EP0305813A1 - Open water heater - Google Patents

Open water heater Download PDF

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Publication number
EP0305813A1
EP0305813A1 EP88113382A EP88113382A EP0305813A1 EP 0305813 A1 EP0305813 A1 EP 0305813A1 EP 88113382 A EP88113382 A EP 88113382A EP 88113382 A EP88113382 A EP 88113382A EP 0305813 A1 EP0305813 A1 EP 0305813A1
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EP
European Patent Office
Prior art keywords
water
tank
valve
cold water
hot water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88113382A
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German (de)
French (fr)
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EP0305813B1 (en
Inventor
Reinhold Elflein
Rolf Kurz
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Forbach GmbH and Co KG
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Forbach GmbH and Co KG
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Priority to AT88113382T priority Critical patent/ATE81397T1/en
Publication of EP0305813A1 publication Critical patent/EP0305813A1/en
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    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
    • F24D3/1016—Tanks having a bladder
    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/188—Water-storage heaters with means for compensating water expansion

Definitions

  • the invention relates to an open water heater according to the preamble of claim 1.
  • the invention shows another way to reliably prevent the escape of expansion water in an open water heater during the heating process of the container contents.
  • the invention has for its object to provide a device for changing the container volume, through which the stability of the water container is not affected and which works independently of temperature.
  • the device for changing the water tank volume acts in such a way that a self-contained water-free chamber is created when the dispensing process is initiated and at the same time a corresponding volume-dependent amount of water is displaced from the water tank.
  • the chamber is withdrawn, and an appropriate water-free space is thus created for receiving the expansion water which arises during the heating process, inside the water container.
  • the water tank 1 with a provided with an electric heating device 2 water tank for a so-called open or unpressurized water heater, which consists of a tubular body 3 and each with a liquid-tight base and head plate 4 or 5.
  • the water tank 1 includes a cold water supply pipe 7 controlled by a solenoid valve 6, which is guided parallel to the outside of the water tank 1 and ends in the area below the base plate 4 at a valve and piston housing body 8 held therein and there at an inlet pipe socket 9 of the valve - And piston housing body 8 is connected.
  • a higher lying outlet pipe socket 10 is provided on the side opposite the inlet pipe socket 9, to which a continuation of the cold water inlet pipe 7 forming pipe elbow unit 7 'is connected.
  • the pipe elbow unit 7 ' is in the lower part of the water tank tube body 3 through the wall tight, with the cold water outlet 11 is aligned to the bottom of the water tank.
  • a hot water outlet pipe 12 is inserted, which serves to remove the heated water, which is pressed by the cold water entering the water tank below through the hot water outlet pipe 12 to a water tap, not shown.
  • the valve and piston housing body 8 contains a piston valve 13 in a guide piece 14 inserted there.
  • the piston valve 13 has a valve plate 15 which rests on the guide piece 14 in the rest or initial position of the piston valve 13 and is connected to the cold water inlet Storage space 16 keeps closed.
  • the piston of the piston valve 13, which is led out of the valve and piston housing body 8 above the base plate 4 of the water container 1, carries a mushroom-like cap 17 in this area. It is above the mushroom-like cap 17 and thus behind the base plate 4 inside the water container 1 a membrane-like sealing plate 18 stretched, the edge bead 19 is inserted in the recessed flange 20 of the base plate 4. Both plates 4, 18 are tightly connected to a flange 21 of the water tank tube body 3. In the area below the mushroom-like cap 17, a vent opening 22 is expediently introduced in the base plate 4.
  • the method of operation of the water heater described with a device for changing the water tank volume in order to avoid the escape or dripping of expansion water during the heating process is as follows:
  • the hot water tap not shown, at which the hot water outlet pipe 12 ends, is opened, the cold water inlet to the cold water inlet pipe 7 is released via the solenoid valve 6.
  • the then existing pressure of the cold water acts in the storage space 16 against the plate 15 of the piston valve 13.
  • the membrane-like sealing plate 18 stretched over the cap 17 is also inevitably raised and pushes or displaces a certain volume-dependent amount of water (about 4% of the water tank content) via the hot water outlet pipe 12 to the hot water tap.
  • a water-free chamber 23 is set up between the membrane-like sealing plate 18 and the base plate 14, the volume of which is approximately 4% of the water content of the water container 1.
  • the piston valve 13 in the valve and piston housing body 8 reached its end position, the cold water supply via the elbow unit 7 'to the water tank 1 is released.
  • 12 hot water is pressed to the tap due to the resulting cold water supply via the hot water outlet pipe.
  • the piston valve 13 with its attached cap 17 returns to its starting position according to FIG. 1.
  • the membrane-like sealing plate 18 inevitably follows the decline of the piston valve 13.
  • the water level in the water tank 1 lowers in accordance with the previously displaced volume, as a result of which a water-free space 24 in the water tank 1 above corresponds to the volume of the chamber 23 adjusts which can then take up the expansion water which arises when the contents of the water tank are heated up, as a result of which water drips from the hot water tap is avoided.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Details Of Fluid Heaters (AREA)
  • Cookers (AREA)
  • Apparatus For Making Beverages (AREA)
  • Central Heating Systems (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Abstract

A hot water heater includes a water tank defining a tank space for accommodating water; a cold water inlet and a hot water outlet connected to the tank; a hot water tap in the hot water outlet for controlling flow of hot water from the water tank; a cold water valve in the cold water inlet for controlling flow of cold water into the water tank; and a volume altering device for changing the tank space. The volume altering device comprises an expandable and collapsible chamber situated in the tank space and defining a chamber space hermetically separated from the tank space; and a volume varying arrangement connected to the chamber and exposed to pressure of inflowing cold water for increasing the chamber space by a predetermined volume while correspondingly reducing the tank space when the hot water tap and the cold water valve are open and for reducing the chamber space by the predetermined volume while correspondingly increasing the tank space subsequent to closing the hot water tap and the cold water valve to obtain a water-free space having the predetermined volume and forming part of the tank space.

Description

Die Erfindung betrifft einen offenen Warmwasserbereiter nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an open water heater according to the preamble of claim 1.

Bekanntlich tritt bei allen Arten von Warmwasserbereitern, bei denen das zu erwärmende Wasser in einem Behälter gespeichert und aufgeheizt wird, während der Aufheizdauer eine Wärmeausdehnung des Wassers auf. Dies macht in einem geschlossenen Behälter zur Vermeidung eines schädlichen Durckanstiegs einen Volumenausgleich erforderlich. Im Falle eines sogenannten offenen Warmwasserbereiters, wie eines Waschtischspeichers, Boilers oder ähnlicher Heißwasserbereitungsgeräte, bei dem der Warmwasserauslauf als mit einer Verbraucherzapfstelle verbundener Überlauf ausgebildet ist, durch den das aufgeheizte Wasser beim Öffnen der Verbraucherzapfstelle durch das am Kaltwasserzulauf nachfließende Kaltwasser hinausgedrückt wird, erfolgt dieser Volumenausgleich einfach dadurch, daß das Ausdehnungswasser tropfenweise an der Verbraucherzapfstelle austritt. Dieser Wasseraustritt im Bereich bzw. Zugriff der Bedienungsperson während des Aufheizvorganges des Behälterwassers wird von manchen Abnehmerkreisen als Nachteil bzw. Mangel angesehen, so daß solche Warmwasserbereiter nicht überall absetzbar sind.As is known, in all types of water heaters in which the water to be heated is stored in a container and heated, thermal expansion of the water occurs during the heating-up period. This requires volume compensation in a closed container to avoid a harmful increase in pressure. In the case of a so-called open water heater, such as a wash basin store, boiler or similar hot water preparation device, in which the hot water outlet is designed as an overflow connected to a consumer tap, through which the heated water is pressed out when the consumer tap is opened by the cold water flowing in at the cold water inlet, this volume compensation takes place simply by the fact that the expansion water emerges dropwise at the consumer tap. This leakage of water in the area or access of the operator during the heating process of the container water is viewed by some customer groups as a disadvantage or deficiency, so that such water heaters cannot be sold everywhere.

Um diesen Mangel bzw. Nachteil zu begegnen, ist es bereits bekannt, den Wasserbehälter von offenen Warmwasserbereitern mit einer Einrichtung zum Volumenausgleich auszurüsten, durch die beim Aufheizvorgang des Wassers ein Austreten des Ausdehnungswassers vermieden wird. Solche Einrichtungen sind Gegenstand der DE-PS 30 40 450. Sämtliche dieser Einrichtungen bestehen aus einem den Wasserbehälter zugeordneten temperaturabhängigen Stellglied, durch das das Volumen des Wasserbehälters entsprechend der temperaturbedingten Volumenänderung des aufgeheizten Wassers verändert bzw. eingestellt wird.In order to counter this deficiency or disadvantage, it is already known to equip the water tank of open water heaters with a device for volume compensation, by means of which the expansion water is prevented from escaping when the water is heated up. Such devices are the subject of DE-PS 30 40 450. All of these devices consist of a temperature-dependent actuator assigned to the water tank, through which the volume of the water tank is changed or adjusted according to the temperature-related volume change of the heated water.

Demgegenüber zeigt die Erfindung einen anderen Weg auf, um bei einem offenen Warmwasserbereiter während des Aufheizvorganges des Behälterinhaltes ein Austreten von Ausdehnungswasser zuverlässig zu unterbinden. Der Erfindung liegt dabei die Aufgabe zugrunde, eine Einrichtung zum Verändern des Behältervolumens zu schaffen, durch die die Stabilität des Wasserbehälters nicht beeinflußt wird und die temperaturunabhängig arbeitet.In contrast, the invention shows another way to reliably prevent the escape of expansion water in an open water heater during the heating process of the container contents. The invention has for its object to provide a device for changing the container volume, through which the stability of the water container is not affected and which works independently of temperature.

Die Lösung dieser Aufgabe gemäß der Erfindung ist dem kennzeichnenden Teil des Patentanspruchs 1 zu entnehmen. Vorteilhafte weitere Ausgestaltungen des Gegenstandes der Erfindung sind in den Unteransprüchen angegeben.The solution to this problem according to the invention can be found in the characterizing part of patent claim 1. Advantageous further developments of the subject matter of the invention are specified in the subclaims.

Bei dem offenen Warmwasserbereiter nach der Erfindung wirkt die Einrichtung zum Verändern des Wasserbehältervolumenes in der Weise, daß mit Einleiten des Zapfvorganges eine in sich geschlossene wasserfreie Kammer geschaffen und gleichzeitig eine entsprechende volumenabhängige Wassermenge aus dem Wasserbehälter verdrängt wird. Nach Beendigung des Zapfvorganges wird die Kammer zurückgenommen, und somit ein entsprechender wasserfreier Raum zur Aufnahme des beim Aufheizungsvorgang entstehenden Ausdehnungswassers im Innern des Wasserbehälters angelegt. Diese Methode zur Bildung eines Raumes zur Aufnahme von Ausdehungswasser innerhalb des Wasserbehälters hat den Vorteil, daß die Wandung des Wasserbehälters selbst keinerlei Druckwechselbeanspruchungen unterworfen ist und deshalb diese Einrichtung auch für aus Kunststoff bestehende Wasserbehälter mit Vorteil einsetzbar ist.In the open water heater according to the invention, the device for changing the water tank volume acts in such a way that a self-contained water-free chamber is created when the dispensing process is initiated and at the same time a corresponding volume-dependent amount of water is displaced from the water tank. After the dispensing process has ended, the chamber is withdrawn, and an appropriate water-free space is thus created for receiving the expansion water which arises during the heating process, inside the water container. This method of forming a space for receiving expansion water within the water tank has the advantage that the wall of the water tank itself is not subjected to any pressure fluctuations and therefore this device can also be used advantageously for water tanks made of plastic.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird anhand dieser nachfolgend näher beschrieben:An embodiment of the invention is shown in the drawing and is described in more detail below with reference to this:

Es zeigen:

  • Fig. 1 einen beheizten Warmwasserbehälter für einen offenen bzw. drucklosen Warmwasserbereiter mit einer Einrichtung zum Verändern des Wasserbehälterinhaltes in Ruhe- bzw. Ausgangsstellung,
  • Fig. 2 den Wasserbehälter mit dieser Einrichtung in Funktionsstellung.
Show it:
  • 1 is a heated hot water tank for an open or unpressurized water heater with a device for changing the water tank content in the rest or starting position,
  • Fig. 2 shows the water tank with this device in the functional position.

Mit 1 ist ein mit einer elektrischen Heizeinrichtung 2 versehener Wasserbehälter für einen sogenannten offenen bzw. drucklosen Warmwasserbereiter bezeichnet, der aus einem Rohrkörper 3 und je einer mit diesem flüssigkeitsdicht verbundenen Boden- und Kopfplatte 4 bzw. 5 besteht. Zum Wasserbehälter 1 gehört ein von einem Magnetventil 6 beherrschtes Kaltwasserzulaufrohr 7, das außerhalb des Wasserbehälters 1 parallel zu diesem entlang geführt ist und im Bereich unterhalb der Bodenplatte 4 an einem in dieser gehalterten Ventil- und Kolbengehäusekörper 8 endet und dort an einem Eingangsrohrstutzen 9 des Ventil- und Kolbengehäusekörpers 8 angeschlossen ist. Am Ventil- und Kolbengehäusekörper 8 ist an der dem Eingangsrohrstutzen 9 gegenüberliegenden Seite ein höher liegender Ausgangsrohrstutzen 10 vorgesehen, an dem eine eine Fortsetzung des Kaltwasserzulaufrohres 7 bildende Rohrkrümmereinheit 7′ angeschlossen ist. Die Rohrkrümmereinheit 7′ ist im unteren Teil des Wasserbehälter-Rohrkörpers 3 durch dessen Wandung dicht hindurchgeführt, wobei deren Kaltwasseraustritt 11 zum Bodenbereich des Wasserbehälters hin ausgerichtet ist. In der Kopfplatte 5 des Wasserbehälter-Rohrkörpers 3 ist ein Warmwasserauslaufrohr 12 eingelassen, welches der Entnahme des aufgeheizten Wassers dient, das durch das unten in den Wasserbehälter eintretende kalte Wasser über das Warmwasserauslaufrohr 12 zu einer nicht dargestellten Wasserzapfstelle gedrückt wird.1 with a provided with an electric heating device 2 water tank for a so-called open or unpressurized water heater, which consists of a tubular body 3 and each with a liquid-tight base and head plate 4 or 5. The water tank 1 includes a cold water supply pipe 7 controlled by a solenoid valve 6, which is guided parallel to the outside of the water tank 1 and ends in the area below the base plate 4 at a valve and piston housing body 8 held therein and there at an inlet pipe socket 9 of the valve - And piston housing body 8 is connected. On the valve and piston housing body 8 a higher lying outlet pipe socket 10 is provided on the side opposite the inlet pipe socket 9, to which a continuation of the cold water inlet pipe 7 forming pipe elbow unit 7 'is connected. The pipe elbow unit 7 'is in the lower part of the water tank tube body 3 through the wall tight, with the cold water outlet 11 is aligned to the bottom of the water tank. In the top plate 5 of the water tank tube body 3, a hot water outlet pipe 12 is inserted, which serves to remove the heated water, which is pressed by the cold water entering the water tank below through the hot water outlet pipe 12 to a water tap, not shown.

Der Ventil- und Kolbengehäusekörper 8 enthält ein Kolbenventil 13 in einem dort eingesetzten Führungsstück 14. Das Kolbenventil 13 besitzt einen Ventilteller 15, der in der Ruhe- bzw. Ausgangsstellung des Kolbenventils 13 auf dem Führungsstück 14 dicht aufliegt und einen mit dem Kaltwasserzulauf in Verbindung stehenden Stauraum 16 verschlossen hält. Der Kolben des Kolbenventils 13, der oberhalb der Bodenplatte 4 des Wasserbehälters 1 aus dem Ventil- und Kolbengehäusekörper 8 herausgeführt ist, trägt in diesem Bereich eine pilzartige Kappe 17. Über der pilzartigen Kappe 17 und damit hinter der Bodenplatte 4 im Innern des Wasserbehälters 1 ist eine membranartige Dichtungsplatte 18 gespannt, deren Randwulst 19 im vertieften Flanschrand 20 der Bodenplatte 4 eingelegt ist. Beide Platten 4, 18 sind mit einem Flanschrand 21 des Wasserbehälter-Rohrkörpers 3 dicht verbunden. Im Bereich unterhalb der pilzartigen Kappe 17 ist in der Bodenplatte 4 zweckmäßig eine Entlüftungsöffnung 22 eingebracht.The valve and piston housing body 8 contains a piston valve 13 in a guide piece 14 inserted there. The piston valve 13 has a valve plate 15 which rests on the guide piece 14 in the rest or initial position of the piston valve 13 and is connected to the cold water inlet Storage space 16 keeps closed. The piston of the piston valve 13, which is led out of the valve and piston housing body 8 above the base plate 4 of the water container 1, carries a mushroom-like cap 17 in this area. It is above the mushroom-like cap 17 and thus behind the base plate 4 inside the water container 1 a membrane-like sealing plate 18 stretched, the edge bead 19 is inserted in the recessed flange 20 of the base plate 4. Both plates 4, 18 are tightly connected to a flange 21 of the water tank tube body 3. In the area below the mushroom-like cap 17, a vent opening 22 is expediently introduced in the base plate 4.

Die Arbeitsweise des beschriebenen Warmwasserbereiters mit einer Einrichtung zum Verändern des Wasserbehältervolumens, um das Austreten bzw. Austropfen von Ausdehnungswasser während des Aufheizvorganges zu vermeiden, ist folgende:
Mit Öffnen der nicht dargestellten Warmwasserzapfstelle, an der das Warmwasserauslaufrohr 12 endet, wird über das Magnetventil 6 der Kaltwasserzulauf zum Kaltwasserzulaufrohr 7 freigegeben. Der dann anstehende Druck des Kaltwassers wirkt im Stauraum 16 gegen den Teller 15 des Kolbenventils 13. Dies hat zur Folge, daß das Kolbenventil 13 und damit die mit diesem gekoppelte Kappe 17 angehoben werden. Die über die Kappe 17 gespannte membranartige Dichtungsplatte 18 wird zwangsläufig ebenfalls angehoben und drückt bzw. verdrängt dabei eine bestimmte volumenabhängige Wassermenge (etwa 4 % des Wasserbehälterinhalts) über das Warmwasserauslaufrohr 12 zur Warmwasserzapfstelle. Zwischen der membranartigen Dichtungsplatte 18 und der Bodenplatte 14 stellt sich eine wasserfreie Kammer 23 ein, deren Volumen etwa 4 % vom Wasserinhalt des Wasserbehälters 1 ist.
Hat das Kolbenventil 13 im Ventil- und Kolbengehäusekörper 8 seine Endstellung erreicht, ist der Kaltwasserzulauf über die Rohrkrümmereinheit 7′ zum Wasserbehälter 1 freigegeben. Solange nun die Warmwasserzapfstelle geöffnet ist, wird infolge der entstehenden Kaltwasserzufuhr über das Warmwasserauslaufrohr 12 Warmwasser zur Zapfstelle gedrückt. Mit Schließen der Warmwasserzapfstelle und damit Unterbinden der Kaltwasserzufuhr zum Wasserbehälter 1 geht das Kolbenventil 13 mit seiner angekoppelten Kappe 17 in seine Ausgangsposition gemäß Fig. 1 zurück. Infolge des Druckes des im Wasserbehälter 1 anstehenden Wassers folgt die membranartige Dichtungsplatte 18 zwangsläufig dem Rückgang des Kolbenventils 13. Der Wasserspiegel im Wasserbehälter 1 senkt sich entsprechend dem vorher verdrängtem Volumen ab, wodurch sich im Wasserbehälter 1 oben ein wasserfreier Raum 24 entsprechend dem Rauminhalt der Kammer 23 einstellt, der dann das beim Aufheizen des Wasserbehälterinhaltes entstehende Ausdehungswasser aufnehmen kann, wodurch das Austropfen von Wasser aus der Warmwasserzapfstelle vemieden ist.The method of operation of the water heater described with a device for changing the water tank volume in order to avoid the escape or dripping of expansion water during the heating process is as follows:
When the hot water tap, not shown, at which the hot water outlet pipe 12 ends, is opened, the cold water inlet to the cold water inlet pipe 7 is released via the solenoid valve 6. The then existing pressure of the cold water acts in the storage space 16 against the plate 15 of the piston valve 13. This has the consequence that the piston valve 13 and thus the cap 17 coupled to it are raised. The membrane-like sealing plate 18 stretched over the cap 17 is also inevitably raised and pushes or displaces a certain volume-dependent amount of water (about 4% of the water tank content) via the hot water outlet pipe 12 to the hot water tap. A water-free chamber 23 is set up between the membrane-like sealing plate 18 and the base plate 14, the volume of which is approximately 4% of the water content of the water container 1.
Has the piston valve 13 in the valve and piston housing body 8 reached its end position, the cold water supply via the elbow unit 7 'to the water tank 1 is released. As long as that Hot water tap is open, 12 hot water is pressed to the tap due to the resulting cold water supply via the hot water outlet pipe. When the hot water tap is closed and the cold water supply to the water tank 1 is shut off, the piston valve 13 with its attached cap 17 returns to its starting position according to FIG. 1. As a result of the pressure of the water present in the water tank 1, the membrane-like sealing plate 18 inevitably follows the decline of the piston valve 13. The water level in the water tank 1 lowers in accordance with the previously displaced volume, as a result of which a water-free space 24 in the water tank 1 above corresponds to the volume of the chamber 23 adjusts which can then take up the expansion water which arises when the contents of the water tank are heated up, as a result of which water drips from the hot water tap is avoided.

Claims (9)

1. Offener Warmwasserbereiter mit einer Warmwasserzapfstelle, bei dem das zu erwärmende Wasser in einem einen Kaltwasserzulauf und einen Warmwasserauslauf aufweisenden Wasserbehälter aufheiz- und speicherbar ist, sowie mit einer Einrichtung zum Verändern des Behältervolumens, dadurch gekennzeichnet, daß die Einrichtung zum Verändern des Behältervolumens ein innerer Bestandteil des Warmwasserbehälters (1) ist, durch die mit Öffnen der Warmwasserzapfstelle über den auf diese einwirkenden Kaltwasserdruck durch eine Wasserverdrängung im Wasserbehälter (1) eine vom Wasserinhalt getrennte wasserfreie Kammer (23) eingestellt wird, deren Rauminhalt das Raummaß für einen sich einstellenden wasserfreien Raum (24) im Wasserbehälter nach Schließen der Warmwasserzapfstelle abgibt.1.Open water heater with a hot water tap, in which the water to be heated can be heated and stored in a water container having a cold water inlet and a hot water outlet, and with a device for changing the tank volume, characterized in that the device for changing the tank volume is internal A component of the hot water tank (1) is a water-free chamber (23) separated from the water content by opening the hot water tap via the cold water pressure acting on it by displacing water in the water tank (1) (24) in the water tank after closing the hot water tap. 2. Warmwasserbereiter nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtung aus einer im Innern des Wasserbehälters (1) angeordneten membranartigen Dichtungsplatte (18) sowie ein auf die Dichtungsplatte einwirkendes Kolbenventil (13) besteht, das vom Druck des zufließenden Kaltwassers beaufschlagbar ist und daß mit dem Kolbenventil (13) eine pilzartige Kappe (17) gekoppelt ist, über die die membranartige Dichtungsplatte (18) gespannt ist, die zusammen mit einer Bodenplatte (4) den Abschluß des Wasserbehälter-Rohrkörpers (3) bildet.2. Water heater according to claim 1, characterized in that the device consists of an inside of the water tank (1) arranged membrane-like sealing plate (18) and an acting on the sealing plate piston valve (13) which can be acted upon by the pressure of the incoming cold water and that with the piston valve (13) a mushroom-like cap (17) is coupled, over which the membrane-like sealing plate (18) is stretched, which together with a base plate (4) forms the end of the water tank tube body (3). 3. Warmwasserbereiter nach Anspruch 2, dadurch gekennzeichnet, daß zwischen der membranartigen Dichtungsplatte (18) und der Bodenplatte (4) die mit dem Kolbenventil (13) gekoppelte pilzartige Kappe (17) angeordnet ist.3. Water heater according to claim 2, characterized in that between the membrane-like sealing plate (18) and the base plate (4) the mushroom-like cap (17) coupled to the piston valve (13) is arranged. 4. Warmwasserbereiter nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß in der Bodenplatte (4) eine Entlüftungsöffnung (22) eingebracht ist.4. Water heater according to claim 2 or 3, characterized in that a vent opening (22) is introduced in the base plate (4). 5. Warmwasserbereiter nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die membranartige Dichtungsplatte (18) mit ihrer Randwulst (19) im vertieften Flanschrand (20) der Bodenplatte (4) eingelegt ist und beide Platten (4, 18) mit dem Wasserbehälter-Rohrkörper (3) dicht verbunden sind.5. Water heater according to claim 2 or 3, characterized in that the membrane-like sealing plate (18) with its edge bead (19) in the recessed flange (20) of the base plate (4) is inserted and both plates (4, 18) with the water tank Pipe body (3) are tightly connected. 6. Warmwasserbereiter nach Anspruch 2, dadurch gekennzeichnet, daß das Kolbenventil (13) in einem in der Bodenplatte (4) gehalterten Ventil- und Kolbengehäusekörper (8) geführt ist und daß im Ventil- und Kolbengehäusekörper (8) ein Führungsstück (14) für den Kolbenventilkörper (13) eingesetzt ist.6. Water heater according to claim 2, characterized in that the piston valve (13) in a in the base plate (4) held valve and piston housing body (8) and that in the valve and piston housing body (8) a guide piece (14) for the piston valve body (13) is inserted. 7. Warmwasserbereiter nach Anspruch 2 oder 6, dadurch gekennzeichnet, daß das Kolbenventil (13) einen den Kaltwasserzulauf zum Ventil- und Kolbengehäusekörper (8) beherrschenden Ventilteller (15) aufweist.7. Water heater according to claim 2 or 6, characterized in that the piston valve (13) has a cold water inlet to the valve and piston housing body (8) dominating valve plate (15). 8. Warmwasserbereiter nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß am Ventil- und Kolbengehäusekörper (8) ein Eingangsrohrstutzen (9) für das Kaltwasserzulaufrohr (7) und ein Ausgangsrohrstutzen (10) für eine in den Wasserbehälter (1) mündende Rohrkrümmereinheit (7) als Fortsatz des Kaltwasserzulaufrohres (7) ausgebildet ist.8. Water heater according to claim 6 or 7, characterized in that on the valve and piston housing body (8) has an inlet pipe socket (9) for the cold water inlet pipe (7) and an outlet pipe socket (10) for a pipe elbow unit (7) opening into the water container (1) ) is designed as an extension of the cold water inlet pipe (7). 9. Warmwasserbereiter nach Anspruch 8, dadurch gekennzeichnet, daß das Kaltwasserzulaufrohr (7) außerhalb des Wasserbehälters (1) geführt ist.9. Water heater according to claim 8, characterized in that the cold water supply pipe (7) outside the water tank (1) is guided.
EP88113382A 1987-08-29 1988-08-18 Open water heater Expired - Lifetime EP0305813B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88113382T ATE81397T1 (en) 1987-08-29 1988-08-18 OPEN WATER HEATER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3728919 1987-08-29
DE19873728919 DE3728919A1 (en) 1987-08-29 1987-08-29 OPEN WATER HEATER

Publications (2)

Publication Number Publication Date
EP0305813A1 true EP0305813A1 (en) 1989-03-08
EP0305813B1 EP0305813B1 (en) 1992-10-07

Family

ID=6334790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88113382A Expired - Lifetime EP0305813B1 (en) 1987-08-29 1988-08-18 Open water heater

Country Status (10)

Country Link
US (1) US4862834A (en)
EP (1) EP0305813B1 (en)
JP (1) JPH0792283B2 (en)
AT (1) ATE81397T1 (en)
CA (1) CA1291196C (en)
DE (2) DE3728919A1 (en)
ES (1) ES2035198T3 (en)
GB (1) GB2209203B (en)
GR (1) GR3006032T3 (en)
HK (1) HK82191A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103591694A (en) * 2012-08-13 2014-02-19 贺国新 Water boiler with water switch
CN103912982A (en) * 2013-01-07 2014-07-09 爱烙达股份有限公司 Water heater with hot and cold water mixing function
DE10163795B4 (en) * 2001-12-22 2014-10-09 Stiebel Eltron Gmbh & Co. Kg Open water heater with a volume change control element

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WO1993015367A1 (en) * 1992-01-29 1993-08-05 Sheringham Investments Pty. Ltd. Continuous water heater
DE4225827A1 (en) * 1992-08-05 1994-02-10 Forbach Gmbh Open hot water tank
US5277152A (en) * 1993-01-15 1994-01-11 Liao Hsin Yen Water heater
DE4302113A1 (en) * 1993-01-27 1994-07-28 Forbach Gmbh Open water heater
EP0665410A1 (en) 1994-01-26 1995-08-02 FORBACH GmbH Open water heater
EP1391593A1 (en) * 2002-08-19 2004-02-25 Perkins Engines Company Limited Fluid filtration system with resiliently expandable filter element
GB2402994B (en) * 2003-06-18 2005-11-09 George Hanson-Graville Unvented water storage tank apparatus
US6920844B1 (en) 2004-04-07 2005-07-26 Sioux Chief Manufacturing Co., Inc. Thermal expansion arrester for water heaters
US9310098B2 (en) 2006-01-27 2016-04-12 Emerson Electric Co. Water heater control using external temperature sensor
US9188363B2 (en) 2006-01-27 2015-11-17 Emerson Electric Co. Smart energy controlled water heater
US9151516B2 (en) * 2006-01-27 2015-10-06 Emerson Electric Co. Smart energy controlled water heater
WO2015022693A1 (en) * 2013-08-15 2015-02-19 Chromagen Agricultural Cooperative Society Ltd. Expandable boiler

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EP0276475A2 (en) * 1987-01-10 1988-08-03 Forbach GmbH Water boiler volume compensating device for a hot water boiler

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BE739712A (en) * 1969-10-01 1970-03-16
DE3040450A1 (en) * 1980-10-27 1982-05-13 Horst Dr.-Ing. 8000 München Pichert Water-heating tank volume compensation system - has temp. dependent adjustment portion to vary volume
EP0276475A2 (en) * 1987-01-10 1988-08-03 Forbach GmbH Water boiler volume compensating device for a hot water boiler

Cited By (4)

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Publication number Priority date Publication date Assignee Title
DE10163795B4 (en) * 2001-12-22 2014-10-09 Stiebel Eltron Gmbh & Co. Kg Open water heater with a volume change control element
CN103591694A (en) * 2012-08-13 2014-02-19 贺国新 Water boiler with water switch
CN103591694B (en) * 2012-08-13 2016-01-20 贺国新 A kind of boiler with hydraulic pressure switch
CN103912982A (en) * 2013-01-07 2014-07-09 爱烙达股份有限公司 Water heater with hot and cold water mixing function

Also Published As

Publication number Publication date
JPS6470646A (en) 1989-03-16
EP0305813B1 (en) 1992-10-07
HK82191A (en) 1991-10-25
GR3006032T3 (en) 1993-06-21
ATE81397T1 (en) 1992-10-15
GB2209203B (en) 1991-06-26
DE3728919A1 (en) 1989-03-09
US4862834A (en) 1989-09-05
JPH0792283B2 (en) 1995-10-09
ES2035198T3 (en) 1993-04-16
GB2209203A (en) 1989-05-04
GB8819250D0 (en) 1988-09-14
CA1291196C (en) 1991-10-22
DE3875204D1 (en) 1992-11-12

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