EP1701097A2 - Manifold esp. for heating installations - Google Patents

Abstract

The pipe manifold (1), especially for heating systems, has several pipe connectors (42,43) provided on the manifold housing (10), each having an encompassing groove in its outer circumference close to the end furthest from the manifold. Intermediate pieces (51-54) on the manifold side each have a pipe section with an encompassing groove in its outer circumference close to the end nearest the manifold. Each pipe connector and associated intermediate piece are tightly but releasably interconnectable by means of a grooved pipe coupling (7).

Description

The present invention relates to a manifold, in particular for heating systems, with an elongated box-shaped manifold housing having a flow chamber and a return chamber, wherein on the manifold housing a plurality of terminals are provided, of which alternately in fluid communication with the first one and the return chamber and at the intermediate pieces are connectable, which are designed at their distributor-side end to match the terminals and at the other end in each case a pipe can be connected.

Out EP 0 415 260 B1 is a pipe distributor of the type mentioned above, which is primarily intended for large-scale systems. This distributor consists of basic housing units, several pre-assembled permanently fixed to the housing outlet spigot of the same nominal size and connected to this outlet spigots each pipe connections with a connection for connecting fittings standardized dimensions, the pipe attachments have a dependent on the opening cross-section of their respective connection height, which connect to it Brings fittings to the same average spindle height. Furthermore, it is provided in this distributor that the outlet nozzle as industrial flanges with the same height, so as special flanges with a smaller outer diameter than that DIN standard flanges of the same nominal size are formed and the pipe attachments foot also have corresponding special flanges and on the other side DIN standard flanges.

Although this known pipe distributor is variably usable with regard to the diameter of the pipes to be connected, the production of flange connections requires a relatively large amount of work, since each flange joint, distributed over its circumference, requires a plurality of screws and optionally also nuts, which must be attached and tightened in each case. This causes relatively long assembly times.

Out DE 30 12 854 A1 is another manifold for flow and return lines, especially for hot water heating, with a longitudinally divided by an inner wall into a flow chamber and a return space elongated distribution housing and with out of the flow chamber and the return chamber outward pipe connections known. In this pipe distributor it is provided that the pipe connections have uniform length and uniform diameter and are designed for releasably anchoring prefabricated different reducers of predetermined length. More concretely, the pipe fittings are female threaded sleeves welded to the manifold body, and the reducers have male threaded portions of different diameters at both ends and a conical reducing portion and a land for a tool therebetween.

Also, this manifold is variable in terms of the diameter of the pipes to be connected, However, the production of the pipe connections and the reducers requires due to the internal thread and external thread to be mounted on a high production cost, which leads to a correspondingly high cost of the manifold.

Out DE 200 10 701 U1 is another pipe distributor, which is also provided in particular for heating systems known. This is a manifold with an elongated box-shaped manifold housing with two chambers, wherein an upper and a lower chamber are arranged one above the other and separated by a partition and wherein the upper side of the horizontally aligned in operation distributor housing in a grid spacing a plurality of pipes, of which alternately enters one of the upper chamber and one with the lower chamber in fluid communication, can be connected. Further, it is provided here that in the distributor housing in a distance corresponding to the double grid spacing pipe sections are sealingly installed, which extend from the upper wall of the distributor housing through the upper chamber down through the partition into the lower chamber and at its upper end to the Connection of the pipes are tightly closed. For connection of the pipes openings of suitable size and location at the upper end of the pipe sections and / or in the upper wall of the distributor housing can be attached. The attachment of the openings can be done for example by plasma cutting.

Also, this manifold is used variably in terms of the diameter of the pipes to be connected, but also here a relatively high workload is required in particular for attaching the openings. In addition, for attaching the openings a suitable tool, eg. As a plasma cutting device needed.

For the present invention, the object is to provide a manifold of the type mentioned above, which avoids the disadvantages set out above and has a simple and cost-effective production and low installation costs a high degree of flexibility with respect to different diameters to be connected to the manifold piping.

• daß die Anschlüsse am Verteilergehäuse als Rohrstutzen mit jeweils einer nahe ihrem verteilerfernen Ende umlaufenden Nut in ihrem Außenumfang ausgeführt sind,
• daß die Zwischenstücke verteilerseitig jeweils einen Rohrabschnitt mit jeweils einer nahe seinem verteilerseitigen Ende umlaufenden Nut in seinem Außenumfang aufweisen und
• daß jeweils ein Rohrstutzen und ein Zwischenstück mittels einer Nutrohrkupplung dicht und lösbar miteinander verbindbar sind.

The solution of this object succeeds according to the invention with a manifold of the type mentioned, which is characterized

• in that the connections on the distributor housing are designed as pipe sockets, each with a circumferential groove in its outer circumference, near its distributor-remote end,
• that the intermediate pieces distributor side each have a pipe section, each with a circumferential groove near its distributor end in its outer periphery and
• that in each case a pipe socket and an intermediate piece by means of a Nutrohrkupplung are tightly and detachably connected to each other.

Both the pipe socket, which form the connections, as well as to be connected to the pipe socket spacers are technically simple components, since they must be provided for the preparation of the compound at its connecting end only with a circumferential groove in its outer periphery. The provided with a respective groove pipe socket on the one hand and spacers on the other hand by means of Nutrohrkupplung very quickly and easily and thereby time and cost saving connected to each other, resulting in a low installation cost and thus a means faster assembly progress. In comparison to the attachment of threads or for producing cutouts and / or welds, the attachment of grooves and a grooved pipe coupling is much faster to accomplish. At the same time, a high degree of flexibility is maintained, because even on site at the construction site, the craftsman working there can select and determine which intermediate piece is to be attached to which pipe socket, in order to obtain a suitable transition to the continuing pipelines. The design of the manifold with Nutrohrkupplungen is independent of the shape and location of the flow chamber and return chamber in the manifold housing. The two chambers mentioned can be arranged side by side with a vertical partition wall or one above the other with a horizontal partition wall. The partition can be made both wavy and flat.

In order to prefabricate the manifold as simple and inexpensive, without it being necessary to determine the exact connection dimensions for the subsequent installation situation, it is proposed that of the terminals on the distributor housing several or all are uniform with each other and that different spacers are provided. In a heating circuit distributor, e.g. all connections for the various heating circuits advantageously be carried out uniformly with each other; the boiler connections of the distributor may be different, in particular larger, or may be the same as the heating circuit connections.

Preferably, it is further provided that the grooves are rolling grooves. Rolling grooves are relatively easy to manufacture and also offer the advantage that they do not lead to a material weakening, as in the case of grooved grooves the case would be. In addition, when producing a rolling groove, the material into which the groove is introduced, even cold worked, which advantageously increases its mechanical strength. In the case of components which are not too large, it is also possible to install the rolling grooves locally on a construction site by means of transportable roll groove devices on the components which are to be connected to one another.

Next, the invention proposes that each intermediate piece is designed at its distributor remote end with a standard connection thread or a standard connection flange. In this design, the manifold according to the invention can also be used in such systems in which the further-running pipelines on the distributor side have standard connection threads or connection flanges. Of course, there is also the possibility of connecting the continuing pipelines by means of grooved pipe couplings with the intermediate pieces, which is particularly advantageous in the construction of new facilities.

To achieve a reduction in diameter from the connection to the manifold to the secondary pipeline, the intermediate piece may be a reducer whose distributor remote end has a smaller nominal diameter than its distributor near end.

Alternatively, instead, the grooved pipe coupling may be a reducing coupling. This embodiment has the specific advantage that it manages with a smaller overall length, which is particularly advantageous in cramped installation conditions for the manifold.

Furthermore, there is the possibility that a valve is integrated in the intermediate piece. In this way, the used by the intermediate piece space used at the same time for the accommodation of a valve required in most cases anyway.

Alternatively, it is proposed that a valve is flanged with the intermediate piece. In this embodiment, standard valves can be used.

In particular, to achieve a proper plant image is further provided that the flanged with a valve spacers are designed with such a length that come in the assembled state of the spacers and valves, the spindle axes of the valves lie on a line parallel to the distributor housing.

For the pipe manifold according to the invention is further preferably provided that each Nutrohrkupplung a mutually facing ends of pipe socket and pipe section of the intermediate piece sealing ring and at least two clamp-like the mutually facing ends of pipe socket and pipe section together with sealing ring encompassing, with radially inwardly facing webs into the grooves engaging, arcuate coupling parts, which are detachably connectable to each other via screws or a clamping lever comprises. A so executed Nutrohrkupplung requires only a few items that are quickly and easily assembled to the coupling and secured to the pipe socket and the adapter. In a version with clamping lever can even be completely dispensed with screws and screwing and it can be done purely manual fastening and loosening the Nutrohrkupplung.

Finally, it is preferably provided for the pipe manifold according to the invention, that the distributor housing made of welded together steel sheet and / or steel profile blanks There is that the pipe socket are welded to the distributor housing steel pipe sections and that the intermediate pieces in one piece from steel or from each other welded steel parts. In this way, a relatively inexpensive material can be used for the manifold and it is ensured sufficient stability and durability. For particularly high demands on the corrosion resistance, the parts of the manifold can also be performed with a coating, such as galvanizing or plastic coating.

Figur 1

einen Rohrverteiler in Ansicht,

Figur 2

den Rohrverteiler aus Figur 1 in Draufsicht und

Figur 3

zwei Anschlüsse des Rohrverteilers mit jeweils einem Zwischenstück, in Ansicht.

In the following an embodiment of the manifold according to the invention will be explained with reference to a drawing. The figures in the drawing show:

FIG. 1

a manifold in view,

FIG. 2

the manifold of Figure 1 in plan view and

FIG. 3

two connections of the manifold, each with an intermediate piece, in view.

The pipe distributor 1 according to FIG. 1 comprises an elongate, box-shaped distributor housing 10, which runs horizontally in its insertion position, as shown in FIG. The distributor housing is preferably rectangular or square when viewed in cross-section. The interior of the distributor housing 10 is divided by a not visible in Figure 1 partition into two chambers, namely a flow chamber and a return chamber.

On the upper wall 11 of the distribution housing 10 in FIG. 1, several, in this case eight, connections in the form of pipe sockets 42 and 43 are attached. Inside the distributor housing 10 while the pipe socket 42 are each connected fluidly to the flow chamber and the pipe socket 43 each with the return flow chamber.

The leftmost in Figure 1 arranged two first pipe socket 42 and 43 have a large diameter and are used to connect, for example, a boiler flow and return of a heating system.

The following six further pipe sockets 42, 43 are identical to each other, that is, designed with the same diameter and the same length. They serve e.g. for connecting several heating circuits of a heating system.

All pipe sockets 42, 43 are firmly and tightly connected to the upper wall 11 of the distributor housing 10, usually welded.

With each pipe socket 42, 43, an intermediate piece 51, 52, 53 or 54 is connected in each case. The connection between the spacers 51 to 54 on the one hand and the pipe socket 42, 43 on the other hand takes place here by means of a respective Nutrohrkupplung. 7

For the connection by means of the Nutrohrkupplungen 7, the pipe socket 42, 43 and the spacers 51 to 54 each need at their connection end a circumferential groove in the outer circumference, in which engage the Nutrohrkupplungen 7 in the mounted state, thus ensuring a sufficiently strong mechanical connection. A part of the Nutrohrkupplung 7 forming sealing ring provides the necessary tightness of the connection. The Nutrohrkupplungen 7 are very quickly attached and released again when needed.

As FIG. 1 illustrates, the intermediate pieces 51 to 54 are configured differently. The two arranged on the left in Figure 1 spacers 51 for the boiler flow and return have a large and constant over its length diameter, which fits to the diameter of the associated pipe socket 42 and 43.

The two following to the right intermediate pieces 52 have a smaller, also constant over the length diameter, which fits to the associated two pipe sockets 42 and 43.

Although the two intermediate pieces 53 following to the right have the same diameter at their distribution-side end as the two intermediate pieces 52 lying to the left, they are conical in their course and therefore have a smaller diameter at their distributor-remote end.

The two rightmost spacers 54 are similar to the intermediate pieces 53 executed, but with an even greater taper. As a result, the distributor remote end of the intermediate pieces 54 is brought to an even smaller diameter than is the case with the adjacent intermediate pieces 53.

The first seen in Figure 1 from the first six pipe sockets 42, 43 are identical to each other, but can be connected to different spacers 52 to 54 in order to come to a suitable diameter for the not shown here further pipelines. The diameter of the pipes to be connected must be advantageous in the manufacture of the distributor housing 10 is not yet known; rather, you can still up the construction site during installation of the manifold 1 each matching adapter 52 to 54 selected and connected in the required position with the associated pipe socket 42 and 43 quickly and easily by means of Nutrohrkupplungen 7.

Further, in the embodiment shown in Figure 1 with the spacers 51 to 54 valves 61 to 64 are connected, here flanged over flanges 51 ', 52', 53 'and 54'. The valves 61 to 64 have a different length depending on their nominal diameter. In order nevertheless to achieve a position of all the valve spindles of the valves 61 to 64 on a straight line parallel to the upper wall 11 of the distributor housing 10, the intermediate pieces 51 to 54 are designed with correspondingly different lengths. In this case, the intermediate pieces with the larger diameter are shorter and the intermediate pieces with the smaller diameter at the distributor remote end longer designed to compensate for the opposite differences in length of the valves 61 to 64.

At the bottom of the distributor housing 10 are connected to the lower wall 12 here still two feet 80, which serve to install the pipe manifold 1 on a floor. In addition, two lower pipe stubs 81 are provided on the distributor housing 10 on the underside, which serve for example for emptying the two chambers of the distributor housing 10.

The dash-dotted line 82 shows the outer boundary of an insulating material which surrounds the distributor housing 10 and protects against energy losses in the case of a heating pipe distributor.

Figure 2 shows the pipe manifold 1 of Figure 1 in plan view, in which case the upper wall 11 is "transparent". In this way, the lying in the interior of the distributor housing 10 partition 13 is visible, which here has a wave-shaped course. This wave-shaped partition 13 divides the interior of the distributor housing 10 in the already mentioned flow chamber 2 on the one hand and return chamber 3 on the other.

As can now be clearly seen in FIG. 2, the pipe sockets 42 all open into the flow chamber 2, while the pipe sockets 43 all open into the return flow chamber 3. Due to the undulating course of the partition wall 13, the pipe sockets 42, 43 can be arranged on a single straight line on the upper side of the distributor housing 10.

With the pipe sockets 42, 43, the intermediate pieces 51 to 54 are again connected, while in Figure 2, the valves 61 to 64 are omitted. Thus, in FIG. 2, the viewer's gaze falls on the connecting flanges 51 'to 54' of the intermediate pieces 51 to 54.

The dash-dotted line 82 again indicates the outer contour of an insulating body surrounding the distributor housing 10.

FIG. 3 shows on the left a pipe stub 42 which is to be connected to an intermediate piece 51. Right in Figure 3, a raw pipe 43 is shown, which is to be connected to an intermediate piece 54.

The pipe sockets 42, 43 are connected to the upper wall 11 of the distributor housing 10, not shown otherwise tightly connected. Near their upper end have the pipe socket 42, 43 a circumferential groove 40 in its outer circumference, which is designed here as a rolling groove.

In the same way, in each case the end portion of the intermediate pieces 51, 54 facing the raw pipe 42, 43 is provided with a respective groove 50 running around in the outer circumference. Again, the groove 50 is preferably a rolling groove.

The connection between the pipe socket 42 and the intermediate piece 51 and between the pipe socket 43 and the intermediate piece 54 by means of one not yet attached Nutrohrkupplung, the one ends of pipe socket 42, 43 and spacer 51, 54 bridging sealing ring and at least two arcuate coupling parts with engaging in the grooves 40 and 50 webs. By means of one or more screws or a clamping lever Nutrohrkupplung is tightened.

At the top of FIG. 3, the standardized connection flange 51 ', 54' forming part of the intermediate pieces 51 and 54 is visible. Here also the different axial length of the intermediate pieces 51, 54 becomes clear. The smaller diameter intermediate piece 54 is longer than the larger diameter intermediate piece 51 to compensate for the smaller length of a smaller diameter valve compared to the larger length of a larger diameter valve so that in the assembled state of the valves 61 to 64 (see Figure 1) whose valve spindles lie on a parallel to the distribution housing 10 line.

LIST OF REFERENCE NUMBERS

character description 1 Total manifold 10 distributor housing 11 upper wall of 10 12 bottom wall of 10 13 Partition in 10 2 lead chamber 3 Return chamber 40 groove 42 Pipe socket to 2 (connections) 43 Pipe socket to 3 (connections) 50 groove 51 - 54 spacers 51 '- 54' flanges 61 - 64 valves 7 Nutrohrkupplungen 80 stands 81 lower pipe socket 82 insulator

Claims (11)

Pipe distributor (1), in particular for heating systems, with an elongated box-shaped distributor housing (10) with a flow chamber (2) and a return chamber (3), wherein on the distributor housing (10) a plurality of terminals (42, 43) are provided, of which alternately one each with the flow chamber (2). and one is in fluid communication with the return chamber (3) and connectable to the intermediate pieces (51-54), which are designed at their distributor-side end to match the connections (42, 43) and at the other end of which a respective pipeline can be connected,
characterized, - That the connections (42, 43) on the distributor housing (10) as a pipe socket (42, 43) are each designed with a near its distributor remote end circumferential groove (40) in its outer periphery, - That the intermediate pieces (51 - 54) on the distributor side each having a pipe section, each with a near its distributor-side end circumferential groove (50) in its outer periphery and - That each a pipe socket (42, 43) and an intermediate pieces (51 - 54) by means of a Nutrohrkupplung (7) are tightly and detachably connected to each other. Pipe distributor according to Claim 1, characterized in that several or all of the connections (42, 43) on the distributor housing (10) are uniform with one another and that in each case different intermediate pieces (51-54) are provided. Pipe distributor according to claim 1 or 2, characterized in that the grooves (40, 50) are rolling grooves. Pipe distributor according to Claim 1, 2 or 3, characterized in that each intermediate piece (51-54) is designed with a standard connecting thread or a standard connecting flange (51 '- 54') at its distributor remote end. Pipe distributor according to one of the preceding claims, characterized in that the intermediate piece (51-54) is a reducer whose distributor remote end has a smaller nominal diameter than its distributor-near end. Pipe distributor according to one of claims 1 to 4, characterized in that the Nutrohrkupplung (7) is a Reduzierkupplung. Pipe distributor according to one of claims 1 to 6, characterized in that a valve (61-64) is integrated in the intermediate piece (51-54). Pipe distributor according to one of claims 1 to 6, characterized in that a valve (61-64) is flanged with the intermediate piece (51-54). Pipe distributor according to claim 7 or 8, characterized in that the valve (61-64) respectively in such axial position is integrated in the intermediate piece (51-54) or that the intermediate pieces (51-54) flanged with a valve (61-64) are designed with such a length that in the assembled state the intermediate pieces (51-54) and the valves (61-64), the spindle axes of the valves (61-64) come to rest on a line parallel to the distributor housing (10). Pipe distributor according to one of the preceding claims, characterized in that each grooved pipe coupling (7) has a sealing ring which overlaps the mutually facing ends of pipe stubs (42, 43) and pipe section of the intermediate piece (51-54) and at least two clamp-like ends of pipe stubs (FIG. 42, 43) and pipe section of the intermediate piece (51-54) including sealing ring encompassing, with radially inwardly pointing webs in the grooves (40, 50) engaging, arcuate coupling parts which are releasably connected to each other via screws or a clamping lever comprises. Pipe distributor according to one of the preceding claims, characterized in that the distributor housing (10) consists of welded steel sheet and / or steel profile blanks, that the pipe stubs (42, 43) with the distributor housing (10) welded steel pipe sections and that the intermediate pieces (51 - 54) in one piece of steel or of welded individual parts made of steel.

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