• 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 turbocharger having a turbine for relaxing a first medium, said turbine having a turbine housing and a turbine rotor, with a compressor for compressing a second medium using energy recovered in the turbine upon expansion of the first medium, the compressor comprising a compressor housing and a turbine comprising a turbine rotor coupled via a shaft compressor rotor, with a between the turbine housing (4) and the compressor housing arranged bearing housing (9), wherein both the turbine housing and the compressor housing with the bearing housing (9) are connected to at least one bearing (10 ), via which the shaft in the bearing housing (9) is mounted, wherein the respective bearing (10) in the bearing housing (9) arranged bearing bush (11), wherein between the bearing bush (11) and the bearing housing (9) has a radial outer lubrication gap (13) and between the bearing bush (11) and the shaft a radially inner Schmierspa lt (14) is formed, wherein the radially outer lubrication gap (13) and the radially inner lubrication gap (14) starting from an oil supply main line (15) are independently supplied with lubricating oil.
    公开号:CH714388A2
    申请号:CH01266/18
    申请日:2018-10-17
    公开日:2019-05-31
    发明作者:brandt Sven；Wurm Claudius；Denkel Harald
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    Description: The invention relates to a turbocharger.
    [0002] 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. Furthermore, a turbocharger has a compressor in which a second medium is compressed, using the energy obtained in the turbine when the first medium is expanded. The turbine of the turbocharger has a turbine housing and a turbine rotor. The turbocharger's compressor 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 on the one hand to the turbine housing and on the other hand to the compressor housing. 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 mounted in the bearing housing in a rotationally fixed manner or can rotate. The present invention relates to a turbocharger in which in the area of at least one bearing of the bearing housing, the bearing bush of the bearing is either mounted in the bearing housing in a rotationally fixed manner or can rotate. A radially outer lubricating gap is formed between the bearing housing and the bearing bush and a radially inner lubricating gap between the bearing bush and the shaft. The radially outer lubricating gap formed between the bearing housing and the bearing bush arranged in the bearing housing is also referred to as a squeeze oil damper.
    In turbochargers known from practice, the radially outer lubricating gap and the radially inner lubricating gap, which are formed between the bearing bush and the bearing housing or the shaft, can be supplied with lubricating oil depending on one another, starting from an oil supply main line, namely in such a way that starting from the main oil supply line, the lubricating oil can be fed via at least one line to the radially outer lubricating gap between the bearing bush and the bearing housing, and that, via at least one further line introduced into the bearing bush, the lubricating oil, starting from the radially outer lubricating gap, the radially inner lubricating gap between the bearing bush and the Shaft is formed, can be fed. Since, in practice, the radially inner lubrication gap is supplied with lubricating oil starting from the radially outer lubrication gap, the functionality of the outer lubrication gap is impaired.
    Proceeding from this, the present invention has for its object to provide a novel turbocharger.
    This object is achieved by a turbocharger according to claim 1.
    According to the invention, the radially outer lubricating gap of the bearing bush and the radially inner lubricating gap of the bearing bush can be supplied with lubricating oil independently of one another, starting from an oil supply main line. The inner lubrication gap is therefore not supplied with lubricating oil from the outer lubrication gap, but rather from the main oil supply line. There is then no danger that the functionality of the radially outer lubrication gap is impaired by the oil supply to the radially inner lubrication gap. Rather, the radially outer lubrication gap can optimally perform its function as a squeeze oil damper.
    Preferably, the radially outer lubricating gap can be supplied with lubricating oil via at least one first line branching off from the main oil supply line, wherein the radially inner lubricating gap can be supplied with lubricating oil via at least one second line branching off the main oil supply line. This embodiment is preferred in order to supply the radially inner lubricating gap with lubricating oil starting from the main oil supply line, irrespective of the radially outer lubricating gap.
    According to an advantageous development of the invention, the or each first line opens radially outside into the radially outer lubricating gap, the or every second line opening on an axial side of the bearing bush in an annular channel of the bearing housing. Starting from the annular channel formed on the axial side of the bearing bush, the lubricating oil can easily and reliably get into the area of the inner lubricating gap.
    According to a first variant of the invention, the lubricating oil passes from the ring channel through an axial gap between the bearing bush and the bearing housing in the region of the radially inner lubricating gap. This variant of the invention is structurally particularly simple. Holes in the bearing bush can be omitted.
    According to a second, alternative variant of the invention, at least one line is introduced into the bearing bush, via which the lubricating oil, starting from the annular channel, reaches the region of the radially inner lubricating gap. The or each line introduced into the bearing bush is preferably inclined with respect to the axial direction and / or with respect to the radial direction of the bearing bush. Although this variant of the invention is structurally complex, the radially inner lubricating gap can be supplied with lubricating oil better than in the first variant, starting from the ring channel.
    [0012] 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 restricted to this. It shows:
    CH 714 388 A2
    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;
    Fig. 3 shows the detail III of Fig. 2;
    4 shows a cross section through a second turbocharger according to the invention in the region of a bearing of the bearing housing; and
    5 shows the detail V of FIG. 4.
    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 when the first medium is expanded.
    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 compressor rotor 7 and the turbine rotor 5 to each other, is rotatably supported by at least one bearing 10 of the bearing housing 9 in the bearing housing 9, in particular is on a section facing the turbine rotor 5 and on a section facing the compressor rotor 7 the shaft 8 each have such a bearing 10 for supporting the shaft 8.
    2, 3 show details of a turbocharger according to the invention in the area of such a bearing 10 of the turbine inflow housing 9. The bearing 10 comprises a bearing bush 11, which is rotatably fixed in the bearing housing 9 or non-rotatably by means not shown in FIGS. 2, 3 Bearing housing 9 is mounted. The bearing bush 11 accordingly represents a housing-fixed component in the exemplary embodiment shown. According to FIGS. 2, 3, the bearing bush 11, viewed in the axial direction, is fixed in its axial position between the bearing housing 9 and a cover 12. It should be pointed out that it is also possible that the bearing bush 11 is not mounted in the housing 11 in a rotationally fixed manner, but rather can rotate.
    Between the bearing housing 9 and the bearing bushing 11 arranged in the bearing housing 9, a radially outer lubricating gap 13 is formed, which acts as a squeeze oil damper. Furthermore, a radially inner lubricating gap 14 is formed between the shaft 8 (not shown in FIGS. 2, 3) and the bearing bush 11.
    In the sense of the invention, the radially outer lubricating gap 13 and the radially inner lubricating gap 14 can be supplied with lubricating oil independently of one another, starting from an oil supply main line 15 of the bearing housing 9. 2, at least one first line 16 branches off from the main oil supply line 15, via which oil starting from the main oil supply line 15 can be fed to the radially outer lubricating gap 13. At least one second line 17 branches off from the main oil supply line 15, via which the radially inner lubricating gap 14 can be supplied with lubricating oil starting from the main oil supply line 15.
    In the embodiment shown in Fig. 2, 3, the or each first line 16, which serves to supply the outer lubricating gap 13 with oil, opens radially outside into the radially outer lubricating gap 13. The or every second line 17, the oil supply of the radially inner lubricating gap 14 opens at an axial end or on an axial side of the bearing bush 11 into an annular channel 18 of the bearing housing 19, specifically on the side of the bearing bush 11 opposite the cover 12.
    This ring channel 18 is introduced circumferentially into the bearing housing 9, namely axially laterally next to the bearing bush 11 on the side of the bearing bush 11 opposite the cover 12.
    In the embodiment shown in Fig. 2, 3, the lubricating oil from this ring channel 18 passes through an axial gap 19 between the bearing bush 11 and the bearing housing 9 in the region of the radially inner lubricating gap 14. Holes in the bearing bush 11 can be so complete to be dispensed with.
    Fig. 4.5 shows an alternative embodiment of a bearing 10 of a turbocharger 1 according to the invention, the embodiment of FIGS. 4, 5 differing from the embodiment of FIGS. 2, 3 in that the lubricating oil, starting from the annular channel 18, differs radially inner lubricating gap 14 can be fed via at least one line 20 introduced into the bearing bush 11, which extends from the annular channel 18 into the region of the radially inner lubricating gap 14 and there in the region of a lubricating oil pocket 21 which is formed on a radially inner surface of the bearing bush 11 , flows out.
    The or each line 20 introduced into the bearing bush 11 is inclined relative to the axial direction of the bearing bush 11 and / or relative to the radial direction of the bearing bush 11.
    CH 714 388 A2 According to the invention, the radially outer lubrication gap 13 and the radially inner lubrication gap 14 of a bearing bush 11 of a bearing 10 of a bearing housing 9 of a turbocharger 1 can therefore be supplied with lubricating oil independently of one another via separate lines 16, 17 from an oil supply main line 15. There is no danger that the functionality in the area of the outer lubricating gap 13 is impaired by supplying the radially inner lubricating gap 14 with lubricating oil.
    The or every second line 17, via which, starting from the main oil supply line 15, the radially inner lubricating gap 14 can be supplied with lubricating oil, opens into the annular channel 18, which is formed on the bearing housing 9, starting from this annular channel 18, preferably via lubricating oil lines 20 introduced into the bearing bush 11 can be fed to the inner lubricating gap 14, specifically in the region of lubricating oil pockets 21.
    In the embodiment shown, the lines 20, which are introduced into the bearing bush 11, open into the respective lubricating oil pocket 21 such that the mouth opening 22 of the respective duct 20 in the region of the respective lubricating oil pocket 21 lies approximately in the axial center of the bearing bush 11 ,
    The invention can be used on all types of turbochargers in which in the area of the bearing housing 9 at least one bearing 10 is designed with a bearing bush 11 fixed to the housing. The invention is independent of the structural design of the turbocharger, that is to say regardless of whether the turbocharger uses a radial turbine or an axial turbine. Furthermore, the invention is independent of the specific design of the compressor and of the internal combustion engine on which the turbocharger is used.
    Reference symbol list [0028]
    turbocharger
    turbine
    compressor
    turbine housing
    turbine rotor
    compressor housing
    compressor rotor
    wave
    bearing housing
    camp
    bearing bush
    cover
    lubricating gap
    lubricating gap
    Oil supply main line
    management
    management
    annular gap
    axial gap
    management
    Oil bag
    mouth
    CH 714 388 A2
    权利要求:
    Claims (8)
    [1]
    claims
    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 Use of energy obtained in the turbine (2) when the first medium relaxes, the compressor (3) having a compressor housing (6) and a compressor rotor (7) coupled to the turbine rotor (5) via a shaft (8), 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) which the shaft (8) is mounted in the bearing housing (9), the respective bearing (10) having a bearing bush (11) arranged in the bearing housing (9), with a radial between the bearing bush (11) and the bearing housing (9) outer lubrication gap (13) and zwis Chen the bearing bush (11) and the shaft (8) is formed a radially inner lubricating gap (14), characterized in that the radially outer lubricating gap (13) and the radially inner lubricating gap (14) independently of one another starting from an oil supply main line (15) can be supplied with lubricating oil.
    [2]
    2. Turbocharger according to claim 1, characterized in that the radially outer lubricating gap (13) can be supplied with lubricating oil via at least one first line (16) branching off from the main oil supply line (15), and that the radially inner lubricating gap (14) can be supplied via at least one the second line (17) branching off from the main oil supply line (15) can be supplied with lubricating oil.
    [3]
    3. Turbocharger according to claim 1 or 2, characterized in that the or each first line (16) opens radially outside into the radially outer lubricating gap (13).
    [4]
    4. Turbocharger according to one of claims 1 to 3, characterized in that the or every second line (17) on an axial side of the bearing bush (11) opens into an annular channel (18) of the bearing housing (9).
    [5]
    5. Turbocharger according to claim 4, characterized in that the lubricating oil, starting from the ring channel (18), passes through an axial gap (19) between the bearing bush (11) and the bearing housing (9) into the region of the radially inner lubricating gap (14).
    [6]
    6. Turbocharger according to claim 4, characterized in that in the bearing bush (11) at least one line (20) is introduced, via which the lubricating oil from the ring channel (18) reaches the area of the radially inner lubricating gap (14).
    [7]
    7. Turbocharger according to claim 6, characterized in that the or each line (20) introduced into the bearing bush (11) is inclined with respect to the axial direction of the bearing bush (11).
    [8]
    8. Turbocharger according to claim 6 or 7, characterized in that the or each line (20) introduced into the bearing bush (11) is inclined relative to the radial direction of the bearing bush (11).
    CH 714 388 A2
    CH 714 388 A2
    CH 714 388 A2 .//1
    类似技术:
    公开号 | 公开日 | 专利标题
    DE102014201547B4|2016-03-24|TURBOCHARGER
    DE102009038772A1|2011-03-03|Exhaust gas turbine for a turbo-compound system
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    DE102014119066A1|2016-06-23|Aero engine with a device for separating oil
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    DE19925779A1|2000-12-07|Exhaust turbocharger with emergency oil tank has oil feed device from oil reservoir located within turbocharger bearing housing above oil return
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    DE112015002046T5|2017-03-02|Bearing housing fuselage group of an exhaust gas turbocharger
    EP3374602B1|2020-05-20|Arrangement for sealing a bearing casing and exhaust gas turbocharger comprising such arrangement
    DE102014201081A1|2015-07-23|turbocharger
    DE102008033814A1|2010-01-21|Bearing section for turbo charger, has bearing device with bush, which is arranged in bearing section area of bearing section
    CH714386A2|2019-05-31|Turbocharger.
    CH714387A2|2019-05-31|Turbocharger.
    EP2743460B1|2017-04-05|Shaft seal
    DE102015122403A1|2017-06-22|Bearing device for an exhaust gas turbocharger and turbocharger
    EP1396612A1|2004-03-10|Sealing for a fluid energy machine
    DE102012011144A1|2013-12-05|Hydraulic seal arrangement
    同族专利:
    公开号 | 公开日
    DE102017126936A1|2019-05-16|
    JP2019090412A|2019-06-13|
    US20190145280A1|2019-05-16|
    CN109798191A|2019-05-24|
    US10605306B2|2020-03-31|
    KR20190056297A|2019-05-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3811741A|1972-12-26|1974-05-21|Garrett Corp|Bearing|
    US4370106A|1979-03-09|1983-01-25|Cummins Engine Company|Bearing assembly for high speed shaft|
    IT1185677B|1984-09-03|1987-11-12|Ishikawajima Harima Heavy Ind|SUPPORT DEVICE FOR EXHAUST GAS TURBOCHARGER|
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    JP6070232B2|2013-02-05|2017-02-01|株式会社Ihi|Turbocharger|
    DE102013002605A1|2013-02-15|2014-08-21|Man Diesel & Turbo Se|Turbocharger and thrust bearing for a turbocharger|
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    DE102016215275A1|2016-08-16|2018-02-22|Bosch Mahle Turbo Systems Gmbh & Co. Kg|Bearing device of an exhaust gas turbocharger|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102017126936.3A|DE102017126936A1|2017-11-16|2017-11-16|turbocharger|
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