EP0909925A2 - Radiator with an embossed side wall - Google Patents

Abstract

A first (1) and second (2) plate rest against each other inside a first section (2a). At least one of the plates, by means of a first stamp (10,11,12) has intermediate cavities (40) for the heating medium t flow through, at least at the front. The second plate outside the first section extends into a second section (2b) and at least one the radiator side has a second stamp (20-24). The second and preferably the first stamp has a top stepped part running downwards or vertically.

Description

The invention relates to a radiator according to the preamble of claim 1 and a A process for its manufacture according to claim 11.

Such a radiator is known from DE 195 35 280 A1. There are two welded together Half-shells bent twice at right angles, the side surfaces being free from Are embossed and the back surface is provided with an embossing, so on the To form a riser pipe on the back of the radiator. The disadvantage here is that when hanging up a radiator cover there are unsightly gaps between the half-shells and the radiator cover form and cover for example on the side surfaces by additional Fasteners must be screwed.

For aesthetic reasons, radiators are often equipped with radiator covers and radiator side surfaces provided, which are screwed to the radiator, for example. On the one hand the screw connections are complex, on the other hand there are unsightly gaps between the radiator cover, the side panel and the one guiding the heating medium through half-shells formed heating surfaces.

The object of the invention is to provide a radiator, both laterally and offers a visually consistent appearance from the front and is easy to use a radiator cover can be provided.

The object is solved by the subject matter of claims 1 and 11. Advantageous further training emerge from the subclaims.

The invention is based on the new idea that the plates that form the heating surface are not only for the purpose of guiding the heating medium and for forming cavities to provide an embossing, but also to emboss the visual impression especially in combination with a radiator cover. Here The embossing also serves the new purpose of connecting the plates and simplify the radiator cover.

According to the invention, one of the two plates (or half-shells) also has in the side region of the Radiator, in which preferably no guidance of a heating medium is also provided an imprint on. This embossing creates a number of design options in contrast to conventional radiators with integrated flat side surfaces or screwed flat side surfaces. With the help of an embossing, the course of a overlapping cover and are embossed on the radiator front be brought into line optically by allowing an almost constant surface course becomes. The optically beautiful overlap solution also results in the technical one Advantage that in the overlap area, invisible to the outside viewer fasteners can be introduced to attach the cover. In this context is entitled to registration 29 710 646.5 of the same applicant "Radiator cover fixing device" referenced, in which a hidden fastener to fix a radiator cover is described.

In addition to the advantage just mentioned, there is also the advantage that the embossing on the Side surface or outside the actual heating surface (first section) can be designed in this way can that the radiator cover rests with its bevels or edges on it, to give her mechanical support. The visual impression is further improved, because there is a direct transition between the radiator cover and the panels.

In order to ensure such a support and / or a constant optical transition, the second embossing on its upper end, i.e. near the radiator cover, designed step-like, so that the edges of the radiator cover lie on this step can or the radiator cover only with a small gap and preferably gap-free merges into the surface of the embossing.

In order to ensure a transition that is as steady as possible, the stage is preferably as possible designed horizontally. An angle of 20 ° to the horizontal already resulted visually appealing results.

Since the edges of the radiator cover are preferably bent vertically downwards, the embossing preferably has a cranked course at the upper edge, so that for one the folds of the radiator cover in the overlap area parallel to the upper one The edges of the panels run and, on the other hand, the surfaces of the vertical folds continuously transition into the surfaces of the embossing. This can also be a more precise fit Seat of the radiator cover should be aimed for. However, between are preferred Radiators and radiator cover damping agents introduced to counteract faults (See the above-mentioned application "Radiator cover fixing device").

To ensure an even transition from the radiator cover to the embossing surface, the first and the second embossing are preferably formed to the same depth, so that an unsightly protrusion of the radiator cover is avoided.

The step edge of the step-shaped course of the second embossing is preferably parallel to the upper edge of the second plate, so that there is between the edge of the radiator cover and the embossing a smooth stop line or a uniform gap results. In this context, it should be noted that there is a gap between the radiator cover and the embossing in the present invention is significantly less noticeable than a continuous gap between the radiator cover and the plates at the state of the Technology. Because the gap is due to the recess of the embossing (the step-shaped Gradient) is not deep and therefore does not act as a dark and therefore conspicuous gap.

The amount of overlap between the panels and the radiator cover can be reduced to Example for the side area and the front area can be selected differently. Preferably however, the overlap is the same. Therefore, the step-shaped one is preferably also located Course of the first and second embossing at the upper end, in particular the second Plate at the same height.

In order to complete the visually uniform appearance and to create a continuous look to ensure the smoothest possible transition between the radiator cover and the embossing, The second embossing runs around the corner from the front of the radiator and over the side area. Since the radiator side surface is preferably by bending the second plate is produced, measures are taken to avoid wrinkling, if the second embossing is to be bent at right angles. With such a Measure can involve, for example, cutting the second panel at the top edge act on which the plate is to be bent. Such an incision is made below the cover and is therefore not visible.

The radiator can be designed so that the spaces for the heating medium through each additional embossments or bulges of the plate are produced. Optional However, only a single plate can be embossed and the other plate can stay flat. For example, you can have a completely smooth surface on the outside Manufacture radiator that only fins inside to carry the heating medium having. In this case, an external second plate in the first section would not be Have embossing and, for example, only in the second section on the radiator side for example, have an inward embossing on which the radiator cover is located can hang up inside. However, the outer plate (preferably the second plate) also structured (in the first section) or embossed, especially with Provide ribs to enlarge the space for the passage of the heating medium.

To save material and facilitate the bending process to form the side surface, the first plate (preferably the inner plate) is shorter than that second plate and extends essentially only over the heating surface and over the Radiator front. At the edge of the overlap between the first plate and the second The first plate is connected to the second plate by means of a welding process along a welded from top to bottom line. With this welding process it can unsightly marks and the formation of a scaly seam, as the weld pool For example, in roll welding, it only solidifies after the rolls have passed. A such weld seam can be embellished by grinding or brushing. Training layers of scale can be avoided by welding in a protective gas atmosphere or remove by mechanical reworking. According to the invention is in the transition area between the first and second sections a recess from the radiator outer surface provided, which is preferably a non-embossed area (Zero line of the sheet). In this way the welding takes place in one, of seen from the outside, so that any traces of welding are less noticeable as they are compared to the rest of the radiator front surface and the radiator side surface is set back. For the same reason, this transition area or return area between the first and second section the width of this recess area chosen as low as possible. But preferably so that there is enough space for insertion the welding rollers are in the recess area. Furthermore, care is taken that the width of the recess area harmonizes with the other rib embossing. A Width in a range of about 1 cm or less has proven to be practical.

The second embossing also preferably has in the second section on the first section a side jump back. This has a double function. On the one hand it serves as a shadow gap for the radiator to provide a nice finish to the wall guarantee. On the other hand, this jump is preferably also unstressed and can thus cut in a simple way during production, which is the series production of Sheets of an endless material relieved. This is related below explained in more detail with the method.

The shadow gap or the recess just mentioned preferably has a tab, which is preferably punched out and folded into the interior of the radiator. This tab can either be folded upwards and thus approximately to the front of the radiator form parallel surface, or be folded down and thus one form an approximately parallel surface to the ground. This tab in turn has a double one Purpose. On the one hand, it enables the radiator cover to be overlapped. On the other hand, it enables the radiator cover to be attached to the cover For example, plate with screwdriver.

In the case of the embossments described above, the bulges resulted from emboss and the edges by not embossing. Of course, this can also be done in reverse become.

The present invention further relates to a method for producing the previously described Radiator. For this purpose, an endless material is preferably used, for example a strip material handled. The strip material is preferably sheet metal. This is introduced in an embossing tool. The sheet is alternated using the embossing tool provided with the first embossing in a first section and in a second section with the second embossing. The second section is preferably in divided in the middle so as to form one half on each side of the first section. On the second section is preferably not embossed at the point of division. This makes it easier the division. At the same time, the unembossed section serves as a shadow gap or recess, as stated above. After making the first plate, the second one Plate connected to the first plate by pressure welding. Then the second plate is along a longitudinal edge bent to form the radiator side surfaces. About warps Measures are taken to prevent the second section from being turned over. For this purpose, an incision is made at the top at the point where the longitudinal edge runs Made the end of the second plate or punched out some material.

Figur 1

zeigt eine Aufrißansicht eines Teils des erfindungsgemäßen Heizkörpers.

Figuren 2a, 2b bzw. 2c

zeigen eine Vorderansicht, eine Seitenansicht bzw. eine Draufsicht eines erfindungsgemäßen Heizkörpers vor dem Umbiegen der Seitenteile.

Figur 3

zeigt einen erfindungsgemäßen Heizkörper mit umgebogenen Seitenteilen.

Figur 4a und 4b

zeigen Ausführungsformen des Verlaufs der Heizkörperprägung am seitlichen Rand des Heizkörpers.

Preferred exemplary embodiments according to the invention are explained in more detail below with reference to the attached figures. Further advantages and features of the invention are disclosed. The same reference numerals designate the same or similar parts.

Figure 1

shows an elevation view of part of the radiator according to the invention.

Figures 2a, 2b and 2c

show a front view, a side view and a plan view of a radiator according to the invention before bending the side parts.

Figure 3

shows a radiator according to the invention with bent side parts.

Figure 4a and 4b

show embodiments of the course of the radiator embossing on the side edge of the radiator.

In Figure 1, the second plate 20 is shown, which extends over a first and second section extends. The first plate 1 extends only over the first section. In the first Plate 1 is formed with an indentation 12. This forms with corresponding impressions in the second plate 20 a space for the passage of a heating medium. The embossing 12 is arched out of the drawing plane. Between 10 and 12 is an oblique embossing step 11, which shows the flat depression 12 with the unembossed area 10 connects. The surface 14 is again not embossed and is over a flat recess area 13 connected to the flat embossing 12.

The first plate 1 is preferably over the unembossed edge area 10 by pressure welding connected to the second plate 2 over the entire first section. The second plate 2 has an embossment 22 in the second section which extends around the corner. A inclined step-shaped embossing surface 21 connects the flat embossing 22 with the unembossed Area 20. The embossing surface 21 is at the same height as the embossing surface 11. The plate 2 also has a first embossing (not shown) in the first section, which is approximately complementary to the embossing of the plate 1 shown. The one for the oblique embossing stage 11 complementary embossing stage of the second plate 2 is on the same level as above the step-shaped transition stamping surface 21 of the second stamping 22.

Corresponding to the unembossed surface 10 'at the lower end of the first plate and a complementary one unembossed area at the bottom of the second plate in the first section has the second plate in the second section in the area at its lower end an unembossed Recess 24 on the same level 23 from the second flat stamping surface 22 jumps back, as with the embossing surface 12 at the lower end of the first plate 1 11 'is the case.

Figure 2a shows the second plate 2 with welded first plate 1 in the not bent Condition and from the perspective of the interior of the radiator. The already in connection with the figure 1 and the structure of the embossing described there are not completely complete see. Instead, the structure of the plate 1 ″ is shown, which is that shown in FIG. 2c The illustrated half shell is another, together with another half shell 2 '' heating surface attached near the wall. The structuring however, is similar to that shown in FIG the reference numerals with a double line.

Behind the plate 1 ″ are parts of the plate 1 together with their embossed structure 10, 11 and 12 to see that has already been described in Figure 1. Behind the plate 1 is the second section of the plate 2 can be seen, which is welded to the plate 1. The plate 2 has the same embossed structure 20, 21, 22, 23 and 24 as shown in Figure 1. However, it is not bent in its edge area.

Figure 2b shows a side view of the arrangement of the different half-shells 2, 1, 2 '' and 1''.

In contrast to FIG. 1, the representation of the lateral recess 26 is missing in FIG. 2 on the edge of the plate 2 and a punched out, to subsequently the tab 28 in the transition area between the edge portion 26 and the unembossed upper portion 20 of the To be able to fold plate 2.

In Figure 3, the radiator is shown with bent side surfaces. In particular are the two sections of the plate 2, namely the first section 2a and the second section 2b shown. The first section 2a has an embossing 30, 31, 32, the region 30 is not embossed and represents the zero line of the embossed sheet. In the channels 40 that is Led heating medium. With 50 convection slats are designated. 60 is about a fastening device which serves to attach the radiator to the wall 70, which is not described in more detail here. In this regard, the pending application by the same applicant No. 196 33 144.7, the disclosure of which is hereby is included in the registration.

In the transition area between the first section 2a and the second section 2b of the second plate, namely in an unembossed area 34 running from top to bottom the first plate 1 is welded at a point 17 to the second plate by roller seam welding connected. The area 34 in which the rollers are placed opposite to the area 17 are preferably located in an unembossed section and are therefore recessed, so that unwanted surface changes achieved by welding less noticeable are. The area preferably has a width of 8 mm, which is used to create rolls of one sufficient width for roll seam welding. The one created by the embossing Bulge 22 runs continuously from the front of the radiator to the side of the radiator around. The same applies to the transition surface 21 and the unembossed upper area 20 to. The bulge 22 goes in again at the lateral end of the second section 2b the unembossed recess 26 via. The upper unembossed area 20 runs in this Separated area near the wall and forms a tab 28 ', which in contrast to the figure 1 is not generated due to vertical punching by folding, but by a horizontal punched out, due to which the tab 28 'standing in the radiator interior can be folded.

As already mentioned above, the upper edge of the bulge 32 is preferably on the same Height, like the top edge of the bulge 22, to a continuous and appealing to ensure visual appearance.

FIG. 4a shows the end region of the second plate 2 facing the wall in the section 2b with the embossing 26 on the edge and a punch 29 between the embossing surface 22 and the embossing 26. Because of the punched-out 29 an only indicated Tab 28 are bent into the horizontal, as shown in Figure 1.

Figure 4b shows an alternative corner principle, in which the tab 28 'is not horizontal, but standing in the interior of the radiator. In order to do this, a die cut 29 'is produced during the stamping process.

According to the previous embodiment, the bulges achieved by the embossing were directed outwards from the radiator in the first and second sections. However, the embossments can also be directed inwards and each in their direction differentiate according to section or have no embossing over an entire section. So For example, the first section of the second plate can have no embossments, to form a smooth radiator front. This can be followed at least in sections Connect the second section, which is embossed on the inside, and then the rest Forms part of the radiator front and the radiator side. In this case, the embossing on the inside an internal contact surface for a radiator cover are formed, which are then simply placed on the inward-facing impression becomes. The inward embossing in the side part or the second section of the The second plate can also be designed in the form of a handle so as to provide a recessed grip for transporting the radiator or for folding the radiator away from the wall. The the recessed grip on the inside also serves to support the radiator cover. The radiator cover can not only rest on the side parts, but also also on the inward embossing of the first plate, which is preferred on the radiator front are formed to form gaps for the heating medium. To this The way can be done towards the outside (front and side surface) except for the recessed grips ensure completely smooth appearance and a cover grille simply on the Place inward-facing embossings on them for easy cleaning Remove way again.

Claims (13)

Radiators, preferably panel radiators, with a first (1) and a second (2) plate, which abut one another within a first section (2a), by means of a first embossing (10, 11, 12; 30, 31, 32) of at least one of the plates, spaces (40 ) to carry out a heating medium at least on the radiator front, so that a heating plate is preferably created,
wherein the second plate (2) extends outside the first section (2a) into a second section (2b) for forming at least one radiator side, characterized in that the second plate (2) in the second section (2b) at least on the radiator side is provided with a second embossing (20, 21, 22, 23, 24), the second embossing (20, 21, 22, 23, 24) and preferably also the first embossing (30, 31, 32) at its upper end forms a step-like course in the vertical cross-section from top to bottom. Radiator according to claim 1, characterized in that the step-shaped course at the upper end of the second embossing is at least approximately at the same height as the step-shaped course of the second embossing, the step depth of the step-shaped course preferably being the same depth. Radiator according to one of claims 1 or 2, characterized in that a step edge of the step-shaped course of the second embossment extends approximately parallel to the upper edge of the second plate, and / or a step edge of the step-shaped course of the first embossment approximately parallel to the upper edge of the first and / or second plate runs. Radiator according to one of the preceding claims, characterized in that the second stamping of the second plate is formed both on the radiator side and on the radiator front, and / or that the second stamping is formed around the corner between the radiator front and the radiator side. Radiator according to one of the preceding claims, characterized in that the second embossing is flat, in particular rectangular, and is formed by a continuous bulge (22) surrounded by unembossed edges, an unembossed edge preferably being provided in the transition region between the second and first sections. Radiator according to one of the preceding claims, characterized in that the first plate does not extend beyond the first section. Radiator according to one of the preceding claims, characterized in that the first embossment in the vicinity of the first section has a bulge (32) which extends from top to bottom and projects outwards and which projects from a bulge (22 ) is adjacent to the second embossing, so that an inwardly offset recess (34) is formed in the transition region between the first and the second section between the two bulges (22, 32). Radiator according to one of the preceding claims, characterized in that the second plate (2) in its second section (2b) on its side facing away from the first section (2a) has an edge (26) which is offset from the inside of the radiator and which is preferably not embossed and / or has an inwardly bent tab (28, 28 ') at its upper end. Radiator according to one of the preceding claims, characterized in that the radiator has a radiator cover and the first and / or second embossing is designed such that the surface of the embossments adjoins the surface of the radiator cover, the preferably gap-free connection, in particular in the case of the step-like profile according to one of claims 1 to 3. Radiator according to one of the preceding claims, characterized in that the radiator has a radiator cover and at least one of the embossments for placing the radiator cover or for standing up the radiator cover with its folds on the embossment is formed, the resting or standing up particularly at the level of step-shaped course according to one of claims 2 to 7. A process for the production of radiators according to claims 1 to 10, characterized in that a) to produce the second plate, the first embossing and second embossing alternately on a material to be embossed, in particular strip material; is carried out and there is a central division of the second embossing, so that one half of the second embossing is arranged on both sides of the first embossing; b) the first plate is joined to the second plate by pressure welding; c) the second embossing is bent on a predetermined long edge in order to form a radiator side surface, with preference d) the central division takes place in an unembossed section. A method according to claim 11, characterized in that the non-embossed section, which is designed as a shadow gap, from which a flap which is later to be bent inwards is punched out during embossing. Method according to claim 11 or 12, characterized in that the first and second plates are welded to one another in an unembossed area between the first and second embossing, in particular by roller seam welding.

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