DE1402781A1 - Condenser or evaporator for refrigeration equipment and its method of manufacture - Google Patents

Description

MÖNCHEN 55, WestobrunnerStr.T4 ·> ^J.

Patent and utility model registration

Applicant: Heinrich Company. Schmitz & Sons, Munich 8, Heumarkter Str »64

Condenser or evaporator for refrigeration systems and Process for its manufacture.

The attachment of the evaporator or condenser fins on the coils is relatively expensive when using the known working methods and time-consuming because it has to be soldered or welded in numerous places. The application too the lamellas by tinning requires a proportionate high cost and time expenditure.

The invention now brings a significant advance in the field of condenser or evaporator production by applying the fins takes place in a completely new, quick and relatively cheap process to be carried out. According to the latter The main thing is that the pipe coils are open in a U-shape from above, if necessary

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Recesses provided with laterally protruding spacer bars of the lamellas inserted, subjected to a deformation pressure from above and then the free ends the spacer bars are bent to the pipes under the action of pressure. For the purpose of rational implementation of the process according to the invention is a die produced, in which the slats are first inserted. In their upwardly U-shaped recesses then the pipe coil is used. This is done by means of a male mold placed on a plunger then the deforming of the tubes and the pressing of the free ends of the spacer bars against the Eohrschlange, see above that a very strong and permanent connection between the fins and the pipes is created. At manufacture The new method can be used with great advantage in larger series of evaporators or condensers because Large quantities of condensers or evaporators can be produced quickly with considerable labor savings can be. Welding, soldering or tinning work are completely eliminated with the new process.

It is known condenser and evaporator tubes by the action of pressure fixedly inserted into holes fins, but in this case the effect of pressure must take place from inside the tubes forth mechanically table (by means of mandrels) or hydraulic. These known methods

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are cumbersome and time consuming and yield multiple times Contamination of the inner surfaces of the pipe as well as harmful Deformations and cracks. It is true that the deformation of the pipes when using the present new The procedure can also be done from within, but it is much easier and less time-consuming to do the To expose pipes according to the new proposal from above to a relatively low mechanical pressure.

Details and further features of the invention can be found in the following description and the drawing evident. Using the latter, the new method is explained in an exemplary embodiment, namely:

1 shows the cable view of a lamella, FIG. 2 shows a top view see FIG. 1,

Fig. 3 the lamella (s) with inserted coil before and after pressing,

Fig. 4 is a partial plan view of the finished capacitor or ₀ evaporator (left coil prior to compression)

Fig. 5 shows a particular embodiment.

In the strip-shaped lamellas 1, the sheet thickness is drawn exaggerated for the sake of clarity, a recess 6 is initially approximately off

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lig · 1 (left) obvious shape. The edges standing inward over the clear width are then bent outwards as webs in the indicated arrow directions, so that the spacer webs 3 (see in particular Pig. 2) arise. These webs are open at the top in a U-shape and are at the bottom in the radius of the to be inserted Pipes or pipe coil (4) are curved so that the recess 2 for inserting the pipes 4 results.

The further course of the process is in particular from Pig. 3 can be seen. Accordingly, the tubes 4 (or the tube coil) are inserted into the lamellae 1 from above. Simultaneously or after inserting the tubes 4 (Fig. 3 left), the tubes 4 can be mechanically pressurized in the direction of arrow a, so that they are subjected to a lateral deformation which is imperceptible to the naked eye. The free bathing ■■ &&,% Μ * ^: '8ΐΛΐίιά »Λ% $ &. - #: will be. now t & n * f $ a ~ · wiarktiflg aft 41 · tubes 4 tightened, so that the web parts 3a grasp the tubes 4 in a claw-like manner. The effect of pressure is symbolized in Fig. 3 on the left with the partial directions b, but these are not decisive for the practical implementation of the procedure. The deformation pressure (arrow direction a) can also be applied after

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The invention can also be implemented in such a way that only a pressing of the coil 4 into the Lamellas 1 by means of deformation pressure (a) acting on the tubes from above takes place in this case the lateral spacer bars 3 - when using a correspondingly high pressure - can even be omitted. This embodiment of the new method is illustrated in FIG. 3, greatly exaggerated.

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Claims (3)

Claims Experienced for applying fins to condenser or evaporator tubes for cooling systems, characterized in that the tube coils are inserted from above into recesses (2) of the fins (1) open from above U-shaped and optionally provided with laterally protruding spacer webs (3) subjected to a deformation pressure and then or at the same time the free ends of the spacer bars
Applying pressure to the pipes (4) are bent. 2. The method according to claim 1 / characterized in, that the upper parts of the U-shaped spacer bars (3) in the area of the parts (5) to be bent on the pipes be slit beforehand. 3. Condenser or evaporator, produced according to the method according to claims 1 and 2, thereby ge - indicates that the fins (1) on the pipe • 9098 16/006 2 U02781 Snakes (4) attached by means of U-shaped Bietansetege (3) Bind, the free ends (5a) of the tubes (4) 'grip around the claw-shaped. ■ 4 «Condenser or evaporator manufactured according to the Method according to claims 1 and 2> characterized in that the lamellae (1) on the coiled tubes (4) - if necessary while avoiding spacer bars - are held in place by deforming the pipes from the outside. I. 909816/0062