DE1018888B - Device on plate heat exchangers for holding the plates made of thin sheet metal - Google Patents

Description

GERMAN

The invention relates to plate heat exchangers, in which the plates made of thin sheet metal on a transverse to the side surfaces of the plates running support rod are individually suspended :. As a holding device latches are known that across run the support rod and attached at both ends to the plate on both strings of the support rod are.

In order to be able to remove the plates from the support bar for cleaning, etc., the latches be releasably attached to the plates. The previously known designs of this type require a special one Formation of the bolt or the plate. In some cases, the bolt has to be made with the help of tools be solved.

According to the invention, the bolt has a fork with two legs at both ends thin sheet metal, with their flat sides facing one another, an edge part of the plate grip around at least approximately tightly and are in hole-and-tenon engagement with the plate, and the Legs are also elastically connected to one another in such a way that they do not deform when they are detached the fork can be spread apart.

In this design, the bolt is very easy to manufacture, and the bolt can be detached without assistance can be easily done by hand using tools. Nevertheless, the attachment is through the Suspension of the bolt legs absolutely safe.

In the case of sheet metal hinges, it is known to produce an opening in one hinge part and that one To drive out material surrounding the opening to form a protruding round hollow pin. This rivet-like one The pin is pushed through a hole in the other hinge part and riveted. Opposite to this known hinge design is the essential idea of the invention that the retaining latch the edges of the plate comprises fork-shaped and that the two legs are resilient, so that the attachment can be easily loosened. This releasability is with an ordinary hinge not available, as a hinge always remains in its riveted shape and is not spread apart will.

The invention is described with reference to the drawing, which shows some embodiments of the invention illustrated.

Fig. 1 shows a part of the upper part in a side view a heat exchange plate with a device according to the invention;

Fig. 2 shows a section along the line II-II of Fig. 1 represents;

FIG. 3 shows the same section as FIG. 2 in the state for removing the plate;

contraption

on plate heat exchangers

to hold the thin sheet metal

existing panels

Applicant:

Aktiebolaget Rosenblads Patenter,
Stockholm

Representative: Dipl.-Ing. W. Meissner,

Berlin-Grunewald, Herbertstr. 22

and Dipl.-Ing. H. Tischer, Munich 2, Tal 71,

Patent attorneys

Claimed priority:
Sweden 30 August 1954

Gustaf Conrad, Stockholm,
has been named as the inventor

Figures 4 and 5 each show a modification of the bolt attachment;

6 and 7 show a modification of the bolt from the side and from above, and

Fig. 8 shows a further modification of the latch from the side.

The same parts are provided with the same reference symbols in the various figures.

Fig. 1 illustrates a heat transfer plate 1 with a slot 2 which engages around a support rod 3 on which the plate is suspended by means of a bolt 4 fastened at both ends to the plate on both sides of the support rod. According to the invention, the bolt consists of two thin sheet-metal strips 5α and Bb, which are firmly connected to one another at their central parts by means of rivets 6. The strips can be riveted and z. B. be connected to one another by spot welding. With their ends Ta and 7b or 8ß and 8b, the strips grip around part of the plate at the fastening points. At each end, the strip 5 & also has a hole pin 9 α or 9 b produced by pressing out the strip, which protrudes into a hole 10 in the plate and into a hole 11 in the strip 5 α in the fastened position of the bolt. When the plate is to be removed from the support rod, the two strips are spread at one end of the bolt as shown in FIG. 3, so that the pin 9 a

709 75W290

is pulled out of the holes 11 and 10, whereupon the bolt, which is still attached to the plate by means of the pin 9 &, is pivoted about this pin into the dot-dash position according to FIG. The plate with the bolt attached to it can then be removed. You can of course also loosen the latch on the pin 9 b and pivot it around the pin 9 a. The bolt can also, for. B. be easily removed for the purpose of replacement from the plate in that it is solved in the same way at both ends. If the plate is to be attached to the support rod again, you only need to fold down the bolt again so that the pin snaps into the hole in the plate; in a corresponding manner, a loose bolt is easily attached to the plate. The legs, which are thin and expediently not more than 1 mm thick, can be stretched apart by hand without tools. The fastening is nevertheless completely safe every time the plate is handled on the support rod, since the leg spreading movement required to loosen the fastening cannot be carried out unintentionally.

Fig. 4 shows a modified fastening in which the strip Ta of the bolt "has no holes for the pins, which therefore only pass through the holes in the plate. This embodiment can be used to make the bolt cheaper if the plates are relatively are small and light, and therefore particular make no major requirements for the carrying capacity of the dressing. in such cases and even when the plate is very thin, the fastening of the plate 1 can further by Fig. 5 will be modified in accordance with, instead of the strip 7 b has a pin 9 c which enters a hole in the strip.

In those cases where it is more important that the bolt and the plate, e.g. B. during transport to and from disk bearings, can be handled together without the risk of being lost the latch consists of the fact that the latches are easily removable, can be achieved by a weak riveting of the a pin, e.g. B. at 12 of FIG. 3, this effect while maintaining the pivotability of the Latch to reach this pin.

The bolt ¹ can also be given a straight shape other than that shown in FIG. 1, for example a shape curved over the support rod 3, so that the depth of the incision 2 in the plate can be reduced. Fig. 8 shows an embodiment in which the locking bar 4 α, which otherwise has the design already described, is so curved that the aforementioned incision is completely superfluous. This means a simplification of the plate, which only needs to be provided with the small holes 10 or possibly with pins 9c for the purpose of fastening.

The pressed out pins shown mean a particularly cheap and durable embodiment, the it is made possible by the fact that the elements from which the pegs are supposed to protrude are made of thin sheet metal. However, within the scope of the invention, massive pegs can instead be placed on the corresponding Riveting or welding elements, which can be useful in large apparatuses where the Plate thickness must be relatively large as a result of greater stress on the association.

6 and 7 show a modified embodiment of the bolt according to the invention. The lock consists here of a first flat sheet, the immovable with two opposite sides recesses is provided b 13a and 13, whereupon the sheet is bent along the connecting line, so that the bent parts 5 c and 5 form d strips, which strips the Sa and Bb correspond and are firmly connected to one another at their central parts by the back 14. The pins 9 σ and 9 b are expediently produced before bending.

The illustrated and described embodiments are only examples, on the basis of which the person skilled in the art can use can make further changes within the scope of the invention.

Claims (5)

Patent claims: 1. Device on plate heat exchangers for holding the thin sheet metal Plates, which on a transverse to the side surfaces of the plates extending support rod by means of a for each plate provided bars are hung individually, the bar across the Support rod runs and at both ends of the plate on both sides of the support rod is attached, characterized in that the bolt with a fork at both ends has two legs made of thin sheet metal, the flat sides facing one another Grip the edge part of the plate at least approximately tightly and engage with the plate in hole-and-tenon engagement stand, and that the legs are so elastically connected that they are when Detachment can be spread apart without permanent deformation of the fork. 2. Apparatus according to claim 1, characterized in that the one leg after one the other leg has a pin pointing through a hole in the one between the legs lying part of the heat exchange plate and preferably also in a hole in the opposite Thigh kicks. 3. Apparatus according to claim 1, characterized in that the between the legs lying part of the heat exchange plate has a pin through a hole in the one Thigh passes through. 4. Modification of the device according to claim 2 or 3, characterized in that the Pin only at one end of the bolt at its free end over the one or more on the pin fastened elements is riveted, so that an articulated, but not releasable attachment obtained will. 5. Device according to claims 1, 2 or 3, characterized in that the bolt consists of two consists with their flat sides directed against each other sheet metal strips, which only at their middle parts are firmly connected to each other. Considered publications:
German patent specification No. 63 809. 1 sheet of drawings © 70 & 759/290 10.57