EP3173630B1 - Compressor and turbocharger - Google Patents

Compressor and turbocharger Download PDF

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Publication number
EP3173630B1
EP3173630B1 EP16205770.7A EP16205770A EP3173630B1 EP 3173630 B1 EP3173630 B1 EP 3173630B1 EP 16205770 A EP16205770 A EP 16205770A EP 3173630 B1 EP3173630 B1 EP 3173630B1
Authority
EP
European Patent Office
Prior art keywords
scroll
frame
bolt
compressor
impeller
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.)
Active
Application number
EP16205770.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3173630A1 (en
Inventor
Taiji Tezuka
Toshio Nakamura
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP3173630A1 publication Critical patent/EP3173630A1/en
Application granted granted Critical
Publication of EP3173630B1 publication Critical patent/EP3173630B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • 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
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F02B39/16—Other safety measures for, or other control of, 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
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • 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
    • 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
    • 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
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/31—Retaining bolts or nuts
    • 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
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/39—Retaining components in desired mutual position by a V-shaped ring to join the flanges of two cylindrical sections, e.g. casing sections of a turbocharger

Definitions

  • the present invention relates to a compressor and a turbocharger used for an internal combustion engine.
  • a conventionally-used turbocharger for compressing air to be supplied to an internal combustion engine is equipped with a compressor including an impeller for compressing air, an air-guide cylinder for housing the impeller and guiding the air, and a scroll-chamber frame disposed adjacent to the air-guide cylinder, the scroll-chamber frame forming a scroll chamber for guiding the air having passed through the air-guide cylinder to outside.
  • the turbocharger described in Patent Document 1 includes a shock-absorbing partition wall disposed between a diffuser of a compressor and a head tank storing lubricant oil for lubricating a journal bearing so as to prevent the head tank from breaking apart to bring about oil leakage when a part of the impeller bursts and scatters outwardly.
  • Patent Document 2 refers to a method for attaching a turbocharger and housing to a turbocharger bearing housing, wherein the method comprises identifying complementary contact surfaces between the end housing and the bearing housing, applying a flowable sealing material to at least one of said complementary surfaces, drying and curing the sealing material to form a dried or cured solidified coating, and assembling the turbocharger such that the coating forms a gas barrier.
  • patent document 3 discloses a device comprising a filter sound absorber and a casing part of a compressor belonging to a turbocharger for internal combustion engines, the filter sound absorber being fastened releasably to the casing part of the compressor with the aid of fastening elements.
  • an impeller fragment may fly off outwardly in the radial direction of the impeller, and may hit the air-guide cylinder and a frame around the air-guide cylinder, for instance. If the impeller fragment hits the air-guide cylinder or a frame around the air-guide cylinder, for instance, there is a risk of generation of tensile stress in a bolt for fastening a scroll-chamber frame adjacent to the air-guide cylinder and a frame adjacent to the scroll-chamber frame, which may break the bolt.
  • Patent Document 1 describes a configuration for preventing breakage of a lubricant-oil head tank upon scatter of an impeller described above, it does not disclose breakage of the bolt due to scatter of the impeller or a solution thereto.
  • An object of the present invention is to provide a compressor and a turbocharger whereby it is possible to suppress breakage of a bolt that fastens a bearing frame and the scroll-chamber frame effectively, and to achieve a stable joint state between the frames.
  • a compressor according to the present invention is the compressor of claim 1.
  • the invention is also directed to the turbocharger of claim 10.
  • the dependent claims refer to preferred embodiments.
  • FIG. 1 is a schematic diagram illustrating an overall configuration of an internal combustion engine system 100 according to some embodiments.
  • the internal combustion engine system 100 illustrated in FIG. 1 includes an internal combustion engine 2, a turbocharger 4 for pressurizing intake air sucked into the internal combustion engine 2, and a generator 8 driven by a turbine 6 of the turbocharger 4.
  • the turbocharger 4 illustrated in FIG. 1 includes a compressor 10 of centrifugal type for pressurizing intake air sucked into the internal combustion engine 2, a turbine 6 coupled to the compressor 10 via a rotation shaft 12 and driven by exhaust gas of the internal combustion engine 2, and a silencer 13 for reducing noise that the compressor 10 generates.
  • the turbocharger 4 illustrated in FIG. 1 is a supercharger of exhaust-turbine drive type, which is called a turbocharger, in which the compressor 10 is driven by the turbine 6 driven by exhaust gas of the internal combustion engine 2.
  • the turbocharger 4 may be a supercharger of mechanical drive type, which is called a supercharger, in which the compressor 10 is driven by power extracted from an output shaft of the internal combustion engine 2 via a belt or the like.
  • a diesel engine or a gasoline engine may be suitably selected as the internal combustion engine 2 for instance.
  • FIG. 2 is a schematic cross-sectional view of a part of a turbocharger 4 according to some embodiments.
  • the compressor 10 illustrated in FIG. 2 includes an impeller 14 for compressing air, an air-guide cylinder 16 housing the impeller 14 and guiding air, a scroll-chamber frame 20, and a second or bearing frame 40.
  • the impeller 14 includes a hub 15 and a plurality of blades 17 disposed around the hub 15.
  • the scroll-chamber frame 20 is disposed adjacent to the air-guide cylinder 16, and includes a scroll-chamber forming portion 19 which forms a scroll chamber 18 for guiding air that has passed through the air-guide cylinder 16 to outside.
  • the second or bearing frame 40 includes a bearing portion 44 for pivotably supporting a rotation shaft 12 of the impeller 14.
  • the silencer 13 includes a silencer frame 22 disposed adjacent to the scroll-chamber frame 20.
  • a flange portion 23 of the scroll-chamber frame 20 and a flange portion 24 of the silencer frame 22 are fastened to each other by a first bolt 25.
  • a spacer 28 (see FIG. 3 ) may be disposed between a head portion 26 of the bolt 25 and the scroll-chamber frame 20.
  • a flange portion 46 of the bearing frame 40 and a flange portion 29 of the scroll-chamber frame 20 are fastened to each other by a second or fastening bolt 48.
  • an impeller fragment may fly apart outwardly in the radial direction of the impeller 14, and may hit the air-guide cylinder 16, the scroll-chamber frame 20, or the like.
  • the hit causes an inlet 32 of the air-guide cylinder 16 to move toward the silencer 13 in the direction S of the arrow (see FIG. 3 ) and hit an outlet 43 of the silencer frame 22.
  • the flange portion 24 of the silencer frame 22 tries to move away from the flange portion 23 of the scroll-chamber frame 20, which leads to generation of tensile stress on the bolt 25.
  • the compressor 10 and the turbocharger 4 are configured such that the spacer 28 may be disposed between the head portion 26 of the bolt 25 and the scroll-chamber frame 20, which makes it possible to fasten the scroll-chamber frame 20 and the silencer frame 22 using the bolt 25 with a shank portion 31 (see FIG. 3 ) having a large length (shank length) as compared to a case where the spacer 28 is not provided.
  • a shank portion 31 see FIG. 3
  • the spacer 28 is not provided, it is possible to secure a large amount of extension to which the bolt 25 can extend without breaking when receiving tensile load in the axial direction.
  • the spacer 28 illustrated in FIG. 3 is formed in a sleeve shape and disposed so as to surround the shank portion 31 of the bolt 25, and the inside diameter d 1 of the spacer 28 is smaller than the diameter d 2 of the head portion 26 of the bolt 25.
  • the dimension d 3 of the spacer 28 in the axial direction of the bolt 25 illustrated in FIG. 3 is greater than the dimension d 4 of the spacer 28 in the radial direction of the spacer 28.
  • FIG. 3 an example in which tensile stress is generated due to breakage of the impeller 14 on the bolt 25 fastening the scroll-chamber frame 20 and the silencer frame 22 is described.
  • tensile stress may be generated due to breakage of the impeller 14 on the second or fastening bolt 48 fastening the scroll-chamber frame 20 and the bearing frame 40.
  • the impeller fragment enters a diffuser portion 50 illustrated in FIG. 2 and gets stuck in the diffuser portion 50, the impeller fragment presses the diffuser portion 50 to expand in the axial direction of the impeller 14.
  • the scroll-chamber frame 20 and the bearing frame receive a force in a direction away from each other, and thus the scroll-chamber frame 20 deforms as illustrated in FIG. 4 and tensile stress is generated on the bolt 48.
  • the spacer 28 described with reference to FIG. 3 may be disposed between the head portion 52 of the bolt 48 and the scroll-chamber frame 20 to make the shank portion 53 of the bolt 48 longer than that illustrated in FIG. 4 .
  • the flange portion 29 of the scroll-chamber frame 20 is disposed so as to extend outwardly from the scroll-chamber forming portion 19 in the radial direction of the impeller 14.
  • the turbocharger 4 and the compressor 10 illustrated in FIG. 2 includes a clamp 54 configured to nip the scroll-chamber frame 20 and the bearing frame 40 as illustrated in FIGs. 5 and 6 .
  • FIG. 5 is a view of the flange portion 29 of the scroll-chamber frame 20 and the flange portion 46 of the bearing frame 40 as seen from direction P in FIG. 2 , illustrating the arrangement of the bolt 48 and the clamp 54.
  • FIG. 6 is a schematic cross-sectional view for describing a structure of the clamp 54.
  • the clamp 54 illustrated in FIGs. 5 and 6 includes a pressing bolt 56 that applies a pressing force to the bearing frame 40 from the opposite side from the flange portion 29 of the scroll-chamber frame 20.
  • a pressing bolt 56 that applies a pressing force to the bearing frame 40 from the opposite side from the bearing frame 40.
  • the clamp 54 is configured to nip the scroll-chamber frame 20 and the bearing frame 40. It is also possible that a clamp configured to nip the scroll-chamber frame 20 and the silencer frame 22 may be used. In this way, it is possible to join the scroll-chamber frame 20 and the silencer frame 22 stably.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Supercharger (AREA)
EP16205770.7A 2013-09-25 2014-06-30 Compressor and turbocharger Active EP3173630B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2013198638A JP6097188B2 (ja) 2013-09-25 2013-09-25 過給機
PCT/JP2014/067415 WO2015045541A1 (ja) 2013-09-25 2014-06-30 圧縮機及び過給機
EP14849505.4A EP3009633B1 (en) 2013-09-25 2014-06-30 Compressor and supercharger

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP14849505.4A Division EP3009633B1 (en) 2013-09-25 2014-06-30 Compressor and supercharger
EP14849505.4A Division-Into EP3009633B1 (en) 2013-09-25 2014-06-30 Compressor and supercharger

Publications (2)

Publication Number Publication Date
EP3173630A1 EP3173630A1 (en) 2017-05-31
EP3173630B1 true EP3173630B1 (en) 2018-08-15

Family

ID=52742699

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16205770.7A Active EP3173630B1 (en) 2013-09-25 2014-06-30 Compressor and turbocharger
EP14849505.4A Active EP3009633B1 (en) 2013-09-25 2014-06-30 Compressor and supercharger

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP14849505.4A Active EP3009633B1 (en) 2013-09-25 2014-06-30 Compressor and supercharger

Country Status (5)

Country Link
EP (2) EP3173630B1 (ko)
JP (1) JP6097188B2 (ko)
KR (1) KR101799707B1 (ko)
CN (1) CN107701298B (ko)
WO (1) WO2015045541A1 (ko)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3053384B1 (fr) * 2016-06-30 2018-07-27 Safran Aircraft Engines Ensemble de fixation d'un distributeur a un element de structure d'une turbomachine
JP6517386B2 (ja) * 2018-02-13 2019-05-22 三菱重工業株式会社 遠心圧縮機および過給機
JP2022057340A (ja) * 2020-09-30 2022-04-11 三菱重工マリンマシナリ株式会社 回転機械および回転機械の補修方法

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Also Published As

Publication number Publication date
KR101799707B1 (ko) 2017-11-20
EP3173630A1 (en) 2017-05-31
KR20160023893A (ko) 2016-03-03
EP3009633B1 (en) 2020-02-05
CN107701298B (zh) 2020-03-27
JP2015063956A (ja) 2015-04-09
EP3009633A4 (en) 2016-09-14
JP6097188B2 (ja) 2017-03-15
CN105531460A (zh) 2016-04-27
WO2015045541A1 (ja) 2015-04-02
CN107701298A (zh) 2018-02-16
EP3009633A1 (en) 2016-04-20

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