EP0263914A2 - Chambre à volute pour les turbomachines ou les dépoussiéreurs par centrifugation et méthode de fabrication d'une chambre à volute - Google Patents

Chambre à volute pour les turbomachines ou les dépoussiéreurs par centrifugation et méthode de fabrication d'une chambre à volute Download PDF

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Publication number
EP0263914A2
EP0263914A2 EP87106386A EP87106386A EP0263914A2 EP 0263914 A2 EP0263914 A2 EP 0263914A2 EP 87106386 A EP87106386 A EP 87106386A EP 87106386 A EP87106386 A EP 87106386A EP 0263914 A2 EP0263914 A2 EP 0263914A2
Authority
EP
European Patent Office
Prior art keywords
radial wall
band
axial walls
elements
walls
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP87106386A
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German (de)
English (en)
Other versions
EP0263914A3 (fr
Inventor
Bert Steffens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0263914A2 publication Critical patent/EP0263914A2/fr
Publication of EP0263914A3 publication Critical patent/EP0263914A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/02—Construction of inlets by which the vortex flow is generated, e.g. tangential admission, the fluid flow being forced to follow a downward path by spirally wound bulkheads, or with slightly downwardly-directed tangential admission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/08—Vortex chamber constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans

Definitions

  • 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.
  • turbo machines for example radial compressors, 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.
  • 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.
  • housings such as housings for radial fans
  • 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.
  • 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.
  • the effort of welding with the necessary aids, such as welding gauges is not small.
  • 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.
  • 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.
  • 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 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,
  • 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.
  • FIG. 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
  • 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.
  • FIGS. 1 and 2 show the exemplary radial fan housing 71 according to FIGS. 1 and 2 with the suction-side axial wall 9 removed.
  • 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.
  • 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
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • FIG. 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the band 3 was preformed plastically at the point at which it is later supported on the tubular shaped part 44.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • FIG. 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.
  • FIG. 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.
  • 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.
  • 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.
  • these 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.
  • the clamping bolts 37 are completely eliminated, as are the bores 10 shown in FIG. 20.
  • FIG. 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.
  • 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.
  • FIG. 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.
  • a connection of the axial walls 8, 9 is provided by means of clamping bolts 37, not shown.
  • 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.
  • 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.
  • FIG. 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.
  • axial wall 8 with part of the radial wall 1.
  • bolts 26 are arranged, which in turn are inserted into bores 10.
  • 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.
  • 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.
  • pins 31 are fastened to the axial walls 8, 9, against which the radial wall 1 formed from a band 3 is supported.
  • 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 .
  • 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.
  • 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.
  • 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.
  • FIG. 32 shows a side view of the housing in a cutout with a partially cut axial wall 8, similar to FIG. 29.
  • 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.
  • FIG 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.
  • 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.
  • clamping bolts 37 could be replaced by correspondingly long commercially available screws.
  • 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.
  • 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.
  • a design of the smooth part 39 is also conceivable, in which it has a groove for receiving shaft locking rings known per se.
  • clamping bolts 37 is expedient and economical in the light construction of housings according to the invention.
  • FIG. 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.
  • 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.
  • 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.
  • Shaped parts 42 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • FIGS. 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Centrifugal Separators (AREA)
EP87106386A 1986-09-15 1987-05-02 Chambre à volute pour les turbomachines ou les dépoussiéreurs par centrifugation et méthode de fabrication d'une chambre à volute Withdrawn EP0263914A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3631356 1986-09-15
DE19863631356 DE3631356A1 (de) 1986-09-15 1986-09-15 Verfahren zur herstellung von gehaeusen

Publications (2)

Publication Number Publication Date
EP0263914A2 true EP0263914A2 (fr) 1988-04-20
EP0263914A3 EP0263914A3 (fr) 1989-07-05

Family

ID=6309616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87106386A Withdrawn EP0263914A3 (fr) 1986-09-15 1987-05-02 Chambre à volute pour les turbomachines ou les dépoussiéreurs par centrifugation et méthode de fabrication d'une chambre à volute

Country Status (2)

Country Link
EP (1) EP0263914A3 (fr)
DE (1) DE3631356A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3165776A1 (fr) * 2015-11-03 2017-05-10 Siemens Aktiengesellschaft Turbocompresseur supporté uniquement par ses brides de raccords d'admission et de refoulement
WO2018107043A1 (fr) * 2016-12-09 2018-06-14 Cummins Filtration Ip, Inc. Séparateur centrifuge ayant une densité de tassement de surface volumétrique et une performance de séparation améliorées

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012109807A1 (de) * 2012-10-15 2014-04-17 Benteler Automobiltechnik Gmbh Abgasturbolader
DE102014012123A1 (de) * 2014-08-14 2016-02-18 Man Diesel & Turbo Se Abgasturbolader
DE102015014030B4 (de) * 2015-10-31 2026-01-29 Everllence Se Abgasturbolader und Stützstruktur für einen Abgasturbolader

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Publication number Priority date Publication date Assignee Title
NL46294C (fr) * 1900-01-01
US1584944A (en) * 1921-05-28 1926-05-18 Arthur J Johnson Blower construction
US1946162A (en) * 1932-06-06 1934-02-06 Bryce M Hess Blower
GB462153A (en) * 1935-08-12 1937-03-03 Enke J And Nielsen N &Co Ltd Comp Improvements in and relating to grinding or crushing mills
FR1248547A (fr) * 1959-11-06 1960-12-16 Perfectionnements aux volutes de ventilateurs centrifuges
US3187792A (en) * 1963-07-22 1965-06-08 Eugene D Thompson Feed mill having foreign material trap chamber
US3485443A (en) * 1968-12-12 1969-12-23 Trane Co Fan scroll
US3561885A (en) * 1969-08-11 1971-02-09 Pyronics Inc Blower housing
FR2193182A1 (fr) * 1972-07-24 1974-02-15 Grandvuinet Ets
DE2556614A1 (de) * 1975-12-16 1977-06-23 Mulfingen Elektrobau Ebm Spiralgehaeuse fuer luefter
JPS5672299A (en) * 1979-11-15 1981-06-16 Advance:Kk Manufacturing of siroco fan gase

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3165776A1 (fr) * 2015-11-03 2017-05-10 Siemens Aktiengesellschaft Turbocompresseur supporté uniquement par ses brides de raccords d'admission et de refoulement
WO2018107043A1 (fr) * 2016-12-09 2018-06-14 Cummins Filtration Ip, Inc. Séparateur centrifuge ayant une densité de tassement de surface volumétrique et une performance de séparation améliorées
US11173440B2 (en) 2016-12-09 2021-11-16 Cummins Filtration Ip, Inc. Centrifugal separator with improved volumetric surface area packing density and separation performance

Also Published As

Publication number Publication date
DE3631356A1 (de) 1988-03-24
EP0263914A3 (fr) 1989-07-05

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