thus of the Stellschaftes 34 takes place a mixing of cold and hot water. The mixed water exits at the bottom of the control cartridge 7 again and now flows through the crowd restrictor 21 in the through hole 20 of the bottom part 8, from where it passes into the flow space 19 at the bottom of the insert bottom part 8.

The mixed water now flows substantially radially to the outer edge of the insert bottom part 8, wherein it passes through the gaps 19 a between the individual segments 18. As a result, a first equalization of the water flow takes place. The water now changes its direction of flow. It flows axially upwards through the grooves 23 on the lateral surface of the flange 22 of the insert bottom part 8, which is a further homogenization of Water flow has the consequence, and now passes into the annular flow space 27, in which it flows along the outer surface of the insert upper part 9 upwards into the annular space 41 Tos.

In this Tosraum 41 again takes place a change of the flow direction, this time from axially upwards in radially forward. The water entering the toe space 41 flows around the collar 28 of the upper insert 9 onto the outlet channel 4 on opposite sides. In this case, the water can calm down before it then, evened out for the third time, flows through the jet regulator 38 to the outside into the outlet channel 4. There it flows almost laminar and depressurized down and falls in the manner of a water curtain over the lower edge of the water outlet freely down to the vanity.

Claims (4)

1. Sanitary outlet fitting (1), in particular single-lever mixer, having

   a) a housing (2);

   b) an outlet (3), which has an outlet channel (4) which is open in the upward direction and through which, during operation, water flows in an unpressurized state;

   c) an accommodating chamber (5) in the housing (2), said chamber having arranged in it an accommodating insert (6) which contains a control cartridge (7);

   wherein

   d) a base part (8) of the accommodating insert (6) and the base of the accommodating chamber (5) have provided between them a first throughflow chamber (19), through which water leaving the control cartridge (7) can flow radially outwards;

   e) the lateral surface of the accommodating insert (6) and the lateral surface of the accommodating chamber (5) have formed between them an annular, second throughflow chamber (27), which communicates with the first throughflow chamber (19) at the bottom and with the outflow channel (4) at the top;

   characterized in that

   f) provided at the upper end of the annular, second throughflow chamber (27) is an annular, essentially circular-cylindrical stilling chamber (41), of which the width exceeds the width of the second throughflow chamber (27) in the radially inward direction and which is arranged at such an axial height that it overlaps at least the inner end of the outflow channel (4) such that

   g) the flow direction of the water in the stilling chamber (41) alters from axial to essentially radial in the direction of the outflow channel (4).
2. Sanitary outlet fitting according to Claim 1, characterized in that the stilling chamber (41) is partially delimited by a reduced-diameter collar (28) of the accommodating insert (6).
3. Sanitary outlet fitting according to Claim 1 or 2, characterized in that a jet regulator (38) having a multiplicity of through-passage openings is arranged at the transition between the stilling chamber (41) and outflow channel (4).
4. Sanitary outlet fitting according to one of the preceding claims, characterized in that the stilling chamber (41) is at least double the width, preferably approximately three times the width, of the second, annular throughflow chamber (27).

Images