JP2008035584A

JP2008035584A - Self-ventilation cooling type rotating electric machine for vehicle

Info

Publication number: JP2008035584A
Application number: JP2006203159A
Authority: JP
Inventors: Tomohito Maruno; 智仁丸野; Takashi Nagayama; 孝永山; Yoshitaka Kobayashi; 芳隆小林
Original assignee: Toshiba Corp
Current assignee: Toshiba Corp
Priority date: 2006-07-26
Filing date: 2006-07-26
Publication date: 2008-02-14

Abstract

<P>PROBLEM TO BE SOLVED: To secure a constant stable cooling wind volume in a range from low-speed rotation to high-speed rotation, to reduce noise in a range of the high-speed rotation, to facilitate assembling and manufacturing by adopting a simple shape capable of eliminating a guide plate, and to reduce cost, in a ventilation fan of a self-ventilation cooling type rotating electric machine for a vehicle. <P>SOLUTION: In a self-ventilation cooling type main motor which makes a cooling wind communicate in the rotating electric machine, and discharges the wind to the outside from the other-end side wind discharging port, a plurality of pieces of main plates 21 and blades 22 of the ventilation fan 19 are arranged, and ventilation holes are formed at the main plates. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、主に電車等鉄道車両の誘導電動機などの車両用自己通風冷却形回転電機に関する。 The present invention relates to a self-ventilated cooling rotary electric machine for a vehicle such as an induction motor of a railway vehicle such as a train.

従来の、主に鉄道車両用として用いられている誘導電動機（以下、回転電機と称する）が特許文献１（特許公報第２６８５３０８号）に開示されている。図１１は、従来の回転電機の下半部を省略した断面図で、図中１は回転電機の円筒形をなすフレーム、このフレーム１の内周面に固定子（ステータ鉄心）２をステータ鉄心押え３で両端から押え付けて取り付け、かつ、固定子２の内周面に形成した多数のスロットにステータコイル４を組み付けると共に、これらのステータコイル４を相互に接続して、回転磁界を発生する固定子回路を構成している。 A conventional induction motor (hereinafter, referred to as a rotating electric machine) mainly used for a railway vehicle is disclosed in Patent Document 1 (Japanese Patent Publication No. 2685308). FIG. 11 is a cross-sectional view in which the lower half portion of a conventional rotating electrical machine is omitted. In FIG. 11, reference numeral 1 denotes a cylindrical frame of the rotating electrical machine, and a stator (stator core) 2 is attached to the inner peripheral surface of the frame 1 as a stator core. The presser 3 is pressed and attached from both ends, and the stator coil 4 is assembled to a large number of slots formed on the inner peripheral surface of the stator 2, and these stator coils 4 are connected to each other to generate a rotating magnetic field. A stator circuit is configured.

また固定子のフレーム１の端板１ａと、他端に嵌合した鏡ふた５と軸受６を組み付け、両端軸受６，６によりシャフト７に回転子（ロータ鉄心）８をロータ鉄心押え９で両端から押え付けて固着し、かつ回転子８の外周面に形成した多数のスロットにロータバー１０を組み付け、このロータバー１０の両端にリング状の短絡環（エンドリング）１１を溶着して、カゴ形回転子を構成している。 Further, the end plate 1a of the stator frame 1, the mirror lid 5 fitted to the other end, and the bearing 6 are assembled, and the rotor (rotor core) 8 is fixed to the shaft 7 by the rotor core presser 9 at both ends with the bearings 6 and 6 at both ends. The rotor bar 10 is assembled into a large number of slots formed on the outer peripheral surface of the rotor 8, and ring-shaped short rings (end rings) 11 are welded to both ends of the rotor bar 10 to rotate the cage. Constitutes a child.

そして通電によりロータが回転し、この回転力がシャフト７の軸端より図示していないカップリングを介し駆動歯車装置に伝わって車両を走行させる。 Then, the rotor is rotated by energization, and this rotational force is transmitted from the shaft end of the shaft 7 to the drive gear device via a coupling (not shown) to drive the vehicle.

こうした回転電機は運転稼動時に発熱して過熱しやすく、また、ある限度以上に過熱するとコイル絶縁物の劣化が促進して寿命が低下したり、発熱体の強度低下を招く。このために回転電機内（以下単に機内と呼ぶ）を冷却する必要がある。この冷却方式としては図１１に示すように、鏡ふた５の周壁に排風口１３を複数個互いに円周方向に間隔を存して形成すると共に、機内端部に内蔵する形で通風ファン１４をシャフト（回転子軸）７に固定して設けた自己通風冷却形が一般的である。この方式の回転電機は、運転稼動時にシャフト７と一体で通風ファン１４が回転し、この排風作用で外気等の冷却風を冷却風導入口１２より機内一端側に取り入れ、これを固定子（ステータ鉄心）２と回転子８とのギャップＧや、回転子８に貫通した複数個の通風穴８ａを通して他端側排風口１３より機外に排気する。この冷却風の通風により機内のステータコイル４や、ロータバー１０等を冷却して温度上昇を抑制する。 Such a rotating electrical machine generates heat during operation and easily overheats, and overheating beyond a certain limit promotes deterioration of the coil insulator, shortens the service life, and decreases the strength of the heating element. Therefore, it is necessary to cool the inside of the rotating electrical machine (hereinafter simply referred to as the inside of the machine). As shown in FIG. 11, the cooling system is formed by forming a plurality of air outlets 13 on the peripheral wall of the mirror lid 5 at intervals in the circumferential direction, and installing the ventilation fan 14 in the form of being built in the end of the machine. A self-air-cooling type fixed to a shaft (rotor shaft) 7 is generally used. In this type of rotating electrical machine, the ventilation fan 14 rotates integrally with the shaft 7 during operation, and this exhausting action takes cooling air such as outside air from the cooling air inlet 12 into one end of the machine, and this is taken as a stator ( The air is exhausted from the other end side air exhaust port 13 through the gap G between the stator iron core 2 and the rotor 8 and a plurality of ventilation holes 8 a penetrating the rotor 8. The stator coil 4 in the machine, the rotor bar 10 and the like are cooled by the ventilation of the cooling air to suppress the temperature rise.

上記自己通風冷却形回転電機の通風ファン１４は、シャフト７に嵌合するボス部１５と、このボス部１５外周から軸方向他端側に向け略ラッパ状に拡開状態に突出する主板１６と、この主板１６の垂直な外周板部１６ａの内面と間隔を存して対向配置する環状の案内板１７と、これら主板１６の外周板部１６ａと案内板１７との相互間に挟まれた多数枚の羽根１８とから構成されている。なおこの通風ファンには車両の前進、後退の進行方向により主電動機の回転方向が逆転しても、機内への通風量の差が生じないように、各羽根１８が図２に示すように放射状に配置されている。
特許公報第２６８５３０８号（特開平３−１１８７４５号公報） The ventilation fan 14 of the self-ventilated cooling type rotating electrical machine includes a boss portion 15 fitted to the shaft 7, and a main plate 16 projecting in a substantially trumpet shape from the outer periphery of the boss portion 15 toward the other end side in the axial direction. The annular guide plate 17 disposed opposite to the inner surface of the vertical outer peripheral plate portion 16a of the main plate 16 with a space therebetween, and many sandwiched between the outer peripheral plate portion 16a and the guide plate 17 of the main plate 16 It is composed of a single blade 18. In this ventilation fan, each blade 18 has a radial shape as shown in FIG. 2 so that a difference in the amount of ventilation into the machine does not occur even if the rotation direction of the main motor is reversed depending on the traveling direction of the vehicle. Is arranged.
Japanese Patent No. 2685308 (Japanese Patent Laid-Open No. 3-118745)

鉄道車両用回転電機は低速回転域でのトルクが必要なため高温になる。このため機内の冷却に多くの風量が必要である。逆に高速回転域においてはトルクが低くなるため、冷却風量は少なくてもよい。このため通常は低速回転時の風量に合わせて通風ファンの設計を行う。しかし高速回転になるほど通風ファンの回転も上がるため、必要以上の風量が発生し損失が大きくなる。また風量増加に伴う通風ファンの騒音も大きくなる。 Railroad car rotating electrical machines become hot because they require torque in the low-speed rotation range. For this reason, a large amount of air flow is required for cooling in the machine. On the contrary, since the torque is low in the high speed rotation region, the cooling air volume may be small. For this reason, a ventilation fan is usually designed according to the air volume during low-speed rotation. However, the higher the rotation speed, the higher the rotation of the ventilation fan, resulting in an unnecessarily large air volume and increased loss. In addition, the noise of the ventilation fan accompanying the increase in the air volume increases.

また、従来の通風ファン構造は、部品点数が多く、また、羽根が案内板と主板の間に配置される構造のため、構造が複雑で、特に、鋳造の際に部材間の精度を上げることが非常に困難で、不良品が発生しやすく、製造コストが高くなるという問題があった。 In addition, the conventional ventilation fan structure has a large number of parts and a structure in which the blades are arranged between the guide plate and the main plate. Therefore, the structure is complicated, and in particular, the accuracy between the members is increased during casting. However, there is a problem that defective products are easily generated and the manufacturing cost is increased.

本発明は、上記課題を解決するためになされたもので、低速回転時の冷却風量を維持しつつ高速回転時は風量が少なくなる通風ファンを提供し、損失の低減と通風ファン騒音の低減を図るとともに、通風ファン構造を簡素化し、組立・製造が容易で、製造コストを低く抑えることを可能とする。 The present invention has been made to solve the above-described problems, and provides a ventilation fan that maintains the cooling air volume at low speed rotation and reduces the air volume at high speed rotation, reducing loss and reducing ventilation fan noise. As well as simplifying the structure of the ventilation fan, it is easy to assemble and manufacture, and it is possible to keep the manufacturing cost low.

そのために、本発明は、回転電機内のシャフト（回転子軸）に固定した通風ファンの回転により、フレームの軸方向一端の冷却風導入口から冷却風を機内に取り入れ、この冷却風を回転電機内に通風させて、他端側排風口より回転電機外に排気する車両用自己通風冷却形回転電機において、前記通風ファンの主板に羽根を放射状に複数枚配設するとともに前記主板に通風孔を配設したことを特徴とする。 For this purpose, the present invention takes in the cooling air from the cooling air inlet at one end in the axial direction of the frame by rotation of a ventilation fan fixed to a shaft (rotor shaft) in the rotating electrical machine, In a vehicle self-ventilated cooling type rotating electrical machine that ventilates inside and exhausts outside the rotating electrical machine from the other end side exhaust port, a plurality of blades are arranged radially on the main plate of the ventilation fan and vent holes are formed in the main plate. It is characterized by being arranged.

また、本発明は、回転電機の回転シャフトに固定した通風ファンの回転により、フレームの軸方向一端の冷却風導入口から冷却風を前記回転電機内に取り入れ、この冷却風を前記回転電機内に流通させて他端側排風口より前記回転電機外に排気する車両用自己通風冷却形主電動機において、前記通風ファンを回転子に直付けするとともに、前記通風ファンの主板に羽根を放射状に複数枚配設し、かつ、回転子の通風穴に連通する通風孔を前記主板に配設したことを特徴とする。 Further, according to the present invention, cooling air is taken into the rotating electrical machine from the cooling air introduction port at one end in the axial direction of the frame by rotation of a ventilation fan fixed to the rotating shaft of the rotating electrical machine, and the cooling air is introduced into the rotating electrical machine. In a self-cooled cooling main motor for a vehicle that circulates and exhausts out of the rotating electrical machine from the other end side exhaust port, the ventilation fan is directly attached to the rotor, and a plurality of blades are radially provided on the main plate of the ventilation fan. The main plate is provided with ventilation holes that are arranged and communicate with the ventilation holes of the rotor.

また、本発明は、高速回転時の風量をより効果的に抑制するために、前記通風孔を傾斜させて配設することを特徴とする。 Further, the present invention is characterized in that the ventilation holes are inclined and arranged in order to more effectively suppress the air volume during high-speed rotation.

前記通風ファンにおいて、低速回転域から高速回転域において一定の安定した冷却風量を確保することができるようになり、高速回転域での騒音を減らすことができる。また案内板を廃止した単純形状とすることによって組立・製造を容易にし、コストを低減することができる。これにより冷却性能を向上させるとともに、安価な回転電機を提供することができる。 In the ventilation fan, a constant and stable cooling air volume can be secured from the low-speed rotation range to the high-speed rotation range, and noise in the high-speed rotation range can be reduced. Moreover, assembly and manufacture can be facilitated and costs can be reduced by making the guide plate a simple shape. As a result, the cooling performance can be improved and an inexpensive rotating electrical machine can be provided.

（第１の実施の形態）
以下、本発明の車両用自己通風冷却形回転電機の第１の実施の形態を図１、図２および図３により説明する。なお、図中前記図１１および図１２に示した構成と重複するものには同一符号を付して説明の簡略化を図る。 (First embodiment)
A first embodiment of a self-ventilated cooling type rotating electrical machine for a vehicle according to the present invention will be described below with reference to FIGS. 1, 2 and 3. FIG. In the figure, the same components as those shown in FIG. 11 and FIG.

図１の１９は従来同様回転電機内端部に内蔵する形でシャフト（回転子軸）７に固定して設けた冷却用の通風ファンで、シャフト７に嵌着するボス部２０と、このボス部２０外周から軸方向他端側に向け略ラッパ状に拡開状態に突出する主板２１と、この主板２１の反鉄心側に放射状に多数枚の羽根２２と、内径側に設けた通風孔２３から構成されている。 Reference numeral 19 in FIG. 1 denotes a cooling ventilation fan that is fixed to a shaft (rotor shaft) 7 so as to be built in the inner end of the rotating electrical machine, as in the prior art, and includes a boss portion 20 fitted to the shaft 7 and the boss portion. A main plate 21 projecting in a substantially trumpet shape from the outer periphery of the portion 20 to the other end side in the axial direction, a large number of blades 22 radially on the anti-core side of the main plate 21, and a vent hole 23 provided on the inner diameter side It is composed of

この冷却方式としては、フレーム１の周壁の軸方向一端上部に冷却風導入口１２を形成し、同じく鏡ふた５の周壁の軸方向他端に排風口１３を複数個円周方向に間隔を存して形成すると共に、機内端部に内蔵する形で通風ファン１９をシャフト（回転子軸）７に固定した自己通風冷却形となっている。 In this cooling method, a cooling air inlet 12 is formed at one upper part of the peripheral wall of the frame 1 in the axial direction, and a plurality of air outlets 13 are provided at the other axial end of the peripheral wall of the mirror lid 5 in the circumferential direction. In addition, a self-ventilated cooling type in which the ventilation fan 19 is fixed to the shaft (rotor shaft) 7 in a form incorporated in the end portion in the machine.

この方式では運転稼動時にシャフト７と一体に通風ファン１９が回転し、この排風作用で外気等の冷却風を冷却風導入口１２より機内一端側に取り入れ、これを固定子（ステータ鉄心）２と回転子（ロータ鉄心）８とのギャップＧや、回転子８に貫通した複数個の通風穴８ａと通して他端側排風口１３より機外に排気する。 In this system, the ventilation fan 19 rotates integrally with the shaft 7 during operation, and cooling air such as outside air is taken into one end of the machine from the cooling air inlet 12 by this exhaust action, and this is taken into the stator (stator core) 2. And the rotor (rotor core) 8 through a plurality of ventilation holes 8a penetrating the rotor 8 and exhausted to the outside from the other end side exhaust port 13.

図２は通風ファンの断面、正面図で、図３は通風ファンの断面における冷却風の流れを示している。低速回転時に通風孔２３を流れていた冷却風は、高速回転時になると遠心力の増加により通風孔２３の外側内壁に押え付けられ流れにくくなり、通風量が減少する。これに伴って騒音も小さくなる。 FIG. 2 is a cross-sectional front view of the ventilation fan, and FIG. 3 shows the flow of cooling air in the cross-section of the ventilation fan. The cooling air that has been flowing through the ventilation hole 23 during low-speed rotation is pressed against the outer inner wall of the ventilation hole 23 due to an increase in centrifugal force when the rotation speed is high, and the amount of ventilation decreases. Along with this, noise is also reduced.

また、低速回転時に一定の冷却風量を確保し、高速回転時には冷却風量を制限するという上記機能を、より効果的にするために、通風孔２３は、シャフト軸７に対し、図３に示すように幾分傾斜させて配置させることが好ましい。 Further, in order to make the above-described function of ensuring a constant cooling air volume during low-speed rotation and limiting the cooling air volume during high-speed rotation more effective, the ventilation hole 23 is formed as shown in FIG. It is preferable to arrange them at a slight inclination.

（第２の実施の形態）
図４に本発明による第２の実施の形態を示す。内径側に配設した通風孔２３を複数段とすることで、通風量が更に向上し冷却効率が向上する。 (Second Embodiment)
FIG. 4 shows a second embodiment according to the present invention. By making the ventilation holes 23 arranged on the inner diameter side into a plurality of stages, the ventilation amount is further improved and the cooling efficiency is improved.

（第３の実施の形態）
図５に本発明による第３の実施の形態を示す。この例では、内径側に配設した通風孔２３を楕円穴としているが、他の形状、例えば角穴でもよい。主板の機械的強度、製造コスト、必要な冷却風量、等を考慮して、種々の形状を採用することができる。 (Third embodiment)
FIG. 5 shows a third embodiment according to the present invention. In this example, the ventilation holes 23 arranged on the inner diameter side are elliptical holes, but other shapes such as square holes may be used. Various shapes can be adopted in consideration of the mechanical strength of the main plate, the manufacturing cost, the required amount of cooling air, and the like.

（第４の実施の形態）
図６に本発明による第４の実施の形態を示す。鉄心側の通風孔に円筒リング２４を設けることで、吸気抵抗が減少し冷却効率が向上する。 (Fourth embodiment)
FIG. 6 shows a fourth embodiment according to the present invention. By providing the cylindrical ring 24 in the ventilation hole on the iron core side, the intake resistance is reduced and the cooling efficiency is improved.

（第５の実施の形態）
図７は本発明による第５の実施の形態を示す。通風孔２３を回転子と固定子のギャップと同一の径の位置に配置することで、ギャップ間の通風量が増大し冷却効率が向上する。 (Fifth embodiment)
FIG. 7 shows a fifth embodiment according to the present invention. By arranging the ventilation holes 23 at the same diameter as the gap between the rotor and the stator, the amount of ventilation between the gaps is increased and the cooling efficiency is improved.

（第６の実施の形態）
図８は本発明よる第６の実施の形態を示す。通風ファン１９を回転子８に直付けし、回転子の通風穴に連通するように通風孔を主板に配設する。これにより、回転子の通風量が増大し冷却効率が向上する。図９は通風ファンの断面、正面図を示しており、主板には通風孔が多段に配設されている。 (Sixth embodiment)
FIG. 8 shows a sixth embodiment according to the present invention. A ventilation fan 19 is directly attached to the rotor 8, and ventilation holes are arranged in the main plate so as to communicate with the ventilation holes of the rotor. Thereby, the air flow rate of the rotor is increased and the cooling efficiency is improved. FIG. 9 shows a cross-sectional view and a front view of the ventilation fan, and the main plate is provided with ventilation holes in multiple stages.

（第７の実施の形態）
図１０は本発明による第７の実施の形態を示す。排風口１３をフレーム１に配設することにより構造の簡略化を行っている。 (Seventh embodiment)
FIG. 10 shows a seventh embodiment according to the present invention. The structure is simplified by arranging the air exhaust port 13 in the frame 1.

本発明の第１の実施の形態を示す車両用回転電機の断面図Sectional drawing of the rotary electric machine for vehicles which shows the 1st Embodiment of this invention 第１の実施の形態に係る通風ファンの断面、正面図Cross section and front view of ventilation fan according to first embodiment 通風ファンの断面における冷却風の流れ図Flow chart of cooling air in cross section of ventilation fan 第２の実施の形態を示す車両用回転電機の通風ファンの断面、正面図Sectional view and front view of ventilation fan of rotating electrical machine for vehicle showing second embodiment 第３の実施の形態を示す車両用回転電機の通風ファンの断面、正面図Cross section and front view of ventilation fan of rotating electrical machine for vehicle showing third embodiment 第４の実施の形態を示す車両用回転電機の通風ファンの断面、正面図Sectional view and front view of ventilation fan of rotating electrical machine for vehicle showing fourth embodiment 第５の実施の形態を示す車両用回転電機の通風ファンの断面、正面図Sectional view and front view of ventilation fan of rotating electrical machine for vehicle showing fifth embodiment 第６の実施の形態例を示す車両用回転電機の断面図Sectional drawing of the rotary electric machine for vehicles which shows 6th Embodiment 第６の実施の形態を示す車両用回転電機の通風ファンの断面、正面図Sectional view and front view of ventilation fan of rotating electrical machine for vehicle showing sixth embodiment 第７の実施の形態を示す車両用回転電機の通風ファンの断面、正面図Cross section and front view of ventilation fan of rotary electric machine for vehicle showing seventh embodiment 従来の車両用回転電機の断面図Sectional view of a conventional vehicle rotating electrical machine 同従来の通風ファンの正面図Front view of the conventional ventilation fan

符号の説明Explanation of symbols

１…フレーム、２…ステータ鉄心（固定子）、４…ステータコイル、７…シャフト（回転子軸）、８…ロータ鉄心（回転子）、８ａ…通風穴、１２…冷却材導入口、１３…排風口、１４、１９…通風ファン、１７…案内板、１６、２１…主板、１８、２２…羽根、２３…通風孔、２４…円筒リング。 DESCRIPTION OF SYMBOLS 1 ... Frame, 2 ... Stator iron core (stator), 4 ... Stator coil, 7 ... Shaft (rotor shaft), 8 ... Rotor iron core (rotor), 8a ... Ventilation hole, 12 ... Coolant introduction port, 13 ... Exhaust port, 14, 19 ... ventilation fan, 17 ... guide plate, 16, 21 ... main plate, 18, 22 ... blade, 23 ... ventilation hole, 24 ... cylindrical ring.

Claims

回転電機の回転シャフトに固定した通風ファンの回転により、フレームの軸方向一端の冷却風導入口から冷却風を前記回転電機内に取り入れ、この冷却風を前記回転電機内に流通させて他端側排風口より前記回転電機外に排気する車両用自己通風冷却形主電動機において、前記通風ファンの主板に羽根を放射状に複数枚配設するとともに前記主板に通風孔を配設したことを特徴とする車両用自己通風冷却形回転電機。 By rotating a ventilation fan fixed to the rotating shaft of the rotating electrical machine, cooling air is taken into the rotating electrical machine from the cooling air introducing port at one end in the axial direction of the frame, and this cooling air is circulated through the rotating electrical machine to the other end side. In a self-ventilated cooling main motor for a vehicle that exhausts air to the outside of the rotating electrical machine through an exhaust port, a plurality of blades are arranged radially on the main plate of the ventilation fan, and ventilation holes are arranged on the main plate. Self-ventilated cooling rotary electric machine for vehicles.

前記通風孔を複数配設したことを特徴とする請求項１記載の車両用自己通風冷却形回転電機。 The self-ventilated cooling rotary electric machine for vehicles according to claim 1, wherein a plurality of the ventilation holes are provided.

前記通風孔を傾斜して配設したことを特徴とする請求項１又は２記載の車両用自己通風冷却形回転電機。 The self-ventilated cooling type rotating electrical machine for a vehicle according to claim 1 or 2, wherein the ventilation holes are inclined.

前記通気孔を２段以上配設したことを特徴とする請求項１乃至３記載の車両用自己通風冷却形回転電機。 4. The self-ventilated cooling type rotating electrical machine for a vehicle according to claim 1, wherein the vent holes are arranged in two or more stages.

前記通風孔の形状を丸穴、楕円穴または角穴とすることを特徴とする請求項１乃至４記載の車両用自己通風冷却形回転電機。 The self-ventilated cooling type rotating electrical machine for a vehicle according to claim 1, wherein the shape of the ventilation hole is a round hole, an elliptical hole, or a square hole.

前記回転子側の冷却風吸出し口に円筒リングを設けることを特徴とする請求項１乃至５の車両用自己通風冷却形回転電機。 6. A self-ventilated cooling type rotating electrical machine for a vehicle according to claim 1, wherein a cylindrical ring is provided at the cooling air suction port on the rotor side.

前記通風孔を、回転子と固定子との間のギャップと同一の径の位置に配設することを特徴とする請求項１乃至６の車両用自己通風冷却形回転電機。 The self-ventilated cooling type rotating electrical machine for a vehicle according to claim 1, wherein the ventilation hole is disposed at a position having the same diameter as the gap between the rotor and the stator.

回転電機の回転シャフトに固定した通風ファンの回転により、フレームの軸方向一端の冷却風導入口から冷却風を前記回転電機内に取り入れ、この冷却風を前記回転電機内に流通させて他端側排風口より前記回転電機外に排気する車両用自己通風冷却形主電動機において、前記通風ファンを回転子に直付けするとともに、前記通風ファンの主板に羽根を放射状に複数枚配設し、かつ、回転子の通風穴に連通する通風孔を前記主板に配設したことを特徴とする車両用自己通風冷却形回転電機。 By rotating a ventilation fan fixed to the rotating shaft of the rotating electrical machine, cooling air is taken into the rotating electrical machine from the cooling air introducing port at one end in the axial direction of the frame, and this cooling air is circulated through the rotating electrical machine to the other end side. In a self-ventilated cooling main motor for a vehicle that exhausts out of the rotating electrical machine from an exhaust port, the ventilation fan is directly attached to the rotor, and a plurality of blades are radially disposed on the main plate of the ventilation fan, and A self-ventilated cooling type rotating electrical machine for vehicles, wherein a ventilation hole communicating with a ventilation hole of a rotor is provided in the main plate.

前記回転子の通風穴に連通する通風孔とは別個に、複数の通風孔を前記主板に配設したことを特徴とする請求項８記載の車両用自己通風冷却形回転電機。 9. The self-ventilated cooling type rotating electrical machine for a vehicle according to claim 8, wherein a plurality of ventilation holes are provided in the main plate separately from the ventilation holes communicating with the ventilation holes of the rotor.

前記通風孔を傾斜して配設したことを特徴とする請求項８または９記載の車両用自己通風冷却形回転電機。 The self-ventilated cooling type rotating electrical machine for a vehicle according to claim 8 or 9, wherein the ventilation holes are inclined.

冷却風を排気する排風口をフレームに配設することを特徴とする請求項１乃至１０記載の車両用自己通風冷却形回転電機。

The self-ventilated cooling type rotating electrical machine for a vehicle according to claim 1, wherein an exhaust port for exhausting the cooling air is provided in the frame.