• 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 for relaxing a first medium, with a compressor for compressing a second medium using energy recovered in the turbine during expansion of the first medium, wherein a turbine housing of the turbine and a compressor housing of the compressor connected to a bearing housing arranged therebetween are, and with the turbine housing and / or the compressor housing and / or the bearing housing radially outwardly and axially outside at least partially surrounding casing (2), which is connected to the respective housing to be boarded via a plurality of fastening means (5, 6). At least one fastening device (5) forms a fixed-bearing-like connection and at least one fastening device (6) a loslagerartige connection of the casing (2) on the respective housing to be boarded.
    公开号:CH714944A2
    申请号:CH4372019
    申请日:2019-04-01
    公开日:2019-10-31
    发明作者:Spatz Urban；Braun Steffen；Albrecht Daniel；Denkel Harald；Weihard Stefan；Haas Bernd；Niebuhr Johannes
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    Description: The invention relates to a casing of a turbocharger and a turbocharger.
    The basic structure of a turbocharger is known to those skilled in the art. A turbocharger has a turbine in which a first medium is expanded. Furthermore, a turbocharger has a compressor in which a second medium is compressed, using the energy obtained in the turbine when the first medium is expanded. The turbine of the turbocharger has a turbine housing and a turbine rotor. The turbocharger's compressor has a compressor housing and a compressor rotor. A bearing housing is positioned between the turbine housing of the turbine and the compressor housing of the compressor, the bearing housing being connected on the one hand to the turbine housing and on the other hand to the compressor housing. A shaft is mounted in the bearing housing, via which the turbine rotor is coupled to the compressor rotor.
    In the operation of a turbocharger, there is a risk that a rotor, for example the turbine rotor or the compressor rotor, of the turbocharger breaks and fragments of the rotor break through the corresponding housing, that is to say the turbine housing or the compressor housing. There is then a risk that the fragments of the turbocharger get into the environment. In order to take account of this problem of the bursting of a rotor of the turbocharger, the respective housing in turbochargers known from practice is designed such that a damage to the respective housing is not to be expected and even if the respective rotor breaks, fragments thereof do not penetrate the respective housing can. However, this increases the weight of the turbocharger.
    In order not to unnecessarily increase the weight of the turbocharger, it is already known from practice to equip a turbocharger with a casing which has a turbine housing and / or a compressor housing and / or a bearing housing of the turbocharger radially on the outside and axially on the outside at least in sections surrounds.
    Such formwork is not only used to provide burst protection. Such formwork can also be used for the thermal insulation of assemblies of the turbocharger.
    The casing of a turbocharger is connected to the casing of the turbocharger to be clad with several fastening devices. During operation of the turbocharger, the housing to be shuttered is subject to cyclical thermal loads, which lead to thermal deformation of the housing to be shuttered. As a result of heating, the housing to be shuttered can expand and contract as a result of cooling. As a result, forces are then entered into the casing or into the fastening devices, via which the casing is connected to the casing to be casing, which can lead to the fastening devices, the casing or the casing failing. This is a disadvantage. Furthermore, shuttering during operation of the turbocharger tends to cause undesirable vibrations.
    There is a need to improve the connection between a casing of the turbocharger to be clad and a cladding surrounding it at least in sections. Proceeding from this, the object of the invention is to create a new type of turbocharger.
    [0008] This object is achieved by a turbocharger according to claim 1. According to the invention, at least one fastening device forms a fixed bearing-like connection and at least one fastening device forms a floating bearing-like connection of the casing to the respective housing to be casing. A fastening device, which forms a fixed bearing-like connection of the casing to the respective casing to be casing, prevents a relative movement between the casing and the respective casing to be casing at the point of storage. A fastening device, which forms a floating-type connection of the casing to the respective casing to be clad, permits a relative movement between the cladding and the respective casing to be clad. Characterized in that at least one fastening device, which serves to fasten the casing to the housing to be clad, forms a fixed-type connection, and at least one fastening device, which serves to fasten the casing to the casing to be clipped, forms a floating bearing connection of the cladding to the respective casing to be clad , Forces that act on the casing, the casing and the fastening devices as a result of a cyclic-thermal load on the casing to be shuttered can be reduced. Damage to the casing, the fastening devices and the housing can thus be avoided. Vibrations of the casing are also avoided.
    According to a first development of the invention, the or the respective floating bearing connection allows a translational relative movement between the casing and the respective casing to be clad in the radial direction. According to a second development of the invention, the respective floating bearing-type connection allows a translatory relative movement between the casing and the respective casing to be clad in the axial direction. Both advantageous developments allow a defined relative movement between the housing to be clad and the cladding in order to compensate for cyclical thermal loads on the housing to be clad and thereby reduce forces introduced into the cladding or into the fastening devices.
    If the or the respective floating bearing connection allows a translational relative movement between the casing and the respective casing to be clad in the radial direction, it is preferably provided that on at least one axial wall of the casing, one fastening device each is a fixed bearing connection and one each Fastening device provides a batch-like connection. This can be particularly easy
    CH 714 944 A2 and reliably a relative movement between the casing and the casing to be clad in the radial direction is made possible.
    Then, if the or the floating bearing-type connection allows a translational relative movement between the formwork and the respective housing to be formworked in the axial direction, it is preferably provided that on an axial wall of the formwork, a fastening device a fixed-bearing type connection and on a radial wall the formwork a fastening device provides a floating bearing connection. In this way, a relative movement between the casing and the housing to be casing in the axial direction can be made possible in a simple and reliable manner.
    [0012] Preferred developments of the invention result 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 to this. It shows:
    1 shows a side view of a turbocharger according to the invention in the region of a housing of the turbocharger and a casing of the housing in the axial direction of view;
    FIG. 2 shows a cross section of a first detail from FIG. 1;
    3 shows a cross section of a second detail from FIG. 1.
    The basic structure of a turbocharger is familiar to the expert addressed here. A turbocharger thus comprises a turbine for expanding a first medium, in particular for expanding exhaust gas, and a compressor for compressing a second medium, in particular for compressing charge air, using the energy obtained in the turbine when expanding the first medium.
    [0014] The turbine has a turbine rotor and a turbine housing. The compressor has a compressor rotor and a compressor housing. The turbine rotor and the compressor rotor are coupled via a shaft which is mounted in a bearing housing of the turbocharger, the bearing housing being connected to both the turbine housing and the compressor housing.
    If, for example, the turbine rotor or the compressor rotor breaks during operation, fragments of the same can break through the respective housing, that is to say the turbine housing or the compressor housing, and get into the environment. This must be avoided, for which it is known to equip a turbocharger with a casing which surrounds the turbine housing and / or the compressor housing and / or the bearing housing of the turbocharger.
    Preferably, in the area of the turbine housing and the compressor housing, a separate casing is used, which surrounds the respective casing of the turbocharger to be clad radially on the outside and axially on the outside at least in sections.
    [0017] Such cladding not only serves to provide burst protection. Such formwork can also be used for thermal insulation and sound insulation of assemblies of the turbocharger.
    1 shows a side view of a turbocharger in the region of a turbine housing 1 and a casing 2 surrounding the turbine housing 1 at least in sections. The specific structure of the casing 2 is of no importance for the present invention.
    Fig. 1 shows a side view in the axial direction of view of the interconnected housing 1 of a turbocharger, which is at least partially surrounded by the casing 2 on the outside. The interconnected housing 1 is, in particular, the turbine housing of the turbine of a turbocharger.
    The casing 2 has axial walls 3 and radial walls 4. Thus, an axial wall 3 of the casing 2 is preferably arranged on each axial side of the casing 1 to be clad, which axially covers the respective casing 1 to be clad, at least in sections. Radially on the outside, a radial wall 4 of the casing 2 covers the respective casing 1 to be clad, at least in sections.
    The casing 2 is connected to the casing 1 to be casing via fastening devices 5, 6. In this case, at least one axial wall 3 of the casing 2 and the radial wall 4 of the casing 2 can be connected to the housing to be covered by fastening devices.
    In Fig. 1, fastening devices 5, 6 are shown, via which the visible in Fig. 1 axial wall 3 is connected to the casing 1 to be clad.
    FIG. 2 shows a cross section through the arrangement of FIG. 1 in the area of the fastening device 5. FIG. 3 shows a cross section through the arrangement of FIG. 1 in the area of the fastening device 6.
    According to the invention it is provided that at least one fastening device, which serves to fasten the casing 2 to the casing 1 to be clad, forms a fixed bearing-like connection of the cladding 2 to the casing 1 to be clad, and that at least one further fastening device connects the cladding 2 in a floating manner trained on the respective casing to be shuttered.
    CH 714 944 A2 In FIG. 1, the fastening device 5 forms a fixed bearing-like connection and the fastening device 6 forms a floating bearing-like connection of the casing 2 to the respective housing 1 to be clad. The fastening devices 5, 6 extend through the casing 2 into the casing 1 to be casing. The fastening device 5, which forms a fixed bearing-like connection of the casing 2 to the casing 1 to be clad and extends through the axial wall 3 of the casing 2 into the casing 1 to be clad, prevents local relative movement between the cladding 2 and the respective cladding casing
    1. The fastening device 6, on the other hand, which forms a floating-type connection of the casing 2 to the casing 1 to be clad and extends through the axial wall 3 of the casing 2 into the casing 1 to be clad, allows a local relative movement between the cladding 2 and the to casing 1 in a single translational direction.
    In the exemplary embodiment in FIGS. 1 to 3, the respective floating bearing-type connection in the area of the fastening device 6 permits a translational relative movement between the casing 2 and the respective casing 1 to be clad in the radial direction. It is provided in the exemplary embodiment of FIGS. 1 to 3 that on opposite axial walls 3 of the casing 2, one fastening device 5 each provides a fixed bearing-type connection and one fastening device 6 each provides a floating bearing type connection.
    1 can be seen that the fastening devices 5, 6 engaging on the axial wall 3 visible in FIG. 1 form, on the one hand, the fixed-bearing-type connection in the area of the fastening device 5 and, on the other hand, the floating-type connection in the area of the fastening device 6 an axis extending in the radial direction. The fastening device 5, which forms the fixed bearing-like connection, extends without play or almost through a recess in the axial wall 3 into the housing 1 to be clad. The fastening device 6, on the other hand, which forms the floating-type connection of the casing 2 to the casing 1 to be casing, extends through a recess in the respective axial wall 3 designed as an elongated hole 8 into the casing 1 to be casing and is guided in the elongated hole 8.
    The fastening devices 5, which provide fixed bearing-like connections and which are formed on opposite axial walls 3, lie on a first axis which extends in the axial direction. Free-bearing-type connections formed on opposite axial walls 3 or the fastening devices 6, which form such free-bearing-type connections, lie on a second axis which extends in the axial direction and preferably runs parallel to the first axis.
    The elongated hole 8, which is formed in the axial wall 3 and together with the fastening device 6 provides the floating bearing connection, extends in the radial direction of the housing 1 to be boarded. In the exemplary embodiment in FIG. 1, the respective floating bearing connection accordingly leaves a translational Relative movement between the casing 2 and the respective casing 1 to be clad in the radial direction.
    Alternatively, it is also possible that a respective floating bearing-type connection allows a translational relative movement between the casing 2 and the respective casing 1 to be clad in the axial direction.
    Then, when a floating bearing-like connection allows a translational relative movement between the casing 2 and the respective casing 1 to be casing in the axial direction, it is provided in particular that on an axial wall 3 of the casing 2, a fastening device which extends through the axial wall 3 of the casing 2 extends into the casing 1 to be casing, provides a fixed bearing-type connection, and that on a radial wall 4 of the casing 2 there is a fastening device which extends through the radial wall 4 of the casing 2 into the casing 1 to be casing extends, provides a floating bearing-like connection. For this purpose, an elongated hole extending in the axial direction can be formed in the region of the radial wall 4, in which the fastening device is guided.
    With the invention, in particular in the case of cyclic thermal loading of a casing 1 of a turbocharger to be clad, a defined relative movement between the casing 1 to be clad and the cladding 2 is possible. Forces that are introduced into the casing 2 via the fastening devices as a result of a cyclic thermal load on the housing 1 can be reduced. Damage to the housing 1 to be clad, the fastening devices 4 and the cladding 2 can thus be avoided. At least one fastening device forms a fixed bearing-like and at least one other fastening device forms a floating bearing connection of the casing 2 on the housing 1 in order to enable a defined relative movement between the casing 2 and the housing 1 to be casing. Furthermore, vibrations of the casing 2 are avoided.
    Reference symbol list [0033]
    turbine housing
    Formwork axial wall
    CH 714 944 A2 radial wall
    fastening device
    fastening device
    recess
    Long hole
    权利要求:
    Claims (10)
    [1]
    claims
    1. Turbocharger, with a turbine for expanding a first medium, with a compressor for compressing a second medium using energy obtained in the turbine when expanding the first medium, a turbine housing (1) of the turbine and a compressor housing of the compressor with a are connected between the same arranged bearing housings, with a casing (2) surrounding the turbine housing (1) and / or the compressor housing and / or the bearing housing radially on the outside and axially on the outside, which is connected to the respective casing (1) to be covered by several fastening devices (5, 6), characterized in that at least one fastening device (5) forms a fixed bearing-type connection and at least one fastening device (6) forms a floating bearing type connection of the casing (2) to the respective casing (1) to be casing.
    [2]
    2. Turbocharger according to claim 1, characterized in that a fastening device (5) which forms a fixed bearing-like connection of the casing (2) to the respective casing (1) to be shuttered, a relative movement between the casing (2) and the respective shuttered Housing (1) prevents a fastening device (6), which forms a loose bearing-like connection of the casing (2) to the respective casing (1) to be shuttered, a relative movement between the casing (2) and the respective casing (1) to be shuttered in allows a translational direction.
    [3]
    3. Turbocharger according to claim 1 or 2, characterized in that the or the respective floating bearing connection allows a translational relative movement between the casing (2) and the respective casing (1) to be clad in the radial direction.
    [4]
    4. Turbocharger according to claim 3, characterized in that on at least one axial wall (3) of the casing (2) a fastening device (5) provides a fixed-bearing connection and a fastening device (6) provides a floating-type connection.
    [5]
    5. Turbocharger according to claim 3, characterized in that on opposite axial walls (3) of the casing (7) each have a fastening device (5) a fixed bearing-like connection and each fastening device (6) provides a floating bearing-like connection.
    [6]
    6. Turbocharger according to one of claims 3 to 5, characterized in that a fixed bearing-like connection formed on an axial wall (3) and a floating bearing-like connection formed on the same axial wall (3) lie on an axis extending in the radial direction.
    [7]
    7. Turbocharger claim 1 or 2, characterized in that the or the respective floating bearing connection allows a translational relative movement between the casing (2) and the respective casing (1) to be clad in the axial direction.
    [8]
    8. Turbocharger according to claim 7, characterized in that on an axial wall (3) of the casing (2) a fastening device provides a fixed bearing-like connection and on a radial wall (4) of the casing (2) a fastening device provides a floating-type connection.
    [9]
    9. Turbocharger according to one of claims 1 to 8, characterized in that a fastening device (5), which forms a fixed bearing-like connection, extends without play or almost without play through a recess (7) in the respective wall of the casing.
    [10]
    10. Turbocharger according to one of claims 1 to 9, characterized in that a fastening device (6), which forms a floating bearing-like connection, extends through an elongated hole (8) in the respective wall of the casing.
    CH 714 944 A2

    CH 714 944 A2

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    同族专利:
    公开号 | 公开日
    KR20190125173A|2019-11-06|
    JP2019190460A|2019-10-31|
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    DE102018110235A1|2019-10-31|
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    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
    DE102018110235.6A|DE102018110235A1|2018-04-27|2018-04-27|turbocharger|
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