WO2015077380A1 - Carter de compresseur en deux parties - Google Patents

Carter de compresseur en deux parties Download PDF

Info

Publication number
WO2015077380A1
WO2015077380A1 PCT/US2014/066472 US2014066472W WO2015077380A1 WO 2015077380 A1 WO2015077380 A1 WO 2015077380A1 US 2014066472 W US2014066472 W US 2014066472W WO 2015077380 A1 WO2015077380 A1 WO 2015077380A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressor
backplate
cover
volute
wall
Prior art date
Application number
PCT/US2014/066472
Other languages
English (en)
Inventor
Gordon C. Jenks
Abraham C. Narehood
Ranjeet D. VADER
Original Assignee
Borgwarner Inc.
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 Borgwarner Inc. filed Critical Borgwarner Inc.
Publication of WO2015077380A1 publication Critical patent/WO2015077380A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • 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
    • 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
    • F04D29/422—Discharge tongues
    • 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
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps 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
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers

Definitions

  • This disclosure relates to cast compressor covers. More particularly, this disclosure relates to a compressor and method of forming a shaped volute of the compressor using a reusable mold process.
  • a turbocharger is a type of forced induction system used with internal combustion engines. Turbochargers deliver compressed air to an engine intake, allowing more fuel to be combusted, thus boosting the horsepower of the engine without significantly increasing engine weight. Turbochargers allow for the use of smaller engines having the same amount of horsepower as larger, normally aspirated engines. The use of a smaller engine in a vehicle decreases the mass of the vehicle, increases performance, and enhances fuel economy. Moreover, turbochargers provide a more complete combustion of the fuel delivered to the engine, which contributes to the highly desirable goal of a cleaner environment.
  • Turbochargers typically include a turbine housing connected to the exhaust manifold of the engine, a compressor housing connected to the intake manifold of the engine, and a center bearing housing coupled between the turbine and compressor housings.
  • a turbine wheel in the turbine housing is rotatably driven by an inflow of exhaust gas supplied from the exhaust manifold.
  • a shaft rotatably supported in the center bearing housing connects the turbine wheel to a compressor impeller in the compressor housing so that rotation of the turbine wheel causes rotation of the compressor impeller.
  • the shaft connecting the turbine wheel and the compressor impeller defines an axis of rotation. As the compressor impeller rotates, it increases the air mass flow rate, airflow density and air pressure delivered to cylinders of the engine via the intake manifold.
  • a turbocharger compressor generally consists of three essential components, the compressor housing, a compressor wheel disposed in the compressor housing, and a diffuser.
  • the compressor housing includes an outer portion having an outer wall that forms the compressor volute and a backplate.
  • the diffuser slows down the air and allows the air pressure and temperature to rise.
  • the diffuser is formed by the compressor backplate and a portion of the volute, and serves to collect the air and to further decrease the velocity of the air flow prior to exiting the compressor.
  • compressor volute shapes require that the compressor housing is formed using sand cast technologies and prevent the use of a reusable mold.
  • "Closed" compressor volute designs include an outer cover which contains an outer volute portion, an insert or diffuser portion which forms an inner volute portion and a backplate.
  • the backplate can be either a straight/standard backplate or a backplate that incorporates a portion of the curved volute shape.
  • the outer volute portion, insert/diffuser and backplate together form the inner/curved shape of the "closed” volute design. Flow in a "closed” compressor volute is spun gradually about the inner/curved shape of the volute.
  • This disclosure details the use of a compressor housing that is formed using a reusable mold technique wherein the compressor housing includes a two-piece structure including of a compressor cover portion and a compressor backplate.
  • the compressor cover portion of the compressor housing is very much similar to a conventional compressor outer housing portion having a standard or "open" volute shaped design. In this instance; however, half of the compressor volute shape is formed in the compressor cover and the other half of the compressor volute shape is formed by the compressor backplate.
  • the compressor cover and backplate together, act to mimic the flow demonstrated by "closed" volute designs where the air flow is guided through the diffuser and into the curved shape of the volute.
  • the compressor housing and method disclosed herein eliminates the need for a diffuser/insert and/or core element typically used in the manufacturing process because portions of the "open" volute shaped compressor cover and the backplate act to form the "diffuser" portion of the compressor thereby reducing flow losses, improving stage performance, allowing for an ease of manufacture and assembly and decreasing overall production costs.
  • Figure 1 is a perspective view of the compressor.
  • Figure 2 is a cross-sectional view of the two-piece compressor housing.
  • Figure 3A is perspective view of the cover of the two-piece compressor housing.
  • Figure 3B is perspective view of the backplate of the two-piece compressor housing.
  • Figure 4 is a cross-sectional view of a die cast/injection mold apparatus including the inventive mold.
  • a compressor (10) is provided for increasing the mass flow intake of air entering the turbocharger (not shown).
  • the compressor (10) consists of a two-piece housing (12) comprising a cover (14) and a backplate
  • the cover (14) mimics the conventional "open” volute design wherein the cover (14) includes a first diffuser face (18) that extends into a transverse wall (20), an upper curved portion
  • the opposing wall (24) further includes a first stepped portion (24a) and a second stepped portion (24b).
  • the backplate (16) includes a second diffuser face (26) that continues into a lower curved portion (22b).
  • (16) further includes a shaped area (28a) formed at one end thereof and an end wall (28b) formed at an opposing end thereof.
  • the shaped area (28a) conforms to and engages the second stepped portion (24b) of the opposing wall (24) of the cover (14) and the end wall (28b) conforms to and engages the first stepped portion (24a) of the opposing wall (24) of the cover (14).
  • the first and second stepped portions (24a, 24b) formed in the opposing wall (24) of the cover (14) mate with the end wall (28b) of the backplate (16) and the shaped area (28a) of the outer wall (28) of the backplate (16); respectively, to form the compressor volute (22) and space the backplate (16) from the cover (14) such that the first diffuser face (18) of the compressor cover (14) and the second diffuser face (26) of the backplate (16) form the compressor diffuser (30).
  • both the cover (14) and the backplate (16) can each include a half tongue portion (62a, 62b) such that when the cover (14) and backplate are joined together to form the compressor housing (12), a full compressor tongue is formed (not shown) and allows the flow of air to be guided properly, thereby increasing flow capacity.
  • the cover (14) and backplate (16) are held together by conventional fixing/connecting methods and devices such as screws, etc.
  • the combination of the cover (14) and backplate (16) to form the compressor housing (12) improves aerodynamic performance and increases efficiency.
  • a reusable mold device (40) for forming a compressor housing (12) is provided.
  • the reusable mold device (40) is used in a reusable mold process, disclosed in detail below, such as a die casting or injection molding.
  • the reusable mold device (40) consists of a two-piece mold used to form the compressor (10).
  • the two piece mold comprises a compressor cover portion (42a) and a backplate portion (42b).
  • the compressor cover portion (42a) comprises a first volute portion (not shown) formed therein.
  • the first volute portion includes a first diffuser face forming portion (not shown), a transverse wall forming portion (not shown), an upper curve forming portion (not shown), and an opposing wall forming portion (not shown).
  • the opposing wall forming portion further includes a first step forming portion (not shown) and a second step forming portion (not shown).
  • the first diffuser face forming portion, transverse wall forming portion, upper curve forming portion, opposing wall forming portion, and first and second step forming portions correspond; respectively, to form the first diffuser face (18), transverse wall (20), upper curved portion (22a), outer wall (24), and first and second stepped portions (24a, 24b) of the cover (14).
  • the backplate portion (42b) comprises a second volute portion (not shown) formed therein.
  • the second volute portion includes a second diffuser face forming portion (not shown), a lower curve forming portion (not shown), and an outer wall forming portion (not shown).
  • the outer wall forming portion further includes a shaped area forming portion (not shown) and an end wall forming portion (not shown).
  • the second diffuser face forming portion, lower curve forming portion, outer wall forming portion, shaped area forming portion, and end wall forming portion correspond; respectively, to form the second diffuser face (26), lower curved portion (22b), outer wall (28), shaped area (28a), and end wall (28b)of the backplate (16).
  • the first volute portion of the reusable mold device (40) represents one half of the compressor volute (22), while the second volute portion of the reusable mold device (40) represents the second half of the compressor volute (22).
  • the compressor cover portion (42a) and a backplate portion (42b) of the reusable mold device (40) may further include half tongue contour forming portions (not shown); respectively, and are used to form the tongue (32) of the compressor (10). While the two-piece mold consists of the compressor cover portion and backplate portion, the compressor cover (14) and backplate (16) may be formed either separately or together using the two-piece reusable mold and process detailed below.
  • a method of forming the compressor housing (12) using the two-piece reusable mold device (40), detailed above, is provided.
  • the compressor cover (14) and backplate (16) may be formed either separately or together using the two-piece reusable mold device (40) in a die cast or an injection molding process.
  • the compressor cover portion (42a) and backplate portion (42b) of the reusable two-piece mold are each joined with a second/opposing mold member (44) and placed individually in a die cast or injection mold assembly similar to that detailed in Figure 4, and secured by ejector pins/bolts 46, etc..
  • material M such as plastic or metal, etc. is poured into the die cast or injection mold assembly and delivered to the compressor cover portion (42a) or the backplate portion (42b) where the conventional die cast or injection mold process is carried out accordingly.
  • both the compressor cover portion (42a) and the backplate portion (42b) of the reusable two-piece mold are each joined with a second/opposing mold member (44) and placed together in a die cast or injection mold assembly, also similar to that detailed in Figure 4, and secured by ejector pins/bolts (46), etc..
  • Compressor (10) includes an outlet (64), shown in figure 3 A, but not described in detail.
  • the outlet (64) is a conventional compressor outlet, but requires special attention when forming compressor housing (12) using either the die cast or injection mold processes.
  • a separate pull tool (not shown), that conforms to the shape of the inner diameter of the outlet (64), is used to ensure the outlet (64) is properly formed.
  • the outlet (64) may also be formed by having a half-shaped contour thereof be included in both the compressor cover and backplate mold portions (not shown). As such, the outlet (64) is formed along with the compressor cover (14) and backplate (16) in either the die cast or injection mold processes detailed above.

Landscapes

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

Abstract

L'invention concerne un carter de compresseur en deux parties comprenant un couvercle et une plaque arrière pour enfermer la roue de compresseur. Le couvercle comprend une première face de diffuseur qui s'étend dans une paroi transversale 5 qui s'étend dans une partie incurvée supérieure qui se termine dans une paroi opposée; et forment ensemble une première moitié de la volute de compresseur. La plaque arrière comprend une seconde face de diffuseur qui s'étend dans une partie incurvée inférieure et se termine dans une paroi extérieure et forme la seconde moitié de la volute de compresseur.
PCT/US2014/066472 2013-11-25 2014-11-19 Carter de compresseur en deux parties WO2015077380A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361908239P 2013-11-25 2013-11-25
US61/908,239 2013-11-25

Publications (1)

Publication Number Publication Date
WO2015077380A1 true WO2015077380A1 (fr) 2015-05-28

Family

ID=53180115

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/066472 WO2015077380A1 (fr) 2013-11-25 2014-11-19 Carter de compresseur en deux parties

Country Status (1)

Country Link
WO (1) WO2015077380A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3141761A1 (fr) 2015-09-08 2017-03-15 Siemens Aktiengesellschaft Boîtier à spirales, turbomachine radiale, procédé de montage
EP3173627A1 (fr) * 2015-11-27 2017-05-31 OTICS Corporation Procédé pour fabriquer un carter de compresseur
US10519974B2 (en) 2017-10-17 2019-12-31 Borgwarner Inc. Multi-piece compressor housing for a turbocharger
WO2021253076A1 (fr) * 2020-06-15 2021-12-23 Hc-Atm Group Pty Ltd Ensemble boîtier
US11421695B2 (en) 2018-01-19 2022-08-23 Concepts Nrec, Llc Turbomachines with decoupled collectors

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4383799A (en) * 1980-04-07 1983-05-17 Toyota Iidosha Kogyo Kabushiki Kaisha Ring and groove contraction for assembling a turbocharger
US6948320B2 (en) * 2003-03-12 2005-09-27 Atlas Copco Energas Gmbh Expansion turbine stage
US20070256412A1 (en) * 2006-05-08 2007-11-08 Honeywell International, Inc. Compressor stage assembly lock
JP2009243396A (ja) * 2008-03-31 2009-10-22 Ihi Corp シール部構造及び過給機
JP2013185563A (ja) * 2012-03-12 2013-09-19 Otics Corp 過給機用のコンプレッサハウジング

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4383799A (en) * 1980-04-07 1983-05-17 Toyota Iidosha Kogyo Kabushiki Kaisha Ring and groove contraction for assembling a turbocharger
US6948320B2 (en) * 2003-03-12 2005-09-27 Atlas Copco Energas Gmbh Expansion turbine stage
US20070256412A1 (en) * 2006-05-08 2007-11-08 Honeywell International, Inc. Compressor stage assembly lock
JP2009243396A (ja) * 2008-03-31 2009-10-22 Ihi Corp シール部構造及び過給機
JP2013185563A (ja) * 2012-03-12 2013-09-19 Otics Corp 過給機用のコンプレッサハウジング

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3141761A1 (fr) 2015-09-08 2017-03-15 Siemens Aktiengesellschaft Boîtier à spirales, turbomachine radiale, procédé de montage
EP3173627A1 (fr) * 2015-11-27 2017-05-31 OTICS Corporation Procédé pour fabriquer un carter de compresseur
US10519974B2 (en) 2017-10-17 2019-12-31 Borgwarner Inc. Multi-piece compressor housing for a turbocharger
US11421695B2 (en) 2018-01-19 2022-08-23 Concepts Nrec, Llc Turbomachines with decoupled collectors
WO2021253076A1 (fr) * 2020-06-15 2021-12-23 Hc-Atm Group Pty Ltd Ensemble boîtier

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