DE8521746U1 - Device for treating flowing media - Google Patents

Description

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Device for treating flowing media -tmtl Wj \ wfF ι h WAn TiI ί h »** / t v * U r% v« t »4 ~ r \ 1 1 ti η π.

The invention relates to a device for treating flowing media, consisting of a possibly ceramic structure »which is provided with flow channels, which consists of a plurality of individual elements, the one Base plate with spaced apart on one of its surfaces Has ribs and which are assembled in the same direction in a three-dimensional arrangement to form a structure »where the Flow channels are formed by the base plate and the ribs of adjacent individual elements.

In order to clean, cool or heat flowing media, such as gases or liquids, or to bring about chemical reactions or catalytic processes, in usually molded bodies are used that divide these flows, ensure the largest possible contact surface and the Regulate flow conditions *

A variant of known molded bodies for this purpose consists of monolithic molded bodies with honeycomb structures and thus continuous flow channels that support the flow

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split and straighten. Such honeycomb bodies exist in many cases Made of ceramic materials that are shaped, dried and fired using the extrusion process. Drying and firing Ceramic moldings of this type are costly and time-consuming and - because of the large number of walls and air ducts - difficult to control. This manufacturing method such Honeycomb body limits the possibility of surface design on the channel walls to structures in the direction of the strand, because only they can be formed by extrusion *

iö Therefore it is with this manufacturing process - also bsi Moldings made from other, non-ceramic materials - not possible, surface structures and recesses across the Realize the flow direction, although this would be desirable or necessary to the flow of the to be treated To keep the media turbulent - if possible without a significant increase in the flow resistance - and to intensify the contact of the media with the surfaces of the flow channels.

In other systems, so-called bulk bodies are used in the form of balls, rings and similar geometrical ones To shape. These bulk bodies allow a good exchange of contact with the media to be treated * but lead to the decisive disadvantage that they have a relatively high j Cause flow resistance, which is hardly predictable and only j can be varied in a targeted manner within narrow limits. j

A significant improvement of the above-described Anj Orders is made with a device of the j Type achieved, which was presented in an older patent application.] was beat. Through this training you not only achieve a good exchange of contacts between the too! treated media and the structure on the one hand and the targeted influencing of the flow resistance or the flow on the other hand, it is also achieved that the device is very inexpensive to manufacture, very maintenance-free

j is friendly and easy to handle.

The invention is based on the task described at the outset Device to improve even further, in particular with regard to influencing and controlling the flow conditions.

To solve this problem, the invention provides that the longitudinal axes of the ribs have the same distances from one another over the length of the individual elements and that the outer surfaces of the ribs at least partially opposite the averaged longitudinal axis run inclined. The mean longitudinal axis is understood to mean the main direction of extent of the ribs, which are none have actual longitudinal axis, unless they are continuously straight.

In a first embodiment it can be provided that the Ribs are formed corrugated, in order to maintain the same distance between the central axes of the ribs the corrugation of all spaced apart ribs swings out uniformly.

A second particularly advantageous embodiment, with the help of which the flow conditions can be further influenced, results from the fact that the ribs with longitudinal center axes running parallel to one another have a changing direction in the longitudinal direction Have thickness. The change in thickness can take place in stages, for example starting from a greater thickness at the inlet there is a single or multiple step change in thickness. Instead, the thickness can also be continuous decrease from one end to the other.

Of course, in the case of the invention Device further variations can be provided, in particular a catalytically active surface coating of the elements as well as corresponding further profiling or other Design of the surfaces.

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The invention will be explained in more detail below using an exemplary embodiment and with reference to the drawing. Included 1o '·· show:

1 shows the structure of the device from individual elements within a housing,

2 shows a housing fully loaded with the individual elements in a perspective illustration

Fig. 3

to 7 top views of three different embodiments of the individual elements for the structure of the Vor direction with ribs designed according to the invention.

Figures 1 and 2 only give an example of a structure to be designed from a plurality of individual elements 1 again, in this embodiment within a housing 17 made of, for example, a heat-resistant material. the clear internal dimensions of this housing, 17 correspond to the grid dimensions of the individual elements 1. The housing 17 is, like the figures 1 and 2 reveal, open at the top and is opened by a the two side walls 18 overlapping cover 19 closed. The one side wall 18 'of the housing 17 closes the each outer flow channels 20 'from the individual elements laterally. The base plate 2 of each individual element 1 of the Module system serves to complete the corresponding Flow channels 20 of the individual elements located below 1. The flow channels 20 between the ribs 5 of the Individual elements 1 lying on top in the stack are through

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the lid 19 closed. The base plate 2 of each superordinate individual element 1 closes the flow channels 20 of each individual element 1 located below it.

As FIG. 2 shows, the end face of the housing 17 is closed by the plate 21, which is provided with a perforation 22 is provided over its entire surface. The medium to be treated enters the housing 17 through this on the inlet side on and off again on the opposite (not shown) side. The outer walls of the housing could also consist of a Consist of wire mesh or e.g. ceramic perforated plates or similar molded parts or materials.

The individual elements 1 are made comparatively thin-walled, namely the wall thickness can go up to the lower limit of the desired mechanical strength. The individual element 1 consists of a flat base plate 2, on which four ribs 5 are provided in each of the illustrated embodiments, all of which have the same height compared to the lower surface of the base plate 2. One outer rib 5 ¹ runs along the lateral longitudinal edge 7 of the base plate 2, the other outer rib 5 ^M runs in the embodiments according to FIGS. 3 and 5 at a distance from the other longitudinal edge 8 of the base plate. This distance corresponds to the respective distances between two ribs 5.

In the embodiment according to FIG. 3, the longitudinal center axes of all ribs 5, 5 ', 5 ¹¹ are arranged parallel to one another. The thickness of the ribs, however, change from a value d ₁ on the inlet side to a value d ₂ on the outlet side, the change in thickness occurring suddenly. In order to achieve a seamless connection when such individual elements are arranged next to one another, a single block 23 is formed on the edge 8, the thickness of which is transverse to the longitudinal direction (d ^ - d ₂ ) / 2.

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In the embodiment according to FIG. 4, the thickness of the ribs changes from the input value d. continuously to the starting value d2, which has the consequence that the rib 5 ^{11 is} not arranged at a distance from the edge 8, but along this outer edge 8. The outer ribs 5 ¹ and 5 ¹¹ each represent half of a rib 5 and complement each other when arranged next to one another to form a complete rib.

In the embodiment according to FIG. 5, in turn, the basic shape of the plate is no longer a real rectangle, since the longitudinal edges 7 and 8 are also corrugated as are the ribs 5, 5 ¹ and 5 ¹¹ .

FIG. 6 shows an embodiment in which the ribs 5, 5 ¹ and 5 ¹¹ are corrugated in a meandering manner or, to put it another way, in which the ribs are provided with transverse grooves on both sides which are offset with gaps and run perpendicular to their longitudinal direction. In the arrangement according to FIG. 7, the ribs 5, 5 ¹ and 5 ′ ^{1 are provided} with ribs 24 arranged on one side at the same point or » if it is assumed that the normal ribs correspond to the thinner intermediate web structure, they each have transverse ribs 25 arranged on both sides.

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Claims (6)

Protection claims Device for treating flowing media, consisting of a possibly ceramic structure, which with Flow channels is provided, which consists of a plurality of individual elements that have a base plate has spaced ribs on one surface and which are assembled in the same direction in a three-dimensional arrangement to form a structure, with the flow channels are formed by the base plate and the ribs of adjacent individual elements, characterized in that the longitudinal center axes of the ribs (5, 5 ¹ , 5 ¹¹ ) are equally spaced from one another over the length of the individual elements and that the outer surfaces of the ribs at least partially compared to the averaged Longitudinal axis are inclined. 2. Apparatus according to claim 1, characterized in that the ribs (5, 5 ', 5 ¹¹ ) are formed corrugated. 3. Apparatus according to claim 1, characterized in that the ribs (5, 5 ', 5 ¹¹ ) with mutually parallel longitudinal central axes have a thickness varying in the longitudinal direction. 4. Apparatus according to claim 3, characterized in that the thickness changes gradually. 5. Apparatus according to claim 3, characterized in that that the thickness decreases continuously from one end to the other. t t 4 4 14 H 4 t i ti 4 ti »i i i 4 it 444 «! 4 4 ·· « • · - m rt rrrc * re -Z- 6. Apparatus according to claim 3 or 4, characterized in that the ribs (5, 5 ', 5'') is provided with perpendicular / right to its longitudinal direction with - preferably arranged on both sides-transverse ribs (25) or grooves (24) .