SANITARY FITTING WITH SHUT-OFF VALVES

Description

[0001] The present invention relates to a sanitary fitting with a cold water connection, a hot water connection, a mixing unit, a cold water line leading from the cold water connection to the mixing unit, a hot water line leading from the hot water connection to the mixing unit, a first valve arranged in the cold water line and a second valve arranged in the hot water line.

[0002] A sanitary fitting with the aforementioned features is known from EP 0 501 953 B1. The valves arranged in the cold water line and the hot water line serve to shut off and control the flow of hot and cold water to the mixing unit. The valves can be actuated simultaneously via a spindle. Sanitary fittings with the features of the preamble of claim 1 are known from JP H06 235468 A, JP 2019 065528 A1 and EP 3 309 307 A2.

[0003] The object of the present invention is to provide an alternatively designed sanitary fitting.

[0004] This problem is solved by a sanitary fitting with the features of the independent claim. Advantageous embodiments of the sanitary fitting are specified in the dependent claims and in the description, whereby individual features of the advantageous embodiments can be combined with one another in a technically meaningful manner.

[0005] The problem is solved in particular by a sanitary fitting with the aforementioned features, in which both the first valve and the second valve can only be switched between an open position and a closed position.

[0006] In other words, the basic concept of the invention is that the valves arranged in the hot water and cold water lines are designed exclusively for shutting off and releasing the flow of hot and cold water, respectively, and that no flow rate adjustment is possible with these valves. Such shut-off valves in the hot and cold water lines also ensure that no crossflow occurs between the hot and cold water connections. If flow rate adjustment for the mixed water is desired, this can be achieved by a suitable unit located downstream of the shut-off valves in the cold and / or hot water lines.

[0007] Preferably, the first and second valves are coupled in such a way that they can be switched simultaneously between the open and closed positions. This coupling ensures that in the open position, both cold and hot water always flow to the mixing unit, so that the temperature at the mixed water outlet depends solely on the setting of the mixing unit. This ensures that the first and second valves are simultaneously either in the open or closed position.

[0008] The coupling of the valves to ensure a uniform position can be designed mechanically or electronically.

[0009] According to the invention, the first and second valves are designed as mechanically actuated push valves. Such push valves can be switched between the open and closed positions by applying pressure. For this purpose, each valve has an actuating element that is linearly displaced by applying pressure, thereby switching between the open and closed positions. Such push valves are known per se in the field of sanitary fittings.

[0010] For the mechanical coupling of the push valves, it can be provided that the two push valves are connected by means of an actuating element. The actuating element is preferably fixedly connected to the actuating surfaces of the push valves. The actuating element is, in turn, either directly or via suitable additional components, linearly movable, so that both push valves are switched simultaneously by pressing the actuating element.

[0011] With the sanitary fitting according to the invention, it is also possible that no check valve is arranged upstream of the first valve in the cold water line and no check valve is arranged upstream of the second valve in the hot water line.

[0012] In principle, it would be possible if the mixing unit were designed as a single-lever mixing cartridge. However, in this case, both valves in the hot and cold water lines, as well as the single-lever mixing cartridge, would have to be actuated to release the water flow. Therefore, it is preferable for the mixing unit to be designed as a pure mixing unit, with which the temperature of the mixed water can be adjusted.

[0013] Preferably, the mixing unit is designed as a thermostatic cartridge for setting the mixed water temperature. With such a thermostatic cartridge, the mixed water temperature is regulated to the temperature set by the user. A thermostatic cartridge typically has a thermal expansion element around which the mixed water flows.

[0014] In a preferred embodiment, the sanitary fitting preferably comprises a one-piece fitting body, for example manufactured by die casting, in which the cold water line, the hot water line and a mixed water line leading from the mixing unit to a mixed water outlet are formed, wherein the valves and the mixing unit are arranged in the fitting body.

[0015] The invention and its technical context are explained below using the figures as examples. They show schematic representations. Figure 1 : a sectional view through a first embodiment of a sanitary fitting not encompassed by independent claim 1, Figure 2 : an exploded view of the sanitary fitting of the Figure 1 , Figure 3 : an exploded view of an embodiment of a sanitary fitting according to the invention, Figure 4 : a cross-sectional view through a section of the sanitary fittings Figure 3with the valves in a closed position and Figure 5 : the sectional view according to Figure 4 with the valves in an open position.

[0016] The sanitary fittings shown in the figures comprise a fitting body 9 with a cold water connection 1 and a hot water connection 2.

[0017] The valve body 9 has receptacles for a first valve 6, a second valve 7 and a mixing unit 3.

[0018] The valve body 9 includes a cold water line 4 leading from the cold water connection 1 to the receptacle for the mixing unit 3. The valve body 9 also includes a hot water line 5 leading from the hot water connection 2 to the receptacle for the mixing unit 3.

[0019] The first valve 6 is located in the cold water line 4 and the second valve 7 is located in the hot water line 5.

[0020] The valve body 9 also incorporates a mixed water line 11, which leads from the receptacle for the mixing unit 3 to a mixed water outlet 10.

[0021] The first valve 6 and the second valve 7 are designed so that they can only be switched between an open position to release the corresponding line and a closed position to shut off the corresponding line.

[0022] According to the exemplary embodiment of the Figure 1 and 2 In the device not covered by independent claim 1, the first valve 6 and the second valve 7 are each designed as solenoid valves which are electronically actuated. The corresponding electronic control is configured such that the first valve 6 and the second valve 7 are always simultaneously either open or closed.

[0023] According to the sanitary fittings of Figures 3 to 5The first valve 6 and the second valve 7 are designed as push valves, each having an actuating projection 6.1 and 7.1. The actuating projections 6.1 and 7.1 are rigidly connected to each other by an actuating element 8, so that the two push valves 6, 7 can only be switched between the open and closed positions together by a linear displacement of the actuating element 8.

[0024] In the Figure 4 In the position shown, the push valves 6 and 7 are closed. By linearly displacing the actuating element 8 by pressing the actuating button, the push valves 6 and 7 can be opened, with the open position shown in the Figure 5 is shown.

[0025] Mixing unit 3 is designed as a thermostatic cartridge, so that the mixed water temperature can be set solely via mixing unit 3, while the water flow can be started or stopped by actuating the first and second valves 6, 7. However, flow rate adjustment is not provided. Reference symbol list

[0026] 1 Cold water connection 2 Hot water connection 3 Mixing unit 4 Cold water line 5 Hot water line 6 First valve 6.1 Actuating element 7 Second valve 7.1 Actuating element 8 Actuating element 9 Valve body 10 Mixed water outlet 11 Mixed water line

Claims

1. Sanitary fitting having - a cold water connection (1), - a hot water connection (2), - a mixing unit (3), - a cold water pipeline (4) leading from the cold water connection (1) to the mixing unit (3), - a hot water pipeline (5) leading from the hot water connection (2) to the mixing unit (3), - a first valve (6) arranged in the cold water pipeline (4) and - a second valve (7) arranged in the hot water pipeline (5), wherein both the first valve (6) and the second valve (7) is exclusively switchable between an opening position and a closing position, characterised in that the first valve (6) and the second valve (7) are designed as mechanically operative push valves.

2. Sanitary fitting according to claim 1, wherein the first valve (6) and the second valve (7) are connected in such a way that the first valve (6) and the second valve (7) are simultaneously switchable between the opening position and the closing position.

3. Sanitary fitting according to claim 2, wherein the first valve (6) and the second valve (7) are mechanically or electronically coupled.

4. Sanitary fitting according to any one of the preceding claims, wherein actuation projections (6.1, 7.1) of the two push valves are mechanically connected by means of an actuating element (8).

5. Sanitary fitting according to any one of the preceding claims, wherein a check valve is not arranged upstream in the cold water pipeline (4), before the first valve (6).

6. Sanitary fitting according to any one of the preceding claims, wherein a check valve is not arranged upstream in the hot water pipeline (5), before the second valve (7).

7. Sanitary fitting according to any one of the preceding claims, wherein the mixing unit (3) is designed as a thermostat cartridge for adjusting a mixed water temperature.

8. Sanitary fitting according to any one of the preceding claims, wherein the valves (6, 7) and the mixing unit (3) are arranged in a fitting body (9) in which the cold water pipeline (4), the hot water pipeline (5) and a mixed water pipeline (11) leading from the mixing unit (3) to a mixed water outlet (10) are configured.