• 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:
    A turbocharger having a turbine (1) for relaxing a first medium, with a compressor for compressing a second medium using energy recovered in the turbine upon expansion of the first medium, the turbine (1) comprising a turbine housing (3) having a turbine inlet housing (4) and a turbine rotor (6), the compressor having a compressor housing and a compressor rotor coupled to the turbine rotor (6) via a shaft (7), the turbine housing (3) and the compressor housing each having a bearing housing disposed therebetween (2), in which the shaft (7) is mounted, are connected, and wherein the Turbinenzuströmgehäuse (4) and the bearing housing (2) on adjacent flanges (9, 10) are connected to each other via fastening means (11) that the flange (10) of the Turbinenzuströmgehäuses (4), through which the fastening means (11) extend, seen in the radial direction extends with axial distance into the extension region of the turbine rotor (6).
    公开号:CH713507A2
    申请号:CH00148/18
    申请日:2018-02-08
    公开日:2018-08-31
    发明作者:Hossbach Björn；Uhlenbrock Santiago
    申请人:Man Diesel & Turbo Se；
    IPC主号:
    专利说明:

    Description [0001] The invention relates to a turbocharger.
    A turbocharger has a turbine and a compressor. The turbine of the turbocharger is used for the relaxation of a first medium, in particular the relaxation of exhaust gas, wherein in the relaxation of the first medium energy is recovered. The compressor of the turbocharger serves to compress a second medium using the energy obtained during the expansion of the first medium. The turbine of the turbocharger has a turbine housing and a turbine rotor, wherein the turbine housing comprises a Turbinenzuströmgehäuse and an insert. The compressor of the turbocharger has a compressor housing and a compressor rotor. The turbine rotor of the turbine and the compressor rotor of the compressor are coupled together via a shaft which is rotatably mounted in a bearing housing. The bearing housing is connected to the turbine housing and to the compressor housing.
    In turbochargers known from practice, the bearing housing is connected to the Turbinenzuströmgehäuse of the turbine housing via a Spannpratzenverbindung. The clamping claw connection comprises at least one clamping claw and one or more fastening screws, wherein the clamping claw covers adjacent sections of the bearing housing and Turbinenzuströmgehäuse, and wherein the fastening screw (s) through the clamping claw (s) into the corresponding portion of Turbinenzuströmgehäuses extend into and here jam the turbine inlet housing and the bearing housing together. The section of the Turbinenzuströmgehäuses, in which the fastening screws of Spannspatzenverbindung extend into, is radially positioned outside of an extension region of the turbine rotor on a relatively large radius as seen in the radial direction.
    When known from practice turbochargers Spannspatzenverbindung is exposed to considerable loads. Thus, those portions of the bearing housing and Turbinenzuströmgehäuse, in the area where the Spannpratzenverbindung is positioned, different thermal loads are exposed, whereby a relative movement between the components is caused, which can lead to failure of the Spannspatzenverbindung.
    On this basis, the present invention has the object to provide a novel turbocharger. This object is achieved by a turbocharger according to claim 1. According to the invention, the turbine inlet housing and the bearing housing are connected to adjoining flanges via fastening devices such that the flange of the turbine inlet housing, through which the fastening devices extend, extends in the radial direction at an axial distance into the extension region of the turbine rotor.
    In the turbocharger according to the invention, the connection area between Turbinenzuströmgehäuse and bearing housing relative to known from the prior art turbochargers radially inward to a smaller radius or diameter is displaced, namely such that the flange of Turbinenzuströmgehäuses, trained by fastening screws designed as fastening devices extend, seen in the radial direction extends into the extension region of the turbine rotor, with an axial distance to the turbine rotor. This reduces stresses in the connected components. Further, the portions in which the fasteners are positioned experience similar thermal stresses. Overall, this can be the connection of Turbinenzuströmgehäuse and bearing housing can be improved.
    According to a development of the invention covers the turbine rotor, preferably cover the same blades, the flange of Turbinenzuströmgehäuses through which extend the fasteners, and the fasteners at least partially. This is particularly preferred for a secure connection of Turbinenzuströmgehäuse and bearing housing. Undesirable stresses in the area of the components to be connected together and the fastening devices are kept as small as possible. This ensures a secure connection of Turbinenzuströmgehäuse and bearing housing.
    Preferably, the fastening means extend from the flange of Turbinenzuströmgehäuses into the flange of the bearing housing inside. This allows a good mountability of the connection of Turbinenzuströmgehäuse and bearing housing.
    Preferably, viewed in the axial direction of the turbine in the direction of the bearing housing, the flange of Turbinenzuströmgehäuses through which extend the fasteners behind the turbine rotor and the front flange of the bearing housing, in which the fasteners extend arranged. These features also serve to securely connect Turbinenzuströmgehäuse and bearing housings while minimizing unwanted stresses in the interconnected assemblies.
    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: a fragmentary cross section in the axial direction through a turbocharger according to the invention in the region of a turbine and a bearing housing.
    The invention relates to a turbocharger. A turbocharger has a turbine for relaxing a first medium, in particular for relaxing exhaust gas of an internal combustion engine. Further, a turbocharger has a compressor for compressing a second medium, in particular charge air, using energy obtained in the turbine during the expansion of the first medium. The turbine has a turbine housing and a turbine rotor. The compressor has a compressor housing and a compressor rotor. The compressor rotor is coupled to the turbine rotor via a shaft supported in a bearing housing, the bearing housing positioned between the turbine housing and the compressor housing and connected to both the turbine housing and the compressor housing. This basic structure of a turbocharger is familiar to the person skilled in the art.
    Fig. 1 shows a schematic, fragmentary cross section through a turbocharger in the region of a designed as a radial turbine turbine 1 and a bearing housing 2. From the turbine 1, a turbine housing 3 and a turbine rotor 6 are shown. The turbine housing 3 comprises at least one turbine inlet housing 4, via which medium to be expanded can be supplied to the turbine rotor 6, and an insert piece 5, via which relaxed medium can be removed from the turbine rotor 6. Turbine rotor 6 carries blades 8.
    The turbine rotor 6 is coupled via a shaft 7 with a compressor rotor, not shown, of a compressor, wherein the shaft 7 is mounted in the bearing housing 2. The present invention now relates to details of the connection of bearing housing 2 and Turbinenzuströmgehäuse 4, which ensure a secure connection of Turbinenzuströmgehäuse 4 and bearing housing 2 while minimizing or avoiding unwanted stresses in the components to be joined together.
    As can be seen in FIG. 1, the Turbinenzuströmgehäuse 4 and the bearing housing 2 on adjacent flanges 9, 10 via fastening means 11, which are preferably designed as fastening screws, connected to each other. The flange 10 of the Turbinenzuströmgehäuses 4 through which the fasteners 11 extend, seen in the radial direction with axial distance to the turbine rotor 6 into the radial extent of the turbine rotor 6 into, so therefore the fasteners 11 over known from practice turbochargers on a relatively small radius and thus diameter are positioned. As a result, stresses in the interconnected components are minimized. In the area of the fastening devices 11 Turbinenzuströmgehäuse 4 and bearing housing 2 are exposed to approximately the same thermal loads. Undesirable relative movements between Turbinenzuströmgehäuse 4 and bearing housing 2 are minimized. Overall, the risk of failure of the connection between Turbinenzuströmgehäuse 4 and bearing housing 2 decreases.
    The turbine rotor 6 covers in the projection, the flange 10 of Turbinenzuströmgehäuses 4, through which the fastening means 11 extend, at least in sections, in particular covers the turbine rotor 6, the fastening means 11 at least partially. It can be seen that the blades 8 of the turbine rotor 6, the fastening means 11 and the flange 10 of the Turbinenzuströmgehäuses 4 through which they extend through, at least partially overlap or overlap in the projection. The above coverage is carried out seen in the radial direction, with an axial distance. Viewed in the axial direction of the turbine 1 in the direction of the bearing housing 2, the flange 10 of Turbinenzuströmgehäuses 4, through which the fasteners 11 extend, behind the blades 8 of the turbine rotor 6 and in front of the flange 9 of the bearing housing 2, in which the fasteners 11 extend into it, arranged.
    The fastening devices 11, which are designed as fastening screws, therefore extend starting from the flange 10 of the Turbinenzuströmgehäuses 4 in the flange 9 of the bearing housing 2 inside. In the illustrated embodiment of a turbocharger according to the invention, fastening devices 11, viewed in the axial direction, are rotated about 180 ° relative to fastening devices of clamping spring connections known from practice between turbine inlet housing and bearing housing.
    With the invention, a particularly secure connection of Turbinenzuströmgehäuses 4 a preferably designed as a radial turbine turbine and the bearing housing 2 of a turbocharger can be provided.
    For the purposes of this invention, radial turbines also mean so-called mixed flow turbines, in which the gas flows in the radial direction, but not only exactly perpendicular to the shaft 7, but at an angle to the shaft 7.
    Thermally induced stresses in the region of the connection between Turbinenzuströmgehäuse 4 and bearing housing 2 are reduced to a minimum, as well as unwanted relative movements between the modules to be joined together.
    List of Reference Numerals [0020] 1 turbine 2 bearing housing
    权利要求:
    Claims (7)
    [1]
    3 Turbine housing 4 Turbine inlet housing 5 Insert 6 Turbine rotor 7 Shaft 8 Blade 9 Flange 10 Flange 11 Fastening device Claims
    A turbocharger having a turbine (1) for expanding a first medium, comprising a compressor for compressing a second medium using energy recovered in the turbine during expansion of the first medium, the turbine (1) comprising a turbine housing (3). with a Turbinenzuströmgehäuse (4) and a turbine rotor (6), wherein the compressor comprises a compressor housing and with the turbine rotor (6) via a shaft (7) coupled compressor rotor, wherein the turbine housing (3) and the compressor housing in each case with a between the same arranged bearing housing (2) in which the shaft (7) is mounted, are connected, characterized in that the Turbinenzuströmgehäuse (4) and the bearing housing (2) on adjacent flanges (9, 10) in such a way via fastening means (11) connected to each other, that the flange (10) of the Turbinenzuströmgehäuses (4) through which the fastening means (11) extend, Seen in the radial direction with axial distance to the extension of the turbine rotor (6).
    [2]
    2. Turbocharger according to claim 1, characterized in that the turbine rotor (6) the flange (10) of Turbinenzuströmgehäuses (4) through which the fastening means (11) extend, at least partially covered.
    [3]
    3. turbocharger according to claim 2, characterized in that the turbine rotor (6) covers the fastening means (11) at least in sections.
    [4]
    4. turbocharger according to claim 3, characterized in that blades (8) of the turbine rotor (6) cover the fastening means (11) at least in sections.
    [5]
    5. turbocharger according to one of claims 1 to 4, characterized in that the fastening means (11), starting from the flange (10) of Turbinenzuströmgehäuses (4) in the flange (9) of the bearing housing (2) extend into it.
    [6]
    6. Turbocharger according to one of claims 1 to 5, characterized in that in the axial direction of the turbine (1) in the direction of the bearing housing (2) seen the flange (10) of Turbinenzuströmgehäuses (4), through which the fastening devices ( 11), behind the turbine rotor (6) and in front of the flange (9) of the bearing housing (2), in which the fastening means (11) extend, is arranged.
    [7]
    7. Turbocharger according to one of claims 1 to 6, characterized in that the turbine is a radial turbine.
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    同族专利:
    公开号 | 公开日
    US20180245482A1|2018-08-30|
    KR20180099509A|2018-09-05|
    CN108506054A|2018-09-07|
    DE102017104001A1|2018-08-30|
    CH713507B1|2022-01-14|
    JP2018162784A|2018-10-18|
    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102017104001.3A|DE102017104001A1|2017-02-27|2017-02-27|turbocharger|
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