SINGLE LEVER CARTRIDGE FOR A SANITARY FAUCET

Abstract

A single-lever cartridge for a sanitary faucet for adjusting the temperature and/or quantity of mixed water by means of a swivel lever (3), having a control disk arrangement (5), which has a stationary control disk (6) disposed in a stationary position in the cartridge, in which a cold-water inlet and a hot-water inlet (27, 29) and a mixed-water outlet (31) are formed, and a dynamic control disk (8) displaceable by means of the swivel lever (3), in which a recess (33) is formed, which is disposed in different overlaps with the cold-water inlets and hot-water inlets (29, 27) and the mixed-water outlet (31) to adjust the temperature and/or quantity of the mixed water fed from the mixed-water outlet (31) of the stationary control disk (6), wherein the two control disks (6, 8) are in sliding contact with sealing surfaces (35, 37) facing each other at a sealing plane (DE), and wherein the mouths (39) of the cold-water inlets and hot-water inlets (29, 27) are formed in the sealing surface (35) of the stationary control disk (6), which mouths can be covered by the sealing surface (37) of the dynamic control disk (8). According to the invention, the cartridge has a throttling element (41) designed as a separate component, which can be used to reduce a flow cross-section of the mouths (39) of the cold-water inlets and the hot-water inlets (29, 27), for throttling the hot-water flow and/or cold-water flow into the recess (33) of the dynamic control disk (37).

Claims

1. A single-lever cartridge for a sanitary faucet for adjusting the temperature and/or quantity of mixed water by means of a swivel lever (3), having a control disk arrangement (5), which has a stationary control disk (6) disposed in a stationary manner in the cartridge, in which control disk a cold-water inlet and a hot-water inlet (29, 27) and a mixed-water outlet (31) are formed and which has a dynamic control disk (8) displaceable by means of the swivel lever (3), in which dynamic control disk a recess (33) is formed, which can be brought into different overlaps with the cold-water inlets and hot-water inlets (29, 27) and the mixed-water outlet (31) to adjust the temperature and/or quantity of the mixed water routed from the mixed-water outlet (31) of the stationary control disk (6), wherein the two control disks (6, 8) are in sliding contact with sealing surfaces (35, 37) facing each other at a sealing plane (DE), and wherein the mouths (39), which the sealing surface (37) of the dynamic control disk (8) of the cold-water inlets and hot-water inlets (29, 27) can cover, are formed in the sealing surface (35) of the stationary control disk (6), wherein the cartridge has a throttle element (41) designed as a separate component, which can be used to reduce a flow cross section of the orifices (39) of the cold-water inlet and hot-water inlets (29, 27) for throttling the hot-water flow and/or cold-water flow into the recess (33) of the dynamic control disk (37).

2. The single-lever cartridge according to claim 1, wherein the throttle element (41) has a throttle bottom (43) having throttle openings (55), which throttle bottom, at its bottom end facing the sealing surface (35) of the stationary control disk (6), is flush with the sealing plane (DE) and/or is in sliding contact with the sealing surface (35) of the stationary control disk (6).

3. The single-lever cartridge according to claim 1, wherein the throttle element (41) is cup-shaped, having a throttle bottom (43) and a preferably circumferentially closed shell (45) rising therefrom.

4. The single-lever cartridge according to claim 1, wherein the control disk arrangement (5) has a slide plate (17) mounted in a stationary manner at the dynamic control disk (8), at which slide plate a bearing position (19) is formed for an axle connection (15) at the swivel lever (3), and/or in that the shell (45) of the throttle element (41) merges into an outwardly angled retaining flange (47) at its rim remote from the bottom, and in particular in that the retaining flange (47) is secured between the dynamic control disk (8) and the slide plate (17), and/or in that the retaining flange (47) of the throttle element (41) is pressed against the dynamic control disk (8) by means of a spring (69).

5. The single-lever cartridge according to claim 3, wherein the preferably circumferential shell (45) of the throttle element (41) is preferably in gap-free contact with an inner wall of the dynamic control disk (8) delimiting the recess (33), and/or in that the shell (45) of the throttle element (41) has a closed surface.

6. The single-lever cartridge according to claim 2, wherein the throttle bottom (43) of the throttle element (41) is divided into a first bottom segment (51) having throttle openings (55), which, at its bottom end facing the sealing surface (35) of the stationary control disk (6), is flush with the sealing plane (DE) and/or is in sliding contact with the sealing surface (35) of the stationary control disk (6), and into a second bottom segment (49) having throttle openings (55), which bottom segment is spaced apart from the sealing plane (DE) by a distance (Δy), and in that, in particular, the two bottom segments (49, 51) merge into one another at a closed-surface transition section (53).

7. The single-lever cartridge according to claim 1, wherein the recess (33) formed in the dynamic control disk (8) forms a mixing chamber (34) in conjunction with the mixed-water outlet (31) in the stationary control disk (6), and in that the throttle element (41) divides the mixing chamber (34) into a first inlet-end sub-chamber (57) and a second outlet-end sub-chamber (59), wherein a cold and/or hot water flow at the inlet end initially flows completely through the first sub-chamber (57) and exits into the second sub-chamber (59) at the throttle openings (55) of the second bottom segment (49).

8. The single-lever cartridge according to claim 1, wherein a cleaning unit (61) is disposed in the first sub-chamber (57), which cleaning unit prevents the throttle openings (55) from being clogged by limescale or the like, and in that in particular the cleaning unit (61) has a baffle plate (63), which is spaced apart from the throttle openings (55), which is disposed loosely in the first sub-chamber (57) and from which cleaning pins (65) project, which are guided through the throttle openings (55) with hole clearance, and in that the flow pressure of the cold and/or hot water flowing into the first sub-chamber (57) moves the baffle plate (63) in conjunction with the cleaning pins (65) and as a result clogging of the throttle openings (55) by limescale, etc. is prevented.

Description

[0020] In the Figures:

[0021] FIG. 1 shows a perspective partial section of a single-lever cartridge;

[0022] FIG. 2 shows the throttle element in island position;

[0023] FIGS. 3a and 3b show different views of the single-lever cartridge for a closed position of the swivel lever;

[0024] FIGS. 4a and 4b, respectively, show views corresponding to FIG. 3, wherein the single-lever cartridge is in an open position, in which a flow connection is established between one of the water inlets and the mixed-water outlet;

[0025] FIG. 5 shows a detailed view of a second exemplary embodiment of the single-lever cartridge; and

[0026] FIG. 6 shows a view corresponding to FIG. 5, of a further exemplary embodiment of the single-lever cartridge.

[0027] FIG. 1 shows a single-lever cartridge having a swivel sleeve 1 with a swivel lever 3 integrated therein and a control disk pack 5. In the assembled state shown in FIG. 1, the swivel sleeve 1 and the control disk pack 5 are mounted in a mainly rotationally symmetrical cartridge housing 2.

[0028] The cartridge housing 2 is again installed in a mounting position in a faucet housing of a sanitary faucet having a water outlet. As can be seen from FIG. 1, in the installed position in the cartridge housing 2, the swivel sleeve 1 can be rotated about an axis of rotation D through a rotation angle predetermined by rotation stops (not shown). The swivel lever 3 is articulated inside the swivel sleeve 1 to a tilting axis K. The tilting axis K divides the swivel lever 3 into a lever arm 11 projecting from the cartridge, which can be actuated by the user, and a lever arm 13, which is coupled to a slide plate 17 of the control disk pack 5 via an axis connection 15. In FIG. 1, the control disk pack 5 also has a stationary control disk 6 disposed in a stationary position in the cartridge housing 2 and a displaceable, dynamic control disk 8 lying on top thereof. The dynamic control disk 8, in conjunction with the slide plate 17, forms a form-fitting unit. A bearing position 19 is formed at the top of the slide plate 17 in FIG. 1. The axle connection 15 is formed, on the one hand, by the bearing position 19 and, on the other hand, by a transverse axle journal 25 defining the bearing axis L, which extends axially in parallel to the tilting axis K.

[0029] A hot-water inlet 27 and a cold-water inlet 29 (FIG. 3b) are located in the stationary control disk 6. In addition, a mixed-water outlet is provided in the stationary control disk 6, which mixed-water outlet can be connected to the water outlet of the sanitary faucet. The cold-water inlets and hot-water inlets 29, 27 of the stationary control disk 6 can be brought into different overlaps with a recess 33 formed in the dynamic control disk 8, depending on the rotational or swivel position of the swivel lever 3, whereby a temperature adjustment and/or quantity adjustment of the mixed water can be performed. The recess 33 of the dynamic control disk 8 and the mixed-water outlet 31 in the stationary control disk 6 form a mixing chamber 34 (FIG. 3a or 4a).

[0030] The single-lever cartridge shown in the figures is used to adjust the temperature of the mixed water via a rotary actuation of the swivel lever 3 about the axis of rotation D. For such a rotary actuation about the axis of rotation D, the swivel lever 3, the swivel sleeve 1 and the slide plate 17 in conjunction with the dynamic control disk 8 form a rotationally coupled unit. In contrast, the volume of the mixed water is adjusted by means of a tilting motion of the swivel lever 3 about the tilting axis K, during which the dynamic control disk 8 moves in a linear motion along the stationary control disk 6. By way of example, FIGS. 3a and 3b show the swivel lever 3 in its center-of-rotation position and in its closed position, in which there is no flow connection between the inlets 27, 29 and the mixed-water outlet 31. In contrast, in FIGS. 4a and 4b, the swivel lever is tilted about its tilting axis K and rotated about its rotational axis D by a rotational angle, resulting in a flow connection between the right inlet 29 shown in FIG. 4b and the mixed-water outlet 31.

[0031] As shown in FIGS. 3a and 4a, the two control disks 6, 8 are in sliding contact with facing sealing surfaces 35, 37 (shown only in FIGS. 5 and 6) at a sealing plane DE. The mouths 39 (shown only in FIGS. 3a and 4a) of the cold-water inlets and hot-water inlets 29, 27 are formed in the sealing surface 35 of the stationary control disk 6. Depending on the positioning of the dynamic control disk 8, these may be covered or exposed by the sealing surface 37 of the dynamic control disk 8.

[0032] As can be seen from the figures, the single-lever cartridge has a throttle element 41 designed as a separate component, which can be used to reduce the flow cross-section of the orifices 39 of the cold-water inlets and hot-water inlets 29, 27. The throttle element 41 can be used to reduce the hot-water flow and/or cold-water flow into the mixing chamber 34 at the inlet end in the single-lever cartridge in that way.

[0033] The throttle element 41 is cup-shaped in the figures, according to FIG. 2 having a throttle bottom 43 and a circumferentially closed shell 45 rising therefrom. The shell 45 of the throttle element 41 is formed at its rim remote from the bottom with a retaining flange 47 angled outwards therefrom, which is clamped between the dynamic control disk 8 and the slide plate 17 in the installed position. In addition, the throttle bottom 43 of the throttle element 41 is divided into a first bottom segment 51 and a second bottom segment 49. The two bottom segments 49, 51 are each formed having throttle openings 55. In FIG. 3a or 4a, the bottom end of the first bottom segment 51 is positioned facing the sealing surface 35 of the stationary control disk 6 flush with the sealing plane DE and in sliding contact with the sealing surface 35 of the stationary control disk 6. In contrast, the second bottom segment 49 is spaced apart from the sealing plane DE by a clearance Δx (FIG. 4a, 5 or 6) forming a deformation space 53 and is out of sliding contact with the sealing surface 35 of the stationary control disk 6.

[0034] As mentioned above, the two bottom segments 49, 51 of the throttle bottom 43 are formed having throttle openings 55, whereas the circumferential shell 45 and an S-shaped transition section 53 between the two bottom segments 49, 51 are formed having a closed surface, i.e. without throttle openings 55.

[0035] In the installed position shown in FIG. 3a or 4a, the throttle element 41 divides the mixing chamber 34 into an upper, inlet-end sub-chamber 57 and a lower, outlet-end sub-chamber 59. In that way, when the water is running, a cold-water flow and/or a hot-water flow at the inlet end initially enters the first sub-chamber 57 completely through a first restriction point (that is, through the restriction openings 55 in the first bottom segment 51). The flow passes through the first sub-chamber 57 in transverse direction, wherein the cold-water flow and/or hot-water flow exits at a second restriction point (formed by the restriction openings 55 in the second bottom segment 49) into the outlet-end second sub-chamber 59.

[0036] In FIG. 5, the single-lever cartridge is shown according to a second exemplary embodiment, which is designed to be essentially identical in design to the single-lever cartridge of the preceding figures. In contrast to the previous figures, in FIG. 5 a cleaning unit 61 is disposed in the inlet-end sub-chamber 57, which prevents the clogging of the throttle openings 55 by limescale. The cleaning unit 61 has a baffle plate 63 from which cleaning pins 65 project. The cleaning pins are guided through the throttle openings 55 with hole clearance. In addition, the baffle plate 63 is loosely disposed in the first sub-chamber 57 and, in its rest position (i.e., when the faucet is not actuated), is spaced at a distance Δa (FIG. 5) from a wall 67 of the slide plate 17 delimiting the first sub-chamber 57. When the water is running through the faucet, the baffle plate 63 in conjunction with its cleaning pins 65 is moved in the direction of the slide plate 17, using up the above distance Δa, which prevents the throttle openings 55 from being clogged by limescale.

[0037] FIG. 6 shows a further exemplary embodiment of the single-lever cartridge, in which a compression spring 69 is supported between the delimiting wall 67 of the slide plate 17 and an upper end of the retaining flange 47 of the throttle element 41, which is used to secure the retaining flange 47 at the dynamic control disk 8.

LIST OF REFERENCE NUMERALS

[0038] 1 swivel sleeve [0039] 2 cartridge housing [0040] 3 swivel lever [0041] 5 control disk pack [0042] 6 stationary control disk [0043] 8 dynamic control disk [0044] 11 upper lever arm [0045] 13 lower lever arm [0046] 15 axis connection [0047] 17 slide plate [0048] 19 bearing position [0049] 25 axle journal [0050] 27 hot-water inlet [0051] 29 cold-water inlet [0052] 31 mixed-water outlet [0053] 33 recess [0054] 34 mixing chamber [0055] 35, 37 sealing surfaces [0056] 39 mouths [0057] 41 throttling element [0058] 43 throttle bottom [0059] 45 shell [0060] 47 retaining flange [0061] 49, 51 bottom segments [0062] 53 transition section [0063] 55 throttle openings [0064] 57, 59 sub-chambers [0065] 61 cleaning unit [0066] 63 baffle plate [0067] 65 cleaning pins [0068] 67 delimiting wall [0069] 69 spring [0070] D axis of rotation [0071] L bearing axis [0072] K tilting axis [0073] Δa distance [0074] Δx clearance height [0075] DE sealing plane