WO2016102128A1 - Compresseur radial, turbocompresseur et procédé correspondant pour faire fonctionner un compresseur radial - Google Patents

Compresseur radial, turbocompresseur et procédé correspondant pour faire fonctionner un compresseur radial Download PDF

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Publication number
WO2016102128A1
WO2016102128A1 PCT/EP2015/077119 EP2015077119W WO2016102128A1 WO 2016102128 A1 WO2016102128 A1 WO 2016102128A1 EP 2015077119 W EP2015077119 W EP 2015077119W WO 2016102128 A1 WO2016102128 A1 WO 2016102128A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressor
gap
housing
radial
housing insert
Prior art date
Application number
PCT/EP2015/077119
Other languages
German (de)
English (en)
Inventor
Jochen Doehring
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2016102128A1 publication Critical patent/WO2016102128A1/fr

Links

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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/024—Units comprising pumps and their driving means the driving means being assisted by a power recovery turbine
    • 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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • F01D11/14—Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing
    • F01D11/20—Actively adjusting tip-clearance
    • F01D11/22—Actively adjusting tip-clearance by mechanically actuating the stator or rotor components, e.g. moving shroud sections relative to the rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0246—Surge control by varying geometry within the pumps, e.g. by adjusting 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F04D29/444—Bladed diffusers
    • 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
    • F04D29/622—Adjusting the clearances between rotary and stationary parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the 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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/04—Units comprising pumps and their driving means the pump being fluid-driven
    • 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
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers

Definitions

  • the present invention relates to a radial compressor for a
  • Exhaust gas turbocharger in particular an internal combustion engine, and a
  • Exhaust gas turbocharger with such a radial compressor The invention further relates to a method for operating such a radial compressor.
  • Exhaust gas turbochargers are used, for example, in internal combustion engines
  • Such an exhaust gas turbocharger can be equipped with a radial compressor, which has a compressor wheel, by means of which the respective gas can be conveyed and compressed.
  • the compressor can have an axial input side and a radial output side, and be arranged in a compressor chamber.
  • An inlet channel leads to the input side of the compressor wheel and in the case of an internal combustion engine to a low-pressure region of a fresh gas system equipped with the exhaust-gas turbocharger.
  • Outlet channel leads away from the output side of the compressor wheel to
  • the compressor wheel is surrounded by the compressor housing within the compressor chamber.
  • the compressor housing has a cover disk on an inner surface which is radial to the compressor wheel and a rear disk on an inner surface which is axial to the compressor wheel.
  • the gap between the compressor wheel and the compressor housing is measured with two gap widths, namely the gap width between the compressor wheel and the cover plate of the compressor housing and between the compressor wheel and the rear wheel of the
  • DE 10 2012 217 381 A1 shows a radial compressor in which the gap width of a gap between the compressor wheel and the cover disk is adjustable.
  • the invention provides a radial compressor for an exhaust gas turbocharger according to claim 1, an exhaust gas turbocharger with such a radial compressor according to claim 7 and a corresponding operating method for a radial compressor according to claim 8.
  • the idea underlying the present invention is to provide an adjustment for the clearance between the compressor wheel and the compressor housing.
  • the radial compressor on an axially and / or radially displaceable housing insert, which in a
  • Compressor space is arranged in a region between the compressor housing and a cover plate.
  • the cover disk and the rear disk are part of a composite, which additionally has at least one guide vane.
  • the cover disk and the rear disk are connected by the guide vane.
  • Gap between the rear disc and the compressor results.
  • the present invention also allows compensation of manufacturing tolerances in the manufacture of centrifugal compressors, due to which the gap between the
  • Compressor housing and the compressor can vary.
  • Radial compressor additionally a control device which is adapted to determine an axial displacement of the compressor wheel and the position of the
  • the width of the column can be optimally adapted to an operating condition of the centrifugal compressor, such as the speed of the compressor wheel.
  • the cover disk and the rear disk are non-detachably connected by the guide vane. This is a particularly cost-effective production possibility of a composite, which has a cover plate, a rear plate and at least one vane given.
  • the composite may be integrally formed or made of a cast.
  • the cover plate covers a sealing gap between the housing and the housing insert. This reduces flow losses and also prevents the escape of the fluid to be compressed in the sealing gap.
  • a spring and a piston are arranged to control the housing insert. This provides a particularly cost-effective way to control the housing use. In addition, such adjustment is also manually adjustable.
  • the invention also relates to an exhaust gas turbocharger with a centrifugal compressor having one or more of the aforementioned features.
  • the invention further relates to an operating method for a previously described radial compressor. According to this method, in a first step, a centrifugal compressor having one or more of the aforementioned features is provided. In a further step, a width of a first gap between a compressor wheel and a cover disk is determined. In a further step, a width of a second gap determined between the compressor wheel and a rear disc. Due to the two measurements mentioned above, in a next step, a position of a housing insert and a composite is controlled. Thus, the control of the position of the housing insert and / or the
  • Axial displacement of the compressor wheel can be any measurement errors of the
  • Gap widths of the first and second gap can be compensated and consequently the two gaps between the compressor wheel and the cover and rear disc can be controlled even more precisely.
  • the steps of determining the width of the first and second gaps and controlling the position of the housing insert and the composite based on the determined width of the first and second gap before a start-up of a compressor are performed. Further, the steps of determining an axial displacement of the compressor wheel and controlling the position of the housing insert and / or the assembly due to the determined axial displacement are performed continuously during the compressor operation.
  • the position of the housing insert is made once, as part of a coarse adjustment. This coarse adjustment already covers a large part of the setting requirement of the position of the housing insert.
  • the widths of the adjusted gaps may continue to vary slightly by axial displacement of the compressor wheel.
  • Fig. 1 is a schematic cross-sectional view of a
  • Fig. 2 is another schematic cross-sectional view of
  • Embodiment of the radial compressor according to the invention Embodiment of the radial compressor according to the invention.
  • FIG. 1 shows a schematic cross-sectional view of an embodiment of a radial compressor according to the invention.
  • the radial compressor 100 comprises a compressor housing 101, which has an axial inlet channel 103 and a radial outlet channel 105.
  • the compressor housing 101 at least partially surrounds a compressor chamber 107.
  • a compressor wheel 109 In the compressor chamber 107 is a compressor wheel 109 for conveying and
  • Exhaust passage 105 extends a composite 110, which comprises a cover plate 111, a guide vane 115 and a rear disc 113. Between the compressor wheel 109 and the cover plate 111 exists a first gap Sl. Between the compressor wheel 109 and the rear disk 113 exists a second gap S2.
  • the radial compressor 100 further comprises a housing insert 117, which is formed in the compressor chamber 107 on the compressor housing 101. The housing insert 117 can be moved in the compressor chamber 107 both in an axial direction A and in a radial direction B. By moving the housing insert 117 in the directions A and / or B, the composite 110 shifts with respect to the compressor wheel 109. As a result, the widths of the gaps Sl and S2 also change. Due to the stiff VerbundllO of the cover plate 111, the rear plate 113 and the
  • Guide vane 115 results in the width of the gap S2 directly from the width of the gap Sl.
  • the composite 110 moves in the radial direction
  • the width of the gap Sl decreases and the width of the gap S2 increases.
  • the compressor 109 can be moved in the directions A and / or B.
  • the cover plate 111 covers a sealing gap 121 between the
  • FIG. 1 shows a purely schematic representation of a radial compressor.
  • Areas AI and A2 are not angular, but rounded to better lead a flow through the centrifugal compressor 100 can.
  • FIG. 2 shows a further cross-sectional view of the radial compressor 100.
  • an adjustment mechanism for the housing insert 117 is shown schematically in FIG.
  • the adjustment mechanism includes a spring 123 and a piston 125 which control the position of the housing insert 117.
  • the centrifugal compressor may be part of an exhaust gas turbocharger.
  • Such an exhaust-gas turbocharger can have a turbine wheel connected in a rotationally fixed manner to the compressor wheel of the radial compressor by means of a rotor shaft.

Abstract

L'invention concerne un compresseur radia destiné à un turbocompresseur à gaz d'échappement, en particulier un moteur à combustion interne, et un turbocompresseur à gaz d'échappement pourvu d'un tel compresseur radial. L'invention concerne en outre un procédé pour faire fonctionner un compresseur radial. Le compresseur radial d'un turbocompresseur à gaz d'échappement comprend : un boîtier pourvu d'un conduit d'entrée axial et d'un conduit de sortie radial qui entoure au moins partiellement une chambre de compression, une roue de compresseur disposée dans la chambre de compresseur et destinée à refouler et à comprimer un gaz, un matériau composite qui comprend une plaque de recouvrement, une plaque arrière, et au moins comportant une aube directrice. La plaque de recouvrement et la plaque arrière sont reliées par l'aube directrice et le matériau composite entoure au moins partiellement la roue de compresseur, une première fente étant ménagée entre la plaque de recouvrement et la roue de compresseur et une seconde fente étant ménagée entre la plaque arrière et la roue de compresseur, et un insert de boîtier mobile, qui est disposé dans la chambre de compression dans une zone située entre le boîtier et le disque de recouvrement, l'insert de boîtier étant adapté pour commander la largeur des première et seconde fentes.
PCT/EP2015/077119 2014-12-22 2015-11-19 Compresseur radial, turbocompresseur et procédé correspondant pour faire fonctionner un compresseur radial WO2016102128A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014226809.5 2014-12-22
DE102014226809.5A DE102014226809A1 (de) 2014-12-22 2014-12-22 Radialverdichter, Abgasturbolader und entsprechendes Verfahren zum Betreiben eines Radialverdichters

Publications (1)

Publication Number Publication Date
WO2016102128A1 true WO2016102128A1 (fr) 2016-06-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/077119 WO2016102128A1 (fr) 2014-12-22 2015-11-19 Compresseur radial, turbocompresseur et procédé correspondant pour faire fonctionner un compresseur radial

Country Status (2)

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DE (1) DE102014226809A1 (fr)
WO (1) WO2016102128A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11051654B2 (en) 2019-02-25 2021-07-06 Sharkninja Operating Llc Cooking device and components thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19705407A1 (de) * 1997-02-13 1998-08-20 Inst Luft Kaeltetech Gem Gmbh Wasserdampf-Turboverdichter
JPH11257293A (ja) * 1998-03-11 1999-09-21 Kobe Steel Ltd 遠心圧縮機の制御装置
DE102012217381A1 (de) 2012-09-26 2014-03-27 Bosch Mahle Turbo Systems Gmbh & Co. Kg Radialverdichter für einen Abgasturbolader

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19705407A1 (de) * 1997-02-13 1998-08-20 Inst Luft Kaeltetech Gem Gmbh Wasserdampf-Turboverdichter
JPH11257293A (ja) * 1998-03-11 1999-09-21 Kobe Steel Ltd 遠心圧縮機の制御装置
DE102012217381A1 (de) 2012-09-26 2014-03-27 Bosch Mahle Turbo Systems Gmbh & Co. Kg Radialverdichter für einen Abgasturbolader

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11051654B2 (en) 2019-02-25 2021-07-06 Sharkninja Operating Llc Cooking device and components thereof
US11147415B2 (en) 2019-02-25 2021-10-19 Sharkninja Operating Llc Cooking device and components thereof

Also Published As

Publication number Publication date
DE102014226809A1 (de) 2016-06-23

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