DE102012106957A1 - Feeding arrangement for heating system of supply system used for supplying drinking water, has selectively operable flush valve that is arranged for allowing a controlled flow of accumulated stagnation water - Google Patents

Abstract

The feeding arrangement (10) has a separating device (30) with an input-side backflow preventer that is connected with an input portion (17), and an output-side backflow preventer that is connected with an output portion (23). The input portion is connected to a supply line (12) through a water pipe. The output portion is connected to a heating system through a feed line (78) for filling and/or refilling. A selectively operable flush valve (34) is arranged for allowing a controlled flow of accumulated stagnation water.

Description

The present invention relates to a supply arrangement for heating systems with a separator which has at least one backflow preventer and the input side with a supply line and the output side with a heating system for filling and / or make-up is connectable.

Pipe separation arrangements for heating systems are well known. Exemplary shows the DE 10 2007 030 654 A1 a pipe separator assembly for physically separating an upstream liquid system from a downstream liquid system having a housing with an upstream backflow preventer and a downstream backflow preventer.

The known pipe separator arrangement is primarily intended to reliably prevent backflow of liquid from a downstream liquid system into an upstream liquid system. In this way, contamination or contamination of the upstream fluid system should be avoided.

The upstream liquid system may in particular be a drinking water system. Drinking water systems and pipelines are subject to a variety of regulations and regulations designed to ensure the quality of the drinking water. In particular, it must be prevented to reliably avoid any possible backflow of contaminated or contaminated (service) water into the (clean) drinking water system.

The risk of such adverse mixing may occur, for example, during filling (food) or the refilling of heating systems or heating circuits. Typically, heating systems have at least one closed heating circuit in which a heated medium flows to release heat. The medium is usually water. Heating systems are regularly filled with drinking water.

It has long been customary to fill heating systems by means of separate filling hoses. Such filling hoses can be coupled in a suitable manner to a (drinking) water connection and to a filling connection of the heating system in order to connect them to one another. The water connection and the connection of the heating system can be opened, thus fresh water can enter the heating system. Usually, a drinking water system has a higher steady-state pressure than a heating system. Thus, the risk of backflow of contaminated or contaminated water into the drinking water system under normal circumstances is very low. However, when the pressure in the heating system approaches the pressure in the drinking water system when it is being filled, under unfavorable conditions it may already return to reflux. Furthermore, an unintended reflux threatens, for example, when in the drinking water system due to maintenance or due to pipe damage, only a reduced pressure prevails.

Furthermore, filling systems for heating systems are known, which are permanently coupled to both the drinking water system and the heating system. Such systems may be referred to as a pipe separator or system separator. A pipe separator regularly has at least one backflow preventer. In addition, one or more shut-off valves may be provided in the pipe separator.

A non-return valve can be designed such that a connection between the drinking water system and the heating system only comes about when there is a higher pressure in the drinking water system compared to the heating system.

A functional, sufficiently dense heating system loses only little (water) pressure over time. Thus, the period of time required for refilling may easily include several months or even years. Against this background, it seems reasonable for a large group of users to manually fill the heating system. However, systems are generally known in which a refilling takes place automatically when the pressure in the heating system has fallen below a certain value.

Against this background, the invention has for its object to provide a feed arrangement for heating systems and a heating system with such a food arrangement, which granted a high reliability and simple to build and ease of use and possibly contribute to avoid system damage or other impairments.

This object is achieved by a feed arrangement for heating systems, having a separating device which has at least one backflow preventer, in particular an input-side backflow preventer connected to an input and an output-side backflow preventer connected to an output, wherein the input can be connected to a supply line, in particular a drinking water line is, wherein the output with a heating system, in particular a feed line, for filling and / or make-up is connectable, and with a selectively operable Flushing fitting that allows controlled drainage of stagnant water.

The object of the invention is completely solved in this way.

It is true that feed arrangements which have pipe separators can ensure with sufficient certainty that a return flow of contaminated or polluted water from the heating system into the drinking water system is avoided. However, it must also be taken into account the fact that only a sporadic water flow rate occurs in supply arrangements for heating systems. As already mentioned above, time intervals between two filling processes in a fundamentally functional heating system can easily comprise several months or even years. During this period of time, the water standing upstream (or rather jammed) upstream of the at least one backflow preventer can not be sufficiently circulated or even exchanged, so that an increase in contamination, in particular microbial contamination, can be expected to a great extent. There is a general danger that pathogens or the like may multiply beyond a critical extent in this dammed up water (stagnation water). The thus contaminated water is basically connected to the drinking water network, such as a house supply network in connection. Thus, there is a risk that the ready for hygienic or nutritional purposes water no longer meets the high demands made on drinking water.

Normative regulations, such as the so-called Drinking Water Ordinance, may include various regulations for the purpose of achieving the highest possible purity of drinking water. By way of example, maximum residence times or retention periods can be defined, beyond which the stagnant water is no longer considered to be drinking water.

Thus, in known food arrangements also threatens a contamination of the drinking water when the return of water from the heating system is effectively prevented.

On the other hand, the food arrangement according to the invention makes it possible to carry out regular rinsing operations in the stagnation area, that is to say, for example, in the storage area immediately upstream of the inlet-side backflow preventer, so that sufficient "throughput" can be achieved. This can be done in a simple manner without adverse effects on the heating system, ie without causing pressure fluctuations or the like there. In this way, the heating circuit can continue to be coupled in principle directly with the drinking water system to fill the heating system, if necessary, can.

The separating device can basically be a pipe separator or system separator. Such a pipe separator usually has two series-arranged rectified backflow preventer, which delimit a so-called middle chamber. The middle chamber may be coupled to a drain valve, for example, which is pressure-dependent controllable. The drain valve usually responds when an upstream pressure (in the potable water system) decreases to empty the center chamber (medium pressure chamber). In particular, the discharge valve is not suitable for safely flushing an upstream region (admission pressure chamber) upstream of the inlet-side non-return valve.

The term "downstream" indicates the direction of the water flowing from a region of high pressure to a region of lower pressure. Usually, the water flows from the supply line in the drinking water system in the direction of the feed line of the heating system. The term "upstream" indicates the opposite direction.

According to a further embodiment, the flushing valve is arranged upstream of the input-side non-return valve. Alternatively or additionally, the flushing valve may be arranged between the inlet-side non-return valve and the outlet-side non-return valve.

It is understood that the flushing valve can basically also be coupled both upstream of the input-side backflow preventer and between the input-side backflow preventer and the output-side backflow preventer. Thus, the flush valve may be connected as a Y-shaped branch both with the pre-pressure chamber and with the medium-pressure chamber. Even in the medium-pressure chamber, water can be in stagnation for a long time. Consequently, an undesired contamination can also take place here. In a filling process, under unfavorable circumstances, a transfer of subsets into the admission pressure chamber and thus into the drinking water system can take place. Thus, it seems basically advantageous to be able to flush both the admission pressure chamber and the medium-pressure chamber in a controlled manner. In this way, the risk of drinking water pollution can be further reduced.

According to a further embodiment, the flush valve has a mechanical valve for discharging stagnation water, which is coupled to a handle.

The valve may be, for example, a check valve, for example, a ball valve, a butterfly valve, a ring valve, a plug valve, a cylinder valve, or the like. The valve may also be designed as a lift valve or as a rotary valve. The handle may include about a pivot lever or a rotary knob. A mechanical valve can be easily opened and closed by an operator, caretaker or service staff. It is advisable to give recommendations for intervals in which dammed stagnant water should be drained.

According to an alternative embodiment, the flushing valve to a valve for discharging stagnant water, which is controllable with an actuator, in particular a solenoid valve.

The valve may be suitably coupled to, for example, a drive to allow the selective flow of stagnant water. Such a valve is particularly suitable for automation. When designed as a solenoid valve, it is recommended that the valve be designed as a normally closed valve. Thus, an energy expenditure is only required if the flush valve is actually to be opened. However, the valve can also be designed as a motor-operated valve. By way of example, the valve may be suitably coupled to a linear motor.

According to a further embodiment, the feed arrangement further comprises a control device which is designed to selectively open the valve of the flushing valve in order to allow a controlled flow of dammed stagnation water.

The control device can control the valve, in particular a valve actuator, in a suitable manner in order to open it to initiate a flushing process. This process can be initiated manually, such as by pressing a button or flipping a switch. Alternatively or additionally, however, the control device can also be designed for automated control of the flushing fitting.

In this context, it may also be advantageous if the feed arrangement further comprises at least one detection device which is coupled to the control device, wherein the at least one detection device is designed for time detection and / or for detecting a flow rate.

In this way, the rinsing process can be carried out, for example, as a function of time and / or flow rate. Thus, the rinsing process can be initiated by way of example at defined time intervals. It is also conceivable to initiate the rinsing process, for example, when no or only a small flow has been detected over a certain period of time. Such a period may be about 72 hours or 7 days.

By way of example, the detection device embodied as a flow meter can be arranged downstream of the outlet-side non-return valve. Thus, the amount of water that is supplied to the heating system can be detected in a simple manner. In this way, the detection device can also be used, for example, to detect a possible defect in the heating system, which is characterized by an increased "water consumption".

According to a further embodiment, the flushing fitting can be coupled by means of a free outlet and / or a pipe breaker with a drainage for stagnant water.

By this measure, it can be ensured that no stagnation water, which is intended for disposal, can be forced through the flushing fitting back into the feed arrangement. Alternatively or additionally, the drain may further comprise a check valve. In drinking water systems, the problem of "pushing back" wastewater must always be considered. This can happen, for example, when waste lines are overloaded due to defects or excessive rainfall. It is therefore advantageous to separate the food arrangement effectively in this regard from possible sources of contamination.

According to a further aspect, the flushing fitting is coupled to at least one flushing channel, which is arranged in a depression of an antechamber or middle chamber of the feeding arrangement.

The depression may be, for example, a recessed trough-type or pot-like installation having a lower level than surrounding components. In the sink, suspended particles or similar impurities can collect. In the sink, moreover, usually only an extremely small circulation of water takes place. Thus, contamination and contamination of the stagnant water in the area of the sink can be discharged and removed particularly effectively.

According to a further embodiment, the feed arrangement further comprises a filtering device for filtering water, wherein the filtering device is preferably arranged downstream of the output-side non-return valve.

By way of example, the filtration device may have a backwashable filter. It is basically conceivable, alternatively or additionally, to arrange a filter device in front of the input-side backflow preventer. Such a filtering device can serve as a coarse filter, for example. Thus, for example, two jointly realized filtration devices are conceivable.

On the one hand, the filtration device can serve to prevent an entry of potentially harmful particles into the heating system. However, the filter device can also prevent in a reverse manner a return of particles that have been dissolved about in the heating system.

According to a further embodiment, the feed arrangement further comprises a pressure regulator, in particular a pressure reducer, which is preferably arranged downstream of the output-side non-return valve.

In this way, the heating system can be protected in particular during filling against excessive line pressure in the supply line. As mentioned above, it is desirable to fill the heating system with a sufficiently high pressure, which, however, is significantly lower than a common pressure in the drinking water system.

In another aspect, the feeder assembly further includes a demineralizer, which is preferably located downstream of the exit side non-return valve.

In this way, the heating system can be protected from potentially harmful minerals in the feed water. In drinking water, minerals are generally dissolved that regularly do not adversely affect human compatibility. However, technical installations, in particular pipelines or the like, can be damaged by excessive amounts of minerals (long-term). By means of the demineralizer, for example by means of an ion exchange, the water quality can be optimized to protect the heating system.

It is further preferred if the feed arrangement has a separating module which accommodates at least the inlet-side non-return valve and the outlet-side non-return valve, wherein the purge fitting is furthermore preferably arranged on the separating module.

Thus, the food arrangement can be constructed basically modular. The module structure can be characterized by standardized fastening dimensions and connection dimensions as well as dimensions. Thus, the feed arrangement can be integrated into existing systems by way of example in a simple manner as a retrofit solution. The module structure can also allow a high degree of flexibility with regard to required functions and additional components.

In this connection, it is further preferred if the feed arrangement further has at least one expansion module which is coupled to the separation module and which is arranged in particular downstream of the separation module, wherein the expansion module accommodates at least one of the following components: The control device, the filtration device, which at least a detector, the pressure regulator, and / or the demineralizer.

Alternatively, it is also conceivable to provide at least some of these components in the separation module. The separation module and the expansion module can be connected to one another on the housing side and provide a channel for water flowing through, to which the other components are coupled. It is understood that the expansion module can be coupled to the separation module via a control line, for example, if a detection device and / or control device is provided on the expansion module, via which the valve of the flushing fitting can be controlled (automated).

It is further understood that the food arrangement, in particular the separation module or the expansion module can be provided in a suitable manner with locking fittings. Such blocking valves can reliably prevent a flow from the supply line in the direction of the feed line in both directions. In this way, the assembly, disassembly, maintenance, cleaning and fault diagnosis in the feed arrangement can be simplified.

The object of the invention is further achieved by a supply system with a heating system with at least one heating circuit, and with a feed arrangement according to one of the preceding claims.

It is understood that the features of the invention mentioned above and those yet to be explained below can be used not only in the particular combination indicated, but also in other combinations or in isolation, without departing from the scope of the present invention.

Further features and advantages of the invention will become apparent from the following description of several preferred embodiments with reference to the drawings. Show it:

1a a simplified side view of a feed arrangement with a separation module, with is coupled to a supply only partially shown;

1b a simplified side view of an expansion module, which is connected to a feed line only partially shown, and with the separation module according to 1a can be combined;

2 a highly simplified symbolic lateral representation of a versus the representation in 1a modified food arrangement;

3 a highly simplified symbolic side view of another food arrangement, compared to the representation in 2 modified;

4 a highly simplified symbolic side view of a supply system with another compared to the representation in 2 modified food arrangement; and

5 another highly simplified symbolic side view of a supply system with a further modified supply arrangement, which has a separation module and an expansion module.

In 1a is a supply system for a heating system simplified and overall with 10 designated. 1b shows a corresponding view of an expansion module 52 , which in an expanded configuration is modular in the food arrangement 10 can be integrated.

The food arrangement 10 is input side with a supply line 12 connected, which may be about part of a drinking water system of a building. One with 14 designated arrow indicates a flow direction of the water. A movement in the direction of the arrow 14 can be understood as downstream movement. The food arrangement 10 is in the range of an entrance 17 via a connector 16 with the supply line 12 coupled. The connector 16 can also be referred to as a fitting. The connector 16 is exemplified as a screw connection. It may be at the connector 16 but also about other compounds, such as adhesive joints, solder joints, welded joints, clamp joints or the like, which are sealed in a suitable manner.

The food arrangement 10 can advantageously a plurality of check valves 18 . 20 . 22 exhibit. By means of the shut-off valves 18 . 20 . 22 can the food arrangement 10 shut off or be sealed off sectionally. In this way, about maintenance operations, assembly operations or the like can be simplified. The check valves 18 . 20 . 22 may usually be configured to provide a defined open position and a defined closed position. Im in 1a the embodiment shown, the check valve 18 as an input-side shut-off valve, the check valve 20 as output-side shut-off valve and the check valve 22 be referred to as a central shut-off valve.

Downstream of the output side shut-off valve 20 has the food arrangement 10 an exit 23 on, about with a thread 24 can be provided to be connected to other components (such as a feeder or an expansion module). One with 26 designated arrow describes a desired flow direction of feed water to be supplied to a heating system about.

Along one of the arrow 14 towards the arrow 26 extending flow path, the food arrangement 10 a separator 30 have, for example, can be referred to as a system separator or pipe separator. The separator 30 is primarily designed to a water flow against the flow path, that is approximately opposite to the arrow 14 to stop. In this way, the penetration of water from the heating system in the drinking water system should be reliably prevented. Exemplary designs of the separator 30 can the 2 . 3 and 5 be removed. The separator 30 can be a pressure-controlled drain 32 exhibit. The pressure-controlled drain 32 can be about when an upstream form, in front of the separator 30 abuts excessively, a defined discharge of water from the separator 30 cause. In this way, for example, a "suck back" of water from the heating system or the separator 30 at an emptying of the supply line 12 be prevented.

The food arrangement 10 also has a flush valve 34 on, for example, about upstream of the separator 30 can be provided in the conduction path. The flush valve 34 has a drain opening 38 on, for example, by means of a purge valve 36 can be opened or closed in a controlled manner. At the in 1a shown embodiment is a possible opening and closing of the valves 18 . 20 . 22 and 36 each indicated by a double arrow. The flush valve 34 or the purge valve 36 may be actuated from time to time to backwater or stagnant water, located upstream of the separator 30 accumulates, drain. In this way, the risk of contamination or contamination of water in the drinking water system by "stale" water of the food arrangement 10 be prevented.

As mentioned above, heating systems are regularly filled with drinking water. When connecting the heating system and the drinking water system to fill the heating system, care must be taken that no return of water from the heating system into the drinking water system can take place. This is done regularly by installing a separator 30 (Pipe separator or system separator) accomplished. In addition, however, the fact must be taken into account that the filling of the heating system takes place at best only sporadically. Thus, there is the danger of unwanted water stagnation or water stagnation on the input side of the feed arrangement 10 , This danger can be caused by regular opening of the flushing valve 34 be countered.

The drain hole 38 the flushing valve 34 can be a process 40 be assigned, can be discharged or disposed of the leaking rinse water. The sequence 40 may also be the pressure-controlled drain 32 the separator 30 be assigned. In 1a is the process 40 exemplified as free run out. A free spout can be a backflow of sewage into the food arrangement 10 prevent. The discharged stagnant water can be fed to a disposal line, such as a sewer, compare one with 42 designated arrow.

In the 1a illustrated components, in particular the separator 30 as well as the flush valve 34 can be about in a separation module 44 be summarized. The separation module 44 may be designed as a structural unit and introduced in a modular manner in a conduction path.

The food arrangement 10 may further include a pressure regulator 46 have, which can be designed in particular as a pressure reducer. The pressure regulator 46 may be downstream of the separator 30 in the food arrangement 10 or in the separation module 44 be provided. It is also conceivable the pressure regulator 46 in the separator 30 to integrate. The pressure regulator 46 can cause excessive pressure increase at the outlet 23 the food arrangement 10 which would also affect a downstream heating system. In this way, damage to the heating system can be avoided by excessive load. The pressure regulator 46 can also use a pressure gauge 48 be provided to indicate an actual pressure at the output 23 the food arrangement 10 is applied. It is understood that the pressure regulator 46 even without the pressure gauge 48 can be designed. Heating systems, for example, already regularly have integrated pressure measuring devices.

1b illustrates an expansion module 52 that with the separation module 44 as shown in 1a can be coupled and together with the separation module 44 Part of the food arrangement 10 can be. The expansion module 52 can be about downstream of the separation module 44 be provided in the flow path, compare the arrows 26 and 26 ' in the 1a and 1b , The expansion module 52 may comprise a housing, which via an input-side connector 54 with the separation module 44 like the thread 24 , is connectable.

The expansion module 52 can be configured to provide extended functionality for the food arrangement 10 provide. For this purpose, the expansion module 52 such as a control device 56 have, in the at least one control unit 58 is provided. The control unit 58 may be configured to process data by at least one detection device 60 be recorded. By way of example, for this purpose in the food arrangement 10 a detection device 60a be provided, which is a clock or time recording device 62 provides. Alternatively or additionally, in the food arrangement 10 a detection device 60b be provided, which is about a flow meter 64 having.

The detection devices 60a and 60b can be modular in the control device 56 be integrated. The through the detection devices 60a . 60b captured data can be sent to the controller 58 be supplied. The control unit 58 can evaluate the data supplied and via a control line 66 the flush valve 34 to trigger a flushing process. It is understood that it is advantageous in this context, the flush valve 34 with a flush valve 36 to be provided, which can be actuated for example by means of an actuator. Such a flush valve 34 will be around in the 3 and 5 shown. The control device 56 can also be a supply line 68 have, for example, can be coupled to a pipeline network for the provision of electrical energy. The control device 56 Alternatively, it can also be configured as a self-sufficient control device and can be equipped with an energy store (in 1b not shown).

The expansion module 52 may also be provided with other fittings or attachments. So it is conceivable to be a demineralizer 70 to integrate into the flow path. The demineralizer 70 can be a demineralizer cartridge 72 include. The demineralizer 70 may be configured to demineralize or demineralize by-passing water. In this way minerals can be removed from the water. This can have an advantageous effect on the operation and the life of the heating system. The Entmineralisierpatrone 72 may include a so-called ion exchanger.

Alternatively or additionally, the expansion module 52 a filtration device 74 to filter out solids from the passing water. The filtration device 74 on the one hand similar to the demineralizer 70 serve to make excessive entry of substances contained in the water into the heating system 70 to avoid. Conversely, the filtration device 74 However, also be designed to prevent a transfer of deposits or the like from the heating system in the drinking water system. Thus, it is also conceivable to have a plurality of filtration devices 74 provided.

Analogous to in 1a shown separation module 44 can also use the expansion module 52 at least one check valve 75 exhibit. In the present case is the check valve 75 exemplarily at the downstream end of the expansion module 52 arranged. The expansion module 52 is via a connector 76 with a feed line 78 connected, which is associated with a heating system or at least connected to this. Along one with 80 designated arrow feed water can be supplied to the heating system.

2 illustrates by means of a highly simplified representation using symbol images an alternative feed arrangement 10a that basically the in 1a shown feeding device 10 may be similar. The arrows 14 and 26 describe a direction of flow of the water in the way of the drinking water system in the heating system. The water can be at the entrance 17 in the food arrangement 10a enter and exit 23 the food arrangement 10a leave.

The food arrangement 10a has a separator 30 on that in 2 is exemplified by an equivalent circuit surrounded by a dashed rectangle. An area that extends approximately between an input-side shut-off valve 18 (or the entrance 17 general) and an input-side backflow preventer 82 the separator 30 extends, can be about as a pre-pressure chamber 81 be designated. An area that extends between the input side backflow preventer 82 and an output side backflow preventer 84 the separator 30 extends, as a medium-pressure chamber 83 be designated. In the present case are the admission pressure chamber 81 and the medium pressure chamber 83 indicated by dashed rectangles.

The design of the separator 30 with two backflow preventers connected in series 82 . 84 can the risk of backflow of water against the flow direction (arrows 14 . 26 ) decrease significantly. The backflow preventers 82 . 84 can be designed as basically spring-loaded valves. In this way, a bias can be generated, which the backflow preventer 82 . 84 keeps closed, if there is no pressure difference on the input side and output side. The backflow preventers 82 . 84 can be traversed in the desired flow direction when the input side, a certain pressure applied, which can overcome the defined bias. On the output side applied overpressure, in contrast, acts in addition to the bias to a closed position of the backflow preventer 82 and 84 ,

The separator 30 can also be a pressure-controlled valve 86 have (compare the pressure-controlled drain 32 in 1a ). The pressure-controlled valve 86 For example, it may be configured to respond to a request for a certain overpressure in the medium-pressure chamber 83 open to the medium pressure chamber 83 to empty. This may be, for example, an absolute pressure, but alternatively also about a differential pressure between the admission pressure chamber 81 and the medium pressure chamber 83 act. So can the pressure-controlled valve 86 for example by means of a connecting line 88 coupled to the pre-pressure chamber, the in the pre-pressure chamber 81 prevailing pressure as a control pressure at the pressure-controlled valve 86 provides. Thus, for example, a diaphragm or a similar actuator can be actuated pressure-dependent to the pressure-controlled valve 86 defined to open or close. In particular, when the pressure in the admission pressure chamber 81 can sink, can in the medium pressure chamber 83 a (relative) pressure prevail, by opening the pressure-controlled valve 86 can be reduced.

It is understood that the separator 30 fundamentally different from the in 2 can be executed embodiment shown. So it is conceivable, the separator 30 only with a backflow preventer 82 equip. It is also conceivable in principle, in the separator 30 on the pressure-controlled valve 86 for selective emptying of the medium pressure chamber 83 to renounce.

The flush valve 34 with the purge valve 36 can be via a flushing channel 90 with the admission pressure chamber 81 be connected. Thus, by selectively opening or closing the flush valve 34 in the pre-pressure chamber 81 Dammed water to be drained. The backwater or stagnation water can through the drain opening 38 a drain line 92 a process 40 be supplied. The drain line 92 can also work with the pressure-controlled valve 86 be coupled to this leaking water dissipate. The discharged water can be supplied to a disposal system, compare the arrow 42 , The drain line 92 can be a pipe breaker, about a check valve 94 be assigned. In this way, a return of wastewater into the food arrangement 10a be even more effectively prevented.

3 shows a further design of a food arrangement 10b , which in principle at the in 2 illustrated design of the food arrangement 10a is oriented. In particular, the separating device 30 in a similar or similar way as already in connection with 2 be designed described.

The food arrangement 10b has a flush valve 34a on, which is a motor operated flush valve 36a includes. The flush valve 36a can in principle be designed as a solenoid valve, as an electric motor operated valve, as a pneumatically operated valve or similar. The flush valve 34a can be advantageous about with a control device 56 (see 1b ) to be driven by them. In this way, the flushing process can be automated without manual intervention. In the 3 illustrated embodiment further includes, by way of example, a split (or split) flushing channel 90a . 90b on. The flushing channel 90a is upstream of the system separator 30 or upstream of the input side non-return valve 82 coupled with the flow path. Exemplary, the flushing channel 90a with the admission pressure chamber 81 (see 2 ). The flushing channel 90b is coupled in an area with the flow path extending between the inlet side non-return valve 82 and the output side backflow preventer 84 the separator 30 extends. This may be, in particular, the medium-pressure chamber 83 ( 2 ) act. Thus, both in front of the system separator 30 as well as in the system separator 30 Dammed water to be drained. The food arrangement 10b can be rinsed more effectively.

4 illustrates by means of simplified symbolic representation of a configuration of a supply system 96 that with a food arrangement 10c is provided. On the input side (see arrow 14 ) is the supply system 96 about with a supply line 98 coupled. It can become a gate valve 100 connect, disconnecting or connecting the supply line 98 with a house installation 102 can accomplish. The house installation 102 is simplified indicated by a trimmed rectangle (black box). The house installation 102 may in particular include a drinking water supply system with drinking water pipes. The food arrangement 10c can with the house installation 102 be coupled.

The food arrangement 10c has a separator 30 on that in 4 in its entirety is represented by a symbol representation. The food arrangement 10c is also with a flush valve 34 provided, which is about the Spülarmatur 34 according to 2 can correspond. The flush valve 34 is over the flushing channel 90 with a sink 104 connected to the upstream of the separator 30 is provided in the flow path. In the valley 104 can accumulate dammed water to open the flush valve 34 to be drained purposefully.

The flush valve 34 is by means of a drain line 92a with a (free) spout 106 connectable. Likewise, a pressure-controlled drain can also be used 32 the separator 30 with the spout 106 be connectable. The free outlet 106 Ensures that no wastewater is returned to the separator 30 can flow. To the free outlet 106 closes a process 40 at.

On the output side is the food arrangement 10c via the feed line 78 with a heating system 108 connected. The heating system 108 can with the food arrangement 10c be fed, so about filled or refilled. The heating system 108 exemplifies a burner 110 This may be, for example, a gas burner, an oil burner, but also a solid fuel burner. The burner 110 can water in a kettle 112 heat. The kettle 112 can serve as a water reservoir. It can be at least one heating circuit 114 which the heated water can flow through to release thermal energy and as cold water into the boiler 112 zuräckzuströmen. By way of example, the heating circuit 114 two radiators 116 on. About the radiators 116 Heat can be released to the environment.

It is understood that the heating system 108 may have a variety of alternative configurations. By way of example, the heating system 108 also be provided with heat exchangers, for example, to indirectly heat water. It is further understood that a plurality of heating circuits 114 with a varying number of radiators 116 can be provided. Usually, it is in the heating circuit 114 a closed system in which only a very small amount of water is lost in normal operation. A pressure drop in the heating circuit 114 can be noticeable by a lack of heat output. A pressure drop can occur with the inflow of air into the heating circuit 114 accompanied. Air in the heating circuit 114 can increase the efficiency of the heating system 108 reduce and require increased use of fuel. With the food arrangement 10c can the heating system 108 replenished to provide a required level of pressure.

5 illustrates a supply system 96a in a highly simplified symbolic representation. The supply system 96a can be analogous to the supply system 96 according to 4 with a house installation 102 and a heating system 108 be linked.

The supply system 96a also has a food arrangement 10d on. The food arrangement 10d is executed modular. The food arrangement 10d has a separation module 44 and an expansion module 52 up, compare 1a and 1b , Conceivable module boundaries are each illustrated by dashed rectangles. The separation module 44 can the separator 30 , suitably positioned check valves 18 and 20 and a flush valve 34b exhibit. This flush valve 34b is upstream of the separator 30 linked to the flow path. The flush valve 34b exemplifies a purge valve 36b in the form of a solenoid valve. In a known manner, the flush valve 34b with a drain line 92 coupled, which leads to a disposal system, see the arrow 42 , The drain line 92 can with a check valve 94 be provided.

The expansion module 52 can be analogous to the in 1b shown embodiment with a control device 56 Be provided with a control unit 58 having. The expansion module 52 can also be about a timekeeper 62 as well as a throughput detector 64 exhibit. Captured data can be sent to the controller 58 be supplied. The control device 56 can also be via a control line 66 with the flush valve 34b be coupled to the purge valve 36b selectively open or close. In this way, depending on different sizes, a flushing process can be triggered.

The rinsing process can take place approximately periodically. For this purpose, it would be sufficient in principle, the control device 56 only with time recording 62 to combine. Alternatively or additionally, however, by means of the flow detection 64 an actual throughput of water through the separator 30 be determined. Thus, it can be about when in the heating system 108 transferred amount of water in a certain period of time is considered to be sufficient, apart from a rinsing process. Also with a purge valve designed as a solenoid valve 36b equipped flush valve 34b Additionally or alternatively, it may also be manually opened or closed by an operator. For this purpose, switches can be provided in a suitable manner, which advantageously not necessarily directly at the flushing valve 34b must be arranged.

As basically already related to 1b set out, the expansion module 52 further a filtration device 74 , a demineralizer 70 (in 5 not shown) and similar devices. In addition, the expansion module 52 at least one check valve 75 include. In the separation module 44 can also be a pressure regulator 46 be provided.

QUOTES INCLUDE IN THE DESCRIPTION

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Cited patent literature

• DE 102007030654 A1 [0002]

Claims (15)

Feeding arrangement for heating installations, with a separating device ( 30 ), which at least one backflow preventer ( 82 . 84 ), in particular one with an input ( 17 ) associated input-side backflow preventer ( 82 ) and one with an output ( 23 ) associated exit-side non-return valves ( 84 ), the input ( 17 ) with a supply line ( 12 ), in particular a drinking water line, the output ( 23 ) with a heating system ( 108 ), in particular a feed line ( 78 ), for filling and / or make-up is connectable, and with a selectively actuable flushing valve ( 34 ), which allows a controlled flow of dammed up stagnation water. Food arrangement ( 10 ) according to claim 1, wherein the flushing armature ( 34 ) upstream of the input side backflow preventer ( 82 ) is arranged. Food arrangement ( 10 ) according to claim 1, wherein the flushing armature ( 34 ) between the input side backflow preventer ( 82 ) and the output side backflow preventer ( 84 ) is arranged. Food arrangement ( 10 ) according to one of the preceding claims, wherein the flushing valve ( 34 ) a mechanical valve ( 36 ) for draining stagnant water coupled to a handle. Food arrangement ( 10 ) according to one of the preceding claims, wherein the flushing valve ( 34 ) a valve ( 36a ; 36b ) for discharging stagnant water, which is controllable with an actuator, in particular a solenoid valve. Food arrangement ( 10 ) according to claim 5, further comprising a control device ( 56 ), which is adapted to the valve ( 36a ; 36b ) of the flushing valve ( 34 ) to selectively open to allow controlled drainage of stagnant water. Food arrangement ( 10 ) according to claim 6, further comprising at least one detection device ( 60 ) connected to the control device ( 56 ), wherein the at least one detection device ( 60 ) is designed for time recording and / or for detecting a flow rate. Food arrangement ( 10 ) according to one of the preceding claims, wherein the flushing valve ( 34 ) by means of a free outlet ( 106 ) and / or a pipe breaker ( 94 ) with a sequence ( 40 ) can be coupled for Stagnationswasser. Food arrangement ( 10 ) according to one of the preceding claims, wherein the flushing valve ( 34 ) with at least one flushing channel ( 90 ), which is in a sink ( 104 ) an antechamber ( 81 ) or middle chamber ( 83 ) of the food arrangement ( 10 ) is arranged. Food arrangement ( 10 ) according to one of the preceding claims, further comprising a filtration device ( 74 ) for filtering water, wherein the filtration device is preferably downstream of the outlet side return valve ( 84 ) is arranged. Food arrangement ( 10 ) according to any one of the preceding claims, further comprising a pressure regulator ( 46 ), in particular a pressure reducer, which preferably downstream of the outlet-side non-return valve ( 84 ) is arranged. Food arrangement ( 10 ) according to any one of the preceding claims, further comprising a demineralizer ( 70 ), which preferably downstream of the outlet-side non-return valve ( 84 ) is arranged. Food arrangement ( 10 ) according to one of the preceding claims, with a separation module ( 118 ), which at least the input-side backflow preventer ( 82 ) and the output-side non-return valve ( 84 ), preferably also the flushing armature ( 34 ) on the separation module ( 118 ) arranged. Food arrangement ( 10 ) according to claim 13, further comprising at least one expansion module ( 120 ) connected to the separation module ( 118 ) and in particular the downstream of the separation module ( 118 ), wherein the expansion module ( 120 ) accommodates at least one of the following components: the control device ( 56 ), the filtration device ( 74 ) comprising at least one detection device ( 60 ), the pressure regulator ( 46 ), and / or the demineralizer ( 70 ). Supply system ( 96 ), with a heating system ( 108 ) with at least one heating circuit ( 114 ), and with a food arrangement ( 10 ) according to any one of the preceding claims.

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