DE202021104440U1 - Drinking water installation - Google Patents

Abstract

Drinking water installation with a supply line (8, 10) provided downstream of the point of transition (2) for drinking water, which supplies several points of withdrawal (14) of drinking water, and a flushing valve (22) adapted to flush the supply line (8, 10) ), which is provided downstream of the last point of withdrawal (14) of drinking water and connects the supply line (8, 10) to a flushing line (32), the flushing valve (22) being control-coupled to a flushing control (24) which Flushing valve (22) activated for flushing the supply line (8, 10), characterized in that the flushing line (32) drains via a free outlet (42) into a container (44) which is provided with an overflow (46) and the a means (52) for discharging water contained in the container (44) is assigned to which a supply line for non-drinking water (54) with at least one consumer (56) is arranged downstream in the direction of flow, and that the Container (44) is assigned a level detection and a level control (38) which lets water into the container (44) as a function of the level detection.

Description

The present invention relates to a drinking water installation with a supply line provided downstream of the point of transition of drinking water, which supplies several points of withdrawal of drinking water, and a flush valve adapted to flush the supply line, which is provided downstream of the last point of withdrawal of drinking water and connects the supply line with a flushing line. In terms of control, the flushing valve is coupled to a flushing control which activates the flushing valve for flushing the supply line.

Such a drinking water installation is over EP 1 845 207 B1 known.

The previously known drinking water installation leads to hygienically perfect drinking water in the installation when operated appropriately. The flushing control monitors, for example, stagnation in that the failure to draw water at a point of withdrawal and / or a rise in temperature for cold water or a drop in temperature for hot water is detected and evaluated to trigger a flushing process. The flush valve is activated during the flushing process. Hygienically questionable or questionable drinking water is released from the drinking water installation. In the prior art, the drinking water is usually fed directly to the point of delivery for industrial water.

The present invention is based on the problem of specifying a solution that allows the food, drinking water, to be handled more gently.

To solve this problem, a drinking water installation with the features of claim 1 is proposed with the present invention.

In this drinking water installation, the flushing line drains through a free outlet into a container. The container is provided with an overflow which communicates with the discharge point for process water, usually via a free outlet. Water is fed to the sewage disposal system via this free outlet. Accordingly, the outflow stream communicates with the transfer point of wastewater to the public disposal network directly via pipes.

For the further discharge of water contained in the container, a means for discharging, for example a pump, is assigned to the container. A supply line for non-potable water with at least one consumer, preferably an FK5 line system, is arranged downstream of the means for dispensing. In other words, the means for dispensing supplies a pipe system for non-drinking water.

As an FK5 line system, a line system for liquids of category 5 is in accordance with DIN 1988 Understand part 100, application table A1. It is a pipe system that must be separated from a drinking water system, as it must be prevented in any case that in the case of unfavorable pressure conditions, contaminated water or other liquids are sucked back into the drinking water supply network of the drinking water installation. Here the container creates a system separation with the free outlet of the flushing line into the container.

The container is also assigned a level detection system and a level control for letting water into the container. The fill level control receives information about the fill level of the container from the fill level detection. When there is a significant need due to the operation of the pump and a drop in the level in the container, the level control takes care of the admission of water into the container.

In the solution according to the invention, this can take place in that the flushing of a supply line and the filling of the container take place synchronously. In this way, water is used synergistically in order, on the one hand, to achieve hygienically harmless conditions in the pipeline network carrying drinking water and, on the other hand, to provide a sufficient volume of liquid for the supply of non-drinking water in the container.

The flush control and the fill level control usually communicate with one another in terms of data in order to achieve the best possible use of the water in the drinking water installation. At least one of the controls can, for example, use artificial intelligence based on observations on usage and consumption behavior to predict that the container will soon be filled, caused by flushing, and then suspend filling of the container despite the low level in the container.

The means for dispensing is preferably connected to the level control in terms of control. In the case of a pump as the means for discharging, the level control can have a relay that supplies the pump with electrical drive energy.

An inlet valve which controls the inflow of water into the container is usually assigned to the container. In terms of control, this is usually associated with the flushing control and / or the Level control connected. Said inlet valve is usually arranged downstream of the flushing valves. This allows a flush valve to remain open. In this case, the flushing function of the corresponding flushing valve is effected by actuating the inlet valve. Of course, if several flushing valves and supply lines leading to them are supplied in parallel, certain flushing valves can be kept open in alternation and their flushing function can be taken over temporarily by the inlet valve. To prevent drinking water from flowing back in the direction of the supply line, each flush valve is preferably assigned a backflow preventer provided in the flow direction upstream or downstream of the flush valve. The backflow preventer is preferably provided behind the flushing valve and immediately before a branch into the flushing line. This backflow preventer prevents water from flowing back through the corresponding flush valve and into the supply line connected to it. The backflow preventer is usually arranged between the flushing valve and a flushing valve assigned to another supply line. The multiple flushing valves are usually connected to the same flushing line which opens into the one container.

The inlet valve is arranged downstream of the at least one flushing valve in the direction of flow. The inflow valve is usually also arranged downstream of an inflow valve in the flow direction, which is provided between a container supply line and the flushing line. The inflow valve blocks the container supply line from the flushing line. The container supply line is usually laid parallel to the at least one supply line which supplies the points for drawing off drinking water and at the end of which the flushing valve is provided. The container supply line forms a relatively direct connection between the point of transition from drinking water and the free outlet into the container. The container supply line is used to fill the container if, by flushing the supply lines by actuating the flushing valves, no sufficient supply pressure can be obtained to ensure adequate filling of the container, for example due to drinking water being drawn from a point upstream of the flushing valve in the direction of flow.

The container supply line preferably serves no other purpose than the direct connection between the point of transition and the inlet valve for filling the container. To check a sufficient system pressure in the area of the inlet valve, the flushing line leading to the inlet valve can be provided with a pressure sensor. Its signal is evaluated to control the inlet valve, preferably in the level control, which is usually set so that a sufficient volume is provided inside the container to allow water to be drawn at any time downstream of the dispensing means.

The level determination of the container can determine the container level in any way. In this way, the level in the container can actually be detected by sensors. Alternatively, the incoming and outgoing volume flows can also be measured directly or, based on the performance curve of the pump, for example, can be recorded and compared with one another in order to gain knowledge about the fill level.

The drinking water installation according to the invention allows the use of water diverted from the drinking water area by flushing. The pipe system carrying the drinking water is systemically separated from the container with the discharged water via the free outlet. There is therefore no risk of contamination of the drinking water. Nevertheless, the water diverted by rinsing can be used for further use. The water can be used, for example, for underfloor irrigation, in cooling towers, to clean dirty areas or animals or in open cattle troughs. The fill level control is usually not only set up to ensure that the container is sufficiently full. Rather, the level control usually also communicates with the flushing control, which receives information from sensors built into the drinking water installation and evaluates whether and when flushing should be triggered. This information can be taken into account by the level control as part of a management geared towards conserving water resources. Consumption of water downstream of the means for discharging water from the container can result in the container having to be filled and this filling being carried out by opening at least one flushing valve and the inlet valve. Thus, when the container is filled, at least one supply line is flushed at the same time and any flushing of the supply line that is otherwise soon to be carried out due to the water quality monitoring can be postponed in time. A temperature sensor can be provided for monitoring the hygienically perfect water at the tapping points for drinking water, which, in the case of cold water, triggers a flush when the water is excessively warm in the drinking water installation. In the case of a hot water system, an emerging cooling of the hot water can be interpreted as an indication that it has been standing for too long. As an alternative or in addition, a volume flow sensor can also be installed, which detects the flow of water and thus the exchange. If there is no volume flow, so is closed to stagnant water and rinsed in an appropriate manner. Alternatively or in addition, the flush can also be triggered time-controlled.

The timer of the time control for time-controlled flushing of a supply line can always be reset if, due to the low level in the container, drinking water is drained from the supply line to fill the container into the container and the supply line is sufficiently flushed.

Through regular consumption downstream of the means for discharging water from the container, the legally required water quality for drinking water in the supply lines can be maintained by using the supply lines to fill the container and thus flushing them. It can therefore happen that the water quality monitoring does not need to initiate a flush.

Advantageously, the consumer provided downstream of the means for discharging water from the container is therefore preferably a tap at which water is usually regularly consumed, for example a cattle trough, a water playground, plant irrigation or a sink for work shoes, sports shoes or work clothes.

As a rule, a sensor assigned to the supply line and / or the duration of the open position of the flushing valve is used to determine whether the supply line is sufficiently flushed when the container is filled.

Further details and advantages of the present invention emerge from the following description of an exemplary embodiment in conjunction with the drawing, which illustrates a schematic representation of an exemplary embodiment of a drinking water installation.

The exemplary embodiment only shows pipes that are possibly surface-mounted in the basement, but otherwise flush-mounted. It is a drinking water installation in accordance with the Drinking Water Ordinance with a with reference number 2 marked point of transition from water to the drinking water installation.

At this point of transition 2 are shut-off valves, a water meter 4th as well as a filter 6th installed. Downstream of the filter 6th is a supply line in the form of a riser 8th provided over different floors in floor strings 10 transforms. The riser 8th runs through several floors and preferably runs in a straight line to avoid pressure losses. Every floor line 10 runs essentially horizontally in one floor and preferably in a straight line to avoid pressure losses. From every floor line 10 go ring lines 12th from, which are provided with at least one point of extraction of drinking water. These extraction points are given a reference number 14th marked. The embodiment shows lines that are laid under plaster in the floors. At the point of removal 14th a branch line, not shown, goes from the ring line 12th to the point where the drinking water is released into the environment. The branch line can, for example, be the fluidic connection between an outlet opening of a fitting, for example a wash basin, a shower or even a toilet or bathtub and the drinking water installation. The branch line is not part of the drinking water installation but is connected to it.

In parallel with each ring line 12th the line of floors runs 10 . Between a lead-out opening 16 and a threading opening 18th , to which the ring line 12th from the strand 10 goes off and in the strand 10 is returned, is located in the floor strand 10 a throttle 20th . This choke 20th increases the flow resistance between the threading opening as a flow resistance element 16 and the thread opening 18th such that in the event of a flow in the strand, caused for example by the at the end of the strand 10 provided flush valve 22nd , both the strand 10 as well as the ring line in parallel 12th are flowed through. The same happens when drinking water is drawn from one point of withdrawal 14th , the one or more ring lines 12th is downstream in the direction of flow. Such a reference also usually resolves parallel flows in the upstream ring lines 12th and the parallel to the respective ring lines 12th provided sections of the storey line 10 the end.

The flush valve 22nd is an adjustable flush valve which is controlled by a flush control 24 connected is. The flushing valve can be set by a motor-driven actuator or by an electrically heatable expansion element. The adjusting movement is usually an axial displacement of a valve body in the direction of a valve seat or in the opposite direction away from the valve seat. Immediately downstream of the purge valve 22nd is to each of the flush valves 22nd a backflow preventer 26th intended. In the strings of floors forming the supply lines 10 are sensors 28 built in, the temperature or the volume flow within the respective floor line 10 determine and data with the flush control 24 are connected. the Signals from these sensors 28 or a time module within the flush control 24 trigger a rinse. A flush valve is used as part of the flushing process 22nd or a with reference number 30th marked inlet valve at the end of a flushing line 32 actuated.

Between this inlet valve 30th and the backflow preventer 26th opens a container supply line 34 into the flushing line 32 . In the area of the mouth there is a motor-controlled inflow valve 36 provided which the container supply line 34 can shut off in the area of their end and in terms of data with a level control 38 communicates. The pressure in the flush line 32 is via a pressure sensor 40 monitored, which is also linked to the level control in terms of data 38 connected is.

At the end of the flushing line 32 there is a free outlet 42 that is in a container 44 drains. The container 44 has an overflow 46 who in turn have a free outlet 48 with a sewer pipe 50 is fluidically connected, which is out of the container 44 forwards diverted water to the municipal sewage disposal network.

With reference number 52 a pump is characterized which is designed to be adapted to the volume of liquid in the container 44 to pump out. This pump 52 realizes a means for discharging water contained in the container and communicates with the non-potable water (NPW) supply line 54 . This NPW supply line 54 supplies at least one NPW consumer 56 , for example in the form of plant irrigation, a water playground or a cattle trough.

The container 44 is also a level determination with a level sensor 60 assigned, in terms of data with the level control 38 connected is. The level control 38 likes with the pump 52 be connected. The pump can do just as well 52 depending on the internal pressure in the NPW supply line 54 be controlled and a certain supply pressure in the NPW supply line 54 maintain.

The exemplary embodiment serves to maintain hygienically harmless water, which over the points of withdrawal 14th and thus over the respective strands 8th , 10 can be taken. The condition of the water is determined by the sensors described above 28 supervised.

If these sensors indicate emerging critical hygienic conditions for the drinking water in, for example, the topmost tier 10 of the figure, the flushing control triggers 24 that are the signals from the sensors 28 processed, a rinse. The flushing can take place in that the associated flushing valve 22 is opened. Alternatively, the flushing valve 22 assigned to the floor section 10 can also be opened and flushing can be triggered by opening the inlet valve 30th . The flush control communicates for this purpose 24 with the level control 38 . Both controls 24 , 38 can be provided in a common control housing and connected to one another in terms of data. The opening of the respective valve 22; 30 leads to the flushing of the upper floor section 10 and thus to the replacement of the hygienically questionable water from the upper floor section 10. The water drained off runs into the container 44 and increases the level in the container 44 . In the exemplary embodiment shown, the actual fill level is determined by the fill level sensor 60 determined and sent to the level control 38 reported.

Used via an NPW consumer 56 Water from the container 44 removed and threatens the container 44 to run empty, so causes the level sensor 60 an opening of the inlet valve 30th . This opening is coordinated with the opening of the flushing valves 22nd to when filling the container 44 also to meet the hygienic requirements. The individual flush valves 22nd can be opened at the same time or sequentially within the scope of the container filling, in which case the other flushing valves in each case 22nd be closed at the same time. The backflow preventer 26th always prevent water from flowing back out of the flushing line 32 or another floor line 10-10.3 into one of the floor lines 10-10.3.

Provided that NPW water is withdrawn from the container 44 the amount of water released through the flushing process is not sufficient to cover the water requirement on the NPW side, for example because the operating pressure is detected by the pressure sensor 40 is too low and / or because to avoid an excessive pressure drop at the sampling points 14th Only a limited number of the flushing valves can be opened at the same time activates the level control 38 the inflow valve 36 . Bypassing strands 8th , 10 is thus drinking water with a relatively high flow rate via the tank supply line 34 fed. This is ideally only for the inflow of water into the container 44 relocated. Also this container supply line 34 can be provided with sensors that detect the need to flush the line 34 Show.

Excessive consumption of liquid from the container 44 can also be met by having different flush valves 22nd be put in parallel to make up multiple strands 10 Drain water. But there will only be so many Flushing valves open in parallel that the drinking water supply to the extraction points 14th does not collapse due to the loss of pressure.

This is how the container supply line is used 34 not just filling the container 44 , but also to avoid excessive pressure loss in the drinking water installation when filling the tank 44 .

Sets the flush control 24 due to the sensor signals of the sensors 28 In the above-described initial situation, in which the flush valve of the upper floor section 10 is open, it is determined that, for example, in the lower floor section 10 there are or threatened hygienically questionable conditions, the upper flush valve 22 is closed and the lower flush valve 22 is opened. This will ensure the supply of the container 44 take place at the same time. In this case the backflow preventer prevents 26th to the respective storey strands 10 or 10.3, a backflow due to a temporarily different pressure at the end of the respective branch line 10, which flows via the flushing line 32 are connected to each other. As a result, the purge valve 22 is opened. The corresponding story line 10 is flushed.

The level control 38 in any case controls the inlet valve 30th so that this opens. The inlet valve 30th therefore does not become due to water draining from the container 44 opened, but controlled by the flushing process. From the flush line 32 the water drained off as part of the rinse flows into the container 44 . One in the level control 38 stored specification that the level of the container 44 should not rise so far that water is out of the container 44 and about the overflow 46 into the sewer 50 has to be switched off by the flushing control. If the water removed by rinsing exceeds the capacity of the container 44 or finds no consumption of NPW water in the NPW supply line 54 instead, it does so by rinsing the container 44 water supplied via the overflow 46 derived in the manner previously described.

If the hygienic conditions in the floor section 10 are restored, the corresponding flush valve 22 closes. The level control 38 receives a corresponding signal so that the level control 38 goes back to the usual operating mode, in which the supply of the NPW supply line 54 is done with water and only ensures that the container 44 is sufficiently filled and that the inflow of water into the container 44 before reaching the overflow 46 is stopped.

As shown, the exemplary embodiment can be used to supply NPW consumers with water removed by flushing. In this way, water is used sparingly. In addition, hygienically safe conditions in the drinking water supply lines are guaranteed by flushing.

List of reference symbols

2

Point of transition

4th

water meter

6th

filter

8th

Riser

10

Story line

12th

Ring line

14th

Point of removal

16

Threading opening

18th

Threading opening

20th

throttle

22nd

Flush valve

24

Flush control

26th

Backflow preventer

28

sensor

30th

Inlet valve

32

Flushing line

34

Container supply line

36

Inflow valve

38

Level control

40

Pressure sensor

42

free run

44

container

46

Overflow

48

free run

50

Sewer

52

pump

54

NPW supply line

56

NPW consumers

60

Level sensor

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• EP 1845207 B1 [0002]

Non-patent literature cited

• DIN 1988 [0008]

Claims (9)

Drinking water installation with a supply line (8, 10) provided downstream of the point of transition (2) for drinking water, which supplies several points of withdrawal (14) of drinking water, and a flushing valve (22) adapted to flush the supply line (8, 10) ), which is provided downstream of the last point of withdrawal (14) of drinking water and connects the supply line (8, 10) to a flushing line (32), the flushing valve (22) being control-coupled to a flushing control (24) which Flushing valve (22) activated for flushing the supply line (8, 10), characterized in that the flushing line (32) drains via a free outlet (42) into a container (44) which is provided with an overflow (46) and the a means (52) for discharging water contained in the container (44) is assigned to which a supply line for non-drinking water (54) with at least one consumer (56) is arranged downstream in the direction of flow, and that the Container (44) is assigned a level detection and a level control (38) which lets water into the container (44) as a function of the level detection. Drinking water installation according to Claim 1 , characterized in that the container (44) is assigned an inlet valve (30) which controls the inflow of water into the container (44) from at least one line (32; 34) of the drinking water installation and which is controlled with the flushing control (24). and / or the level control (38) is connected. Drinking water installation according to Claim 2 , characterized in that the inlet valve (30) controls the filling of the container (44) via at least one flushing line (32) of the drinking water installation. Drinking water installation according to Claim 2 or 3 , characterized in that the feed valve (30) controls the filling of the container (44) via at least one container supply line (34) which is laid parallel to a supply line (10) communicating with one of the flushing valves (22). Drinking water installation according to Claim 3 and 4th , characterized in that the inflow valve (30) is arranged downstream of the at least one flushing valve (22) and an inflow valve (36) which is provided between the container supply line (34) and the flushing line (32). Drinking water installation according to one of the preceding claims, characterized in that the supply line (8, 10) in any case runs in sections parallel to a ring line (12) which is connected to the supply line via a threading opening (16) and a threading opening (18) provided downstream for this purpose (8, 10) and which has at least one point of extraction (14) of drinking water, a flow resistance element (20) being provided in the supply line (8, 10) between the threading opening (16) and the threading opening (18). Drinking water installation according to one of the preceding claims, characterized in that each flush valve (22) is assigned a backflow preventer (26) provided in the direction of flow upstream or downstream of the flush valve (22). Drinking water installation according to one of the preceding claims, characterized in that the flushing control (24) and the filling level control (38) are connected to one another in terms of data. Drinking water installation according to one of the preceding claims, characterized in that the means (52) for discharging water contained in the container is connected to the level control (38) in terms of control.

Images