• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Axial turbine (10) of a turbocharger for expanding a medium, with a Turbinenabströmgehäuse (12), with a turbine rotor (15), and with a downstream of the turbine rotor (15) seen in the flow direction of the medium to be relaxed positioned the diffuser (17), the inner diffuser (19) and an outdoor diffuser (18). The outer diffuser (18) is an integral part of the Turbinenabströmgehäuses (12). The inner diffuser (19) is designed as a separate module and screwed or releasably connected to the bearing housing (20) or the Turbinenabströmgehäuse (12).
    公开号:CH714153A2
    申请号:CH00959/18
    申请日:2018-08-06
    公开日:2019-03-15
    发明作者:Löwlein Oswald
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    Description: The invention relates to an axial turbine of a turbocharger and a turbocharger.
    A turbocharger has a turbine for relaxing a first medium and a compressor for compressing a second medium. The turbine of the turbocharger has a turbine housing and a turbine rotor. The compressor of the turbocharger has a compressor housing and a compressor rotor. The turbine rotor and the compressor rotor are connected to each other via a shaft which is rotatably mounted in a bearing housing of the turbocharger. The bearing housing of the turbocharger is connected to both the turbine housing and the compressor housing. The turbine of a turbocharger can be designed as an axial turbine or as a radial turbine. Likewise, the compressor of a turbocharger may be designed as an axial compressor or as a centrifugal compressor.
    The present invention relates to a designed as an axial turbine turbine of a turbocharger and a turbocharger with an axial turbine.
    From DE 10 125 250 C5 the basic structure of an axial turbine of a turbocharger is known. The axial turbine has a turbine housing that includes a turbine inlet housing and a turbine exhaust housing. Furthermore, an axial turbine comprises a turbine rotor with rotor blades. As viewed in the flow direction of the medium to be expanded upstream of the turbine rotor, a nozzle is positioned, which is also referred to as a nozzle ring. In the direction of flow of the medium to be expanded downstream of the turbine rotor, a diffuser is positioned, which comprises an inner diffuser and an outer diffuser.
    From practice, it is known to perform each of the inner diffuser and the outer diffuser of the diffuser of an axial turbine as separate components or assemblies and to connect the inner diffuser and the outer diffuser individually with the turbine housing. As a result, the individual modules are indeed easy to manufacture, but they must be connected consuming each other.
    Furthermore, it is known from practice to perform both the inner diffuser and the outer diffuser as an integral part of the turbine housing, whereby although the number of modules and thus the number of connection points or interfaces between the modules can be reduced, a turbine housing with integral Innendiffusor and integral Aussendiffusor is consuming in its production.
    On this basis, the present invention has the object to provide a novel axial turbine of a turbocharger and a turbocharger. This object is achieved by an axial turbine according to claim 1. The outer diffuser is an integral part of the Turbinenabströmgehäuses. The inner diffuser is designed as a separate module and bolted to the bearing housing or Turbinenabströmgehäuse.
    With the invention it is proposed to perform the outer diffuser as an integral part of the Turbinenabströmgehäuses, but to run the inner diffuser as a separate assembly, which is preferably bolted to the bearing housing. As a result, a simple production of Turbinenabströmgehäuses by casting is still possible, on the other hand, the number of interfaces and joints is reduced.
    It is particularly preferred if the executed as a separate assembly inner diffuser is bolted to the bearing housing, since then the inner diffuser can be dismantled together with the bearing housing as a unit to allow access to the turbine rotor of the axial turbine.
    The inventive turbocharger is defined in claim 2.
    Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Embodiments of the invention will be described, without being limited thereto, with reference to the drawings. Showing:
    Fig. 1 shows an axial section through an inventive axial turbine of a turbocharger.
    Fig. 1 shows a section of an inventive axial turbine of a turbocharger.
    The axial turbine 10 of Fig. 1 comprises a turbine housing 11, wherein from the turbine housing 11 exclusively a Turbinenabströmgehäuse 12 is shown. A turbine inlet housing of the turbine housing 11 is not shown in FIG. 1, but adjoins a flange 13 of the turbine exhaust housing 12 in FIG.
    The axial turbine 10 of Fig. 1 further has a blasted rotor blades 14 turbine rotor 15. Radially outside the blades 14 of the turbine rotor 15 is followed by a so-called shroud 16 at.
    Seen in the flow direction of the medium to be relaxed upstream of the turbine rotor 15, a not-shown diffuser of the axial turbine is arranged.
    In the flow direction of the medium to be relaxed, downstream of the turbine rotor 15 is followed by a diffuser 17 which comprises an outer diffuser 18 and an inner diffuser 19.
    FIG. 1 further shows a bearing housing 20 of a turbocharger comprising the axial turbine 10. In the bearing housing 20, a not-shown shaft is mounted, which couples the turbine rotor 15 of the turbine 10 shown with a compressor rotor, not shown, of a compressor, not shown, of the turbocharger. At the side facing the turbine rotor 15 side of the bearing housing 20, the same is bounded by a flange 22.
    In the inventive axial turbine 10, the outer diffuser 18 is an integral part of the Turbinenabström housing 12th
    The inner diffuser 19, however, is designed as a separate assembly and bolted in Fig. 1 with the bearing housing 20 via screw connections, not shown. It should be noted at this point that other fastening means, e.g. positive or non-positive connections, for this purpose are suitable for connection.
    Thus, Fig. 1 shows that the inner diffuser 19 with a downstream flange 21 thereof abuts against a flange 22 of the bearing housing 20 and with this flange 21 which is formed at the downstream end of the inner diffuser 19, with the flange 22 of the bearing housing 20th connected is. The flange 21 of the inner diffuser 19 is clamped between the flange 22 of the bearing housing 20 and a flange 23 of the Turbinenabströmgehäuses 12 of the turbine housing 11.
    In contrast to the embodiment shown, it is possible to secure the designed as a separate assembly inner diffuser 19 also on the flange 23 of the Turbinenabströmgehäuses 12. Further, the inner diffuser 19 at an upstream end with the bearing housing 20, in particular with the bearing housing cover 21 thereof are connected.
    The embodiment shown in Fig. 1, in which the inner diffuser 19 is fixed with its downstream flange 21 on the bearing housing 20, however, is preferred to disassemble the inner diffuser 17 together with the bearing housing 20 and then access to the turbine rotor 15 of the axial turbine 10 release.
    With the invention, the number of modules and the number of interfaces or junctions of the assemblies of the axial turbine 10 can be reduced. Only the inner diffuser 19 of the diffuser 17 is formed as a separate assembly and preferably connected to the bearing housing 20 by screwing or other suitable fasteners. The Turbinenabströmgehäuse 12 can be removed with mounted in the bearing housing 20 turbine rotor 15 from the bearing housing 20 and inner diffuser. Alternatively, the bearing housing 20 with the mounted internal diffuser 19 and mounted turbine rotor 15 can be removed from the turbine exhaust housing. The turbine rotor 15 is easily accessible after disassembly of the bearing housing 20 and the inner diffuser 17, which can be dismantled together with the bearing housing 20. The Turbinenabströmgehäuse 12 can be easily manufactured.
    The invention further relates to a turbocharger with such an axial turbine 10. As already stated, has a turbocharger in addition to the axial turbine 10 via a compressor. The turbine rotor 15 of the axial turbine 10 is coupled to a compressor rotor, not shown, of the compressor via a shaft which is mounted in the bearing housing 20.
    [0025] 10 Axial turbine 11 Turbine housing 12 Turbine discharge housing 13 Flange 14 Blade 15 Turbine rotor 16 Shroud 17 Diffuser 18 Outer diffuser 19 Inner diffuser 20 Bearing housing 21 Flange 22 Flange
    权利要求:
    Claims (5)
    [1]
    claims
    An axial turbine (10) of a turbocharger for expanding a medium, with a Turbinenabströmgehäuse (12), with a turbine rotor (15), with a seen in the flow direction of the medium to be relaxed downstream of the turbine rotor (15) positioned diffuser (17) having a Inner diffuser (19) and an outer diffuser (18), characterized in that the Aussendiffusor (18) is an integral part of Turbinenabströmgehäuses (12), the inner diffuser (19) designed as a separate assembly and with the bearing housing (20) or with the Turbinenabströmgehäuse (12) bolted or releasably connected.
    [2]
    2. A turbocharger, comprising a turbine (10) for relaxing a first medium, wherein the turbine comprises a turbine rotor (15) and a turbine housing (11), with a compressor for compressing a second medium using in the turbine at relaxation of the first Media obtained energy, the compressor having a with the turbine rotor (15) coupled via a shaft compressor rotor and a compressor housing, with a bearing housing (20) in which the turbine rotor (15) and the compressor rotor coupling shaft is mounted, characterized the turbine (10) is an axial turbine according to claim 1.
    [3]
    3. turbocharger according to claim 2, characterized in that the inner diffuser (17) with the bearing housing (20) screwed or releasably connected.
    [4]
    4. turbocharger according to claim 3, characterized in that the inner diffuser (19) on a downstream flange (21) with a flange (22) of the bearing housing (20) is screwed,
    [5]
    A turbocharger according to claim 4, characterized in that the downstream flange (21) of the inner diffuser (19) is clamped between the flange (22) of the bearing housing (20) and a flange (23) of the turbine exhaust housing (12).
    类似技术:
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    同族专利:
    公开号 | 公开日
    DE102017120543A1|2019-03-07|
    CN109458234A|2019-03-12|
    KR20190027334A|2019-03-14|
    JP2019044775A|2019-03-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4013378A|1976-03-26|1977-03-22|General Electric Company|Axial flow turbine exhaust hood|
    DE10125250C5|2001-05-23|2007-03-29|Man Diesel Se|Axial turbine of an exhaust turbocharger with internal burst protection|
    CN101506490B|2006-08-18|2010-12-15|株式会社Ihi|Electric supercharger|
    JP2008223673A|2007-03-14|2008-09-25|Ihi Corp|Turbocharger|
    EP2685054B1|2012-07-09|2020-11-25|ABB Schweiz AG|Diffuser of an exhaust gas turbine|
    WO2015127944A1|2014-02-26|2015-09-03|Volvo Truck Corporation|A turbocompound unit|
    US10087939B2|2015-07-21|2018-10-02|Garrett Transportation I Inc.|Turbocharger systems with direct turbine interfaces|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102017120543.8A|DE102017120543A1|2017-09-06|2017-09-06|Axial turbine of a turbocharger and turbocharger|
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