EP0263914A2 - Housing for centrifugal machines or dust separators, and process for producing the housing - Google Patents

Abstract

To summarise, the invention proposes a housing and a process for the manufacture of such housings which consist essentially of two opposing walls together with a peripheral wall in the form of a plane spiral or helically curved structure connecting these walls, the peripheral wall being termed a radial wall (1) and the opposing walls being termed axial walls (8, 9) on the basis of the housing function, as is the case in the housings of turbo-engines, for example radial fan housings (71), or in centrifugal separators, for example cyclones (72), the radial wall (1) consisting over its entire radial wall contour (2) of a band (3) of flexible and/or resilient material stretched firstly before assembly and supported after assembly on, for example, external elements, which, for example in the form of distance pieces (32) are arranged helically between the axial walls (8,9) and fastened to them. <IMAGE>

Description

The invention relates to housings and methods for producing such housings, consisting essentially of two opposing walls and a peripheral wall which connects these walls in the form of a flat spiral or in a spiral-like manner and which, due to the housing function, functions as a radial wall and the opposing walls as axial walls are referred to, whereby in the area of the spiral center point one or both axial walls have an opening and a further opening, formed from the axial walls and the radial wall, is arranged in the spiral end area, similar to the opening in a screw housing and further the spiral end area of the housing generally as a straight line Exit or entry area is designed, depending on the direction of flow is provided based on the task of the housing, as is the case with turbo machines, for example radial compressors, radial fans, disintegrators and similar turbo machines or with centrifugal separators. for example cyclones, vortex chamber separators and similar separators, is the case.

With such housings, it is necessary to arrange a radial wall between two coaxially opposite axial walls, this radial wall being designed as precisely as possible in the form of a flat spiral or similar to a spiral.

When such housings are used in turbomachines, such as radial fans, the axial wall opposite the suction side is generally arranged on a bracket or this axial wall is physically expanded to the bracket which, in the case of a belt drive, accommodates the bearings for the rotor shaft.

Another type of radial fan provides for an electric flansc motor to be arranged on the axial wall opposite the suction side, the rotor being mounted directly on the motor journal.

However, the above-described console or the type of drive by means of an electric flange motor are not the subject of the invention and are therefore not described in more detail, nor are versions of the housing which has two suction sides, i.e. one on each axial wall.

It is known to design such housings, such as housings for radial fans, as a welded construction, with either the circumferential contour of the axial walls already having a spiral shape and the radial wall being welded between or on this circumferential contour, or the axial walls having a square or rectangular cut and between them the spiral curved radial wall is welded. In both cases, it is essential to preform the radial wall in its entirety, which is associated with a great deal of work, in particular if, owing to the size or the stress, it is necessary to work with thicker or tough materials. In addition, the effort of welding with the necessary aids, such as welding gauges, is not small.

It is also known to carry out such housings as a cast construction, in the case of plastics, as an injection-molded construction, which, however, has the disadvantage that high mold costs and tool costs arise and, moreover, the expenditure on machine tools is high, since larger workpieces can be completely machined or must be finished in another way. In addition, a variety of housing sizes cannot be realized for cost reasons, so that individual problem solutions are generally impossible.

The aforementioned types, i.e. welded construction, cast construction and injection molding construction, as well as a half-shell construction to be mentioned, made of deep-drawn sheet metal or plastic, the housing being divided approximately in the middle of its width, no longer permit a subsequent change in the housing width,

Therefore, an axial wall must have at least one opening which is so large that - in the case of fluid-flow machines with rotors - the rotor from the _- housing can be removed to such a large opening can only be dispensed when the housing is divided , which of course also comes with a high cost effort is connected.

In another known type of radial fan housing, the housing is divided in the plane of the rotor axis. In principle, this type of construction also shows the same disadvantages with regard to costs and with regard to the impossibility of subsequently changing the width.

Furthermore, the aforementioned types do not permit the exchange of the radial wall or the axial walls, which, for example in the case of radial fans which are used for the material transport, can be subjected to high wear.

In such a case, the above-mentioned types are often remedied by arranging additional wear-resistant materials in the area of the radial wall or the entire inside of the housing, which in turn adversely affects the construction costs, as well as the operating costs when these additional wear-resistant materials are renewed have to.

Furthermore, with the aforementioned types, it is only possible to manufacture housings in their entirety from materials that are either castable, sprayable or weldable to one another or deep-drawable, such as, for example, only from metallic cast materials, ceramic materials, plastics or metals or plastics that can be welded to one another or deep-drawable metallic materials or plastics.

The combination of different materials, apart from the additional arrangement of other wet materials, for example an additional highly wear-resistant material for the radial wall and another additional material for the axial walls, is therefore not possible.

The object of the invention is therefore to provide a method for producing housings of the type mentioned at the outset which eliminates the disadvantages mentioned of known manufacturing methods, such as, for example, the disadvantages which result from the imperative uniformity of the materials of the housing and those disadvantages to eliminate, which result from the fact that the axial walls form a physical unit with the radial wall and off exchange or modification of the individual parts is therefore not possible,

It is a further object of the invention to propose types of housings using the method according to the invention.

This object is achieved according to the invention in generic housings by the characterizing features of the claims.

• F i g . 1 eine Ausführungsform des Gehäuses nach der Erfindung in Seitenansicht, beispielhaft hier als Radialventilatorgehäuse ohne Gehäusekonsol und Antrieb dargestellt, mit den Axialwänden, der dazwischen angeordneten Radialwand, sowie einer Ausführung erfindungsgemäßer Fremdelemente zwischen den Axialwänden und weiter mit Ausgangsstück druckseitig und Eingangsstück saugseitig.
• Fig. 2 ein Gehäuse wie in Fig. 1, jedoch vom saugseitigen Eingangsstück her gesehen;
• Fig. 3 das Gehäuse nach Fig. 2, jedoch mit abgenommener saugseitiger Axialwand;
• F i g . 4 vergrößerter Ausschnitt aus Fig. 3, ein Detail im Austrittsbereich zeigend;
• F i g 5 vergrößerter Ausschnitt aus Fig. 3, das der Fig. 4 gegenüberliegende Detail des Austrittesbereiches zeigend;
• F i g . 6 eine Seitenansicht eines Zyklons mit Eingangsstück und den beiden Ausgangsstücken;
• F i g . 7 die Draufsicht von Fig. 6, jedoch mit abgenommener oberer Axialwand;
• F i g . 8 die Ansicht der Fig. 6 von unten;
• Fig. 9, 10, 11 und 12 in Seitenansicht je eine aus einem Band gebildete Radialwand, bereits die spätere Radialwandkontur zeigend, so, als ob die Radialwand an den entsprechend angeordneten, jedoch hier nicht dargestellten, Fremdelementen oder körpereigenen Elementen ihrer Randzonen oder der Axialwände, sich abstützen könnte, mit Ausnahme in Fig. 9 und 10, welche nur im Bereich des kleinsten Spiralradius jeweils ein Fremdelement zeigen, hier beispielhaft dargestellt in je einer unterschiedlichen Ausführungsform;
• F i g . 13, 14 und 15 einen Querschnitt des Gehäuses im Ausschnitt mit einer Axialwand und einer daran anschließenden Randzone der Radialwand, jeweils mit unterschiedlichen Ausführungsformen der Axialwand;
• F i g . 16 und 17 eine Seitenansicht des Gehäuses im Ausschnitt, eine Axialwand und den Randbereich der Radialwand zeigend, jeweils mit unterschiedlichen Ausführungsformen der Axialwand;
• F i g . 18 einen Querschnitt des Gehäuses im Ausschnitt, jedoch mit einer weiteren Ausführungsform der Axialwand;
• F i g . 19 und 20 eine andere Ausführungsform der Axialwand und der Gestaltung der Randzone der Radialwand, einmal in Fig. 19 in Seitenansicht und in Fig. 20 in Draufsicht auf eine der Axialwände, jeweils als Ausschnitt des Gehäuses dargestellt;
• F i g . 21, 22 und 23 je eine Seitenansicht des Gehäuses im Ausschnitt, welche unterschiedliche Ausführungsformen der Randzone der Radialwand zeigen, im Zusammenwirken mit der benachbarten Axialwand, wobei Fig. 21 der Deutlichkeit halber eine gelochte, aber noch nicht abgewinkelte Lasche einer Randzone der Radialwand zeigt;
• F i g . 24 bis 28 je eine Seitenansicht des Gehäuses im Ausschnitt, eine Axialwand mit der Randzone der Radialwand, mit unterschiedlichen Ausführungsformen von an der Axialwand angeordneten Fremdelementen;
• F i g . 29 und 30 je eine Seitenansicht des Gehäuses im Ausschnitt, mit Fremdelementen, welche zwischen den Axialwänden in Form von Distanzstücken angeordnet sind, jeweils in unterschiedlichen Ausführungen ihrer Querschnitte und Bauformen;
• F i g . 31 einen Schnitt der Fig. 30, geschnitten parallel zu einer Radialwand, die Art der Abstützung der Radialwand an den ebenfalls geschnittenen Fremdelementen, zeigend;
• F i g . 32 eine Seitenansicht des Gehäuses im Ausschnitt, eine andere Ausführungsform der zwischen den Axialwänden angeordneten Fremdelementen, zeigend;
• F i g . 33 bis 35 je eine Seitenansicht des Gehäuses im Ausschnitt, Fremdelemente in Form von Spannelementen zeigend, welche die Axialwände, ähnlich Zugankern, miteinander verbinden;
• Fig. 36 und 37 einen Querschnitt des Gehäuses im Ausschnitt und einen Schnitt des Gehäuses, parallel zu einer Axialwand, im Ausschnitt dargestellt, wobei jedoch an den Axialwänden ein zusätzliches Formteil angeordnet ist;
• Fig. 38 einen Querschnitt des Gehäuses im Ausschnitt, wie Fig. 36, jedoch mit einer anderen Ausführungsform eines zusätzlichen Formteiles an den Axialwänden.
• F i g . 39 und 40 je eine Seitenansicht des Gehäuses im Ausschnitt, mit Axialwänden und der dazwischen angeordneten Radialwand, mit kombinierter Anordnung von Fremdelementen unterschiedlicher Art, jeweils an Axialwänden oder diese verbindend, angeordnet;
• F i g . 41 eine Ansicht des Gehäuses ähnlich Fig. 3, mit saugseitig abgenommener Axialwand, wobei entlang der Außenseite der Radial- wand eine zusätzliche, unterstützende Verkleidung angeordnet ist;
• F i g . 42 eine Ansicht des Gehäuses im Ausschnitt ähnlich Fig. 3, jedoch noch aufgeteilt durch zwei Trennlinien in ein oberes und unteres Bruchstück, wobei im Abstand zur Außenseite der Radial- wand eine weitere Radialwand angeordnet ist und sich im ergebenden Hohlraum schall- oder wärmeisolierende Werkstoffe angeordnet sind, hier dargestellt im oberen Bruchstück der Fig. 42 und im unteren Bruchstück der Fig. 42, der sich ergebende Hohlraum von einem Fluid durchströmt wird;
• F i g . 43, 44 und 45 je einen Querschnitt des Gehäuses im Ausschnitt, mit jeweils unterschiedlicher Gestaltung bandförmiger Dichtelemente, welche an einer Randzone der Radialwand angeordnet sind.

The advantages achieved by the invention are essentially to be seen in the fact that the individual parts of the generic housing are preferably releasably connected to one another and further hereby different materials for the axial walls and the radial wall can be selected and further the housing width by any variation in the width of the Radial wall, can be determined and thus the width of the rotor can also be changed in turbomachines and further thereby, in the event of wear or repairs, the parts can be easily replaced and furthermore the subsequent replacement of individual parts with other material or physical characteristics , is possible. The invention is based on some in the F i g. 1 to 45 of the drawing of preferred embodiments illustrated in principle; show it:

• Fig. 1 shows an embodiment of the housing according to the invention in side view, exemplified here as a radial fan housing without a housing bracket and drive, with the axial walls, the radial wall arranged between them, and an embodiment of foreign elements according to the invention between the axial walls and further with an outlet piece on the pressure side and inlet piece on the suction side.
• FIG. 2 shows a housing as in FIG. 1, but seen from the inlet-side inlet piece;
• FIG. 3 shows the housing according to FIG. 2, but with the axial wall removed on the suction side;
• Fig. 4 enlarged detail from FIG. 3, a detail in the off showing step area;
• FIG. 5 shows an enlarged detail from FIG. 3, showing the detail of the outlet area opposite FIG. 4;
• Fig. 6 shows a side view of a cyclone with an inlet piece and the two outlet pieces;
• Fig. 7 shows the top view from FIG. 6, but with the upper axial wall removed;
• Fig. 8 shows the view of FIG. 6 from below;
• Fig. 9, 10, 11 and 12 in side view of a radial wall formed from a band, already showing the later radial wall contour, as if the radial wall on the correspondingly arranged, but not shown, foreign elements or body elements of their peripheral zones or the axial walls , could be supported, with the exception of FIGS. 9 and 10, which only show a foreign element in the area of the smallest spiral radius, shown here by way of example in a different embodiment;
• Fig. 13, 14 and 15 a cross section of the housing in a cutout with an axial wall and an adjoining edge zone of the radial wall, each with different embodiments of the axial wall;
• Fig. 16 and 17 show a side view of the housing in the cutout, showing an axial wall and the edge region of the radial wall, each with different embodiments of the axial wall;
• Fig. 18 shows a cross section of the housing in the cutout, but with a further embodiment of the axial wall;
• Fig. 19 and 20 another embodiment of the axial wall and the design of the edge zone of the radial wall, once in FIG. 19 in a side view and in FIG. 20 in a top view of one of the axial walls, each shown as a section of the housing;
• Fig. 21, 22 and 23 each show a side view of the housing in the cutout, which shows different embodiments of the edge zone of the radial wall, in cooperation with the adjacent axial wall, FIG. 21 showing a perforated but not yet angled tab of an edge zone of the radial wall for the sake of clarity;
• Fig. 24 to 28 each show a side view of the housing in the cutout, an axial wall with the edge zone of the radial wall, with different embodiments of foreign elements arranged on the axial wall;
• Fig. 29 and 30 each show a side view of the housing in the cutout, with foreign elements which are arranged between the axial walls in the form of spacers, each in different versions of their cross sections and designs;
• Fig. 31 shows a section from FIG. 30, cut parallel to a radial wall, showing the type of support of the radial wall on the likewise cut foreign elements;
• Fig. 32 shows a side view of the housing in a cutout, showing another embodiment of the foreign elements arranged between the axial walls;
• Fig. 33 to 35 each show a side view of the housing in the cutout, showing foreign elements in the form of tensioning elements which connect the axial walls to one another, similar to tie rods;
• 36 and 37 show a cross section of the housing in the cutout and a section of the housing, parallel to an axial wall, in the cutout, but with an additional molded part being arranged on the axial walls;
• 38 shows a cross section of the housing in the cutout, as in FIG. 36, but with another embodiment of an additional molded part on the axial walls.
• Fig. 39 and 40 each show a side view of the housing in the cutout, with axial walls and the radial wall arranged between them, with a combined arrangement of foreign elements of different types, in each case arranged on axial walls or connecting them;
• Fig. 41 is a view of the housing similar to FIG. 3, with the axial wall removed on the suction side, an additional, supporting covering being arranged along the outside of the radial wall;
• Fig. 42 is a view of the housing in a cutout similar to FIG. 3, but still divided by two dividing lines into an upper and lower fragment, with a further radial wall being arranged at a distance from the outside of the radial wall and sound or heat-insulating materials being arranged in the resulting cavity are shown here in the upper fragment of Figure 42 and in the lower fragment of Figure 42, the resulting cavity is flowed through by a fluid.
• Fig. 43, 44 and 45 each have a cross section of the housing in the cutout, each with a different design of band-shaped sealing elements which are arranged on an edge zone of the radial wall.

Otherwise, similar or corresponding components are largely designated by the same reference numerals in all the figures of the drawing and are therefore not explained again in every case. It should also be pointed out that known releasable fastening elements are not always shown fully pictorially, but rather the side view of such elements are often only shown in the form of their axis line, or in the form of an axis cross, insofar as it is a top view of these elements. It is also pointed out that for reasons of graphic representation, the radial wall, insofar as it is shown in a side view, is in some cases only drawn as a thick line in its physicality.

Reference should now be made to FIG. 1, one before drafted embodiment of a housing according to the invention in a kind of basic design in side view, applied as a radial fan housing 71, without showing a bracket or foot to or on the housing and without showing a drive and / or a bearing for the rotor axis 70.

1 further shows the rest of the rotor axis 70 protruding from the axial wall 8. Also shown is an input piece 65 which is fastened to the axial wall 9 by means of its flange. The arrow 67 shows the entry direction of the medium to be sucked in, such as air, and the arrow 68 shows the exit direction of the medium from the outlet piece 66, which is attached by means of its flange on the one hand to folds of the axial walls 8, 9 and on the other hand to the folds the ends 51, 52 of the band 3, 'and at the same time on a spacer 32 with a rectangular cross-section and - not yet visible in Fig. 1 - at the short angle of an angular spacer 48, which is additionally on the outside of the short end part 46 of the band 3 formed radial wall 1 is arranged.

FIG. 2 shows the exemplary radial fan housing 71 according to FIG. 1, but seen from the inlet piece 65. The radial wall contour 2 of the band 3, which is not visible from the outside, can be seen, which, like the thickness of the band 3, is shown with dashed lines. The known, releasable fasteners are shown as crosses. Screws are provided here as fastening elements, which hold the spacers 32 arranged between the axial walls 8, 9, as well as an angular spacer 48.

3 shows the exemplary radial fan housing 71 according to FIGS. 1 and 2 with the suction-side axial wall 9 removed. Specifically, the housing consists of two axial walls 8, 9 arranged coaxially and in parallel opposite one another and a radial wall 1 arranged between them. Between the axial walls 8, 9 spacer spacers 32, here for example made of rod material with a circular cross section, with the exception of a spacer 32 with a rectangular cross section, are arranged, the short end part 46 of the radi alwand 1 is made from an angular spacer 48, which is not connected to the rest of the radial wall 1, but only sharp-edged in the area of the smallest spiral radius 13 and the short end part 46 in the area of the end 51, is flanged and is known so close to the angular spacer 48 and further the spacers 32 have internal threads in their two end areas and the length dimension of these spacers 32 is the same or a short amount shorter than the width of the radial wall 1 formed from the band 3 and further the axial walls 8 , 9 have bores 10, the arrangement of which corresponds to that of the radial wall contour 2, but runs parallel to it, the bores 10 being penetrated by screws which in turn are screwed into the internal thread of the spacers 32 and thus on the one hand connect the axial walls 8, 9 by means of the spacers 32 is created and on the other hand hereby the Ra dialwandwand 1, formed from volume 3, lies with its outer side against the spacers 32 and is held clamped between the axial walls 8, 9. Also arranged on the housing is an inlet piece known per se in terms of its arrangement and function, on the suction side on the axial wall 8 and an outlet piece on the pressure side, fastened to the end of the outlet area 62, formed from the axial walls 8, 9 and the short end part 46 and the part opposite this the radial wall 1, the long end part 47.

The course of the arrangement of the bores 10 corresponds to the intended radial wall contour 2, which runs parallel to it, of the band 3, which is initially stretched before assembly, and is made of flexible and / or resilient material.

When assembling the radial fan housing 71 shown as an example, the spacers 32 and the additional angular spacer 48 are first attached to the axial wall 8 and then the band 3 is inserted into the contour formed by the spacers 32 and the angular spacer 48, for example by hand. In the example case shown here, the band 3 is edged only in the area of the smallest spiral radius 13, sharp-edged, beyond the elastic area, to produce a sharp edge 50, just like the ends 51 and 52 of volume 3.

After inserting the band 3 into the contour formed by the spacers 32, the complete radial wall contour 2 is finished. In the example shown here, in order to stiffen the short end part 46, an angular spacer 48 was placed on the belt 3 from the outside, this angular spacer 48, like the spacers 32, having an internal thread that screwed the spacer 48 to the axial walls 8, 9 over the holes 10, allowed.

At the end of the congresses, of course only after assembly of the rotor 69 not belonging to the invention, the axial wall 9 can be placed and screwed through the bores 10 with the spacers 32 and the angular spacer 48, due to the length of the spacers 32 and the width the angular spacer 48, which are equal in length or width dimensions equal to or smaller than the width of the band 3, is by screwing the axial walls 8 and 9 with the spacers 32 and the angular spacer 48, which are formed from the band 3 Radial wall 1, held clamped, such that a deformation of the radial wall thus formed is not possible due to use of the operation of the radial fan. Adequate rigidity of the radial wall is thus achieved on the one hand by its support on the spacers 32 and the angular spacer 48 shown here by way of example, and further by a sufficient rigidity of the band 3, parallel to its width 7, this rigidity being achieved by the elastic bending of the Volume 3 in the form of a flat spiral, is increased. In order to increase this rigidity even further, it is provided according to the invention that the band 3 has the maximum thickness which permits the production of the smallest radius 12 of the radial wall contour 2 achieved by elastic deformation.

In the exit area 62, that is also in the area of the ends 51, 52 of the band 3, these ends 51, 52 are flanged at an angle, for the purpose of fixing together with the spacer 32 rectangular cross-section, on one side of the exit area 62 and the short angle of the angular distance Stuckes 43, on the other side of the outlet area 42, with the flange of a known starting piece 66. The parts are fixed to each other by means of screws, not shown, only their axis lines are shown, and the bevels of the ends 51, 52 of the band 3rd , are provided with holes, not shown, which are penetrated by the screws.

FIG. 4 shows the enlarged detail 73 from FIG. 3, which shows a detail of the outlet area 62 and the long end part 47. It can clearly be seen how the end 52 of the long end part 47 is folded and between the flange of the starting piece 66 and the spacer 32 with a rectangular cross section, is arranged and is fixed in this way.

FIG. 5 further shows the enlarged detail 74 from FIG. 3, which represents a detail of the exit region 62 and the short end part 46, with an angular spacer 48, which is applied to the outside of the band 3 to support it. Here, too, the end 51 of the short end part 46 is folded and arranged between the flange of the starting piece 66 and the short angle of the angular spacer 48 and thus fixed.

6 shows a side view of a cyclone with inlet piece 65 and the upper outlet piece 66, both of which are adapted to the housing according to the invention by means of a flange. The lower exit piece, which is generally tapered in part, is shown broken off.

Spacers 32 are arranged between the axial walls 8, 9, on which the radial wall 1 formed from a band 3 is supported and which at the same time connect the axial walls 8, 9 and thus hold the radial wall 1 in a clamped manner.

FIG. 7 shows the top view of FIG. 6, but with the upper axial wall 9 removed. Similar to FIG. 3, the radial wall formed from a band 3, which is supported on the spacers 32, can be clearly seen, in the example here, also again as in Fig. 3, the radial wall 1 made from a band 3 in Area of the smallest spiral radius 13, sharp-edged, is folded over the elastic area, for the purpose of creating a sharp edge 14, which therefore represents the smallest radius 12 of the radial wall contour 2. Likewise, the ends 51, 52 are sharp-edged, folded over the elastic region, and the flange-like ends of the band 3 thus formed are kept clamped between the flange of the inlet piece 65 on the one hand and the short angles of the angular spacers 48, 49 on the other hand.

As an example, in contrast to FIG. 3, an angular spacer 49 is arranged on the outside of the band 3 in the region of the long end part 47, this being releasably fastened between the axial walls 8, 9 and the long end of the angular spacer 49 ends in the area of the largest spiral radius 14.

Fig. 8 shows the view of Fi.g. 6 seen from below. The lower exit piece 66 of the cyclone is fastened to the axial wall 8 by means of a flange, similar to the entry piece 65 in FIG. 1.

Fig. 9 shows the radial wall 1 formed from a band 3 in a manner as if it was already supported on the body's own elements of the axial walls 8, 9, not shown, such as continuous groove 15 or continuous bead 16 or continuous shoulder 17 or bridge hole-like Punchings 19 or flap-shaped punchings 20 or already supported on foreign elements of the axial walls 8, 9, such as protruding pins 24, protruding threaded parts 25 or bolts 26 or rivets 27 or screw ends 28 or screw heads 29 or drive-in pins 30 or pins 31, spacers 32, 33, 34, 35 or clamping bolts 37 or foreign elements, such as molded parts 41, 42.

9 further shows a tubular shaped part 44, which is arranged in the area of the smallest spiral radius 13 on the outside of the radial wall 1 formed from a band 3, between the axial walls 8, 9, the side of the tubular shaped part 44 facing the radial wall 1 , determines the radial wall contour 2 in the region of the smallest spiral radius 13.

In this example shown in FIG. 9, it is provided, without showing this in the drawing, that a maximum thickness of the band 3 is selected so that the smallest radius 12 of the radial wall contour 2 achieved by the elastic deformation, here determined by the outer diameter of the tubular Shaped part 44, an elastic deformation of the band 3 allows, this takes place in the just allowed elastic range of the band 3 and thus plastic deformation of the band 3 is prevented in any case.

Of course, it is also conceivable that in the case of FIG. 9 with the tubular shaped part 44, the band 3 was preformed plastically at the point at which it is later supported on the tubular shaped part 44. In such a case, the maximum thickness of the band 3 can only be selected according to the dependencies from the width 7 of the band and from the smallest spiral radius 13, which then enables an even greater thickness of the band 3 than in the case described above.

FIG. 10 shows the detail 75 from FIG. 9, but instead of the tubular shaped part 44, here a disk-shaped shaped part 45, of which one piece is arranged on the mutually facing sides of the axial walls 8, 9. Like the tubular molded part 44, the disc-shaped molded parts 45 are also preferably arranged detachably on the axial walls 8, 9.

FIG. 11 shows a representation of the radial wall 1, similar to FIG. 9, but with a sharp edge 50 in the area of the smallest spiral radius 13, which was produced by sharp-edged bending of the band 3 beyond its elastic area. 11, similar to FIGS. 3 and 7, shows the ends 51, 52 of the band 3, which are also bevelled, beyond their elastic range. Such a sharp edge 50 is generally desirable in radial fans or similar turbomachines, when high pressures are to be achieved with good efficiency.

It is also conceivable that the straight, long end portion 47 of the radial wall 1 formed from a band 3, as a continuation of the essentially spiral radial wall contour 2 is formed, that is, beginning in the region of the largest spiral radius 14 of the radial wall 1, the short end part 46 of the radial wall 1 also adapting in this case to the contour of a spirally formed long end part 47.

FIG. 12 shows a representation of the radial wall 1, similar to FIG. 11, but without the short end part 46 and long end part 47 formed from band 3, which here by an angular spacer 48, for the short end part 46 and by an angular spacer 49 , here for the long end 47, are replaced.

In the case shown, the short end part 46 of the radial wall 1 ends in the region of the smallest spiral radius 13, the angular spacer 48 being directly connected at the common point of contact. The radial wall 1 ends further in the area of the largest spiral radius 14, the angular spacer 49 directly adjoining here. It is conceivable that the respective ends of the radial wall 1, in the area of the connection to the angular spacers 48, 49, are bent in a flange-like manner, in order to enable a better mechanical connection in the common contact area or are also welded to one another.

Fig. 13 shows a cross section of the housing in the cutout, here for example with axial wall 8, which has a continuous groove 15 as the body's own element, as well as the opposite axial wall 9, not shown, the edge zones 5, 6 of the band 3 in the respective continuous Engage groove 15 and the radial wall 1 formed from a band 3 is supported here in a form-fitting manner. The respective continuous groove 15 of the axial walls 8, 9 has a course parallel to the radial wall contour 2 provided.

The axial wall 8 shown shows a cut bore 10 as the body's own element of the axial wall 8, which either serves to receive a screw, not shown, known per se, with which the spacers 32 or spacers 35, not shown here, are detachably fastened or the bore 10 of the receptacle of threaded pin 60 or smooth pin 36 is used, which are part of spacers 33 or spacers 34, which, like the spacers 32, 35, are arranged between the axial walls 8, 9 or further serve the bores 10 for receiving clamping bolts 37.

FIG. 14 shows a cross section of the housing in a cutout, similar to FIG. 13, but here the axial walls 8, 9 each have a continuous bead 16 as the body's own elements, into which the edge zones 5, 6 of the band 3 are supported in a form-fitting manner.

FIG. 15 shows a cross section of the housing in a cutout, similar to FIG. 13, but here the axial wall 8 and the axial wall 9, not shown, each have a continuous shoulder 17 as the body's own elements, against which the edge zones 5, 6 of the band 3 support.

16 shows a side view of the housing in a cutout, showing a detail of the axial wall 8 and the radial wall 1, the axial wall 8, as well as the axial wall 9, not shown, having the body's own elements in the form of punched holes 19, against which the edge zones 5 are located , 6 of the volume 3 support.

FIG. 17 shows a side view of the housing in a cutout similar to FIG. 16, but with a different design of the hole-like punchings 19, formed here, as in the case of bridge hole sieves known per se.

Fig. 18 shows a cross section of the housing in a cutout, similar to Fig. 13, wherein here the axial wall 8, as well as the opposite, not shown axial wall 9, have tab-shaped punchings 20 as the body's own elements, against which the edge zones 5, 6 of the band 3 support.

19 shows a side view of the housing in a cutout, similar to FIG. 16. Only the axial wall 8 is shown, which is partially cut open to clearly show one of the openings 23, which here, as the body's own element of the axial wall 8, is penetrated by an outstanding tab 22, which is then deformed in its end region so that it no longer emerges from the opening 23 can be removed in order to establish a connection between the radial wall 1 and the axial walls 8, 9.

FIG. 20 shows another view of the housing from FIG. 19, seen from the axial wall 9. The protruding tabs 22 of the radial wall 1 deformed in their end region can be clearly seen. 20 also shows part of the bores 10, the course of which is arranged parallel to the radial wall contour 2. These bores 10 can be penetrated by foreign elements of the axial walls 8, 9, against which the radial wall 1 is additionally supported. However, bores 10 of foreign elements of the axial walls 8, 9 can also be passed through, which exclusively connect the axial walls 8, 9 to one another and thus additionally hold the radial wall 1 arranged therebetween in a clamping manner.

In the case shown in FIG. 20, the bores 10 serve to receive foreign elements of the axial walls 8, 9, which connect them to one another, such as clamping bolts 37. Depending on the diameter of these clamping bolts 37, they also touch the outside of the band 3 formed Radial wall 1 and support it additionally, the generation of the radial wall contour 2 being generated in this case from the interaction of the arrangement of the openings 23 of the axial walls 8, 9 with the projecting tabs 22 of the radial wall 1. Of course, it is also conceivable that the clamping bolts 37 are completely eliminated, as are the bores 10 shown in FIG. 20.

21 shows a side view of the housing in a cutout, shown here by way of example on the axial wall 8, the radial wall 1 made from a band 3 having at its edge zones 5, 6 the body's own elements which are designed in the form of angled, perforated tabs 21. For clarity shows

Fig. 21 is a perforated tab 18 which is not yet angled. The angled, perforated tabs 21 are arranged in a predetermined division relative to one another at the edge zones 5, 6 of the band 3, like the protruding tabs 22 from FIGS. 19 and 20. In the same division, bores 10 are again arranged in the axial walls 8, 9 here , the course of which is in turn arranged parallel to the radial wall contour 2 provided. The angled, perforated tabs 21 are connected to the axial walls 8, 9 with connecting elements, in the case shown with rivets 27. Instead of the rivet 27, detachable connecting elements could also advantageously be used.

22 shows a side view of the housing in a cutout, again only showing the axial wall 8 and part of the edge zone 5 of the band 3. The edge zones 5, 6, i.e. also the edge zone 6 of the band 3, not shown, have foreign elements in the form of protruding pins 24, which in principle assume the same tasks in cooperation with the axial walls 8, 9 as the protruding tabs 22 from FIG. 19 and 20. A deformation of the end region of the protruding pins 24 would also be conceivable, but this would require a protrusion beyond the outside of the axial walls 8, 9. In the case described, a connection of the axial walls 8, 9 is provided by means of clamping bolts 37, not shown. Furthermore, it is conceivable that the protruding pins 24 enter into a pair of fits with the bores 10, which ensures a sufficient firm connection of the protruding pins 24 with the bores 10.

The individual, opposite, protruding pins 24 can also have a common physicality, so that they would be combined into a single piece and this would have a length that consists of the width 7 of the band 3 plus the two protrusions, right and left of Edge zones 6, 7 of the band 3, composed. It is intended to solder or weld the protruding pins 24 onto the radial wall 1 formed from a band 3.

Fig. 23 shows a side view of the housing in detail with ge cut axial wall 8. On the radial wall 1 made from a band 3, at its edge zones 5, 6, similar to the projecting pins 24 from FIG. 22, projecting set screws 25 are arranged, the thread ends of which are in the bores 10 of the axial wall 8 and the one not shown Insert the axial wall 9 to be screwed there against the axial walls 8, 9 by means of threaded nuts.

24 shows a side view of the housing in a cutout, here again by way of example only illustrating the axial wall 8 with part of the radial wall 1. In the axial wall 8, as well as in the opposite, not shown, axial wall 9, bolts 26 are arranged, which in turn are inserted into bores 10. As is basically the case with all the exemplary designs of the axial walls 8, 9 shown so far, the arrangement of the bores 10 is also provided here parallel to the radial wall contour-2, the radial wall 1 formed from a band 3 leaning against or supporting the bolts 26 arranged in this way the desired radial wall contour 2 of the radial wall 1 is created.

Not shown here are clamping bolts 37 which connect the axial walls 8, 9 to one another and thus hold the radial wall 1 arranged therebetween in a clamping manner. Such clamping bolts 37 can occasionally pass through the bores 10 instead of the bolts 26, in which case the radial wall 1 is supported on the clamping bolt 37 over its entire width 7. The clamping bolts 37 can, however, also pass through separate bores, not shown here, of the axial walls 8, 9, the arrangement of which does not necessarily run parallel to the radial wall contour 2 provided,

25 to 27 also show a side view of the housing in a cutout, similar to FIG. 24, but here instead of the bolts 26 according to FIG. 24, rivets 27 are provided in FIG. 25, screw ends 28 in FIG. 26 and in FIG 27 drive-in pins 30, which take over the function of the bolts 26 from FIG.

FIG. 28 shows a side view of the housing in a cutout, again similar to FIG. 24, but with a partially cut axial wall 8. In the case shown here by way of example, screws, which bores 10 pass through, pins 31 are fastened to the axial walls 8, 9, against which the radial wall 1 formed from a band 3 is supported.

Of course, welded-on pins in an appropriate arrangement are also conceivable.

FIG. 29 shows a side view of the housing in a detail, showing both axial walls 8, 9 and the radial wall 1 arranged between them, which is supported on spacers 32, as in FIGS. 1 to 5. These are arranged and have between the axial walls 8, 9 In its end region there are internal threads which are used for fastening to the axial walls 8, 9 by means of screws, the screws passing through the bores 10 of the axial walls 8, 9.

Such a design of the housing according to the invention is always advantageous when a high level of physical stability of the housing is required and / or when the thickness of the band 3 cannot be chosen to be greater because of the production of the smallest radius 12 of the radial wall contour 2 to be achieved by elastic deformation . In this case, an undesirable elastic deformation of the band 3, parallel to the axial walls 8, 9 is prevented by the fact that on the one hand the band 3 can be supported on the spacers 32 over its entire width 7 and on the other hand the length dimension of the spacers 32 is the same or a is slightly shorter than the width 7 of the band 3.

30 and 31 show, on the one hand, a side view of the housing in the cutout and, on the other hand, a section of the housing, with the cutting plane parallel to the axial walls 8, 9, in the case shown showing the axial wall 9.

In FIG. 30, foreign elements are again arranged in detail, as in FIG. 29, but in the form of the spacers 33, which, in contrast to the spacers 32, in their end regions have studs which are offset from the rest of the diameter and which are designed as threaded studs 60 are and these pass through the holes 10 of the Axiali walls 8, 9 and by means of threaded nuts against the

Axial walls 8, 9 are secured.

The spacers 33 shown here with their threaded pin 60 are made here, for example, from a rod material of rectangular cross section, visible in section in FIG. 31, so that the radial wall 1 formed from a band 3 is supported on the narrow side of the cross section of the spacers 33. By selecting the cross-section of the spacers 33, high rigidity is also achieved in the edge zones of the axial walls 8, 9, which has an advantageous effect in housings according to the invention, for example in radial fan housings 71 of a larger type.

Of course, angular cross-sections would also be conceivable for the spacers 33, such as spacers 35 or any other cross-section of commercially available rod materials, depending on how it is expedient for the construction task.

32 shows a side view of the housing in a cutout with a partially cut axial wall 8, similar to FIG. 29. In contrast to the spacers 33, the spacers 34 shown here have a circular cross section, the upper spacer 34 in FIG. 32 being a has a peg-shaped, offset element in the form of a smooth peg 36 with a shaft securing element and the lower, here by way of example, a threaded peg 60, which is secured by means of a threaded nut against the axial wall 8, the bore 10 of which passes through.

33 again shows a side view of the housing according to the invention in a detail, showing the two axial walls 8, 9 with the radial wall 1 held in between them. In the example shown here, the axial walls 8, 9 are connected by means of clamping bolts 37, each of which has an end area Have threaded part 38. The threaded parts 38 in turn pass through bores 10 of the axial walls 8, 9 and are secured against them by means of threaded nuts.

Of course, the clamping bolts 37 could be replaced by correspondingly long commercially available screws.

34 and 35 show an illustration of the housing according to the invention similar to FIG. 33, but with a different design of the clamping bolts 37. In FIG. 35, the tensioning bolts 37 have a collar 40 in one end region, in contrast to the tensioning bolts 37 in FIG. 34 and a smooth part 39 in the other end region, which is provided by means of a shaft securing element known per se, such as a gripping ring or So-called clamping disc or by means of a serrated ring, is secured against one of the axial walls 8, 9. Of course, a design of the smooth part 39 is also conceivable, in which it has a groove for receiving shaft locking rings known per se.

This embodiment of clamping bolts 37 is expedient and economical in the light construction of housings according to the invention.

36 and 37 show on the one hand a section of a housing according to the invention similar to FIG. 13 and on the other hand the partial representation of the housing cut parallel to the axial walls 8, 9, with a foreign element in the form of the molded part each on the mutually facing sides of the axial walls 8, 9 41 is arranged. This molded part 41 is preferably substantially matched to the axial walls 8, 9 with its outer circumferential contour and has a recess 43 with a circumferential contour that runs parallel to the radial wall contour 2 such that the outside of the radial wall 1 made from a band 3 supported in it.

The bores 10 pass through both the axial walls 8, 9 and both molded parts 41 and are suitable both for receiving, for example, clamping bolts 37 or, for example, for arranging spacers 32 with screws or spacers 34 with threaded pins 60. In the case of the arrangement of clamping bolts 37, threaded nuts are to be arranged both on the outer sides of the axial walls 8, 9 and on the mutually facing sides of the molded parts 41. Of course, it is also conceivable that these molded parts 41 cannot be detachably connected to the axial walls 8, 9, which would not hinder the easy dismantling of a housing according to the invention into axial walls 8, 9 on the one hand and radial wall 1 on the other hand.

FIG. 38 shows a section of the housing, similar to FIG. 36, but instead of molded parts 41, here showing molded parts 42.

These have an outer circumferential contour that matches the Internal shape of the proposed radial wall contour 2 is congruent. As a result, the radial wall 1 can be supported on the circumferential contour of the shaped parts 42 designed in this way.

Here, too, a non-releasable connection between molded parts 42 and axial walls 8, 9 is conceivable, similar to molded parts 41.

Shaped parts 42, although not shown, are congruent with regard to the required bores and openings in the axial walls 8, 9, for example also with the bore 11 of the axial wall 8 or the axial wall 9.

Fig. 39 shows a side view of a further housing according to the invention in a detail, exemplifying a combination of FIGS. 16 and 29 represents. The axial walls 8, 9 here have punched holes 19 similar to bridges, the arrangement of which is provided parallel to the radial wall contour 2, the edge zones 5, 6 being supported on these endogenous elements of the axial walls 8, 9. For the purpose of clamping holding of the radial wall 1 arranged between the axial walls 8, 9, spacers 32 are arranged here by way of example, which are fastened to the latter by means of screws via bores 10 of the axial walls 8, 9.

Such perforations 19 similar to bridge holes are known, for example, from precision engineering, but in particular, however, from screening technology.

FIG. 40 shows a side view of a housing according to the invention in a cutout, other foreign elements being arranged here as an example on the axial wall 8 than on the right in FIG. 40 on the axial wall 9.

The axial wall 8 here shows, by way of example, a combination of FIGS. 25 and 33, together with clamping bolts 37.

The axial wall 9, on the right side of FIG. 40, shows examples of foreign elements of the axial wall 9 in the form of screw heads 29, on which the edge zone 6 of the radial wall 1 is supported. Rivets 27 and screw heads 29 are arranged in bores 10, the bores 10, for the arrangement of the screw heads 29, not yet having threads. As shown, in this case only a few exemplary clamping bolts 37 are required, which also pass through bores 10 and thus the axial walls 8, 9 Connect with each other, depending on the diameter of the clamping bolt 37, these also support the radial wall 1 over its entire width 7.

FIG. 41 shows another embodiment of a housing according to the invention with the axial wall 9 removed, similar to FIG. 3. On the outside of the radial wall 1, which here, for example in the area of the smallest spiral radius 13, is sharp-edged to produce a sharp edge 50 a panel 53 is arranged, which has, for example, a corrugated sheet-shaped profile, the profile extending transversely to the band 3 and further the panel 53 having the same width as the width 7 of the band 3.

Furthermore, the cover 53 is preferably arranged adjacent to the outside of the radial wall 1, so that the radial wall 1 can be supported on the cover 53. The bores 10 of the axial walls 8, 9 are arranged here in such a way that, for example, spacers 32 or clamping bolts 37 arranged therebetween are used at the same time for supporting and fixing the radial wall 1 and the cladding 53.

Such an embodiment of a housing according to the invention enables a high degree of dimensional stability to be achieved with a simultaneously low weight and a high number of support points for the outside of the radial wall 1.

42 shows a section of a housing according to the invention, shown in section in the sectional plane parallel to the axial walls 8, 9.

In the illustrated case, a further radial wall 54 according to the invention, formed from a band 3, is arranged around the radial wall 1 and at a distance from it, forming a cavity 55.

The upper half of FIG. 42 shows this cavity 55 filled with sound or heat insulating material 56. The lower half of FIG. 42 shows a cavity 57 with a fluid 57 flowing through it.

The arrangement of sound-insulating material can be expedient when using the housing according to the invention as a radial fan housing 71 in order to reduce noise emissions from the housing. As well The arrangement of heat-insulating material can be expedient if heat losses of a medium, which is promoted, for example, in a radial fan housing 71, are to be avoided. A flow 57 through the cavity 55 can also be expedient if, depending on the type and / or temperature of the fluid 57, temperature losses of the medium to be conveyed are avoided or temperature changes of this medium are desired.

In the illustrated case, the axial walls 8, 9 are connected by spacers 35, which at the same time serve here as examples for the support for the radial wall 1 and the radial wall 54. The cross section of the spacers 35 is here, for example, angular, these angles having cutouts 76 which are penetrated either by the sound or heat insulating material 56 or the fluid 57.

43 to 45 show sections of the housing, similar to FIG. 13, each with a different arrangement of band-shaped sealing elements, once as a band 58 with an angular cross section in FIG. 45 and once as a band 59 with a cup-shaped cross section in FIGS. 43 and 44. The bands 58 and 59 seal the edge zones 5, 6 of the radial wall 1 from the axial walls 8, 9, with band 60 being inserted in the continuous groove 15 of the axial wall 8 in FIG. 43.

A high degree of tightness of the housing according to the invention can be achieved by arranging bands 58 or 59. 43 to 45 show bore 10 only by way of example, without depicting foreign elements of the axial walls 8, 9 arranged thereon or therein.

LEGEND

• 1 radial wall
• 2 radial wall contour
• 3 volume
• 4 cross section, thinnest
• 5 edge zone
• 6 edge zone
• 7 width
• 8 axial wall
• 9 axial wall
• 10 hole
• 11 hole
• 12 radius, smallest
• 13 spiral radius, smallest
• 14 spiral radius, largest
• 15 groove, continuous
• 16 beads, continuous
• 17 deposition, continuous
• 18 tab, perforated, not yet angled
• 19 Punching out, like a hole
• 20 punching, tab-shaped
• 21 tab, angled and perforated
• 22 tab, outstanding
• 23 breakthrough
• 24 pen, superior
• 25 threaded part, outstanding
• 26 bolts
• 27 rivet
• 28 screw end
• 29 screw head
• 30 impact pin
• 31 cones
• 32 spacer
• 33 spacer
• 34 spacer
• 35 spacer
• 36 cones, smoother
• 37 clamping bolts
• 38 threaded part
• 39 part, smoother
• 40 bunch
• 41 molded part
• 42 molded part
• 43 recess
• 44 molded part, tubular
• 45 molded part, disc-shaped
• 46 end part, short
• 47 end part, longer
• 48 spacer, angular
• 49 spacer, angular
• 50 edge, sharp
• 51 end
• 52 end
• 53 paneling
• 54 radial wall, others
• 55 cavity
• 56 Material, sound or heat insulating
• 57 fluid
• 58 band, angular cross-section
• 59 tape, cup-shaped cross-section
• 60 threaded pins
• 61 compression range
• 62 Exit area
• 63 spiral end region
• 64 spiral center
• 65 entrance piece
• 66 starting piece
• 67 arrow (entry)
• 68 arrow (exit)
• 69 rotor
• 70 rotor axis
• 71 Centrifugal fan housing
• 72 cyclone
• 73 detail
• 74 detail
• 75 neckline
• 76 recess

Claims (18)

1. Housing, consisting essentially of two opposing walls and a peripheral wall connecting these walls in the form of a flat spiral or spiral-like, which walls are referred to as the radial wall and the opposing walls due to the housing function, the axial center, in the area of the spiral center One or both axial walls have an opening and a further opening, formed from the axial walls and the radial wall, is arranged in the spiral end area, similar to the opening in a screw housing, and furthermore the spiral end area of the housing is usually designed as a straight exit or entry area, depending after the flow direction is provided based on the task of the housing, as is the case with turbomachines, for example radial compressors, centrifugal fans, disintegrators and similar turbomachines or with centrifugal separators, for example cyclones, swirl chamber separators and similar Absc Heidern, is the case, characterized in that the radial wall (1) consists of a band (3) made of flexible and / or resilient material and this is held between the axial walls (8, 9) by clamping and / or attached to it, whereby in or on the opposite sides of the axial walls (8, 9), foreign elements in the form of peg-shaped or pin-shaped elements, such as bolts (26) and / or rivets (27) and / or screw ends (28) and / or screw heads (29 ) and / or drive-in pins (30) or similar connecting elements, the bores (10) passing through them as the body's own elements of the axial walls (8, 9) and the radial wall (1) made from the band (3) with its edge zones (5, 6) on these peg-shaped or pin-shaped elements, such as bolts (26), rivets (27), screw ends (28), screw heads (29) and Impact pins (30) or similar elements, supported or arranged on the opposite sides of the axial walls (8, 9), foreign elements in the form of pins (31) by means of connecting elements known per se, preferably detachable, wherein these connecting elements have bores ( 10) of the axial walls (8, 9) and the radial wall (1) made from a band (3) is supported with its edge zones (5, 6) on these pins (31) or between the axial walls (8, 9), foreign elements in the form of spacers (32, 35) made of rod materials with a tubular or circular or polygonal cross-section, and the radial wall (1) made from the band (3) with its entire width (7) is attached to the spacers (32, 35) supports and wide r preferably at least the end region of the spacers (32, 35) has an internal thread and these spacers (32, 35) are connected to the axial walls (8, 9) by means of screws, the screws passing through the bores (10) and further the length dimension of the - Spacers (32, 35) are the same or a short amount shorter than the width of the band (3) and thus the radial wall (1) made from the band (3) is held clamped between the axial walls (8, 9) or between the axial walls (8, 9) foreign elements in the form of spacers (33, 34) made of rod materials with tubular or circular or polygonal cross-section are arranged and further in the end region of these spacers (33, 34) are arranged, cone-shaped elements separated from their remaining diameter , which pass through the bores (10) of the axial walls (8, 9), and which are designed as threaded studs (60) or as smooth studs (36) and these by means of threaded nuts or shaft locking elements elements are secured and further the length dimension of the non-offset part of the spacers (33, 34) is the same or a small amount shorter than the width (7) of the band (3) and thus the radial wall (1) produced therefrom between the axial walls ( 8, 9) is held clamped or the bores (10) are penetrated by foreign elements in the form of clamping bolts (37), their opposite ends being a Have threaded part (38) or a smooth part (39) or one of these ends each have a collar (40), the threaded part (38) by means of a nut or the smooth part (39) is secured by means of a shaft locking element, so that the radial wall (1) produced from a band (3) is held clamped between the axial walls (8, 9) and / or in the region of the smallest spiral radius (13) on the outside of the radial wall (1) formed from a band (3), between the axial walls (8, 9), a foreign element in the form of a tubular shaped part (44) is arranged, the smallest radius (12) of the radial wall contour (2), in the region of the smallest spiral radius (13), being attached to the tubular shaped part (44 ) supports, preferably over its entire course adjusts to the outer diameter of the tubular molded part (44) facing it, or in the region of the smallest spiral radius (13) on the outside of the radial wall (1) formed from a band (3), on which the opposite opposite sides of the axial walls (8, 9), foreign elements are arranged in the form of a disk-shaped molded part (45), the smallest radius (12) of the radial wall contour (2) in the area of the smallest spiral radius (13), with its edge zones ( 5, 6) is supported on the disk-shaped molded parts (45), preferably adjusts over its entire course to the peripheral contour of the disk-shaped molded parts (45) facing it, or the mutually facing sides of the axial walls (8, 9) each have a foreign element in the form of the molded part ( 41), whereby this shaped part (41) preferably adapts essentially with its circumferential contour to the axial walls (8, 9) and each of the two shaped parts (41) further has a recess (43), the shape of which is parallel to the radial wall contour (2 ) runs and the radial wall (1) made from a band (3) is supported with its edge zones (5, 6) in the recess (43) of the molded parts (41) and / or the sides of the axial walls (8, 9) each have a foreign element in the form of the molded part (42), each of the two molded parts (42) having an outer circumferential contour which is identical to that of the inner contour of the radial wall contour (2) provided and the radial wall made from a band (3) (1) is supported with its edge zones (5, 6) on the outer circumferential contour of the molded parts (42) and / or the axial walls (8, 9) as The body's own elements each have a continuous groove (15) into which the edge zones (5; 6) of the band (3) engage or the axial walls (8, 9) as body's own elements each have a continuous bead (16) into which the edge zones (5, 6) of the band (3) engage or the axial walls (8, 9) as the body's own elements have partial deformations in the form of punctiform and / or short linear beads, against which the edge zones (5, 6) of the band (3 ) support or the axial walls (8, 9) as the body's own elements each have a continuous shoulder (17) against which the edge zones (5, 6) of the band (3) are supported or the axial walls (8, 9) as body's own elements bridge-hole-like Have punched holes (19) against which the edge zones (5, 6) of the band (3) are supported, or the axial walls (8, 9) have tab-shaped punched holes (20) as the body's own elements, against which the edge zones (5, 6) of the band (3) or the one made from a band (3) llte radial wall (1) at its edge zones (5, 6) has body-own elements, which are designed in the form of protruding tabs (22) which are arranged in a certain division from one another and these tabs (22) in body-specific elements in the form of Openings (23) of the axial walls (8, 9) engage, these openings (23) being arranged parallel to the intended radial wall contour (2) and the tabs (22) preferably projecting beyond the outside of the axial walls (8, 9) and the protruding parts are deformed in a suitable manner in such a way that they can no longer pass through the openings (23) or the radial wall (1) formed from a band (3) has body-specific elements at its edge zones (5, 6), which are in the form of angled, Perforated tabs (21) are formed, which are arranged in a certain division to each other and these tabs (21) are connected to the axial walls (8, 9) by means of known, preferably detachable, connecting elements, wherein these connecting elements pass through the body's own elements in the form of bores (10) of the axial walls (8, 9), the course of which in the predetermined division is arranged parallel to the radial wall contour (2) provided or the radial wall (1) made from a band (3) its edge zones (5, 6) has foreign elements in the form of protruding pins (24) which are in a certain division from one another are arranged and these engage in the body's own elements in the form of bores (10) of the axial walls (8, 9), the bores (10) being arranged in the predetermined division parallel to the intended radial wall contour (2) or which consist of a band (3) manufactured radial wall (1) at its edge zones (5, 6) foreign elements in the form of protrude the threaded parts (25), which are arranged in a certain pitch to each other and these threaded parts (25) in the body's own elements in the form of bores (10) Axial walls (8, 9) engage, the bores (10) being arranged in the predetermined division parallel to the intended radial wall contour (2) and further the threaded parts (25) protrude beyond the outer sides of the axial walls (8, 9) and countered there by means of threaded nuts the axial walls (8, 9) are screwed together. 2. Housing according to claim 1, characterized in that the radial wall (1) produced from the band (3) in the area of the smallest spiral radius (13), is sharp-edged, bent over the elastic area, in order to produce a sharp edge (50 ). 3. Housing according to claim 1, characterized in that the radial wall (1) ends in the region of the smallest spiral radius (13) and this short end part (46) of the radial wall (1) is designed as an angular spacer (48) and this preferably has a width equal to the width (7) of the band (3) and further the angular spacer (47) is connected to the axial walls (8, 9), preferably releasably, this at the common point of contact with the radial wall (1), is preferably sharp-edged and / or the radial wall (1) ends in the region of the largest spiral radius (14) and this long end part (47) of the radial wall (1) is designed as an angular spacer (49) and this is preferably the same width that of the band (3) and further the angular spacer (49) with the axial walls (8, 9), preferably releasably, is connected. 4. Housing according to claim 1 and 2, characterized records that an angular form. Spacer (48) in the area of the short end part (46) of the radial wall (1), on the outside of which, preferably detachably, is arranged between the axial walls (8, 9) and / or an angular spacer (49) in the area of the long end part ( 47) of the radial wall (1), on the outside of which, preferably releasably, is arranged between the axial walls (8, 9). 5. Housing according to claim 1 and / or one of claims 2 to 4, characterized in that the radial wall (1) at its ends (51, 52) is sharp-edged, bent over the elastic region. 6. Housing according to claim 1 and / or one of claims 2 to 5, characterized in that part of the bores (10) of the axial walls (8, 9) each of bolts (26) and / or rivets (27) and / or Screw ends (28) and / or screw heads (29) and / or drive-in pins (30) and / or pins (31) are penetrated and another part of the bores (10) for fastening spacers (32) or spacers (33) or Spacers (34) or spacers (35) or clamping bolts (37), is used. 7. Housing according to claim 1 and / or one of claims 2 to 5, characterized in that the bores (10) of clamping bolts (37) are penetrated, which are secured against the axial walls (8, 9) with threaded nuts and / or between the axial walls (8, 9) spacers (32) or spacers (33) or spacers (34) or spacers (35) are arranged and thus hold the radial wall (1) between the axial walls (8, 9) clamping. 8. Housing according to claim 1 and / or one of claims 2 to 7, characterized in that the band (3) consists of a flexible and / or resilient composite material. 9. Housing according to claim 1 and / or one of claims 2 to 7, characterized in that the band (3) consists of flexible and / or resilient sandwich material. 10. Housing according to claim 1 and / or one of claims 2 to 7, characterized in that the band (3) consists of rubber-elastic material. 11. Housing according to claim 1 and / or one of claims 2 to 10 characterized in that one and / or both axial walls (8, 9) consists of a non-metallic material. 12. Housing according to claim 1 and / or one of claims 2 to 11, characterized in that, preferably over the entire course of the outside of the radial wall (1), a, preferably adjacent, cladding (53) is arranged, said cladding (53) is corrugated or zigzag or trapezoidal and the profile of this cladding (53) extends transversely to the band (3) and has a width equal to the width (7) of the band (3). 13. Housing according to claim 1 and / or one of claims 2 to 12, characterized in that at least one further radial wall (54) according to the invention, formed from a band (3) around the radial wall (1) and at a distance therefrom, a cavity ( 55) is arranged. 14. Housing according to claim 13, characterized in that sound or heat insulating materials (56) are arranged in the cavity (55). 15. Housing according to claim 14, characterized in that the cavity (55) is flowed through by a fluid (57) and the further radial wall (54) and / or the axial walls (8, 9), inlet and outlet openings for the fluid ( 57) have. 16. Housing according to claim 1 and / or one of claims 2 to 15, characterized in that the edge zones (5, 6) of the radial wall (1) formed from a band (3) and / or the further radial wall (54), wholly or partly of a band (59) of angular cross-section, preferably of a band ( 60) cup-shaped cross section. 17. Housing according to one of the preceding claims 1 to 16, characterized in that the band (3) has a maximum thickness which allows the production of the smallest radius (12) of the radial wall contour (2) achieved by elastic deformation. 18. The method according to any one of claims 1 to 17 for the production of housings, consisting essentially of two opposite walls and a peripheral wall in the form of a flat spiral or spiral-like curved, connecting these walls, which due to the housing function as a radial wall and the opposite walls , are referred to as axial walls, with one or both axial walls having an opening in the area of the spiral center and a further opening, formed from the axial walls and the radial wall, being arranged in the spiral end area, similar to the opening in a worm housing and further the spiral end area of the housing in the Is usually designed as a straight exit or entry area, depending on the direction of flow provided by the task of the housing, as is the case with turbomachines, for example radial compressors, radial fans, disintegrators and similar turbomachines or with centrifugal separators. for example cyclones, swirl chamber separators and similar separators, characterized in that the radial wall (1) with its entire radial wall contour (2) consists of an initially stretched band (3) of flexible and / or resilient material, and the band ( 3) is brought into the shape of the radial wall contour (2) only with preferably elastic deformation around its thinnest cross-section (4), in that the band (3) on and / or with correspondingly arranged elements with its edge zones (6, 7 ) but preferably with its entire width (7), supports and / or engages, the arrangement of these elements corresponding to the desired spiral or spiral-like course of the radial wall contour (2) or running parallel to it, and these elements on or on the opposite sides (5) of the axial walls (8, 9) , are arranged as their own body elements and / or as foreign elements, such body elements being formed by appropriate shaping of the axial walls (8, 9), such as, for example, plastic or machining or punching or casting technology or by combinations thereof or by foreign elements , which are arranged on the axial walls (8, 9) and / or connecting them, or are formed by the body's own elements which are produced by appropriate shaping of the edge zones (5, 6) of the radial wall (1) formed from the band (3) were and / or by at least in the area of the edge zones (5, 6) arranged foreign elements that correspond in or on hend trained body and / or foreign elements of the axial walls (8, 9) intervene or are supported on it, and all or some of the body's own elements and / or foreign elements by means of the axial walls (8, 9) the radial wall made of band (3) arranged in between (1), hold clamped and further the foreign elements of the axial walls (8, 9) and / or the radial wall (1), preferably detachably arranged, and further the axial walls (8, 9) in a further embodiment of the invention, preferably at least in terms of necessary bores (10, 11,) and openings (23) are congruent and that the thickness of the band is preferably selected in its maximum so that, on the one hand, depending on the smallest radius (12) of the radial wall contour (2) to be achieved by elastic deformation and on the other hand, depending on the width (7) of the band (3), the elastic bending of the band (3) to produce the radial wall (1) is just still possible or the smallest radius (12) is achieved by permanent deformation of the radial wall (1) produced from the band (3).

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