• 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 invention relates to an air-cooled electric machine (1) having a rotor (3) rotatably connected to a rotor shaft (2), a stator (4) with axially arranged cooling channels (5), on the drive side (AS) and non-drive side (NAS) Machine (1) arranged bearing plates (8, 9) comprising the bearings (6, 7) for rotatably receiving the rotor shaft (2), one at the drive end (10) of the shaft (2) arranged clutch (11) with a machine-side coupling part ( 12) and a transmission-side coupling part (13) for connection to a transmission (14), and with a with the rotor shaft (2) connected fan (15) for guiding the cooling air through the axial cooling channels (5). To achieve a more compact design and improved cooling effect of the fan (15) on the drive side (AS) of the machine (1) is arranged and integrated in the clutch (11), so that the cooling air (L) from an air inlet (16) on the Drive side (AS) through the axial cooling channels (5) to an air outlet (17) on the non-drive side (NAS) is feasible.
    公开号:AT518218A1
    申请号:T50051/2016
    申请日:2016-01-29
    公开日:2017-08-15
    发明作者:Dr Techn Harald Neudorfer Dr；Philipp Samstag Ing；Ing Michael Stockmayer Dipl
    申请人:Traktionssysteme Austria Gmbh；
    IPC主号:
    专利说明:

    The invention relates to an air-cooled electric machine having a rotatably connected to a rotor shaft rotor, a stator with axially disposed cooling channels, arranged on the drive side and non-drive side of the machine end shields containing the bearings for rotatably receiving the rotor shaft, arranged at the drive end of the shaft coupling a machine-side coupling part and a transmission-side coupling part for connection to a transmission, and with a fan connected to the rotor shaft for guiding the cooling air through the axial cooling channels. Usually located in air-cooled electric machines on the non-drive side of the machine, a fan which is rotatably connected to the rotor shaft to guide during operation of the electric machine cooling air through axially disposed cooling channels in the stator and possibly rotor and dissipate the heat generated. For example, AT 508 879 Bl describes a similar air-cooled electric machine with a non-drive-side fan.
    By arranged on the non-drive side fan, the axial length of the drive is increased, whereby the space required for the electric machine increases. In addition, the cooling effect is deteriorated in an electric machine with non-drive side fan arranged on the drive side.
    The object of the present invention is therefore to provide an above-mentioned air-cooled electric machine with less space or higher performance with the same size and at least the same cooling effect compared to conventional electrical machines.
    The object of the invention is achieved in that the fan is arranged on the drive side of the machine and integrated in the clutch, so that the cooling air can be guided from an air inlet on the drive side through the axial cooling channels to an air outlet on the non-drive side. The inventive arrangement of the fan on the drive side of the machine and integration in the coupling, the axial length of the electric machine can be reduced or the performance of the electric machine with the same size compared to conventional air-cooled electric machines can be increased. The fact that the rotor shaft can be made shorter than conventional electric machines, also results in a corresponding reduction in mass. By the fan arranged on the drive side, the cooling effect of the bearing on the drive side of the electric machine with respect to the cooling effect on the non-drive side is improved. Such space-saving air-cooled electrical machines are particularly suitable for use as a drive machine in rail vehicles, in particular trams.
    Advantageously, the fan is arranged on the machine-side coupling part. By such a construction, the axial length of the electric machine is not increased by the fan. The fan can be pressed on the machine-side coupling part or the rotor shaft in this area or connected via appropriate screws.
    Likewise, the fan can be made in one piece with the machine-side coupling part. Such an integration of the fan in the clutch, the assembly cost is reduced accordingly.
    If elements for guiding the cooling air are provided, the cooling effect can be further improved by directing the cooling air over the areas of the electric machine to be cooled.
    According to a feature of the invention, guide elements are arranged in the region of the air inlet. By such air guide elements in the region of the air inlet, the cooling air can be selectively supplied to the drive side arranged fan, whereby turbulence can be avoided and the efficiency of the cooling can be improved.
    The guide elements can be made in one piece with the drive-side bearing plate, whereby the assembly cost can be reduced.
    On the non-drive end shield cooling fins can be arranged. Thus, an improved cooling effect can also be achieved on the non-drive side of the electric machine.
    Optionally, a further fan for cooling the transmission is arranged on the transmission-side coupling part. Also, this further fan can be pressed onto the transmission-side coupling part or the rotor shaft or connected with appropriate screws. In addition, a one-piece production of the transmission-side coupling part with the other fan is possible.
    Advantageously, the electric machine is surrounded by a housing. By such a housing, the electrical machine is protected from contamination. To prevent the suction of dirty cooling air can be arranged on the air inlets mechanical or magnetic filter, which remove particles from the cooling air and prevent them from accumulating in the cooling channels of the electric machine.
    The stator may have cooling ribs in the region of the axial cooling channels. By thus designed cooling fins, which may also be integrated in the above-mentioned housing, the removal of heat is further improved.
    The fan and possibly the other fan can be formed by a radial fan. Such radial aerators are for the objective application, in which the cooling air enters axially through the air inlets and is then continued radially in the direction of the channels arranged in the stator, particularly advantageous. Alternatively, however, the use of axial fans is conceivable.
    The fan and possibly the other fan can be made of steel or aluminum or an aluminum alloy. The use of metals is preferable in terms of mechanical ruggedness, with aluminum or aluminum alloy being preferable to steel in terms of weight. On the condition of appropriate temperature resistance and material variants are based on plastic or
    Plastic-based composites, which withstand temperatures in excess of 100 ° Celsius, are conceivable for the production of the fans. Ideally, the fans are made by casting.
    According to a further feature of the invention, the fan and possibly the further fan on curved blades. Such a variant is advantageous in electric machines with only one direction of rotation. If the electric machine is used in both directions of rotation, it will be preferable to use shovels in order to be able to achieve a corresponding cooling effect in both directions of rotation.
    Advantageously, the fan and the machine-side coupling part of the clutch and the other fan and the transmission-side coupling part of the clutch are balanced together. By this measure, vibrations of the electric machine and, as a result, noise developments can be reduced. For this purpose, the fan and possibly the other fan may have a corresponding groove for the use of balancing weights.
    The coupling may be formed for example by a curved tooth coupling. In a curved tooth coupling of the machine-side coupling part and the transmission-side coupling part is releasably connected to each other by interlocking teeth. Other variants of couplings are of course also conceivable (for example, membrane couplings, all-steel couplings, spur couplings, jaw couplings, elastic pin couplings, elastic sprocket couplings, hollow shaft couplings, Keilpaketkupplungen). The couplings can be carried out in a current-isolated manner. Furthermore, the couplings can be equipped with a sliding element.
    On the drive side, a labyrinth seal is preferably arranged between the bearing plate and the machine-side coupling part. By means of such a labyrinth seal, a contact-free sealing of the rotating rotor shaft relative to the stationary parts of the electrical machine can be achieved. Depending on the embodiment, a corresponding number of labyrinth stages can be provided in the labyrinth seal. The rotary labyrinth seal can be made as follows: • the labyrinth stages are integrated in a separate component mounted on the rotor shaft; The labyrinth stages as part of the machine-side coupling part; • The labyrinth stages as part of the fan.
    The invention will be explained in more detail with reference to the accompanying drawings. Show:
    1 shows a partially sectioned embodiment of an inventively designed air-cooled electric machine.
    2 shows a variant with respect to FIG. 1, in which the fan is connected via screws to the machine-side coupling part;
    Fig. 3 shows a variant of a fan which is made in one piece with the machine side coupling part;
    4 optionally arranged guide elements in the region of the air inlet and drive-side bearing plate;
    Figure 5 is a view of an air-cooled electric machine with another fan for cooling the transmission.
    6 and 7 an embodiment of the air-cooled electric machine with cooling fins on the stator in plan view and side view;
    8 shows a variant of an electrical machine with two fans arranged on the drive side;
    FIG. 9 is a sectional view taken along section line IX-IX of FIG. 8; FIG. and
    10 is a partial sectional view of the drive side of an air-cooled electric machine of the subject type with a labyrinth seal in the region of the drive-side end shield.
    Fig. 1 shows an air-cooled electric machine 1 of the subject type in partially cut form. The electric machine 1 shows a rotatably connected to a rotor shaft 2 rotor 3, a stator 4 arranged therein with axial cooling channels 5 and arranged on the drive side AS bearing plate 8 with a bearing 6 therein for rotatably receiving the rotor shaft 2 and one on the non-drive side NAS of the machine 1 arranged bearing plate 9 with the bearing 7 for rotatably receiving the rotor shaft 2. At the drive end 10 of the rotor shaft 2, a clutch 11 is provided for connection to a corresponding gear 14. The coupling 11 comprises a machine-side coupling part 12 and a transmission-side coupling part 13, which can be connected, for example, via corresponding toothings, such as e.g. in a curved tooth coupling, are releasably connected together. With the rotor shaft 2, a fan 15 for guiding the cooling air L through the axial cooling channels 5 is connected. According to the invention, the fan 15 is arranged on the drive side AS of the machine 1 and integrated in the coupling 11. The cooling air L passes through the air inlets 16 on the drive side AS of the electric machine 1 through the axial cooling channels 5 in the stator 4 to corresponding air outlets 17 on the non-drive side NAS of the electric machine 1. By integrating the fan 15 in the clutch 11 is the axial Length of the electric machine 1 is not increased by the fan 15, which is why smaller electric machines 1 can be made at the same power or identical electrical machines 1 with higher performance over conventional electric machines 1. The fan 15 can be arranged on the machine-side coupling part 12, for example, be pressed. The area of the fan 15 may be surrounded by a housing 22, whereby the area of the fan 15 is protected from contamination. To prevent the suction of dirty cooling air 16 mechanical or magnetic filters can be arranged at the air inlets, which remove particles from the cooling air and prevent deposits in the cooling channels of the electric machine 1.
    Fig. 2 shows a variant in which the fan 15 is arranged via corresponding screws 18 on the machine-side coupling part 12. Furthermore, the fan 15, a groove 26 for the
    Use of balancing weights.
    Furthermore, as shown in Fig. 3, a one-piece production of the fan 15 with the machine-side coupling part 12 is conceivable.
    The fan 15 is preferably formed of steel or aluminum or an aluminum alloy and is possibly produced together with the machine-side coupling part 12, preferably by casting.
    4 shows a part of an air-cooled electric machine 1 in a sectional representation, with elements 19 for guiding the cooling air L being arranged in the region of the air inlet 16 and on the inside of the housing 22. Preferably, the guide elements 19 are made in one piece with the housing or drive-side end plate 8.
    In the embodiment of an air-cooled electric machine 1 according to FIG. 5, a further fan 21 for cooling the transmission 14 is arranged on the transmission-side coupling part 13. This further fan 21 can in turn be pressed onto the transmission-side coupling part 13 or connected by appropriate screws (not shown). A one-piece production of the transmission-side coupling part 13 with the fan 21, preferably made of steel, aluminum or an aluminum alloy, is possible. On the non-drive side end shield 9 and / or housing 22 of the air-cooled electric machine 1 cooling fins 20 may be provided to improve the cooling effect.
    6 and 7 show a further embodiment of an electrical machine 1, wherein on the housing 22 in the region of the axial cooling channels 5 of the stator 4 additional cooling fins 23 are arranged. These cooling ribs 23 are preferably produced in a casting process with the housing 22 of the electric machine 1.
    FIG. 8 shows a further embodiment of an air-cooled electric machine 1 designed according to the invention with two fans 15, 21 arranged on the drive side AS. As can be seen from the sectional view along the section line IX-IX in FIG. 9 by the further fan 21, the blades are 25 the further fan 21 is curved, which is advantageous for electrical machines 1 with only one direction of rotation.
    Finally, FIG. 10 shows a further embodiment of a part of an electric machine 1 in a sectional view, in which a labyrinth seal 25 is arranged on the drive side AS between the drive-side end shield 8 and the rotor shaft 2 or the motor-side coupling part 12. With the help of the machine-side coupling part 12, the bearing 6 is axially fixed on the drive side AS and prevents turning of the bearing inner ring.
    权利要求:
    Claims (17)
    [1]
    Claims:
    1. An air-cooled electric machine (1) with a rotor (3) rotatably connected to a rotor shaft (2), a stator (4) with axially arranged cooling channels (5), on the drive side (AS) and non-drive side (NAS) of the machine ( 1) arranged bearing plates (8, 9) containing the bearings (6, 7) for rotatably receiving the rotor shaft (2), one at the drive end (10) of the shaft (2) arranged clutch (11) having a machine-side coupling part (12) and a transmission-side coupling part (13) for connection to a transmission (14), and a fan (15) connected to the rotor shaft (2) for guiding the cooling air through the axial cooling channels (5), characterized in that the fan (15 ) is arranged on the drive side (AS) of the machine (1) and integrated in the clutch (11), so that the cooling air (L) from an air inlet (16) on the drive side (AS) through the axial cooling channels (5) to a Air outlet (17) on the non-drive side (NAS) feasible is.
    [2]
    2. Electrical machine (1) according to claim 1, characterized in that the fan (15) on the machine-side coupling part (12) is arranged.
    [3]
    3. Electrical machine (1) according to claim 1 or 2, characterized in that the fan (15) with the machine-side coupling part (12) is made in one piece.
    [4]
    4. Electrical machine (1) according to one of claims 1 to 3, characterized in that elements (19) for guiding the cooling air (L) are provided.
    [5]
    5. Electrical machine (1) according to claim 4, characterized in that guide elements (19) in the region of the air inlet (16) are arranged.
    [6]
    6. Electrical machine (1) according to claim 4 or 5, characterized in that guide elements (19) are made in one piece with the drive-side bearing plate (8).
    [7]
    7. Electrical machine (1) according to one of claims 1 to 6, characterized in that on the non-drive end bearing plate (9) cooling ribs (20) are arranged.
    [8]
    8. Electrical machine (1) according to one of claims 1 to 7, characterized in that the transmission-side coupling part (13), a further fan (21) for cooling the transmission (14) is arranged.
    [9]
    9. Electrical machine (1) according to one of claims 1 to 8, characterized in that a housing (22) is provided.
    [10]
    10. Electrical machine (1) according to one of claims 1 to 9, characterized in that the stator (4) in the region of the axial cooling channels (5) cooling ribs (23).
    [11]
    11. Electrical machine (1) according to one of claims 8 to 10, characterized in that the fan (15) and possibly the further fan (21) is formed by a radial fan.
    [12]
    12. Electrical machine (1) according to one of claims 8 to 11, characterized in that the fan (15) and possibly the further fan (21) made of steel or aluminum or an aluminum alloy is formed.
    [13]
    13. Electrical machine (1) according to one of claims 8 to 12, characterized in that the fan (15) and possibly the further fan (21) curved blades (24).
    [14]
    14. Electrical machine (1) according to one of claims 1 to 13, characterized in that the fan (15) and the machine-side coupling part (12) of the coupling (11) are balanced together.
    [15]
    15. Electrical machine (1) according to one of claims 8 to 14, characterized in that the further fan (21) and the transmission-side coupling part (13) of the coupling (11) are balanced together.
    [16]
    16. Electrical machine (1) according to one of claims 1 to 15, characterized in that the coupling (11) is formed by a curved tooth coupling.
    [17]
    17. Electrical machine (1) according to one of claims 1 to 16, characterized in that on the drive side (AS) between the bearing plate (8) and machine-side coupling part (12) a labyrinth seal (25) is arranged.
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    同族专利:
    公开号 | 公开日
    PL3200327T3|2020-11-16|
    AT518218B1|2017-12-15|
    ES2809102T3|2021-03-03|
    EP3200327A1|2017-08-02|
    EP3200327B1|2020-06-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20030113209A1|2001-12-19|2003-06-19|Wasson Dewain L.|Combination fan-flywheel-pulley assembly and method of forming|
    DE102008023712A1|2008-05-15|2009-11-19|Bayerische Motoren Werke Aktiengesellschaft|Drive train for hybrid vehicles, comprises combustion engine, which has crankshaft, transmission, which comprises transmission input, and coupling unit arranged between crankshaft and transmission input|
    AT154719B|1936-05-28|1938-10-25|Bbc Ag Oesterr|Drive for electrically operated vehicles, in particular for light rail vehicles and road vehicles.|
    DE1488452A1|1965-11-09|1969-04-10|Bosch Gmbh Robert|Collector motor that can be operated with alternating current|
    US3622821A|1970-03-27|1971-11-23|Black & Decker Mfg Co|Double-insulated motor armature|
    DE2548058C2|1975-10-27|1986-02-13|Thyssen Industrie Ag, 4300 Essen|Double axle drive for rail vehicles|
    US6891290B2|2002-11-25|2005-05-10|Kabushiki Kaisha Toshiba|Fully enclosed type motor with outer fans|
    US7459817B2|2006-08-15|2008-12-02|Bombardier Transportation Gmbh|Semi-enclosed AC motor|CN110829726A|2019-12-09|2020-02-21|深圳市中悦机电科技有限公司|Heat radiation structure of permanent magnet motor|
    CN111740544B|2020-08-25|2021-01-22|浙江福霸机电有限公司|Heat dissipation motor that heat was adjusted can carry out|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50051/2016A|AT518218B1|2016-01-29|2016-01-29|Air-cooled electric machine|ATA50051/2016A| AT518218B1|2016-01-29|2016-01-29|Air-cooled electric machine|
    EP17153168.4A| EP3200327B1|2016-01-29|2017-01-26|Air-cooled electric machine|
    ES17153168T| ES2809102T3|2016-01-29|2017-01-26|Air Cooled Electric Machine|
    PL17153168T| PL3200327T3|2016-01-29|2017-01-26|Air-cooled electric machine|
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