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EP0590254A1 - Diffuseur radial réglable - Google Patents

Diffuseur radial réglable Download PDF

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Publication number
EP0590254A1
EP0590254A1 EP93111495A EP93111495A EP0590254A1 EP 0590254 A1 EP0590254 A1 EP 0590254A1 EP 93111495 A EP93111495 A EP 93111495A EP 93111495 A EP93111495 A EP 93111495A EP 0590254 A1 EP0590254 A1 EP 0590254A1
Authority
EP
European Patent Office
Prior art keywords
diffuser
adjusting elements
radial
adjusting
plates
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.)
Granted
Application number
EP93111495A
Other languages
German (de)
English (en)
Other versions
EP0590254B1 (fr
Inventor
Albrecht Weigel
Uwe Schmidt-Eisenlohr
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.)
MTU Aero Engines AG
Original Assignee
MTU Motoren und Turbinen Union Muenchen 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 MTU Motoren und Turbinen Union Muenchen GmbH filed Critical MTU Motoren und Turbinen Union Muenchen GmbH
Publication of EP0590254A1 publication Critical patent/EP0590254A1/fr
Application granted granted Critical
Publication of EP0590254B1 publication Critical patent/EP0590254B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F05D2250/52—Outlet

Definitions

  • the diffuser narrow surfaces should be as large as possible, and correspondingly smaller at the maximum pressure ratio.
  • the diffuser blades adjustable in different ways in order to be able to vary the said diffuser surfaces.
  • a simple mounting of the adjustment elements in the diffuser housing via bearing pins concentric to the adjustment axes guarantees exact adjustability even under thermal stress.
  • a further, improved embodiment of the invention is given by the features of claims 8 and 9, whereby the diffuser channels of the throttled radial diffuser, i. H. remain in the position of the adjusting elements belonging to the smallest narrow cross section, without free spaces between the plates and without its influence on the flow. If the adjustment elements are not throttled, i.e. H. at the maximum size of the narrow cross section, the plate exit edges lie on a common circle, so that a stepless diffuser outlet is formed.
  • a radial compressor 1 which rotates about the longitudinal axis L of the compressor.
  • the delivered gas flow is conveyed into the area of the diffuser blades 4 of the radial diffuser 5 via the radial blades 3 distributed around the circumference of the radial compressor 1.
  • the air is then collected in the air collecting spiral 6 and fed to a further compressor or a combustion chamber connected downstream.
  • the radial compressor 1 drive energy supplied from the outside is thus converted into potential and kinetic energy of the flow medium.
  • the kinetic energy is then partially converted into potential energy in the form of pressure by deceleration.
  • the delay mentioned is determined by the contour of the diffuser blades 4.
  • the adjustment axis V is perpendicular to the bisector W of the plates 8 of each adjustment element 7, as shown in FIGS. 2 and 3.
  • the adjusting elements 7 are arranged obliquely in the diffuser ring space, the element angle ⁇ measured between the bisector W and a radial R which is perpendicular to the Compressor longitudinal axis L and the adjustment axis V is 90 ° - 180 °, but here is approximately 120 °.
  • the element angle ⁇ of each adjusting element 7 can be varied by the same amount.
  • the adjustment axis V of all adjustment elements 7 are arranged parallel and at the same radial distance a to the longitudinal axis L of the compressor, as can be seen in FIGS. 1 and 2.
  • the adjusting elements 7, which are evenly spaced apart from one another with the pitch angle ⁇ in the circumferential direction of the radial diffuser 5, can be seen in FIG. 2.
  • the plates 8 of adjacent adjusting elements 7 lie tightly and continuously along their edges 9a.
  • the adjusting elements 7 are spaced apart from one another along adjacent plates 8, ie a gap 16 is formed over the edge length between the edges 9a of adjacent plates 8.
  • the arcuate radially outer edges 9b of the plates 8 come to rest on a cylinder surface Z which is concentric to the longitudinal axis L of the compressor, this cylinder surface Z being part of the diffuser housing 16.
  • the arc radius of the outer edges 9b thus corresponds to that Radius of this cylinder surface Z.
  • FIG. 9 shows the positioning of the adjusting elements 7 between two diffuser walls 20 of the diffuser housing 16 which are perpendicular to the longitudinal axis L of the compressor.
  • the nozzle walls 20 each have a milling which is concentric to the longitudinal axis L of the compressor and which accommodate the plates 8, the transitions of the plates on the inlet and outlet sides 8 are largely stepless to the nozzle walls 20.
  • a seal 21 which extends in the radial direction, is arranged to avoid cross-flows.
  • the plates 8 are outside the diffuser channel 13 with the adjusting axis V coaxial bearing pin 22 which are received in holes in the nozzle walls 20.
  • a plate 8 of an adjustment element has an adjustment pin 23, which is coupled to an adjustment device 24.
  • the nozzle walls 20 are connected to one another via webs 25.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP93111495A 1992-07-30 1993-07-17 Diffuseur radial réglable Expired - Lifetime EP0590254B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4225126 1992-07-30
DE4225126A DE4225126C1 (fr) 1992-07-30 1992-07-30

Publications (2)

Publication Number Publication Date
EP0590254A1 true EP0590254A1 (fr) 1994-04-06
EP0590254B1 EP0590254B1 (fr) 1996-01-24

Family

ID=6464416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93111495A Expired - Lifetime EP0590254B1 (fr) 1992-07-30 1993-07-17 Diffuseur radial réglable

Country Status (5)

Country Link
US (1) US5342168A (fr)
EP (1) EP0590254B1 (fr)
AT (1) ATE133473T1 (fr)
DE (1) DE4225126C1 (fr)
ES (1) ES2083229T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7147433B2 (en) * 2003-11-19 2006-12-12 Honeywell International, Inc. Profiled blades for turbocharger turbines, compressors, and the like
US20080286136A1 (en) * 2007-05-17 2008-11-20 Purvines Stephen H Fan housing
US8511981B2 (en) * 2010-07-19 2013-08-20 Cameron International Corporation Diffuser having detachable vanes with positive lock
US8683791B2 (en) 2010-08-20 2014-04-01 Toyota Motor Engineering & Manufacturing North America, Inc. Method and system for homogenizing exhaust from an engine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH492130A (de) * 1968-08-20 1970-06-15 Escher Wyss Ag Das Laufrad eines Zentrifugalverdichters koaxial umschliessender, für die Anströmung mit Überschallgeschwindigkeit bestimmter Leitapparat
DE1952423A1 (de) * 1969-10-17 1971-05-27 Garrett Corp Schaufeldichtung
FR2233510A1 (fr) * 1973-06-18 1975-01-10 Turbokonsult Ab
DE2433726A1 (de) * 1974-07-13 1976-01-29 Motoren Turbinen Union Turboverdichter-austrittsleitvorrichtung
US3963369A (en) * 1974-12-16 1976-06-15 Avco Corporation Diffuser including movable vanes
EP0134748A2 (fr) * 1983-09-12 1985-03-20 Carrier Corporation Diffuseurs à largeur variable
US4642026A (en) * 1983-07-26 1987-02-10 Ruff John D Centrifugal compressor with adjustable diffuser

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2985427A (en) * 1955-11-25 1961-05-23 Gen Electric Adjustable blading for fluid flow machines
US2904307A (en) * 1956-10-01 1959-09-15 Crane Co Cooling turbine
US3069070A (en) * 1961-11-14 1962-12-18 Worthington Corp Diffuser vane system for turbomachinery
GB1036485A (en) * 1964-06-05 1966-07-20 Bristol Siddeley Engines Ltd Improvements in or relating to a reversible, inward flow, independent power turbine
GB1510629A (en) * 1974-08-08 1978-05-10 Penny Turbines Ltd N Centrifugal compressor or centripetal turbine
JPS5677598A (en) * 1979-11-30 1981-06-25 Nissan Motor Co Ltd Variable-position diffuser for centrifugal compressor
US4325673A (en) * 1980-03-10 1982-04-20 General Motors Corporation Variable vane seal
US4770605A (en) * 1981-02-16 1988-09-13 Mitsubishi Jukogyo Kabushiki Kaisha Diffuser device in a centrifugal compressor and method for manufacturing the same
JPS5815797A (ja) * 1981-07-22 1983-01-29 Nissan Motor Co Ltd 可変デイフユ−ザ

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH492130A (de) * 1968-08-20 1970-06-15 Escher Wyss Ag Das Laufrad eines Zentrifugalverdichters koaxial umschliessender, für die Anströmung mit Überschallgeschwindigkeit bestimmter Leitapparat
DE1952423A1 (de) * 1969-10-17 1971-05-27 Garrett Corp Schaufeldichtung
FR2233510A1 (fr) * 1973-06-18 1975-01-10 Turbokonsult Ab
DE2433726A1 (de) * 1974-07-13 1976-01-29 Motoren Turbinen Union Turboverdichter-austrittsleitvorrichtung
US3963369A (en) * 1974-12-16 1976-06-15 Avco Corporation Diffuser including movable vanes
US4642026A (en) * 1983-07-26 1987-02-10 Ruff John D Centrifugal compressor with adjustable diffuser
EP0134748A2 (fr) * 1983-09-12 1985-03-20 Carrier Corporation Diffuseurs à largeur variable

Also Published As

Publication number Publication date
EP0590254B1 (fr) 1996-01-24
US5342168A (en) 1994-08-30
ATE133473T1 (de) 1996-02-15
ES2083229T3 (es) 1996-04-01
DE4225126C1 (fr) 1993-04-01

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