• 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:
    An air supply device according to the invention is particularly used in a heating, ventilation and / or air conditioning system of a motor vehicle. The air delivery device comprises a rotor (16) and a stator (14). The stator is mounted on a support means (10) arranged in projection of a plate (12), metallic and electrically connected to an electrical ground. And a screen (60) is disposed between the rotor and the stator, said screen being also electrically connected to the electrical ground.
    公开号:FR3036889A1
    申请号:FR1554868
    申请日:2015-05-29
    公开日:2016-12-02
    发明作者:Pascal Guigou；Geoffroy Capoulun；Xavier Rousseil；Jonathan Fournier；Goff Morgan Le
    申请人:Valeo Systemes Thermiques SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to the field of electric motors, and in particular to that of motors with electronic commutation. BACKGROUND OF THE INVENTION More specifically, it relates to air supply devices in motor vehicles comprising such electric motors.
    [0002] An air supply device equipped with an electric motor according to the invention is, for example, used in a ventilation system, heating and / or air conditioning of a motor vehicle. Electronically commutated electric motors, or brushless direct current motors (also known by the English name of "brush less"), comprise a rotor and stator assembly, each of these components carrying electromagnetic elements whose interaction generates the displacement of the rotor relative to the stator. The rotor and the stator are mounted independently of one another in said motor, and it should be ensured that the relative positioning of these two components is correct for optimum operation of the motor. On the other hand, the current switching in the stator coils generates electric fields which can disturb the operation of other electronic devices arranged nearby. The present invention is in this context and it aims to provide an electric motor and an associated air pulse device that allow in particular to contain at least a portion of the electromagnetic radiation generated inside the electric motor. By air delivery device, there is a device for sucking and / or blowing air. The air delivery device according to the invention is of the type comprising a ventilation wheel driven in rotation by an output shaft of an electronically commutated electric motor, with the motor consisting of at least one rotationally integral rotor. of the output shaft and adapted to rotate about a stator, which is mounted on a support means arranged projecting from a platen, which is disposed on one side of the stator, opposite the side or side of the stator. extends said rotor. The stator has an annular shape with a central wall which delimits the contour of an internal bore through which said output shaft passes, and it further comprises a plurality of teeth radially arranged in a star pattern from the outer face of said central wall and each carrying a magnetic coil generating an electromagnetic field. In particular, it is provided that said teeth have at their distal end, opposite the central wall, metal plates which extend substantially parallel to the axis of the output shaft, and each metal plate is advantageously arranged so that a passage zone for winding the coil is formed between two adjacent metal plates. The rotor, arranged around the stator, carries at least one permanent magnet whose interaction with said current-fed coils generates a rotational movement of the rotor around the stator. According to the invention, a screen is provided, transversely to the output shaft, between the rotor and the stator, said screen being electrically connected to the plate which is electrically connected to the electrical ground. This arrangement allows the formation of a conductive enclosure connected to the electrical mass, and thus maintained at a fixed potential, so as to form a shield capable of confining the electric field created by the current switching in the stator coils generates electric fields According to a first series of characteristics, taken alone or in combination, specific to the electrical connection of the stator to the support means, it can be provided that the screen is electrically connected to the platinum by means axially passing through the stator, in particular in the central wall thereof, and - the screen extends radially over the entire diameter of the stator. ; - The screen has a substantially flat annular shape, pierced at its center with a bore to be traversed by the motor output shaft; 3036889 3 - the screen is fixed on the stator, by at least one fixing screw adapted to cooperate with a hole formed in the stator; the internal bore of the stator has two distinct parts by modifying the internal diameter of the central wall delimiting said internal bore, a first portion of larger diameter extending from the edge arranged axially in the vicinity of the screen up to a shoulder edge defining a second portion of smaller diameter, said hole cooperating with the fixing screw being formed in the shoulder edge; the screen comprises at least one tab which extends substantially perpendicularly to the edge delimiting the central bore of the screen, and whose free end has a bearing edge, so that the tab comes into contact with the edge of the screen; shoulder by this support edge when the screen is in the stator covering position; the support edge is arranged to allow the fixation screw body to pass through the fixing hole and to be pressed against the shoulder edge by the screw head; three fixing holes are regularly distributed at 1200 around the periphery of the central wall delimiting the internal bore of the stator; the screen is connected to the electrical ground via said at least one fixing screw which extends substantially parallel to the motor output shaft, passing through said stator to engage said platen; the stator has at least one axial boss disposed projecting from the inner face of the central wall defining the internal bore of said stator, said boss being pierced axially from the fixing hole capable of being traversed by the at least one fixing screw; ; the screen is made of an electrically conductive material, for example aluminum; - The output shaft of said motor is rotatably mounted within the barrel by means of bearings; 3036 889 4 - the platen forms a heat sink carrying an electronic control board, in particular the supply of the stator coils, the electronic control board being then disposed on the face of the plate oriented opposite the barrel .
    [0003] The present invention also relates to a heating, ventilation and / or air conditioning system of a motor vehicle comprising at least one air-blowing device as described above. Other features and advantages of the invention will appear on reading the detailed description of an embodiment which follows and for the understanding of which reference will be made to the appended drawings in which: FIG. 1 is a representation exploded in perspective of an air supply device according to the invention; FIG. 2 diagrammatically illustrates an air pumping device comprising, according to the invention, means for axial confinement of the electromagnetic radiations; and FIG. 3 is a perspective view of a stator and axial confinement means for the electromagnetic radiations equipping an electric motor in an air-blowing device according to FIG. 2.
    [0004] An air supply device, which makes it possible to suck and blow air, 1 comprises at least one electronically commutated electric motor 2, able to drive in rotation a ventilation wheel 4, of the finned type here. 6, via an output shaft 8 of the electric motor. The device further comprises at least one support means 10 of the electric motor 2, and a plate 12 on which is fixed said support means 10 and an electronic control card 13 of said electric motor 2, and which forms a cooling means components of said device. The electric motor 2 mainly comprises a stator 14 and a rotor 16 carrying the output shaft 8 capable of driving the ventilation wheel 4. The stator 14 is made integral with the support means 10, and the rotor 16 is arranged around the 3036889 5 stator 14 to be rotated under the effect of the magnetic fields generated by the winding and the magnets associated with the rotor and the stator. As can be seen in FIG. 3, the stator 14 has an annular shape with a central wall 18 which delimits the contour of an internal bore 20. The central wall 18 has an internal face 22 turned towards the internal bore 20 and an outer face 24 extended by a plurality of teeth 26 arranged radially in a star. The internal bore 20 of the stator 14 has distinct parts by changing the internal diameter of the central wall 18 delimiting said internal bore 20, larger diameter portions extending from the axial end edges of the central wall to to a shoulder edge 28 delimiting a central portion of the internal bore 20 of smaller diameter. In this central part, the stator 14 has at least one axial boss 30 disposed projecting from the inner face, said boss being pierced axially with a fixing hole 32 as will be described below. The teeth 26 are formed by a straight wall, a proximal radial end of which is integral with the central wall 18 of the stator 14 and of which a free distal radial end is extended by a plate 34 which extends over the entire height of the stator 14 and which is wider than the right wall, so as to form a stop wall for the winding to be surrounded around the right wall of the teeth 26. Each plate 34 is covered opposite the right wall by a superposition of different layers of sheet metal glued to each other. The stator 14 comprises an excitation winding composed of several phases, each comprising at least one wire winding 36, whose outputs 25 are electrically connected to supply means not shown here (only the connection means 38 being visible on Figure 3). In a particular embodiment, the stator comprises twelve teeth wound in three-phase. The winding of wire is made around the teeth, each tooth carrying a winding element. As illustrated, the plates 34 carried at the end of the teeth and the metal layers adhered thereto are dimensioned to provide a passage zone 40 between them capable of leaving room for the winding of the wire around the teeth. The rotor 16 has a bell shape, with an annular ring 42 and a closure wall 44 disposed at one end of said ring. The closure wall may take a flat shape substantially perpendicular to the axis of the crown or a curved shape in clearance of the crown, and it carries at its center the motor output shaft 8. The ring 42 has a diameter greater than the outer diameter of the stator, so that the rotor can come into recovery of the stator. The ring 10 has an inner face which is turned towards the stator in this overlapping position, and at least one permanent magnet 46 is disposed on this inner face of the rotor ring. When the motor is assembled, the stator 14 is disposed in the body of the rotor 16 delimited by the ring gear 42. The rotor and the stator are thus arranged so that the permanent magnet 46 carried by the rotor 16 is constantly arranged in the field magnetic generated by the coils of the stator 14 when they are fed with current, so as to generate a rotational movement of the rotor around the stator. In the air supply device 1 comprising the electric motor 2 according to the invention, the stator 14 and the rotor 16 are arranged so that the closing wall 44 of the rotor is turned towards the ventilation wheel 4 and that the stator 14 is arranged facing plate 12. The support means 10 is fixed on a first face 48 of the plate 12, while the electronic card 13 is fixed on a second opposite face 50 of this plate. It is understood that in this way, when the components of the device are mounted, the electronic card is turned away from the electric motor. The plate is mechanically fixed relative to the vehicle structure, here via a frame 54 shown in Figure 1, and is electrically connected to the mass of the electronic member. The plate 12 has a discoidal shape in FIG. 1, but it will be understood that it may take other forms, for example rectangular, square, elliptical, etc.
    [0005] The plate 12 extends in a plane substantially perpendicular to the axis of revolution of the internal channel of the support means 10. The support means, substantially cylindrical, has an inner channel 52 opening substantially in the center of the plate. In FIG. 2, it is understood that the support means is capable of being housed in the internal bore 20 of the stator 14 and to receive the motor output shaft 8 integral with the rotor 16, so that this support means 10 ensures the correct positioning of the rotor 16 relative to the stator 14. The support means can be fixed to the plate by various means including welding means.
    [0006] Preferably, the plate 12 is made of metal. Thus, the plate acting as heat sink can effectively cool the electronic member by thermal conduction. In addition, the fact that the plate is made of materials of high electrical conductivity and that it is connected to the mass of the electronic member, can block electromagnetic radiation 15 emitted by the electronic member, these radiation can disturb the operation of the electric motor. Preferentially, the plate is made of aluminum, so that one associates for these parts of the characteristics of lightness and good thermal conduction. As is particularly visible in FIG. 2, the stator 14 is fixed on the support means 10 and the rotor 16 is arranged to rotate around the stator 14. In particular, the stator is arranged around the support means, being in contact with the outer face of the barrel that forms said support means 10, while the rotor 16 is received, via the output shaft 8 which it is integral, in the inner channel 52 of the support means 10 The power supply of the coil leads creates magnetic fields 56, exemplified for a winding around a tooth in Fig. 2, which forces rotation of the driven rotor under the effect of the magnet. permanent 46 he wears. This results in a drive of the output shaft 8 of the motor as shown is carried by the rotor 16 and rotatably mounted within the inner channel 52 of the support means 10 via bearings. Two bearings 58, 59 are inserted in the internal channel 52 of the support means 10 to serve as a rotation guide to the output shaft 8 of the driven motor 3036889 8 also rotated by the rotor 16. These bearings may be bearings ball, as schematically illustrated, but it will be understood that they could take the form of roller bearings, needles, or other ... The ventilation wheel 4 of the air supply device 1 is secured to 5 the free end of the output shaft 8 of the motor which extends opposite the stator 14 and the plate 12, and it comprises, disposed at its periphery, a plurality of fins 6. The rotation of the rotor rotates the wheel which contributes to producing pulsed air through the fins. It is particularly notable according to the invention that the electric motor 2 10 formed by the rotor 16 and the stator 14 further comprises containment means to prevent the propagation of electromagnetic radiation outside the engine and the drive device. air. In particular, the motor comprises axial confinement means, that is to say means making it possible to prevent propagation along the axis of the output shaft of the motor of these electromagnetic radiations. A particular embodiment will now be described in that the axial confinement means consist of the presence of an additional screen disposed between the rotor and the stator, this screen being made of a material with a high conductivity, in particular aluminum, and electrically connected to the ground.
    [0007] In FIG. 2, the motor 2 comprises a screen 60, arranged transversely to the output shaft 8, between the stator 14 and the rotor 16, to form means of axial confinement of the electromagnetic radiations. In order to form an effective means of confinement, the screen 60 extends transversely over the entire diameter of the stator.
    [0008] As illustrated in FIG. 3, the screen 60 may be provided with a substantially flat annular shape pierced at its center by a bore 62 to be traversed by the output shaft of the motor which extends between the rotor and the stator. The screen 60 is fixed on the stator 14 substantially in the center of the screen. And the fastening means provided, by screwing, further allow the grounding of this screen 60. For this purpose, the screen 60 comprises at least one tab 66 which extends substantially perpendicularly the edge delimiting the central bore 62 of 3036889 9 the screen. The free end of this tab has a bearing edge 68 folded perpendicularly to the rest of the tab, to come into contact with the stator, and more particularly the shoulder edge 28 of the internal bore 20 of the stator 14, when the Screen 60 is in the overlapping position of this stator 14. The screen is angularly arranged so that the support edge 68 of this tab is arranged around an attachment hole 32 made in the thickness of the stator. The bearing edge 68 is arranged to let the body of a fastening screw 70, which extends substantially parallel to the motor output shaft, for the insertion of this screw into the corresponding fixing hole 32, and to be pressed against the shoulder edge 28 by the screw head. As illustrated, the screen 60 comprises three fastening tabs 66, regularly distributed at 120 ° around the perimeter of the central bore of the screen, and there are provided as many fixing holes 32 for the screen to be pressed against the stator by three fixing screws 70.
    [0009] Advantageously, it is intended to use the fixing screws 70 for the grounding of the screen 60, this grounding being necessary so that the screen forms part of an electric field shielding able to confine electromagnetic radiation. As shown diagrammatically in FIG. 2, the screen 60 is grounded by means of at least one of the fixing screws 70, which for this purpose passes through the stator 14 to engage the Another side of the stator, on the plate 12. This fastening screw 70 passes through a smooth mounting hole made through the stator 14 and it engages in a threaded hole 72 made in the body of mass. It is understood that each of the three fastening screws may have such an arrangement, or that only one of the fastening screws 70 passes through the stator 14 to engage the plate 12, the other two fastening screws being shorter than to cooperate with a fastening hole 32 threaded in the body of the stator. The electrical connection of the screen and its grounding is done through the metal plate 12, the at least one metal fixing screw 70 engaged in the plate, and the contact between the tab 66 of the screen and the screw head.
    [0010] The foregoing description aims to explain how the invention makes it possible to achieve the objectives that it has set itself, and in particular to propose an air-blowing device that confines electromagnetic radiation, by developing means of containment simple to manufacture, easy to assemble and particularly effective. However, the invention is not limited to air pumping devices according to the embodiments explicitly described with reference to FIGS. 1 to 3, it being understood that variant embodiments could be implemented without departing from the context of the invention. the invention, since an axial confinement of the electromagnetic radiation is made possible by the grounding of a metal screen disposed between the rotor and the stator of an electric motor, in particular with electronic commutation.
    权利要求:
    Claims (5)
    [0001]
    REVENDICATIONS1. An air-thrust device comprising an electronically commutated electric motor (2), said motor comprising a rotor (16) and a stator (14) mounted on a support means (10) arranged in a projection of a plate (12) , characterized in that a screen (60) is disposed between the stator (16) and the rotor (14), said screen (60) being electrically connected to the plate (12) which is electrically connected to an electrical ground.
    [0002]
    2. Apparatus for air delivery according to claim 1, characterized in that said plate (12) is disposed on one side of the stator (14) opposite the side of said rotor (16).
    [0003]
    3. Air pumping device according to claim 1 or 2, characterized in that the screen (60) is electrically connected to the plate (12) by means passing axially through the stator (14).
    [0004]
    4. An air supply device according to one of the preceding claims, characterized in that said screen (60) extends radially over the entire diameter of the stator (14).
    [0005]
    5. Air blower device according to one of the preceding claims, characterized in that said screen (60) has a substantially flat annular shape. & Air delivery device according to one of the preceding claims, characterized in that the screen is pierced at its center with a bore (62) to be traversed by an output shaft (8) of the motor. 7. Apparatus for air delivery according to claim 6, characterized in that said stator (14) has an annular shape with a central wall (18) which defines the contour of an internal bore (20) through which said shaft output (8). 8. Apparatus for air delivery according to the preceding claim, characterized in that said stator further comprises a plurality of teeth (26) arranged radially in a star from the outer face (24) of said central wall (18) and 3036889 12 each carrying a magnetic coil generating an electromagnetic field, 9. An air pumping device according to one of the preceding claims, characterized in that said screen (60) is fixed on the stator (14), by at least one fixing screw (70) adapted to cooperate with a hole (32) formed in the stator. 10. Apparatus for air delivery according to claims 7 and 9, characterized in that the internal bore (20) of the stator (14) has two distinct parts by changing the inner diameter of the central wall (18) defining said bore internal, a first portion of larger diameter extending from the edge 10 disposed axially in the vicinity of the screen to a shoulder edge (28) defining a second portion of smaller diameter, said hole (32) cooperating with the fixing screw (70) being formed in the shoulder edge. 11. Air pumping device according to the preceding claim, characterized in that the screen (60) comprises at least one lug (66) which extends substantially perpendicularly to the edge defining the central bore (62) of the screen. , and whose free end has a bearing edge (68), so that the tab comes into contact with the shoulder edge (28) by the support edge when the screen is in the stator covering position (14). Air-blast device according to the preceding claim, characterized in that the support edge (68) is arranged to pass through the body of the fixing screw (70) into the fixing hole (32) and be pressed against the shoulder edge (28) by the screw head. Air pumping device according to one of claims 9 to 12, characterized in that the screen (60) is connected to the electrical ground via said at least one fixing screw (70). which extends through said stator (14) to engage said platen (12). Air-blast device according to one of Claims 9 to 13, when dependent on at least Claim 7, characterized in that the stator (14) has at least one protruding axial boss (30). the inner face (22) of the central wall (18) defining the internal bore (20) of said stator, said boss being pierced axially of the fixing hole (32) adapted to be traversed by the at least one screw of fastener (70). 15. Air pumping device according to one of the preceding claims, characterized in that the screen (60) is made of an electrically conductive material. 16. An air supply device according to one of claims 7 to 15, when dependent on at least claim 6, characterized in that the output shaft (8) of said motor is rotatably mounted to the an inner channel (52) of the support means (10) through bearings (58, 59). 17. Air pumping device according to one of the preceding claims, characterized in that the plate (12) forms a heat sink carrying an electronic control board (13), in particular the supply of the coils of the stator. 18. Air pumping device according to the preceding claim, characterized in that the electronic control board (13) is disposed on the face of the plate (12) facing away from the support means (10). 19. Apparatus for air delivery according to one of claims 17 or 18, characterized in that the plate is electrically connected to the electrical ground of the electronic control board (13). 20. An air delivery device according to one of the preceding revendrCations, in combination with at least claim 8, characterized in that said rotor (16), arranged around the stator (14), carries at least a permanent magnet (46) whose interaction with said current-fed coils generates rotational movement of the rotor around the stator. 21. Heating, ventilation and / or air conditioning system of a motor vehicle comprising at least one air-blower device (1) according to any one of the preceding claims.
    类似技术:
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    同族专利:
    公开号 | 公开日
    US20180166952A1|2018-06-14|
    CN107667458B|2020-10-09|
    FR3036889B1|2019-05-17|
    CN107667458A|2018-02-06|
    JP2018516528A|2018-06-21|
    WO2016193044A1|2016-12-08|
    EP3304699B1|2020-04-08|
    JP6762962B2|2020-09-30|
    US10608507B2|2020-03-31|
    EP3304699A1|2018-04-11|
    引用文献:
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    JP5956201B2|2012-03-09|2016-07-27|ミネベア株式会社|Blower|TWI690135B|2018-04-09|2020-04-01|建準電機工業股份有限公司|Motor and electromagnetic interference protection device for motor|
    FR3111484A1|2020-06-10|2021-12-17|Valeo Systemes Thermiques|STATOR ASSEMBLY FOR ELECTRIC MOTOR WITH ELECTRONIC SWITCHING|
    FR3111483A1|2020-06-10|2021-12-17|Valeo Systemes Thermiques|STATOR ASSEMBLY FOR ELECTRIC MOTOR WITH ELECTRONIC SWITCHING|
    法律状态:
    2016-05-27| PLFP| Fee payment|Year of fee payment: 2 |
    2016-12-02| PLSC| Publication of the preliminary search report|Effective date: 20161202 |
    2017-05-30| PLFP| Fee payment|Year of fee payment: 3 |
    2018-05-28| PLFP| Fee payment|Year of fee payment: 4 |
    2019-05-31| PLFP| Fee payment|Year of fee payment: 5 |
    2020-05-30| PLFP| Fee payment|Year of fee payment: 6 |
    2021-05-31| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1554868A|FR3036889B1|2015-05-29|2015-05-29|ELECTRONICALLY SWITCHED ELECTRIC MOTOR AND CORRESPONDING AIR PULSE DEVICE|
    FR1554868|2015-05-29|FR1554868A| FR3036889B1|2015-05-29|2015-05-29|ELECTRONICALLY SWITCHED ELECTRIC MOTOR AND CORRESPONDING AIR PULSE DEVICE|
    US15/574,920| US10608507B2|2015-05-29|2016-05-23|Electronically switched electric motor and corresponding air pulse device|
    JP2017561904A| JP6762962B2|2015-05-29|2016-05-23|Electric motors that are electrically switched and corresponding air pulse generators|
    EP16724087.8A| EP3304699B1|2015-05-29|2016-05-23|Electronically switched electric motor and corresponding air pulse device|
    CN201680030691.7A| CN107667458B|2015-05-29|2016-05-23|Electronically switched electric motor and corresponding air pulsation device|
    PCT/EP2016/061614| WO2016193044A1|2015-05-29|2016-05-23|Electronically switched electric motor and corresponding air pulse device|
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