DE7802277U1 - CONNECTOR FOR RADIATOR - Google Patents

Description

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Büdinger Metallwarenfabrik Linn und Lange GmbH 6470 Büdingen 1 (Hesse)

'Connection piece for radiator "(case 1)

The invention relates to a connection piece for connecting a line carrying the heating medium to one, preferably two-layer radiator, the connecting piece consisting of a connecting part intended for connection to the heating plate (s) and a connection part welded to it and intended for connection to the line of the heating medium. Such connectors are required in large numbers by the heating industry. It therefore exists alongside the Functionality the primary goal to reduce the manufacturing cost of such fittings. This goal will from the known connectors of the type mentioned so far not solved satisfactorily. So you know from the DE-GM 7 424 525 a connector with a spherical hollow body at least in the attachment region of the connector. The spherical shape has therefore been chosen to allow the connection part to be at any angle to the radiator connection opening as required set, wherein the hollow body can be processed in the area of use of the connecting part so that it has a planar cut opening. This is intended to

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welding of the connector are facilitated. The production of this hollow body requires a considerable amount Manufacturing effort and thus a corresponding increase in manufacturing costs. Also is to achieve a planar welding surface for the connecting part has been proposed that the cross section of the connecting part is square in the area of the connector (DE-GM 7 313 208). This also achieves a flat welding surface to facilitate electrical resistance welding between connector and connector, however, the production of the square cross-section of the connecting part also requires corresponding Additional costs * In the case of both previously known connection pieces, there is an additional complication in terms of production technology that the area of the connecting part intended for welding to the heating plate (s) must be circular, otherwise no flawless electrical resistance welding can be produced.

As already stated above, the object of the invention is to maintain functionality to reduce the manufacturing costs of such a connector.

To solve this problem, the invention primarily proposes that the connecting part consists of a continuously cylindrical pipe section that a cutout is provided in the outer surface of the pipe section and that the connecting part at its end abutting the connecting part has end edges of such a shape or course has that it surrounds the cutout and rests snugly on the pipe section · with this are welded. The connecting part is made in the simplest way from a pipe

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piece can be produced, including only a correspondingly from a steel pipe long part must be cut off and the cutout cut out or formed by punching is. This is much simpler and therefore associated with correspondingly lower costs than production the connecting parts in the explained, known connecting pieces. Just as easy and therefore with the production of the connecting part is low cost. This can either be done from a piece of pipe, the front edges of the to the connecting part

the welding end are to be deformed accordingly.

The connector according to the invention can be produced by cold extrusion. This achieves two advantages. * On the one hand, this allows molding at a low cost

the end edges of the connecting part to be welded to the connecting part. In addition, cold extrusion is used from the solid material in several stages an increased strength or solidification of the material is achieved.

Further advantages and features of the invention are the dependent claims, as well as the following description and the associated drawing of an exemplary embodiment according to the invention refer to. In the drawing shows:

Fig. 1: A connector designed according to the invention in the side view,

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Fig. 2: a section along the line H-II in Fig. 1,

Fig. 3: a plan view of the connecting part of the connector according to arrow A in Fig. 1,

4: a view from below of the connecting part of the connecting piece according to arrow B in FIG. 1.

The embodiment shows one designed according to the invention Connection piece for two-layer radiators. The connecting part 1 is cut from a piece of pipe and therefore continuously circular in its cross-section (see also Fig. 2). Its beveled ends 2 are through Electric resistance welding to the corresponding connection points the heater 3, indicated only by dash-dotted lines in the drawing, can be welded on.

The connection part 4 is to be explained in more detail designed and welded to the connecting part 1. It is used to connect to a, not shown in the drawing Line for supplying or removing the heating medium.

The cylindrical pipe section 1 is provided with a cutout 5 in its outer surface (see also FIG. 3). the Connection part has at one of its ends end edges 6, 7 of such a shape that they surround the cutout

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and lie snugly on the outer surface of the pipe section, so that the drawn welded joint (the welded seam itself is for reasons of graphic Simplification not shown) is perfectly producible. This welding takes place in the form of electric resistance welding, wherein the end edges 6, 7 of the connecting part 4 form a contact surface before they are welded on in the form of a thin edge aufweisa n, for example 0.2 mm wide. At the other end of the connecting part 4, which is at the top in FIG. 1, one is not shown in the drawing Thread shown provided.

In a preferred embodiment of the invention is the cutout 5 is approximately rectangular (see FIG. 3), with its long side 5 'in the longitudinal direction of the connecting part 1 runs. The connecting part 4 is for surrounding this cutout 5 and welding it to the connecting part 1 provided with the two parallel, each straight end edges 7, which are next to the long sides 5 'of the cutout 5 are located and have a corresponding length. The other two front edges 6 of the connecting part 4 run approximately at right angles to the front edges 7 and 7 explained above have a curvature which corresponds to the radius r of the pipe section 1 serving as the connecting part. This is a such connecting part with its front edges 6, 7 when welding is flush on the outer surface of the pipe section on (see Figs. 1 and 2).

An embodiment of the connection piece for single-layer radiators would also be possible (not shown).

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As shown in FIGS. 2 and 4, the connecting part 4 can so be designed that the curved or curved end edges 6 approximately in the area of the cylindrical The circumferential surface 4 'run, while the straight end edges 7 from the area of the cylindrical circumferential surface are shifted inward or bent.

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Claims (4)

1. Connection piece for the connection of a heating medium leading line to one, preferably two-layer radiator, the connector from one to Connection to the heating plate (s) certain connecting part and a welded connection part to the pipe of the heating medium Connection part, characterized in that the connection part consists continuously of a cylindrical pipe section (1), that a cutout (5) is provided in the outer surface of the pipe section (1) and that the connection part (4) has front edges (6, 6) at one of its ends. 7) has such a shape or course that they surround the cutout (5) and are welded to the pipe section (1) resting thereon. 2. Connection piece according to claim 1, characterized in that the cutout (5) is rectangular as wherein extend the long sides (5 ¹⁾ in the longitudinal direction of the pipe section (1) and that the connecting part has two mutually parallel, in each case straight end edges (7) has, which are located next to the long sides (5 ') of the cutout (5) and are designed to be correspondingly long and that two further end edges (6) of the 7602277 07/20/78 • ft · t • · · i j Final part are arranged approximately at right angles to the first-mentioned two end edges (7) and run in a curvature corresponding to the radius (r) of the pipe section (1). 3. Connection piece according to claim 2, characterized in that the curved end edges (B) of the connection part are roughly in the course of its cylindrical outer surfaces, while the straight ones Front edges (7) of the connecting part from the course of its cylindrical outer surface inwards displaced or bent. 4. Connection piece according to one or more of the claims 1 to 3, characterized in that the connecting part is cold-extruded. 7802277 2QLK74