WO2022090365A1

WO2022090365A1 - Flushing device, water outlet fitting, and flushing method

Info

Publication number: WO2022090365A1
Application number: PCT/EP2021/079929
Authority: WO
Inventors: Langendijk ROB
Original assignee: Wwb Sweden Ab
Priority date: 2020-10-29
Filing date: 2021-10-28
Publication date: 2022-05-05
Also published as: EP4237633A1; DE202020106196U1

Abstract

The invention relates to a flushing device (6) and to a method for flushing a water outlet fitting (3), having a fitting body (9) with, arranged therein, a supply pipe (18) for supply water (7), and having a fitting head (10) arranged at one end of the fitting body (9), and having at that location a tap outlet (11) for supply water (7). The flushing device (6) comprises a discharge pipe (19) for used flushing water (8), which pipe is connected at one pipe end (20) to the fitting head (10), preferably close to the supply pipe (18), the flushing device (6) having a pipe shut-off (33) on the discharge pipe (19) and a flush control (16) which remotely controls the pipe shut-off (33) and thus opens and closes the discharge pipe (19).

Description

DESCRIPTION

Flushing device, water outlet fitting and flushing process

The invention relates to a flushing device, a water outlet fitting and a flushing method with the features in the preamble of the independent claims.

Such a flushing device and a water outlet fitting equipped with it are known from DE 20 2011 001 837 U1. The water outlet fitting has a fitting body and a fitting head which is arranged at the end on the fitting body and has a tap outlet there. A supply line for inlet water is arranged in the body of the fitting and is connected to the head of the fitting. A flush water discharge line is connected to the faucet head with one line end adjacent to the inlet water supply line. The supply line and the discharge line, which is not described in detail, open out at a valve chamber located in the hollow fitting head and at a valve arrangement there. The valve arrangement is arranged between the supply and discharge lines and the dispensing outlet. The previously known rinsing device enables automatic rinsing of the water-carrying lines using a disinfecting liquid and is controlled by different feed pressures on the feed line, with the valve arrangement being switched over by the different feed pressures.

DE 10 2004 023 968 A1 111gt a bottled water system that includes an electrically operated limit valve with a piston, which is slidably disposed in a housing. A spigot and a drain line are connected to the outside of the housing. The piston is displaced by the limit switch valve in the housing and has an internal line which is connected to the upstream side connected to a flexible supply line for table water, superheated steam and disinfectant. Depending on the position of the piston, the internal line can be connected to the tapping nozzle or to the drain line on the outflow side. It is the object of the present invention to provide an improved flushing technique. The invention solves this problem with the features in the independent claims. The flushing technology claimed, ie the flushing device, the flushing method, the water outlet fitting equipped with a flushing device and the water outlet system, have various advantages. The flushing device is provided and designed for a water outlet system with a water outlet fitting, which has a fitting body with a feed line for inlet water arranged therein and a fitting head arranged at the end of the fitting body and a tap outlet there for inlet water. The supply line is connected to the fitting head. The rinsing device has a discharge line for rinsing waste water, which can be or is connected with its one line end to the fitting head, preferably next to the feed line. The flushing device includes a remotely controllable line closure on the discharge line and a flush control, the remotely controllable line closure being connected to the flush control. The line lock opens and closes the discharge line in a controlled manner. A valve chamber with a valve arrangement can be arranged in the fitting head. The supply line and the discharge line can open out at the valve chamber and be connected here. The water outlet fitting is equipped with the flushing device. The water outlet system includes the water outlet fitting and can have a collecting device for tapped inlet water and a drain.

With the flushing device, the water outlet fitting and the water lines connected here can be flushed with running water. The rinsing process can be carried out automatically. If there is standing water in a pipe, germs can form and/or spread. By flushing with the supply water for a certain period of time, these can be flushed out and drained off. The germ-laden discharged water is referred to as rinsing waste water.

The rinsing device and the rinsing method can be self-contained. They can be retrofitted or converted to existing water outlet fittings or water outlet systems. On the other hand, implementation in a water outlet fitting and in a water outlet system during manufacture and original equipment is possible.

The flushing technology claimed can be used advantageously with the most varied types of water outlet fittings and water outlet systems. These can be fittings and systems in the sanitary area and/or in the household area, in particular in the kitchen area. Use in the catering sector or in the medical sector is also an advantage.

A water supply can be present in the water outlet system in the form of a building's own and/or possibly local line network, which can also be flushed by the flow of the inlet water. On the other hand, it can be used with other water-carrying plants and systems, for example drinking water, Mineral water, healing water or the like. can be tapped. These can be systems in the catering sector, spa area or the like. The water supply may include a source, tank, pump systems, and the like.

A further advantage of the claimed rinsing technology is the possibility of carrying out rinsing processes in a remote-controlled and fully automatic manner. These can take place in a certain rhythm or on certain occasions, which are specified, for example, by hygiene rules or the like. If the water outlet fitting is not used for a longer period of time, a rinsing process can be carried out as a so-called stagnation rinsing, e.g. to avoid contamination in the standing water column. For this purpose, operations of the water outlet fitting can be detected and logged with time recording. The rinsing processes can take place outside the normal usage times of the water outlet fitting and the water outlet system, e.g. at night. Due to the fully automatic system, there is no need for manual intervention on the water outlet fitting or on the upstream pipe system. It is also favorable if the water outlet fitting itself can be remotely controlled and, in particular, has remotely controllable valves.

Furthermore, it is advantageous that the flushing technology claimed can be operated on an existing water supply network, in particular with a connection to a public water supply network. For flushing it is not necessary to change the feed pressure on the supply line and in the upstream water supply controlled by a pump system or the like. The flushing technology claimed can be used with an existing and, in particular, constant feed pressure for the inlet water. The flushing technique claimed has the advantage that it can prevent retrograde contamination of the feed line for feed water and at least an upstream part of the discharge line for the flushing waste water. The remote controllable blocking of the discharge line is of particular advantage for this. It prevents access of germs from a drain and from a downstream part of the drain line.

Remotely locking the drain line can have another benefit. It can be used to control a valve arrangement on the water outlet fitting and to switch the inlet water between a tap outlet of the outlet fitting and said discharge line. The valve arrangement can be switched back and forth between a tapping position and a flushing position, with the inlet water being directed to the tap outlet or to the discharge line. If the discharge line is blocked, the dynamic pressure or the effective water pressure on the valve arrangement can be changed by backwater water and cause it to switch to the tap position. Opening the discharge line can switch to the flushing position. The rinsing processes can be carried out independently. You will also not be disturbed by manual operation of the water outlet fitting. As long as the drain line and the line lock are open, the flushing position remains and no water escapes from the tap outlet. The remote-controllable blocking of the discharge line also enables the water outlet fitting and the feed line for the feed water to be operated with a constant feed pressure.

The two advantages can be coupled, but do not have to be. The flushing technology claimed and the remote-controllable blocking of the discharge line can also be used to avoid germs in a flushing device according to the prior art, eg DE 20 2011 001 837 Ul, can also be used. The switching of the valve arrangement is then effected in a different way.

There is also the option of using fresh water for rinsing. This can also have any temperature. On the other hand, it is possible to use a specially conditioned supply water, e.g. a disinfectant solution or hot water.

The flushing device claimed has a remotely controllable line closure on the discharge line and a flushing control. The remote-controllable line closure is signal-connected to the flushing control. It is preferably arranged on the discharge line at a distance from the end of the line for connection to the fitting head. The remotely controllable line closure can be arranged in the discharge line between line ends. In the flushing method claimed, the discharge line can be blocked and opened by remote control by the flushing device. This can be done at a distance from said line end on the fitting head and at a distance from a valve assembly on the fitting head.

The flushing control can be arranged externally or possibly integrated in the line closure. The remote controllable line closure can be actuated by the flush control. This can be done in response to an external or an internal trigger signal. An internal signal can be emitted, for example, via a timer in the line closure and/or in the flushing control. An external trigger signal from a manual remote control, a higher-level controller, such as building control, or the like. come. In addition, direct manual operation of the remote-controllable line closure on site, for example using a hand wheel or the like, is not ruled out. The discharge line for flushing water can be connected to a fitting head of a water outlet fitting with one line end next to the feed line for the inlet water. This can include different arrangement and connection variants, for example a separate arrangement of the discharge line and the supply line at a distance from one another on the fitting head or an arrangement of the lines inside one another.

The discharge line and the supply line can open out and be connected to a valve chamber in the fitting head. A valve assembly may be located in the valve chamber. The discharge line and the feed line can open out and be connected to the valve arrangement.

The remotely controllable line closure can prevent retrograde contamination of the upstream discharge line and also the supply line and the valve arrangement on the water outlet fitting. The said distance is an advantage for this. The other end of the line leading to the drain can be short.

Said distance also enables a better and less disruptive accommodation of the remotely controllable line closure. It can be arranged separately from the fitting head and in particular outside the water outlet fitting. He then also has more space available, which is particularly advantageous in the case of a multi-part design. The remote controllable line plug can be installed close to the drain. The other end of the line leading to the drain can optionally be integrated into the line closure.

The remotely controllable line closure can have a germ barrier. This can be designed in different ways. It can be in one piece or in several pieces be. In particular, recontamination from a drain can be avoided to which the discharge line can be connected with the downstream end of the line.

The remotely controllable line closure can have a remotely controllable valve which opens and closes or blocks the discharge line. The valve can be signal-connected to the flushing control. In particular, it can be designed as a solenoid valve.

The remote controllable line closure may include one or more other claimed components. These can be used individually or together to form the germ barrier or for other purposes. A germ barrier can optionally be formed in a different way.

A claimed component can be a non-return valve, for example, which is preferably downstream of the remotely controllable valve in the direction of flow. The non-return valve blocks the backflow of rinsing waste water and back-contamination from the drain and can protect the remote-controlled valve from this. The check valve may be formed from a germicidal material.

The remotely controllable line closure can also have an aerator. This can be downstream of the check valve in the direction of flow. The aerator can also be formed from a germicidal material.

The remotely controllable line closure can include a jet catcher with a funnel, which is preferably connected downstream of the jet regulator in the direction of flow. There may be a free space through which the jet of flushing water emitted by the aerator flows and is then captured by the funnel. One The bundling and smoothing of the jet by the jet regulator is advantageous for this.

The jet stop can also include a detector for detecting a possible backlog of rinsing waste water. A backwater can occur, for example, if the drain is clogged. The back pressure can form in the aforementioned free space and is detected early by the detector before it adversely affects the upstream components of the remotely controllable line closure.

The detector can be designed in different ways, e.g. as an electrical fluid switch. It can be signal-connected to the flushing control. In the event of a backflow, the flushing control can actuate and close the valve of the line closure to prevent backflow of flushing waste water. The flush control can also abort the flushing process. However, it is also possible that it switches over the valve arrangement and possibly releases supply water still laden with rinsing residues via the tap outlet.

The remotely controllable line closure can have a common housing for the aforementioned components. This enables a compact design and easy assembly as well as space-saving accommodation.

The rinsing device can also have a disinfection device, which can be connected or is connected to the supply line for inlet water. As a result, the inlet water can be conditioned and can form a disinfecting solution. The disinfection device can be signal-connected to the flushing control. Another conditioning option is to use hot feed water. The valve arrangement for switching between tapping and flushing can be designed in different ways. It can be switchable by water pressure. An aforementioned valve arrangement that can be switched by the remotely controllable line closure is particularly favorable. There are several design options for this. These are advantageous for the flushing technology claimed and can also each have their own inventive significance.

The valve arrangement for switching between tapping and flushing can be part of the flushing device. When retrofitting or converting an existing water outlet fitting, it can be exchanged for an existing valve or converted.

The valve arrangement can have a directional control valve, e.g. a 2/3-way control valve, in various configurations. On the one hand, an embodiment as a pressure switching valve according to DE 202011 001 837 U1 is possible.

On the other hand, the directional control valve can be designed as a float valve. The float valve can be switched particularly well using the remote-controlled line closure. The valve design has an independent inventive importance and can also be used in other water-carrying facilities.

In a further variation, the valve arrangement can have an outlet valve which can be arranged or is arranged in the direction of flow behind the discharge line and the supply line on the one hand and in front of the tap outlet of the water outlet fitting on the other hand. Such an outlet valve also has an independent inventive significance. The rinsing control can start and end the rinsing processes independently. For this purpose, on the one hand, it can be connected to the remotely controllable line closure and can also transmit control signals.

The flush control can also be connected or connected to a remotely controllable actuating device of the water outlet fitting. This enables the supply water to be controlled remotely. The flushing control can be connected to a fitting control that may be present for a remotely controllable water outlet fitting. In particular, it can be implemented in a valve control. Conversely, a valve control can also be implemented in a flush control, e.g. in the case of a retrofit or conversion, in which case the outlet valve is also converted.

The flushing control can be designed as an independent hardware component or as a software module. A manually operated water outlet fitting can be retrofitted with a remote controllable operating device. A remotely controllable actuating device can have one or more remotely controllable valves or other closure elements which can be activated by the flushing control for a flushing process.

The flushing control can control several remotely controllable line closures and, if necessary, several water outlet fittings. It can also include a communication unit for wired and/or wireless communication to the outside, e.g. with a higher-level controller of a water outlet system.

Further advantageous refinements of the invention are specified in the dependent claims. The invention is shown by way of example and schematically in the drawings. Show in detail:

Figure 1: a water outlet system with a

Water outlet fitting and with a flushing device and a line closure,

Figure 2: a variant of the water outlet fitting,

Figure 3: a schematic representation of the line closure and its components,

Figure 4 and 5: a valve arrangement for the water outlet fitting in tap and flush position,

Figure 6 and 7: a variant of a valve assembly in dispensing and flushing position and

FIGS. 8 and 9: a further variant of a valve arrangement in the dispensing and flushing position.

The invention relates to a rinsing device (6) and a rinsing method, as well as a water outlet fitting (3) with the rinsing device (6) and a water outlet system (1) with a water outlet fitting (3) and a rinsing device (6).

Figure 1 shows a water outlet system (1) in a schematic representation. This has a water supply (2) for inlet water and an associated water outlet fitting (3) and a

Collecting device (4) and a flushing device (6). The water outlet fitting (3) is used to tap the inlet water (7), which at a tap outlet (11) of Water outlet fitting (3) exits. The inlet water (7) is, for example, fresh water from a private or public water supply network (2). The inlet water (7) can have a selectable temperature. The water outlet system (1) can include several water outlet fittings (3), collecting devices (4) and flushing devices (6).

The water outlet system (1) is designed as a sanitary system in the embodiment shown. The water outlet fitting (3) can be designed as a faucet, as a shower head or in some other way. The collecting device (4) collects the inlet water (7) emerging from the tap outlet (11). It can have a basin or tub shape and an attached termination (5) with a siphon (44). The siphon (44) forms an odor trap and has a line elbow with water. Alternatively, a different design of the siphon (4) or odor trap is possible. The conclusion (5) is further connected to a sewage system. The aforementioned basin can be designed as a washbasin, sink, shower tray, bathtub or in some other way.

The water outlet fitting (3) can be connected directly to the water supply (2). In the embodiment shown, a fluid control (45) is interposed. The fluid control (45) can contain valve technology for controlling the inlet water (7). The valve technology is not shown. Alternatively or additionally, it can be located elsewhere, e.g. on or in the water outlet fitting (3).

The valve technology can, for example, have a check valve, a quantity control valve, a mixing valve and the like. The inlet water (7) can consist of cold or tempered water. The cold water and the hot water can from the water supply (2) and/or the fluid control (45) via possibly separate water lines and carried on. Cold and hot water can be mixed at the water outlet fitting (3) or at the fluid control (45), with a mixing valve being used if necessary.

The fluid control (45) can include other components, e.g. a heater for the inlet water and/or a supply of other fluids, e.g. soap, disinfectant, lotion or the like. These fluids can also be dispensed at the water outlet fitting (3). If hot water mixing occurs in the fluid control (45), this is via a single

Mixed water line connected to the water outlet fitting (3). Said one or more lines form a supply line (18) for the inlet water (7), which is laid in the water outlet fitting (3).

The water outlet fitting (3) can have a different shape and design. It has an actuating device (13) for controlling the water delivery. Figures 1 and 2 show two variants of this.

The actuating device (13) can have a mechanical operating means (14), for example according to FIG. The mechanical operating means (14) is operated manually to control the inlet water (7). In addition, a sensor system (15) can be arranged at a suitable point on the water fitting (3).

FIG. 2 shows a variant of the water outlet fitting (3), which is designed according to WO 2008/077620 A1, for example. The actuating device (13) has a sensor system (15) on the fitting head (10) which, together with a remotely controllable valve technology and a fitting control ( 17) enables contactless operation of the water outlet fitting (3).

The sensor system (15) can have one or more sensors for operation and command input. These can preferably be operated without contact and are designed, for example, as diffuse reflection sensors based on infrared. The actuating device (13) can also include a display (53) indicated in FIG. 2, on which the water temperature, operating and functional instructions for the sensors (15) or similar information can be displayed.

The water outlet fitting (3) can be on the

collection device (4), e.g. at the edge of the pool. It can have a fitting body (9) and a fitting head (10) at the end with a tap outlet (11) and an outlet opening (12) for the inlet water (7). The fitting body (9) is tubular with an inner cavity. It can be shaped in different ways. FIG. 1 shows an angled variant and FIG. 2 shows a variant with a curved outlet pipe.

The supply line (18) enters the fitting body (9) from below, for example, and is laid up to the fitting head (10). A valve arrangement (23) is arranged on the fitting head (10) close to the dispensing outlet (11). This can be located in an internal valve chamber (22) of the fitting head (10). Figure 4 to 7 illustrate their training.

The rinsing device (6) has a discharge line (19) for rinsing waste water (8), a remotely controllable line closure (33) and a rinsing control (16). The flushing device (6) can have other components. The discharge line (19) serves to discharge the rinsing waste water (8). It is also in the body of the fitting

(9) and e.g. laid parallel to the supply line (18). The discharge line (19) can be or is connected to the fitting head (10) next to the feed line (18) with a first or front line end (20). In a variant that is not shown, the supply line (18) and the discharge line (19) can be arranged one inside the other and can also be connected or connected next to one another on the fitting head (10).

The remotely controllable line closure (33) is arranged on the discharge line (19), preferably at a distance from the line end (20). The line closure (33) is in the direction of flow of the flushing waste water (8) from the fitting head

(10) distant. It can be inside or outside of the fitting body (19). In the embodiment shown, the remotely controllable line closure (33) is installed near or directly at the drain (5).

The line lock (33) is signal-connected to the flushing control (16). The discharge line (19) can be laid or laid in the fitting body (19) and leads to the line closure (33). After the line closure (33), the discharge line (19) can be or is connected to the drain (5) with another line end (21), preferably upstream of the siphon (44) in the direction of flow.

The remotely controllable line closure (33) has a remotely controllable valve (35) which remotely opens and closes or blocks the discharge line (19). The valve (35) is designed, for example, as a solenoid valve. It is connected to the flushing control (16) in terms of signals and is controlled by it. The remote-controllable line closure (33) can have a germ barrier (36) which is designed to prevent retrograde contamination of the upstream area of the discharge line (19) and the water outlet fitting (3), in particular the feed line (18) and possibly also the further upstream Avoid components such as fluid control (45) and water supply (2). The germ barrier (36) can be formed by the components explained below. Alternatively, it can be arranged independently and designed in a different way.

Figure 3 illustrates schematically the structure of the remote controllable line closure (33). In addition to the valve (35), this has a check valve (37) which is connected downstream of the valve (35) in the direction of flow. Furthermore, the remotely controllable line closure (33) can have an aerator (38). This can emit a stream (39) of flushing waste water (8) that is streamlined and optionally adjustable in terms of the flow rate. The jet regulator (38) can be connected downstream of the non-return valve (37) in said direction of flow. The jet regulator (38) and/or the non-return valve (37) can be made of a germicidal material.

The remotely controllable line closure (33) can have a beam stop (41) with a funnel. The jet catcher (41) can be downstream of the jet regulator (38) in said direction of flow and can catch the emitted jet (39) in the funnel. The other end (21) of the discharge line (18) is connected to the beam stop (41).

The beam stop (41) is at a free distance (40) from the other upstream components of the remotely controllable line closure (33). downstream. This avoids physical contact and creates a free space through which, for example, the beam (39) is emitted onto the beam stop (41) and caught in its funnel. The jet catcher (41) can also have a detector (42) which is designed and arranged to detect any backlog of rinsing waste water (8).

The non-return valve (37), the jet regulator (38) and the jet catcher (41) as well as the free space (40) can be components of the germ barrier (36). Alternatively, they may be standalone.

The remotely controllable line closure (33) can have a housing (34) in which the aforementioned components valve (35), check valve (37), jet regulator (38), free space (40) and jet catcher (41) are arranged together. In the area of the jet catcher (41) and the free space (40), an inner collecting space is formed in the housing (34), in which the rinsing waste water (8) can collect. The funnel of the jet stop (41) is arranged centrally and at a radial distance from the inner housing wall. The detector (42) can be located outside the funnel and the adjoining line area at the beam stop (41) and can be arranged near the bottom of the housing (34). The detector (42) is designed, for example, as an electric switch, the spaced poles of which are short-circuited by the overflow water in the event of a backwater and generate a voltage signal from the detector (42). This can be reported to the flushing control (16), which is connected via a signal line (47).

Figure 4 to 7 illustrate two variants of the valve assembly (23). The valve assembly can be switched by water pressure and is located in the Valve chamber (22) in the fitting head (10). The valve chamber

(22) has a connection opening (30) for the supply line, a connection opening (31) for the discharge line and a connection opening (32) for the dispensing outlet (11). With the switchable valve arrangement

(23), the supply water (7) arriving via the supply line (18) is routed to the tap outlet (11) or diverted to the discharge line (19). At the tap outlet (11), the supply water (7) exits at an outlet opening (12) there with a jet (39). A jet regulator (29) can be located on the tap outlet (11) or on the valve arrangement (23), which can be adjusted if necessary and evens out the incoming water flow and, if necessary, adjusts the flow rate.

Figure 4 and 5 show a variant with a design of the valve assembly (23) as an outlet valve (25). The supply line (18) and the discharge line (19) and their connection openings (30, 31) are arranged in the direction of flow in front of the dispensing outlet (11) and its connection opening (32). The discharge line (19) is arranged, for example, between the tap outlet (11) and the supply line (18). This arrangement can also be reversed. The outlet valve (25) has a valve disk (48) which is arranged at the outlet opening (32) of the dispensing outlet (11) and which is acted upon by a restoring element (24), e.g. a spring. The reset element

(24) moves the valve disc (48) to the connection opening (32) in the closed position.

FIG. 4 shows the tap position in which the inlet water (7) flows out of the tap outlet (11). In the dispensing position, the remotely controllable line closure (31) is closed, which is symbolized by a cross in the drawing. In this position, the discharge line (19) is filled with flushing waste water (8) up to the upper end of the line (20) and the connection opening (31). The flow pressure of the incoming inlet water (7) acts fully on the valve disc (48) and presses it against the return element (24), whereby the connection opening (32) is opened and the inlet water (7) can flow through.

FIG. 5 shows the flushing position, in which the remotely controllable line closure (33) is open. Due to the open discharge line (19), only part of the water or flow pressure of the inlet water (7) acts on the valve disk (48). The restoring element (24) is designed in such a way that this reduced effective flow pressure is not sufficient to open the outlet valve (25). In the rinsing position, the inlet water (7) is therefore deflected into the outlet line (19) and the first line end (20).

Figure 6 and 7 show a variant with a design of the valve assembly (23) as a directional valve, in particular a multi-way valve. This is a 2/3-way valve, for example, which switches between a dispensing position and a flushing position and the connection openings (30,31,32) by water pressure.

In the embodiment shown in FIGS. 6 and 7, the valve arrangement (23) and the directional control valve (26) are designed as a float valve (27). The supply line (18) and the return line (19) and their connection openings (30, 31) are also arranged here in the direction of flow in front of the connection opening (32) of the dispensing outlet (11). The lines (18,19) are aligned in parallel and connected to the valve chamber (22). In this valve design, the supply line (18) is arranged closer to the dispensing outlet (11) than the discharge line (19). The float valve (27) has a float (49) which is movably arranged in the valve chamber (22) and can be adjusted by water pressure. This has valve plates (50,51) which are arranged at a distance from one another on a common plate carrier. One valve disk (50) is assigned to the connection opening (31) for the discharge line (19). The other valve disk (51) is assigned to the connection opening (32) of the dispensing outlet (11). The valve disk (50) and the connection opening (31) for the discharge line (19) have a larger pressure-effective area than the valve disk (51) and the connection opening (32) for the dispensing outlet (11).

The connection openings (31, 32) are arranged axially opposite one another. The valve disks (50, 51) can move axially through their associated connection opening (31, 32) and are provided with seals on the circumference. The distance between the valve disks (50,51) on the float (49) is greater than the distance between the connection openings (31,32).

In the dispensing position shown in FIG. 6, the remotely controllable line closure (33) is closed, which is symbolized by a cross. As a result, there is a dynamic pressure or incompressible flushing waste water (8) in the discharge line (19) or at the end of the line (20) and on the outside of the valve disk (50). As a result, the valve disk (50) cannot move in the opening direction despite its larger disk surface. The water pressure of the inlet water (7) acts on the smaller valve disk (51) and moves it out of the connection opening (32) for the outflow of the inlet water (7) at the outlet opening (12).

FIG. 7 shows the rinsing position with the remotely controllable line closure (33) open. By opening the discharge line (19) there is no back pressure or Dynamic pressure, as a result of which the flow pressure of the incoming supply water (7) develops a greater actuating force on the larger plate surface of the valve plate (50), which moves the valve plate (50) and the float (49) out of the connection opening (31) in the opening direction. The other, smaller valve plate (51) closes the connection opening (32) of the dispensing outlet (11). The inlet water (7) is deflected into the discharge line (19).

If, in the valve variants shown, the discharge line (19) is closed and blocked again by the remote-controllable line closure (32), the valve arrangement (23) in the variants shown again assumes the dispensing position of FIG. 4 or FIG.

In another embodiment shown in FIGS. 8 and 9, the directional control valve (26) can be designed as a pressure switching valve (28) according to DE 202011 001 837 U1. In the valve chamber (22) it has a valve member (52) which is loaded by the restoring element (24) and which alternately actuates the outlet openings (31, 32) of the discharge line (19) and the tap outlet (11). The valve member (52) is designed like a housing and has its own outlet opening (52"). The movable valve member (52) interacts with a stationary, e.g. internal, support element (52') which supports the spring (24) and the outlet opening (52") can close. In the dispensing position of Figure 8, the valve member (52) opens its own outlet opening (52") and the outlet opening (32) of the dispensing outlet (11). At the same time it closes the outlet opening (31) of the discharge line (19). The line closure (33) prevents retrograde contamination of the line end (20) and the fitting head (10) in the closed position. In the rinsing position of Figure 9, the situation is reversed, with the valve member (52) closing its own outlet opening (52") and the outlet opening (32) of the tap outlet (11) and opening the connection opening (31) of the discharge line (19). Switching depends on the feed pressure of the feed water (7) in the feed line and the coordination with the counteracting force of the restoring element (24).

In the exemplary embodiments shown, the inlet water (7) consists of fresh water from the water supply (2). In another embodiment, the feed water (7) can be conditioned. For example, it can be designed as a disinfectant solution with a germicidal effect for flushing the lines (18, 19). According to FIG. 1, a disinfection device (43) is arranged for this purpose, e.g. The disinfection device (43) could, for example, contain a water-soluble disinfectant, which is dosed and added to the inlet water (7) flowing through.

The flushing control (16) is connected to the remotely controllable line closure (33) via a signal line (47). Status signals and control signals can be exchanged via the signal line (47). The signal line (47) can be connected to the remotely controllable valve (35) and the detector (42). The flush control (16) can also be connected to the disinfection device (43) that may be present via a signal line (47). A signaling connection can also exist with the fluid control (45) and with one or more of its components. The fluid controller (16) can have a communication device (46) for communication include outside, for example with a higher-level control of the water outlet system (1). The flushing control (16) is preferably designed as an electrical or electronic control. It can have a microprocessor or another computing unit and memory for programs and/or data and I/O interfaces.

The flushing control (16) can be designed as hardware and/or software. It can form an independent control module. Alternatively, it can be assigned to an existing valve control (17) or implemented in it, e.g. as a hardware or software module.

The flush control (16) can also control the inlet water (7). To do this, it can activate the aforementioned valve technology, e.g. a check valve in the supply line (18).

The rinsing control (16) can independently start and end rinsing processes. It can also determine the time of a flushing process. For this purpose, it can have a timer or receive a start signal via the communication device (46). The flushing control (16) can work with a sequence program in which a hygiene plan with a time and usage evaluation is stored. The rinsing device (6) can also contain a detection device that determines the times when the outlet fitting (3) is actuated, for example by frequency and duration, and from this determines the need for a rinsing process. If the water outlet fitting (3) is operated frequently, there is less need for separate rinsing processes than if the water outlet fitting (3) is not used for a longer period of time. The rinsing device (6) and the rinsing control (16) can also be set up to carry out rinsing processes at regular intervals or at predetermined times. The rinsing device (6) can carry out a rinsing process independently, with the actuating device (13) of the water outlet fitting (3) being in the closed position. Such a rinsing process can be carried out at times when there is little use, for example at night. It is favorable for this if the flushing device (6) or the flushing control (16) can actuate at least one check valve in the supply line (18) and open it for the flow of the supply water (7). A water outlet fitting (3) that can be remotely controlled anyway according to an embodiment of FIG. 2 is particularly favorable for this.

Modifications to the embodiments shown and described are possible in various ways. In particular, the features of the various exemplary embodiments and the modifications mentioned can be combined with one another and possibly also interchanged within the scope of the claims.

The water supply (2) can be designed for the provision and tapping of drinking water or other beverages and can have a corresponding design with a tank, pump system and the like. Drinks containing water are also subsumed under the mentioned water.

In a modification, the remotely controllable line closure (33) can be arranged in or on the fitting head (10) and close to the valve chamber (22). The line closure (33) can be remotely controlled independently by the flushing control (16). It is separate from the valve assembly (23) controlled by water pressure. REFERENCE LIST OF SYMBOLS Water outlet system Water supply Water outlet fitting Collection device, basin drain Flushing device Inlet water Rinsing waste water Fitting body Fitting head Tap outlet Outlet opening Actuating device Operating means Sensors Flushing control Fitting control Supply line Discharge line Rinsing waste water Line end to tap outlet Line end to drain Valve chamber Valve arrangement Restoring element, spring Outlet valve Directional control valve Float valve Pressure switch valve Jet regulator Connection opening supply line Connection opening discharge line Connection opening tap outlet line closure housing valve, magnetic valve Germ barrier Non-return valve Aerator Jet Free distance, free space Jet catcher Detector Disinfection device Siphon, odor trap Fluid control Communication device Signal line Valve disc Float Valve disc Valve disc Valve member ' Supporting element ' Outlet opening Display

Claims

PATENT CLAIMS Flushing device for a water outlet system (1) with a water outlet fitting (3), which has a fitting body (9), with a feed line (18) arranged therein for feed water (7) and with a fitting head (10) arranged at the end on the fitting body (9) and a tap outlet (11) there for supply water (7), the flushing device (6) having a discharge line (19) for flushing waste water (8), which is connected to one line end (20) to the fitting head (10), preferably next to the supply line ( 18) can be connected or is connected, characterized in that the flushing device (6) has a remotely controllable line closure (33) on the discharge line (19) and a flushing control (16), the remotely controllable line closure (33) being connected to the flushing control (16). is. Flushing device according to Claim 1, characterized in that the remotely controllable line closure (33) is arranged on the discharge line (19) at a distance from one line end (20). Flushing device according to Claim 1 or 2, characterized in that the line closure (33) is at a distance from the fitting head (10) in the flow direction of the flushing waste water (8). Flushing device according to Claim 1, 2 or 3, characterized in that the discharge line (19) can be laid or laid in the body of the fitting (9). Flushing device according to one of the preceding

Claims, characterized in that the discharge line (19) can be connected to a drain (5) of the water outlet system (1) with another line end (21). Flushing device according to one of the preceding

Claims, characterized in that the remote-controllable line closure (33) has a remote-controllable valve (35), in particular a solenoid valve, which opens and closes the discharge line (19). Flushing device according to one of the preceding

Claims, characterized in that the remote-controllable line closure (33) has a germ barrier (36) which is designed to prevent retrograde contamination of the upstream area of the discharge line (19) and the water outlet fitting (3). Flushing device according to one of the preceding

Claims, characterized in that the remotely controllable line closure (33) has a check valve (37). Flushing device according to Claims 6 and 8, characterized in that the non-return valve (37) is connected downstream of the remotely controllable valve (35) in the direction of flow. Flushing device according to one of the preceding

Claims, characterized in that the remotely controllable line closure (33) has an aerator (38). - 30 - ll.) Flushing device according to claim 8 or 9 and 10, characterized in that the jet regulator (38) is connected downstream of the non-return valve (37) in the direction of flow.

12.) Flushing device according to claim 8 or 10, characterized in that the check valve (37) and/or the aerator (38) is/are formed from a germicidal material.

13.) Flushing device according to one of the preceding

Claims, characterized in that the remote-controllable line closure (33) has a beam stop (41) with a funnel.

14.) Flushing device according to claim 10 and 13, characterized in that the jet catcher (41) is downstream of the jet regulator (38) in the direction of flow with a free spacing (40).

15.) Flushing device according to claim 13 or 14, characterized in that the beam stop (41) has a detector (42) for detecting a possible backlog of flushing waste water (8).

16.) Flushing device according to one of claims 6 to 15, characterized in that the remote-controlled valve (35), the non-return valve (37), the jet regulator (38) and the jet catcher (41) are arranged in a common housing (34).

17.) Flushing device according to one of the preceding

Claims, characterized in that the rinsing device (6) has a disinfection device (43) which can be connected to the supply line (18) for supply water (7). or connected. Flushing device according to Claim 15 or 17, characterized in that the detector (42) and/or the disinfection device (43) is/are connected to the flushing control (16) in terms of signals. Flushing device according to one of the preceding

Claims, characterized in that the flushing device (6) has a valve arrangement (23) which can be controlled by water pressure and which can be arranged or is arranged in the fitting head (10). Flushing device according to Claim 19, characterized in that the valve arrangement (23) can be switched depending on the opening and closing of the discharge line (19) or depending on a variable water pressure in the supply line (18). Flushing device according to one of Claims 1 to 20, characterized in that the flushing control (16) can be or is connected to a remotely controllable actuating device (13) of the water outlet fitting (3). Flushing device according to one of Claims 1 to 21, characterized in that the flushing control (16) has a communication device (46). Water outlet fitting with a flushing device (6) for a water outlet system (1), the water outlet fitting (3) having a fitting body (9) with a feed line (18) for feed water (7) arranged therein and with an end on the Water outlet fitting according to Claim 27, characterized in that the valve arrangement (23) in one switching state directs the inlet water (7) to the tap outlet (11) and in the other switching state blocks the tap outlet (11) and diverts the inlet water (7) to the discharge line (19). . Water outlet fitting according to one of claims 24 to

28, characterized in that the valve arrangement (23) has a restoring element (24), in particular a spring. Water outlet fitting in particular according to one of

Claims 24 to 29, characterized in that the valve arrangement (23) has an outlet valve (25) which is arranged in the direction of flow behind the discharge line (19) and the feed line (18) and in front of the tap outlet (11). Water outlet fitting in particular according to one of

Claims 24 to 29, characterized in that the valve arrangement (23) has a directional control valve (26) which switches depending on the opening and closing of the discharge line (19) or depending on a variable water pressure in the supply line (18). Water outlet fitting, in particular according to Claim 31, characterized in that the directional control valve (26) is designed as a float valve (27) or as a pressure switch valve (28) which is loaded on the reverse side. Water outlet fitting according to one of claims 23 to

32, characterized in that the water outlet fitting (3) has a remote-controllable actuating device (13) for switching and, if necessary, conditioning the inlet water (7), the actuating device (13) being connected to a fitting control (17) for the water outlet fitting (3) and/or is signal-connected to the flushing control (16). Water outlet fitting according to one of claims 23 to

32, characterized in that the water outlet fitting (3) has an actuating device (13) with a mechanical and manually operable operating means (14), e.g. one or more operating levers, rotary knobs or the like, for controlling the water discharge of the inlet water (7). Water outlet system with a water outlet fitting

(3) and with a flushing device (6), the water outlet fitting (3) having a fitting body (9) with a supply line (18) arranged therein for supply water (7) and with a fitting head (10) arranged at the end of the fitting body (9). as well as a tap outlet (11) there for supply water (7) and wherein the flushing device (6) has a discharge line (19) for flushing waste water (8), which has a line end (20) connected to the fitting head (10) next to the supply line (18 ) is connected, characterized in that the water outlet fitting (3) is designed according to at least one of claims 23 to 34. Water outlet system according to Claim 35, characterized in that the water outlet system (1) has a collecting device (4) for tapped inlet water (7) and an outlet (5) to which the discharge line (19) is connected to the other line end (21). Water outlet system according to Claim 35 or 36, characterized in that the discharge line (19) is connected to the drain (5) in front of a siphon (44). Method for rinsing a water outlet fitting (3), which has a fitting body (9), with a supply line (18) for supply water (7) arranged therein and with a fitting head (10) arranged at the end of the fitting body (9) and with a tap outlet (11) there for inlet water (7), the rinsing being carried out with a rinsing device (6) which comprises a discharge line (19) for rinsing waste water (8) which is connected to the fitting head (10) with one line end (20), preferably next to the feed line (18), characterized in that the flushing device (6) has a line closure (33) on the discharge line (19) and a flushing control (16) which remotely controls the line closure (33) and thus opens the discharge line (19) and closes . Method according to Claim 38, characterized in that the inlet water (7) flows out of the tap outlet (11) when the line closure (33) is closed and, when the line closure (33) is open, as flushing waste water (8) through the discharge line (19) to a drain (5 ) is discharged. Method according to Claim 39, characterized in that the flushing waste water (8) is discharged through the fitting body (9) and the discharge line (19) laid there. Method according to Claim 38, 39 or 40, characterized in that a valve arrangement (23) which can be controlled by water pressure and is connected to connection openings (30, 31, 32) of the tap outlet is arranged on the water outlet fitting (3), in particular on the fitting head (10). (11), the supply line (18) and the discharge line (19), the valve arrangement (23) switching depending on the opening and closing of the discharge line (19) or depending on a variable water pressure in the supply line (18) and in one switching state, the inlet water (7) is directed to the tap outlet (11) and in the other switching state the tap outlet (11) is blocked and the inlet water (7) is diverted to the discharge line (19). Method according to one of Claims 38 to 41, characterized in that retrograde contamination of the upstream area of the discharge line (19) and the water outlet fitting (3) is avoided by a germ barrier (36) of the remote-controllable line closure (33). Method according to one of Claims 38 to 42, characterized in that a possible backup of flushing waste water (8) is detected at the remotely controllable line closure (33). The method according to any one of claims 38 to 43, characterized in that the inlet water (7) from fresh water from a Water supply (2) is formed or the inlet water (7) is conditioned and formed by a disinfectant solution with a germicidal effect for rinsing the lines (18,19). Method according to one of Claims 38 to 44, characterized in that the flushing control (16) is operated directly with a remote-controllable actuating device (13) of the water outlet fitting (3) or manually. Method according to one of Claims 38 to 45, characterized in that the flushing is carried out automatically in response to an external or an internal trigger signal, in particular by a trigger signal from a timer, a manual remote control or a higher-level control, eg building control.