Drinking water and domestic water system and stop valve thereof

Abstract

The invention relates to a drinking water and domestic water system having a transfer point (22) from a public water supply network, pipelines (2, 4), at least one annular main part (10; the annular main part (10) branches off from the pipeline (2, 4) through an outlet opening (14) and returns into the pipeline (2, 4) through an inlet opening (16), the pipeline (2, 4) and the annular main part (10) are guided in parallel, and a flow resistance element (36) is arranged in the pipeline (2, 4) between the outlet opening (14) and the inlet opening (16), or wherein the annular main part (38, 40) is returned into the circulation line (6) through the inlet opening (16). The invention also relates to a stop valve for drinking water and domestic water systems.

Description

Technical Field

[0001] The invention relates to a drinking water and domestic water system having a transfer point from a public drinking water supply network and at least one floor or riser pipeline, and usually having a plurality of pipes which are arranged one behind the other in the extension direction of the pipeline and each of which leads to at least one tapping point branching off from the pipeline. Background Art

[0002] A generic drinking water and domestic water system is known, for example, from EP 1 845 702 A1.

[0003] Similar to the system according to the invention, this previously known system is based on the idea that water can be supplied to different consumers via one pipeline. The pipeline is a floor or riser pipeline. Riser pipelines usually extend through multiple floors in a strictly straight form. The same is true for floor pipelines. Floor pipelines extend horizontally on a floor and supply multiple wet rooms or apartments in a row. In order to provide drinking water and domestic water to one of the consumers with as little loss as possible, unnecessary deflections from the transfer point to the consumer are usually avoided. In this way, each pipeline is laid as straight as possible. This makes it possible to supply a good line pressure to each consumer. Therefore, a relatively high volume flow can be achieved at each consumer. With regard to drinking water hygiene, at least one consumer is preferably connected via an annular main part, preferably multiple consumers, such as at least one consumer in a wet room. The annular main part leaves the pipeline through an outlet opening and returns to the pipeline through an inlet opening. A flow resistance element is arranged in the pipeline between the inlet opening and the outlet opening. When water is drawn from a consumer arranged downstream of the respective annular main part, the flow resistance element causes a certain flow to pass through the annular main part. The flow resistance element can generate a Venturi effect at the inlet opening. The flow resistance element can also increase the flow resistance in the pipeline only so that a certain partial flow flows through a relatively long annular main part, so that the flow resistance of this partial flow is higher than the pipeline part between the outlet opening and the inlet opening. This means that when water is drawn from a consumer located downstream, the water flows through the annular main part parallel to the pipeline and is therefore flushed out.

[0004] The flow resistance element can be a flow resistance element of static construction, as is known, for example, from EP 1 845 702 A1. The flow resistance element can also be implemented in an annular main flushing valve, which forms an inlet opening and an outlet opening and two openings for pipeline flow, which are usually opposite to each other. The flow resistance element can also be a flow resistance element that dynamically adapts to pressure conditions, as described in EP 2 167 740 A1. In this prior art, the full-flow stop valve is located directly near the outlet opening. Another full-flow stop valve is arranged directly upstream of the outlet opening. The two stop valves can shut off the annular main part for maintenance purposes or during installation and disconnect the annular main part from the general distribution network of the drinking water and domestic water system. The corresponding full-flow stop valve can also be used to test the function of the annular main part. Summary of the invention

[0005] Within the meaning of the invention, an annular main element can also be understood as an annular pipe system, in which a hot water supply line leads from an outlet opening of the hot water supply line to at least one consumer, usually to different consumers, the line returns through an inlet opening and is connected to a further line, hereinafter referred to as a circulation line, through which the wet room is usually supplied with a hot water supply line located in the wet room and a hot water circulation line located in the wet room, the hot water supply line usually merging into the hot water circulation line in the wet room and the nominal diameter of the hot water circulation line being smaller than the nominal diameter of the hot water supply line.

[0006] The installation of the two stop valves is labor intensive. Furthermore, the user often has no way of keeping track of the respective valve positions. Incorrect use of the stop valves can lead to insufficient or stagnant flows, especially in the annular main part. One of the stop valves can be closed while the other is open, but this does not necessarily lead to malfunctions, since in this case the consumer arranged in the annular main part is guided via the open stop valve. In this case, it is not important whether the opening that allows the consumer to be supplied with the annular main part is the inlet opening or the outlet opening. The pressure difference acting on the consumer when drawing water always causes the water to flow to the consumer, so that the water can be diverted via the consumer.

[0007] In addition, the valves must be accessible, so passages or inspection flaps corresponding to the number of valves must be provided to operate the corresponding valves. When the corresponding valves are installed in an apartment, at least the aesthetics of the area for access to the stop valves is affected.

[0008] The invention aims to provide a drinking water and domestic water system of the type mentioned in the introduction, which aims to prevent misuse as much as possible and improve the traceability of operation and installation. It also aims to simplify the process of disconnecting the annular main part for functional tests, cleaning measures or maintenance purposes.

[0009] In this regard, the present invention proposes to connect the outlet opening and the inlet opening and the annular main part to a single stop valve. This stop valve has an actuator for setting the valve position. The stop valve is located between the outlet opening and the inlet opening and the annular main part including at least one consumer. Usually no consumer is arranged between the stop valve and the pipeline. The stop valve is connected to the pipeline as directly as possible and the outlet opening and inlet opening arranged at the pipeline. The stop valve is preferably located at a point corresponding to the full-flow stop valve according to EP 2 167 740A1. The stop valve can be implemented as a structural unit together with an annular main flushing valve and distributed with the annular main flushing valve, for example. The outlet opening and the inlet opening formed by this annular main flushing valve are adapted to the connection parts on the pipeline side in terms of relative distance, which are arranged on the housing of the stop valve, the housing accommodates the actuator and the actuator is mounted in a movable manner. Therefore, a direct connection can be established between these pipeline-side connections and the outlet opening or the inlet opening, for example by fittings or threaded connections distributed to each other. In this case, the actuator is arranged to achieve at least the positions known in the prior art in which the annular main part can flow through the outlet opening and the inlet opening with the lowest possible flow resistance in the shut-off valve, or the annular main part is disconnected from the pipeline. These two valve positions can usually be achieved by operating a single actuator of the shut-off valve. This simplifies operation. In addition, only one inlet for the shut-off valve needs to be provided from the outside, which increases the aesthetic requirements of the space allowing access to the shut-off valve. Since the user only needs to operate or set a single shut-off valve, appropriate features on the housing and / or the actuator can be used to communicate the corresponding operating state of the shut-off valve to the user. Therefore, misuse is largely excluded. The corresponding operating state of the shut-off valve is immediately visible to the user.

[0010] "Stop" here means that a stop connection in the stop valve is not fluidically connected to any other connection of the stop valve. The valve position, typically all valve positions, are typically achieved by positioning a single actuator of the stop valve and / or by actuating a single actuator.

[0011] The housing of the stop valve usually has a first pipeline side connection portion that is communicated with the outlet opening. The housing also has a second pipeline side connection portion that is communicated with the inlet opening. The housing also has a first annular main part side connection portion and a second annular main part side connection portion. The annular main part extends from these two annular main part side connections. In other words, the annular main part is connected to the housing through the two annular main part side connections. The actuator is preferably arranged in the housing and configured so that the operating position of the actuator and the bypass position of the actuator can be set. In the operating position of the actuator, a first flow path is formed in the housing, which connects the first pipeline side connection portion to the first annular main part side connection portion. In this operating position, a second flow path is also formed in the housing, which connects the second pipeline side connection portion to the second annular main part side connection portion. In this operating position, this produces a flow through the annular main part, and a parallel flow acts in the pipeline, just as in the case of opening a full-flow stop valve in the prior art.

[0012] In order to ensure that the flow through the stop valve is as loss-free as possible, the first flow path is preferably formed with the nominal diameter of the first line-side connection and the first annular main part-side connection. The second flow path is preferably formed with the nominal diameter of the second line-side connection and the second annular main part-side connection. Thus, preferably the full flow through the stop valve is achieved in the operating position.

[0013] Furthermore, the actuator is preferably arranged in the housing and configured such that: in the bypass position of the actuator, a first bypass path is formed in the housing, which connects the first pipeline side connection to the second pipeline side connection. The first annular main part side connection and the second annular main part side connection are closed. Thus, the bypass position enables a bypass flow from the outlet opening to the inlet opening to bypass the annular main part, so that it can be accessed for maintenance purposes, for example, without having to depressurize the entire drinking water and domestic water system. At normal flow rates in the pipeline, the flow through the bypass path is limited to less than 3 liters / minute. The bypass position also allows water to be drawn from a consumer downstream of the annular main part in the pipeline.

[0014] In addition to the operating position and the bypass position, due to the configuration and arrangement of the actuator in the housing, the actuator is preferably capable of realizing further operating positions, namely a first one-sided operating position in which the first flow path is continuous and the second flow path is blocked, and a second one-sided operating position in which the second flow path is continuous and the first flow path is blocked. Each of these one-sided operating positions enables functional checks and cleaning measures to be carried out in the annular main element or in certain parts of the annular main element, since the inflow can only flow into the annular main element from one direction of the pipeline.

[0015] Preferably, the actuator can be arranged in the housing and configured such that: in the annular main part bypass position of the actuator, a second bypass path is formed in the housing, which second bypass path connects the first annular main part side connection to the second annular main part side connection. In this annular main part bypass position, the first pipeline side connection and the second pipeline side connection are shut off. Such an annular main part bypass position can be used for functional testing of the annular main part itself or also for cleaning measures within the annular main part.

[0016] The present invention allows various configurations, each of which allows the installation space to be reduced in one dimension. Both variants assume that the actuator is constructed as a cylindrical shape and is accommodated in a housing in a pivotable manner. In a first variant, the connecting parts and / or forming parts of the actuator are basically arranged in a plane extending transversely to the pivot axis of the actuator, and these connecting parts and / or forming parts form different channels between the connecting parts depending on the position of the actuator. In this plane, the corresponding connecting parts are arranged and distributed around the circumferential part of the housing. Therefore, the housing has a relatively large bottom area and a shallow depth. Depth is understood here as an extension along the pivot axis. This structure is beneficial for accommodating relatively thin walls of the stop valve.

[0017] For other requirements, in particular if the installation space in the plane of the corresponding wall is small, a different structure is preferred, in which the actuator has two through holes, which are arranged one behind the other in the direction extending along the pivot axis of the actuator, thereby forming a first flow path or a second flow path. Alternatively or additionally, in this variant, the first pipeline side connection can be arranged behind or in front of the second pipeline side connection in the direction extending along the pivot axis of the actuator. Preferably, the corresponding arrangement of the two annular main part side connections is specified. Therefore, in the top view of the wall corresponding to the top view of the pivot axis of the actuator, the connection part with the annular main part side or the connection part with the pipeline and / or the through holes provided for forming the first or second flow path are arranged one behind the other. Usually, the corresponding connection parts or through holes are also strictly positioned one behind the other in the direction of the pivot axis. Therefore, one pipeline side connection part is located directly in front of or directly behind the second pipeline side connection part along the pivot axis. This also applies to the annular main part side connection part. The pipeline-side connection portion is preferably radially opposite to the annular main-piece-side connection portion, so that the through hole can be recessed into the interior of the actuator as a straight hole, thereby reducing the flow resistance in the stop valve.

[0018] According to a preferred further development of the invention, the actuator has an expansion element which is assigned to at least one of the flow paths. The expansion element allows a temperature-dependent throttling of the flow passage through the respective flow path. The expansion element is exposed to the temperature of the flowing drinking water and domestic water. The expansion element can thus limit the flow through the shut-off valve in dependence on the temperature.

[0019] Therefore, the stop valve is also suitable for hydraulic balancing in hot or cold water systems. With a plurality of stop valves, each of which is assigned to a ring main, a temperature-based throttling of the corresponding ring main is carried out by means of an expansion element, depending on the temperature of the ring main. In hot water systems, the expansion element can ensure that when the water in the ring main is hot enough, the flow through the corresponding ring main is gradually throttled by the expansion element, or even disconnected. In cold water systems, the expansion element can be set to an appropriate cold temperature, and if the water temperature in the ring main is cold enough, the flow in the ring main can be gradually restricted or even stopped, while if the cold water temperature is too high, the expansion element opens more, thus ensuring a better exchange of warm, possibly stale cold water, so that this cold water can be transported out of the ring main by means of the ring main flow.

[0020] Therefore, according to a preferred further development of the present invention, a stop valve suitable for drinking water and domestic water systems of the type described above is also provided. The stop valve can be arranged near the pipeline to connect the annular main part leading out of the pipeline and returning to the pipeline, and allows flow passages through various positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Further advantages and details of the present invention will become apparent from the following description of the embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0022] Figure 1 : A schematic diagram of a first embodiment of a drinking water and domestic water system;

[0023] Figure 2 : A schematic diagram of a second embodiment of a drinking water and domestic water system, wherein only a cold water pipeline is shown;

[0024] Figure 3 : A portion of an embodiment of a drinking water and / or domestic water system, wherein only a portion of the hot water supply is shown;

[0025] Figure 4 : An exploded view of a first embodiment of a stop valve;

[0026] Figure 5a to Figure 5d : Figure 4 Cross-sectional views of various positions of the actuator of the embodiment shown in ;

[0027] Figure 6a.1 to Figure 6d.3 : A schematic side perspective view of a second embodiment of a stop valve in various positions of the actuator;

[0028] Figures 7a to 7d : Figure 6a.1 to Figure 6d.3 cross-sectional views of various locations; and

[0029] Figure 8 : Figures 7a to 7d The stop valve shown in Figure 7a In a variation of the position of the stop valve, the stop valve has an expansion element. DETAILED DESCRIPTION

[0030] Figure 1 The embodiment shown in the figure takes a hotel or hospital as an example, showing drinking water and domestic water facilities. The cold water pipeline 2 extends on the schematically shown floor, while the hot water pipeline 4 and the hot water circulation pipeline 6 are arranged in parallel with the cold water pipeline. Each wet room 8 has an annular main part 10 for cold water, which is connected to the cold water pipeline 2. Each annular main part 10 has a plurality of consumers 12, which are schematically represented by dots. Figures 1 to 3 The hidden embodiment shown in FIG. 1 is a connection. The consumer 12 can be a toilet, a shower, a bathtub or a wash basin. These consumers 12 are connected in series in the annular main part 10.

[0031] The annular main element 10 leaves the cold water line 2 through an outlet opening 14 and enters the line 2 through an inlet opening 16. The outlet opening 14 of each individual annular main element is located upstream of the inlet opening 16 in the flow direction (arrow S shown in the cold water line 2). At the beginning of the respective annular main element 10 and close to the line 2, a shut-off valve 18 is provided, which can be accessed from the corridor or the respective wet room 8 and by means of which the connected annular main element 10 can be disconnected from the cold water line 2, for example, in order to carry out assembly work on the respective annular main element 10. At this same point, a shut-off valve 20 for connecting the wet room 8 to the hot water line 4 and the hot water circulation line 6 is also located.

[0032] Figure 2 The cold water lines of a drinking water system in a multi-storey building, such as a hospital, are shown. Figure 1 As shown, water pipes are laid in each individual floor. The cold water pipeline system has: a transfer point 22 for transfer from the public drinking water supply network; a riser 24 extending in the vertical direction, from which a horizontal floor pipeline 2 extends in each floor; a vertical connecting pipe 26, which is connected to the individual floor pipelines 2 via a controllable valve 28 and leads to a discharge point 32 via a flush valve 30 that is also controllable, for discharging used water to the public wastewater treatment network. The individual cold water floor pipelines 2 extend horizontally and extend one above the other. A pipeline 2 is provided for each floor. Figure 2 In the second embodiment shown, each pipeline 2 has six annular main pieces 10 which leave the respective pipeline 2 or return to the respective pipeline 2 via outlet openings 14 and inlet openings 16 .

[0033] The outlet opening and the inlet opening of the single annular main part 10 can be connected via an annular main part flushing fitting 34, which has a flow resistance element 36 in its interior. The annular main part flushing fitting 34 can be constructed according to EP 1 845 207 A1 or EP 2 167 740 A1.

[0034] Figure 3 The connection of the wet room 8 to the hot water supply and circulation is schematically shown. From the hot water line 4, a hot water supply line 38 leads to the last consumer 12, which in this example is a shower. Behind the shower, the hot water supply line 38 merges into a hot water circulation line 40, which has a smaller nominal diameter than the hot water supply line 38 and opens into the hot water circulation line 6. The hot water line 4 and the hot water circulation line 6 are arranged parallel to each other as vertical risers 24. In this case, the hot water line 4 leads from a hot water generator arranged in the basement. The hot water circulation line 6 leads to the hot water generator. The hot water supply line 38 and the hot water circulation line 40 form an annular main part 10 in the sense of the invention. These lines 38, 40 are each connected to a stop valve 20.

[0035] Figure 1 and Figure 3 The stop valves, which are respectively designated by reference numerals 18 and 20 and are shown only schematically, can be referred to as follows. Figure 4 And constructed as described below.

[0036] Figure 4 A housing 42 of a shut-off valve 18 / 20 is shown, in which an actuator 44 is mounted pivotably about a pivot axis 46. The actuator 44 has a substantially cylindrical valve body 48 and an actuating pin 50 protruding centrally from the valve body.

[0037] like Figure 5a to Figure 5d Specifically shown, the valve body 48 has two shaped portions in the form of grooves on its outer circumferential surface, wherein Figure 4 Only the shaped portion, which is referred to below as the first groove 52, can be identified. Figure 5a to Figure 5d A further second groove 54 can be seen in FIG.

[0038] The actuator 44 is accommodated in a housing 42 covered by a housing cover 56 in a pivotable and sealed manner, so that different flow channels can be created within the housing 42, which will be discussed below.

[0039] In the lower figure, reference numeral 58 denotes a first line-side connection to be connected to the outlet opening 14 . Reference numeral 60 denotes a second line-side connection which can be connected to the inlet opening 16 .

[0040] Depending on the position of the actuator 44 , different passages through the housing 42 of the shut-off valve 18 or 20 can be provided via these connections 58 to 64 .

[0041] Figure 5a The operating position is shown. In this position, the first groove 52 is connected to the flow parts 66, 68 formed in the housing 42 to form a first flow path 70 connecting the first pipeline side connection 58 to the first annular main part side part 62. The second groove 54 connects the corresponding flow parts 72, 74 to form a second flow path 76. In this operating position, the annular main part 10 can flow through when the full flow stop valve is open, as in the prior art. The flow parts 68, 70, 72, 74 and the two grooves 52, 54 are configured so that the first flow path 70 and the second flow path 76 are configured with the nominal diameter of the respective connection parts 58, 60, 62, 64. In this example, all the connections 58, 60, 62, 64 are realized to have the same nominal diameter. In the case of a stop valve 20 for hot water circulation, the connection parts 60, 64 and the second flow channel 76 connecting the two connection parts can also be realized to have a smaller nominal diameter, which corresponds to the nominal diameter of the hot water circulation pipeline 40.

[0042] Figure 5b The bypass position of the actuator 44 is shown. In the bypass position, the actuator 44 is Figure 5a The operating position shown in FIG. 5 is pivoted clockwise by approximately 80°. The first groove 52 connects the flow portion 66 with the flow portion 72, thereby forming a first bypass path, which connects the first pipeline side connection 58 with the second pipeline side connection 60. The two annular main part side connections 62, 64 are closed by the actuator 44.

[0043] exist Figure 5c In the embodiment, the actuator 44 is relative to Figure 5b The first bypass position shown in FIG is pivoted approximately 90° clockwise. Figure 5d In another operating position, the actuator 44 is pivoted clockwise by about 60°. Figure 5d In the first one-sided operating position of the actuator 44, there is a continuous first flow path 70, while the second flow path 76 is blocked. Then, the second pipeline side connection 60 and the second annular main part side connection 64 are disconnected. Figure 5c The illustrated operating position is a second, one-sided operating position in which the second flow path 76 is continuous and the first flow path 70 is blocked.

[0044] In accordance with Figure 5a to Figure 5dIn the embodiment of , all the connecting portions 58 , 60 , 62 , 64 and the shaped portions 52 , 54 of the actuator 44 are located on a plane extending at right angles to the pivot axis 46 .

[0045] exist Figure 6a.1 to Figure 6d.3 In the embodiment shown in FIG. 1 , the same components are denoted by the same reference numerals as in the previous example. In the housing 42, the outer circumferential portion of the housing 42 is also schematically cylindrical, and the cylindrical actuator 44 is mounted in a manner that it can pivot about the pivot axis 46. On the outer circumferential portion of the housing 42, the first pipeline side connection portion 58 and the second pipeline side connection portion 60 are arranged in a manner that they are stacked up and down along the extending direction of the pivot axis 46 (see FIG. 1 ). Figure 6a.3 ). Similarly, the first annular main part side connecting portion 62 and the second annular main part side connecting portion 64 are arranged in a stacked manner (see Figure 6a.1 ). Figure 6a.2 The through holes 80, 82 are shown, which are also arranged one above the other in the extension direction of the pivot axis 46. Figure 6a.1 to Figure 6a.3 and Figure 7a In the operating position, the through hole 80 is aligned with the first pipeline side connection part 58 and the first annular main part side connection part 62. The second through hole 82 is aligned with the second pipeline side connection part 60 and with the second annular main part side connection part 64. In this way, a continuous first flow channel 70 and a second flow channel 76 are provided. In this example, the diameters of the connections 58, 60, 62, 64 and the through holes 80, 82 are the same.

[0046] Figure 6b.1 to Figure 6d.3 Other operating positions of the actuator 44 are shown. In addition to the through-holes, the valve body also has slots, some of which are shown in the figure.

[0047] Figure 6b.1 to Figure 6b.3 and Figure 7b A bypass position of the actuator 44 is shown in which the first line-side connection 58 is short-circuited to the second line-side connection 60 by means of a first groove 52 which is recessed on an outer circumferential portion of the actuator 44 . Figure 6b.1 It is shown that the first annular main part side connection portion 62 is short-circuited with the second annular main part side connection portion 64 through the second groove 54. Therefore, Figure 6b.1 to Figure 6b.3 A bypass position of the actuator 44 and an annular main part bypass position of the actuator 44 are shown, which in this example is achieved by a single position of the actuator 44 .

[0048] Figure 6c.1 to Figure 6c.3 and Figure 7cA first, one-sided operating position of the actuator 44 is shown, wherein the first pipeline-side connection 58 and the second pipeline-side connection 62 are connected to one another via a transverse hole 84 in the actuator 44, while the respective second connection 60, 64 is guided through the actuator 44. The second pipeline-side connection 62 and the second annular main-piece-side connection 64 are connected to one another via the third groove 83, so that the second annular main-piece-side connection 64 is also connected to the first pipeline-side connection 58 via the transverse hole 84.

[0049] Figure 6d.1 to Figure 6d.3 The reverse configuration is shown, in which the flow passage through the actuator 44 is realized by a transverse hole 86 through the actuator 44. The diameter of the transverse holes 84, 86 is smaller than the diameter of the through holes 80 and 82, respectively.

[0050] exist Figure 6a.1 to Figure 6d.3 as well as Figure 7d In FIG. 4 , the mark MG of the housing 42 and the mark MS of the actuator 44 are shown on the upper end surfaces of the housing 42 and the actuator 44. Figure 6a.1 to Figure 6a.3 The operating position shown in Figure 6b.1 to Figure 6b.3 , Figure 6c.1 to Figure 6c.3 and Figure 6d.1 to Figure 6d.3 The first annular main part side connection part 62 and the second annular main part side connection part 64 are connected to each other through the fourth groove 85, so that the first annular main part side connection part 62 is also connected to the second pipeline side connection part 60 through the transverse hole 86.

[0051] Figure 8 Shown according to Figure 6a.1 to Figure 6d.3 and Figures 7a to 7d In this configuration, an expansion element 88 is provided in the flow channel 80, the expansion element 88 being provided with a valve body 90 which interacts with the actuator 44 and a valve seat 92 provided in the through-opening 80. The expansion element 88 can be installed in the region of the supply line 38 to cover a tap or in the circulation line 40.

[0052] Reference numerals list

[0053] 2 Cold water lines

[0054] 4 Hot water pipeline

[0055] 6 Hot water circulation pipeline

[0056] 8 wet rooms

[0057] 10 Ring main parts

[0058] 12 Consumers

[0059] 14 Exit openings

[0060] 16 entrance openings

[0061] 18 Stop valve (TWC)

[0062] 20 stop valve (TWW)

[0063] 22 Transfer Points

[0064] 24 riser

[0065] 26 Connecting pipes

[0066] 28 valves

[0067] 30 flush valve

[0068] 32 diversion points

[0069] 34 Ring main flushing accessories

[0070] 36 Flow resistance element

[0071] 38 Hot water supply pipeline

[0072] 40 hot water circulation pipeline

[0073] 42 Shell

[0074] 44 Actuator

[0075] 46 Pivot axis

[0076] 48 Valve body

[0077] 50 Actuating pin

[0078] 52 first groove

[0079] 54 Second groove

[0080] 56 Shell cover

[0081] 58 first pipeline side connection part

[0082] 60 Second pipeline side connection part

[0083] 62 first annular main part side connection portion

[0084] 64 Second annular main part side connection portion

[0085] 66 mobile part

[0086] 68 mobile part

[0087] 70 first flow path

[0088] 72 mobile part

[0089] 74 mobile part

[0090] 76 Second flow path

[0091] 78 Bypass Path

[0092] 80 through holes

[0093] 82 through holes

[0094] 83 Third groove

[0095] 84 lateral holes

[0096] 85 Fourth groove

[0097] 86 lateral holes

[0098] 88 expansion element

[0099] 90 valve body

[0100] 92 valve seat.

Claims

1. A drinking water and domestic water system, comprising a transfer point (22) and a pipeline (2, 4), wherein the transfer point comes from a public water supply network, and at least one annular main part (10; 38, 40) provided with at least one consumer (12) branches off from the pipeline (2, 4), wherein: The annular main part (10) branches off from the pipeline (2, 4) via an outlet opening (14) and is guided back into the pipeline (2, 4) via an inlet opening (16), wherein the pipeline (2, 4) and the annular main part (10) are guided in parallel and a flow resistance element (36) is arranged in the pipeline (2, 4) between the outlet opening (14) and the inlet opening (16), or wherein the annular main part (38, 40) is guided back into the circulation line (6) via the inlet opening (16), characterized in that the outlet opening (14) and the inlet opening (16) and the annular main part (10) are connected to a stop valve (18, 20) having an actuator (44) and arranged between the outlet opening (14) or the inlet opening (16) and the annular main part (10) provided with at least one of the consumers (12).

2. The drinking water and domestic water system according to claim 1, characterized in that: The stop valve (18, 20) has a housing (42), the housing (42) having: a first pipeline side connection portion (58) communicating with the outlet opening (14), a second pipeline side connection portion (60) communicating with the inlet opening (16), a first annular main part side connection portion (62) and a second annular main part side connection portion (64), wherein the annular main part (10; 38, 40) is connected to the housing (42) via the annular main part side connection portions (62, 64), and the actuator (44) is arranged and formed in the housing (42) so that: - in the operating position of the actuator (44), a first flow path (70) is formed in the housing (42) and a second flow path (76) is formed, the first flow path (70) connecting the first pipeline side connection part (58) to the first annular main part side connection part (62), and the second flow path (76) connecting the second pipeline side connection part (60) to the second annular main part side connection part (64); - In the bypass position of the actuator (44), a first bypass path (78) is formed in the housing (42), the first bypass path (78) connecting the first pipeline side connection part (58) to the second pipeline side connection part (60), and the first annular main part side connection part (62) and the second annular main part side connection part (64) are closed.

3. The drinking water and domestic water system according to claim 2, characterized in that: The actuator (44) is arranged and formed in the housing (42) such that: - in a first one-sided operating position of the actuator (44), the first flow path (70) is continuous and the second flow path (76) is closed, and In a second, one-sided operating position of the actuator (44), the second flow path (76) is continuous and the first flow path (70) is closed.

4. The drinking water and domestic water system according to one of claims 2 to 3, characterized in that: The actuator (44) has a cylindrical shape and is pivotably accommodated in the housing (44), and the connecting parts (58, 60, 62, 64) and / or the forming parts of the actuator (44) are basically arranged in a plane extending transversely to the pivot axis (46) of the actuator (44), and the connecting parts (58, 60, 62, 64) and / or the forming parts of the actuator (44) form different channels between the connecting parts (58, 60, 62, 64) according to the position of the actuator (44).

5. The drinking water and domestic water system according to one of claims 2 to 4, characterized in that: The actuator (44) has a cylindrical shape and is accommodated in the housing (42) in a pivotable manner, and the actuator (44) has two through holes (80), which are arranged one behind the other in the direction extending along the pivot axis (46) of the actuator (44), and the through holes form the first flow path (70) or the second flow path (76), and / or the first pipeline side connection part (58) and the second pipeline side connection part (60), and / or the first annular main part side connection part (62) and the second annular main part side connection part (64) are arranged one behind the other in the direction extending along the pivot axis (46) of the actuator (44).

6. Drinking and domestic water system according to one of the preceding claims, characterized in that The actuator (44) has an expansion element (88) which is assigned to at least one of the flow paths (70; 76) and by means of which a flow channel through the respective flow path (70, 76) can be throttled depending on the temperature.

7. Drinking and domestic water system according to one of the preceding claims, characterized in that The first flow path (70) is formed to have a nominal diameter of the first pipeline side connection portion and the first annular main part side connection portion (58; 62), and the second flow path (76) is formed to have a nominal diameter of the second pipeline side connection portion and the second annular main part side connection portion (60; 64).

8. A stop valve for a drinking water and domestic water system according to one of claims 1 to 7, the stop valve comprising a housing (42), the housing having: a first pipeline side connection portion (58) communicating with the outlet opening (14), a second pipeline side connection portion (60) communicating with the inlet opening (16), a first annular main part side connection portion (62) and a second annular main part side connection portion (64), and an actuator (44), the actuator (44) being arranged and formed in the housing (42) such that: - in the operating position of the actuator (44), a first flow path (70) is formed in the housing (42) and a second flow path (76) is formed, the first flow path (70) connecting the first pipeline side connection part (58) to the first annular main part side connection part (62), and the second flow path (76) connecting the second pipeline side connection part (60) to the second annular main part side connection part (64); - in the bypass position of the actuator (44), a first bypass path (78) is formed in the housing (42), the first bypass path (78) connecting the first pipeline side connection (58) to the second pipeline side connection (60), and the first annular main part side connection (62) and the second annular main part side connection (64) are blocked, and preferably, - in a first one-sided operating position of the actuator (44), the first flow path (70) is continuous and the second flow path (76) is closed, and - in a second, one-sided operating position of the actuator (44), the second flow path (76) is continuous and the first flow path (70) is closed, and further preferably, - In the annular main part bypass position of the actuator (44), a second bypass path (78) is formed in the housing (42), the second bypass path (78) connects the first annular main part side connection part (62) to the second annular main part side connection part (64), and the first pipeline side connection part (58) and the second pipeline side connection part (60) are closed.

9. The stop valve according to claim 8, characterized in that: The actuator (44) has an expansion element (88) assigned to at least one of the flow paths (70; 76), by means of which a flow channel through the respective flow path (70, 76) can be throttled depending on the temperature.

10. The stop valve according to claim 8 or 9, characterized in that: The first flow path (70) is formed to have a nominal diameter of the first pipeline side connection portion (58) and the first annular main part side connection portion (62), and the second flow path (76) is formed to have a nominal diameter of the second pipeline side connection portion (60) and the second annular main part side connection portion (64).

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