• 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:
    An intake silencer (10), comprising a cylindrical housing (12), which has opposite end walls (13, 14) and a jacket wall (15) extending between the end walls (13, 14) with one formed in the area of the jacket wall (15) Main flow inlet (16) and formed in the region of an end wall (14) main flow outlet (17), wherein a first medium as it flows through the intake silencer between the main flow inlet (16) and the main flow outlet (17) from a substantially radial inflow direction into a substantially axial outflow direction is deflected. The intake muffler (10) has an axially extending additional flow guide element (18) for a second medium, the additional flow outlet (19) in the housing (12) is positioned downstream of the flow deflection of the first medium such that the second medium, the additional flow guide element ( 18) flows through, with the first medium in the housing (12) downstream of the flow deflection of the first medium is miscible.
    公开号:CH712767A2
    申请号:CH00758/17
    申请日:2017-06-12
    公开日:2018-01-31
    发明作者:Spatz Urban；Schorer Paul；Hermann Ricardo
    申请人:Man Diesel & Turbo Se；
    IPC主号:
    专利说明:

    Description: The invention relates to an intake silencer for a compressor of an exhaust gas turbocharger and to an exhaust gas turbocharger.
    EP 2 386 761 A2 discloses different embodiments of intake silencers for a compressor of an exhaust gas turbocharger. Thus, there is disclosed a suction muffler with a cylindrical housing, wherein the housing has opposite, circular end walls and a tubular shell wall extending between these end walls. A main flow inlet for a main flow of a first medium is formed in the area of the jacket wall, wherein a main flow outlet for the main flow of this first medium is formed in the region of an end wall. In this case, the first medium undergoes a deflection from a substantially radial inflow into a substantially axial outflow as it flows through the intake silencer between the main flow inlet and the main flow outlet so as to flow into the downstream compressor in the axial direction. The first medium is to be compressed charge air.
    From EP 2 386 761 A2 it is also known to mix in the region of the intake silencer, the first medium of the main flow with a second medium of an additional flow, wherein it is the second medium of the additional flow, for example, compressor bypass air or to trade an air-fuel mixture. According to EP 2 386 761 A1, a compressor additional housing is required to guide the additional flow of the second medium, which is positioned between the intake silencer and the compressor of an exhaust gas turbocharger. In this case, the second medium of the additional flow is miscible with the first medium of the main flow upstream of the deflection of the main flow.
    From the prior art known intake muffler have a variety of disadvantages. Thus, the additional compressor housing required according to the prior art requires increased design effort, increased space requirements and increased costs.
    In another known from the prior art embodiment of a suction muffler takes place a radial introduction downstream in the intake muffler, which has a "remote" arrangement of the muffler result. This has a negative effect on the installation space and leads to further disadvantages such as cost increase, vibration excitation due to disturbed inflow etc. The type of flow guidance and mixing of the first medium with the second medium in the region of the intake muffler can in the downstream compressor, in particular the impeller of the downstream Compressor, to vibrate. This counteracts a desired stable compressor operation.
    On this basis, the present invention has the object to provide a novel intake silencer and an exhaust gas turbocharger.
    This object is achieved by an intake silencer according to claim 1. According to the invention, the intake silencer has an axially extending additional flow guide element for a second medium, whose additional flow outlet in the housing downstream of the flow deflection of the first medium is positioned such that the second medium which flows through the additional flow guide element with the first medium in the housing downstream of the flow deflection of first medium is miscible. The additional flow guide element can be flowed around by the first medium in the region of the additional flow outlet.
    The inventive intake muffler requires no additional compressor housing. This reduces the design effort, costs and space. In addition, the vibration behavior of a turbocharger mounted on a motor is not adversely affected by the use of a compressor auxiliary housing or a pipe segment with radial gas supply arranged between the compressor housing and the muffler. This overall optimized compressor operation on the engine is possible.
    According to an advantageous embodiment of the invention, the additional flow guide element for the second medium extends centrally in the direction of a longitudinal central axis of the cylindrical housing, so that a longitudinal center axis of the additional flow guide element and the longitudinal central axis of the cylindrical housing coincide. This allows a particularly compact design of the intake silencer and thus an exhaust gas turbocharger having the intake silencer. Furthermore, an angle-independent positioning of the intake silencer relative to the compressor of the exhaust gas turbocharger is possible.
    According to a further advantageous embodiment of the invention, the additional flow outlet of the additional flow guide element has a second flow cross-sectional area for second medium, wherein the intake silencer in the plane of the additional flow outlet has a free flow cross-section for the first medium having a first flow cross-sectional area, wherein the ratio of the second flow cross-sectional area to the first flow cross-sectional area between 0.02 and 0.09, preferably between 0.03 and 0.08, particularly preferably between 0.035 and 0.075. This flow cross-section ratio allows a particularly advantageous mixing of the first medium and second medium while avoiding vibration excitations of the compressor, whereby a particularly advantageous compressor operation is possible.
    The exhaust gas turbocharger according to the invention is defined in claim 8.
    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:
    1 shows a schematic cross section through an inventive intake silencer; and FIG. 2 shows a perspective cross section through an intake silencer according to the invention.
    The present invention relates to an intake silencer in particular for a compressor of an exhaust gas turbocharger and an exhaust gas turbocharger with such an intake silencer.
    Fig. 1 shows a highly schematic cross section through an inventive intake muffler 10 together with a suction muffler 10 downstream compressor 11 of an exhaust gas turbocharger.
    The compressor 11 of an exhaust gas turbocharger is used for the compression of charge air to be compressed, which is supplied to an internal combustion engine. In a turbine of the exhaust gas turbocharger, not shown, exhaust gas leaving the internal combustion engine is expanded, in which case energy obtained is used to drive the compressor 11. From the compressor 11, a compressor impeller 22 is shown.
    The intake muffler 10, which is upstream of the compressor 11, serves for the suction of charge air to be compressed and the guidance of the sucked, to be compressed charge air in the direction of the compressor eleventh
    The intake silencer 10 has a housing 12 with opposite end walls 13, 14 and a casing wall 15, the casing wall 15 extending between the two end walls 13, 14. The two end walls 13, 14 are typically circular, wherein the between the two end walls 13, 14 extending jacket wall 15 is typically designed like a tube.
    In the region of the jacket wall 15 of the housing 12 of the intake silencer 10, a main flow inlet 16 is formed for the main flow of a first medium. In the region of one of the end faces 14 of the housing 12, a main flow outlet 17 is formed for the main flow of the first medium.
    Fig. 1 illustrates with the arrow 20, the main flow of the first medium between the main flow inlet 16 and the main flow outlet 17 of the housing 12 of the intake muffler 10, wherein the first medium 20 and thus the main flow when flowing through the housing 12 of the intake muffler 10 and as it flows through the intake silencer 10 undergoes a flow deflection from a substantially radial inflow direction in a substantially axial outflow direction. For this purpose, 10 corresponding Strömungsumlenkelemente be positioned in the housing 12 of the intake muffler.
    The first medium is to be compressed in the compressor 11 charge air.
    The inventive intake muffler 10 has a same in the axial direction of the housing 12 and extending additional flow guide element 18 for a second medium. The additional flow guide element 18 for the second medium provides an additional flow outlet 19 which is positioned in the housing 12 downstream of the flow deflection of the first medium 20 such that the second medium which flows through the additional flow guide element 18 and leaves the additional flow guide element 18 in the region of the additional flow exit 19 the first medium in the housing 20 downstream of the flow deflection of the first medium of the main flow is miscible.
    The second medium is preferably compressor bypass air or an air-fuel mixture.
    The additional flow guide member 18 extends centrally in the housing 12 through the same, starting from the end wall 13 in the direction of the end wall 14, which provides the main flow outlet 17, wherein a longitudinal center axis 24 of the cylindrical housing 12 and a longitudinal central axis 25 of the additional flow guide element 18th coincide.
    The additional flow outlet 19 of the additional flow guide element 18 is parallel to the main flow outlet 17 upstream thereof in the housing 12. First medium and second medium are thus mixed downstream of the flow deflection of the first medium of the main flow and upstream of the main flow outlet 17, so that the mixture of first medium and second Medium leaves the intake muffler 10 via the main flow outlet 17.
    As already stated, the additional flow guide element 18 is flowed through by the second medium 21 of the additional flow, wherein the additional flow guide element 18 in the region of the additional flow outlet 19 from the first medium of the main flow 20 flows around.
    The additional flow outlet 19 of the additional flow guide element 18 has a flow cross-sectional area D 2 for the second medium of the additional flow 21. In the plane of the additional flow outlet 18, the intake silencer 10 for the main flow 20 of the first medium has a free flow cross section with a first flow cross-sectional area D1. It is preferably provided that the ratio between the second
    权利要求:
    Claims (10)
    [1]
    Flow cross-sectional area D2 and the first flow cross-sectional area D1 between 0.02 and 0.09, preferably between 0.03 and 0.08, particularly preferably between 0.035 and 0.075. Hereby, a particularly advantageous mixing of the two media of main flow 20 and additional flow 21 can be ensured within the intake muffler 10. The first flow cross-sectional area D1 is therefore significantly larger than the second flow cross-sectional area D2. The flow cross-sectional area D2 of the additional flow guide element 18 is preferably constant along its extent in the housing 12. The inventive intake muffler 10 makes an additional compressor housing superfluous. The intake silencer 10 can be positioned independently of angle on a compressor 11 of an exhaust gas turbocharger. As a result, the vibration behavior of a turbocharger mounted on an engine is not negatively influenced by the use of a compressor auxiliary housing or a pipe segment arranged between the compressor housing and muffler with radial gas supply. As a result, an optimized compressor operation is possible. The elimination of the compressor auxiliary housing costs and space requirements can be reduced. 10 intake silencer 11 compressor 12 housing 13 end wall 14 end wall 15 shell wall 16 main flow inlet 17 main flow outlet 18 additional flow element 19 additional flow outlet 20 main flow / first medium 21 additional flow / second medium 22 compressor impeller 24 longitudinal central axis 25 longitudinal center axis claims
    An intake silencer (10) having a cylindrical housing (12) which has opposite end walls (13, 14) and a casing wall (15) extending between the end walls (13, 14), with a casing wall (15) extending in the region of the casing wall (15 A first medium flows through the intake silencer between the main flow inlet (16) and the main flow outlet (17) from a substantially radial inflow direction into one essentially axial outflow direction can be deflected, characterized by an additional flow guide element (18) for a second medium whose additional flow outlet (19) is positioned in the housing (12) downstream of the flow deflection of the first medium such that the second medium containing the additional flow guide element (18) flows through, with the first medium in the housing ( 12) is miscible downstream of the flow deflection of the first medium.
    [2]
    2. intake silencer according to claim 1, characterized in that the additional flow guide member (18) for the second medium in the housing (12) centrally in the direction of a longitudinal central axis of the cylindrical housing (12), so that a longitudinal center axis of the additional flow guide element (18) and the longitudinal central axis of the cylindrical housing (12) coincide.
    [3]
    3. intake silencer according to claim 1 or 2, characterized in that the additional flow guide element (18) in the region of the additional flow outlet (19) can be flowed around by the first medium.
    [4]
    4. intake silencer according to claim 1 to 3, characterized in that the additional flow outlet (19) of the additional flow guide element (18) has a second flow cross-sectional area (D2) for second medium, and that the intake silencer in the plane of the additional flow outlet (18) has a free flow cross section for the first medium having a first flow cross-sectional area (D1), wherein the ratio of the second flow cross-sectional area (D2) to the first flow cross-sectional area (D1) is between 0.02 and 0.09.
    [5]
    5. intake silencer according to claim 4, characterized in that the ratio of the second flow cross-sectional area (D2) to the first flow cross-sectional area (D1) is between 0.03 and 0.08.
    [6]
    6. intake silencer according to claim 4, characterized in that the ratio of the second flow cross-sectional area (D2) to the first flow cross-sectional area (D1) is between 0.035 and 0.075.
    [7]
    7. intake silencer according to claim 1 to 6, characterized in that the additional flow outlet (19) parallel to the main flow outlet (17) upstream thereof in the housing (12).
    [8]
    8. Exhaust gas turbocharger, with a compressor for compressing charge air and with a turbine for expanding exhaust gas, wherein when relaxing the exhaust gas in the turbine obtained energy for compressing the charge air in the region of the compressor is available, and with an intake silencer for the charge air to be compressed , over which the charge air to be compressed upstream of the compressor can be guided, characterized in that the intake silencer is designed according to one of claims 1 to 7.
    [9]
    9. Exhaust gas turbocharger according to claim 8, characterized in that between the main flow inlet (16) and the main flow outlet (17) flowing first medium to be compressed charge air.
    [10]
    10. The exhaust gas turbocharger according to claim 8 or 9, characterized in that via the additional flow guide element (18) flowing second medium compressor bypass air or an air-fuel mixture.
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    同族专利:
    公开号 | 公开日
    KR20180009696A|2018-01-29|
    CH712767B1|2021-04-30|
    DE102016213182A1|2018-01-25|
    CN107630772A|2018-01-26|
    JP2018025191A|2018-02-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CH586351A5|1975-06-18|1977-03-31|Bbc Brown Boveri & Cie|
    DE102010028975A1|2010-05-14|2012-03-29|Abb Turbo Systems Ag|Additional compressor housing|
    JP6071813B2|2013-09-06|2017-02-01|三菱重工業株式会社|Supercharger|
    JP6223859B2|2014-02-24|2017-11-01|三菱重工業株式会社|Supercharger and motor cooling method|
    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
    DE102016213182.6A|DE102016213182A1|2016-07-19|2016-07-19|intake silencer|
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