• 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, comprising a turbine, with a compressor, wherein a turbine housing and a compressor housing are each connected to a bearing housing (9) arranged therebetween, wherein an inlet housing (11) of the turbine housing and the bearing housing (9) via a fastening device (17) are connected, that the fastening means (17) on a flange (18) of the Zuströmgehäuses (11) with a first portion (19) is mounted and with a second portion (21) a flange (26) of the bearing housing (9) at least partially covered in that between the flange (18) of the inflow housing (11) and the flange (26) of the bearing housing (9) flanges (24, 25) of a nozzle ring (15) and a sealing cover (16) are clamped such that between the flange ( 18) of the inflow housing (11) and the flange (24) of the nozzle ring (15) has a first contact clamping area (27) between the flange (24) of the nozzle ring (15) and the flange (25) of the sealing cover (1 6) a second contact clamping region (28) and between the flange (25) of the sealing cover (16) and the flange (26) of the bearing housing (9) a third contact clamping region (29) are formed. Adjacent, contacting surfaces in the region of the first contact clamping region (27) and / or in the region of the second contact clamping region (28) and / or in the region of the third contact clamping region (29) are hardened.
    公开号:CH714154A2
    申请号:CH00960/18
    申请日:2018-08-06
    公开日:2019-03-15
    发明作者:Bartholomä Klaus；Uhlenbrock Santiago；Klima Jiri；Weisbrod Tobias；Haag Jan-Christoph
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    Description [0001] The invention relates to a turbocharger.
    From DE 10 2013 002 605 A1, the basic structure of a turbocharger is known. A turbocharger has a turbine in which a first medium is expanded. Further, a turbocharger has a compressor in which a second medium is compressed, using the energy obtained in the turbine in the relaxation of the first medium. The turbine of the turbocharger has a turbine housing and a turbine rotor. The compressor of the turbocharger has a compressor housing and a compressor rotor. Between the turbine housing of the turbine and the compressor housing of the compressor, a bearing housing is positioned, wherein the bearing housing is connected on the one hand to the turbine housing and on the other hand to the compressor housing. In the bearing housing, a shaft is mounted, via which the turbine rotor is coupled to the compressor rotor.
    From practice, it is known that the turbine housing of the turbine, namely a so-called Zuströmgehäu-se, and the bearing housing are connected to each other via a preferably designed as a clamping claw fastening means. Such designed as a clamping claw fastening device is mounted with a first portion thereof on a flange of the turbine housing via fastening means and covered with a second portion of a flange of the bearing housing at least in sections. About such a fastening device of the association or composite of bearing housing and turbine housing is clamped, namely under terminals a sealing cover and nozzle ring between the turbine housing and bearing housing.
    The turbine housing is filled with the first medium to be relaxed, in particular with relaxing exhaust gas. The inlet housing of the turbine housing directs the exhaust gas toward the turbine rotor, in the inflow housing there is an overpressure relative to the environment, which is degraded in the turbine to recover energy during the expansion of the first medium. In the region of the junction of turbine housing or inlet housing and bearing housing may lead to leakage, so that the first, to be relaxed in the turbine medium can get over the connection area between the turbine housing and bearing housing in the environment. This is a disadvantage.
    To counteract such leakage of relaxing in the turbine first medium, the tension between the turbine housing or Zuströmgehäuse and bearing housing is increased in practice, especially on higher tightening torques for the fastening means, via which preferably designed as a clamping claw fastening means on the turbine housing is mounted. This increases a clamping force between the fastening device and the bearing housing. Furthermore, a clamping force between the bearing housing and the sealing cover, between the sealing cover and the nozzle ring and between the nozzle ring and the inlet housing increases. The above contact clamping areas between the fastening device and the bearing housing, between the bearing housing and sealing cover, between the sealing cover and the nozzle ring and between the nozzle ring and Zuströmgehäuse are due to the different thermal expansions of the modules, in particular of the bearing housing and Zuströmgehäuse, exposed relative movements. The relative movements can also be caused by vibrations or gas forces. In conjunction with a high contact pressure or a high bias voltage or a high clamping force, it may then come as a result of a so-called grave effect to wear in the contact clamping areas. As a result, leakage of the first medium to be relaxed in the turbine into the environment can then be caused; furthermore, in extreme cases, the connection between the inlet housing and the bearing housing can be released.
    On this basis, the present invention has the object to provide a novel turbocharger with less risk of wear. This object is achieved by a turbocharger according to claim 1. According to the invention, adjoining, contacting surfaces are hardened in the region of the first contact clamping region and / or in the region of the second contact clamping region and / or in the region of the third contact clamping region. As a result, wear in the area of the contact clamping areas can be reduced.
    Preferably, the abutting, contacting surfaces are in the range of at least two contact clamping areas, more preferably of all three contact clamping areas, from which the first contact clamping area and the second contact clamping area and the third contact clamping area comprise group of contact clamping areas hardened. As a result, wear in the area of the contact clamping areas can be further reduced.
    Between the second portion of the fastening device and the flange of the bearing housing, a fourth contact clamping region is formed, the adjoining, contacting surfaces are preferably also cured. In this way, wear in the area of the contact clamping areas can be further reduced. [0009] According to an advantageous development of the invention, a surface of the flange of the turbine housing in the first contact clamping area and / or a surface of the flange of the bearing housing in the third contact clamping area are hardened by coating. A surface of the flange of the nozzle ring in the first contact clamping region and / or the second contact clamping region and / or a surface of the flange of the sealing cover in the second contact clamping region and / or third contact clamping region are hardened by nitriding. This hardening of the surfaces is preferred.
    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 cross section through a turbocharger.
    2 shows a cross section through a turbocharger in the region of an inflow housing and a bearing housing of the turbocharger.
    The invention relates to a turbocharger.
    A turbocharger 1 has a turbine 2 for relaxing a first medium, in particular for the expansion of exhaust gas of an internal combustion engine. Furthermore, a turbocharger 1 has a compressor 3 for compressing a second medium, in particular charge air, using energy obtained in the turbine 2 during the expansion of the first medium.
    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 mounted in a bearing housing 9 is, wherein the bearing housing 9 is positioned between the turbine housing 4 and the compressor housing 5 and connected to both the turbine housing 4 and the compressor housing 5.
    The turbine housing 4 of the turbine 2 comprises a Zuströmgehäuse 11 and a discharge housing 12. About the Zuströmgehäuse 11 which can be supplied to the turbine rotor 5 in the region of the turbine 2 to relaxing first medium. About the outflow housing 12 flows in the region of the turbine rotor 5 relaxed first medium away from the turbine 2.
    The turbine housing 4 comprises in addition to the Zuströmgehäuse 11 and the outflow housing 12 an insert 13, wherein the insert 13 extends in particular in the region of the Zuströmgehäuses 11, adjacent to the turbine rotor 5 radially outwardly adjacent to blades 14 of the turbine rotor. 5
    The turbine housing 4 further comprises a nozzle ring 15. The nozzle ring 15 is also referred to as Turbinenleitapparat.
    Furthermore, Fig. 1 in the connection region of Zuströmgehäuse 11 and bearing housing 9 a sealing cover 16. The sealing cover 16 is also referred to as a bearing housing cover or heat shield.
    The Zuströmgehäuse 11 of the turbine 2 is connected to the bearing housing 2 via a fastening device 17 such that the fastening device 17 is mounted on a flange 18 of the Zuströmgehäuses 11 with a first portion 19, via a plurality of fastening means 20, and that the Fastening device 17 with a second portion 21, a flange 26 of the bearing housing 9 at least partially covered. The fastening device 17 is also referred to as a clamping claw. The fastening device 17 can be segmented viewed in the circumferential direction.
    Each fastening means 20 comprises a screwed into the flange 18 of the Zuströmäusäuses 11 screw 22 and an attacking at the other end of the threaded screw nut 22 22, wherein by tightening the nuts 23 a defined biasing force on the fastening device 17 on the Zuströmgehäuse 11 and the bearing housing 9 can be applied. Here, corresponding flanges 24, 25 of the nozzle ring 15 and sealing cover 16 between Zuströmgehäuse 11 and bearing housing 9 are clamped.
    In the above manner, a plurality of contact clamping portions are formed in the connecting portion between the Zuströmgehäuse 11 of the turbine 2 and the bearing housing 9, namely between the flange 18 of the Zuströmgehäuses 11 and the flange 24 of the nozzle ring 15, a first contact clamping region 27, between the flange 24 of the nozzle ring 15 and the flange 25 of the sealing cover 16, a second contact clamping region 28, between the flange 25 of the sealing cover 16 and the flange 26 of the bearing housing 9, a third contact clamping region 29 and between the flange 26 of the bearing housing 9 and the second portion 21 of the fastening device 17th a fourth contact clamping area 30.
    For the purposes of the present invention, adjoining, contacting surfaces are hardened in the region of the first contact clamping region 27 and / or in the region of the second contact clamping region 28 and / or in the region of the third contact clamping region 29.
    Preferably, the adjoining, contacting surfaces in the region of at least two contact clamping regions, particularly preferably in the region of all three contact clamping regions, from the first contact clamping region 27 and the second contact clamping region 28 and the third contact clamping region 29 comprising group of contact clamping areas hardened.
    In an advantageous embodiment of the invention can be provided that also adjacent, contacting surfaces are hardened in the region of the fourth contact clamping region 30.
    The curing of the adjoining surfaces is preferably such that the surface hardness of the respective surfaces is at least 40 HRC.
    In a preferred embodiment of the invention it is provided that a surface of the flange 18 of the inflow housing 11 of the turbine 2 is hardened in the first contact clamping region 27 by coating, preferably via a cobalt-chromium coating by spraying onto the flange 18 of the Influx housing 11 is applied. The surface of the flange 24 of the nozzle ring 15 is hardened in the first contact clamping region 27 and in the second contact clamping region 28 in each case by nitriding, preferably by gas nitriding. The surface of the flange 25 of the sealing cover 16 is preferably also hardened by nitriding in the region of the second contact clamping region 28 and the third contact clamping region 29, in particular by salt bath nitration. The surface of the flange 26 of the bearing housing 9 in the third contact clamping region 29 is hardened by a coating, preferably by a cobalt-chromium coating, which is applied by spraying onto the flange 26 of the bearing housing 9 in the third contact clamping region 29. The surface of the flange 26 of the bearing housing 9 in the fourth contact clamping region 29 is preferably also made by such a cobalt-chromium coating, wherein the surface of the second portion 21 of the fastening device 17 in the fourth contact clamping region 30 is preferably hardened by nitriding. Although this hardening of the surfaces in the contact clamping areas is preferred, the surfaces can also be hardened by other hardening methods.
    With the invention, the wear of the above contact clamping regions 27, 28, 29 and 30 can be reduced. As a result, the connection of Zuströmgehäuse 11 of the turbine 2 and bearing housing 9 is subject to a lower overall wear. The risk of accidental release of this compound and the risk of exhaust leakage into the environment can be reduced.
    REFERENCE SIGNS LIST 1 Turbocharger 2 Turbine 3 Compressor 4 Turbine housing 5 Turbine rotor 6 Compressor housing 7 Compressor rotor 8 Shaft 9 Bearing housing 10 Silencer 11 Inflow housing 12 Outflow housing 13 Insert 14 Blade 15 Nozzle ring 16 Sealing cover 17 Fastening device 18 Flange 19 Section 20 Fasteners 21 Screw
    权利要求:
    Claims (14)
    [1]
    claims
    A turbocharger (1) having a turbine (2) for expanding a first medium, the turbine (2) comprising a turbine housing (4) and a turbine rotor (5) with a compressor (3) for compressing a second medium Use of energy obtained in the turbine (2) upon relaxation of the first medium, the compressor (3) having a compressor housing (6) and a compressor rotor (7) coupled to the turbine rotor (5) via a shaft (8), the Turbine housing (4) and the compressor housing (6) each having a bearing housing (9) arranged between them, in which the shaft (8) is mounted, wherein a Zuströmgehäuse (11) of the turbine housing (4) and the bearing housing (9 ) are connected via a fastening device (17) such that the fastening device (17) is mounted on a flange (18) of the inflow housing (11) with a first section (19) and with a second section (21) has a flange (26). of the camp Housing (9) at least partially covered, wherein between the flange (18) of the Zuströmgehäuse (11) and the flange (26) of the bearing housing (9) flanges (24, 25) of a nozzle ring (15) and a sealing cover (16) clamped in such a way in that between the flange (18) of the inflow housing (11) and the flange (24) of the nozzle ring (15) there is a first contact clamping area (27) between the flange (24) of the nozzle ring (15) and the flange (25) of the Sealing cover (16) a second contact clamping region (28) and between the flange (25) of the sealing cover (16) and the flange (26) of the bearing housing (9) a third contact clamping region (29) are formed, characterized in that adjacent to each other contacting surfaces in the region of the first contact clamping region (27) and / or in the region of the second contact clamping region (28) and / or in the region of the third contact clamping region (29) are hardened.
    [2]
    2. Turbocharger according to claim 1, characterized in that the adjoining, contacting surfaces in the range of at least two contact clamping regions of the first contact clamping region (27) and the second contact clamping region (28) and the third contact clamping region (29) comprise group of contact clamping regions are cured.
    [3]
    3. Turbocharger according to claim 1 or 2, characterized in that the adjoining, contacting surfaces in the region of all three contact clamping regions of the first contact clamping region (27) and the second contact clamping region (28) and the third contact clamping region (29) comprise group of contact clamping regions are cured.
    [4]
    4. turbocharger according to one of claims 1 to 3, characterized in that a surface of the flange (18) of the Zuströmgehäuses (11) in the first contact clamping region (27) is hardened by coating.
    [5]
    5. Turbocharger according to claim 4, characterized in that the surface of the flange (18) of the inflow housing (11) is hardened in the first contact clamping area by a cobalt-chromium coating.
    [6]
    6. Turbocharger according to one of claims 1 to 5, characterized in that a surface of the flange (24) of the nozzle ring (15) in the first contact clamping region (27) and / or second contact clamping region (28) is hardened by nitriding.
    [7]
    7. turbocharger according to claim 6, characterized in that the surface of the flange (24) of the nozzle ring (15) in the first and / or second contact clamping region (28) is cured by a gas nitriding.
    [8]
    8. Turbocharger according to one of claims 1 to 7, characterized in that a surface of the flange (25) of the sealing cover (16) in the second contact clamping region (28) and / or third contact clamping region (29) is hardened by nitriding.
    [9]
    9. turbocharger according to claim 8, characterized in that the surface of the flange (25) of the sealing cover (16) in the second and / or third contact clamping region (29) is hardened by a Salzbadnitrierung.
    [10]
    10. turbocharger according to one of claims 1 to 9, characterized in that a surface of the flange (26) of the bearing housing (9) in the third contact clamping region (29) is hardened by coating.
    [11]
    11. A turbocharger according to claim 10, characterized in that the surface of the flange (26) of the bearing housing (9) in the third contact clamping region (29) is hardened by a cobalt-chromium coating.
    [12]
    12. Turbocharger according to one of claims 1 to 11, characterized in that between the second portion (21) of the fastening means (17) and the flange (26) of the bearing housing (9), a fourth contact clamping region (30) is formed, the adjacent thereto , contacting surfaces are cured.
    [13]
    13. Turbocharger according to claim 12, characterized in that a surface of the flange (26) of the bearing housing (9) in the fourth contact clamping region (30) by coating preferably with a cobalt-chromium coating and a surface of the second portion (21) of the fastening device (17) cured by nitriding.
    [14]
    14. Turbocharger according to one of claims 1 to 13, characterized in that the surface hardness in the region of the hardened surfaces is at least 40 HRC.
    类似技术:
    公开号 | 公开日 | 专利标题
    CH712978A2|2018-03-29|Turbocharger.
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    DE102016125189B4|2020-11-26|turbocharger
    DE102005046679A1|2006-04-20|Assembly device for air separator and gas turbine has intermediate cavity formed by air separator, connected to aperture for outer circumference of rotor
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    CH713774A2|2018-11-15|Turbocharger.
    EP3181827A1|2017-06-21|Turbo-machine component connection
    DE102007015669A1|2008-10-02|turbomachinery
    CH714155A2|2019-03-15|Turbocharger.
    CH714390A2|2019-05-31|Turbine and turbocharger.
    EP3548705A1|2019-10-09|Turbocharger
    DE2922554A1|1980-02-07|DEVICE FOR FASTENING A SEALING COVERING ON A VANE BLADE OF A TURBO MACHINE
    EP2054630A1|2009-05-06|Attaching a filter muffler
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    CH709982A2|2016-02-15|Shaft seal system and turbocharger.
    WO2017102040A1|2017-06-22|Valve device for a turbine of a turbocharger
    CH714152A2|2019-03-15|Turbocharger.
    DE2741730A1|1979-04-19|SEAL OF WET CYLINDER LINERS IN THE CRANKCASE OF COMBUSTION ENGINE
    DE102013205031A1|2014-09-25|Sealing element for sealing a gap
    DE102013017713A1|2015-04-30|turbomachinery
    DE102016012658A1|2018-04-26|Rotor for a turbomachine, in particular of a motor vehicle
    DE102018120894A1|2020-02-27|turbomachinery
    DE102017127588A1|2019-05-23|Connecting device for an exhaust gas turbocharger and turbocharger
    同族专利:
    公开号 | 公开日
    KR20190026598A|2019-03-13|
    CN109424378A|2019-03-05|
    US20190072002A1|2019-03-07|
    US10746053B2|2020-08-18|
    JP2019044772A|2019-03-22|
    DE102017215539A1|2019-03-07|
    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
    DE102017215539.6A|DE102017215539A1|2017-09-05|2017-09-05|turbocharger|
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