EP2060855A1 - Connecting piece for a tube-shaped inner circulation pipe, water circulation pipe with such a connecting piece and method for assembling such a water circulation pipe - Google Patents

Connecting piece for a tube-shaped inner circulation pipe, water circulation pipe with such a connecting piece and method for assembling such a water circulation pipe Download PDF

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Publication number
EP2060855A1
EP2060855A1 EP07405325A EP07405325A EP2060855A1 EP 2060855 A1 EP2060855 A1 EP 2060855A1 EP 07405325 A EP07405325 A EP 07405325A EP 07405325 A EP07405325 A EP 07405325A EP 2060855 A1 EP2060855 A1 EP 2060855A1
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EP
European Patent Office
Prior art keywords
inner circulation
riser
end piece
piece
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
EP07405325A
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German (de)
French (fr)
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EP2060855B1 (en
Inventor
Rudolf Allemann
Goran Keller
Urs Rüegg
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.)
Geberit International AG
Original Assignee
Geberit Technik AG
Geberit International AG
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Publication date
Application filed by Geberit Technik AG, Geberit International AG filed Critical Geberit Technik AG
Priority to EP20070405325 priority Critical patent/EP2060855B1/en
Priority to NO20083972A priority patent/NO20083972L/en
Publication of EP2060855A1 publication Critical patent/EP2060855A1/en
Application granted granted Critical
Publication of EP2060855B1 publication Critical patent/EP2060855B1/en
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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
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0078—Recirculation systems
    • 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
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0078—Recirculation systems
    • F24D17/0084—Coaxial tubings

Definitions

  • the invention relates to a closure piece for a tubular inner circulation tube, which is arranged in a riser and forms with this a water circulation line for a service water or heating water supply system, with a connecting part, with which the end piece with the upper end of the inner circulation tube is connectable and with a support member, with which the end piece can be supported on the riser.
  • Such a conclusion piece is in the prior art from the DE 29920286 U known. This is designed in several parts and has a connection for the internal circulation as well as a connection for the riser. Both ports are arranged to each other so that the water can flow from the riser within the end piece in the inner circulation line.
  • the end piece should be made of standard components. The disadvantage, however, is that with such a completion piece, the installation of a water circulation line is relatively expensive. At least two fitters are required for the assembly.
  • the invention is based on the object to provide a closure piece of the type mentioned, which allows for easier installation and / or less expensive to produce.
  • the supporting part is designed as a clamping part which is slidably mounted in the riser.
  • the inventive end piece is not fixed by screwing or with a flange on the riser, but is slidably disposed only with a clamping part and thus floating in the riser. The connection is thus frictional, so that a complex screwing or otherwise mechanical connection with the riser is not required.
  • the end piece can be made very easily and in one piece. In particular, the end piece can be produced as a one-piece plastic part.
  • the assembly is very simple, since the introduced into the riser inner circulation tube is displaceable in the riser. A water circulation pipe can therefore be easily and yet securely mounted with this end piece by a single installer.
  • closure piece according to the invention is particularly suitable in connection with a fitting according to European patent application no. 07405219.2 , which was submitted on July 26, 2007.
  • the end piece can then be made and mounted particularly cost-effective, if it has, according to a development of the invention, an elastic support member which can be tensioned against the inside of the riser.
  • the support member is in this case preferably designed as an elastic retaining tab, for example as a ring or as a clip.
  • the connecting part is designed as a screwable part which can be screwed into the upper end of the inner circulation line.
  • the End piece can thus be easily connected to the inner circulation tube. Clamps or the like are not required.
  • the connecting part has a channel through which water can flow from the outside into the inner circulation tube.
  • this channel is connected to a transverse bore. The water can then pass from the riser through the transverse bore in the said channel and through this in the inner circulation tube.
  • the invention also relates to a water circulation pipe with such a closure piece.
  • the end piece is connected at a lower end to a connecting piece, which has an insert which is connected to the lower end of the inner circulation tube.
  • the insert during assembly with the inner circulation tube can be pulled down from a housing of the connection piece.
  • This allows mounting, in which the tubular and flexible inner circulation tube can be pulled from above into the riser.
  • With the attached end piece can then be pulled out of the housing of the connector down the inner circulation tube at its lower end by a certain length.
  • the insert can now be placed on the lower end of the inner circulation tube and finally pushed up and attached to the housing of the connector.
  • the end piece is moved up or down in this assembly accordingly.
  • the FIG. 1 shows a water circulation line 1, which has a connection piece 20 at a lower end, to which a supply line 2, a riser pipe 3 and an inner circulation pipe 4 are connected.
  • the supply line 2 is connected to a hot water boiler not shown here a heating system. Through this supply line 2 and through a passage 19 in port 20, the riser 3 hot water can be supplied.
  • the riser 3 leads, for example, from a basement through a building floor 5 upwards over several floors of a building, not shown here. In each floor, the riser pipe 3 may be connected via a respective tee 6 with a line 7 to which, for example, a faucet is connected. In the FIG. 1 only one tee 6 is shown. In general, however, several such T-pieces 6 are connected to the riser pipe 3 according to the number of floors.
  • the inner circulation tube 4 has an upper end 4a with an opening 8 into which a connection piece 25 is inserted and in particular screwed. Through a transverse bore 29 and a channel 28 in the end piece 25, water can flow from the riser pipe 3 into the inner circulation pipe 4.
  • the water flowing downwards in the inner circulation pipe 4 passes through a first branch 16a and through a second branch 16b of an insert 14 into a return line 4b, which is connected to a housing 13 of the connecting piece 20 at a connecting piece 12.
  • the return line 4b is connected to a pump, not shown here, so that the circulating in the inner circulation tube 4 water can be returned to the water boiler.
  • the housing 13 of the connector 20 is made, for example, of a suitable metal and has a bore 15 into which the insert 14 is inserted from below. With a seal 18, this insert 14 is sealed relative to the housing 13. By means of a nut 17, which is screwed into the bore 15, the insert 14 is releasably secured to the housing 13. Is the mother 17 unscrewed out of the housing 13, the insert 14 can be freely pulled down from the housing 13.
  • the insert 14 has an upwardly projecting connection piece 11, to which the lower end of the inner circulation tube is connected.
  • the connection between the connecting piece 11 and the lower end of the inner circulation line 4 can be arbitrary per se. This is preferably a screw connection. It is also conceivable, for example, a press connection.
  • the insert 14 is thus preferably screwed from below into the inner circulation tube 4.
  • the first branch 16a of the passage 16 extends vertically. At the lower end of this branch 16a, the water flowing through is deflected by 90 ° degrees and then runs horizontally in the second branch 16b in the return line 4b.
  • the riser 3 is connected at its lower end with an upwardly projecting connection piece 10 with the housing 13.
  • the connecting piece 10 may be provided for a press connection.
  • the inner circulation tube 3 is preferably made of plastic and flexible. At its upper end 4a, the inner circulation pipe 4 is supported by the end piece 25 at the upper end 31 of the riser pipe 3.
  • the end piece 25 has a support part 26 and a connecting part 27.
  • the connecting part 27 has on the outside a screw thread not shown here, so that the connecting piece 25 can be screwed from above through the opening 8 in the end 4a.
  • the diameter of the connecting part 27 is slightly larger than the inner diameter of the inner circulation tube 4. When screwing in the connecting part 27 thus the upper end 4a is slightly stretched.
  • the said channel 28 which is connected to the transverse bore 29 extends. Water can thus pass through the transverse bore 29 from two sides into the channel 28 and in this down into the inner circulation tube 4.
  • the support member 26 is annular and elastic. He is also trained to be in the in FIG. 1 shown inserted state elastically tensioned on the inside of the riser pipe 3. Due to this tension, the end piece 25 is fixed in the riser pipe 3 and thus the inner circulation pipe 3 is supported at the upper end 4a. With a predetermined force, however, the end piece 25 can be moved in the riser 3 up and down. The connection of the end piece 25 with the riser pipe 3 is thus a frictional connection. The end piece 25 can thus be moved continuously in the riser 3. In each position, the end piece 25 is fixed by the tension of the support member 26.
  • the connecting piece 25 is preferably made in one piece from plastic.
  • the support member 26 and the connecting part 27 could also be separately manufactured parts which are connected to each other, for example screwed. When assembled, however, the end piece 25 forms a unit.
  • the upper end 31 of the riser pipe 3 is connected to a fitting 30, for example, an elbow with a conduit 32 shown only partially here, which can also lead to a consumer.
  • end piece 25 ' differs from the above-described end piece 25 in that it is designed as a top open clip.
  • the end piece 25 ' is also elastic and can be moved vertically with the inner circulation tube 4.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Domestic Plumbing Installations (AREA)
  • Supports For Pipes And Cables (AREA)

Abstract

The end piece (25) has a connection part (27), and the end piece is connected with upper end (4a) of an interior circulation pipe (4). A supporting piece (26) provides support to the end piece at the stand pipe. The supporting piece is formed as clamped piece that is adjustable and slidable in the stand pipe. Independent claims are included for the following: (1) a water circulation pipeline with an insert; and (2) a method for monitoring a water circulation pipeline.

Description

Die Erfindung betrifft ein Abschlussstück für ein schlauchförmiges Innenzirkulationsrohr, das in einem Steigrohr angeordnet ist und mit diesem eine Wasserzirkulationsleitung für eine Brauchwasser- oder Heizwasserversorgungsanlage bildet, mit einem Verbindungsteil, mit dem das Abschlussstück mit dem oberen Ende des Innenzirkulationsrohrs verbindbar ist und mit einem Stützteil, mit dem das Abschlussstück am Steigrohr abstützbar ist.The invention relates to a closure piece for a tubular inner circulation tube, which is arranged in a riser and forms with this a water circulation line for a service water or heating water supply system, with a connecting part, with which the end piece with the upper end of the inner circulation tube is connectable and with a support member, with which the end piece can be supported on the riser.

Ein solches Abschlussstück ist im Stand der Technik aus der DE 29920286 U bekannt geworden. Dieses ist mehrteilig ausgebildet und besitzt einen Anschluss für die Innenzirkulation als auch einen Anschluss für das Steigrohr. Beide Anschlüsse sind zueinander so angeordnet, dass das Wasser aus dem Steigrohr innerhalb des Abschlussstückes in die Innenzirkulationsleitung strömen kann. Das Abschlussstück soll aus Standardbauteilen herstellbar sein. Nachteilig ist jedoch, dass mit einem solchen Abschlussstück die Montage einer Wasserzirkulationsleitung vergleichsweise aufwendig ist. Für die Montage sind wenigstens zwei Monteure erforderlich.Such a conclusion piece is in the prior art from the DE 29920286 U known. This is designed in several parts and has a connection for the internal circulation as well as a connection for the riser. Both ports are arranged to each other so that the water can flow from the riser within the end piece in the inner circulation line. The end piece should be made of standard components. The disadvantage, however, is that with such a completion piece, the installation of a water circulation line is relatively expensive. At least two fitters are required for the assembly.

Ein weiteres Abschlussstück dieser Art ist im Stand der Technik aus der EP-A-0 299 471 bekannt geworden. Dieses ist ebenfalls mehrteilig ausgebildet und besitzt ein Stützrohr, das mit einem Klemmring am oberen Ende des Innenzirkulationsrohres befestigt ist. An diesem Stützrohr ist ein Stützflansch angeschweisst, der an einer erweiterten Schulter des Steigrohres aufliegt. Auch hier ist die Montage einer Wasserzirkulationsleitung vergleichsweise aufwändig.Another final piece of this kind is in the prior art from the EP-A-0 299 471 known. This is also designed in several parts and has a support tube which is fastened with a clamping ring at the upper end of the inner circulation tube. At this support tube is a Welded support flange, which rests on an extended shoulder of the riser. Again, the installation of a water circulation pipe is relatively expensive.

Der Erfindung liegt die Aufgabe zu Grunde, ein Abschlussstück der genannten Art zu schaffen, das eine einfachere Montage ermöglicht und/oder kostengünstiger herstellbar ist.The invention is based on the object to provide a closure piece of the type mentioned, which allows for easier installation and / or less expensive to produce.

Die Aufgabe ist gemäss Anspruch 1 dadurch gelöst, dass der Stützteil als Klemmteil ausgebildet ist, der im Steigrohr gleitbar befestigbar ist. Das erfindungsgemässe Abschlussstück wird nicht durch verschrauben oder mit einem Flansch am Steigrohr befestigt, sondern wird lediglich mit einem Klemmteil gleitbar und somit schwimmend im Steigrohr angeordnet. Die Verbindung ist somit reibschlüssig, so dass ein aufwändiges Verschrauben oder anderweitiges mechanisches Verbinden mit dem Steigrohr nicht erforderlich ist. Das Abschlussstück kann sehr einfach und einstückig hergestellt werden. Insbesondere kann das Abschlussstück als einstückiges Kunststoffteil hergestellt werden. Die Montage ist sehr einfach, da das in das Steigrohr eingeführte Innenzirkulationsrohr im Steigrohr verschiebbar ist. Eine Wasserzirkulationsleitung kann deshalb mit diesem Abschlussstück von einem einzigen Monteur einfach und dennoch sicher montiert werden.The object is achieved according to claim 1, characterized in that the supporting part is designed as a clamping part which is slidably mounted in the riser. The inventive end piece is not fixed by screwing or with a flange on the riser, but is slidably disposed only with a clamping part and thus floating in the riser. The connection is thus frictional, so that a complex screwing or otherwise mechanical connection with the riser is not required. The end piece can be made very easily and in one piece. In particular, the end piece can be produced as a one-piece plastic part. The assembly is very simple, since the introduced into the riser inner circulation tube is displaceable in the riser. A water circulation pipe can therefore be easily and yet securely mounted with this end piece by a single installer.

Vorteilhaft ist zudem, dass aufgrund der schwimmenden Lagerung des Abschlussteils im Steigrohr Längenänderungen durch Verschieben des Abschlussstücks im Steigrohr aufgenommen werden können. Spannungen und Geräusche können damit vermieden werden.It is also advantageous that due to the floating mounting of the end part in the riser length changes can be accommodated by moving the end piece in the riser. Tensions and noises can be avoided.

Das erfindungsgemässe Abschlussstück eignet sich insbesondere in Verbindung mit einem Anschlussstück gemäss der europäischen Patentanmeldung Nr. 07405219.2 , die am 26. Juli 2007 eingereicht wurde.The closure piece according to the invention is particularly suitable in connection with a fitting according to European patent application no. 07405219.2 , which was submitted on July 26, 2007.

Das Abschlussstück kann dann besonders kostengünstig hergestellt und montiert werden, wenn es gemäss einer Weiterbildung der Erfindung einen elastischen Stützteil aufweist, der gegen die Innenseite des Steigrohres spannbar ist. Der Stützteil ist hierbei vorzugsweise als elastische Haltelasche, beispielsweise als Ring oder als Klammer ausgebildet.The end piece can then be made and mounted particularly cost-effective, if it has, according to a development of the invention, an elastic support member which can be tensioned against the inside of the riser. The support member is in this case preferably designed as an elastic retaining tab, for example as a ring or as a clip.

Nach einer Weiterbildung der Erfindung ist vorgesehen, dass der Verbindungsteil als schraubbarer Teil ausgebildet ist, der in das obere Ende der Innenzirkulationsleitung einschraubbar ist. Das Abschlussstück kann somit in einfacher weise mit dem Innenzirkulationsrohr verbunden werden. Klemmen oder dergleichen sind nicht erforderlich.According to a development of the invention, it is provided that the connecting part is designed as a screwable part which can be screwed into the upper end of the inner circulation line. The End piece can thus be easily connected to the inner circulation tube. Clamps or the like are not required.

Nach einer Weiterbildung der Erfindung ist vorgesehen, dass der Verbindungsteil einen Kanal aufweist, durch den Wasser von Aussen in das Innenzirkulationsrohr fliessen kann. Vorzugsweise ist dieser Kanal mit einer Querbohrung verbunden. Das Wasser kann dann vom Steigrohr durch die Querbohrung in den genannten Kanal und durch diesen in das Innenzirkulationsrohr gelangen.According to a development of the invention it is provided that the connecting part has a channel through which water can flow from the outside into the inner circulation tube. Preferably, this channel is connected to a transverse bore. The water can then pass from the riser through the transverse bore in the said channel and through this in the inner circulation tube.

Die Erfindung betrifft zudem eine Wasserzirkulationsleitung mit einem solchen Abschlussstück. Hierbei ist vorzugsweise vorgesehen, dass das Abschlussstück an einem unteren Ende an ein Anschlussstück angeschlossen ist, das einen Einsatz aufweist, der mit dem unteren Ende des Innenzirkulationsrohres verbunden ist.The invention also relates to a water circulation pipe with such a closure piece. Here, it is preferably provided that the end piece is connected at a lower end to a connecting piece, which has an insert which is connected to the lower end of the inner circulation tube.

Gemäss einer Weiterbildung der Erfindung ist vorgesehen, dass der Einsatz bei der Montage mit dem Innenzirkulationsrohr nach unten aus einem Gehäuse des Anschlussstücks herausziehbar ist. Dies ermöglicht eine Montage, bei welcher das schlauchförmige und flexible Innenzirkulationsrohr von oben in das Steigrohr eingezogen werden kann. Mit dem aufgesetzten Abschlussstück kann dann das Innenzirkulationsrohr an seinem unteren Ende um eine bestimmte Länge aus dem Gehäuse des Anschlussstücks nach unten herausgezogen werden. Der Einsatz kann nun auf das untere Ende des Innenzirkulationsrohres aufgesetzt und schliesslich nach oben geschoben und am Gehäuse des Anschlussstücks befestigt werden. Das Abschlussstück wird bei dieser Montage entsprechend nach oben bzw. nach unten verschoben. Dieses Verfahren ermöglicht eine einfache und dennoch sichere Einmannmontage einer Wasserzirkulationsleitung.According to a development of the invention it is provided that the insert during assembly with the inner circulation tube can be pulled down from a housing of the connection piece. This allows mounting, in which the tubular and flexible inner circulation tube can be pulled from above into the riser. With the attached end piece can then be pulled out of the housing of the connector down the inner circulation tube at its lower end by a certain length. The insert can now be placed on the lower end of the inner circulation tube and finally pushed up and attached to the housing of the connector. The end piece is moved up or down in this assembly accordingly. This method allows a simple yet safe one-man installation of a water circulation pipe.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:

Figur 1
Ein Vertikalschnitt durch eine Wasserzirkulationsleitung mit einem erfindungsgemässen Abschlussstück
Figuren 2a-2e
schematisch einzelne Schritte bei der Montage einer Wasserzirkulationsleitung und
Figur 3
einen Schnitt durch das obere Ende des Innenzirkulationsrohres mit einem Abschlussstück gemäss einer Variante.
Embodiments of the invention will be explained in more detail with reference to the drawing. Show it:
FIG. 1
A vertical section through a water circulation pipe with an inventive end piece
FIGS. 2a-2e
schematically individual steps in the assembly of a water circulation pipe and
FIG. 3
a section through the upper end of the inner circulation tube with a closure piece according to a variant.

Die Figur 1 zeigt eine Wasserzirkulationsleitung 1, die an einem unteren Ende ein Anschlussstück 20 besitzt, an dem eine Zulaufleitung 2, ein Steigrohr 3 und ein Innenzirkulationsrohr 4 angeschlossen sind. Die Zulaufleitung 2 ist an einem hier nicht gezeigten Warmwasserboiler einer Heizungsanlage anschlossen. Durch diese Zulaufleitung 2 und durch einen Durchgang 19 im Anschluss 20 kann dem Steigrohr 3 Warmwasser zugeführt werden. Das Steigrohr 3 führt beispielsweise von einem Kellergeschoss durch einen Gebäudeboden 5 nach oben über mehrere Etagen eines hier nicht gezeigten Gebäudes. In jeder Etage kann das Steigrohr 3 über jeweils ein T-Stück 6 mit einer Leitung 7 verbunden sein, an der beispielsweise ein Wasserhahn angeschlossen ist. In der Figur 1 ist lediglich ein T-Stück 6 gezeigt. In der Regel sind aber entsprechend der Anzahl der Etagen mehrere solche T-Stücke 6 an das Steigrohr 3 angeschlossen.The FIG. 1 shows a water circulation line 1, which has a connection piece 20 at a lower end, to which a supply line 2, a riser pipe 3 and an inner circulation pipe 4 are connected. The supply line 2 is connected to a hot water boiler not shown here a heating system. Through this supply line 2 and through a passage 19 in port 20, the riser 3 hot water can be supplied. The riser 3 leads, for example, from a basement through a building floor 5 upwards over several floors of a building, not shown here. In each floor, the riser pipe 3 may be connected via a respective tee 6 with a line 7 to which, for example, a faucet is connected. In the FIG. 1 only one tee 6 is shown. In general, however, several such T-pieces 6 are connected to the riser pipe 3 according to the number of floors.

Das Innenzirkulationsrohr 4 besitzt ein oberes Ende 4a mit einer Öffnung 8, in die ein Anschlussstück 25 eingesetzt und insbesondere eingeschraubt ist. Durch eine Querbohrung 29 und einen Kanal 28 im Abschlussstück 25 kann Wasser vom Steigrohr 3 in das Innenzirkulationsrohr 4 fliessen. Das im Innenzirkulationsrohr 4 nach unten strömende Wasser gelangt durch einen ersten Ast 16a und durch einen zweiten Ast 16b eines Einsatzes 14 in eine Rücklaufleitung 4b, die an einem Anschlussstutzen 12 mit einem Gehäuse 13 des Anschlussstückes 20 verbunden ist. Die Rücklaufleitung 4b ist an eine hier nicht gezeigte Pumpe angeschlossen, so dass das im Innenzirkulationsrohr 4 zirkulierende Wasser wieder dem Wasserboiler zugeführt werden kann. Ist die Pumpe ständig in Betrieb, so wird ein Strömungskreislauf aufrechterhalten, bei dem warmes Wasser im Steigrohr 3 nach oben strömt und dann durch das Abschlussstück 25 nach unten und durch einen Durchgang 16 in die Rücklaufleitung 4b und schliesslich wieder in den Warmwasserboiler gelangt. Damit kann erreicht werden, dass auch bei einem hohen Gebäude mit mehreren Etagen in jeder Etage im Wesentlichen sofort Warmwasser zur Verfügung steht. Der Wärmeverlust kann vergleichsweise klein gehalten werden.The inner circulation tube 4 has an upper end 4a with an opening 8 into which a connection piece 25 is inserted and in particular screwed. Through a transverse bore 29 and a channel 28 in the end piece 25, water can flow from the riser pipe 3 into the inner circulation pipe 4. The water flowing downwards in the inner circulation pipe 4 passes through a first branch 16a and through a second branch 16b of an insert 14 into a return line 4b, which is connected to a housing 13 of the connecting piece 20 at a connecting piece 12. The return line 4b is connected to a pump, not shown here, so that the circulating in the inner circulation tube 4 water can be returned to the water boiler. If the pump is constantly in operation, then a flow circuit is maintained in which warm water in the riser pipe 3 flows upward and then passes through the end piece 25 down and through a passage 16 in the return line 4b and finally back into the hot water boiler. It can thus be achieved that, even in the case of a high building with several floors, hot water is available essentially immediately on each floor. The heat loss can be kept relatively small.

Das Gehäuse 13 des Anschlussstücks 20 ist beispielsweise aus einem geeigneten Metall hergestellt und besitzt eine Bohrung 15, in welche der Einsatz 14 von unten eingesetzt ist. Mit einer Dichtung 18 ist dieser Einsatz 14 gegenüber dem Gehäuse 13 abgedichtet. Mittels einer Mutter 17, welche in die Bohrung 15 eingeschraubt ist, ist der Einsatz 14 lösbar am Gehäuse 13 befestigt. Ist die Mutter 17 aus dem Gehäuse 13 herausgeschraubt, so kann der Einsatz 14 frei nach unten aus dem Gehäuse 13 herausgezogen werden.The housing 13 of the connector 20 is made, for example, of a suitable metal and has a bore 15 into which the insert 14 is inserted from below. With a seal 18, this insert 14 is sealed relative to the housing 13. By means of a nut 17, which is screwed into the bore 15, the insert 14 is releasably secured to the housing 13. Is the mother 17 unscrewed out of the housing 13, the insert 14 can be freely pulled down from the housing 13.

Der Einsatz 14 besitzt einen nach oben ragenden Anschlussstutzen 11, an den das untere Ende des Innenzirkulationsrohres angeschlossen ist. Die Verbindung zwischen dem Anschlussstutzen 11 und dem unteren Ende der Innenzirkulationsleitung 4 kann an sich beliebig sein. Vorzugsweise ist dies eine Schraubverbindung. Denkbar ist aber auch beispielsweise eine Pressverbindung. Der Einsatz 14 ist somit bevorzugt von unten in das Innenzirkulationsrohr 4 eingeschraubt. Der erste Ast 16a des Durchganges 16 verläuft vertikal. Am unteren Ende dieses Astes 16a wird das durchströmende Wasser um 90° Grad umgelenkt und verläuft dann in dem zweiten Ast 16b horizontal in die Rücklaufleitung 4b. Das Steigrohr 3 ist an seinem unteren Ende mit einem nach oben ragenden Anschlussstutzen 10 mit dem Gehäuse 13 verbunden. Der Anschlussstutzen 10 kann für eine Pressverbindung vorgesehen sein.The insert 14 has an upwardly projecting connection piece 11, to which the lower end of the inner circulation tube is connected. The connection between the connecting piece 11 and the lower end of the inner circulation line 4 can be arbitrary per se. This is preferably a screw connection. It is also conceivable, for example, a press connection. The insert 14 is thus preferably screwed from below into the inner circulation tube 4. The first branch 16a of the passage 16 extends vertically. At the lower end of this branch 16a, the water flowing through is deflected by 90 ° degrees and then runs horizontally in the second branch 16b in the return line 4b. The riser 3 is connected at its lower end with an upwardly projecting connection piece 10 with the housing 13. The connecting piece 10 may be provided for a press connection.

Das Innenzirkulationsrohr 3 ist vorzugsweise aus Kunststoff hergestellt und flexibel. An seinem oberen Ende 4a wird das Innenzirkulationsrohr 4 durch das Abschlussstück 25 am oberen Ende 31 des Steigrohres 3 abgestützt. Das Abschlussstück 25 besitzt einen Stützteil 26 und einen Verbindungsteil 27. Der Verbindungsteil 27 besitzt aussenseitig ein hier nicht gezeigtes Schraubgewinde, so dass das Anschlussstück 25 von oben durch die Öffnung 8 in das Ende 4a eingeschraubt werden kann. Der Durchmesser des Verbindungsteils 27 ist etwas grösser als der Innendurchmesser des Innenzirkulationsrohres 4. Beim Einschrauben des Verbindungsteil 27 wird somit das obere Ende 4a etwas gedehnt. Im Verbindungsteil 27 verläuft der genannte Kanal 28, der mit der Querbohrung 29 verbunden ist. Wasser kann somit durch die Querbohrung 29 von zwei Seiten in den Kanal 28 und in diesem nach unten in das Innenzirkulationsrohr 4 gelangen.The inner circulation tube 3 is preferably made of plastic and flexible. At its upper end 4a, the inner circulation pipe 4 is supported by the end piece 25 at the upper end 31 of the riser pipe 3. The end piece 25 has a support part 26 and a connecting part 27. The connecting part 27 has on the outside a screw thread not shown here, so that the connecting piece 25 can be screwed from above through the opening 8 in the end 4a. The diameter of the connecting part 27 is slightly larger than the inner diameter of the inner circulation tube 4. When screwing in the connecting part 27 thus the upper end 4a is slightly stretched. In the connecting part 27, the said channel 28 which is connected to the transverse bore 29 extends. Water can thus pass through the transverse bore 29 from two sides into the channel 28 and in this down into the inner circulation tube 4.

Der Stützteil 26 ist ringförmig ausgebildet und elastisch. Er ist zudem so ausgebildet, dass er in dem in Figur 1 gezeigten eingeführten Zustand elastisch gespannt an der Innenseite des Steigrohres 3 anliegt. Aufgrund dieser Spannung wird das Abschlussstück 25 im Steigrohr 3 fixiert und damit das Innenzirkulationsrohr 3 am oberen Ende 4a gestützt. Mit einer vorbestimmten Kraft kann jedoch das Abschlussstück 25 im Steigrohr 3 nach oben und nach unten verschoben werden. Die Verbindung des Abschlussstückes 25 mit dem Steigrohr 3 ist somit eine reibschlüssige Verbindung. Das Abschlussstück 25 kann somit stufenlos im Steigrohr 3 verschoben werden. In jeder Position ist das Abschlussstück 25 durch die Spannung des Stützteils 26 fixiert.The support member 26 is annular and elastic. He is also trained to be in the in FIG. 1 shown inserted state elastically tensioned on the inside of the riser pipe 3. Due to this tension, the end piece 25 is fixed in the riser pipe 3 and thus the inner circulation pipe 3 is supported at the upper end 4a. With a predetermined force, however, the end piece 25 can be moved in the riser 3 up and down. The connection of the end piece 25 with the riser pipe 3 is thus a frictional connection. The end piece 25 can thus be moved continuously in the riser 3. In each position, the end piece 25 is fixed by the tension of the support member 26.

Das Anschlussstück 25 ist vorzugsweise einstückig aus Kunststoff hergestellt. Grundsätzlich könnten beispielsweise das Stützteil 26 und das Verbindungsteil 27 auch separat hergestellte Teile sein die miteinander verbunden, beispielsweise verschraubt sind. Beim Montieren bildet jedoch das Abschlussstück 25 eine Einheit.The connecting piece 25 is preferably made in one piece from plastic. In principle, for example, the support member 26 and the connecting part 27 could also be separately manufactured parts which are connected to each other, for example screwed. When assembled, however, the end piece 25 forms a unit.

Das obere Ende 31 des Steigrohres 3 ist mit einem Fitting 30, beispielsweise einem Winkelstück mit einem hier nur teilweise gezeigten Leitungsrohr 32 verbunden, das ebenfalls zu einem Verbraucher führen kann.The upper end 31 of the riser pipe 3 is connected to a fitting 30, for example, an elbow with a conduit 32 shown only partially here, which can also lead to a consumer.

Das in der Figur 3 gezeigte Abschlussstück 25' unterscheidet sich von dem oben beschriebenen Abschlussstück 25 dadurch, dass es als oben offene Klammer ausgebildet ist. Das Abschlussstück 25' ist ebenfalls elastisch ausgebildet und kann mit dem Innenzirkulationsrohr 4 vertikal verschoben werden.That in the FIG. 3 shown end piece 25 'differs from the above-described end piece 25 in that it is designed as a top open clip. The end piece 25 'is also elastic and can be moved vertically with the inner circulation tube 4.

Anhand der Figuren 2a bis 2e wird nachfolgend die Montage einer Wasserzirkulationsleitung 1 näher erläutert.Based on FIGS. 2a to 2e the assembly of a water circulation line 1 will be explained in more detail below.

Für die Montage wird zuerst gemäss der Figur 2a das flexible Innenzirkulationsrohr 4 in Richtung des Pfeils 33 von oben in das Steigrohr 3 eingeschoben. Auf das obere Ende 4a des Innenzirkulationsrohres 4 wird gemäss der Figur 2b das Anschlussstück 25 in das Innenzirkulationsrohr 4 eingeschraubt. Auf das Steigrohr 3 wird gemäss Figur 2c der Fitting 30 aufgesetzt.For assembly, first according to FIG. 2a the flexible inner circulation tube 4 inserted in the direction of the arrow 33 from above into the riser 3. On the upper end 4a of the inner circulation tube 4 is according to the FIG. 2b the connector 25 is screwed into the inner circulation tube 4. On the riser 3 is according to Figure 2c the fitting 30 attached.

Nun wird das in das Steigrohr 3 eingezogene Innenzirkulationsrohr 4 gemäss Figur 2d in Richtung des Pfeils 34 beispielsweise um 0,5 m aus der Steigleitung 3 herausgezogen. Das untere Ende des Innenzirkulationsrohres 4 wird nun mit dem Einsatz 14 dicht verbunden. Schliesslich werden gemäss der Figur 2e der Einsatz 14 und mit diesem das Innenzirkulationsrohr 4 und das Abschlussstück 25 in Richtung des Pfeils 35 nach oben geschoben. Das Abschlussstück 25 gleitet hierbei im Steigrohr 3 nach oben. Schliesslich wird der Einsatz 14 mit dem Gehäuse 13 des Anschlussstücks 20 verbunden. Die Montage ist damit abgeschlossen. Sie kann wie erwähnt von einem einzigen Monteur durchgeführt werden. Das Auswechseln des Innenzirkulationsrohres 4 ist ebenfalls sehr einfach und kann ebenfalls von einem Monteur allein durchgeführt werden.Now the drawn into the riser 3 inner circulation pipe 4 is according Figure 2d in the direction of the arrow 34, for example, pulled by 0.5 m from the riser 3. The lower end of the inner circulation tube 4 is now sealed to the insert 14. Finally, according to the FIG. 2e the insert 14 and with this the inner circulation tube 4 and the end piece 25 pushed in the direction of the arrow 35 upwards. The end piece 25 slides in the riser 3 upwards. Finally, the insert 14 is connected to the housing 13 of the connecting piece 20. The assembly is complete. As mentioned, it can be carried out by a single fitter. The replacement of the inner circulation tube 4 is also very simple and can also be performed by a fitter alone.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
WasserzirkulationsleitungWater circulation pipe
22
Zulaufleitungsupply line
33
Steigrohrriser
44
InnenzirkulationsrohrInternal circulation pipe
4a4a
Oberes EndeTop end
4b4b
RücklaufleitungReturn line
55
Gebäudebodenbuilding floor
66
T-StückTee
77
Leitungmanagement
88th
Öffnungopening
99
Erster AnschlussstutzenFirst connection piece
1010
Zweiter AnschlussstutzenSecond connection piece
1111
Dritter AnschlussstutzenThird connection piece
1212
Vierter AnschlussstutzenFourth connection piece
1313
Gehäusecasing
1414
Einsatzcommitment
1515
Bohrungdrilling
1616
Durchgangpassage
16a16a
Erster AstFirst branch
16b16b
Zweiter AstSecond branch
1717
Muttermother
1818
Dichtungpoetry
1919
Durchgangpassage
2020
Anschlussstückconnector
2121
Unterseitebottom
2525
Abschlussstückterminating piece
2626
Stützteilsupporting part
2727
Verbindungsteilconnecting part
2828
Kanalchannel
2929
QuerborungQuerborung
3030
Fittingfitting
3131
Oberes Ende des SteigrohresUpper end of the riser
3232
LeitungsrohrPipeline
3333
Pfeilarrow
3434
Pfeilarrow
3535
Pfeilarrow

Claims (10)

Abschlussstück für ein schlauchförmiges Innenzirkulationsrohr (4), das in einem Steigrohr (3) angeordnet ist und mit diesem eine Wasserzirkulationsleitung (1) für eine Brauchwasser- oder Heizwasserversorgungsanlage bildet, mit einem Verbindungsteil (27) mit dem das Abschlussstück (25) mit dem oberen Ende (4a) des Innenzirkulationsrohres (4) verbindbar ist und mit einem Stützteil (26), mit dem das Abschlussstück (25) am Steigrohr (3) abstützbar ist, dadurch gekennzeichnet, dass der Stützteil (26) als Klemmteil ausgebildet ist, der im Steigrohr (3) gleitbar verschiebbar ist.End piece for a tubular inner circulation pipe (4), which is arranged in a riser pipe (3) and forms with this a water circulation line (1) for a hot water or heating water supply system, with a connecting part (27) with which the end piece (25) with the upper End (4a) of the inner circulation tube (4) is connectable and with a support member (26) with which the end piece (25) on the riser pipe (3) can be supported, characterized in that the support part (26) is designed as a clamping part which in Riser (3) is slidably displaceable. Abschlussstück nach Anspruch 1, dadurch gekennzeichnet, dass der Stützteil (26) als federelastisches Spannteil ausgebildet ist und gegen die Innenseite des Steigrohres (3) spannbar ist.End piece according to claim 1, characterized in that the support part (26) is designed as a resilient clamping part and against the inside of the riser (3) can be tensioned. Abschlussstück nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Stützteil (26) als elastische Haltelasche und insbesondere als Ring ausgebildet ist.End piece according to claim 1 or 2, characterized in that the support part (26) is designed as an elastic retaining tab and in particular as a ring. Abschlussstück nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Stützteil (26) als Ring oder als offene Klammer ausgebildet ist.End piece according to one of claims 1 to 3, characterized in that the support part (26) is designed as a ring or as an open clamp. Abschlussstück nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Verbindungsteil (27) als schraubbarer Teil ausgebildet ist, der in das obere Ende (4a) des Innenzirkulationsrohres (4) einschraubbar ist.End piece according to one of claims 1 to 4, characterized in that the connecting part (27) is designed as a screwable part which can be screwed into the upper end (4a) of the inner circulation tube (4). Abschlussstück nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Verbindungsteil (27) einen Kanal (28) aufweist, durch den Wasser in das Innenzirkulationsrohr (4) fliessen kann.End piece according to one of claims 1 to 5, characterized in that the connecting part (27) has a channel (28) through which water can flow into the inner circulation tube (4). Abschlussstück nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Verbindungsteil (27) eine Querbohrung (29) aufweist, durch die von aussen Wasser in das Innenzirkulationsrohr (4) fliessen kann.End piece according to one of claims 1 to 6, characterized in that the connecting part (27) has a transverse bore (29) through which water can flow from the outside into the inner circulation tube (4). Wasserzirkulationsleitung mit einem Abschlussstück nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, das sie an einem unteren Ende an ein Anschlussstück (20) angeschlossen ist, dass einen Einsatz (14) aufweist, der mit dem unteren Ende des Innenzirkulationsrohres (4) verbunden ist.Water circulation pipe with a closure piece according to one of claims 1 to 7, characterized in that it at a lower end to a connecting piece (20) is connected, having an insert (14) which is connected to the lower end of the inner circulation tube (4). Wasserzirkulationsleitung nach Anspruch 8, dadurch gekennzeichnet, dass der Einsatz (14) bei der Montage mit dem Innenzirkulationsrohr (4) nach unten aus einem Gehäuse (13) des Anschlussstückes (20) ausziehbar ist.Water circulation line according to claim 8, characterized in that the insert (14) during assembly with the inner circulation tube (4) downwardly from a housing (13) of the connecting piece (20) is extendable. Verfahren zum Montieren einer Wasserzirkulationsleitung nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass die Innenzirkulationsleitung (4) von oben in das Steigrohr (3) eingezogen wird, dass das Innenzirkulationsrohr (4) mit dem aufgesetzten Abschlussstück (25) nach unten um eine vorbestimmte Länge aus dem Gehäuse (13) des Anschlussstückes 20 nach unten herausgezogen wird, anschliessend der Einsatz (14) auf das untere Ende des Innenzirkulationsrohres (4) aufgesetzt wird und dass schliesslich das Innenzirkulationsrohr (4) im Steigrohr (3) nach oben geschoben und der Einsatz (14) am Gehäuse (13) des Anschlussstücks (20) befestigt wird.Method for mounting a water circulation line according to claim 8 or 9, characterized in that the inner circulation line (4) is pulled from above into the riser (3) that the inner circulation tube (4) with the attached end piece (25) down by a predetermined length from the housing (13) of the connecting piece 20 is pulled down, then the insert (14) is placed on the lower end of the inner circulation tube (4) and that finally the inner circulation tube (4) in the riser (3) pushed up and the use (14) is secured to the housing (13) of the fitting (20).
EP20070405325 2007-11-13 2007-11-13 Water circulation pipe with a connecting piece and method for assembling such a water circulation pipe Active EP2060855B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20070405325 EP2060855B1 (en) 2007-11-13 2007-11-13 Water circulation pipe with a connecting piece and method for assembling such a water circulation pipe
NO20083972A NO20083972L (en) 2007-11-13 2008-09-18 End piece of a hose-shaped intercircuit pipe, water circulation line with such an end piece and method for mounting such a water circulation line.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070405325 EP2060855B1 (en) 2007-11-13 2007-11-13 Water circulation pipe with a connecting piece and method for assembling such a water circulation pipe

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EP2060855A1 true EP2060855A1 (en) 2009-05-20
EP2060855B1 EP2060855B1 (en) 2014-07-09

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2385316A1 (en) * 2010-05-08 2011-11-09 CEC-System SA Recirculation conduit for recirculating a fluid in a conduit system and method for providing a recirculation conduit
EP3312517A1 (en) * 2016-10-18 2018-04-25 Hammardal Bygg & VVS AB System for hot water circultion and method therefore

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0299471A2 (en) 1987-07-16 1989-01-18 Heinrich Holztrattner Liquid respectively gas cycle, particularly for a hot water or a heating water system
DE4331194C1 (en) * 1993-09-14 1994-10-06 Braas Gmbh Double-walled pipeline system
DE29920286U1 (en) 1999-11-18 2000-02-10 Hage Fittings Gmbh & Co Kg End piece for a hot water circulation pipe
EP0997690A2 (en) * 1998-10-27 2000-05-03 Gebr. Kemper GmbH + Co. KG Pipe system for liquids, esp. for sanitary hot water circuits in buildings
DE10054822A1 (en) * 2000-11-04 2002-05-08 Wolfgang Schmitter Press fitting comprises coaxial pipes with conventional press collars at their ends, inner pipe carrying hot water and outer central heating water
WO2006109080A2 (en) * 2005-04-14 2006-10-19 Lee Mckeith Central heating system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0299471A2 (en) 1987-07-16 1989-01-18 Heinrich Holztrattner Liquid respectively gas cycle, particularly for a hot water or a heating water system
DE4331194C1 (en) * 1993-09-14 1994-10-06 Braas Gmbh Double-walled pipeline system
EP0997690A2 (en) * 1998-10-27 2000-05-03 Gebr. Kemper GmbH + Co. KG Pipe system for liquids, esp. for sanitary hot water circuits in buildings
DE29920286U1 (en) 1999-11-18 2000-02-10 Hage Fittings Gmbh & Co Kg End piece for a hot water circulation pipe
DE10054822A1 (en) * 2000-11-04 2002-05-08 Wolfgang Schmitter Press fitting comprises coaxial pipes with conventional press collars at their ends, inner pipe carrying hot water and outer central heating water
WO2006109080A2 (en) * 2005-04-14 2006-10-19 Lee Mckeith Central heating system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2385316A1 (en) * 2010-05-08 2011-11-09 CEC-System SA Recirculation conduit for recirculating a fluid in a conduit system and method for providing a recirculation conduit
EP3312517A1 (en) * 2016-10-18 2018-04-25 Hammardal Bygg & VVS AB System for hot water circultion and method therefore

Also Published As

Publication number Publication date
NO20083972L (en) 2009-05-14
EP2060855B1 (en) 2014-07-09

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