Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
  • F04F13/00—Pressure exchangers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D53/00—Making other particular articles
  • B21D53/26—Making other particular articles wheels or the like
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D53/00—Making other particular articles
  • B21D53/26—Making other particular articles wheels or the like
  • B21D53/267—Making other particular articles wheels or the like blower wheels, i.e. wheels provided with fan elements
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49229—Prime mover or fluid pump making
  • Y10T29/49236—Fluid pump or compressor making
  • Y10T29/49245—Vane type or other rotary, e.g., fan

Definitions

• the present invention relates to a cellular wheel made of metal, with a cylindrical outer sleeve lying symmetrically to a rotation axis and concentric with respect to
• Cell wall parts is divided into a plurality of rotationally symmetrical cells, wherein the cell edges are on cutting lines of concentric with the axis of rotation arranged cylindrical outer surfaces with rotationally symmetrical arranged axial planes.
• the cell edges are on cutting lines of concentric with the axis of rotation arranged cylindrical outer surfaces with rotationally symmetrical arranged axial planes.
• the invention is also suitable for the production of the cellular wheel
• the rotor In a pressure wave supercharger, the rotor is designed as a cellular wheel and is enclosed by an air and exhaust housing with a common jacket.
• the development of modern pressure wave chargers for charging small engines leads to cell wheels with a diameter of the order of 100 mm or less.
• To achieve a maximum cell volume and also for weight reduction cell wall thicknesses of 0.2 mm or less are desired.
• the production of dimensionally stable and high-precision cell wheels with a low cell wall thickness is today hardly possible or associated with considerable additional costs.
• the cellular wheel has an outer sleeve, an inner sleeve concentric with the outer sleeve and an intermediate sleeve arranged concentrically between the outer sleeve and the inner sleeve. Between the outer sleeve and intermediate sleeve and between intermediate sleeve and inner sleeve radially aligned with the axis of rotation slats are arranged. The individual cells are bounded by two adjacent lamellae and adjacent pods.
• the invention is based on the object to provide a star feeder of the type mentioned, which has a higher rigidity compared to cell wheels according to the prior art with comparable cells wall thickness.
• the cell wheel should be able to be produced easily and inexpensively with the required precision.
• Another object of the invention is to provide a dimensionally stable, lightweight cellular wheel for use in a pressure wave supercharger for supercharging internal combustion engines, in particular for supercharging small gasoline engines with a displacement of the order of 1 liter or less.
• a still further object of the invention is to provide a method for inexpensively producing dimensionally stable and high precision cellular wheels having a cell wall thickness of 0.4 mm or less.
• outer sleeve and inner sleeve define a network formed from a network of mesh-like coherent cell wall network formed cell structure in which each pair of cell wall part delimiting cell edges lie simultaneously on adjacent cylinder jacket surfaces and adjacent axial planes wherein each cell edge on a cylindrical surface with each of the cell edges lying on two adjacent axial planes of an adjacent cylinder jacket surface bounds in each case two cell wall parts.
• the cellular wheel has a significantly higher rigidity than the known cell wheels.
• the absence of intermediate sleeves in addition to a significant weight reduction leads to a greatly increased passage cross-section.
• the cell structure preferably has three or four cylinder jacket surfaces, but also cell wheels with more than four cylinder jacket surfaces are conceivable.
• the cell structure is produced in accordance with the industrial production of honeycomb structures by stretching lamella packages from locally connected at different locations lamellae.
• the joining of the two terminal lamellae of the stretched and bent plate pack along corresponding cell edges and the connection of the outer sleeve and the inner sleeve with the lamellar edges is preferably by welding the parts performed by means of a laser or electron beam.
• connection of the lamellae pairs to individual cells and the connection of the lamellae or the cells with one another to the annular cell structure and with the inner sleeve is preferably carried out by welding the parts by means of a laser or electron beam.
• the cellular wheel produced by the method according to the invention is preferably used in a pressure wave supercharger for supercharging internal combustion engines, in particular gasoline engines with a displacement of 1 liter or less.
• Fig. 1 is a side view of a cellular wheel for a pressure wave supercharger
• Fig. 2 is an oblique view of the end face of the cellular wheel of Fig. 1;
• FIG. 3 shows a section perpendicular to the axis of rotation of the cellular wheel of Figure 1 along the line I-I ..;
• Fig. 4 is a side view of a variant of the cellular wheel of Figure 1;
• Fig. 5 is an oblique view of the end face of the cellular wheel of Fig. 4;
• FIG. 6 shows a section perpendicular to the axis of rotation of the cellular wheel of Figure 4 along the line H-II ..;
• FIG. 7 is a plan view of a welded plate pack for the production of
• FIG. 10 shows a welding variant of the disk pack of FIG. 7;
• FIG. 11 is an oblique view of a made of the disk pack of Fig. 7
• FIG. 12 shows the disk pack of FIG. 13 with the dimensions of the disk pack of FIG. 8 after stretching and bending to the cell structure, welded to the outer and inner sleeves;
• FIG. 12 shows the disk pack of FIG. 13 with the dimensions of the disk pack of FIG. 8 after stretching and bending to the cell structure, welded to the outer and inner sleeves;
• FIG. 13 is a plan view of a welded plate pack for the production of
• FIG. 14 shows a cross section through the disk pack of FIG. 13 along the line FV-IV;
• Fig. 15 shows a detail of the disk pack of Fig. 13 after stretching
• FIG. 16 is an oblique view of a made of the plate pack of Fig. 13
• Fig. 17 is an oblique view of an inner sleeve of a cellular wheel according to Figure 3 with a part set and grooved slats.
• FIG. 18 shows a section through a partial region of the arrangement of FIG. 17 at right angles to the cell wheel axis in an enlarged representation
• FIG. 19 shows a longitudinal section through the arrangement of FIG. 17 with the tool inserted and the outer sleeve pushed on;
• Fig. 20 is a cross-section through part of the arrangement of Fig. 19 after
• Fig. 21 is an oblique view of the arrangement of Fig. 19;
• Fig. 22 is a section through the arrangement of Fig. 21 at right angles to
• Fig. 23 is an enlarged detail of the area X of Fig. 22;
• FIG. 24 shows an oblique view of an inner sleeve of a cellular wheel according to FIG. 6 with a part of set and joined blades;
• FIG. 25 shows a section through a partial region of the arrangement of FIG. 24 at right angles to the cell wheel axis in an enlarged representation
• Fig. 26 is a longitudinal section through the arrangement of Fig. 24 with inserted
• FIG. 27 shows a cross section through part of the arrangement of FIG. 26 according to FIG.
• Fig. 28 is an oblique view of the arrangement of Fig. 26;
• Fig. 29 is a section through the arrangement of Fig. 28 at right angles to
• FIG. 30 is an enlarged detail of the area Y of FIG. 29.
• FIG. 30 is an enlarged detail of the area Y of FIG. 29.
• a cellular wheel 10 consists of a cylindrical outer sleeve 12 lying symmetrically with respect to a rotational axis y of the cellular wheel 10 and a cylindrical inner sleeve 14 lying concentrically with the outer sleeve 12.
• Outer sleeve 12 and inner sleeve 14 delimit a cell structure 17 of a mesh formed in the cross-section mesh-like cell wall parts 19 network.
• the annular space between the outer sleeve 12 and the inner sleeve 14 is of parallel to the rotation axis y aligned cell edges 20 limited cell wall parts 19 in a variety of
• the cell edges 20 are located on cutting lines of cylinder jacket surfaces 18a, 18b, 18b, 18b2, 18c arranged concentrically with respect to the rotation axis y with axially symmetrical axial planes 21.
• the cell walls each have a cell wall part 19 in pairs
• Each cell edge 20 on a cylindrical surface 18a, 18b, 18b, 18b2, 18c delimited with each of the two adjacent axial planes 21 of an adjacent cylindrical surface 18a, 18b, 18b, 18b2, 18c lying cell edges 20 each have two other cell wall portions 19.
• the annular cell structure 17 is bounded by the inner sleeve 14 and the outer sleeve 12. In this way, from the interstices of adjacent cells with deltoid cross-section and the outer and inner sleeves 12, 14 further cells 22 ', 22 "with triangular cross-section.
• the cell edges of the annular cell structure are at intersections of 72 rotationally symmetrical axial planes 21 with 3 cylinder jacket surfaces 18a, 18b, 18c, wherein in the finished cellular 10, the outer and inner cylindrical surface 18a, 18c with the inner wall the outer sleeve 12 and the inner sleeve 14 coincide.
• 2 ⁇ 36 cells 22a, 22b with a deltoid cross-section and 2 ⁇ 36 cells 22 ', 22 "with a triangular cross-section thus result
• the cell wheel 10 shown by way of example in FIGS. 1 to 3 and 4 to 6 with a diameter D and a length L of z. B. per 100 mm has a total of 108 or 144th
• the outer sleeve 12, the inner sleeve 14 and the cell wall parts 19 have a uniform wall thickness of z. B. 0.4 mm and consist of a chemicalwa ⁇ nfesten metallic material, eg. Inconel 2.4856.
• Rotation axis y an equal length L corresponding to the length of the cellular wheel 10 and extend between two perpendicular to the axis of rotation y end faces of the
• Profiles 24 a labyrinth seal arranged.
• the counter profiles required for the formation of the labyrinth seal to the profiles 24 are located on the inner wall of a
• rectangular slats 16 of a length 1 and a width b are consecutively congruently superimposed one after the other, wherein before each laying of a further slat 16 the two uppermost slats 16 at a predetermined position by means of a parallel to the longitudinal direction of the slats 16 guided laser beam are welded together.
• the lamellae 16 are strip-shaped, flat sheet-metal parts and are usually cut to a given length by a sheet metal strip in the form of rolls.
• the length l of the lamellae corresponds to the length L of the cellular wheel 10.
• the width b of the lamellae 16 or the lamella packet 26 is greater than the width or thickness B of the annular space or the annular cell structure 17 between the outer sleeve 2 and inner sleeve 14 and takes into account the subsequent distances and bending of the disk set 26 to the cell structure 17 entering decrease the width b of the disk set 26th
• a total of 72 lamellae 16 are alternately welded together in the region of a first longitudinal edge 16k and between the longitudinal center and the second longitudinal edge 16k and in the region of the second longitudinal edge 16k and between the longitudinal center and the first longitudinal edge 16k over the entire length 1 , so that finally a package 26 of 72 welded together slats 16 is formed.
• the package 26 of the welded together slats 16 in a Direction z is stretched perpendicular to the plane of the fins 16 and bent to the annular cell structure 17 until the first and the last lamella 16 of the package 26 touch. In this position, the two terminal lamellae 16 of the package are welded together along respective edges.
• the outer sleeve 12 and the inner sleeve 14 in the form rohrf ⁇ rmiger sleeves from one end up or inserted.
• the cell walls of the ring-shaped cell structure 17 are fixed in position in the predetermined angular position via tools 34 introduced at the front.
• FIGS. 9 and 12 show that cell structures with a different number of cells according to FIGS. 3 and 6 can be installed in an annular space between the outer and inner sleeves with predetermined dimensions.
• all the weld seams can be set with a laser beam guided perpendicular to the plane of the lamellae 16 (FIGS. 8 and 13).
• the longitudinal edges 16k are set in pairs with a laser beam guided laterally parallel to the plane of the lamellae 16.
• FIGS. 17 and 18 and FIGS. 24 and 25 show, as a variant of the above-described production of a cellular wheel 10 according to FIG. 3 and FIG. 6, the loading of a prefabricated inner sleeve 14 or flange sleeve 15 with individual or paired cells 22 and 22a , 22b welded, preformed to their final, predetermined by the annular cell structure 17 shape lamella 16.
• the main difference from the manufacturing method described above is that a previously prepared inner sleeve 14 is fitted.
• the joining of the individual lamellae 16 or cells 22 or 22a, 22b with each other takes place from the outside by means of a perpendicular to
• the welding of the individual lamellae 16 or cells 22 or 22a, 22b with the inner sleeve 14 can from the outside by means of a guided at an angle to the corresponding axial plane 21 along the joint edge laser beam 30 'to form a fillet weld or from within the inner sleeve 14 by means of a laser beam 30 '' guided along the bumping edge perpendicular to the axis of rotation y to form a blind seam, but the welding of the last cell to the inner sleeve takes place from within the inner sleeve 14.
• the inner sleeve 14 can be seamless Sleeve or a bent to a rohrf ⁇ rmigen sleeve and welded along a butt edge to form a longitudinal weld metal strip.
• the inner sleeve 14 equipped with lamellae 16, welded in pairs to cells 22 or 22a, 22b, is directly connected to a drive shaft 13, i. It can be dispensed with here on a flange sleeve or the inner sleeve 14 is slid onto a flange sleeve 15 prior to assembly with slats.
• connection of the inner sleeve 14 with the flange sleeve 15 can be done for example by welding the end edges of inner sleeve 14 and flange sleeve 15 by means of laser beams 30 (not shown in the drawing).

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Laser Beam Processing (AREA)
• Supercharger (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)
• Turbine Rotor Nozzle Sealing (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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Citations (6)

Family Cites Families (18)

• 2009
  • 2009-05-19 EP EP09006742A patent/EP2253853A1/de not_active Withdrawn
• 2010
  • 2010-04-27 US US13/318,656 patent/US20120057994A1/en not_active Abandoned
  • 2010-04-27 WO PCT/CH2010/000108 patent/WO2010133002A1/de active Application Filing
  • 2010-04-27 JP JP2012511111A patent/JP5635081B2/ja active Active
  • 2010-04-27 ES ES10716258T patent/ES2435006T3/es active Active
  • 2010-04-27 EP EP10716258.8A patent/EP2433015B1/de active Active
  • 2010-04-27 PT PT107162588T patent/PT2433015E/pt unknown

Patent Citations (6)

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