• 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, with a turbine for expanding a first medium, the turbine having a turbine housing and a turbine rotor, with a compressor for compressing a second medium using energy obtained in the turbine during expansion of the first medium, the compressor having a compressor housing and a having a compressor rotor coupled to the turbine rotor via a shaft, having a bearing housing (9) arranged between the turbine housing and the compressor housing, both the turbine housing and the compressor housing being connected to the bearing housing (9), having at least one bearing (10), via which the shaft is mounted in the bearing housing (9), the respective bearing (10) having a bearing bush (11) mounted in the bearing housing (9) in a rotationally fixed manner, with a radially outer lubricating gap between the bearing bush (11) and the bearing housing (9). (13) and between the bearing bush (11) and the shaft there is a radial inner lubricating gap (14). is ebildet, and wherein the bearing bush (11) of the respective bearing (10) is aligned via at least one spring element (15) in the radial direction relative to the bearing housing (9).
    公开号:CH714386B1
    申请号:CH01252/18
    申请日:2018-10-12
    公开日:2021-12-30
    发明作者:brandt Sven
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    The invention relates to a turbocharger.
    The basic structure of a turbocharger is known from DE 10 2013 002 605 A1. A turbocharger has a turbine in which a first medium is expanded. A turbocharger also has a compressor in which a second medium is compressed using the energy obtained in the turbine when the first medium expands. The turbocharger turbine has a turbine housing and a turbine rotor. The compressor of the turbocharger has a compressor housing and a compressor rotor. A bearing housing is positioned between the turbine housing of the turbine and the compressor housing of the compressor, the bearing housing being connected to the turbine housing on the one hand and to the compressor housing on the other hand. A shaft is mounted in the bearing housing, via which the turbine rotor is coupled to the compressor rotor.
    From practice it is known that the shaft which couples the turbine rotor of the turbine to the compressor rotor of the compressor is mounted in the bearing housing via at least one bearing. The respective bearing of the bearing housing for supporting the shaft has a bearing bush which is either non-rotatably mounted in the bearing housing or can rotate. The present invention relates to a turbocharger in which the bearing bushing of the bearing is mounted in the bearing housing in a rotationally fixed manner in the region of at least one bearing of the bearing housing. A radially outer lubricating gap is formed between the bearing housing and the bearing bush and a radially inner lubricating gap is formed between the bearing bush and the shaft. The radially outer lubricating gap formed between the bearing housing and the bearing bush is also referred to as a squeeze oil damper.
    In turbochargers known from practice, an exact alignment of the bearing bush relative to the bearing housing causes difficulties, which means that an exact gap dimension maintenance during operation of the turbocharger is not possible both in the area of the radially outer lubrication gap and in the area of the radially inner lubrication gap. This can impair the lubrication in the area of the radially outer and in the area of the radially inner lubricating gap.
    Proceeding from this, the object of the present invention is to create a new type of turbocharger. This object is achieved by a turbocharger according to claim 1. According to the invention, the bearing bush of the respective bearing is aligned in the radial direction relative to the bearing housing via at least one spring element. The or each spring element serves not only for the radial alignment of the bearing bush relative to the bearing housing, but rather also for damping the bearing bush during operation. The lubricating function can be optimally guaranteed both in the area of the radially outer lubricating gap and in the area of the radially inner lubricating gap.
    Preferably, the respective spring element is inserted into a groove in the bearing housing, the respective spring element being supported on the one hand on a groove base of the groove of the bearing housing and on the other hand on a radially outer surface of the bearing bush. This design is structurally particularly simple and allows an exact relative alignment of the bearing bush to the bearing housing.
    According to an advantageous development of the invention, the bearing bush of the respective bearing is aligned via a plurality of spring elements in the radial direction relative to the bearing housing, a first spring element acting on a first axial end section and a second spring element acting on a second axial end section of the bearing bush. The bearing bush can hereby be aligned exactly in the radial direction with respect to the bearing housing, and the bearing bush can also be damped.
    Preferably, the radially outer lubricating gap can be supplied with lubricating oil from at least one first line, which opens into the radially outer lubricating gap between the grooves accommodating the spring elements. In this way, the radially outer lubricating gap can be optimally supplied with oil, namely via at least one first line, which extends between the spring elements or the grooves accommodating the spring elements.
    Preferred developments of the invention result 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 limited thereto. 1 shows a cross section through a turbocharger according to the prior art; 2 shows a cross section through a first turbocharger according to the invention in the region of a bearing of the bearing housing; and FIG. 3 shows a cross section through a second turbocharger according to the invention in the area of a bearing of the bearing housing.
    The invention relates to a turbocharger.
    A turbocharger 1 has a turbine 2 for expanding a first medium, in particular for expanding exhaust gas from 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 , wherein the bearing housing 9 is positioned between the turbine housing 4 and the compressor housing 5 and is connected to both the turbine housing 4 and the compressor housing 5.
    The shaft 8, which couples the turbine rotor 5 of the turbine 2 to the compressor rotor 7 of the compressor 3, is mounted in the bearing housing 9, via at least one bearing 10 of the bearing housing 9. The bearing housing 9 preferably comprises two bearings 10 for Bearing of the shaft 8 , a first bearing 10 engaging on a section of the shaft 8 facing the turbine rotor 5 and a second bearing 10 engaging on an end of the shaft 8 facing the compressor rotor 7 .
    The respective bearing 10 has a bearing bush 11 which is mounted in the bearing housing 9 in a rotationally fixed manner. Such a bearing bushing 11 mounted non-rotatably in the bearing housing 9 or non-rotatably on the bearing housing 9 is a housing-side, stator-side subassembly which is stationary when the shaft 8 is rotating.
    A radially outer lubricating gap 14 and between the bearing bush 11 and the shaft 8 a radially inner lubricating gap 14 is formed between the bearing bush 11 mounted in the bearing housing 9 in a rotationally fixed manner and the bearing housing 9 .
    The bearing bush 11 is inserted into a recess in the bearing housing 9 and borders with an axial end on a stop formed by the bearing housing 9 . A cover 12 is positioned at the opposite axial end of the bearing bushing 11 , which together with the bearing housing 11 provides the axial positioning of the bearing bushing 11 in the bearing housing 9 .
    The bearing bush 11 of the respective bearing 10, which is rotatably mounted in the bearing housing 9, is aligned relative to the bearing housing 9 in the radial direction via at least one spring element 15. The respective spring element 15 is inserted into a groove 16 in the bearing housing 9 , with the respective spring element 15 being supported on the one hand on a groove base of the respective groove 16 of the bearing housing 9 and on the other hand on a radially outer surface of the bearing bush 11 .
    In the preferred exemplary embodiments shown in FIGS. 2 and 3, the bearing bushing 11 of the bearing 10 shown in each case is aligned in the radial direction relative to the bearing housing 9 via a plurality of spring elements, in particular via two spring elements 15, with a first spring element 15 being attached to a first axial end section and a second spring element 15 engages a second axial end portion of the bearing bush 11 shown, and each spring element 15 is received in a corresponding groove 16 of the bearing housing 9. In the exemplary embodiment of FIG. 2, the spring elements 15 shown, which are inserted into the respective groove 16 of the bearing housing 9, are plate springs running around in the respective groove 16. In the exemplary embodiment in FIG. 3 , on the other hand, it is a question of laminar springs running around in the respective groove 16 .
    With the invention, an exact positioning of the bearing bush 11 of a bearing 10 in the bearing housing 9 of the turbocharger 1 is possible with a simple design effort, with the lubricating function being ensured both in the area of the radially outer lubricating gap 13 and in the area of the radially inner lubricating gap 14 can. Due to the fact that the spring elements 15 not only align the respective bearing bush 11 in the radial direction relative to the bearing housing 9, but rather also dampen the bearing bush 11 during operation of the turbocharger 1, the radially outer lubricating gap 13 no longer has to assume the function of a squeeze oil damper; radially outer lubricating gap 13 only the lubricating oil supply for the inner lubricating film.
    In the exemplary embodiment shown, the radially outer lubricating gap 13 can be supplied with lubricating oil via at least one first line 17 starting from a main oil supply line 18, with the or each first line 17 opening into the radially outer lubricating gap 13 between the grooves 16 accommodating the spring elements 15. Starting from the radially outer lubricating gap 13 , the radially inner lubricating gap 14 can be supplied with lubricating oil via at least one second line (not shown) extending through the bearing bush 11 .
    On the radially outer surface of the bearing bush 11, on which the or each spring element 15 is supported, an anti-wear coating can be applied.
    The invention can be used in any type of turbocharger. The invention is independent of the specific design of the turbine and the compressor. The invention is also independent of the specific design of an internal combustion engine that interacts with the turbocharger.
    Reference 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 bearing 11 bearing bush 12 cover 13 lubricating gap 14 lubricating gap 15 spring element 16 groove 17 line 18 main oil supply line
    权利要求:
    Claims (7)
    [1]
    1. Turbocharger (1),with a turbine (2) for expanding a first medium, the turbine (2) having a turbine housing (4) and a turbine rotor (5),with a compressor (3) for compressing a second medium using energy obtained in the turbine (2) when the first medium expands, the compressor (3) having a compressor housing (6) and a shaft connected to the turbine rotor (5). (8) has a coupled compressor rotor (7),with a bearing housing (9) arranged between the turbine housing (4) and the compressor housing (6), both the turbine housing (4) and the compressor housing (6) being connected to the bearing housing (9),with at least one bearing (10) via which the shaft (8) is mounted in the bearing housing (9), the respective bearing (10) having a bearing bush (11) mounted in the bearing housing (9) in a rotationally fixed manner, with between the bearing bush ( 11) and the bearing housing (9) a radially outer lubricating gap (13) and between the bearing bush (11) and the shaft (8) a radially inner lubricating gap (14) is formed, characterized in thatthe bearing bush (11) of the respective bearing (10) is aligned in the radial direction relative to the bearing housing (9) via at least one spring element (15).
    [2]
    2. Turbocharger according to claim 1, characterized in that the respective spring element (15) is inserted into a groove (16) in the bearing housing (9), the respective spring element (15) on the one hand being on a groove bottom of the groove (16) of the bearing housing ( 9) and on the other hand on a radially outer surface of the bearing bush (11).
    [3]
    3. Turbocharger according to Claim 1, characterized in that the respective spring element (15) is designed as a laminar spring running around in the respective groove (16).
    [4]
    4. Turbocharger according to claim 2, characterized in that the respective spring element (15) is designed as a disk spring running around in the respective groove (16).
    [5]
    5. Turbocharger according to one of claims 1 to 4, characterized in that the bearing bush (11) of the respective bearing (10) is aligned in the radial direction relative to the bearing housing (9) via a plurality of spring elements (15), a first spring element (15) on a first axial end section and a second spring element (15) acts on a second axial end section of the bearing bush (11).
    [6]
    6. Turbocharger according to claim 5, characterized in that the radially outer lubricating gap (13) can be supplied with lubricating oil from at least one first line (17), which grooves (16) accommodating the two spring elements (15) into the radially outer lubricating gap (13) opens.
    [7]
    7. Turbocharger according to claim 6, characterized in that the radially inner lubricating gap (14) can be supplied with lubricating oil starting from the radially outer lubricating gap (13).
    类似技术:
    公开号 | 公开日 | 专利标题
    DE3008949C2|1982-04-29|Bearing arrangement for a shaft rotating at high speed, in particular the rotor shaft of a turbocharger
    EP0976938A2|2000-02-02|Radial bearing with viscous damping mechanism
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    WO2012079883A1|2012-06-21|Bearing unit for a turbocharger
    DE112013002424T5|2015-01-29|turbocharger
    DE102005043575A1|2007-03-15|Torsion spring for belt pulley, has two components, where one component has force transmission unit with connecting unit for producing form-fit connection with rotatable shaft or hub unit that is fastened at shaft
    EP3091188B1|2018-08-01|Flow engine with a sealing arrangement
    DE102010054937A1|2012-06-21|Bearing arrangement for a turbocharger
    DE102016115874B4|2021-09-23|Bearing device for a crankshaft of an internal combustion engine
    DE102010034766B4|2014-02-27|Bearing arrangement for the compressor side of a turbocharger of an internal combustion engine
    DE60014971T2|2006-03-09|BALL BEARING UNIT FOR THE ROTOR OF A TURBOCHAIR
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    DE112015005266T5|2017-08-17|Manufacturing method for fluid dynamic bearing devices
    DE102017205668A1|2017-10-05|Bearing for a turbocharger or an exhaust gas turbine, turbocharger or exhaust gas turbine with such storage and method for mounting a turbine shaft in a turbocharger or an exhaust gas turbine
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    EP2881634A1|2015-06-10|Flap assembly for an actuator, in particular for an exhaust valve of a combustion engine
    WO2004053364A1|2004-06-24|Slide ring seal assembly
    CH714387A2|2019-05-31|Turbocharger.
    EP3379037B1|2021-06-02|Seal on the inner ring of a guide blade assembly
    DE102016103815B4|2017-12-28|Mechanically controllable valve train
    EP3580465A1|2019-12-18|Plain bearing with hydrodynamic axial securing
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    DE102020115872A1|2021-12-16|Internal combustion engine and a method for producing an internal combustion engine
    DE102015122403A1|2017-06-22|Bearing device for an exhaust gas turbocharger and turbocharger
    同族专利:
    公开号 | 公开日
    JP2019090411A|2019-06-13|
    CH714386A2|2019-05-31|
    CN109798156A|2019-05-24|
    US20190145278A1|2019-05-16|
    KR20190056310A|2019-05-24|
    DE102017126935A1|2019-05-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5714818A|1994-10-18|1998-02-03|Barber-Colman Company|Backup bearing for magnetic bearings|
    US20070110351A1|2005-11-16|2007-05-17|Honeywell International, Inc.|Centering mechanisms for turbocharger bearings|
    DE112010001913T5|2009-05-07|2012-06-14|Borgwarner Inc.|Spring clip method for preventing rotation and cutting limitation of a rolling element bearing cartridge|
    CN102128062A|2010-12-31|2011-07-20|中国兵器工业集团第七○研究所|Rotor shafting structure for ball-bearing turbocharger|
    DE102013002605A1|2013-02-15|2014-08-21|Man Diesel & Turbo Se|Turbocharger and thrust bearing for a turbocharger|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102017126935.5A|DE102017126935A1|2017-11-16|2017-11-16|turbocharger|
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