• 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 , Between the first portion (19) of the fastener (17) and nuts (23) of the fasteners (20), resiliently deformable elements (27) are positioned which provide a biasing force and compensate for preload losses.
    公开号:CH714155A2
    申请号:CH00967/18
    申请日:2018-08-07
    公开日:2019-03-15
    发明作者:Weisbrod Tobias；Hossbach Björn
    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 Zuströmgehäuse, and the bearing housing are connected to each other via a preferably designed as a clamping claw fastening device. 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 inlet 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.
    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. Despite increased torques, leakage may not be prevented.
    Proceeding from this, the present invention seeks to provide a novel turbocharger with improved connection of Zuströmgehäuse and bearing housing.
    This object is achieved according to a first aspect of the invention by a turbocharger according to claim 1. Thereafter, resiliently deformable elements are positioned between the first portion of the fastener and nuts of the fastener, which provide a biasing force.
    According to a second aspect of the invention, the object is achieved by a turbocharger according to claim 4. Thereafter, the fastening device is resiliently deformable as such and provides a biasing force.
    According to a third aspect of the invention, the object is achieved by a turbocharger according to claim 9. Thereafter, a resiliently deformable element is positioned between the second portion of the fastening device and the flange of the bearing housing, which provides a biasing force.
    With all three aspects of the present invention, it is possible to improve the connection between Zuströmgehäuse and bearing housing. The risk of unwanted leakage of the first medium to be relaxed into the environment can be minimized.
    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 according to a first aspect of the invention in the region of an inflow housing and a bearing housing of the turbocharger,
    3 shows a detail of FIG. 2,
    4 shows a cross section through a turbocharger according to a second aspect of the invention in the region of an inflow housing and a bearing housing of the turbocharger,
    5 shows a cross section through a further turbocharger according to the second aspect of the invention in the region of an inflow housing and a bearing housing of the turbocharger,
    6 shows an alternative for FIGS. 4 and 5,
    7 shows a cross section through a further turbocharger according to the second aspect of the invention in the region of an inflow housing and a bearing housing of the turbocharger,
    8 shows a cross section through a turbocharger according to a third aspect of the invention in the region of an inflow housing and a bearing housing of the turbocharger,
    9 shows a detail of FIG. 8.
    The invention relates to a turbocharger.
    Fig. 1 shows the basic structure of a turbocharger 1. A turbocharger 1 has a turbine 2 for relaxing a first medium, in particular for the relaxation 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 Abströmgehäuse 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 9 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 threaded 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 turbocharger of Figs. 2 and 3 according to the first aspect of the invention are formed between the first portion 19 formed as a clamping claw fastening means 17 and the nuts 23 of the fastening means 20 elastically deformable elements 27 which are clamped by the tightening force of the nuts and provide a biasing force.
    In this case, in the turbocharger of Fig. 2 and 3 between the nut 23 of each fastener 20 and the first portion 19 of the fastening device 17 each formed a plurality of plate springs, resiliently deformable elements 27 stacked one above the other or stacked next to each other, said plate springs 27 in pocket-like recesses 28 of the fastening device 17 engage.
    The number and orientation of the stacked summarized, resiliently deformable elements 27, namely the disc springs, on the one hand determines the biasing force and on the other hand, a spring in the connection of the bearing housing 9 and Zuströmgehäuse 11 of the turbine, the disc springs all arranged in the same direction or partially alternating could be. Then, when all disc springs are arranged in the same direction to a corresponding stack, a high biasing force can be provided with a small spring travel. By changeable arrangement of the plate springs, a smaller preload force is provided with a larger spring travel.
    Accordingly, according to the first aspect of the invention between each nut 23 of each fastening means 20 and the fastening means 17 in the embodiment of FIGS. 2, 3 are Belleville springs or resiliently deformable
    Washers positioned, which generate a biasing force in the region of each nut 23, even if due to thermal cycles, the modules to be interconnected undergo a different extent. As already stated, can be adjusted by the arrangement of the plate springs spring force and travel. The disc springs can be arranged alternately and in the same direction. By tightening the nuts 23, the disc spring assemblies are biased. Due to thermal loads, different thermal expansions of the interconnected modules can be compensated.
    According to a second aspect of the invention, the fastening device 17, so the clamping claw, as such resiliently deformable and provides a corresponding biasing force, by means of which caused by thermal loads, different thermal expansions of the interconnected assemblies can be compensated.
    Fig. 4 shows an embodiment of the turbocharger according to the second aspect of the invention, according to which the fastening device 17 is contoured in cross-section U-shaped. A first leg 29 of the U-shaped contoured fastening device 17 in this case provides the first portion 19, with which the fastening means 17 rests against the flange 18 of the Zuströmgehäuses 11, and the second portion 21, with which the fastening means 17, the flange 26 of the bearing housing. 9 partially covered, ready. A second leg 30 of the U-shaped contoured fastening device 17 extends parallel to this first leg 29 and is connected via a connecting portion 31 with this first leg 29, wherein on the second leg 30, the nut 23 of the respective fastening means 20 is supported.
    By tightening the respective nut 23, the second leg 30 is resiliently deformed and deformed in the direction of the first leg 29. In this way, a biasing force can be provided, which can compensate or compensate for thermal induced deformations of the interconnected assemblies.
    In the embodiment of FIG. 5 or FIG. 6, the fastening device 17 is contoured C-shaped or V-shaped. The C-shaped or V-shaped contoured fastening device 17 of the embodiment of FIG. 5 also has two legs, which are interconnected via a connecting portion 34. A free end 32 of the first leg is located on the flange 18 of the Zuströmgehäuses 11 and a free end of the second leg 33 is located on the flange 6 of the bearing housing 9 at. The nut 23 of the fastening means 20 shown in Fig. 5 is supported on the connecting portion 34 of the cross-sectionally C-shaped or V-shaped contoured fastening device 17 from. Then, when the nut 23 is tightened, the connecting portion 34 is elastically deformed and the entire fastener 17 is pressed against the flanges 18, 26. By means of the resilient deformation of the fastening device 17, a biasing force for connecting bearing housings 9 and inlet housings 11 can be provided which have different dimensions, e.g. thermally induced expansions, these interconnected assemblies and other bias losses can compensate in the connection.
    Fig. 7 shows a further embodiment of a turbocharger according to the invention according to the second aspect of the invention, according to which the fastening means 17, which is resiliently deformable as such, is contoured in a spiral shape. In this case, the spirally contoured fastening device 17 has a first end 35 with which the fastening device 17 is mounted on the flange 18 of the inflow housing 11 via fastening means 20. An opposite end 36 of the helically contoured in cross-section fastening device 17 covers at least partially the flange 26 of the bearing housing 9 and is applied to the same.
    The nut 23 of the fastener 20 is supported at the first end 35 of the helically contoured fastening device 17 from. Arrows 37 visualize in FIG. 7 a force flow which, when the nut 23 is tightened, extends from the nut into the fastening device 17 and, via the fastening device 17, into the flanges 18, 26 of the inlet housing 11 and bearing housing 9. About a recess 38 in the helical contoured in cross-section fastening device 17, the nut 23 is accessible by means of a tool.
    In the embodiments of FIGS. 4 to 7 according to the second aspect of the present invention, therefore, the fastening device 17 is formed as such resiliently deformable. In this case, the fastening device 17 may be U-shaped, V-shaped, C-shaped or spirally contoured. By tightening the nuts 23, the respective fastening means 17 are biased.
    A turbocharger according to a third aspect of the invention illustrate Fig. 8 and 9. According to the third aspect, a resiliently deformable element 39 is positioned between the second portion 21 of the fastening device 17 and the flange 26 of the bearing housing 9, which on the one hand on the second Section 21 of the clamping device formed as a fastening device 17 and on the other hand on the flange 26 of the bearing housing 9 is supported.
    This elastically deformable element 39 preferably has a cross-sectionally C-shaped ring member 40 in which a coil spring 41 is received or positioned. By tightening the nut 23 of the fastener 20 shown in Fig. 8, the member 39 is elastically deformed to provide a biasing force therefrom. Also with this embodiment of the invention, different deformations of bearing housing 9 and Zuströmgehäuse 11 and bias losses of the connection can be compensated during operation to reduce the risk of leakage and to ensure a secure connection between Zuströmgehäuse 11 and bearing housing 9 even at high temperature cycles.
    In all variants of the present invention, it is possible that the clamping claw or the fastening device 17 is segmented in the circumferential direction, that is composed of several segments seen in the circumferential direction.
    REFERENCE NUMBERS: 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 22 Nut 23 Section 24 flange 25 flange 26 flange 27 resiliently deformable element 28 recess 29 leg 30 leg 31 connecting portion 32 end
    权利要求:
    Claims (11)
    [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) in such a way that the fastening device (17) is mounted via fastening means (20) on a flange (18) of the inflow housing (11) with a first section (19) and with a second section (21 ) a flange (26) of the bearing housing (9) at least partially covered, characterized in that between the first portion (19) of the fastening means (17) and nuts (23) of the fastening means (20) are resiliently deformable elements (27) are positioned, which provide a biasing force and compensate for bias losses.
    [2]
    2. Turbocharger according to claim 1, characterized in that between the first portion (19) of the fastening device (17) and the nuts (23) of the fastening means (20) each formed as a plurality of disc springs, elastically deformable elements (27) stacked one above the other or in a stack are positioned next to each other.
    [3]
    3. turbocharger according to claim 2, characterized in that the biasing force and a spring travel of the resiliently deformable elements (27) is determined in each case by the number and orientation of the disc springs.
    [4]
    4. turbocharger (1), with a turbine (2) for relaxing a first medium, wherein the turbine (2) a turbine housing (4) and a turbine rotor (5), with a compressor (3) for compressing a second medium below 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) in such a way that the fastening device (17) is mounted via fastening means (20) on a flange (18) of the inflow housing (11) with a first section (19) and with a second section (21 ) a flange (26) of the bearing housing (9) at least partially covered, characterized in that the fastening means (17) as such is resiliently deformable and provides a biasing force.
    [5]
    5. turbocharger according to claim 4, characterized in that the fastening means (17) is contoured in cross-section U-shaped or V-shaped or C-shaped or spirally.
    [6]
    6. A turbocharger according to claim 4 or 5, characterized in that in a U-shaped in cross-section fastening means (17) has a first leg (29) the first portion (19), with which the fastening means (17) on the flange (18). of the inflow housing (11) is mounted, and the second portion (21) with which the fastening means (17) at least partially covers the flange (26) of the bearing housing (9) provides, wherein a second leg (30) parallel to the first Leg (29) extends, and wherein the nut (23) of the respective fastening means (20) on the second leg (30) is supported.
    [7]
    7. A turbocharger according to claim 4 or 5, characterized in that in a cross-sectionally C-shaped or V-shaped contoured fastening means (17) a free end (32) of a first leg, the first portion (19), with which the fastening device ( 17) is mounted on the flange (18) of the inflow housing (11), and a free end (33) of a second leg of the second portion (21), with which the fastening means (17) the flange (26) of the bearing housing (9) at least partially covered, provides, the mother (23) of the respective fastening means (20) on a connecting the two legs portion (34) of the fastening device (17) is supported.
    [8]
    8. Turbocharger according to claim 4 or 5, characterized in that in a helically contoured in cross-section fastening means (17) has a first end (35) thereof the first portion (19), with which the fastening means (17) on the flange (18) of the A second end (36) of the same provides the second section (21) with which the fastening device (17) covers the flange (26) of the bearing housing (9) at least in sections, wherein the nut (14) 23) of the respective fastening means at the first end (35) is supported.
    [9]
    9. turbocharger (1), with a turbine (2) for relaxing a first medium, wherein the turbine (2) a turbine housing (4) and a turbine rotor (5), with a compressor (3) for compressing a second medium below 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) in such a way that the fastening device (17) is mounted via fastening means (20) on a flange (18) of the inflow housing (11) with a first section (19) and with a second section (21 ) a flange (26) of the bearing housing (9) at least partially covered, characterized in that between the second portion (21) of the fastening means (17) and the flange (26) of the bearing housing (9) a resiliently deformable element (39) positioned is, which provides a biasing force.
    [10]
    10. A turbocharger according to claim 9, characterized in that the resiliently deformable element (29) is formed as a cross-sectionally C-shaped ring member (40) in which a coil spring (41) is received.
    [11]
    11. Turbocharger according to one of claims 1 to 10, characterized in that the fastening device (17) is designed as a circumferentially segmented clamping claw.
    类似技术:
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    同族专利:
    公开号 | 公开日
    DE102017215569A1|2019-03-07|
    US20190072001A1|2019-03-07|
    KR20190026570A|2019-03-13|
    JP2019049260A|2019-03-28|
    CN109505671A|2019-03-22|
    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
    DE102017215569.8A|DE102017215569A1|2017-09-05|2017-09-05|turbocharger|
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