• 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:
    Turbocharger with a turbine for expanding a first medium, with a compressor for compressing a second medium using energy obtained in the turbine when the first medium is expanded, the turbine having a turbine housing and a turbine rotor (5), the compressor having a compressor housing and having a compressor rotor coupled to the turbine rotor (5) via a shaft (8), the turbine housing and the compressor housing each being connected to a bearing housing (9) arranged between them, in which the shaft (8) is mounted, and wherein an inflow housing (11) of the turbine housing is double-walled, namely from an inner, flow-guiding core (15) and an outer, force-guiding casing (16).
    公开号:CH713506B1
    申请号:CH00109/18
    申请日:2018-01-30
    公开日:2021-06-15
    发明作者:Hossbach Björn；Uhlenbrock Santiago；Rost Stefan
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    The invention relates to a turbocharger.
    Fig. 1 shows a cross section through a known from practice turbocharger 1. The turbocharger 1 shown in Fig. 1 has a turbine 2 and a compressor 3. In the turbine 2 is a first medium, in particular exhaust gas from an internal combustion engine, relaxed. The energy obtained here is used in the compressor 3 of the turbocharger 1 in order to compress a second medium, in particular charge air to be supplied to the internal combustion engine.
    The turbine 2 of the turbocharger 1 has a turbine housing 4 and a turbine rotor 5.
    The compressor 3 of the turbocharger 1 has a compressor housing 6 and a compressor rotor 7. The turbine rotor 5 and the compressor rotor 7 are coupled via a shaft 8 which is mounted in a bearing housing 9. The bearing housing 9 is connected on the one hand to the turbine housing 4 and on the other hand to the compressor housing 6. Furthermore, FIG. 1 shows an optional silencer 10 which engages the compressor housing 6 and is guided via the charge air.
    The turbine housing 4 of the turbine 2 of the turbocharger 1 has an inflow housing 11 and an outflow housing 12. Via the inflow housing 11, the first medium to be relaxed is fed to the turbine rotor 5, here in the radial direction. Relaxed medium flows away from the turbine rotor 5 via the discharge housing 12, here in the axial direction.
    In turbochargers known from practice, there is a risk of bursting in the area of the turbine 2, in particular in the area of the inflow housing 11 of the turbine housing 4 of the turbine 2. If, for example, the turbine rotor 5 bursts, fragments of the same can strike the inflow housing 11 and destroy it, so that the inflow housing 11 also bursts. Fragments can then get into the environment and pose a risk to people or objects in the vicinity. This reduces the so-called containment security.
    Proceeding from this, the present invention is based on the object of creating a new type of turbocharger.
    This object is achieved by a turbocharger according to claim 1. According to the invention, an inflow housing of the turbine housing is double-walled, namely from an inner, flow-guiding core and an outer, force-guiding shell.
    In the turbocharger according to the invention, the inflow housing of the turbine housing is double-walled. The inner core takes on the task of guiding the flow. The outer shell takes on the task of conducting power. As a result, the so-called containment security in the area of the turbine 2 can ultimately be significantly improved compared to turbochargers known from the prior art.
    Preferably, the outer, force-guiding sheath is divided into halves in the axial direction, whereas the inner, flow-guiding core is undivided in the axial direction. This configuration is preferred for a simple structural design of the turbocharger with improved containment security.
    Preferably, a radially inner portion of a first half of the outer, force-carrying sheath and a first radially inner portion of the inner, flow-guiding core are each attached to the bearing housing and / or adjoin the bearing housing. A radially inner section of a second half of the outer, force-guiding shell and a second radially inner section of the inner, flow-guiding core are each fastened to an insert piece of the turbine housing and / or adjoin the insert piece. These features also serve the simple structural design of a turbocharger with a double-walled inflow housing of the turbine housing and improved containment security.
    According to a development of the invention, a heat-insulating material is arranged in a cavity between the inner, flow-guiding core and the outer, force-guiding sheath. In this way, heat insulation can be provided in the area of the inflow housing of the turbine housing. This is advantageous both for operational safety and, on the other hand, for increasing efficiency.
    Preferred developments of the invention emerge from the dependent claims and the following description. Exemplary embodiments of the invention are explained in more detail with reference to the drawing, without being restricted thereto. It shows: FIG. 1: a cross section through a turbocharger known from practice; 2 shows a cross section through a turbocharger according to the invention in the area of an inflow housing of the turbine of the turbocharger.
    The invention relates to a turbocharger.
    A turbocharger 1 has a turbine 2 for expanding a first medium, in particular for expanding exhaust gas from an internal combustion engine. Furthermore, a turbocharger 1 has a compressor 3 for compressing a second medium, in particular charge air, using the energy obtained in the turbine 2 when the first medium is expanded.
    The turbine 2 has a turbine housing 4 and a turbine rotor 5. The compressor 3 has a compressor housing 6 and a compressor rotor 7. The compressor rotor 7 is coupled to the turbine rotor 5 via a shaft 8 which is supported in a bearing housing 9 is, wherein the bearing housing 9 is positioned between the turbine housing 4 and the compressor housing 5 and is connected to both the turbine housing 4 and the compressor housing 5.
    The turbine housing 4 of the turbine 2 comprises an inflow housing 11 and an outflow housing 12. The first medium to be expanded in the region of the turbine 2 can be fed to the turbine rotor 5 via the inflow housing 11. In the area of the turbine rotor 5, relaxed first medium flows away from the turbine 2 via the outflow housing 12.
    In addition to the inflow housing 11 and the outflow housing 12, the turbine housing 4 comprises an insert piece 13, the insert piece 13 extending in particular in the region of the inflow housing 11, namely adjacent to the turbine rotor 5, radially outwardly adjacent to rotor blades 14 of the turbine rotor 5.
    For the purposes of the present invention, the inflow housing 11 of the turbine housing 4 is double-walled and formed by an inner, flow-guiding core 15 and an outer, force-guiding sheath 16.
    The inner core 15 assumes the flow guiding function for guiding the first medium to be relaxed in the direction of the turbine rotor 5, the outer shell 16 assumes a force guiding function.
    The outer, force-carrying sheath 16 is divided into halves 16a, 16b as seen in the axial direction of the turbine 2 or the turbocharger 1. At the radially outer ends, these two halves 16a, 16b of the outer, force-carrying sheath 16 are connected to one another at flanges 17, 18. At radially inner ends or sections 19, 22, the two halves 16a, 16b are attached to the bearing housing 9 or to the insert 13 and / or adjoin these assemblies. Half 16a is in engagement with the radially inner section 19 with the bearing housing 9, and the insert piece 13 adjoins the radially inner section 22 of half 16b.
    The inner, flow-guiding core 15 surrounded by the shell 16 is undivided in the axial direction. Radially inner sections 20, 21 of the same adjoin the bearing housing 9 on the one hand and in turn on the insert piece 13 on the other hand, namely the radially inner section 20 on the bearing housing 9 and the radially inner section 21 on the insert 13.
    A cavity 23 is formed between the inner, flow-guiding core 15 and the outer, force-guiding sheath 16. According to an advantageous development, a heat-insulating material is arranged in the cavity 23 between the inner core 15 and the outer shell 16.
    In the case of the turbocharger 1 according to the invention, the inflow housing 2 is therefore double-walled. The force-guiding function and the flow-guiding function are taken over by two separate components and thus separated from one another. In particular, this can increase containment security. By arranging a heat-insulating material in the cavity 23 between the core 15 and the shell 16, the efficiency can also be increased.
    For example, a ceramic foam or mineral wool can be used as the heat-insulating material. In order to improve containment security, the heat-insulating material can be embedded in a multi-layer matrix structure. As an alternative or in addition, a heat pipe can be arranged in the cavity in order to direct a temperature line in a certain direction in the turbocharger. The materials used for the heat pipe in the lower temperature ranges are mostly copper, for example a copper wire mesh, because it is easy to shape and has a high thermal conductivity. In the case of high-temperature heat pipes, heat-resistant steels or nickel-based alloys are mainly used.
    List of reference symbols
    1 turbocharger 2 turbine 3 compressor 4 turbine housing 5 turbine rotor 6 compressor housing 7 compressor rotor 8 shaft 9 bearing housing 10 muffler 11 inflow housing 12 outflow housing 13 insert 14 blade 15 core 16 shell 16a half 16b half 17 flange 18 flange 19 section 20 section 21 section 22 Section 23 cavity
    权利要求:
    Claims (7)
    [1]
    1. Turbocharger (1),with a turbine (2) for the expansion of a first medium,with a compressor (3) for compressing a second medium using the energy obtained in the turbine (2) when the first medium is expanded,wherein the turbine (2) has a turbine housing (4) and a turbine rotor (5),wherein the compressor (3) has a compressor housing (6) and a compressor rotor (7) coupled to the turbine rotor (5) via a shaft (8),wherein the turbine housing (4) and the compressor housing (6) are each connected to a bearing housing (9) arranged between them and in which the shaft (8) is mounted, characterized in thatan inflow housing (11) of the turbine housing (4) is double-walled, namely from an inner, flow-guiding core (15) and an outer, force-guiding casing (16).
    [2]
    2. Turbocharger according to claim 1, characterized in that the outer, force-carrying sheath (16) is divided into halves (16a, 16b) in the axial direction.
    [3]
    3. Turbocharger according to claim 1 or 2, characterized in that the inner, flow-guiding core (15) is undivided in the axial direction.
    [4]
    4. Turbocharger according to claim 2 or 3, characterized in that a radially inner section (19) of a first half (16a) of the outer, force-guiding shell (16) and a first radially inner section (20) of the inner, flow-guiding core (15 ) are attached to the bearing housing (9) and / or are adjacent.
    [5]
    5. Turbocharger according to one of claims 2 to 4, characterized in that a radially inner section (22) of a second half (16b) of the outer, force-guiding shell (16) and a radially inner second section (21) of the inner, flow-guiding core (15) are each attached to and / or adjoin an insert piece (13) of the turbine housing (4).
    [6]
    6. Turbocharger according to one of claims 2 to 5, characterized in that the halves (16a, 16b) of the outer, force-carrying sheath (16) are fastened to one another on flanges (17, 18).
    [7]
    7. Turbocharger according to one of claims 1 to 6, characterized in that a heat-insulating material is arranged in a cavity (23) between the inner, flow-guiding core (15) and the outer, force-guiding shell (16).
    类似技术:
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    同族专利:
    公开号 | 公开日
    CN108506055A|2018-09-07|
    CH713506A2|2018-08-31|
    US10677096B2|2020-06-09|
    KR20180099524A|2018-09-05|
    JP2018141461A|2018-09-13|
    US20180245481A1|2018-08-30|
    DE102017103980A1|2018-08-30|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102017103980.5A|DE102017103980A1|2017-02-27|2017-02-27|turbocharger|
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