DE3026590A1 - Hot water underfloor heating collector and distributor box - has two shells welded to partition and internally threaded connectors welded on - Google Patents

Abstract

The combined supply distributor and return flow collector (1) for a hot water under floor heating system is the shape of an elongated rectangular box made from steel sheet. It has two compartments (3,4) divided by a partition (2) secured between the out-turned flanges (7,8) of a trough shaped base and top (5,6). These are welded together. Sets of connections for water distributor tubes are formed by internally threaded collars (15,16) secured in openings in the ends and sides. These collars have rings projecting from one end, used for welding in the respective openings.

Description

- 3 - 5226

Dipl.-Ing. Dieter Braun, 8750 Aschaffenburg

Combined flow distributor and return collector, Especially for hot water underfloor heating

The invention relates to a combined flow distributor and return collector, in particular for Varmwaseer underfloor heating systems, with a distributor housing made of sheet steel, which is divided into a flow chamber and a return chamber by a welded partition and closed at the end by a welded housing cover, with welded threaded pipe sockets for the connection of flow lines and return lines as well as at least one welded-in threaded pipe socket for the connection of a flow-inflow line and a return-return line.

Flow distributors and return collectors are used in heating systems, especially in hot water underfloor heating systems, but also in heat pump systems, to connect several flow lines to a common flow-inflow line and to connect their associated return lines to a common return-return line. Venn the flow distributor and the return collector are separated

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are carried out, these consist essentially in each case from a piece of pipe into which the threaded pipe socket for the connection of the flow lines or the return lines are welded. In this version, the flow distributors and the return collectors are proportionate simply structured and therefore easy to manufacture workpieces; the space requirement is because of this However, the line costs incurred are very high. In addition, extensive work is required for the connection of the lines required at the construction site, which can only partially be replaced by prefabrication.

About the work and management expenses as well as the space requirements It is known to reduce combined flow manifolds and to use return collectors of the type mentioned above. These consist, for example, of one Rectangular tube, which is divided into a flow chamber and a return chamber by a horizontal partition is, with one half of the threaded pipe socket only opens through the outer wall into the lower chamber, while the other half of the pipe socket through a housing wall and the partition wall are guided through to the upper chamber. The manufacturing effort for this known combined flow distributor and return collector is considerable, especially for welding the partition wall and the threaded pipe sockets · The ones used in this process Welding process with the addition of a welding electrode or a welding wire, for example in the inert gas welding process, often lead to inadequate, in particular leaky welds.

The object of the invention is therefore to provide a combined Flow distributors and return collectors of the aforementioned Way of creating that with relatively

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with little effort and time is to produce a All welds are of high quality and require little space.

This object is achieved according to the invention in that the flow chamber and the return chamber each through a housing half-shell is enclosed, the longitudinal edges of which are angled outwards to form longitudinal flanges, that the longitudinal flanges with the edge in between the partition wall are connected by resistance welding, and that the threaded pipe socket on the inside of the half-shells at the edges of the punched holes by resistance welding are.

With the resistance welding of the outwardly protruding longitudinal flanges and the partition wall edges in between a high-quality welded joint can be produced with little manufacturing effort, which also can be welded very quickly. It has surprisingly been shown that resistance welding of three sheet metal parts lying on top of one another with high quality of the weld seam, in particular more reliable Tightness, can be carried out.

Since the threaded pipe sockets are no longer pushed through the housing wall, what the welding by means of a fillet weld, but lie against the inside of the housing wall in the form of threaded rings, Resistance welding is also possible here, which delivers significantly better results and works quickly can be performed. Reduced by the arrangement of the threaded rings inside the flow chamber or return chamber the rough requirements are significantly increased.

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In a preferred embodiment of the invention concept it is provided that the housing cover has a circumferential have raised edge that is flush with the edge of the housing half-shell and the Partition wall closes and is welded to this at the flush outer edge.

The housing covers are used after the distributor housing, which is open at the end, is initially in any Length and cut to the desired length. For welding the housing cover it is particularly favorable that the sheet metal edges to be welded, namely the raised edge of the housing cover and the front edges of the housing half-shell and the partition wall are flush with one another and thus can be welded to one another in a particularly simple manner at their outer edge, in particular by fusion welding.

It is particularly advantageous if the partition wall is vertical to be arranged and the threaded pipe sockets on the To be arranged underside of the flow chamber and the return chamber on both sides of the partition. This gets a particularly space-saving design of the combined flow distributor and return collector with the lines connected to it.

In a further development of the concept of the invention, it is provided that the internal thread rings forming the threaded pipe sockets on their end face facing the housing wall have a protruding welding edge. This will enables particularly good, above all tight, resistance welding.

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In a further development of the concept of the invention, it is provided that at least the internal threaded rings for the flow and return lines each one from the ring face have projecting centering collar which protrudes into the punched hole. With this centering collar, the Internally threaded rings centered in the associated punched hole before welding, which simplifies the production process and is accelerated, since no separate alignment of the internal thread rings is required. aside from that the centering collars of the internal threads, which protrude to the outside of the housing, offer the possibility for the Leak test to connect a pipe socket in such a way that also the weld between the internal threaded ring and the housing wall is checked for leaks.

The invention is illustrated below using an exemplary embodiment explained in more detail, which is shown in the drawing. It shows:

1 shows a combined flow distributor and return collector in a view from below, FIG. 2 shows a section along the line II-II in FIG. 1, Fig. 3 shows a section along the line HI-III in Fig. 2 and

Fig. K - 6 internal thread rings to be welded in section.

The combined flow distributor and return collector shown in FIGS. 1-3 is intended, for example, for hot water underfloor heating. It has a distributor housing 1 made of sheet steel. A vertical partition 2 divides the distributor housing 1 into a flow chamber 3 and a return chamber k, each of which is formed by an elongated, trough-shaped housing half-shell

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or 6 are enclosed on the outside. The longitudinal edges of the housing half-shells 5 »6" are to form longitudinal flanges 7 »8 angled outwards. The longitudinal flanges 7f 8 are each with the intermediate edge of the Partition wall 2 connected by electrical resistance roller welding.

At the two front ends of the elongated distributor housing 1 is the flow chamber 3 and the return chamber 4 each closed by a housing cover 9, which has a circumferential raised edge 10 which is flush with the edge of the at the end face Housing half-shell 5 or 6 and the partition 2 closes and is welded to these at the outer edge by a weld 11, which for example is made in a fusion welding process.

At the bottom of the flow chamber 3 and .the return chamber 4 are internal threaded rings 12 by resistance welding welded on. As can be seen in detail from FIG. 4, the internally threaded rings 12 instruct Their end face facing the housing wall has a protruding welding edge 13. One on the ring face projecting centering collar 14 engages in an associated punched hole 15 on the underside of the housing. The internal threaded rings 12 form the threaded pipe sockets for the connection of (not shown) Flow lines and return lines, with each an internally threaded ring 12 of the flow chamber 3 and an internally threaded ring 12 of the return chamber 4 eu a heating circuit belong.

In one of the two housing covers 9 of the flow chamber is to connect a flow inflow line to the

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An internally threaded ring 16 (FIG. 5) is welded onto the inside of a punched hole 15, which ring likewise has a protruding welding edge 13 on its end face. In a corresponding Veise an internally threaded ring 16 is welded to an end wall of the return chamber h on the inside of a punched hole 15 and forms a connection for a return flow line. On the upper side of the two chambers 3 »^ a smaller internal threaded ring 17 (Fig. 6) is welded from the inside to a punched hole 15 which forms a connection for a vent. The internally threaded ring 17 is beveled on its end face to form a protruding welding edge 13.

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Claims (4)

302659Q 5226 Dipl "-Ing. Dieter Braun, 875o Aschaffenburg Combined flow distributor and return collector, especially for hot water underfloor heating Patent claims: Combined flow distributor and return collector, especially for WarBiwaaser underfloor heating, with a distributor housing made of sheet steel, which is inserted through a welded partition into a flow chamber and a return chamber is subdivided and closed at the front by a welded-in housing cover, with welded threaded pipe socket for the connection of flow lines and return lines as well as at least one welded-in threaded pipe connector for the connection of a flow-inflow line and a return-return line, therethrough characterized in that the flow chamber (3) and the return chamber (4) each by a housing half-shell ('5, 6) is closed, the longitudinal edges of the outward to longitudinal flanges (7, 8) are angled that the Longitudinal flanges (7, 8) with the edge in between the partition (2) by resistance welding 130065 / ÜU6 are bonded, and that the threaded pipe socket
the inside of the housing half-shells (5 »6)
Internal threaded rings (12, 16, 17) attached by resistance welding at the edges of punched holes (15). 2. Combined flow distributor and return collector according to claim 1, characterized in that the housing cover (9) have a circumferential raised edge (1O) which is flush with the edge of the housing half-shell (5 or 6) and the partition ( 2) concludes and connects with these
the flush outer edge is welded. 3 · Combined flow distributor and return collector according to claim 1, characterized in that the partition (2) is arranged vertically and each threaded pipe socket (12) is on the underside of the
Flow chamber (3) and the return chamber (4) are arranged on both sides of the partition (2). 4. Combined flow distributor and return collector according to claim 1, characterized in that the internal threaded rings (12, 16, 17) forming the threaded pipe stubs (12, 16, 17) have a protruding welding edge (I3) on their end face facing the housing wall
exhibit. 5 ·. Combined flow manifold and return manifold according to claim 4, characterized in that at least the internally threaded rings (12) for the feed and return lines each having a projecting from the annular end face centering ~ (14) projecting into the punched hole (13). 130065/0446