EP4293167A1 - Tube disconnecter - Google Patents

Abstract

A pipe interrupter (1) comprises a first pipe section (2) with a first connecting piece (3), a second pipe section (4) with a second connecting piece (5), a free pipe section adjoining the first pipe section (2) and the second pipe section (4). Flow section (6), and a drain section (7) adjoining the free flow section (6), the first pipe section (2) having at least one first outlet opening (8) and the second pipe section (4) having at least one second outlet opening (9). , and wherein the at least one first outlet opening (8) extends around the at least one second outlet opening (9), such that a water curtain (W) can be provided by water emerging from the at least one first outlet opening (8) and that from the Water emerging from at least one second outlet opening (9) flows within the water curtain (W).

Description

TECHNICAL FIELD

The present invention relates to a pipe interrupter according to the preamble of claim 1, an arrangement with the pipe interrupter according to claim 14 and a use of the pipe interrupter according to claim 16.

STATE OF THE ART

Pipe separators or pipe interrupters have become known from the prior art. Pipe separators or pipe interrupters are used as a separating element between a fresh water part and a waste water part in a sanitary fitting or a pipe network, so that in the event of a pressure surge in the waste water part, no water can flow back into the fresh water part. Typically, a pipe separator or pipe interrupter includes a free outlet in which the water is guided as a free jet, i.e. without any lateral limitation. Backflowing wastewater could flow out here.

If hot water, for example during a hygiene flush, flows through the pipe separator or the pipe interrupter, water vapor is created, which emerges from the pipe separator or the pipe interrupter. This release of steam is disadvantageous. On the one hand, the steam can contribute to corrosion, mold formation, etc. in poorly ventilated areas. On the other hand, the steam can lead to condensation, which can then lead to an undesirable water leak.

The disadvantages mentioned occur, for example, when the pipe separator or the pipe interrupter is arranged in a partially closed area or a partially closed box. Such as in connection with one Hygiene box flushing.

PRESENTATION OF THE INVENTION

Based on this prior art, the present invention is based on the object of providing a pipe interrupter which overcomes the disadvantages of the prior art. In particular, it is an object of the present invention to provide a pipe interrupter which prevents steam from escaping when hot water flows through.

The pipe interrupter solves these and other tasks according to claim 1. Accordingly, a pipe interrupter comprises a first pipe section with a first connecting piece, a second pipe section with a second connecting piece, a free flow section adjoining the first pipe section and the second pipe section, and one of the free flow sections subsequent drain section. The first pipe section has at least a first outlet opening and the second pipe section has at least a second outlet opening. The outlet openings mentioned are oriented towards the free flow path. The at least one first outlet opening extends around the at least one second outlet opening, such that a water curtain can be provided by water emerging from the at least one first outlet opening and that the water emerging from the at least one second outlet opening flows within the water curtain.

The water curtain from the first pipe section or the first outlet opening prevents water vapor and/or water splashes from expanding freely from the second pipe section in the area of the free flow path. The water curtain therefore forms a lateral boundary for water from the second pipe section.

A free flow path is understood to mean a free outlet in the sense of the DN EN 1717 standard. This is a separation area between the first and second pipe sections and the drain section. The free flow path is designed in such a way that water cannot flow from the drain section into the first or second pipe section. In particular, the free flow path is designed to be open at the side, so that water flowing back can exit laterally.

The pipe sockets mentioned preferably have an external thread or a Internal thread or another connection contour for connection to a water pipe.

Preferably, the cross section of the second pipe section decreases in the direction of the second outlet opening. This means that as the distance to the second pipe section becomes smaller, the cross section of the second pipe section also becomes smaller. This partial area, which becomes smaller in cross-section, is preferably conical. Preferably, the partial area that becomes smaller in cross-section is followed by a cylindrical partial area, which leads to the outlet opening.

The first pipe section is preferably designed as a pipe gap, in particular as an annular gap. The pipe gap or the annular gap extends around the second pipe section. Particularly preferably, the central axis of the pipe gap or the annular gap runs collinearly to the central axis of the first pipe section.

In a preferred embodiment, the second pipe section is formed on an insert which can be inserted into a channel opening in a housing. The first pipe section is then formed by the outside of the insert and the inside of the housing.

In a first embodiment, the at least one first outlet opening extends completely around the at least one second outlet opening. This means that the first outlet opening has no interruption, so that the water curtain in question leaves the outlet opening as a completely constructed and all-round closed water curtain.

In a second embodiment, a plurality of first outlet openings are arranged next to one another and distributed around the at least one second outlet opening. In this embodiment, the water curtain does not form directly at the outlet, but rather at a short distance from at least one first outlet opening. In this regard, it is advantageous to arrange the second outlet opening at a distance from the first outlet opening in the flow direction of the water curtain.

Preferably, the at least one first outlet opening lies in a first plane and the at least one second exit surface lies in a second plane. In a first variant, the first level is at a distance from the second level. In a second variant. the first level and the second level form a common level. This means that the at least one first outlet opening lies in the same plane as the at least one second outlet surface.

The planes preferably run at right angles to the central axis of the first and second pipe sections.

Preferably, the first exit surface is annular and/or the second exit opening is circular.

Other shapes of the first outlet opening are also conceivable. For example, the first outlet opening could also be oval or rectangular or triangular or polygonal. Other shapes of the second outlet opening are also conceivable.

Preferably, exactly a single first outlet opening is arranged and/or exactly a single second outlet surface is arranged.

Preferably, the first pipe section and the second pipe section run parallel to one another at least in sections. In particular, the two pipe sections run parallel to one another immediately before reaching the respective outlet opening.

Preferably, the first pipe section runs in a straight line or conically or curved immediately in front of the at least one first outlet opening. The shape of the water curtain can be defined by the shape of the first pipe section in front of the at least one first outlet opening.

Preferably, the drain section has a third pipe section and a fourth pipe section. The first pipe section is oriented in the direction of the third pipe section, such that water from the first pipe section can be fed into the third pipe section. The second pipe section is oriented in the direction of the fourth pipe section such that water from the second pipe section can be fed into the fourth pipe section.

Preferably, the third pipe section and the fourth pipe section open into a common outflow section. The common outflow section preferably has a pipe socket or a siphon connected to the outflow section.

Preferably, the third pipe section has a section that tapers in relation to its cross section. The tapering section is arranged such that the water curtain flowing out of the at least one first outlet opening hits the tapering section. Due to the tapered design of the third pipe section, the water is diverted from the outside of the third pipe section to the inside of the third pipe section, thereby creating a closure. This ensures that the water curtain not only extends over the entire length of the free flow path, but that it is also closed at the bottom. The tapering section is preferably aligned such that it is directed in the direction of the fourth pipe section.

Preferably, the cross section of the third pipe section is larger than the cross section of the first pipe section. Preferably, the cross section of the fourth pipe section is larger than the cross section of the second pipe section.

In another embodiment, the drain section has only one pipe section, with the first pipe section and the second pipe section then opening into the one pipe section. This pipe section preferably has a section which tapers in relation to its cross section and which is designed to taper in the direction of the central axis of the pipe section. The tapering section is arranged in such a way that the water curtain flowing out of the at least one first outlet opening hits the tapering section and is deflected in the direction of the central axis of the pipe section. This tapered section has the effect already described above that the water curtain is closed at the bottom.

Preferably, the first pipe section and the second pipe section are connected to the outflow section or to the third pipe section and the fourth pipe section via webs that extend along the free flow path.

Preferably there are three or four webs. The webs are narrow so that backflowing water can escape through the gaps between the webs.

The free flow path is preferably at least 20 millimeters long.

Preferably, the pipe interrupter further has at least one ventilation channel which ends with at least one ventilation opening, the first outlet opening extending around the at least one ventilation opening. Preferably, the ventilation opening is located between the first outlet opening and the second outlet opening, such that air can be introduced between the water curtain from the at least one first outlet opening and the water jet from the at least one second outlet opening. Introducing air at this point prevents or reduces constriction of the water curtain due to flow effects between the water jet and the water curtain.

One arrangement includes a pipe breaker as described above, a cold water pipe and a hot water pipe. The first pipe section is connected to the cold water pipe and the second pipe section is connected to the hot water pipe in such a way that the water curtain can be provided with the water flowing in the cold water pipe and that the water flowing in the hot water pipe is surrounded by the water curtain.

Preferably, the hot water line and the cold water line include a valve that can be controlled by a hygiene flush control.

A use of a pipe interrupter according to the above description is characterized in that the first pipe section is connected to a cold water pipe and that the second pipe section is connected to a hot water pipe in such a way that the water curtain can be provided with the water flowing in the cold water pipe and that in the hot water pipe flowing water is surrounded by the water curtain.

Further embodiments are specified in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

eine perspektivische Ansicht eines Rohrunterbrechers nach einer bevorzugten Ausführungsform;

Fig. 2

eine weitere perspektivische Ansicht des Rohrunterbrechers nach Figur 1;

Fig. 3

eine perspektivische Schnittansicht des Rohrunterbrechers nach Figuren 1 und 2; und

Fig. 4

eine weitere Schnittansicht des Rohrunterbrechers nach Figuren 1 bis 3.

Preferred embodiments of the invention are described below with reference to the drawings, which serve only for explanation and are not to be interpreted in a restrictive manner. In the drawings show:

Fig. 1

a perspective view of a pipe breaker according to a preferred one embodiment;

Fig. 2

Another perspective view of the pipe breaker Figure 1 ;

Fig. 3

a perspective sectional view of the pipe breaker Figures 1 and 2 ; and

Fig. 4

another sectional view of the pipe breaker Figures 1 to 3 .

DESCRIPTION OF PREFERRED EMBODIMENTS

In the figures, a pipe interrupter 1 according to the invention according to a preferred embodiment is shown in various views.

The pipe interrupter 1 comprises a first pipe section 2 with a first connecting piece 3, a second pipe section 4 with a second connecting piece 5, a free flow section 6 adjoining the first pipe section 2 and the second pipe section 4 and a drain section 7 adjoining the free flow section 6.

The free flow section 6 forms a separation between the first pipe section 2 or the second pipe section 4 and the drain section 7. The water is guided laterally in the first and second pipe sections 2, 4. The drain section 7 is tubular and carries the water laterally. The water flows from the first pipe section 2 or from the second pipe section 4 via the free flow section 6 into the drain section 7. The free flow section 6 is designed to be largely open at the side, so that water that flows back from the drain section 7, for example in the case of a Pressure surge in the wastewater network, in which the free flow section 6 emerges and does not flow back to the first pipe section 2 or to the second pipe section 4 or in the event of a negative pressure in the fresh water network.

The connecting pieces 3, 5 have an external thread to which a water pipe can be connected. Other types of connection points are also conceivable.

The first pipe section 2 has at least one first outlet opening 8. In the embodiment shown, exactly a single first outlet opening 8 is arranged. The second pipe section 4 has at least one second outlet opening 9. In the embodiment shown, exactly a single second outlet opening 9 is arranged. It can be seen from the figures that the at least one first outlet opening 8 extends around the at least one second outlet opening 9. The first outlet opening 8 thus surrounds the second outlet opening 9. The first outlet opening 8 is arranged with respect to the second outlet opening 9 in such a way that a water curtain W is provided by the water which emerges from the first outlet opening 8 and that the water which comes out the second outlet opening 9 emerges as a water jet S, flows within the water curtain W. In other words, the water curtain W, which flows out of the first outlet opening 8, surrounds the water jet S, which flows out of the second outlet opening 9. The water curtain W is in the Figure 4 shown by arrows. Inside this water curtain W, i.e. between the two arrows, flows the water jet S, which is also shown with an arrow.

In the preferred use of the pipe interrupter 1, a cold water pipe is connected to the first pipe section 2 and a hot water pipe is connected to the second pipe section 4. A cold water pipe is a pipe whose water is at ambient temperature. A hot water pipe is a pipe whose water is at a higher temperature than ambient temperature. For example 50°C to 65°C. When the cold water and hot water flow out, the water curtain W is provided by the cold water flowing in the cold water pipe and the warm water flowing in the hot water pipe is surrounded by the water curtain W. Due to this covering, any water vapor that forms as the hot water flows out cannot escape from the free flow path 6.

Of the Figure 1 It can be seen that the at least one first outlet opening 8 extends completely around the at least one second outlet opening 9. The two outlet openings 8, 9 are arranged here concentrically to one another. The first outlet opening 8 has the shape of a ring or an annular gap. The second outlet opening 9 is circular. In a particularly preferred embodiment, the cross section of the first outlet opening 8 is larger than the cross section of the second outlet opening 9. Particularly preferably, the cross section of the first outlet opening 8 is larger by at least a factor of 2 or by at least a factor of 3 than the cross section of the second outlet opening 9.

In the embodiment shown, the two outlet openings 8, 9 lie in a common plane. In other embodiments, not shown, it is also conceivable that the two outlet openings 8, 9 lie in different levels, the levels being at different distances from one another.

In the embodiment shown, exactly a single first outlet opening 8 and exactly a single second outlet opening 9 are arranged.

Of the Figures 1 and 2 It can be seen that the drain section 7 has a third pipe section 10 and a fourth pipe section 11. The third pipe section 10 runs concentrically to the fourth pipe section 11. From the Figures 3 and 4 It can be seen that the first pipe section 2 is oriented in the direction of the third pipe section 10. Water that reaches the end section 7 from the first pipe section 2 in the form of the water curtain W via the free flow path 6 can thus be fed into the third pipe section 10. Furthermore, the second pipe section 9 is oriented in the direction of the fourth pipe section 11. Here the water, which reaches the end section 7 from the second pipe section 4 via the free flow path 6, can be fed into the fourth pipe section 11.

Here, the third pipe section 10 has a section 13 that tapers with respect to its cross section. The tapering section 13 is aligned here in such a way that it is directed in the direction of the fourth pipe section 11. This alignment closes the water curtain W at the bottom, so that the water jet from the second outlet opening 10 remains surrounded by the water curtain W from the second outlet opening 10 to the inlet into the fourth pipe section 11.

The fourth pipe section 11 has the advantage that the cold water remains separated from the hot water for as long as possible. Mixing therefore only takes place after the third pipe section 10 and the fourth pipe section 11 have been brought together.

In the outflow section 7, the third pipe section 10 and the fourth pipe section 11 open into a common outflow section 15. In the outflow section 15, the water, in particular the cold water, from the third pipe section 10 mixes with the water, in particular the hot water, from the fourth pipe section 11. In the embodiment shown, the common outflow section 15 also has a pipe socket 12. The pipe socket 12 is designed as a hollow cylinder in the embodiment shown.

In the embodiment shown, the first pipe section 2 and the second pipe section 4 are connected to the third pipe section 10 and to the fourth pipe section 11 via webs 14 which extend along the free flow path 6. Gap areas 16 are arranged between the webs 14, through which any river water can escape laterally from the outflow section 15. In other embodiments, it is also conceivable that the first pipe section 2 and the second pipe section 4 with the drain section 4 are attached to a housing, so that the free flow path 6 is always present.

In the embodiment shown, the first pipe section 2 extends from the side into a housing 17 and is deflected by 90° in the housing 17. The pipe section 2 is defined in the area of the deflection of the wall of a housing opening 18 and by the outside of an insert 19. The insert 19 here has the second pipe section 4, which essentially runs along a straight central axis M. The insert 19 is screwed into the housing opening 18 here. The basic technical teaching can also be achieved with other structural structures.

In the embodiment shown, the pipe interrupter 1 also has at least one ventilation channel 20. The ventilation channel 20 ends with at least one ventilation opening 21. The first outlet opening 8 extends around the at least one ventilation opening 21. The ventilation opening 21 therefore opens into the interior of the water curtain W. The ventilation channel also has at least one inlet opening 22, through which ambient air can enter the ventilation channel 2.

The pipe interrupter is preferably made of plastic or metal.

In a preferred use or arrangement, the pipe breaker 1 is connected to a cold water pipe and a hot water pipe. The first pipe section 2 is connected to the cold water pipe and the second pipe section 4 is connected to the hot water pipe in such a way that the water curtain W can be provided with the water flowing in the cold water pipe and that the water flowing in the hot water pipe is surrounded by the water curtain W.

Particularly preferably, the hot water line and the cold water line each have a valve that can be controlled by a hygiene flush control. Preferably the two will be Valves open at the same time during a hygiene flushing process, so that the water curtain W can form right at the start of the hygiene flushing process. A time-delayed opening would also be conceivable, in which case the valve in the cold water pipe would be opened first and then in the hot water pipe at a different time.

REFERENCE SYMBOL LIST

1

Pipe breaker

2

first pipe section

3

first connection piece

4

second pipe section

5

second connection piece

6

free flow path

7

drain section

8th

first exit opening

9

second exit opening

10

third pipe section

11

fourth pipe section

12

pipe socket

13

tapering section

14

web

15

Outflow section

16

gap area

17

Housing

18

Case opening

19

Mission

20

ventilation channel

21

Ventilation opening

M

Central axis

W

Water curtain

S

water jet

Claims (17)

Pipe interrupter (1) comprising a first pipe section (2) with a first connecting piece (3), a second pipe section (4) with a second connecting piece (5), a free flow section (6) adjoining the first pipe section (2) and the second pipe section (4), and a drain section (7) adjoining the free flow section (6), wherein the first pipe section (2) has at least one first outlet opening (8) and wherein the second pipe section (4) has at least one second outlet opening (9), characterized, that the at least one first outlet opening (8) extends around the at least one second outlet opening (9), such that a water curtain (W) can be provided by water emerging from the at least one first outlet opening (8) and that from the at least one Water emerging from the second outlet opening (9) flows within the water curtain (W). Pipe interrupter (1) according to claim 1, characterized in that the at least one first outlet opening (8) extends completely around the at least one second outlet opening (9); or that a plurality of first outlet openings (8) are arranged next to one another and distributed around the at least one second outlet opening (9). Pipe interrupter (1) according to one of the preceding claims, characterized in that the at least one first outlet opening (8) lies in a first plane and that the at least one second outlet surface (9) lies in a second plane, the first plane being spaced apart from the second Level is or where the first level and the second level form a common level. Pipe interrupter (1) according to one of the preceding claims, characterized in that the first outlet surface (8) is annular or oval or rectangular or triangular or polygonal and / or that the second outlet opening is circular (9). Pipe interrupter (1) according to one of the preceding claims, characterized in that exactly a single first outlet opening (8) is arranged and that exactly a single second outlet surface (9) is arranged. Pipe interrupter (1) according to one of the preceding claims, characterized in that the first pipe section (2) and the second pipe section (3) run parallel to one another at least in sections. Pipe interrupter (1) according to one of the preceding claims, characterized in that the first pipe section (2) runs straight or conical or curved immediately in front of the at least one first outlet opening (8). Pipe interrupter (1) according to one of the preceding claims, characterized in that the drain section (7) has a third pipe section (10) and a fourth pipe section (11), the first pipe section (2) being oriented in the direction of the third pipe section (10). is, such that water from the first pipe section (3) can be fed into the third pipe section (10), and wherein the second pipe section (9) is oriented in the direction of the fourth pipe section (11), such that water from the second pipe section (4) can be fed into the fourth pipe section (10). Pipe interrupter (1) according to claim 8, characterized in that the third pipe section (10) and the fourth pipe section (11) open into a common outflow section (15), the common outflow section (15) preferably having a pipe socket (12) or a siphon having. Pipe interrupter (1) according to claim 8 or 9, characterized in that the third pipe section (10) has a section (13) which tapers with respect to its cross section, which tapered section (13) is preferably aligned in such a way that it points in the direction of the fourth pipe section ( 11) is directed. Pipe interrupter according to one of the preceding claims 1 to 7, characterized in that the drain section (7) is provided by a pipe section, the pipe section having a section which tapers with respect to its cross section, which tapered section is arranged such that the water curtain flowing out of the at least one first outlet opening (8) hits the tapering section and is deflected in the direction of the central axis of the pipe section. Pipe interrupter (1) according to one of the preceding claims, characterized in that the first pipe section (2) and the second pipe section (4) are connected to the drain section (7) via webs (14) which extend along the free flow path; or that the first pipe section (2) and the second pipe section (4) housing parts are connected to the drain section (7) in such a way that the free flow path is guaranteed. Pipe interrupter (1) according to one of the preceding claims, characterized in that the pipe interrupter (1) further has at least one ventilation channel (20) which ends with at least one ventilation opening (21), the first outlet opening (8) being around the at least one Ventilation opening (21) extends around. Arrangement comprising a pipe interrupter (1) according to one of the preceding claims, a cold water pipe and a hot water pipe, wherein the first pipe section (2) is connected to the cold water pipe and wherein the second pipe section is connected to the hot water pipe, such that with the in the cold water pipe The water curtain (W) can be provided for flowing water and that the water flowing in the hot water pipe is surrounded by the water curtain (W). Arrangement according to claim 14, characterized in that the hot water pipe and the cold water pipe have a valve that can be controlled by a hygiene flush control. Use of a pipe interrupter (1) according to one of the preceding claims 1 to 13, characterized in that the first pipe section is connected to a cold water pipe and that the second pipe section is connected to a hot water pipe in such a way that the water curtain is formed with the water flowing in the cold water pipe (W) can be provided and that the water flowing in the hot water pipe is surrounded by the water curtain (W). Use according to claim 16, characterized in that the Hot water pipe and the cold water pipe have a valve that can be controlled by a hygiene flush control.

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