• 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:
    Radial compressor (10), with a compressor rotor having rotating blades and with a compressor housing (11) accommodating an insert (12) and a diffuser (13), the insert (12) having a flow channel leading to the rotating blades of the rotor and the diffuser (13) a flow channel leading away from the rotor blades is delimited at least in sections, and the diffuser (13) is designed as a blade-free diffuser and as an integral part of the insert piece (12), so that the insert piece (12) and the diffuser (13) form an integral unit form.
    公开号:CH713304B1
    申请号:CH01333/17
    申请日:2017-11-06
    公开日:2021-09-15
    发明作者:Weisbrod Tobias；Denkel Harald；Glathe Matthias
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    The invention relates to a radial compressor and a turbocharger.
    Turbochargers have a compressor and a turbine. A first medium is expanded in the turbine of a turbocharger, with the energy gained in the process being used in the compressor of the turbocharger to compress a second medium. The present invention relates to a radial compressor of a turbocharger and a turbocharger with a radial compressor.
    A radial compressor of a turbocharger has a compressor housing and a compressor rotor. The compressor rotor of the centrifugal compressor is axially flown against and radially discharged, the compressor rotor carrying rotor blades. The compressor housing accommodates an insert and a diffuser, the insert at least partially delimiting a flow channel leading to the rotor blades of the rotor and the diffuser delimiting a flow channel of the radial compressor leading away from the rotor blades.
    From EP 1340920B1 a radial compressor with a diffuser is known, the diffuser of the radial compressor disclosed there having guide vanes.
    Proceeding from this, the present invention is based on the object of creating a novel radial compressor and a turbocharger with such a radial compressor.
    This object is achieved by a radial compressor according to claim 1.
    According to the invention, the diffuser is designed as a vaneless diffuser and as an integral part of the insert.
    In the radial compressor according to the invention, the diffuser is designed as a vaneless diffuser. This vaneless diffuser is an integral part of the insert. A vane-less diffuser can be used to set a different, advantageous compressor map compared to a bladed diffuser. By designing such a vane-less diffuser as an integral part of the insert, no separate attachment of the diffuser to the compressor housing is required; rather, the integral unit of diffuser and insert can be easily and reliably mounted on the compressor housing. A previously existing gap between the insert and the diffuser can be eliminated, which can have a positive effect on the flow guidance.
    According to an advantageous development, the integral unit of the diffuser and the insert is attached to the compressor housing. The integral unit comprising the diffuser and the insert is preferably screwed to the compressor housing via a retaining ring. The fastening of the integral unit of diffuser and insert via a retaining ring screwed to the compressor housing is particularly preferred because it is structurally simple and reliable.
    The turbocharger according to the invention is defined in claim 7.
    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 an axial section through a radial compressor.
    The invention relates to a radial compressor and a turbocharger with a radial compressor.
    The basic structure of a turbocharger is familiar to the person skilled in the art addressed here. It should be noted at this point that a turbocharger has a compressor and a turbine. A first medium, in particular exhaust gas, is expanded in the turbine of the turbocharger and energy is obtained in the process. The energy gained during the expansion of the first medium of the turbine is used in the compressor of the turbocharger in order to compress a second medium, in particular charge air.
    The present invention relates to such a turbocharger and a radial compressor for such a turbocharger, wherein the medium to be compressed flows against a radial compressor in the axial direction and the compressed medium flows out in the radial direction.
    The turbine of a turbocharger has a turbine rotor and a turbine housing. The compressor, namely the radial compressor 10, has a compressor housing 11 and a compressor rotor which is coupled to the turbine rotor via a shaft. The shaft is mounted in a bearing housing 22 which is connected on the one hand to the turbine housing of the turbine and on the other hand to the compressor housing 11 of the radial compressor 10.
    Fig. 1 shows a schematic cross section through stator-side assemblies of a radial compressor 10, in particular Fig. 1 shows a compressor housing 11 of the radial compressor 10 as well as assemblies received in the compressor housing 11 of the radial compressor 10, for example an insert 12, a diffuser 13 and a sealing cover 14. The compressor rotor with its Blade is not shown in FIG. 1.
    The insert 12 delimits a flow channel leading to the rotor blades of the rotor, not shown, and the diffuser 13 delimits a flow channel leading away from the rotor blades of the rotor, not shown, in each case at least in sections.
    In the radial compressor 10 according to the invention, the diffuser 13 is designed as a blade-free diffuser and designed as an integral part of the insert 12. Diffuser 13 and insert 12 accordingly form a monolithic, one-piece assembly.
    The integral unit or monolithic assembly of the diffuser 13 and the insert 12 is attached to the compressor housing 11, in particular the integral unit or monolithic assembly of the diffuser 13 and the insert 12 is screwed to the compressor housing 11, preferably via a retaining ring 15.
    The screwing of the monolithic unit or the one-piece assembly of retaining ring 12 and diffuser 13 on the compressor housing 11 is carried out such that the retaining ring 15 via first screws 16 with the compressor housing 11, namely a flange 18 of the same, and via second screws 17 with the integral unit of diffuser 13 and insert 12, namely with a flange 19 of this integral unit, is individually screwed.
    Fig. 1 can be seen that the retaining ring 15 on a flow inlet-side section of the compressor housing 11 or. of the integral unit of insert 12 and diffuser 13 is positioned so that the flange 19, via which the insert 15 is fastened to the integral unit with the screws 17, is associated with the insert 12.
    According to FIG. 1, a stop 20 is formed in the area of the diffuser 13, which comes to rest against a corresponding stop 21 of the compressor housing 11 and is used to center the integral or monolithic unit of diffuser 13 and insert 12 in the compressor housing 11.
    In the radial compressor 10 according to the invention, the diffuser 13 is therefore without blades and an integral part of the insert 12. Because the diffuser 13 is designed without blades, it has no contact with the bearing housing 22 and cannot be clamped or mounted on the bearing housing 22. In order to dispense with an individual screw connection of the diffuser 13 to the compressor housing 11, the blade-free diffuser 13 is an integral part of the insert 12. The diffuser 13 is mounted together with the insert 12 on the compressor housing 11, namely screwed. Disadvantageous gaps and steps in a transition area between insert 12 and diffuser 13 that exist in practice are eliminated, whereby the flow guidance of the compressor 10 is improved, whereby the flow can ultimately be stabilized and the effectiveness of the centrifugal compressor 10 can be increased.
    List of reference symbols
    10 radial compressor 11 stator 12 insert 13 diffuser 14 sealing cover 15 retaining ring 16 fastening screw 17 fastening screw 18 flange 19 flange 20 stop 21 stop 22 bearing housing
    权利要求:
    Claims (7)
    [1]
    1. Radial compressor (10), witha bladed compressor rotor;a compressor housing (11) accommodating an insert piece (12) and a diffuser (13), the insert piece (12) delimiting a flow channel leading to the rotor blades of the rotor and the diffuser (13) delimiting a flow channel leading away from the rotor blades of the rotor at least in sections; characterized in thatthe diffuser (13) is designed as a vaneless diffuser and as an integral part of the insert (12), so that the insert (12) and the diffuser (13) form an integral unit. set cloth (12) and the diffuser (13) form an integral unit.
    [2]
    Radial compressor according to claim 1, characterized in that the integral unit comprising the diffuser (13) and the insert (12) is attached to the compressor housing (1).
    [3]
    3. Radial compressor according to claim 1 or 2, characterized in that the integral unit comprising the diffuser (13) and the insert (12) is connected to the compressor housing (11) via a retaining ring (15).
    [4]
    4. Radial compressor according to claim 3, characterized in that the retaining ring (15) is connected on the flow inlet side to a flange (19) of the integral unit comprising diffuser (13) and insert (12) and to a flange (18) of the compressor housing (11).
    [5]
    5. Radial compressor according to claim 3 or 4, characterized in that the retaining ring (15) is screwed to the integral unit of diffuser (13) and insert (12) and to the compressor housing (11).
    [6]
    6. Radial compressor according to claim 5, characterized in that the retaining ring (15) with the integral unit of diffuser (13) and insert piece (12) via first screws (16) and with the compressor housing (11) via second screws (17) in each case individually is screwed.
    [7]
    7. turbocharger,with a turbine for the expansion of a first medium,with a compressor designed as a radial compressor (10) for compressing a second medium using energy gained in the turbine when the first medium is expanded,wherein the turbine has a turbine housing and a turbine rotor,wherein the radial compressor (10) has a compressor housing (11) and a compressor rotor coupled to the turbine rotor via a shaft,wherein the turbine housing and the compressor housing (11) are each connected to a bearing housing (22) arranged between them and in which the shaft is mounted,characterized in thatthe radial compressor (10) is designed according to one of claims 1 to 6.
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    同族专利:
    公开号 | 公开日
    DE102016125143A1|2018-06-21|
    US20180172021A1|2018-06-21|
    KR20180072526A|2018-06-29|
    JP2018100660A|2018-06-28|
    CH713304A2|2018-06-29|
    US10598188B2|2020-03-24|
    CN108223453A|2018-06-29|
    引用文献:
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    法律状态:
    2018-07-31| PFA| Name/firm changed|Owner name: MAN ENERGY SOLUTIONS SE, DE Free format text: FORMER OWNER: MAN DIESEL AND TURBO SE, DE |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102016125143.7A|DE102016125143A1|2016-12-21|2016-12-21|Centrifugal compressor and turbocharger|
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