WO2004059094A1 - Sanitary outflow fitting - Google Patents

Abstract

The invention relates to a sanitary outflow fitting comprising a housing (2) provided with at least one admission (5, 6) for water and one upwardly open outflow tray (49), via which the water flows out in the form of a curtain. The outflow tray (49) is arranged on the upper side of the housing (2) of the fitting. The water flows out of the inside of the fitting housing (2) through a throughflow opening (62) of the outflow tray (49), located on the upper side thereof. The aim of the invention is to prevent an unwanted backflow of water from the upper side of the outflow tray (49) into the fitting housing (2). To this end, an elastic membrane (55) is provided, said elastic membrane generally being arranged, with at least one edge thereof, on the upper side of the outflow tray (49), and closing the throughflow opening (62) which can open, however, under the pressure of the water from below and thus enables the water to flow over the outflow tray (49).

Description

 Sanitary outlet fitting

The invention relates to a sanitary Auslaufar atur with a fitting housing with at least one inlet for water and with an upwardly open outlet tray through which the water flows out as a water curtain.

With such outlet fittings, as described for example in DE 39 15 357 AI, an increasing consumer need for luxury and well-being is taken into account, particularly in the bathroom area. The water curtain generated by these outlet fittings is perceived by many people as particularly pleasant and visually appealing. In general, however, with all these outlet fittings, the problem arises of integrating the outlet tray into the overall appearance of the outlet fitting on the one hand and, on the other hand, ensuring that water flows over the outlet tray, resulting in a beautiful spray pattern with a water curtain that is as continuous as possible.

In the case of the above-mentioned DE 39 15 357 AI, the outlet tray is attached laterally to the lateral surface of a cylindrical fitting housing, in a position which essentially corresponds to that of conventional outlets. The outlet bowl is designed as a circular ring segment with a relatively large included angle. The optical result is not very satisfactory; in addition, it is difficult to dispense the outlet bowl of this known To flow over the outlet fitting from the inside to the outside with a larger opening angle while maintaining a continuous water curtain.

The object of the present invention is to design a sanitary outlet fitting of the type mentioned at the outset in such a way that the outlet tray is integrated into the overall appearance of the fitting in an optically appealing manner and at the same time to obtain a beautiful spray pattern of the water flowing down the outlet tray and from the edge thereof ,

This object is achieved in that

a) the outlet tray is arranged on the top of the fitting housing;

b) the outlet shell is provided with a through-flow opening to which the water flowing through the fitting housing is supplied;

c) an elastic membrane is provided, which in its rest position covers the flow opening and rests against the top of the outlet shell, so that no water can flow down through the flow opening from the top of the outlet shell, but which is under a water pressure from below the top of the outlet tray lifts and thus releases the water flow from below to the top of the outlet tray.

The invention thus moves the outlet tray from a lateral position on the valve housing to a position in which it covers the valve housing at the top. This initially leads to an overall harmonious impression. Since the outlet shell projects radially beyond the valve body in all directions, the water is not supplied to it from the side but via an internal flow opening. To prevent - for example when cleaning - water from the

If the top of the outlet tray flows back into the interior of the sanitary outlet fitting, the membrane is provided which, in the manner of a check valve, only allows water to flow from below to the top of the outlet tray, but not in the opposite direction.

Particularly beautiful jet patterns result when the flow opening of the outlet shell is ring-shaped or a large number of flow openings lie on a ring; accordingly, the membrane covering the throughflow opening (s) must also be annular.

The membrane can be conical, especially in the relaxed state. As a result, in the closed position, an edge of the membrane is pressed particularly well against the top of the outlet shell.

The invention is basically suitable for all types of sanitary outlet fittings. However, the inventive idea is particularly interesting in the case of such outlet fittings which contain the elements controlling the water flow, for example in the form of a control cartridge. In this case, an embodiment of the invention is preferred in which an actuating mechanism for the control elements is passed through the area lying radially inside the annular throughflow opening. This sanitary outlet fitting can then be operated, similar to a conventional single lever mixer, with an operating lever which protrudes upwards from the outlet bowl. At its edge region, which is normally on the top of the outlet shell, the membrane can have a structuring which, when the edge is lifted off the top, influences the spray pattern of the outflowing water. With the help of the membrane, special optical effects can be achieved in the beam pattern.

An embodiment of the invention is explained below with reference to the drawing; show it

Figure 1 shows an axial section through a basin fitting;

Figure 2 shows a section through the basin fitting of Figure 1 along the line II-II there;

Figure 3 is a perspective plan view of the main part of the fitting housing of the basin fitting of Figures 1 and 2;

Figure 4 is a perspective view from below of a receiving insert of the basin fitting of Figures 1 and 2;

FIG. 5 shows an enlarged detail from FIG. 1;

FIG. 6 shows a section through a membrane which is used in the wash basin fitting of FIGS. 1 and 2;

FIG. 7 schematically shows the water jet image obtained with the wash basin fitting in FIGS. 1 and 2. The basin fitting shown in the drawing, which bears the overall reference number 1, comprises a fitting housing 2 which consists of a cup-shaped main part 2a which is open at the top and a spacer ring 2b placed thereon. The main part 2a is delimited at the bottom by a standing area 3 which is at an oblique angle to the housing axis. In the assembled state, the standing surface 3 rests on a corresponding horizontal washstand surface, so that the axis of the housing 2, as shown, runs at an angle deviating from 90 ° with respect to the horizontal.

As can be seen in particular from FIGS. 2 and 3, the bottom 4 of the housing 2, on which the standing surface 3 is formed, is penetrated by two through bores 5, 6, which are arranged in mirror symmetry with respect to the sectional plane of FIG Hot and cold water can be attached. This fastening serves a blind threaded bore 7, which is made approximately in the middle of the standing surface 3, vertical to this, in the bottom 4 of the housing 2. In a further sack tapped hole 8, which is inserted into the bottom 4 parallel to the sack tapped hole 7 from the base surface 3, a fastening rod can be screwed in, which is not shown in the drawing and serves in the usual manner for fastening the basin fitting 1 to the basin , Finally, the bottom 4 of the housing 2 is penetrated by an eccentric through hole 9, which, however, does not open at the top into the interior of the housing 2, but at the outer surface of the housing 2. It serves to carry out an actuating rod, not shown, for the drain valve of the washstand on which the washbasin fitting 1 is mounted.

FIG. 3 shows an insight into the interior of the main part 2a housing 2, seen from above. The mouths of the water-carrying through bores 5, 6 can be seen there. An approximately C-shaped recess 12 is machined into the bottom surface 11, which comprises the entire half of this bottom surface 11 opposite the through bores 5 and 6 and two regions which extend into half of the through bores 5, 6 and partially surround them. In the plane of symmetry, a simple blind hole 13 is also incorporated into the bottom surface 11, the purpose of which will become clear below.

In the interior 10 of the main part 2a of the housing 2, a receiving insert 14 is set from above, which also has the shape of an upwardly open cup. The bottom 15 of the receiving insert 14 is penetrated by two symmetrical, off-center through holes 16, 17 which in assembled state with the through holes 5 and 6 in the housing 2. These through holes 16, 17 can be seen in FIGS. 2 and 4. The purpose of a further, large-area through-bore 18, which is provided opposite the two through-bores 16, 17 in the plane of symmetry of the receiving insert 14, also becomes clear only below. Finally, a blind bore 19 is machined into the bottom 15 of the receiving insert 14, which in the assembled state is aligned with the blind bore 13 in the bottom 4 of the housing 2. A pin 20 inserted into the two blind bores 13, 19 ensures the correct orientation of the receiving insert 14 with respect to the bottom 4 of the housing 2.

In the outer surface 21 of the receiving insert 14 is in the lower area adjacent to the bottom surface 15 an annular groove 22 is formed in which a spacer ring 23 lies. As FIG. 1 shows, the spacer ring 23 has an outer diameter which corresponds to the diameter of the interior 10 of the main part 2a of the housing 2. The spacer ring 23 therefore centers the receiving insert 14 within the housing 2 such that an annular flow-through space 24 remains between the lateral surface of the interior 10 and the lateral surface 21 of the receiving insert 14. The spacer ring 23 has a multiplicity of axially parallel grooves or notches on its outer lateral surface, through which water can flow. These are not recognizable in the drawing.

A control cartridge which is known per se and which bears the overall reference number 26 is inserted into the interior 25 of the receiving insert 14 from above. The control cartridge 26 contains control disks, generally ceramic, one of which is fixed and the other is movable relative to the fixed. The flow of hot and cold water through the control cartridge 26 can be controlled by a combined rotary and / or translational movement of the movable control disk so that the temperature and amount of the water emerging from it can be determined. The control cartridge 26 has two through bores in its base, which are aligned with the through bores 16 and 17 of the receiving insert 14 and serve to supply hot or cold water to the control cartridge 26, and a further through bore through which the mixed water from the control cartridge 26 leaves again. This through bore of the control cartridge 26 is aligned in the assembled state with the through bore 18 in the receiving insert 14, which in turn is oriented such that the mixed water flowing through the through bore 18 into the recess fung 12 of the housing 2 arrives.

The mixed water flows through a flow restrictor 27, which is fastened in the through hole 18 of the receiving insert 14. The quantity throttle 27 is designed in such a way that it limits the flow rate per unit of time to a maximum value which can no longer be exceeded even if the pressure increases.

The control cartridge 26 is in the interior 25 of the

Receiving insert 14 held by a screw 28, which projects with its lower area from above into the interior 25 of the receiving insert 14, is sealed there against the lateral surface of the interior 25 and bears with its lower edge against a peripheral flange 29 of the control cartridge 26. The screw part 28 has the rough shape of a bell, which is provided at its upper end with a large through bore 30. An external thread 31 is located at a certain distance from the lower collar 30, which acts on the flange 29 of the control cartridge 26, and cooperates with a thread 33 in the upper end region of the lateral surface of the interior 10 of the main part 2a of the housing 2. The arrangement is such that when the external thread 32 of the screw part 28 is screwed into the thread 33 of the housing 2 of the screw part 28, the control cartridge 26 presses downward into contact with the bottom surface of the interior 25 of the receiving insert 14 and compresses the seals provided there for the ensure a tight transfer of the water flows between the bores 16, 17, 18 of the insert 14 and the bores that are flush with it in the bottom of the control cartridge 26. The control lever 34 of the control cartridge 26 projects from below into the interior surrounded by the bell-shaped screw part 28. This can be pivoted in a known manner about an axis running perpendicular to the axis of the control cartridge 26 by the amount of the mixed water escaping from the control cartridge 26 to change, and rotated about an axis parallel to the axis of the control cartridge 26 to adjust the mixing ratio of cold and hot water and thus the temperature of the outflowing mixed water.

When used in conventional sanitary fittings, their operating lever is positively placed directly on the control lever 34. In the present case, however, a driving part 35 is fastened to the control lever 34 and has a toothing 36 on its upper, circular-arc-shaped edge.

The operating lever 37, on which the hand of the user engages, protrudes essentially upward in the washing fitting shown. At its lower, facing end, it has a spherical bearing part 38, which is rotatably mounted in a bearing ring 39 by means of a pivot pin 40. The spherical part 38 lies with its outer surface sliding against a complementary spherical-spherical bearing surface 41 of the bearing ring 39. The bearing ring 39 in turn is rotatable about an axis coaxial to the axis of the housing 2.

In a recess 42 of the bearing part 38, an end region of a pivoting member 63 is received, which has an arc-shaped toothing 44 at the lower edge of its region protruding from the bearing part 38. The toothing 44 meshes with the toothing 36 on the with the control lever 34 of the cartridge 26 connected driving part 35.

The bearing ring 41 extends downward from the upper, cylindrical region in which the operating handle 37 is mounted to a hollow cylindrical apron 45, which on its inner surface is in positive engagement with a rotating part 46 of the control cartridge 26. In FIGS. 1 and 2, the area of this rotating part 46 protruding upward from the housing of the control cartridge 26 can be seen. This is in the inner area

Rotating part 46, in which the control lever 34 is also pivotally mounted and which can be rotated about the axis of the control cartridge 26, in a rotationally locking manner with the movable control disk of the control cartridge 26 in connection.

The intermediate ring 47 is placed on the upper edge of the main part 2a of the housing 2, again a pin 48, which is inserted in blind bores of the main part 2a and the intermediate ring 47, ensures the correct rotational orientation. On the upper end face of the intermediate ring 47, in turn, a relatively large spout 49, seen from above, is placed. The outlet shell 49 is penetrated by a circular opening 50 which widens conically in the outer region.

The screw part 28 has at its end facing away from the control cartridge 26 an external thread 51, onto which a fastening ring 52 with an internal thread 64 is screwed. The fastening ring 52 has one

Circumferential surface 53, which is complementary inclined to the conical wall of the through hole 50 of the outlet shell 49. In this way, the fastening ring 52 presses the outlet shell 49 against the upper end face of the intermediate ring 47. ring 52 is provided with a plurality of groove-like openings which together form an interrupted annular flow opening 62.

The inner edge of an annular membrane 55 is clamped between the upper edge region of the fastening ring 52 and a clamping ring 54. For this purpose, the clamping ring 54 has a hollow cylindrical hub 56 which extends in the axial direction and which carries an external thread 57. This is screwed to an internal thread 58 of the fastening ring.

Finally, a flat, annular diaphragm 59 is clipped over the upper end face of the clamping ring 54.

The membrane 55 is drawn out in FIG. 6. It comprises a relatively thin, flexible region 60 which widens conically in the installed position on the outlet shell 49 and which starts from a clamping bead 61 located on the radially inner edge. When the control cartridge 26 is closed, as shown in FIGS. 1 and 2, the radially outer edge of the membrane 55 lies against the upper surface of the outlet shell 49.

The function of the basin mixer 1 described above is as follows:

First of all, it is assumed that the movable control disc is in its closed position within the control cartridge 26, in which the flow of both cold and hot water is therefore prevented. The cold and hot water are in the aligned through-bores 5, 6 of the housing 2, the through-bores 16 and 17 of the receiving insert 14 and the not shown made through holes in the bottom of the control cartridge

26 and act on the underside of the movable control disc.

If a water flow is now to be initiated, the user pivots the operating lever 37 counterclockwise in the view in FIG. 1. This has the consequence that the pivot member 63 connected to the operating lever 37 via the spherical bearing part 38 also pivots counterclockwise. This movement is via the intermeshing teeth 44 and

36 transferred to the control lever 35 of the control cartridge 26. In the view of FIG. 1, this pivots clockwise downward and, with its lower end located inside the housing of the control cartridge 26, moves the movable control disk in such a way that a water flow through the control cartridge 26 starts. The mixing ratio of cold and hot water to the mixed water emerging from the control cartridge 26 is determined by the rotational position of the rotating part 46 of the control cartridge 26 -, which in turn can be adjusted by rotating the bearing ring 39 about its axis. This rotation of the bearing ring 39 is also accomplished via the operating lever 37, which is therefore basically to be operated in the same way as is the case with conventional single-lever mixers.

The mixed water leaving the control cartridge 26 first flows through the quantity throttle 27, which ensures that only a certain maximum amount of water can flow through per unit time. The mixed water flows from the flow restrictor 27 through the through hole 18 in the bottom 15 of the receiving insert 14, from there into the recess 12 in the bottom 11 of the housing 2 and is distributed in the circumferential direction. Flows out of the recess 12 the water continues via the annular flow space 24 between the inner lateral surface of the housing 2 and the outer lateral surface 21 of the receiving insert 14, through recesses in the annular collar 31 of the screw part 28 through to the fastening ring 52. It then passes through the groove-like recesses on the peripheral surface 53 of the fastening ring 52 along the gap between the fastening ring 52 and the through bore 50 of the outlet shell 49 and thus reaches the space below the membrane 55. The membrane 55 is now lifted up by the water pressure so that the water can escape to the upper surface of the outlet shell 49. From there it flows over a large area in a jet pattern, as is shown schematically in FIG. 7, and falls down from the lower edge region of the outlet shell 49 in a kind of curtain. The flow restriction 27 in the through hole 18 of the receiving insert 14 ensures that pressure fluctuations in the house line no longer change the spray pattern once the maximum liter capacity of the wash basin fitting 1, which is predetermined by the flow restriction 27, has been reached.

If the water flow through the control cartridge 26 is turned off by pivoting the operating lever 37 in opposite directions, the outer edge of the membrane 55 is returned by the elastic forces of the membrane 55 to the position shown in FIGS. 1 and 2, in which it is at the upper one Surface of the outlet shell 49 rests. In this position, the membrane 55 prevents water, in particular dirty water, from penetrating into the interior of the basin fitting 1.

Claims

claims 1. Sanitary outlet fitting with a fitting housing with at least one inlet for water and with an outlet shell which is open at the top and through which the water flows out as a water curtain, characterized in that a) the outlet shell (49) is arranged on the top of the fitting housing (2); b) the outlet shell (49) is provided with a throughflow opening (62), to which the water flowing through the fitting housing (2) is fed; c) an elastic membrane (55) is provided, which closes the flow opening (62) in its rest position, so that no water can flow from the top of the outlet shell (49) down through the flow opening (62), but below a water pressure present from below lifts from the top of the outlet shell (49) and thus releases the water flow from below to the top of the outlet shell (49). 2. Sanitary outlet fitting according to claim 1, characterized in that the throughflow opening (62) of the outlet shell (49) is ring-shaped or a plurality of flow openings lies on a ring and the membrane (55) covering this is ring-shaped. 3. Sanitary outlet fitting according to claim 2, characterized in that the membrane (55) is conical in the relaxed state. 4. Sanitary outlet fitting according to claim 2 or 3, characterized in that an actuating mechanism (38, 63) for control elements (26) is guided through the radially inside the annular throughflow opening (s) (62), which in the interior (10) the valve body (2) are arranged. 5. Sanitary outlet fitting according to one of the preceding claims, characterized in that the membrane (55) at its edge region which normally lies on the top of the outlet shell (49) has a structure which influences the jet pattern of the outflowing water when the edge region is lifted off the top side.