EP2479138A2 - Device for tapping a liquid - Google Patents

Abstract

In the case of a device for tapping a liquid, in particular drinking water, with at least one liquid inlet (1), at least one tap outlet (2) assigned to the liquid inlet (1) and at least one liquid outlet (3) assigned to the tap outlet (2), the liquid inlet ( 1), the tap outlet (2) and the liquid drain (3) are connected to one another via at least one directional control valve (38). The directional valve (38) has at least one pressure switch (43) which is arranged on the liquid inlet (1). In the rinsing position shown, the directional valve (38) releases the liquid drain (3), so that a liquid mixed with disinfectant is led from the liquid inlet (1) into the liquid drain (3). The tap outlet (2) is closed.

Description

The invention relates to a device for tapping a liquid, in particular drinking water with at least one liquid inlet, at least one Zapfauslass associated with the liquid inlet and at least one Zapfauslass the associated liquid drain, wherein the liquid inlet, the Zapfauslass and the liquid drain are connected to each other via at least one way.

In known devices, the liquid feed is connected to a liquid source, for example to a liquid supply network or to a liquid storage. The liquid drain, however, is connected to a sewage network or to a sewage collection tank. In order to convey the liquid from the liquid inlet to the dispensing outlet, the liquid source is regularly assigned to a pumping station. In a scavenging position, the directional control valve preferably serves to introduce liquid, which is added in particular with a disinfectant, from the liquid feed via the dispensing outlet directly into the liquid outflow. In a dispensing position, the directional control valve preferably serves to direct a ready-to-use liquid, in particular drinking water, from the liquid inlet directly through the dispensing outlet into the atmosphere. A generic device is known from the German patent application DE 10 2004 023 968 A1 known. However, the table water system described in this document is not suitable for use on commercially available sanitary facilities, such as washing and sinks, bathtubs or shower cabins, as the accommodation of this table water system requires a space that is not available or only with considerable effort in commercial sanitary facilities.

The invention is therefore based on the object to show a device of the type mentioned, which is particularly suitable for use on commercial sanitary facilities.

This object is achieved with a device with the features of the protection claim 1. Advantageous developments of the invention are specified in the subclaims.

The device according to the invention is characterized in that the directional control valve has at least one pressure switch, which is arranged at the liquid inlet. In this way, the liquid to be tapped acts as a working means for driving the directional control valve. On a control of the directional control valve by means of separate control lines can be advantageously dispensed with. In the context of this invention, the pressure switch is suitable for switching the directional valve as a function of the fluid pressure present at the fluid inlet. In order to prevent lying in an intermediate region pressures lead to flutter of the directional control valve, the upper switching point and the switch-back point of the directional control valve are spaced from each other.

According to a first development of the invention, the dispensing outlet has at least one jet nozzle. If the dispensing outlet has a multiplicity of jet nozzles, these together form a jet regulator, which serves to mix the liquid emerging from the dispensing outlet with the ambient air to form a voluminous, soft and non-squirting mixed jet. However, it is also conceivable that the dispensing outlet forms a designated as aerator or mixing nozzle jet regulator.

According to a next development of the invention, the control member of the directional control valve has a transverse to the flow cross section of the dispensing outlet extending travel on. If the travel of the control member extends transversely to the flow cross-section of the dispensing outlet, comparatively large flow cross-sections can be switched by means of the smallest adjustment paths. Thus, the device according to the invention has a particularly compact design, which allows their easy admission to commercially available sanitary facilities. For this recording, the device according to the invention is either an integral part of a tap fitting or designed as a retrofit kit, with which commercially available dispensing taps are expandable in the range of their tap outlets.

According to a particularly preferred embodiment of the invention it is provided that the dispensing outlet is formed on the control member of the directional control valve, and that the housing of the directional control valve has at least one closure body cooperating with the dispensing outlet. To be able to subject the directional control valve a particularly extensive disinfection, the housing has a Zapfauslass the outside enclosing housing opening and a Zapfauslass on the inside upstream closure body, wherein the travel of the control member is bounded on the one hand by the boundary surfaces of the housing opening and on the other hand by the closure surface of the closure body.

According to a particularly expedient development of the invention, the housing has at least one housing part forming the housing opening made of a flexible material. The soft-elastic material offers the possibility of forming a housing opening which opens or closes in response to mechanical stresses acting on the material. In this way, each jet nozzle forming the dispensing outlet can be moved out of the atmosphere into a flushing position in the middle of the flow path connecting the liquid feed with the liquid outflow. In the flushing position, liquid added with a disinfectant can be introduced from the liquid feed, via the dispensing outlet, directly into the liquid drain, whereby all the line parts which have previously come into contact with a liquid to be dispensed are disinfected. Particularly preferably, it is provided that each housing opening is formed into a slot, which has non-load condition abutting jamb surfaces. In the case of a mechanical load through the jet nozzle, the soft-elastic material of the jet nozzle which delimits the slot deviates so much that it can finally penetrate the soft-elastic material while widening its slot.

Of course, each passage opening may be formed instead of a slot to another passage, which has in the load-free state abutting sealing surfaces.

According to another embodiment of the invention, the control member of the directional control valve has a parallel to the flow cross-section of the dispensing outlet extending travel. This embodiment finds its preferred application in drinking water fittings in sanitary facilities that can do without a traditional tap fitting in the sense of a conventional faucet. If the travel of the control member runs parallel to the flow cross-section of the dispensing outlet, it is preferably arranged in a housing wall which has a tread projecting on the control member. In this case, the travel has at least one length which corresponds to the diameter of the smallest formed on the control member flow cross-section.

In order to arrange the upper switching point and the switch-back point of the directional valve by means of a hysteresis spaced from each other, it is proposed that the pressure switch has at least one acting on the control member of the directional control valve bistable return spring. This advantageously prevents the formation of unstable switching states.

To prevent disinfectant from unintentionally switching the directional control valve can leave the dispensing outlet into the atmosphere, the pressure switch is assigned according to a next development of the invention, at least one can be arranged in the liquid inlet pressure limiter. This Pressure limiter is used to set in the liquid inlet below the switching point of the directional control valve lying fluid pressures at which disinfection operations are feasible. The pressure limiter is preferably coupled via a separate safety circuit to the execution of a disinfection finishing flushing process.

For disinfecting the device according to the invention, the liquid feed can be connected according to another embodiment of the invention via at least one shut-off valve to a disinfectant feed. It is irrelevant to the invention whether the liquid inlet and the disinfectant inlet interconnecting line parts are part of the device according to the invention or not. The mentioned in the context of this invention disinfectant feed expressly represents a preferred development with which the device according to the invention, however, can only develop their benefits.

Fig. 1a:

eine perspektivische Schnittdarstellung eines ersten Ausführungsbeispiels einer erfindungsgemäßen Vorrichtung mit in Spülstellung befindlichem Steuerglied;

Fig. 1b:

eine perspektivische Schnittdarstellung gemäß Fig. 1a mit in Zapfstellung befindlichem Steuerglied;

Fig. 2a:

eine perspektivische Schnittdarstellung eines zweiten Ausführungsbeispiels der Vorrichtung mit in Spülstellung befindlichem Steuerglied;

Fig. 2b:

eine perspektivische Schnittdarstellung gemäß Fig. 2a mit in Zapfstellung befindlichem Steuerglied;

Fig. 3a:

eine perspektivische Schnittdarstellung eines dritten Ausführungsbeispiels der Vorrichtung mit in Spülstellung befindlichem Steuerglied;

Fig. 3b:

eine perspektivische Schnittdarstellung gemäß Fig. 3a mit in Zapfstellung befindlichem Steuerglied;

Fig. 4a:

eine perspektivische Schnittdarstellung eines vierten Ausführungsbeispiels der Vorrichtung mit in Zapfstellung befindlichem Steuerglied, und

Fig. 4b:

eine perspektivische Schnittdarstellung gemäß Fig. 4a mit in Spülstellung befindlichem Steuerglied;

Fig. 5a:

eine perspektivische Schnittdarstellung eines fünften Ausführungsbeispiels der Vorrichtung mit in Spülstellung befindlichem Steuerglied;

Fig. 5b:

eine perspektivische Schnittdarstellung gemäß Fig. 5a mit in Zapfstellung befindlichem Steuerglied.

Embodiments from which further inventive features result are shown in the drawings. Show it:

Fig. 1a:

a perspective sectional view of a first embodiment of a device according to the invention with located in Spülstellung control member;

Fig. 1b:

a perspective sectional view according to Fig. 1a with in-tapping control;

Fig. 2a:

a sectional perspective view of a second embodiment of the device with located in Spülstellung control member;

Fig. 2b:

a perspective sectional view according to Fig. 2a with in-tapping control;

Fig. 3a:

a sectional perspective view of a third embodiment of the device with located in Spülstellung control member;

3b:

a perspective sectional view according to Fig. 3a with in-tapping control;

Fig. 4a:

a perspective sectional view of a fourth embodiment of the device with located in tapping control member, and

Fig. 4b:

a perspective sectional view according to Fig. 4a with located in flushing control member;

Fig. 5a:

a sectional perspective view of a fifth embodiment of the device with located in Spülstellung control member;

Fig. 5b:

a perspective sectional view according to Fig. 5a with in-tapping control member.

The Fig. 1a shows a perspective sectional view of a first embodiment of a device according to the invention for tapping a liquid. For this purpose, the device has a liquid inlet 1, a Zapfauslass 2 associated with the liquid inlet 1, a liquid outlet 3 associated with the Zapfauslass 2 and a directional control valve 4, via which the liquid inlet 1, the Zapfauslass 2 and the liquid outlet 3 are interconnected. The directional control valve 4 has a pressure switch 5, which is arranged on the liquid inlet 1. The dispensing outlet 2 is composed of a plurality of individual jet nozzles 6, which are formed on the control member 7 of the directional control valve 4. The control member 7 has a transverse to the flow cross section of the dispensing outlet 2 extending travel, wherein the housing 8 of the directional control valve 4, the travel of the control member 7 forming treads 9 has. The housing 8 of the directional control valve 4 has on the one hand, a housing opening 10 which surrounds the jet nozzles 6 on the outside without contact and, on the other hand, the jet nozzles 6 on the inside upstream of the closure body 11. The pressure switch 5 has a arranged between the housing 8 and the control member 7 of the directional control valve 4 return spring 12, which counteracts a voltage applied to the liquid inlet 1 fluid pressure. In addition, the control member 7 has a cooperating with the liquid drain 3 through-flow opening 13, and the housing 8 has a cooperating with the flow-through opening 13 sealing surface 14. The travel of the control member 7 is limited on the one hand by the housing opening 10 and on the other hand by the sealing surfaces 15 of the closure body 11. In the illustrated flushing position, the control member 7 releases the liquid drain 3, so that a liquid mixed with a disinfectant can be introduced from the liquid inlet 1 via the pressure switch 5 into the liquid drain 3. The dispensing outlet 2 of the control member 7 is in this case closed by the closure bodies 11 of the housing 8.

The Fig. 1b shows a perspective sectional view of the device according to the Fig. 1a , This sectional view shows the control member 7 in its dispensing position, in which a ready-liquid from the liquid feed 1 via the pressure switch 5 and the jet nozzles 6 can be conducted into the atmosphere. The flow opening 13 of the control member 7 is in this case closed by the sealing surface 14 of the housing 8. The same components are provided with the same reference numbers.

The Fig. 2a shows a perspective sectional view of the device in a second embodiment, in which the dispensing outlet 2 is composed of a plurality of individual jet nozzles 16, the jet nozzles 16 are arranged on a control member 17 of the directional control valve 4 and the housing 8 of the directional control valve 4 a plurality with the jet nozzles 16th cooperating housing openings 18 are formed. For this purpose, the housing 8 has a housing part 19 carrying the housing openings 19 made of a soft elastic material. In the purge position shown is that of the jet nozzles 16 formed Zapfauslass 2 in the middle of the liquid inlet 1 with the liquid drain 3 connecting flow path in the interior of the housing 8. The housing openings 18 are formed into slots whose soffit surfaces abut each other in the illustrated load-free state. In the flushing position, liquid mixed with a disinfectant can thus be introduced directly into the liquid outflow 3 from the liquid feed via the pressure switch 5 and the jet nozzles 16 forming the dispensing outlet 2. Equivalent components are provided with the same reference numbers.

The Fig. 2b shows a perspective sectional view of the device according to the Fig. 2a with located in tapping control member 17. The trained on the control member 17 jet nozzles 16 are extended like a pin, so that the housing part 19 is penetrated in the illustrated Zapfstellung under elastic widening of its housing openings 18 of the pin-like jet nozzles 16. In this way, a ready-liquid from the liquid feed 1 via the pressure switch 5 and the pin-like jet nozzles 16 are discharged into the atmosphere. Equivalent components are provided with the same reference numbers.

The Fig. 3a shows a perspective sectional view of the device in a third embodiment in which the housing 8 of the directional control valve 4, a plurality of the jet nozzles 16 cooperating housing openings 20 are formed. For this purpose, the housing 8 has a housing part 21 carrying the housing openings 20 made of a likewise soft-elastic material. In the rinsing position shown, the dispensing outlet 2 formed by the jet nozzles 16 is located in the interior of the housing 8 in the middle of the flow path connecting the liquid inlet 1 to the liquid outlet 3. The housing openings 20 are formed into passages which have sealing surfaces abutting each other in a no-load condition. In the flushing can thus also with a disinfectant added liquid from the liquid inlet 1 via the pressure switch 5 and the dispensing nozzle 2 forming jet nozzles 16 directly into the Liquid discharge 3 are initiated. Equivalent components are provided with the same reference numbers.

The Fig. 3b shows a perspective sectional view of the device according to the Fig. 3a with Zapfstellung located in the control member 17. In the dispensing position, the housing part 21 is also penetrated by elastic expansion of its housing openings 20 of the jet nozzles 16 of the control member 17. In this way, a ready-to-use liquid from the liquid feed 1 via the pressure switch 5 and the pin-like jet nozzles 16 can be conducted into the atmosphere here as well. Equivalent components are also provided here with the same reference numbers.

The Fig. 4a shows a perspective sectional view of a fourth embodiment of the device for tapping a liquid. For this purpose, the device has a liquid inlet 22, a Zapfauslass 23 associated with the liquid inlet 22, a liquid outlet 24 associated with the Zapfauslass 23 and a directional control valve 25, via which the liquid inlet 22, the Zapfauslass 23 and the liquid drain 24 are connected. The directional control valve 25 has a pressure switch 26 which is arranged on the liquid inlet 22. The control member 27 of the directional control valve 25 has a parallel to the flow cross section of the Zapfauslasses 23 extending travel, wherein the housing 28 of the directional control valve 25 has the travel of the control member 27 forming treads 29. The dispensing outlet 23 is formed on the control member 27 of the directional control valve 25. The housing 28 of the directional valve has a Zapfauslass 23 contactless surrounding housing opening 30. The pressure switch 26 has a arranged between the housing 28 and the control member 27 of the directional control valve 25 return spring 31, which counteracts a voltage applied to the liquid inlet 22 fluid pressure. In addition, the control member 27 has a cooperating with the liquid drain 24 sealing surface 32. The housing 28, however, has a cooperating with the dispensing outlet 23 sealing surface 33. The travel of the control member 27 is limited by the housing 28 formed on the stop surfaces 34, 35. In the illustrated dispensing position, the sealing surface 33 of the control member 27 releases the dispensing outlet 23, so that a ready-to-use liquid can be conducted from the liquid feed 22 via the pressure switch 26 through the dispensing outlet 23 into the atmosphere. The liquid drain 24 is in this case closed by the sealing surface 32 of the control member 27.

The Fig. 4b shows a perspective sectional view of the device according to the Fig. 4a , This sectional view shows the control member 27 in its flushing position, in which the sealing surface 32 of the control member 27 releases the liquid drain 24, so that a liquid mixed with a disinfectant from the liquid inlet 22 via the pressure switch 26 can be introduced directly into the liquid drain 24. The dispensing outlet 23 is in this case closed by the sealing surface 33 of the control member 27. The same components are provided with the same reference numbers.

The Fig. 5a shows a perspective sectional view of the device in a fifth embodiment, in which the dispensing outlet 2 has a single jet nozzle 36 which is formed on the control member 37 of a directional control valve 38. The control member 37 here also has a transverse to the flow cross section of the dispensing outlet 2 extending travel, wherein the housing 39 of the directional control valve 38 has the travel of the control member 37 forming treads 40. The housing 39 of the directional control valve 38 has, on the one hand, a housing opening 41 surrounding the jet nozzle 36 and, on the other hand, a closure body 42 disposed on the inside of the jet nozzle 36. The directional control valve 38 has a pressure switch 43, which is likewise arranged on the liquid inlet 1. In addition, the housing 39 an inner housing part 44, wherein the pressure switch 43 has a disposed between the inner housing part 44 and the control member 37 return spring 45 which counteracts a voltage applied to the liquid inlet 1 fluid pressure. The housing part 44 carries a jet regulator 46 arranged between the dispensing outlet 2 and the liquid inlet 1. The inner housing part 44 and the closure body 42 are connected to one another via a perforated rim 47. The control member 37 has a with the Liquid outlet 3 cooperating flow opening 48, and the housing 39 has a cooperating with the flow-through opening 48 sealing surface 49. In the rinsing position shown, a fluid supplied with a disinfectant can be introduced from the liquid inlet 1 via the pressure switch 43, the jet regulator 46 and the perforated rim 47 into the liquid outlet 3. The jet nozzle 36 of the Zapfauslasses 2 is in this case closed by the closure body 42 of the housing 39.

The Fig. 5b shows a perspective sectional view of the device according to the Fig. 5a , This sectional view shows the control member in its dispensing position, in which the control member 37 releases the dispensing outlet 2, so that a ready liquid from the liquid feed 1 via the pressure switch 43, the jet regulator 46, the hole rim 47 and the jet nozzle 36 can be discharged into the atmosphere , The flow opening 48 of the control member 37 is in this case closed by the sealing surface 49 of the housing 39. The same components are provided with the same reference numbers.

Claims (11)

Device for tapping a liquid, in particular drinking water, with at least one liquid inlet, at least one dispensing outlet associated with the liquid inlet and at least one liquid outlet associated with the dispensing outlet, the liquid inlet, the dispensing outlet and the liquid outlet being connected to one another via at least one directional control valve,
characterized,
in that the directional control valve (4, 25, 38) has at least one pressure switch (5, 26, 43) which is arranged on the liquid inlet (1, 22). Apparatus according to claim 1, characterized in that the dispensing outlet (2, 23) has at least one jet nozzle (6, 16, 36). Apparatus according to claim 1 or 2, characterized in that the control member (7, 17, 37) of the directional control valve (4, 25, 38) has a transverse to the flow cross section of the dispensing outlet (2, 23) extending travel. Device according to one of claims 1 to 3, characterized in that the dispensing outlet (2, 23) on the control member (7, 17, 37) of the directional control valve (4, 25, 38) is formed, and that the housing (8, 28, 39) of the directional control valve (4, 25, 38) at least one with the dispensing outlet (2, 23) cooperating closure body (11, 42). Apparatus according to claim 4, characterized in that the housing (8, 28) at least one housing opening (18, 20) forming the housing part (19, 21) made of a soft elastic material. Apparatus according to claim 5, characterized in that each housing opening (18) is formed into a slot which has non-load condition abutting jamb surfaces. Apparatus according to claim 5 or 6, characterized in that each housing opening (20) is formed into a passage which has in non-load condition abutting sealing surfaces. Apparatus according to claim 1 or 2, characterized in that the control member (27) of the directional control valve (25) has a parallel to the flow cross section of the dispensing outlet (23) extending travel. Device according to one of claims 1 to 8, characterized in that the pressure switch (5, 26, 43) at least one on the control member (7, 17, 27, 37) of the directional control valve (4, 25, 38) acting bistable return spring (12, 31, 45). Device according to one of claims 1 to 9, characterized in that the pressure switch (5, 26, 43) is assigned at least one in the liquid inlet (1, 22) can be arranged pressure limiter. Device according to one of claims 1 to 10, characterized in that the liquid inlet (1, 22) is connected via at least one shut-off valve to a disinfectant feed.

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