• 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 radial turbine (2) of a turbocharger (1) for expanding a medium, comprising a turbine inlet housing (6) and a bearing housing (7) adjoining the turbine inlet housing (6); with a rotor blades (12) having turbine rotor (11); a vane (13) having variable pitch vanes (14) positioned upstream of the blades (12) in the flow direction of the media to be purged, each vane (14) including a vane blade (15) and a vane journal (16); with an adjusting device for adjusting the guide vanes (14) of the distributor (13), wherein the adjusting device has a displaceable adjusting ring (18), wherein the adjusting ring (18) with the guide blade pins (16) of the guide vanes (14) via first adjusting lever (17) and wherein the adjusting device comprises a bearing housing (7) penetrating actuating shaft (21) which is coupled at a first end to the adjusting ring (18) and at a second end with a second adjusting lever (20); and wherein the operating shaft (21) at the first end, at which it is coupled to the adjusting ring (18), an eccentric body (23) which engages with the adjusting ring (18).
    公开号:CH712914A2
    申请号:CH01026/17
    申请日:2017-08-15
    公开日:2018-03-15
    发明作者:Stefanak Petr；Hort Vladimir
    申请人:Man Diesel & Turbo Se；
    IPC主号:
    专利说明:

    Description: [0001] The invention relates to a radial turbine of a turbocharger and a turbocharger.
    From DE 10 311 205 B3 a radial turbine of an exhaust gas turbocharger with an adjustable guide vanes having guide is known. Each vane has a vane blade and a vane pin, wherein the vanes can be adjusted via an adjusting device. The adjusting device has an adjusting ring, wherein the Leitschaufelzapfen each adjustable vane is coupled to the adjusting ring via a respective first adjusting lever. By turning the adjusting ring in the circumferential direction ultimately the vanes can be adjusted, the first lever to implement the movement of the adjusting ring in movements of the vanes. The adjusting ring of the adjusting device is positioned in a housing, namely between a Turbinenzuströmgehäuse and a bearing housing. The rotation of the adjusting ring is initiated from the outside via a servomotor, wherein the servomotor is coupled to the adjusting ring via a bearing housing penetrating actuating shaft. The actuating shaft is coupled at a first end to the guide ring and at a second end to a second actuating lever, which is further connected to the servomotor. Although it is already possible to adjust the guide vanes of the distributor by means of an adjusting device of radial turbines known from the prior art, there is a need to further improve the adjustment of the guide vanes. In particular, the actuation of the guide vanes via the adjusting device should be made more reliable. Furthermore, it should be avoided that exhaust gas flows into the environment of the radial turbine and thus of the turbocharger.
    On this basis, the present invention has the object to provide a novel radial turbine of a turbocharger.
    According to a first aspect of the invention, this object is achieved by a radial turbine of a turbocharger according to claim 1. Hereinafter, the operating shaft at the first end, at which it is coupled to the adjusting ring, an eccentric body, which is in engagement with the adjusting ring. Preferably, the eccentric body engages indirectly via a sliding block in a recess in the adjusting ring. Hereby, a reliable adjustment of the guide vanes of the distributor is possible. By coupling the operating shaft with the adjusting ring on the eccentric body of the operating shaft, a reliable operation of the adjusting ring can always be ensured. Blocking of the adjusting ring is avoided. Then, when the eccentric body engages over the sliding block in a recess in the adjusting ring, the reliability in the operation of the guide vanes can be further increased.
    According to a second aspect of the invention, this object is achieved by a radial turbine of a turbocharger according to claim 5. Thereafter, a central portion of the operating shaft penetrates the bearing housing and is sealed relative to the bearing housing via at least one sealing element, wherein the position of the or each sealing element is secured in the bearing housing via a securing device. Preferably, the or each sealing element is formed as a graphite ring. This can be particularly advantageous avoided that exhaust gas flows through the bearing housing to the outside in the environment. Also, jamming of the operating shaft is prevented.
    The two above aspects of the invention may be used alone or preferably in combination with each other on a radial turbine.
    The inventive turbocharger is defined in claim 10.
    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 turbocharger with a radial turbine according to the invention in a perspective view;
    Fig. 2 shows the detail II of Fig. 1;
    3 shows a cross section through the radial turbine.
    4 shows a further cross section through the radial turbine;
    5a, 5b show a detail of the radial turbine with guide vanes in different relative positions; and FIG. 6 shows a section from FIGS. 5a, 5b in perspective view.
    FIG. 1 shows a perspective view of a turbocharger 1 comprising a turbine 2 and a compressor 3. In the turbine 2 shown in Fig. 1 is a radial turbine and in the compressor 3 shown in Fig. 1 is a centrifugal compressor. In the turbine, exhaust gas is expanded and this energy is recovered, which is used to compress charge air in the compressor 3.
    In Fig. 1, a Turbinenzuströmgehäuse 6 and a bearing housing 7 are shown by the turbine 2, wherein the Turbinenzuströmgehäuse 6 and the bearing housing 7 via a mounting ring 8, which is also referred to as a clamping claw, are interconnected. The fastening ring 8 is screwed to the Turbinenzuströmgehäuse 6 via a plurality of fastening screws 4 and 9 fastening nuts, namely such that in the assembled state of the mounting ring 8 a portion 10 of the bearing housing 7 partially engages around and so mounted the bearing housing 7 on Turbinenzuströmgehäuse 6. From the compressor 3, a compressor housing 5 is shown in Fig. 1.
    In the turbine housing 4, a turbine rotor 11 is arranged with a plurality of rotating blades 12.
    In the flow direction of the exhaust gas seen upstream of the turbine rotor 11, a nozzle 13 is positioned, which has a plurality of adjustable guide vanes 14. Each vane 14 has a vane blade 15 and a Leitschaufelzapfen 16, wherein the Leitschaufelzapfen 16 of each vane 14 is coupled via a respective first adjusting lever 17 with a collar 18 of an adjustment of Leitapprats 13.
    By rotation of the adjusting ring 18 in the direction of the double arrows 19 shown in Fig. 5a, 5b, the guide vanes 14, as shown in Fig. 5a, 5b can be removed, are relocated so that the orientation of the blades 15 of the vanes 14 within of Turbinenzuströmgehäuses 6 upstream of the turbine rotor 11 changes.
    The rotation of the adjusting ring 18 in the sense of the double arrows 19 is initiated from the outside via a servo motor, not shown, of the adjusting device, which acts with the interposition of a second actuating lever 20 and an actuating shaft 21 on the adjusting ring 18. The adjusting ring 18 is received or arranged in a cavity which is bounded on the one hand by the Turbinenzuströmgehäuse 6 and on the other hand by the bearing housing 7. The operating shaft 21 extends with a central portion 22 through the bearing housing 7 from inside to outside, wherein at a central portion outside the bearing housing 7, the second actuating lever 20 acts on the actuating shaft 21, and wherein inside the bearing housing 7 of the operating shaft 21 via an eccentric body 23 of the operating shaft 21 is coupled to the adjusting ring 18 and is in engagement with the adjusting ring 18.
    The operating shaft 21, via which therefore the adjusting ring 18 is rotatable, has a central portion 22 which penetrates the bearing housing 7 and on which the actuating lever 20 engages, and via the eccentric body 23, via which the operating shaft 21 with the skirt 18 is connected. Hereby, a particularly reliable displacement of the adjusting ring 18 is possible.
    Preferably, the eccentric body 23 of the operating shaft 21 via a sliding block 24 engages indirectly in the adjusting ring 18 a. This allows a particularly advantageous mounting of the eccentric body 23 in the adjusting ring 18. As best seen in Fig. 6, a recess 25 for receiving the sliding block 24 is formed in the adjusting ring 18, wherein the eccentric body 23 extends into a recess of the sliding block 24. The sliding block 24 is fixedly connected to the eccentric body 23 and transmits a rotation of the actuating shaft 21 in a rotation of the adjusting ring 18. Thus, a particularly reliable displacement of the adjusting ring 18 upon initiation via the servo motor, not shown, via the actuating lever 20 and the operating shaft 21st on the collar 18 attacks, possible.
    A tilting movement of the second actuating lever 20 in the sense of the double arrow 30 of FIG. 6 is initiated by the servo motor, not shown. As a result of this tilting movement of the second actuating lever 20, the rotation of the actuating shaft 21 in the sense of the double arrow 31 of FIG. 6 is caused. This rotation of the operating shaft 21 causes a displacement of the sliding block 24 in the sense of the double arrow 32 us so the rotation of the adjusting ring 18 in the sense of the double arrow 19. The first adjusting lever 17 transmit the rotation of the adjusting ring 18 in a rotation of the guide vanes 14th
    As already stated, penetrates a central portion 22 of the actuating shaft 21, the bearing housing 7. In this case, this central portion 22 of the actuating shaft 21 relative to the bearing housing 7 via at least one sealing element 26 is sealed. In Fig. 4, two sealing elements 26 are shown.
    The position of the or each sealing element 26 in the bearing housing 7 is secured by a securing device 27.
    The securing device 27 comprises a lock nut 28, which clamps the or each sealing element 26 in the bearing housing 7. Furthermore, the securing device 27 comprises an adjusting screw 29, which holds the lock nut 28 in the bearing housing 7. About the screw 29, a loosening of the lock nut 28 is thus prevented, so-that the lock nut 28, the sealing elements 26 always defined in the bearing housing 7 clamped.
    The sealing elements 26 are preferably graphite rings.
    About the above-described leadership of the actuating pin 21 in the bearing housing 7 can be reliably prevented that exhaust gas flows into the environment. Also, jamming of the operating shaft 22 is prevented.
    REFERENCE SIGNS LIST 1 turbocharger 2 radial turbine 3 compressor 4 fastening screws
    权利要求:
    Claims (10)
    [1]
    5 Compressor housing 6 Turbine inlet housing 7 Bearing housing 8 Fastening ring 9 Fastening nuts 10 Section 11 Turbine rotor 12 Blade 13 Conductor 14 Guide blade 15 Guide blade 16 Guide peg 17 Adjusting lever 18 Adjusting ring 19 Double arrow 20 Adjusting lever 21 Operating shaft 22 Section 23 Eccentric body 24 Sliding block 25 Recess 26 Sealing element 27 Securing device 28 Locking nut 29 Adjusting screw 30 Double Arrow 31 Double Arrow 32 Double Arrow Claims
    A radial turbine (2) of a turbocharger (1) for expanding a medium, comprising a turbine inlet housing (6) and a bearing housing (7) adjoining the turbine inlet housing (6); a turbine rotor (11) having rotor blades (12); variable speed vanes (14) positioned upstream of the blades (12) in the direction of flow of the media to be purged comprise nozzle (13), each vane (14) having a vane blade (15) and a vane journal (16); an adjusting device for adjusting the guide vanes (14) of the distributor (13), wherein the adjusting device has a displaceable adjusting ring (18), wherein the adjusting ring (18) coupled to the guide blade pins (16) of the guide vanes (14) via first adjusting lever (17) and wherein the adjusting device has an actuating shaft (21) which penetrates the bearing housing (7) and is coupled at a first end to the adjusting ring (18) and at a second end to a second actuating lever (20); characterized in that the operating shaft (21) at the first end, at which it is coupled to the adjusting ring (18), an eccentric body (23) which is in engagement with the adjusting ring (18).
    [2]
    2. Radial turbine according to claim 1, characterized in that the eccentric body (23) via a sliding block (24) with a recess (25) in the adjusting ring (18) is indirectly engaged.
    [3]
    3. Radial turbine according to claim 2, characterized in that the eccentric body (23) engages in a recess of the sliding block (24) and the sliding block (24) in the recess (25) in the adjusting ring (18).
    [4]
    4. Radial turbine according to claim 2 or 3, characterized in that the sliding block (24) with the eccentric body (23) is fixedly connected and a rotation of the actuating shaft (21) in a rotation of the adjusting ring (18) transmits.
    [5]
    5. Radial turbine (2) of a turbocharger (1) for expansion of a medium, with a Turbinenzuströmgehäuse (6) and to the Turbinenzuströmgehäuse (6) adjacent the bearing housing (7); a turbine rotor (11) having rotor blades (12); variable speed vanes (14) positioned upstream of the blades (12) in the direction of flow of the media to be purged comprise nozzle (13), each vane (14) having a vane blade (15) and a vane journal (16); an adjusting device for adjusting the guide vanes (14) of the distributor (13), wherein the adjusting device has a displaceable adjusting ring (18), wherein the adjusting ring (18) coupled to the guide blade pins (16) of the guide vanes (14) via first adjusting lever (17) and wherein the adjusting device has an actuating shaft (21) which penetrates the bearing housing (7) and is coupled at a first end to the adjusting ring (18) and at a second end to a second actuating lever (20); characterized in that a central portion (22) of the actuating shaft (21) penetrates the bearing housing (7) and is sealed to the bearing housing (7) via at least one sealing element (26), the position of the or each sealing element (26) in the bearing housing (7) via a securing device (27) is secured.
    [6]
    6. Radial turbine according to claim 5, characterized in that the central portion (22) relative to the bearing housing (7) is sealed by a plurality of graphite rings formed as sealing elements (26).
    [7]
    7. Radial turbine according to claim 5 or 6, characterized in that the securing means (27) comprises a lock nut (28) which clamps the or each sealing element (26) in the bearing housing (7).
    [8]
    8. Radial turbine according to claim 7, characterized in that the securing device (27) has an adjusting screw (29) which holds the lock nut (28) in the bearing housing (7).
    [9]
    9. Radial turbine according to one of claims 5 to 8, characterized in that it is designed according to one of claims 1 to 4.
    [10]
    10. Turbocharger (1), with a radial turbine (2) for the relaxation of exhaust gas and for recovering energy in the expansion of exhaust gas, and with a compressor for the compression of charge air using the axial turbine in the (2) energy, characterized in that the radial turbine (2) is designed according to one of Claims 1 to 9.
    类似技术:
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    同族专利:
    公开号 | 公开日
    CN107829788A|2018-03-23|
    CH712914B1|2021-07-30|
    JP2018048633A|2018-03-29|
    DE102016117345A1|2018-03-15|
    KR20180030427A|2018-03-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    DE102008000776A1|2008-01-21|2009-08-13|Bosch Mahle Turbo Systems Gmbh & Co. Kg|Turbine, in particular for an exhaust gas turbocharger, and exhaust gas turbocharger|
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    DE112014005169T5|2013-12-13|2016-07-28|Borgwarner Inc.|Adjusting damper|JP2020122443A|2019-01-31|2020-08-13|株式会社豊田自動織機|Turbocharger|
    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
    DE102016117345.2A|DE102016117345A1|2016-09-15|2016-09-15|Radial turbine of a turbocharger and turbocharger|
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