EP3495745B1 - Régulateur de pression différentielle auto-régulant pour un système d' eau potable et système d'eau potable doté d'un tel régulateur de pression différentiel auto-régulant - Google Patents

Régulateur de pression différentielle auto-régulant pour un système d' eau potable et système d'eau potable doté d'un tel régulateur de pression différentiel auto-régulant Download PDF

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Publication number
EP3495745B1
EP3495745B1 EP18209184.3A EP18209184A EP3495745B1 EP 3495745 B1 EP3495745 B1 EP 3495745B1 EP 18209184 A EP18209184 A EP 18209184A EP 3495745 B1 EP3495745 B1 EP 3495745B1
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EP
European Patent Office
Prior art keywords
differential pressure
self
regulating
pressure regulator
wake
Prior art date
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EP18209184.3A
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German (de)
English (en)
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EP3495745A1 (fr
EP3495745B8 (fr
Inventor
Robin Diekman
Thomas Spöler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gebr Kemper GmbH and Co KG
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Gebr Kemper GmbH and Co KG
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Publication of EP3495745B1 publication Critical patent/EP3495745B1/fr
Publication of EP3495745B8 publication Critical patent/EP3495745B8/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/02—Fluid distribution means
    • F24D2220/0264—Hydraulic balancing valves

Definitions

  • the present invention relates to a self-regulating and dead space-free differential pressure regulator for a drinking water system and a drinking water system with such a differential pressure regulator.
  • Drinking water systems are known in the art and can be used in single-family homes or large buildings with several apartments, in administrative buildings, industrial buildings, hospitals, etc. be installed. Stagnation of water in the system has been shown to be detrimental to drinking water quality. Therefore, the known drinking water systems often have a circulation pump and at least one circulation line in which the drinking water circulates. The hydraulic balancing of such drinking water systems is often difficult. Large circulation networks require high volume flows and a high differential pressure from the pump in order to overcome the pipe resistance. The most common problem in these networks is that regulating valves in lines close to the pump cannot reduce the differential pressure without a significant increase in volume flow. The valve can only be closed up to a minimum Kv value.
  • One object of the present invention is therefore to improve the hydraulic balancing in a drinking water system.
  • the drinking water system usually has a connection to a water supply, in particular to the public water supply network, and at least one water pipe for supplying at least one consumer.
  • the drinking water system also has a water heater and/or a heat exchanger that heats cold water from the water supply, at least one hot water pipe that carries the heated water to at least one consumer and at least one cold water pipe that supplies cold water from the water supply leads to at least one consumer.
  • the hot water pipe is usually assigned a circulation pipe that returns unused hot water to the heat heater or heat exchanger.
  • the cold water pipe can be assigned a circulation pipe. Cold and hot water pipes are usually laid in parallel and supply consumers such as sinks, showers or bathtubs with hot and cold drinking water.
  • Differential pressure regulators have so far only been used in connection with heating systems, for example from the DE 10 2011 107 273 A1 , the DE 38 29 783 A1 or the DE 100 84 851 B3 known. Part of the fluid flow is diverted to a movable element in front of and behind the valve seat of the differential pressure regulator. The diverted fluid flows act on the movable element from different sides, so that the deflection of the movable element indicates or corresponds to the differential pressure.
  • Such differential pressure regulators are unsuitable for use in a drinking water system because the diverting paths create dead spaces, which promote the formation of germs and cannot be tolerated in drinking water systems for hygienic reasons.
  • the EP 1 845 207 A1 discloses a ring line flushing fitting with a nozzle, the nozzle cross sections of which can be designed to be automatically adjustable by a control unit in order to achieve hydraulic balancing between individual ring lines or individual strands.
  • the EP 1 845 207 A1 can in this respect be viewed as generic prior art for the subject of claim 1.
  • the present invention simplifies the hydraulic balancing of a drinking water system.
  • the self-regulating differential pressure controller is self-regulating, i.e. it reacts independently to changing pressures in the drinking water system, which are caused, for example, by a different consumer load, and regulates itself in such a way that the differential pressure and thus the volume flow remain essentially constant.
  • the self-regulating differential pressure regulator is preferably provided in a circulation line. Since only small volume flows are usually conveyed in circulation lines, a Large control range of the self-regulating differential pressure controller can be achieved.
  • the difference in pressure before and after or after the self-regulating differential pressure regulator is usually referred to as differential pressure.
  • the drinking water system comprises at least two supply units, with at least one of the supply units being assigned the self-regulating differential pressure regulator.
  • a supply unit according to the present invention comprises at least one consumer and extends from a common main line.
  • the main line is usually with the water supply and/or a water heater or a heat exchanger.
  • the nominal diameter of the main line is usually between DN10 - DN200, preferably between DN15 - DN100, and more preferably between DN20 - DN100.
  • the supply unit can extend over several floors of a building and is therefore not limited to a single apartment or a single room with at least one wet room with at least one consumer.
  • a differential pressure controller can be assigned to each supply unit.
  • the supply units each have a supply line and a circulation line assigned to the supply line.
  • the nominal diameter of the circulation line is usually between DN10 - DN50, preferably between DN10 - DN32.
  • the supply line can carry warm, cold or mixed temperature water.
  • the self-regulating differential pressure regulator is preferably arranged at the end of the circulation line and regulates the return from the circulation line into a circulation manifold.
  • the nominal diameter of the circulation manifold is usually between DN 10 - DN200, preferably between DN12 - DN65.
  • the supply line is usually connected to the main line and communicates directly and/or via a feed line or feed lines with at least one consumer.
  • the nominal width of such supply lines is usually between DN10 - DN50, preferably between DN 10-DN 32.
  • the circulation line usually communicates with the supply line on the one hand and is connected to a circulation manifold on the other. In particular, the circulation line directs unused water (cold or warm) from the consumer(s) into the circulation collecting line, in which the water from the circulation lines collects.
  • the circulation manifold usually communicates with a circulation pump to which the collected water is returned and which pumps the returned water back into the main line. The returned water can, however, pass through a water heater or a heat exchanger before entering or after leaving the pump.
  • the self-regulating differential pressure regulator By arranging the self-regulating differential pressure regulator at the end of the circulation line, it can best detect the pressure changes or pressure fluctuations within a supply unit and thus respond optimally to them. The balancing of the differential pressure between supply units and the hydraulic balancing of the drinking water system as a whole can thereby be improved. In particular, there is no need for pre-throttling by a device assigned to the main line or supply line and an additional valve upstream of the self-regulating differential pressure regulator.
  • a circulation line generally has a diameter that is smaller than the supply line by at least a nominal diameter.
  • the supply units are arranged next to one another in the horizontal direction. At least one of the supply units extends across several floors, each with at least one consumer in a building.
  • the self-regulating differential pressure regulator is provided at one end of a circulation line that runs through several floors.
  • the self-regulating differential pressure regulator is usually provided at the lower end of the circulation line in the direction of gravity.
  • the self-regulating differential pressure regulator is arranged in the circulation line.
  • An arrangement according to which the water heater is provided on a floor other than the lowest floor is also conceivable.
  • the differential pressure regulator can also be arranged at the upper end of the circulation line in the direction of gravity and/or at the level of the water heater.
  • the drinking water system according to this preferred development is particularly suitable for larger objects with preferably essentially symmetrically constructed floors.
  • the supply line runs in a vertical direction.
  • the supply line preferably supplies several residential units arranged one above the other.
  • the circulation line according to this preferred development preferably has a diameter that is in a range between DN 12 to DN 32.
  • the circulation line usually has essentially the same vertical extent as the supply line.
  • the supply units in a building are arranged one above the other in the vertical direction.
  • the self-regulating differential pressure regulator is provided at one end of a circulation line extending on a single floor of the building.
  • the main line can extend over several floors both in the horizontal direction and in the vertical direction. The same usually applies to the circulation manifold.
  • the supply line usually only extends over a single floor of the building.
  • a drinking water system can also include supply units that are arranged horizontally next to one another and supply units that are arranged vertically one above the other.
  • the self-regulating differential pressure regulator is free of dead space.
  • a dead space is usually an area in which water stagnates, i.e. the water flow does not flow through it sufficiently.
  • the exchange of water is insufficient and the water stands up. This promotes germ formation.
  • the self-regulating differential pressure regulator according to the present invention provides a remedy for this and is therefore particularly suitable for use in a drinking water system.
  • the self-regulating differential pressure regulator has an element movable by water pressure, which is arranged in the fluid flow and is coupled to an adjusting device for adjusting a valve body.
  • the movable element is a membrane.
  • “movable” already means the possibility of deflection of a membrane attached or fixed at the end.
  • a movable element can also be a translationally and/or rotationally movable, in particular displaceable, rigid body, for example a piston element.
  • the movable element is usually made of a material suitable for use in drinking water, in particular an elastomer, which in particular meets the KTW guideline and/or DVGW W270.
  • Suitable materials for a membrane are, for example, NBR, EPDM, FKM, SBR, NR or CR.
  • the material thickness of such a membrane is usually between 0.1 - 6 mm, preferably between 0.5 - 3 mm.
  • the movable element is arranged in the fluid flow, i.e. usually in an area that is exposed to constant water exchange during regular operation of the drinking water system. As a rule, water from the fluid flow flows against both sides of the membrane, which is exposed to a constant exchange of water during regular operation of the drinking water system.
  • the adjusting device can include a spindle and/or a plunger which is connected to the valve body and, when the membrane is deflected in one direction, triggers an axial advance of the valve body in the direction of a valve seat.
  • a plate-like component or a shell can be provided on the membrane, which is connected to the adjusting device.
  • a plate-like component or a shell is provided on both sides of the membrane, at least one of which is connected to the adjusting device.
  • the arrangement of the movable element in the fluid flow does not create any dead spaces.
  • the water pressurizing the movable element is subject to constant exchange. In this way, germ formation due to standing water can be safely avoided.
  • By coupling the movable element with the adjusting device it is easy to ensure that the movable element regulates itself in the event of pressure fluctuations.
  • the self-regulating differential pressure regulator has two sections in the fluid flow of the drinking water that are separated from one another by the movable element.
  • the movable element represents a water-impermeable separation.
  • the sections just described are not completely physically separated from one another, but are fluidly connected to one another, in particular without dead space. The movable element can thus be subjected to water pressure from both sections.
  • the movable element is provided in a wall of the self-regulating differential pressure regulator that delimits the fluid flow.
  • the movable element is integrated into the wall delimiting the fluid flow in such a way that the movable element forms part of this wall.
  • one side of the movable element faces one of the two separate sections.
  • One side of the movable element is positioned in front of the other side in the direction of the fluid flow.
  • a diaphragm or a regulating valve body is usually arranged in the fluid flow between the two sides of the movable element.
  • the aperture defines a fixed resistance in the fluid flow of the drinking water, so that a different water pressure is created in front of and behind the aperture.
  • the deflection of the movable element is therefore a measure of the pressure drop across the orifice.
  • a regulating valve body is provided instead of the orifice.
  • the regulating valve body allows for interaction with a regulating valve seat an, for example manual or mechanically controlled, adjustment of the resistance. The adjustment is made via the relative position of the regulating valve body in relation to the regulating valve seat. With the help of the orifice or the regulating valve body in conjunction with the regulating valve seat, the volume flow can be regulated by the self-regulating differential pressure regulator.
  • the self-regulating differential pressure regulator has a device for presetting a target value of the differential pressure.
  • the device can be used to adjust the coupling strength of the membrane with the adjusting device or set it to a specific value.
  • the device usually includes a spring, so that the movable element is deflected against the spring force of the spring element. For example, by varying the spring strength, the target value of the differential pressure can be varied.
  • the self-regulating differential pressure regulator has a thermostatic element controlled by the water temperature.
  • the thermostatic element is usually assigned to the regulating valve body in such a way that a change in the temperature of the drinking water results in the regulating valve body being displaced.
  • a thermostatic element usually contains a so-called expansion element, the spatial expansion of which varies depending on the temperature within a certain temperature range.
  • the volume flow can be regulated depending on the temperature using the self-regulating differential pressure controller.
  • the thermostatic element can also be assigned to the device for presetting a target value of the differential pressure.
  • the thermostatic element usually interacts with the spring, so that the spring force against which the membrane is deflected varies depending on the temperature.
  • the spring itself can form the thermostatic element or can be formed from an expansion element.
  • the target value of the differential pressure can be regulated or set depending on the temperature.
  • the self-regulating differential pressure regulator preferably has two thermostatic elements, one thermostatic element being assigned to the adjusting device for adjusting the valve body and the other thermostatic element being assigned to the device for presetting the target value of the differential pressure.
  • the two thermostatic elements have a different temperature dependence. In this way, the overall control range of the self-regulating differential pressure controller can be increased.
  • the movable element is arranged in the differential pressure regulator in such a way that the flow influences on both sides of the membrane are essentially the same in order to balance each other out. As a rule, this is ensured by straight paths before and after the movable element.
  • the length of these straight paths is 10 times their inside diameter and particularly preferably 25 times their inside diameter.
  • the control range of the differential pressure regulator is usually between 5 l/h to 300 l/h with a differential pressure between 10 hPa to 1500 hPa.
  • the control range can be from 5 l/h to 800 l /h can be expanded, with a differential pressure of 10 hPa to 1500 hPa.
  • the differential pressure regulator has a bypass for bridging the valve seat that interacts with the valve body.
  • the bypass is usually designed as an opening in the wall upstream of the valve seat.
  • the thermostatic element assigned to the diaphragm is assigned a further valve body, with the further valve body closing the opening in the normal operating state. If there is a high temperature at the thermostatic element, the other valve body is pressed through the opening.
  • the differential pressure regulator is usually flushed sufficiently ( ⁇ 70°C). A small amount of fluid flows through the area of the differential pressure regulator through a minimally opened valve body of the orifice. This means that disinfecting temperatures are also achieved here.
  • Figure 1 shows a drinking water system with a connection 2 to the public water supply network, a main line 4 for hot water, a main line 6 for cold water and a supply unit 8 extending from these main lines 4, 6, which passes through four floors A, B, C, D.
  • the main line 4 for hot water is connected to a water heater 12, which is supplied with cold drinking water from the main line 6 for cold water.
  • the supply unit 8 has a supply line 14 for hot water and a supply line 16 for cold water.
  • the supply lines 14, 16 each extend from the corresponding main line and extend over the four floors.
  • the main lines 4, 6 are in the horizontal direction (on the right in the Figure 1 ) continued in order to supply further supply units 8 formed by four wet cells 17 lying one above the other with cold or hot water.
  • the hot water supply line 14 is connected on each floor to a hot water supply line 18A, 18B, 18C, 18D, which directs the warm water to the individual consumers 20.
  • the cold water supply line 16 is connected on each floor to a cold water supply line 22A, 22B, 22C, 22D, which leads cold water to the individual consumers 20.
  • the consumers 20 are a sink 20A1, a toilet 20A2, a shower 20A3, and a washbasin 20A4.
  • the toilet 20A2 is only connected to the supply line 22A for cold water.
  • a circulation line 24 is assigned to the hot water supply line 14.
  • the circulation line 24 is connected at one end on the top floor A to the hot water supply line 14 and at its other end, which is lower in the direction of gravity, is connected to a circulation manifold 26. Hot water is returned to the hot water supply line 14 via the circulation line 24 and the circulation manifold 26, which is connected to the water heater 12.
  • the drinking water system has a circuit for the hot water, so that the warm water constantly circulates in the drinking water system.
  • the circulation is kept going by a circulation pump 28 in the circulation manifold 26.
  • the circulation pump 28 has the flow Water heater 12 upstream.
  • a self-regulating differential pressure regulator 30 is arranged. This regulates the return of the hot water from the supply unit 8 into the circulation manifold 26.
  • Shut-off valves 32 are arranged in the supply lines 18, 22 and shut-off valves 34 are arranged in the supply lines 14, 16. These can be used to shut off the relevant line, for example during maintenance work.
  • FIG 2 In Figure 2 are components that are already in Figure 1 have been described, marked with the same reference numerals.
  • the main lines 4, 6 and the circulation manifold 26 extend in the drinking water system Figure 2 also in the vertical direction over the four floors, whereas the individual supply units 8A, 8B, 8C, 8D, each formed by a wet cell, only extend over a single floor.
  • the supply lines 14, 16 each extend over a single floor and supply the consumers 20 on a floor directly with hot or cold water.
  • a circulation line 24A, 24B, 24C, 24D is each assigned to the hot water supply lines 14A, 14B, 14C, 14D.
  • the arrangement of the circulation line 24 on the respective floor is described below using the top floor.
  • One end of the circulation line 24A is assigned to the last supplied consumer 20A4 in the direction of flow and is connected there to the hot water supply line 14A.
  • the circulation line 24A is connected to the circulation manifold 26.
  • a self-regulating differential pressure regulator 30 is arranged at the end of the circulation lines 24A, 24B, 24C, 24D, which open into the circulation manifold 26, a self-regulating differential pressure regulator 30 is arranged.
  • the hot water supply lines 14A, 14B, 14C, 14D each have sections of different nominal widths.
  • the section up to the first-supplied consumer 20A1 in the direction of flow has a larger nominal width than the section between the first-supplied consumer 20A1 and the consumer 20A3.
  • the nominal width of the section between the consumer 20A3 and the consumer 20A4 in turn has a smaller nominal width than the section between the consumer 20A1 and the consumer 20A3.
  • the circulation line 24A however, has
  • the Figure 3 shows a self-regulating differential pressure regulator 30 in a schematic representation.
  • the arrow P in this illustration represents the direction of flow of the water.
  • a Membrane 40 is arranged in a wall 42 of the self-regulating differential pressure regulator 30. It is exposed to water from both sides and can be deflected in the direction of both sides. With its walls 42, 44 and the membrane 40, the self-regulating differential pressure regulator 30 defines a substantially S-shaped path for the water flow.
  • the arrangement of the membrane 40 shown in the S-shaped flow path makes it possible for the membrane 40 to be subjected to water and its pressure on both sides.
  • the cross section is the Figure 3
  • the upward-facing top of the membrane 40 is located in front of the downward-facing underside in the direction of flow.
  • a regulating valve body 46 which cooperates with a regulating valve seat 48, is arranged in the fluid flow between the top and bottom of the membrane 40. Water that passes through the underside of the membrane 40 must first pass through the top of the membrane 40 and then flow through the regulating valve seat 48.
  • the regulating valve body 46 together with the regulating valve seat 48, represents a resistance to the water. The resistance can be changed by changing the relative position of the regulating valve body 46 to the regulating valve seat 48. In the present case, the change takes place in a self-regulating manner depending on the temperature by a thermostatic element 50, which is arranged in the water flow and coupled to the regulating valve body 46.
  • the membrane 40 is impermeable to water and made of a material suitable for drinking water systems.
  • the membrane 40 Due to the resistance that the regulating valve body 46 and the regulating valve seat 48 define, the membrane 40 is subjected to a different water pressure on its top and bottom sides. Since the membrane 40 can be moved by water pressure, the deflection of the membrane 40 represents a measure of the pressure drop across the regulating valve body 46 and the regulating valve seat 48.
  • the membrane 40 as a water-impermeable element, divides the differential pressure regulator 30 into two sections 33 and 35, whereby the in Figure 3 The section shown above the membrane 40 is marked with 33 and the in Figure 3 The section shown below the membrane 40 is marked with 35.
  • the membrane 40 is coupled to an adjusting device 52, which is connected to a valve body 54, which cooperates with a valve seat 56.
  • the adjusting device 52 is a plunger which is connected to the membrane 40.
  • the valve body 54 and the valve seat 56 are arranged in the S-shaped flow path below the membrane 40, in particular without lateral offset, with a part of the wall 44 being arranged between the membrane 40 and the valve body 54 or the valve seat 56.
  • the wall 44 is penetrated by the plunger 52.
  • An O-ring 58 seals the plunger 52 from the wall 44.
  • a spring 60 is a device for presetting a target value of the differential pressure is provided and supported against the wall 44.
  • valve body 54 and the valve seat 56 are downstream of the membrane 40 in terms of flow.
  • the individual components within the self-regulating differential pressure regulator can just as easily be arranged in such a way that the valve seat 56 and the valve body 54 are positioned upstream of the membrane 40 in terms of flow.
  • Figure 4 shows a self-regulating differential pressure regulator according to a further preferred embodiment. Same components compared to Figure 3 are marked with the same reference numerals.
  • the design according to Figure 4 differs from the one after Figure 3 in that the valve body 46, which cooperates with the expansion element 50, is extended by a further valve body 64.
  • the further valve body 64 closes in the in Figure 4 situation shown a bypass 62, which is designed as an opening in the wall upstream of the valve seat 56.
  • Figure 5 shows the self-regulating differential pressure regulator Figure 4 when the bypass 62 is open.
  • the expansion element 50 expands in such a way that the further valve body 64 - as in Figure 5 shown - is pushed through the opening and releases the bypass.
  • the further valve body 64 In the normal operating state ( ⁇ 70 ° C), the further valve body 64 completely closes the bypass 62, as in Figure 4 shown.

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  • Thermal Sciences (AREA)
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Claims (14)

  1. Régulateur de pression différentielle (30) à autorégulation et sans espace mort, destiné à un système d'eau potable et comprenant un dispositif de réglage (52), un corps de soupape (54) et un élément (40) mobile par pression d'eau, en particulier une membrane (40), agencé au sein de l'écoulement de fluide et couplé au dispositif de réglage (52) permettant de régler le corps de soupape (54).
  2. Régulateur de pression différentielle (30) à autorégulation et sans espace mort selon la revendication 1, caractérisé en ce que le régulateur de pression différentielle (30) à autorégulation et sans espace mort présente deux sections (33, 35) séparées l'une de l'autre par l'élément mobile (40) au sein de l'écoulement de fluide de l'eau potable.
  3. Régulateur de pression différentielle (30) à autorégulation et sans espace mort selon la revendication 1 ou 2, caractérisé en ce que l'élément mobile (40) est fourni dans une paroi (42) du régulateur de pression différentielle (30) à autorégulation et sans espace mort qui délimite l'écoulement de fluide et/ou forme une partie de ladite paroi (42).
  4. Régulateur de pression différentielle (30) à autorégulation et sans espace mort selon l'une quelconque des revendications 1 à 3, caractérisé par un dispositif (60) permettant de prérégler une valeur de consigne de la pression différentielle.
  5. Régulateur de pression différentielle (30) à autorégulation et sans espace mort selon l'une quelconque des revendications 1 à 4, caractérisé par un élément thermostatique (50) commandé par la température de l'eau.
  6. Régulateur de pression différentielle (30) à autorégulation et sans espace mort selon les revendications 4 et 5, caractérisé en ce qu'un second élément thermostatique est associé au dispositif (60) permettant de prérégler une valeur de consigne de la pression différentielle.
  7. Régulateur de pression différentielle (30) à autorégulation et sans espace mort selon la revendication 6, caractérisé en ce que les éléments thermostatiques présentent une dépendance différente à la température.
  8. Régulateur de pression différentielle (30) à autorégulation et sans espace mort selon l'une quelconque des revendications précédentes, caractérisé par une dérivation permettant de ponter un siège de soupape (56) coopérant avec le corps de soupape (54).
  9. Système d'eau potable, caractérisé par un régulateur de pression différentielle (30) autorégulateur et sans espace mort selon l'une quelconque des revendications 1 à 8.
  10. Système d'eau potable selon la revendication 9, caractérisé en ce que le système d'eau potable comprend au moins deux unités d'alimentation (8, 8A, 8B, 8C, 8D) partant d'une conduite principale (4, 6) commune, et en ce qu'au moins une des unités d'alimentation (8, 8A, 8B, 8C, 8D) est associée au régulateur de pression différentielle (30) autorégulateur et sans espace mort.
  11. Système d'eau potable selon la revendication 10, caractérisé en ce que les unités d'alimentation (8, 8A, 8B, 8C, 8D) présentent respectivement une conduite d'alimentation (14, 14A, 14B, 14C, 14D) et une conduite de circulation (24, 24A, 24B, 24C, 24D) associée à la conduite d'alimentation (14, 14A, 14B, 14C, 14D) et en ce que le régulateur de pression différentielle (30) autorégulateur et sans espace mort est agencé à l'extrémité de la conduite de circulation (24, 24A, 24B, 24C, 24D) et régule le retour de la conduite de circulation (24, 24A, 24B, 24C, 24D) dans une conduite de circulation collectrice (26).
  12. Système d'eau potable selon la revendication 11, caractérisé en ce que les unités d'alimentation (8) sont agencées les unes à côté des autres dans la direction horizontale, en ce qu'au moins une des unités d'alimentation (8) traverse plusieurs étages (A, B, C, D) présentant respectivement au moins un consommateur (20, 20A1, 20A2, 20A3, 20A4) au sein d'un bâtiment, et en ce que le régulateur de pression différentielle (30) autorégulateur et sans espace mort est fourni à une extrémité d'une conduite de circulation (24) traversant plusieurs étages (A, B, C, D).
  13. Système d'eau potable selon la revendication 11 ou 12, caractérisé en ce que les unités d'alimentation (8A, 8B, 8C, 8D) sont agencées les unes au-dessus des autres dans une direction verticale au sein d'un bâtiment et le régulateur de pression différentielle (30) à autorégulation et sans espace mort est fourni à une extrémité d'une conduite de circulation (24A, 24B, 24C, 24D) s'étendant dans un seul étage (A, B, C, D) du bâtiment.
  14. Système d'eau potable selon l'une quelconque des revendications 10 à 13, caractérisé en ce qu'un régulateur de pression différentielle (30) à autorégulation et sans espace mort est associé à plusieurs unités d'alimentation (8, 8A, 8B, 8C, 8D).
EP18209184.3A 2017-12-07 2018-11-29 Régulateur de pression différentielle auto-régulant pour un système d' eau potable et système d'eau potable doté d'un tel régulateur de pression différentiel auto-régulant Active EP3495745B8 (fr)

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DE202017006304.2U DE202017006304U1 (de) 2017-12-07 2017-12-07 Selbstregulierender Differenzdruckregler für ein Trinkwassersystem und Trinkwassersystem mit einem solchen selbstregulierenden Differenzdruckregler

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EP3495745A1 EP3495745A1 (fr) 2019-06-12
EP3495745B1 true EP3495745B1 (fr) 2024-03-06
EP3495745B8 EP3495745B8 (fr) 2024-05-01

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EP (1) EP3495745B8 (fr)
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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3829783A1 (de) 1987-12-18 1989-06-29 Oventrop Sohn Kg F W Strangregulierventil fuer heizungsanlagen
CN2382919Y (zh) * 1999-07-30 2000-06-14 北京天箭星机电技术有限公司 恒流量调节阀
US6935363B2 (en) * 2002-11-20 2005-08-30 Hydrogenics Corporation Pressure control system for low pressure operation
DE102006017807B4 (de) * 2006-04-13 2013-10-24 Gebr. Kemper Gmbh & Co. Kg Metallwerke Trinkwassersystem sowie Verfahren zum Betrieb eines solchen Systems
DE102011010840B4 (de) * 2011-02-10 2019-08-14 Oventrop Gmbh & Co. Kg Trink- oder Brauchwassersystem
DE102011107273A1 (de) 2011-07-15 2013-01-17 Robert Bosch Gmbh Regelventileinrichtung mit Differenzdruckregler
DE202015006366U1 (de) * 2015-09-07 2016-12-08 Gebr. Kemper Gmbh + Co. Kg Metallwerke Trink- und Brauchwasserversorgungseinrichtung eines Gebäudes und Regulierventil hierfür

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EP3495745A1 (fr) 2019-06-12
EP3495745B8 (fr) 2024-05-01
DK3495745T3 (da) 2024-04-22
DE202017006304U1 (de) 2019-03-08

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