• 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:
    The present invention relates to an electric compressor (1) comprising at least one wheel (3) compressor driven by an electric motor (5), the electric motor (5) for rotating a shaft (6) of the electric compressor via bearings (7, 7 '), and comprising at least a portion of a cooling circuit (10), traversed by a cooling fluid, arranged around the electric motor (5), the fluid flowing through the circuit (10) of cooling is oil to lubricate the bearings (7, 7 ').
    公开号:FR3060896A1
    申请号:FR1662811
    申请日:2016-12-20
    公开日:2018-06-22
    发明作者:Nicolas Martin；Gregory Hodebourg
    申请人:Valeo Systemes de Controle Moteur SAS；
    IPC主号:
    专利说明:

    © Publication number: 3,060,896 (to be used only for reproduction orders) (© National registration number: 16 62811 ® FRENCH REPUBLIC
    NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY
    COURBEVOIE © Int Cl 8 : H 02 K 9/19 (2017.01), F 04 D 29/58
    A1 PATENT APPLICATION
    ©) Date of filing: 20.12.16. © Applicant (s): VALEO CONTROL SYSTEMS (30) Priority: ENGINE Simplified joint-stock company - FR. @ Inventor (s): MARTIN NICOLAS and HODEBOURG GREGORY. (43) Date of public availability of the request: 22.06.18 Bulletin 18/25. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ® Holder (s): VALEO CONTROL SYSTEMS related: ENGINE Simplified joint-stock company. ©) Extension request (s): © Agent (s): VALEO CONTROL SYSTEMS ENGINE Simplified joint-stock company.
    ELECTRIC COMPRESSOR WITH COOLING CIRCUIT.
    FR 3 060 896 - A1 (3j) The present invention relates to an electric compressor (1) comprising at least one compressor wheel (3) driven by an electric motor (5), the electric motor (5) allowing the rotation of '' a shaft (6) of the electric compressor via bearings (7, 7d, and comprising at least part of a cooling circuit (10), traversed by a cooling fluid, arranged around the electric motor (5), the fluid running through the cooling circuit (10) is oil used to lubricate the bearings (7, 7j.

    .
    ELECTRIC COMPRESSOR WITH COOLING CIRCUIT
    The present invention relates to the field of electric compressors, and more particularly an electric supercharger for a motor vehicle with a cooling circuit and improved bearings.
    In the context of the invention, an electric compressor is a device, used for supercharging a heat engine, operating with an electric motor driving a compressor wheel and comprising an electronic assembly.
    The electric compressor is placed on the air intake line of an internal combustion engine, in addition for example to a turbocharger. The electric compressor plays the same role as the turbocharger, namely to increase the pressure of admission of the fresh gases into the engine, but is used in particular during transient phases to alleviate the problems of response time of the turbocharger.
    Currently, such a compressor includes bearings, allowing the rotation of a compressor wheel via a shaft, the lubrication of which is carried out by a predefined quantity of grease for the total lifetime of the bearing. This amount of grease can be a limiting factor in the life of the bearings.
    In addition, in such devices, it is necessary to cool the electric motor but also the electronic assembly.
    Current compressors do not allow optimum cooling. There is therefore a need to improve this cooling.
    The present invention therefore aims to overcome one or more of the drawbacks of the devices of the prior art by proposing an electric compressor whose lubrication of the bearings and the cooling circuit is improved, thus making it possible to optimize the cooling of the electronics. and the reliability of the bearings.
    For this, the present invention provides an electric compressor comprising at least one compressor wheel driven by an electric motor, the electric motor allowing the rotation of a shaft of the electric compressor via bearings, and comprising at least part of a cooling circuit, traversed by a cooling fluid, arranged around the electric motor, the fluid traversing the cooling circuit is oil making it possible to lubricate the bearings.
    The oil circulating in the cooling circuit has the advantage that it can also be used to lubricate the bearings of the electric compressor, which allows optimized use of engine oil.
    According to one embodiment of the invention, the cooling circuit comprises at least one conduit for communication with the bearings.
    According to one embodiment of the invention, the cooling circuit comprises an oil inlet pipe.
    According to one embodiment of the invention, the cooling circuit comprises an oil discharge pipe.
    According to one embodiment of the invention, the electric motor is a permanent magnet or variable reluctance motor.
    The invention also relates to the use of the electric compressor according to the invention in an internal combustion or fuel cell engine.
    Other objects, characteristics and advantages of the invention will be better understood and will appear more clearly on reading the description made below, with reference to the appended figure, given by way of example, which is a representation schematic section showing an electric compressor according to the invention.
    The present invention relates to an electric compressor 1.
    In the context of the invention, the expression “electric compressor 1” means an air compressor, volumetric or not and for example centrifugal or radial, driven by an electric motor, with the aim of supercharging a heat engine. According to one embodiment of the invention, the electric motor is an asynchronous DC or alternating current motor, or any type of electric motor of the same type.
    More specifically, according to one embodiment of the invention, the electric motor is a variable reluctance motor (also called SRM machine for Switched Reluctance Motor according to English terminology).
    According to another embodiment of the invention, the motor is a permanent magnet motor.
    Figure 1 illustrates an example of an electric compressor 1. The electric compressor 1 comprises at least one electric motor 5, and a compressor wheel 3. The electric motor 5 is arranged in one in the housing 4 of the compressor 1, or compressor body. The electric motor 5 comprises at least one rotor 52 and a stator 51. The electric motor 5 allows the rotation of a shaft 6 of the electric compressor via bearings 7, 7 '. The shaft 6 thus rotates the wheel 3 of the compressor 1. More precisely, one end of the shaft 6 is driven in rotation by the electric motor, and another end of the shaft 6 rotates the wheel 3 of the compressor .
    According to one embodiment of the invention, the bearings 7, 7 ′ are arranged on either side of the electric motor 5 relative to the axis X of the shaft 6.
    According to another embodiment of the invention, the bearings 7, 7 'are arranged on the same side with respect to the axis X of the shaft 6.
    According to one embodiment of the invention, the compressor 1 conventionally comprises a scroll 2 allowing the passage of air from the compressor 1. The wheel 3 of the compressor is disposed in the scroll 2.
    According to one embodiment of the invention, the wheel of the compressor 1 is a paddle wheel.
    According to one embodiment of the invention, the compressor 1 comprises an electronic assembly 9 making it possible to control the electric compressor 1. In the context of the invention, the term “electronic assembly 9” means power and / or control electronics. More precisely, the electronic assembly is composed of the electronic control card, the power module, at least one filtering capacity, at least one inductance.
    According to one embodiment of the invention, at least part of the electronic assembly 9 is arranged at one end of the shaft 6 opposite the end where the wheel 3 is located, illustrated in FIG. 1.
    According to one embodiment of the invention, at least a part of the electronic assembly is arranged at the rear of the wheel 3, between the wheel 3 and the electric motor 5, not illustrated.
    In the context of the invention, the electric compressor 1 includes a cooling circuit 10.
    According to one embodiment of the invention, at least part of the cooling circuit 10 is arranged around the electric motor 5. More specifically, at least part of the cooling circuit 10 is disposed between the electric motor 5 and the housing 4 of the compressor.
    The cooling circuit 10 is arranged at the rear face of the electronic assembly, that is to say the one facing the interior of the compressor 1.
    According to one embodiment of the invention, the cooling circuit 10 is formed by a cooling housing independent of the housing 4 of the compressor.
    According to one embodiment of the invention, the cooling circuit 10 has any shape allowing it to cool the essential elements of the electric compressor such as the electronics and the electric motor, while making it possible to optimize the dimensions of the electric compressor.
    The cooling circuit 10 is traversed by a fluid which, in the context of the invention, is oil.
    According to one embodiment of the invention, the oil circulating in the cooling circuit 10 is that of the vehicle engine oil circuit in which the electric compressor 5 is arranged.
    The oil circulating in the cooling circuit 10 has the advantage that it can also be used to lubricate the bearings 7, 7 'of the electric compressor 1, which allows optimized use of the engine oil.
    For this, the cooling circuit 10 comprises at least one conduit 11 for communication with the bearings 7.
    This communication conduit 11 makes it possible to bring and evacuate the oil in the bearings 7, 7 '.
    According to one embodiment of the invention, the lubrication of the bearings 7, 7 'is thus carried out by oil circulation or by oil jet. The pressure is for example less than 4 bars.
    In all cases, the oil is brought to one side of the bearing, passes through it, and flows to the opposite side, it is then, for example, filtered and cooled, then returned to the cooling circuit 10.
    According to one embodiment of the invention, the cooling circuit 10 includes an oil inlet pipe 12. This oil inlet duct 12 makes it possible to supply the cooling circuit with oil
    According to one embodiment of the invention, the cooling circuit 10 comprises a pipe 13 for discharging oil. This oil evacuation duct 13 makes it possible to evacuate the oil to the oil circuit, for example from the engine of a vehicle.
    Such a configuration optimizes the cooling of the electronic assembly 9 and of the electric motor 5 and makes it possible to reduce the size of the compressor.
    A compressor according to the invention is used in a combustion engine, and for example an internal combustion or fuel cell engine of a motor vehicle
    The scope of the present invention is not limited to the details given above and allows embodiments in many other specific forms without departing from the scope of the invention. Consequently, the present embodiments should be considered by way of illustration, and can be modified without however departing from the scope defined by the claims supported by the description.
    权利要求:
    Claims (6)
    [1" id="c-fr-0001]
    1. Electric compressor (1) comprising at least one compressor wheel (3) driven by an electric motor (5), the electric motor (5) allowing the setting in
    5 rotation of a shaft (6) of the electric compressor via bearings (7, 7 '), and comprising at least part of a cooling circuit (10), traversed by a cooling fluid, arranged around the engine (5 ) electric, characterized in that the fluid passing through the cooling circuit (10) is oil used to lubricate the bearings (7, 7 ').
    10
    [2" id="c-fr-0002]
    2. An electric compressor (1) according to claim 1, in which the cooling circuit (10) comprises at least one conduit (11) for communication with the bearings (7, 7 ').
    [3" id="c-fr-0003]
    3. An electric compressor (1) according to one of claims 1 to 2, in which the cooling circuit (10) comprises a conduit (12) for oil supply.
    15
    [4" id="c-fr-0004]
    4. Electric compressor (1) according to one of claims 1 to 3, wherein the cooling circuit (10) comprises a conduit (13) for discharging oil.
    [5" id="c-fr-0005]
    5. Electric compressor (1) according to one of claims 1 to 4, wherein the electric motor (5) is a permanent magnet motor or variable reluctance.
    [6" id="c-fr-0006]
    6. Use of the electric compressor (1) according to one of claims
    20 above in an internal combustion or fuel cell engine.
    1/1 ο / -
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR3060896B1|2019-11-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP1841043A1|2006-03-29|2007-10-03|Moteurs Leroy-Somer|Overmould machine and corresponding manufacturing method|
    JP2008082623A|2006-09-27|2008-04-10|Ebara Corp|Compression type refrigerating device|
    US20140292117A1|2013-03-28|2014-10-02|Hyundai Mobis Co., Ltd.|Axial flux permanent magnent|
    DE102013226851A1|2013-12-20|2015-06-25|Siemens Aktiengesellschaft|Rotary dynamoelectric machine with a cooling system|
    DE102016105446A1|2015-03-27|2016-09-29|Kabushiki Kaisha Toyota Jidoshokki|compressor|WO2020001819A1|2018-06-25|2020-01-02|Ebm-Papst St. Georgen Gmbh & Co. Kg|Electric motor|
    WO2021227262A1|2020-05-11|2021-11-18|山东省章丘鼓风机股份有限公司|Permanent magnet direct drive slurry pump having water cooling circulation structure|
    EP3940239A1|2020-07-16|2022-01-19|BMTS Technology GmbH & Co. KG|Turbomachine with a cooling channel|
    法律状态:
    2018-01-02| PLFP| Fee payment|Year of fee payment: 2 |
    2018-06-22| PLSC| Publication of the preliminary search report|Effective date: 20180622 |
    2018-12-31| PLFP| Fee payment|Year of fee payment: 3 |
    2019-12-31| PLFP| Fee payment|Year of fee payment: 4 |
    2020-12-31| PLFP| Fee payment|Year of fee payment: 5 |
    2021-12-31| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1662811A|FR3060896B1|2016-12-20|2016-12-20|ELECTRIC COMPRESSOR WITH COOLING CIRCUIT|
    FR1662811|2016-12-20|FR1662811A| FR3060896B1|2016-12-20|2016-12-20|ELECTRIC COMPRESSOR WITH COOLING CIRCUIT|
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