• 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:
    End cover (13) for a compressor impeller of an exhaust gas turbocharger, via which the air-conducting compressor impeller of Ölbeaufschlagten assemblies of the exhaust gas turbocharger is separable, with a passage opening for a shaft (12) having base body (16), wherein on the base body (16) at least one of the compressor impeller zuwendbarer ring-like projection (22) is formed.
    公开号:CH708435B1
    申请号:CH01106/14
    申请日:2014-07-21
    公开日:2018-06-29
    发明作者:Schorer Paul；Griesshaber Frank；Boehme Alexander
    申请人:Man Diesel & Turbo Se；
    IPC主号:
    专利说明:

    Description: The invention relates to an end cover for a compressor impeller of an exhaust gas turbocharger. The invention further relates to an exhaust gas turbocharger according to the preamble of claim 6.
    From DE 10 2010 038 524 A1, the basic structure of an exhaust gas turbocharger is known. Thus, the exhaust gas turbocharger shown there includes a compressor having a compressor impeller and a compressor impeller shell and a turbine having a turbine impeller and a turbine runner housing, wherein the compressor impeller and the turbine impeller are coupled via a shaft which is mounted in a bearing housing. According to DE 10 2010 038 524 A1, a closure cover is provided both in the region of the turbine and in the region of the compressor, the closure cover for the compressor impeller separating the air-conducting compressor impeller from oil-loaded assemblies of the exhaust gas turbocharger, and the end cover associated with the turbine impeller carrying the exhaust gas Turbine wheel also separated from Ölbeaufschlagten assemblies of the exhaust gas turbocharger. The shaft which couples the compressor impeller with the turbine runner extends on the one hand through a passage opening in the end cover of the compressor impeller and on the other hand through a passage opening in the end cap of the turbine runner.
    During operation of the exhaust gas turbocharger there is a risk that the compressor wheel breaks. Then, when the compressor impeller breaks, fragments of the compressor impeller may damage the compressor impeller cover, allowing oil from the oil-imparted assemblies to enter the area of the air-bearing compressor impeller. This can lead to an oil mist explosion.
    There is therefore a need for an exhaust gas turbocharger or on a cover for a compressor impeller of the exhaust gas turbocharger, with which the risk of such oil mist explosion can be reduced.
    On this basis, the invention is based on the object to provide a novel cover for a compressor impeller of an exhaust gas turbocharger and an exhaust gas turbocharger with such a cover cover.
    This object is achieved by a cover according to claim 1. According to the invention, at least one ring-like projection which can be turned towards the compressor impeller is formed on the main body of the end cover. The or each annular projection formed on the base of the end cap and facing the compressor impeller stiffens the compressor impeller cover. Should the compressor impeller break, this reduces the risk of damaging the end cover in such a way that an oil mist explosion can occur. The or each annular projection receives kinetic energy from fragments of the compressor impeller and can deflect same.
    Preferably, the or each projection runs around in the circumferential direction and extends, starting from the main body in the axial direction of the compressor impeller. This embodiment of the or each projection on the end cover for the compressor wheel provides a particularly advantageous stiffening of the end cover.
    According to an advantageous development a plurality of the compressor impeller zuwendbare, ring-shaped and concentric projections are formed on the body. Hereby, the end cover can be optimally stiffened.
    Preferably, an axial extent of the projections is dimensioned such that free ends of the projections each have a nearly identical distance to a the end cover zuwendbaren compressor wheel contour. Preferably, in the radial direction, a distance between adjacent projections corresponds at least to the radial thickness of the projections. Hereby, the kinetic energy of it in the event of damage to the compressor wheel forming fragments of the same can be optimally absorbed.
    The exhaust gas turbocharger according to the invention is defined in claim 6.
    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 drawing. Showing:
    1 shows a cross section through an inventive cover for a compressor impeller of an exhaust gas turbocharger.
    FIG. 2 shows a plan view of the end cover according to the invention; FIG. and
    3 shows an excerpted cross section through an exhaust gas turbocharger according to the invention in the region of a closure cover according to the invention.
    The present invention relates to a cover for a compressor impeller of a compressor of an exhaust gas turbocharger and an exhaust gas turbocharger with such a cover.
    The basic structure of an exhaust gas turbocharger is familiar to those skilled in the art and known for example from DE 10 2010 038 524 A1.
    It should be noted for the sake of completeness that an exhaust gas turbocharger includes a compressor and a turbine. The compressor has a compressor impeller and a compressor impeller housing. The turbine has a turbine runner and a turbine runner housing. The compressor impeller of the compressor and the turbine impeller of the turbine are coupled via a shaft which is mounted in a bearing housing.
    The compressor impeller of the compressor of the exhaust gas turbocharger is a compressor side end cap and the turbine wheel of the turbine of the exhaust gas turbocharger associated with a turbinenseitiger end cover to separate the respective wheels of an oil-carrying region of the exhaust gas turbocharger, such as oil bearing bearing housing.
    Fig. 3 shows a schematic, fragmentary cross section through an exhaust gas turbocharger in the region of a compressor impeller 10, a bearing housing 11 for a shaft 12 and a compressor-side end cover 13. The compressor impeller 10 is mounted on the shaft 12 via a retaining ring 14, wherein between the compressor impeller 10 and the retaining ring 14 adjacent to the end cover 13, a piston ring 15 is provided.
    The end cap 13 for the compressor impeller 10, which separates the air-bearing compressor impeller 10 relative to the bearing housing 11 and thus against oil-bearing assemblies of the exhaust gas turbocharger and seals, has a base body 16 with a passage opening 17 for the shaft 12, which the compressor impeller 10 with coupled to the turbine runner.
    The main body 16 of the end cover 13 has a stepped outer contour, on which in the embodiment shown a plurality of grooves 18 are formed for receiving sealing rings, not shown, which ensure the sealing of the end cover 13 relative to the bearing housing 11.
    Between the groove 18 which is positioned on the largest outer diameter of the outer contour of the base body 16, and the groove 18 which is positioned on an average outer diameter of the outer contour of the base body 16, a groove 19 is formed, which together with the adjacent Bearing housing 11 defines a cooling channel 20 which is flowed through by cooling medium.
    Since water is preferably used as the cooling medium, a leakage groove 21 is formed between the located on the outer diameter of the outer contour of the outer body 16 groove 18 and located on the smallest outer diameter of the outer contour of the body 16 groove 18, for the If the seal positioned on the average outer diameter of the outer contour of the main body 16 should fail, this prevents the cooling water from penetrating into the oil-conducting region of the turbocharger.
    According to the invention, at least one annular projection 22, which can be turned towards the compressor impeller 10, is formed on the main body 16 of the end cover 13. In the preferred embodiment shown, three such annular projections 22 are present, which rotate in the circumferential direction and surround concentrically.
    The projections 22 extend from the base body 16 in the direction of the compressor impeller 10, wherein an extension of the projections 22 in the axial direction A is dimensioned such that free ends of the projections 22 each have a nearly identical distance to the end cap 13 facing compressor wheel contour 23 have.
    As seen in the radial direction R, a distance between respectively adjacent projections 22 corresponds at least to the radial thickness of the projections 22.
    A risk of damage to the compressor impeller 10 is greatest in the region in which the piston ring 15 is positioned. A fragment of the compressor impeller 10 forming in this region, if necessary in the event of damage, is first thrown radially outward as a result of the kinetic energy of the compressor impeller 10 and then reaches at least one of the projections 22, whereby the projections 22 can deform elastically in the radial direction, In order to absorb the kinetic energy of such a fragment, and wherein the projections 22 in this case deflect the fragment in the axial direction, namely in the direction of the compressor impeller 10th
    Fragments of the compressor impeller 10 can therefore no longer penetrate the end cover 13 of the compressor impeller 10, so that in the event of damage to the compressor impeller 10, the functionality of the end cover 13 is maintained. Accordingly, the same can still separate the oil-carrying region of the exhaust-gas turbocharger from the air-conducting region of the same, so that there is no danger of oil entering the air-conducting region of the exhaust-gas turbocharger and causing an oil-mist explosion.
    The concentrically enclosing projections 22 are formed on a region of the base body 16 of the end cover 13, which is positioned in the radial direction R between the passage opening 17 for the shaft 12 and located on the smallest outer diameter of the outer contour of the base 16 groove 18 is positioned ,
    Due to the design of the end cover 13, it is possible to manufacture the same from a relatively inexpensive cast iron material. Such a cover made of a cast iron material can be manufactured easily and inexpensively.
    权利要求:
    Claims (10)
    [1]
    10 compressor rotor 11 bearing housing 12 shaft 13 end cap 14 retaining ring 15 piston ring 16 base body 17 passage opening 18 groove 19 groove 20 cooling channel 21 leakage groove 22 projection 23 compressor wheel contour claims
    1. end cap (13) for a compressor impeller (10) of an exhaust gas turbocharger, via which the air-conducting compressor impeller (10) of ölbeaufschlagten assemblies of the exhaust gas turbocharger is separable, with a through opening (17) for a shaft (12) having base body (16), characterized in that on the base body (16) at least one of the compressor impeller (10) zuwendbarer ring-like projection (22) is formed.
    [2]
    2. end cap according to claim 1, characterized in that the or each projection (22) rotates in the circumferential direction and extends, starting from the base body (16) in the axial direction.
    [3]
    3. end cover according to claim 1 or 2, characterized in that on the base body (16) a plurality of annular and concentric projections (22) are formed.
    [4]
    4. end cap according to claim 3, characterized in that an axial extent of the projections (22) is dimensioned such that free ends of the projections (22) each have a nearly identical distance to a the end cover zuwendbaren compressor wheel contour (23).
    [5]
    5. end cover according to claim 3 or 4, characterized in that viewed in the radial direction, a distance between each adjacent projections (22) at least equal to the radial thickness of the projections (22).
    [6]
    An exhaust gas turbocharger, comprising a compressor and a turbine, the compressor having a compressor impeller (10) with a compressor impeller shell, the turbine having a turbine impeller with a turbine impeller shell, the compressor impeller (10) and the turbine impeller being mounted in a bearing housing (11 ) are coupled, and wherein a cover (13) for the compressor impeller (10) the air-conducting compressor impeller (10) separated from Ölbeaufschlagten assemblies of the exhaust gas turbocharger, characterized in that at one a passage opening for a shaft (12) having Base body (16) of the end cover (13) at least one of the compressor impeller (10) facing, ring-like projection (22) is formed.
    [7]
    7. Exhaust gas turbocharger according to claim 6, characterized in that the or each projection (22) rotates in the circumferential direction and extends from the base body (16) in the axial direction of the compressor wheel (10).
    [8]
    8. Exhaust gas turbocharger according to claim 6 or 7, characterized in that on the base body (16) a plurality of the compressor impeller (10) facing, annular and to be concentric projections (22) are formed.
    [9]
    9. Exhaust gas turbocharger according to claim 8, characterized in that an axial extension of the projections (22) is dimensioned such that free ends of the projections (22) each have a nearly identical distance to the end cover facing the compressor wheel contour (23).
    [10]
    10. Exhaust gas turbocharger according to claim 8 or 9, characterized in that viewed in the radial direction, a distance between each adjacent projections (22) at least equal to the radial thickness of the projections (22).
    类似技术:
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    同族专利:
    公开号 | 公开日
    KR102127534B1|2020-06-26|
    KR20150018438A|2015-02-23|
    DE102013013235A1|2015-02-12|
    CN104454632A|2015-03-25|
    JP6486623B2|2019-03-20|
    CH708435A2|2015-02-13|
    JP2015034550A|2015-02-19|
    CN104454632B|2019-06-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4141106C2|1991-12-13|2001-10-04|Papst Licensing Gmbh & Co Kg|Radial fan|
    JP3253000B2|1995-07-28|2002-02-04|大豊工業株式会社|Ring seal device for turbocharger|
    GB9721434D0|1997-10-10|1997-12-10|Holset Engineering Co|Improvements in or relating to compressors and turbines|
    DE102006048784A1|2006-10-12|2008-04-17|Man Diesel Se|Compressor for a turbocharger and method for its cooling|
    DE102010038524B4|2010-07-28|2020-08-13|Man Energy Solutions Se|Turbo engine|
    JP2013533429A|2010-08-03|2013-08-22|ボーグワーナーインコーポレーテッド|Exhaust gas turbocharger|
    WO2012030783A2|2010-09-03|2012-03-08|Borgwarner Inc.|Turbocharger housing seal|
    DE112011103096T5|2010-10-27|2013-07-11|Borgwarner Inc.|turbocharger|
    DE102011010673A1|2011-02-08|2012-08-09|Voith Patent Gmbh|Housing for an exhaust gas turbocharger or a turbocompound system|
    GB2488593B|2011-03-04|2017-01-11|Cummins Ltd|Turbocharger assembly|
    WO2013106303A1|2012-01-13|2013-07-18|Borgwarner Inc.|Sealing system and turbocharger incorporating the same|DE102017208107A1|2017-05-15|2018-11-15|Man Diesel & Turbo Se|turbocharger|
    法律状态:
    2017-09-29| PCAR| Change of the address of the representative|Free format text: NEW ADDRESS: BELLERIVESTRASSE 203 POSTFACH, 8034 ZUERICH (CH) |
    2018-11-30| 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
    DE102013013235.5A|DE102013013235A1|2013-08-08|2013-08-08|End cover for a compressor impeller of an exhaust gas turbocharger and turbocharger|
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