• 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 turbocompressor having a shaft (10) mounted in a housing (11) for driving a compressor rotor; with an electric motor that drives the shaft (10). Bearings (12), via which the shaft (10) is mounted in the housing (11), are designed as plain bearings.
    公开号:CH714852A2
    申请号:CH00207/19
    申请日:2019-02-18
    公开日:2019-09-30
    发明作者:Bartholomä Klaus；Tomek Ondrej；Klima Jiri
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    E. Blum & Co. AG Patent and Trademark Attorneys VSP, Vorderberg 11 8044 Zurich (CH)
    CH 714 852 A2
    Description: The invention relates to a turbocompressor.
    Internal combustion engines with exhaust gas recirculation are familiar to the expert addressed here. In such internal combustion engines, it is known to remove exhaust gas which leaves the internal combustion engine from an exhaust branch of the internal combustion engines and to lead it to a charge air tract of the internal combustion engine and then via a so-called exhaust gas recirculation fan of the exhaust gas recirculation, which is also referred to as an EGR blower to mix the exhaust gas with the charge air to be supplied to the cylinders of the internal combustion engine.
    Exhaust gas recirculation blowers or EGR blowers are typically designed as turbo compressors that compress the exhaust gas to a defined pressure. For this purpose, a turbocompressor of an exhaust gas recirculation of an internal combustion engine comprises at least one compressor stage, wherein the or each compressor stage, namely a rotor thereof, can be driven via a shaft mounted in a housing of the turbocompressor. An electric motor drives the shaft and drives the or each compressor rotor of the or each compressor stage via the shaft.
    Known in practice turbocompressors an exhaust gas recirculation of an internal combustion engine use bearings to store the shaft which is driven by the electric motor and which serves to drive the or each compressor rotor in the housing. Such rolling bearings have an inner bearing ring, an outer bearing ring and rolling elements positioned between the inner bearing ring and the outer bearing ring.
    Proceeding from this, the present invention has for its object to provide a novel turbo compressor. This object is achieved by a turbocompressor according to claim 1. According to the invention, bearings via which the shaft is mounted in the housing are designed as plain bearings. With the present invention, it is proposed for the first time to mount the shaft of a turbocompressor via slide bearings in the housing. This ensures a more compact design. Furthermore, an advantageous damping effect can be provided for the shaft. It is also possible to operate the turbocompressor in the region of its natural frequency.
    According to an advantageous development, a radially outer damping oil film is formed between a bearing ring of the slide bearing and the housing. A radially inner load transmission and damping oil film is also formed between the bearing ring of the slide bearing and the shaft. This enables optimal damping and load transfer.
    According to an advantageous development, the bearing ring of the plain bearing is arranged in a recess in the housing, the bearing ring of the plain bearing being supported only on one axial end on the housing. This also serves to provide optimal damping and load transfer.
    According to an advantageous development, the electric motor drives the shaft at a speed between 10,000 revolutions per minute and 50,000 revolutions per minute. The invention can be used particularly advantageously in the case of such high-speed shafts of turbocompressors of exhaust gas recirculation.
    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:
    Fig. 1 shows an axial section through a detail of a turbocompressor.
    The invention relates to a turbocompressor. A turbo compressor is also called a turbo compressor.
    In particular, the invention relates to a turbo compressor of an exhaust gas recirculation of an internal combustion engine. Such a turbocompressor serves to convey and compress exhaust gas which is removed from an exhaust tract of an internal combustion engine and is conveyed with the aid of the turbocompressor in the direction of a charge air tract of the internal combustion engine.
    A turbocompressor has a housing 11 with a shaft 10 mounted in a housing 11. The shaft 10 can be driven by an electric motor. The shaft 10 serves to drive at least one compressor rotor of at least one compressor stage of the turbocompressor. The turbocompressor can have a plurality of compressor stages, each with a compressor rotor, with the shaft 10 then driving all the compressor rotors.
    Fig. 1 shows a section of the shaft 10 together with a portion of the housing 11 of the turbocompressor.
    In the sense of the present invention, it is proposed that the shaft 10 is mounted in the housing 11 via bearings designed as a slide bearing 12.
    Such a plain bearing 12 has a single bearing ring 13. A radially inner gap 14 is formed between the bearing ring 13 and the shaft 10, in which an inner load transmission and damping oil film 15 can be formed.
    CH 714 852 A2 A radially outer gap 16 is formed between the bearing ring 13 of the slide bearing 12 and the housing 11, in that a radially outer damping oil film 17 can form.
    The radially outer damping oil film 17 in the gap 16 between the bearing ring 13 of the slide bearing 12 and the housing 11 is used exclusively to provide a damping effect via a corresponding pinch oil film 17th
    The load transmission and damping oil film 15 between the bearing ring 13 of the plain bearing 12 and the shaft 10 also serves to provide a damping effect of the load transmission.
    The bearing ring 13 of the plain bearing 12 is positioned in a recess 18 of the housing 11. 1 that the bearing ring 12 is supported only on one axial end 19 on the housing 11 of the turbocompressor.
    The shaft 10 of the turbocompressor of the exhaust gas recirculation is preferably driven by the electric motor at a speed between 10,000 revolutions per minute (rpm or rpm) and 50,000 revolutions per minute (rpm or rpm). With such high-speed shafts 10, the slide bearing of the turbocompressor according to the invention is used particularly advantageously.
    Reference symbol list [0021]
    wave
    casing
    bearings
    bearing ring
    gap
    Load transmission and damping oil film
    gap
    Damping oil film
    权利要求:
    Claims (4)
    [1]
    18 recess
    19 axial end
    claims
    1. turbocompressor, with a shaft (10) mounted in a housing (11) to drive a compressor rotor;
    with an electric motor that drives the shaft (10); characterized in that
    Bearings (12), via which the shaft (10) is mounted in the housing (11), are designed as plain bearings.
    [2]
    2. Turbo compressor according to claim 1, characterized in that a radially outer damping oil film (17) is formed between a bearing ring (13) of the sliding bearing (12) and the housing (11).
    [3]
    3. Turbo compressor according to claim 1 or 2, characterized in that a radially inner load transmission and damping oil film (15) is formed between a bearing ring (13) of the sliding bearing (12) and the shaft (10).
    [4]
    4. Turbo compressor according to one of claims 1 to 3, characterized in that a bearing ring (13) of the sliding bearing (12) is arranged in a recess (18) in the housing (11), the bearing ring (13) of the sliding bearing (12) is supported exclusively on one axial end (19) on the housing (11).
    类似技术:
    公开号 | 公开日 | 专利标题
    CH714852A2|2019-09-30|Turbo compressors.
    DE4234739C1|1993-11-25|Gearbox multi-shaft turbo compressor with feedback stages
    DE102009038772A1|2011-03-03|Exhaust gas turbine for a turbo-compound system
    EP1394365A1|2004-03-03|Turbocharger shaft sealing
    DE2416639A1|1974-10-17|ROTATING MOUNTING ARRANGEMENT
    EP3091179B1|2021-06-30|Rotor assembly for a fluid flow engine and compressor
    DE102015122956A1|2016-07-28|Turbocharger with a hybrid axlebox system
    DE102015207341B4|2019-02-14|Compressor and motor vehicle
    DE102015114935A1|2016-03-24|Bush for a wastegate of a turbocharger
    DE69817638T2|2004-06-17|Compression system for a turbomachine
    EP0391902A1|1990-10-17|Mechanically driven charger for internal combustion engines.
    WO2009130262A1|2009-10-29|Carrier ring of a conducting device with sealing air channel
    DE4327506A1|1994-02-24|Turbo vacuum pump assembly - has housing with suction and delivery apertures and contg. evacuating pump which compresses gas sucked in through suction aperture
    DE102014218539A1|2016-03-17|Exhaust gas turbocharger of an internal combustion engine
    DE102016212552A1|2018-01-11|Electric compressor with vibration-damped, compact storage
    CH714519B1|2021-11-30|Exhaust gas recirculation fan and internal combustion engine.
    DE2409857A1|1975-09-11|TURBOMOLECULAR VACUUM PUMP WITH AT LEAST PARTIAL BELL-SHAPED ROTOR
    CH714849A2|2019-09-30|Turbo compressors.
    DE202015102240U1|2015-07-22|Compressor and motor vehicle
    DE102015207343A1|2016-10-27|Compressor and motor vehicle
    DE102019002560A1|2020-10-08|Piston ring for sealing a running gear of an exhaust gas turbocharger
    DE102014226696A1|2016-06-23|Pre-compressor device, retrofit kit and aircraft engine
    DE102019219910A1|2020-07-02|Electric compressor
    DE102019122643A1|2021-02-25|Exhaust gas recirculation fan and internal combustion engine
    DE202018001739U1|2018-10-05|Sheath nozzle for compressor
    同族专利:
    公开号 | 公开日
    CN110296097A|2019-10-01|
    KR20190111793A|2019-10-02|
    CH714852B1|2022-01-31|
    DE102018106944A1|2019-09-26|
    US20190293080A1|2019-09-26|
    RU2019108050A|2020-09-21|
    JP2019167954A|2019-10-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JP3281100B2|1993-03-29|2002-05-13|栃木富士産業株式会社|Supercharger|
    WO2000079117A1|1999-06-23|2000-12-28|Caterpillar Inc.|Exhaust gas recirculation system|
    US6997686B2|2002-12-19|2006-02-14|R & D Dynamics Corporation|Motor driven two-stage centrifugal air-conditioning compressor|
    US7927464B2|2007-07-24|2011-04-19|Mechanical Equipment Company, Inc.|Vapor compression distillation system including an integrated motor/compressor unit|
    JPWO2013080600A1|2011-12-01|2015-04-27|トヨタ自動車株式会社|Internal combustion engine with a supercharger|
    DE112013001573T5|2012-04-23|2014-12-04|Borgwarner Inc.|Turbocharger with aluminum bearing housing|
    CN104343719B|2013-07-23|2016-12-28|沈阳透平机械股份有限公司|The double oil-film damping bearing of a kind of elastic underlay sheet structure and processing method thereof|
    US20170175808A1|2014-04-11|2017-06-22|Borgwarner Inc.|Multi-piece journal bearing|
    DE112015002059T5|2014-04-30|2017-01-12|Borgwarner Inc.|Reversible slide bearing with spiral groove for use in standard and counterbalancing turbochargers|
    EP3208468A1|2016-02-22|2017-08-23|Siemens Turbomachinery Equipment GmbH|Radial compressor|
    DE102016210948A1|2016-06-20|2017-12-21|Continental Automotive Gmbh|Electric compressor with compact storage|
    US10100785B2|2016-06-30|2018-10-16|Borgwarner Inc.|Compressor stage EGR injection|
    DE102016222786A1|2016-11-18|2018-05-24|Siemens Aktiengesellschaft|turbomachinery|
    US10495097B2|2016-12-12|2019-12-03|Garrett Transporation I Inc.|Turbocharger assembly|
    DE102018106900A1|2018-03-22|2019-09-26|Man Energy Solutions Se|Turbo compressor|US11118596B2|2014-12-29|2021-09-14|Boulden Company, Inc.|Wear ring for use in a pump|
    US10724532B2|2014-12-29|2020-07-28|Boulden Company, Inc.|Wear ring for use in a pump|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102018106944.8A|DE102018106944A1|2018-03-23|2018-03-23|Turbo compressor|
    [返回顶部]