Water faucet

Abstract

The invention relates to a water faucet (1) for delivering water, which comprises at least a connection for supplying cold water, a connection for supplying hot water, an outlet (12) for delivering supplied water, and a mixing element for mixing supplied cold water and hot water. The invention also relates to setting device (2) for setting a mixing ratio of supplied hot water and cold water, which setting device has a cold-water setting (K) in which the mixing element delivers cold water, and at least one hot-water setting (W) in which the mixing element delivers hot water, and a device (3) for resetting the setting device (2) to the cold water setting (K) while or after shutting off the water delivery.

Description

[0001] TITLE

[0002] Water dispensing fitting

[0003] TECHNICAL FIELD

[0004] The application relates to a water dispensing fitting for dispensing water with at least one connection for cold water supply, one connection for hot water supply, an outlet for dispensing supplied water, and a mixing element for mixing supplied cold and hot water, wherein the water dispensing fitting also comprises: an adjusting device for adjusting the mixing ratio of supplied hot water and cold water, which has a cold water setting in which the mixing element dispenses cold water, and at least one hot water setting in which the mixing element dispenses warm water.

[0005] STATE OF THE ART

[0006] Common water dispensing fittings or faucets, such as modern single-lever mixers, tempt users to waste energy without them being aware of this problem. This results from the actual advantage of the single-lever mixer being able to close the faucet in any position. However, if the last temperature setting was for dispensing hot water or a mixture of hot and cold water, this usually results in the lever being opened again in exactly this mixing position the next time it is used to open the water tap. This means that even with short water withdrawals, hot water is always automatically drawn from the heater's hot water reservoir at the beginning. The user often does not benefit from this hot water withdrawal because the water withdrawal is relatively short, e.g.When washing hands, the hot water may not even reach the tap before the faucet is turned off. The hot water simply flows into a pipe and cools down again. This wastes hot water.

[0007] OBJECT OF THE INVENTION Based on this, the object of the present invention is to provide a water dispensing fitting that counteracts or prevents the waste of hot water.

[0008] TECHNICAL SOLUTION

[0009] This object is achieved by a water dispensing fitting for dispensing water according to claim 1 or claim 15. Advantageous embodiments of the invention emerge from the features of the dependent claims.

[0010] A water dispensing fitting according to the invention for dispensing water with at least one connection for cold water supply, a connection for hot water supply, an outlet for dispensing supplied water, and a mixing element for mixing supplied cold and hot water, further comprises: an adjusting device for adjusting the mixing ratio of supplied hot water and cold water, which has a cold water setting in which the mixing element dispenses (only) cold water, and at least one hot water setting in which the mixing element dispenses warm water.

[0011] It also comprises a device for resetting and / or returning the setting device to the cold water setting during or after the water supply is switched off and / or a device for blocking the setting device in such a way that the water supply can only be switched off when the cold water setting is used.

[0012] Essentially, the invention relates to fittings with a hot water-saving function. Resetting or returning the setting device to the cold water setting can be achieved, for example, mechanically or by an electronic and / or magnetic control (i.e., the selected temperature resets to exclusively cold water after a certain time, which is particularly interesting for public areas, e.g., toilet facilities), or by a manual control. In all cases, the selected temperature resets to exclusively cold water immediately or after a certain time, which is also particularly interesting for public areas, e.g., toilet facilities).

[0013] Generally, a closing pulse upon closing or an actuation of the water supply or water discharge resets the setting device to cold water discharge. This can occur during closing or after a certain period of time after the water discharge has been closed. In a preferred embodiment of the invention, the setting device is designed to switch the water discharge on and off and / or to adjust the amount of water discharged.

[0014] In particular, the amount of water supplied can be adjusted by the relative position of the lever element to the base body. However, the (amount of) water supplied or the amount of water withdrawn / dispensed, or an on / off function, can also be adjusted by another mechanical and / or electronic component (optical, touch, button, touchscreen).

[0015] In particular, the adjustment device comprises a lever element of a single-lever mixer, which is pivotally mounted relative to a base body of the water dispensing fitting. The invention relates in particular to single-lever mixers with a device or technology that ensures that only cold water is dispensed the next time water is drawn and / or that the user is informed that the adjustment device is set to also dispense warm water.

[0016] In principle, the single-lever mixer can only be used to adjust the mixing ratio (e.g. taps that only have a mixing lever, where water withdrawal is triggered by a sensor), or it can also be used to switch the water supply from the tap or the water withdrawal on and off by the user. For taps with a conventional single-lever mixer, a fundamental distinction is made between two designs: single-lever mixers with an opening function "water on / off" and single-lever mixers without an opening function. The latter designs have a separate mechanism for "water on / off". Here, "water on / off" can be achieved, for example, via a mechanical, electrical, or optical function. The device according to the invention for resetting to a cold water setting can be implemented in both of these designs.

[0017] However, the temperature can be controlled not only by a mixing lever, but also by other methods, e.g. a rotary knob or rotary valve

[0018] The mixing lever can also be designed either purely mechanically or in the form of a servomotor. If a servomotor or control valve is provided, the design can also be such that the servomotor automatically moves to the "cold water" position upon the removal of an electrical / optical / mechanical impulse from a sensor.

[0019] In the current state of the art, however, the last mixing position is usually retained when the tap is turned off. This means that this mixing position "ratio of hot and cold water" is often used again the next time the tap is used. This means that hot water is automatically drawn from the corresponding hot water tank the next time the tap is turned on. Whether the user benefits at all from drawing hot water depends on how long the water is drawn. With short-term water withdrawals, for example when washing hands, and with central water heating systems, the hot water from the hot water reservoir often does not even reach the tap because the water is drawn for too short a time. The drawn hot water remains in the hot water supply line and releases its heat into the pipes / the environment. This means that the user has used hot water unnecessarily and therefore wasted energy.

[0020] The blocking device may in particular comprise a blocking element such that the setting device is blocked in any position except the cold water setting (K) when the water supply is switched off.

[0021] Preferably, the device for resetting and / or returning the setting device to the cold water setting (K) during or after the water supply is switched off and / or the device for blocking the setting device is arranged on the mixing element. In addition to the alternative of the blocking device being mounted on the outside of the fitting housing, e.g., in a retrofit version, the device can also be arranged on / in the mixing element, in particular in the mixing cartridge.

[0022] The device for resetting the setting device to the cold water setting during or after the water supply is shut off may comprise at least a first element that blocks the water supply from shutting off in a position that does not correspond to the cold water setting. Thus, the first element may be arranged on the setting device.

[0023] Typically, the mixing cartridge has a type of ball joint. If the locking device is provided on the mixing element, the first element can be located on a head piece of the ball joint.

[0024] The device for resetting the setting device to the cold water setting (K) during or after the water supply is switched off can have at least a second element, wherein the first element and / or the second element has an engagement element and the other element has a recess complementary to the engagement element, wherein in the position corresponding to the cold water setting (K), the engagement element engages (positively) in the recess. Positive engagement means that in the closed position, no lateral rotation from the cold water setting is possible, while opening the water supply is possible. The first element can therefore, for example, have a projection or tooth directed towards the second element, while the second element has a recess which is adapted to the shape of the tooth and is aligned such that the tooth can only engage in the cold water setting.Accordingly, the first element can have a recess and the second element can have a tooth.

[0025] If the locking device is arranged in such a way that the first element is located on the adjusting device, the second element can be located on a stationary housing component of the valve. If the locking device is provided on the mixing element, the second element can be located on a socket of the ball joint. Typically, either the first or the second element is located on a movable component of the valve, and the other element is located on a stationary component of the valve.

[0026] The first element is specifically designed to mechanically block the switching off of the water supply in a position that does not correspond to the cold water setting.

[0027] In particular, the first element is connected to the lever element or to a movable component of the valve connected to the lever element, e.g. mixing element.

[0028] The device for resetting the setting device to the cold water setting may comprise a second element which is connected to the main body of the water dispensing fitting or to another stationary component of the fitting and which mechanically blocks the first element in a position which does not correspond to the cold water setting.

[0029] Since the first and / or second element can also be retrofitted, this solution is particularly suitable as a retrofit kit for existing installations. In principle, however, any of the embodiments of the invention can be provided both as a retrofit kit and as an integrated solution during the manufacture of a valve.

[0030] Preferably, the first and / or second element are made of silicone. The elasticity of silicone allows adaptation to the structural conditions of the fitting, particularly when retrofitting with the device according to the invention for resetting and / or returning the adjustment device to the cold water setting. The first and / or second element can be provided as an annular element or sleeve, which is attached to the lever element or the base (base body / housing) of the fitting or to the mixing element.

[0031] In particular, the second element has a horizontal upper sliding surface in the operating position, so that the nose can be moved horizontally along the sliding surface when the adjustment lever is moved between the hot and cold water settings. This allows a (constant) minimum water flow rate to be delivered across the hot water range in each hot water position.

[0032] For example, particularly as a retrofit kit, two attachable rings can be provided which are interlocked in the cold water setting when the tap is closed. This means that the tap can only be closed in the cold water position. The next time the tap is used, the user must therefore consciously decide to use warm water by swiveling the open tap sideways from the interlocked position. This design also creates a habituation effect for the user in that the user slides the tap all the way to the right (cold water only) when closing it. Furthermore, when the lever is disengaged (the lug does not engage in the recess), the position of the lever can be varied seamlessly and without effort between cold and warm water settings.

[0033] If the device according to the invention for resetting and / or returning the setting device to the cold water setting is placed in a visible manner, the user also sees that the tap can only be closed in a certain position, ie the user is shown in which position the water supply can be switched off.

[0034] In one variant, this position can simply be indicated - without the water supply being blocked in a hot water setting - e.g. by two arrows pointing towards each other on the first and second element. The cold water position is only reached as the closed position when the arrowheads are directly opposite each other. This variant can serve as a learning aid for a user to close the setting device in the desired cold water position or, if necessary, to first bring it into this position before opening the water supply. Furthermore, the invention as a whole fulfills a protective function by protecting users from inadvertently coming into contact with hot water when initially opening the tap.

[0035] In one embodiment of the invention, the adjusting device can have at least two actuating elements for adjusting the amount of hot water delivered or the amount of cold water delivered to the mixing element, wherein the device for resetting the adjusting device to the cold water setting during or after switching off the water delivery has a detection element for detecting the opening state of the actuating element for adjusting the amount of cold water, and an adjusting element for blocking the hot water supply to the mixing element.

[0036] In a special embodiment of the invention, in which the first element is an engagement element connected to the lever element, and the second element is an engagement element connected to the base body of the fitting and complementary to the first engagement element, the engagement elements can be arranged relative to one another in such a way that, when closing or shutting off the water supply, the engagement elements engage with one another (positively) only in the cold water position. Otherwise, shutting off is blocked.

[0037] The device for resetting the setting device to the cold water setting can be designed in such a way that when the cold water supply is switched off, the hot water supply to the mixing element or the water discharge is blocked, and when the cold water supply is switched on, the blockage of the hot water supply is lifted.

[0038] In a special embodiment of the invention, the water dispensing fitting may also have an actuating element for switching on and off and / or for adjusting the amount of water dispensed.

[0039] The device for resetting the adjusting device to the cold water setting during or after the water supply is switched off may comprise a reset or actuating mechanism which, after the water supply is switched off, resets an adjusting element to a position for blocking the hot water supply to the mixing element.

[0040] The device for resetting the setting device to the cold water setting upon or after the water supply is shut off may include a sensing element for sensing the water supply, which controls the reset or actuation mechanism. The reset or actuation mechanism may include an elastic reset element, a gravity-based reset element, and / or an electromagnetic reset element, e.g., with a servo motor.

[0041] In a further embodiment of the invention, the water dispensing fitting for dispensing water, having at least one connection for cold water supply, one connection for hot water supply, an outlet for dispensing supplied water, and a mixing element for mixing supplied cold and hot water, further comprises: an adjusting device for adjusting the mixing ratio of supplied hot water and cold water, which has a cold water setting in which the mixing element dispenses cold water, and at least one hot water setting in which the mixing element dispenses warm water, a sensor for detecting the setting of the mixing ratio of supplied hot water and cold water, and at least one signal output unit which, when activated by the sensor, outputs a visual and / or acoustic signal, for example, when the sensor is switched on and / or off orWhen the water supply stops, a setting other than the cold water setting is detected on the setting device.

[0042] For example, an electronic check with a sound / light indicator can be implemented. If warm water is drawn when the faucet is turned on or opened, a warning is given to the user. This can be visual (e.g., an LED in the user's field of vision or on the faucet), acoustic, or tactile (e.g., a vibration of an actuating device).

[0043] In this embodiment, the fitting, e.g. the single-lever mixer, can have at least one device for indicating a position of the lever element in a hot water position.

[0044] In principle, the features described above can be combined as desired within the scope of the invention. For example, the lever position and / or the mixing ratio can be monitored by a mechanical and / or electronic and / or optical sensor.

[0045] The basic idea of ​​the invention is that the setting device is initially set to "cold water" each time water is drawn. "Hot water" can then also be selected or set. After the water withdrawal or discharge through the fitting is interrupted or terminated, the setting device is returned or reset to the cold water setting, either mechanically or automatically (e.g., linked to the last "closing" and / or "timeout").

[0046] To maintain the water temperature during short interruptions, especially accidental interruptions, a delay can be integrated. In the "mechanical versions," the delay can be achieved using, for example, spring strength, a return weight, and / or the flow rate from the water chamber.

[0047] For faucets with electronic control, e.g. infrared, the actuation signal can be used to control the return to the “cold position,” e.g. by electromagnetic control of a servo motor.

[0048] SHORT DESCRIPTION OF THE CHARACTERS

[0049] Further features and advantages of the invention will become apparent from the following description of preferred embodiments with reference to the figures, in which:

[0050] Figures 1a, 1b show a representation of a first embodiment of an inventive

[0051] Faucet in different settings;

[0052] Figures 2a, 2b show a representation of a second embodiment of an inventive

[0053] Faucet in different settings;

[0054] Figures 3a, 3b show a representation of a third embodiment of an inventive

[0055] Faucet in different settings;

[0056] Figures 4a, 4b show a representation of a fourth embodiment of a fitting according to the invention in different settings;

[0057] Figure 5 is a schematic representation of a fifth embodiment of the invention;

[0058] Figure 6 is a schematic representation of a sixth embodiment of the invention;

[0059] Figure 7 is a schematic representation of a seventh embodiment of the invention;

[0060] Figure 8 is a schematic representation of an eighth embodiment of the invention;

[0061] Figure 9 is a schematic representation of a ninth embodiment of the invention;

[0062] Figure 10 shows a representation of a fitting with the base body removed

[0063] adjustment device;

[0064] Figure 11 is a plan view of the base body with the

[0065] adjustment device;

[0066] Figures 12a and 12b show a mixing cartridge of a fitting in two different settings; Figures 13a-13c show an embodiment of the invention in which the locking device is provided on a mixing element of the fitting.

[0067] DETAILED DESCRIPTION OF SPECIAL EXAMPLES

[0068] Water dispensing fittings according to the invention are described with reference to the accompanying figures. Identical reference numerals in different figures refer to the same elements. A sensible combination of the features of the embodiments is explicitly intended to be within the scope of the invention.

[0069] Figures 1a, 1b, 2a, 2b, 3a, 3b, 4a, 4b each show an embodiment of a water dispensing fitting 1 according to the invention, here a single-lever mixer, with a functionality that allows closing only in the "cold" position (cold water setting K), while in a hot water setting W or in any intermediate setting between cold water setting K and hot water setting W, water always flows out of a water outlet 12, ie the tap is open.

[0070] The water dispensing fitting 1 comprises a base body 10 in which a mixing element (not shown) is provided. However, the mixing element can also be arranged outside the base body.

[0071] A line 11 with a water outlet 12 for discharging water which has passed through the mixing element is connected to the base body 10.

[0072] In addition, an adjustment device in the form of a lever element 2 is attached to the base body 10. The lever element 2 is pivotally mounted on the base body 10 and can be pivoted in a first angular range to the left and right between the hot water setting W and the cold water setting K (rotation in a first plane), as well as up and down between a closed position V and an open position O (rotation in a second plane).

[0073] In addition, the water dispensing fitting 1 has a device 3 for returning or resetting the setting device to the cold water setting K when the water dispensing is closed. In the first four exemplary embodiments, this is implemented such that closing the lever element from an open position O (left image) to a closed position V (right image) is only possible if the lever element 2 is simultaneously arranged in the cold water setting K. The open position O and the closed position V are planes in which a reference point P of the lever element 2 is located, depending on the lever position. The device 3 has a first element 31 rigidly connected to the lever element 2 and having a projection 310, as well as a second element 32 rigidly connected to the base body 10 and having a groove 320 approximately complementary to the projection 310.The projection 310 and the groove 320 are aligned relative to each other such that they can only engage when the lever element 2 is in the cold water setting position K. When the projection 310 and the groove 320 are engaged by the lever actuation (right image), the water outlet closes. Otherwise, closing the water outlet is blocked (left image).

[0074] This ensures that the dispensing valve 1 cannot be closed in the hot water setting W or in an intermediate position between the hot water setting W and the cold water setting K, but only in the cold water setting K. The next time the water dispensing is opened, the mixing element will automatically dispense cold water until the lever element 2 is pivoted towards the hot water setting, if necessary. This means that when the lever element 2 is initially actuated, the mixing element does not draw any hot water from a hot water reservoir, which the user may not actually need. This helps prevent wasting hot water.

[0075] Device 3 can be provided as a retrofit variant or as part of a new water dispensing fitting.

[0076] The differences between the embodiments are described below.

[0077] In the first embodiment (Fig. 1a, 1b), the elements 31, 32 are designed as annular attachments that are fastened to the lever element 2 and the base body 10, respectively. An integral design of the functional principle, e.g., in the new manufacture of a fitting, would also be conceivable. The projection 310 and the groove 320 have a rectangular contour. Any other shape is also conceivable, e.g., semicircles or a triangular shape. This may then create a "slip / guiding effect" by which the projection 310 is guided into the groove 320.

[0078] In the second embodiment (Figs. 2a, 2b), elements 31, 32 are also designed as rings or ring sections. The first element 31 is attached to the lever element 2, and the second element 32 is attached to the base body 10, with the second element 32 resting on or against the extension of the line 11.

[0079] In the third embodiment (Figs. 3a, 3b), the device 3 has only a first element 31 with a projection 310. The projection 310 is aligned on the lever element 2 such that in the cold water setting K (right image) it is arranged next to the neck of the line 11 (in the closed position V), while in the hot water position W and in intermediate positions in the opening position O of the lever element 2 it rests on or rests on the surface of the neck of the line 11, thus blocking the lever element 2 in the opening position O.

[0080] The fourth embodiment (Figs. 4a, 4b) essentially corresponds to the second embodiment. However, in this case, the second element 32 is designed without a groove. Instead, the second element 32 has a continuous contour (tapering) that continuously corresponds to the cold water setting K, preventing closure in the hot water position. When the lever element 2 is closed and returned to the closed position V, the projection or pin 310 of the first element 31 is guided next to the contour of the second element 32 into the cold water position K. Complete closure is only possible in the cold water position K.

[0081] The device 3 for resetting the adjustment device to the cold water setting K can be provided as a retrofit kit. However, an integral implementation of the functional principle would also be conceivable in all embodiments, e.g., in the new manufacture of a fitting according to the invention.

[0082] Figures 5, 6, 7 show further embodiments of the invention, wherein in particular the mechanism for preventing or returning the lever element 2 from a hot water position W or an intermediate position to the cold water position K during or after closing the water outlet is shown.

[0083] The fitting 1 has a hot water supply 40 and a cold water supply 41. These are selectively opened or closed more or less, depending on the set mixing ratio, by an adjusting element 5. The adjusting element 5 (e.g., a slide valve with flow openings) is connected to the lever element 2. The adjusting element 5 is connected to a return element 50, which pushes the lever 2 into the cold water position K if no corresponding counterforce is exerted on the lever 2. If a counterforce is exerted by actuating the lever element 2 and water flows, the lever element 2 is blocked in the set position.

[0084] In embodiments five, six, and seven, the adjusting element 5 is shown in the cold water position. Pressing the mixing lever 2 moves the adjusting element 5, allowing hot water to flow through the adjusting element 5. In the case of Fig. 5, the return element is shown in the form of a spring 50; in the case of Fig. 6, the return is effected by gravity (represented by a weight 51); in the case of Fig. 7, it is effected by an (electromagnetically) generated force 52 (e.g., an electromagnet control, a servomotor).

[0085] In the seventh embodiment, the reset is triggered by an electrical, optical, and / or mechanical pulse from a sensor, which can be located, for example, in the cold water inlet and / or outlet (e.g., a water chamber). As soon as no water flow is measured, the setting element 5 is reset.

[0086] A valve 6 controls the water output from the water outlet 12. It does not matter how the valve 6 is actuated or controlled (mechanically, electrically, optically, etc.).

[0087] In addition, a locking element 7 is provided to block the return of the lever element 2 and the adjusting element 5 coupled to it to the "cold water" position when the lever element 2 and thus the adjusting element 5 have been pushed from the cold water position K towards the hot water position W. The locking element 7 is controlled, for example, by the filling state of a water chamber using a sensor 70. The water chamber is filled by outflowing water. After the water is turned off, the water chamber empties. By detecting this state by the sensor 70 and controlling the locking element 7, the adjusting element 5 is released, and the return element 50, 51, 52 can return the slide 5 to its original "cold" position. Depending on the design, a separate emptying of the water chamber may be required when the water supply is switched off, e.g., into the water outlet 12.

[0088] The eighth embodiment shown in Figure 8 depicts a water dispensing fitting 1 with two actuating elements 20, 21 (valves, taps) for turning cold and hot water on and off. This is a faucet with separate hot and cold water controls. An adjusting element 5 can shut off the hot water supply 40.

[0089] By turning the actuating element 21 for cold water, the blockage of the hot water supply is released. Only then can hot water flow and be mixed in the mixing element. By closing the actuating element 21 for cold water, the adjusting element 5 is closed again and the flow of hot water is automatically stopped. It is also conceivable for the actuating element 20 for hot water to be blocked in the closed state when the cold water supply is switched off or closed. Only by turning the cold water tap 21 is the rotary function of the hot water tap 20 released again. The ninth embodiment of the invention according to Figure 9 relates to a water dispensing fitting 1 with a known single-lever mixer. In addition, the fitting 1 has a sensor 8, which can be present as a retrofit kit or as an integral part of the fitting 1.In addition, a signal output unit 9 is provided, which can output an optical and / or acoustic signal when activated by the sensor 8. In this exemplary embodiment, the sensor 8, which is arranged on the lever element 2, scans the surface of the base body 10 below the sensor 8. If, as shown in Fig. 9, the sensor 8 is located in the circumferential direction at the height of a sensor or reference field 80 when the actuating element is set in the cold water position K, it is detected that only cold water is being dispensed with this setting. In this case, no optical and / or acoustic signal is output. If the evaluation of the position of the sensor 8 relative to the reference field 80 shows that the lever element 2 is positioned such that warm water is (also) being drawn (warm water position W of the sensor or an intermediate position between W and K), the signal output unit 9 outputs a visual and / or acoustic warning.

[0090] Figure 10 shows a fitting 1 with reference numerals according to Figures 1a to 4c, wherein the adjusting device 2 is removed from the base body 10. Within the base body 10 is a mixing cartridge M (cf. Figures 11, 12a, 12b) with a coupling pin M1 for coupling to the adjusting device 2.

[0091] Figure 11 shows a top view of the base body 10 with a mixing cartridge M. The mixing cartridge M has the coupling pin M1 already visible in Figure 10. This pin protrudes from the top side M2 ​​of the mixing cartridge M.

[0092] Figures 12a and 12b show the mixing cartridge M, with the coupling pin M1 protruding from the upper pin M2 of the cartridge M in two different positions. These positions correspond to two positions of a (coupled) lever 2 of a single-lever mixer.

[0093] Figures 13a-13c show an embodiment of the invention in which the device 3 for resetting the setting device to the cold water setting K is provided in the form of a blocking element on the mixing cartridge (mixing element) M of the fitting. The blocking element is shaped and positioned in the pivoting range of the coupling pin M1 on the top side M2 ​​of the cartridge M such that the coupling pin M1 is blocked in every position except the cold water setting (K) when the water supply is switched off. The blocking element can be arranged / attached as an insert on the top side M2 ​​of the cartridge housing M3 or integrated into the housing M3.

[0094] Figure 13a shows a cold water position of the coupling pin M1, and Figure 13b a hot water position. Figure 13c schematically illustrates the "cold" position in a top view, with the water supply being shut off in this position of the coupling pin M1. In the "hot" position, however, the shutoff is blocked by device 3.

Claims

PATENT CLAIMS E Water dispensing fitting (1) for dispensing water, having at least one connection (21) for cold water supply, one connection (20) for hot water supply, an outlet (12) for dispensing supplied water, and a mixing element for mixing supplied cold and hot water, wherein the water dispensing fitting (1) comprises: an adjusting device (2, 5; 20, 21) for adjusting a mixing ratio of supplied hot water and cold water, which has a cold water setting (K) at which the mixing element dispenses cold water, and at least one hot water setting (W) at which the mixing element dispenses warm water, and a device (3; 5, 50, 51, 52) for resetting and / or returning the adjusting device (2, 5; 20, 21) to the cold water setting (K) during or after switching off the water supply and / or a device for blocking the adjusting device such that switching off the water supply is only possible with the cold water setting is.

2. Water dispensing fitting (1) according to claim 1, wherein the adjusting device (2; 20, 21) is designed to switch the water dispensing on and off and / or to adjust the amount of water dispensed.

3. Water dispensing fitting (1) according to claim 1 or 2, wherein the adjusting device (2) comprises a lever element of a single-lever mixer, which is pivotally mounted relative to a base body (10) of the water dispensing fitting (1).

4. Water dispensing fitting (1) according to one of the preceding claims, wherein the device for blocking comprises a blocking element such that the setting device (2, 5; 20, 21) is blocked in any position except the cold water setting (K) when the water dispensing is switched off. Water dispensing fitting (1) according to one of the preceding claims, wherein the device (3; 5, 50, 51, 52) for resetting and / or returning the adjusting device (2, 5; 20, 21) to the cold water setting (K) during or after the water dispensing is switched off and / or the device for blocking the adjusting device is arranged on the mixing element. Water dispensing fitting (1) according to one of the preceding claims, wherein the device (3) for resetting the adjusting device (2) to the cold water setting (K) during or after the water dispensing is switched off has at least one first element (31, 310) that blocks the switching off of the water dispensing in a position that does not correspond to the cold water setting (K).Water dispensing fitting (1) according to claim 6, wherein the device (3) for resetting the setting device (2) to the cold water setting (K) during or after the water dispensing is switched off comprises at least one second element (32, 320), wherein the first element (31, 310) and / or the second element (32, 320) has an engagement element (310) and the other element has a recess (320) complementary to the engagement element (310), wherein in the position corresponding to the cold water setting (K), the engagement element (310) engages in the recess (320). Water dispensing fitting (1) according to claim 6, wherein the first element (31, 310) mechanically blocks the switching off of the water dispensing in a position not corresponding to the cold water setting (K). Water dispensing fitting (1) according to claim 1 or 2, wherein the adjusting device (20, 21) has at least two actuating elements (20, 21) for adjusting the amount of hot water dispensed orthe amount of cold water delivered to the mixing element, wherein the device (5) for resetting the setting device (20, 21) to the cold water setting (K) during or after switching off the water delivery has a detection element for detecting the opening state of the. Actuating element (21) for adjusting the cold water quantity, and an adjusting element for blocking the hot water supply and / or the hot water setting to the mixing element.

10. Water dispensing fitting (1) according to claim 9, wherein the device (5) for resetting the setting device (20, 21) to the cold water setting (K) is designed such that when the cold water supply is switched off, the hot water supply to the mixing element is blocked and / or the hot water setting is closed, and when the cold water supply is switched on, the blockage of the hot water supply / hot water setting is lifted.

11. Water dispensing fitting (1) according to claim 1 or 2, wherein the water dispensing fitting (1) comprises: an actuating element for switching on and off and / or for adjusting the amount of water dispensed.

12. Water dispensing fitting (1) according to claim 11, wherein the device (5, 50, 51, 52) for resetting the setting device to the cold water setting (K) during or after the water dispensing is switched off comprises a reset or actuating mechanism which, after the water dispensing is switched off, resets a setting element (5) into a position for blocking the hot water supply to the mixing element.

13. Water dispensing fitting (1) according to claim 11 or 12, wherein the device (5, 50, 51, 52) for resetting the setting device to the cold water setting (K) during or after switching off the water dispensing has a detection element (70) for detecting the water dispensing, which controls the reset or actuating mechanism.

14. Water dispensing fitting (1) according to claim 12 or 13, wherein the return or actuating mechanism comprises an elastic return element (50), a gravity-actuated based return element (51), and / or an electromagnetic return element (52), optionally with a servo motor.Water dispensing fitting (1) for dispensing water, having at least one connection (41) for cold water supply, one connection (40) for hot water supply, an outlet (12) for dispensing supplied water, and a mixing element for mixing supplied cold and hot water, wherein the water dispensing fitting (1) has: an adjusting device (2, 5; 20, 21) for adjusting the mixing ratio of supplied hot water and cold water, which has a cold water setting (K), at which the mixing element dispenses cold water, and at least one hot water setting (W), at which the mixing element dispenses warm water, a sensor (8) for detecting the setting of the mixing ratio of supplied hot water and cold water, and at least one signal output unit (9), which, when activated by the sensor (8), outputs a signal, in particular an optical and / or acoustic signal, when the sensor is switched off or on.When the water supply stops, a setting other than the cold water setting (K) of the setting device (2, 5; 20, 21) is detected.

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