CH360247A - Method of manufacturing the rotor of a turbo group for an elastic medium - Google Patents

Method of manufacturing the rotor of a turbo group for an elastic medium

Info

Publication number
CH360247A
CH360247A CH360247DA CH360247A CH 360247 A CH360247 A CH 360247A CH 360247D A CH360247D A CH 360247DA CH 360247 A CH360247 A CH 360247A
Authority
CH
Switzerland
Prior art keywords
rotor
elastic medium
manufacturing
turbo group
compressor
Prior art date
Application number
Other languages
German (de)
Inventor
Alan Judson Charles
Kellett Eric
Original Assignee
Birmingham Small Arms Co Ltd
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 Birmingham Small Arms Co Ltd filed Critical Birmingham Small Arms Co Ltd
Publication of CH360247A publication Critical patent/CH360247A/en

Links

Classifications

    • 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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
    • 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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/04—Blade-carrying members, e.g. rotors for radial-flow machines or engines
    • F01D5/043—Blade-carrying members, e.g. rotors for radial-flow machines or engines of the axial inlet- radial outlet, or vice versa, type
    • F01D5/048—Form or construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
    • F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
    • F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
    • F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure

Description

  

  Verfahren zur Herstellung des Rotors     einer    Turbogruppe     für        ein    elastisches Medium    Die vorliegende Erfindung bezieht sich auf     ein,     Verfahren zur Herstellung des Rotors einer Turbo  gruppe für ein elastisches Medium, bei welcher der  Turbinenrotor unmittelbar mit dem Rotor eines     Zen-          trifugalkompressors    über eine gemeinsame Welle .ge  kuppelt ist. Der Kompressor kann     vorteilhafterweise     zur     Aufladung    einer Maschine für innere Verbren  nung verwendet werden, von der die Auspuffgase  dazu dienen, die Turbine anzutreiben, welche den  Kompressor antreibt.

   Bei solchen Anwendungen wird  die Geschwindigkeit, mit welcher der Kompressor  angetrieben wird, durch den Druck der Auspuffgase  bestimmt, und um das Ganze für geringe     Änderungen     des Auspuffgasdruckes empfindlich zu machen, ist es  wünschbar,     das        Massenträgheitsmoment    des Rotors  der Gruppe auf ein     Minimum    zu reduzieren.  



  Gemäss der Erfindung wird der Turbinenrotor  durch ein Verfahren mit verlorenem Kern gegossen,  was gestattet, die Schaufeln des Rotors bei hohem  Genauigkeitsgrad dünn zu halten, wodurch das     Mas-          senträgheitsmoment    auf einem Minimum     gehalten     werden kann, wobei     zufolge    der Genauigkeit, mit  welcher die Schaufeln .erzeugt werden, dieselben ge  nügende Festigkeit für     ihren    vorgesehenen Verwen  dungszweck aufweisen können. Unter  Verfahren mit    verlorenem Kern  ist hierbei ein Verfahren zu ver  stehen, bei welchem     ein,    Formhohlraum     mittels    eines  verlorenen Kernes, z.

   B. eines     Wachskernes,    erzeugt  wird.  



  Der Rotor des Kompressors wird aus Leichtmetall,  z. B. Aluminium oder seinen Legierungen, gespritzt,  und     sein.        Massenträgheitsmoment    kann dadurch auf  einem Minimum gehalten werden.  



  Die Hitze, welcher der     Turbinenrotor        ausgesetzt     ist, und die Belastung, welcher die     Schaufeln    bei hoher  Drehzahl unterworfen sind, machen es wünschbar,  den Turbinenrotor durch das     genannte    Verfahren  herzustellen.



  Method for producing the rotor of a turbo group for an elastic medium The present invention relates to a method for producing the rotor of a turbo group for an elastic medium, in which the turbine rotor is directly connected to the rotor of a centrifugal compressor via a common shaft is coupled. The compressor can advantageously be used to supercharge an internal combustion engine from which the exhaust gases are used to drive the turbine which drives the compressor.

   In such applications the speed at which the compressor is driven is determined by the pressure of the exhaust gases, and in order to make the whole sensitive to small changes in the exhaust gas pressure it is desirable to reduce the mass moment of inertia of the rotor of the group to a minimum.



  According to the invention, the turbine rotor is cast by a lost core method, which allows the blades of the rotor to be kept thin with a high degree of accuracy, whereby the mass moment of inertia can be kept to a minimum, according to the accuracy with which the blades. are generated, the same ge sufficient strength for their intended use can have. Under method with lost core here is a method to be understood in which a mold cavity by means of a lost core, for.

   B. a wax core is generated.



  The rotor of the compressor is made of light metal, e.g. B. aluminum or its alloys, sprayed, and his. The mass moment of inertia can thus be kept to a minimum.



  The heat to which the turbine rotor is exposed and the stress to which the blades are subjected at high speed make it desirable to manufacture the turbine rotor by the aforesaid method.

Claims (1)

PATENTANSPRÜCHE I. Verfahren zur Herstellung des Rotors .einer Turbogruppe für ein elastisches Medium, .dadurch gekennzeichnet, dass man durch ein Verfahren mit verlorenem Kern einen Turbinenrotor mit angeform- ten Schaufeln giesst, dass man durch Spritzgiessen einen Kompressorrotor aus Leichtmetall oder Leicht metallegierung herstellt, und dass man die beiden Rotoren auf einer starren Welle in axialem Abstand befestigt. II. Nach dem Verfahren gemäss Patentanspruch I hergestellter Rotor. PATENT CLAIMS I. Process for the production of the rotor .a turbo group for an elastic medium. Characterized in that a turbine rotor with molded blades is cast by a process with a lost core, that a compressor rotor is produced from light metal or light metal alloy by injection molding, and that the two rotors are mounted on a rigid shaft at an axial distance. II. Rotor produced according to the method according to claim I.
CH360247D 1956-09-06 1957-09-06 Method of manufacturing the rotor of a turbo group for an elastic medium CH360247A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB360247X 1956-09-06

Publications (1)

Publication Number Publication Date
CH360247A true CH360247A (en) 1962-02-15

Family

ID=10384123

Family Applications (1)

Application Number Title Priority Date Filing Date
CH360247D CH360247A (en) 1956-09-06 1957-09-06 Method of manufacturing the rotor of a turbo group for an elastic medium

Country Status (1)

Country Link
CH (1) CH360247A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010115837A1 (en) * 2009-04-09 2010-10-14 Basf Se Method for producing a turbine wheel for an exhaust gas turbocharger

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010115837A1 (en) * 2009-04-09 2010-10-14 Basf Se Method for producing a turbine wheel for an exhaust gas turbocharger
CN102387882A (en) * 2009-04-09 2012-03-21 巴斯夫欧洲公司 Method for producing a turbine wheel for an exhaust gas turbocharger
JP2012523496A (en) * 2009-04-09 2012-10-04 ビーエーエスエフ ソシエタス・ヨーロピア Method for manufacturing a turbine wheel for an exhaust gas turbocharger

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