Classifications

• • 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
  • F04D29/44—Fluid-guiding means, e.g. diffusers
  • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
  • F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps
• • 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
  • F04D29/44—Fluid-guiding means, e.g. diffusers
  • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
  • F01D17/00—Regulating or controlling by varying flow
  • F01D17/10—Final actuators
  • F01D17/12—Final actuators arranged in stator parts
  • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
  • F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
• • 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
  • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
  • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
  • F05D2250/00—Geometry
  • F05D2250/50—Inlet or outlet
  • F05D2250/51—Inlet

Definitions

• the invention relates to the field of turbomachines subjected to exhaust gases of internal combustion engines.
• It relates to a guide device for generating a Vordralls in the intake of a compressor and an exhaust gas turbocharger with such a Vordrall guide.
• Exhaust gas turbochargers are used to increase the performance of internal combustion engines. In modern internal combustion engines, the adaptation of the exhaust gas turbocharger to variable operating conditions will become more difficult.
• a widely used option is the so-called variable turbine and / or compressor geometry.
• the stator vanes are aligned more or less steeply with the flow upstream of the turbine wheel in accordance with turbine power requirements.
• the vanes in the diffuser downstream of the compressor wheel are aligned more or less steeply to the flow.
• Vordrall guide devices which produce a certain Vordrall Ansauge Scheme the compressor in the intake air, or possibly the aspirated air-fuel mixture, depending on the operating point with more or less pronounced - or in opposite directions to the direction of rotation of the compressor wheel.
• Adjusting lever be made separable for assembly reasons. This can be additional Lead to cost and tolerance errors and significantly reduce reliability in operation.
• the object of the present invention is to provide a reliably operating over a long period of operation, easy to install predrirl guide with adjustable vanes.
• the inventive predrirl guide device further comprises a coaxial with the shaft axis of the compressor arranged, pivotable about this axis collar, and adjusting lever for transmitting torque from the adjusting ring on the blade shank of each vane.
• vane shank and adjusting lever of each vane are formed in one piece.
• the one-piece design of the vane reduces the number of joints, which has a positive effect on the material wear. In addition, the number of components to be assembled is reduced. This simplifies the assembly and any service work on the guide.
• the housing of the pre-whirl guide device according to the invention in which the guide vanes are rotatably mounted, comprises at least two parts joined together in the region of the bearings of the guide vane.
• this makes it possible to assemble the guide vane, which is made in one piece with an integrated adjusting lever.
• this makes it possible to support and secure the blade with the bearing point in the axial direction with respect to the axis of rotation of each moving blade.
• the bearings can be protected with inserted bearing sleeves.
• This axial bearing of the guide vanes takes place according to the invention via projections on the blade shafts and on the housing surrounding the blade shafts. These projections extend in the radial direction with respect to the axis of rotation of the guide vane.
• grooves can also be embedded in the housing and / or in the blade shafts, which cooperate with corresponding projections for the axial securing of the guide blade. If grooves are embedded both in the housing and the blade shafts, the axial bearing can be made with special bearing rings, which are arranged in the grooves. The grooves and protrusions may also extend only partially around the respective blade shank. Further advantages emerge from the dependent claims.
• FIG. 1 shows a section through a first embodiment of a predrirl guiding device designed according to the invention, with a central body held by means of a retaining rib
• FIG. 2 shows an isometric detailed view of the predrirl guiding device according to FIG. 1,
• FIG. 3 shows a section through a second embodiment of an inventively designed pre-whirling guide device
• FIG. 4 is an isometric view in detail of the pre-whirl baffle of FIG. 3, FIG.
• FIG. 5 shows an enlarged detail of the section in FIG. 1 in the region of the guide blade shaft with a detailed representation of a first
• FIG. 6 shows an enlarged detail of the section in FIG. 1 in the region of the guide blade shaft with a detailed illustration of a second variant of the axial bearing of the guide vanes
• FIG. 7 shows an enlarged section of the section in FIG. 1 in the region of the adjusting lever Details for the storage of the adjusting ring
• FIG. 8 shows a section through an inventively designed Vordrall guide device with a held by the vanes central body
• 9 shows a section with an alternative variant of the second embodiment of the invention according to Vordrali guide device of FIG .. 3
• Fig. 1 shows a section through a guide in the intake of a compressor.
• Such compressors are, as described above, used in exhaust gas turbochargers to increase the performance of internal combustion engines.
• the arrows in the figure indicate the flow path of the medium to be compressed, which is usually air or optionally an air-fuel mixture for the combustion process in the internal combustion engine.
• guide devices can be used in any type of compressor, for example, in electric motors driven I nd ustrieverd ichtern.
• the guide device comprises a plurality of guide vanes 10 arranged aligned with respect to the compressor axis in the radial direction.
• each of the guide vanes comprises a blade shank 12 with which the blade profile is rotatably mounted in a housing.
• an adjusting lever 13 Via an adjusting lever 13, the blade profile can be rotated about the axis of the blade shank.
• an adjusting ring 30 is provided, which is arranged concentrically to the axis of the compressor. By turning the adjusting ring 30, all blades are simultaneously adjusted about the respective axes of their shovel shafts.
• the torque is transmitted from the adjusting ring 30 to the blade shank 12 via a arranged at the free end of the adjusting lever 13 ball head 14.
• the ball head 14 is guided in a groove 31 of the adjusting ring with two parallel walls , In the groove, the ball head has the translatory and rotational
• the ball socket is at least partially made of a translationally displaceable sliding shoe 20th educated. If the adjusting ring 30 is rotated for adjusting the guide vanes, then the sliding shoe 20 is displaced by the ball head 14 in the groove 31 in the plane of the groove walls. If the adjusting ring is turned away, the position of the adjusting lever changes relative to the adjusting ring.
• the translational displacement of the center of rotation of the ball head is made possible by sliding the sliding wall along the groove walls, while for the rotation of the ball head in the ball socket formed by the sliding shoe can rotate arbitrarily in any direction.
• the shoe may also be formed in two parts by a ball socket half is arranged with a flat, sliding back on each side of the groove in the adjusting ring.
• the pin engages in a bore in the adjusting ring 30 also in a bore 32nd mounted, cylindrical sliding element 21 a.
• the sliding cylinder 21 can be rotated in the bore 32 about its own axis and move along its own axis.
• the bore in the sliding cylinder, which is provided for receiving the pin 15, is perpendicular to the axis of the sliding cylinder.
• the pin can be rotated in this hole around its own axis and move along its own axis.
• the pin 15 as shown in FIG. 9, fixed in the sliding cylinder 21 and be slidably mounted in a corresponding bore in the free end of the adjusting lever 13 of the guide vane.
• the blade profile 11, blade shank 12 and the adjusting lever 13, together with the attachment required for torque transmission, that is to say the ball head 14 or the pin 15, are integrally formed.
• the entire guide blade 10 with its functional components cast or milled from one piece or force of several parts prior to installation in the housing force, shape or materially joined together in one piece.
• the blade profile, the blade shank and the adjusting lever is poured as a piece and then driven the ball head or pin into a designated opening in the adjusting lever with interference fit or loosely inserted and welded or -gegossen.
• the housing according to the invention is divided in the region of the bearing points of the guide vanes.
• at least two housing parts 41 and 42 which can be joined together in the axial direction with respect to the compressor axis are provided.
• the two housing parts together form the recess 45.
• the two housing parts 41 and 42 are held together, for example, with connecting elements in holes 46 provided for this purpose or via other subsequently installed housing parts. Thanks to the inventive division of the housing in the region of the guide device, the storage of the guide vanes and the adjusting ring can be greatly simplified. As shown in Fig.
• housing protrusions 49 may be provided on both sides or on a housing part in each case at the axial ends of the bearing point of the blade shank.
• an at least partially circumferential groove in the recess between the two housing parts 41 and 42 a the shovel shaft also at least partially circumferential projection 17 record.
• the groove may also be embedded in the blade shank and the housing parts may be provided with a corresponding projection.
• a groove is embedded in a housing part while the other housing part has a projection and is provided according to the blade shank with a projection and a groove.
• grooves are recessed both in the blade shank and in the surrounding housing.
• An arranged in the grooves bearing ring provides in this Variant for the axial bearing of the guide vanes. All these variants of the internal thrust bearings allow a reduction in the axial clearance of the vanes.
• the bearing components, so the housing parts and / or the blade shank can be hardened or provided with a coating of an abrasion-resistant material.
• the axial and radial mounting of the adjusting ring also realize in a simple manner.
• the adjusting ring 30 is arranged together with the guide vanes between the housing parts or on one of the two housing parts.
• the final alignment of the Versteliringes then takes place automatically in the axial direction.
• the adjusting ring 30 is supported in the axial direction from both sides by a corresponding bearing element 47 'and 47 " .
• the first axial bearing element 47 ' is part of the first housing part 41, while the second axial bearing element 47" Part of the second housing part 42 is.
• the radial bearing of the adjusting ring can be achieved in a simple manner by supporting the adjusting ring on a circumferential projection 48. As in the bearing of the vane, and the bearing parts of the adjusting ring can be hardened or coated.
• a central housing body is optionally arranged according to an embodiment of the inventive guide device.
• This central body is concentric with the axis of the compressor.
• the central body is part of the housing which forms the flow channel of the medium to be compressed in the region of the guide device.
• the central body 44 may be positioned and retained via one or more radially extending housing ribs 43.
• the central body can also be positioned and held on the vane tips.
• radially guided bores 441 are introduced into the central body 44, in which shanks 16 designed especially for this purpose engage the blade tips.
• This device with the rays around the Central body arranged vanes also allows a simplified assembly of the vanes, which can already be arranged around the central body 44 prior to introduction into one of the two housing parts 41 or 42. Subsequently, the unit of central body and all vanes can be performed in a single step to the designated space.
• corresponding bores may also be provided in the embodiment with a central body positioned and held by means of a retaining rib.
• they also serve a simplified assembly by the guide vanes are inserted with the special blade tip shafts in the holes in the central body before they are then placed in the radially extending recesses in the one housing part.
• the described blade tip shanks can be fixedly connected to the tips of the guide vanes, or rotatably mounted in holes provided in the blade tips.
• the shafts may also be fixedly connected to the central body, so that during mounting the guide vanes are plugged with their holes at the blade tips on the shafts.
• an embodiment of the inventive guide device without a central body with up to the middle current vanes is possible.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)
• Supercharger (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36926401

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (17)

Citations (4)

Family Cites Families (7)

• 2006
  • 2006-03-31 EP EP06405137A patent/EP1840386A1/de not_active Withdrawn
• 2007
  • 2007-02-22 WO PCT/CH2007/000090 patent/WO2007112601A1/de active Application Filing
  • 2007-02-22 CN CNA2007800117121A patent/CN101415951A/zh active Pending
  • 2007-02-22 EP EP07701890A patent/EP2002127B1/de not_active Expired - Fee Related
  • 2007-02-22 JP JP2009501808A patent/JP2009531581A/ja not_active Withdrawn
  • 2007-02-22 KR KR1020087023917A patent/KR20080106955A/ko not_active Application Discontinuation
  • 2007-02-22 DE DE502007002109T patent/DE502007002109D1/de active Active
  • 2007-03-28 US US11/727,770 patent/US20070231125A1/en not_active Abandoned

Patent Citations (4)

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