JPH0956118A - Forced-air cooling motor - Google Patents
Forced-air cooling motorInfo
- Publication number
- JPH0956118A JPH0956118A JP21148595A JP21148595A JPH0956118A JP H0956118 A JPH0956118 A JP H0956118A JP 21148595 A JP21148595 A JP 21148595A JP 21148595 A JP21148595 A JP 21148595A JP H0956118 A JPH0956118 A JP H0956118A
- Authority
- JP
- Japan
- Prior art keywords
- electric motor
- fan device
- air
- axial direction
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は強制通風冷却形電動
機に関し、冷却機構に工夫をしたものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forced draft cooling type electric motor in which a cooling mechanism is devised.
【０００２】[0002]
【従来の技術】回転数の低い電動機や、始動停止が頻繁
に行なわれる可変速電動機や、一定速運転でも発熱の大
きい電動機では、自冷ファンを用いたのでは冷却能力が
不足するので、一般には強制通風冷却形電動機となって
いる。2. Description of the Related Art Motors with low rotation speeds, variable speed motors that are frequently started and stopped, and motors that generate a large amount of heat even at constant speed operation generally lack the cooling capacity if a self-cooling fan is used. Is a forced draft cooling type electric motor.
【０００３】ここで従来の強制通風冷却形電動機の一例
を、正面側から見た断面図である図１７及び側面図であ
る図１８を基に説明する。この強制通風冷却形電動機
は、電動機１０にブロワー３０を備えた構成、つまりブ
ロワー付電動機となっている。Here, an example of a conventional forced draft cooling type electric motor will be described with reference to FIG. 17 which is a sectional view seen from the front side and FIG. 18 which is a side view. This forced draft cooling type electric motor has a structure in which the electric motor 10 is provided with a blower 30, that is, an electric motor with a blower.
【０００４】電動機１０では、両端面となる反連結側ブ
ラケット１１，連結側ブラケット１２及び周面のフレー
ム１３により外部フレームが構成されている。回転軸１
４は軸受１５，１６により回転自在に支持されており、
回転軸１４にロータ鉄心１７が備えられている。フレー
ム１３の内周面にはステータ鉄心１８が備えられてお
り、ステータ鉄心１８の反連結側端面からは反連結側コ
イル１９ａが出ており、連結側端面からは連結側コイル
１９ｂが出ている。なおフレーム１３の反連結側上部に
は吹込口２０が形成され、フレーム１３の連結側下部に
は排気口２１が形成されている。In the electric motor 10, the outer frame is constituted by the anti-connection side bracket 11, the connection side bracket 12, and the frame 13 on the peripheral surface which are both end surfaces. Rotary axis 1
4 is rotatably supported by bearings 15 and 16,
A rotor iron core 17 is provided on the rotating shaft 14. A stator iron core 18 is provided on the inner peripheral surface of the frame 13, an anti-coupling side coil 19a extends from the anti-coupling side end surface of the stator iron core 18, and a coupling side coil 19b extends from the coupling side end surface. . A blow-in port 20 is formed in the upper portion of the frame 13 opposite to the connection side, and an exhaust port 21 is formed in the lower portion of the frame 13 on the connection side.
【０００５】ブロワー３０は、フレーム１３の吹込口２
０に連結した状態で取り付けられており、吸込口３１か
ら吸い込んだ空気を吹込口２０を通して電動機１０内部
に吹き込む。吹き込まれた空気は図中矢印で示すように
流れて、巻線（コイル１９ａ，１９ｂや回転子コイル）
や鉄心１７，１８を冷却して排気口２１から排気され
る。The blower 30 has a blow-in port 2 of the frame 13.
It is attached in a state of being connected to 0, and blows the air sucked from the suction port 31 into the electric motor 10 through the blow port 20. The blown air flows as shown by the arrows in the figure, and the windings (coils 19a, 19b and rotor coil)
The iron cores 17 and 18 are cooled and exhausted from the exhaust port 21.
【０００６】冷却媒体である空気の流れに沿い冷却状態
を説明すると、まず外気温度と等しい温度となった空気
は、ブロワー３０の吸込口３１から吸い込まれ、吹出口
２０から吹き出される。吹き出された空気は反連結側コ
イル１９ａや鉄心１７，１８の反連結側の端面に当た
り、これら部材から熱をうばい冷却する。次に空気は、
ステータ鉄心１８の外周部のダクトや、ステータ鉄心１
８とロータ鉄心１７との間を、軸方向に移動しつつこれ
ら部材を冷却する。更に連結側コイル１９ｂから熱をう
ばい、熱くなった空気は排気口２１を介して外部に排出
される。冷却用空気は、モータ１０内で送られるにした
がい、温度が上昇していく。The cooling state will be described along the flow of air as a cooling medium. First, the air having a temperature equal to the outside air temperature is sucked from the suction port 31 of the blower 30 and blown out from the blowing port 20. The blown air hits the anti-coupling side coil 19a and the end faces of the iron cores 17 and 18 on the anti-coupling side, and cools the heat from these members. Then the air
The duct around the outer periphery of the stator core 18 and the stator core 1
These members are cooled while moving axially between the rotor 8 and the rotor core 17. Further, the heat from the connecting side coil 19b is dissipated and the heated air is discharged to the outside through the exhaust port 21. The temperature of the cooling air increases as it is sent in the motor 10.
【０００７】ところで上述した図１７及び図１８に示す
ブロワー付電動機では通風路が長く屈曲が多いため通風
抵抗が大きくなり、比較的高い静圧が必要である。ま
た、冷却通路が長いため空気の温度が上がり冷却能力が
低下する。これを防止するために風量を増加する必要が
あった。この２つの理由で静圧が高く、風量の多いブロ
ワー３０を使用する必要があり、次の様な欠点が有っ
た。 （１）静圧が高く、風量が多いブロワーを用いるため騒
音が大きい。 （２）ブロワーの寸法が大きいため、ブロワー付電動機
の寸法は大きくなる。 （３）ブロワーの価格が高く、ブロワー付電動機が高額
になってしまう。By the way, in the electric motor with a blower shown in FIGS. 17 and 18 described above, since the ventilation passage is long and has many bends, the ventilation resistance becomes large and a relatively high static pressure is required. Further, since the cooling passage is long, the temperature of the air rises and the cooling capacity decreases. It was necessary to increase the air volume to prevent this. For these two reasons, it is necessary to use the blower 30 having a high static pressure and a large amount of air flow, which has the following drawbacks. (1) Noise is loud because a blower with a high static pressure and a large air volume is used. (2) The size of the blower motor is large because the size of the blower is large. (3) The price of the blower is high, and the electric motor with the blower becomes expensive.
【０００８】本願発明者は、上記実状に鑑み、充分な冷
却能力を保持しつつ上記（１）（２）（３）の欠点を克
服した強制通風冷却形電動機を先に開発して出願した
（特願平５−２９４８５１号）。In view of the above situation, the inventor of the present invention first developed and filed a forced draft cooling type electric motor which has overcome the drawbacks of (1), (2) and (3) while maintaining sufficient cooling capacity ( Japanese Patent Application No. 5-294851).
【０００９】ここで先に出願した特願平５−２９４８５
１号に示した技術を説明する。なお図１７及び図１８に
示す技術と同一機能をはたす部分には同一符号を付して
説明する。Japanese Patent Application No. 5-29485 filed earlier here
The technique shown in No. 1 will be described. It should be noted that parts having the same functions as those of the technique shown in FIGS.
【００１０】図１９は先に出願した強制通風冷却形電動
機を示す縦断面図（図２０のＢ，Ｃ，Ｄ，Ｅに沿う断面
図）、図２０は横断面図（図１９のＡ−Ａ断面図）であ
る。両図に示すように電動機１０では、ブラケット１
１，１２及びフレーム１３により外部フレームが構成さ
れており、軸受１５，１６で軸支した回転軸１４にロー
タ鉄心１７を備えている。フレーム１３の内周面には、
コイル１９ａ，１９ｂを有するステータ鉄心１８を備え
ている。なおフレーム１３の外周面にはフィン１３ａを
形成している。FIG. 19 is a longitudinal sectional view (sectional view taken along the lines B, C, D and E of FIG. 20) showing the forced draft cooling type electric motor filed previously, and FIG. 20 is a transverse sectional view (AA of FIG. 19). FIG. As shown in both figures, in the electric motor 10, the bracket 1
1, 12 and the frame 13 constitute an outer frame, and a rotor shaft 17 supported by bearings 15 and 16 is provided with a rotor core 17. On the inner peripheral surface of the frame 13,
A stator iron core 18 having coils 19a and 19b is provided. A fin 13a is formed on the outer peripheral surface of the frame 13.
【００１１】２つのファン４０，４１は軸方向に並んだ
状態でフレーム１３の外周に取り付けられており、ファ
ン４０は反連結側に位置し、ファン４１は連結側に位置
している。そしてファン４０，４１により送った空気
が、フレーム１３に軸方向に並んで形成した吹込口４
２，４３を介して電動機１０内に入るようにしている。
一方、フレーム１３には軸方向に並んだ状態で排気口４
４，４５が形成されており、排気口４４は反連結側に位
置し、排気口４５は連結側に位置している。しかも排気
口４４，４５は、フレーム１３の周方向に沿い、ファン
４０，４１に対してほぼ反対側に位置している。また垂
直方向（上下方向）に関してはファン４０，４１が下方
に位置し、排気口４４，４５が上方に位置している。The two fans 40 and 41 are mounted on the outer periphery of the frame 13 in a state of being lined up in the axial direction. The fan 40 is located on the anti-coupling side and the fan 41 is located on the coupling side. The air blown by the fans 40 and 41 is formed in the frame 13 so as to be aligned in the axial direction.
It enters into the electric motor 10 via 2, 43.
On the other hand, the exhaust ports 4 are arranged on the frame 13 in a line in the axial direction.
4, 45 are formed, the exhaust port 44 is located on the anti-connection side, and the exhaust port 45 is located on the connection side. Moreover, the exhaust ports 44 and 45 are located along the circumferential direction of the frame 13 and substantially opposite to the fans 40 and 41. Further, in the vertical direction (vertical direction), the fans 40 and 41 are located below and the exhaust ports 44 and 45 are located above.
【００１２】本例ではファン４０，４１が作動すること
により強制冷却を行うことができる。即ち、ファン４０
により外部から取り込まれ吹込口４２を介してモータ１
０内に送り込まれた空気は、径方向に流れ主に反連結側
コイル１９ａや鉄心１７，１８の反連結側部分に当たっ
てこれら部材から熱をうばって冷却し、熱くなった空気
は排気口４４を通って外部に排出される。またファン４
１により外部から取り込まれ吹込口４３を介してモータ
１０内に送り込まれた空気は、径方向に流れ更に連結側
コイル１９ｂや鉄心１７，１８の連結側部分に当ってこ
れら部材から熱をうばって冷却し、熱くなった空気は排
気口４５を通って外部に排出される。更にファン４０，
４１が下方に位置し、排気口４４，４５が上方に位置す
るので、自然対流による冷却効果も付加されて冷却が行
なわれる。In this example, forced cooling can be performed by operating the fans 40 and 41. That is, the fan 40
Is taken in from the outside by the motor 1 through the blow-in port 42.
The air sent into 0 flows mainly in the radial direction and hits the anti-coupling side coil 19a and the anti-coupling side parts of the iron cores 17 and 18 to cool the heat from these members, and the heated air passes through the exhaust port 44. It passes through and is discharged to the outside. Also fan 4
The air taken in from the outside by 1 and sent into the motor 10 through the blow-in port 43 flows in the radial direction and further hits the connecting side coil 19b and the connecting side portions of the iron cores 17 and 18 to dissipate heat from these members. The cooled and hot air is discharged to the outside through the exhaust port 45. Fan 40,
Since 41 is located below and exhaust ports 44 and 45 are located above, cooling is performed by adding a cooling effect by natural convection.
【００１３】また、ステータ鉄心１８の熱はその外周か
らフレーム１３に伝導し、フレーム１３のフィン１３ａ
から放熱する。Further, the heat of the stator iron core 18 is conducted to the frame 13 from the outer circumference thereof, and the fins 13a of the frame 13 are conducted.
Radiates heat from.
【００１４】このように本例ではモータ１０の反連結側
と連結側を別々のファン４０，４１で冷却して空気を径
方向に送るようにしたので、冷却空気の流通経路の長さ
は従来に比べ大幅に減少し、流面経路の屈曲が少なく通
風抵抗が小さくなる。よってファン４０，４１として
は、例えばプロペラファンなど風圧の低いものを使用し
ても、充分な冷却能力が得られる。As described above, in the present embodiment, the anti-connection side and the connection side of the motor 10 are cooled by the separate fans 40 and 41 to send the air in the radial direction. Compared with, the flow surface path is less bent and the ventilation resistance is smaller. Therefore, as the fans 40 and 41, even if a fan having a low wind pressure such as a propeller fan is used, sufficient cooling capacity can be obtained.
【００１５】ファン４０，４１の価格は一般に安いた
め、高価な１つのブロワーを用いるよりも、２つのファ
ン４０，４１を用いた方がコストダウンになる。Since the costs of the fans 40 and 41 are generally low, the cost can be reduced by using the two fans 40 and 41 rather than by using one expensive blower.
【００１６】結局、先願（特願平５−２９４８５１号）
によれば、２つのファンにより、空気をモータ内で径方
向に送り、モータの反連結側部分と連結側部分とを分け
て冷却するようにしたので、冷却空気の流通経路長が大
幅に短くなりしかも流通経路の屈曲が小さくなり、通風
抵抗が少なくなる。また空気の温度上昇が少なくなり冷
却能力の低下が少ないため、風量も少なくて良い。従っ
て下記の利点が有る。 通風抵抗が少ないので低い静圧で通風でき、風圧の低
い小形のファンが使用できるので、電動機とファンを合
わせた全体の寸法が小さくなる。 静圧が低く、風量も少ないためファンによる騒音が大
幅に小さくなる。 従来のブロワー１個より、本発明に使用するファン２
個の方が価格が安い。よって全体的にコストダウンがで
きる。After all, the prior application (Japanese Patent Application No. 5-294851)
According to this, since the two fans send air in the radial direction in the motor to separately cool the non-connecting side portion and the connecting side portion of the motor, the length of the circulation path of the cooling air is significantly shortened. Moreover, the bending of the distribution channel is reduced, and the ventilation resistance is reduced. Further, since the temperature rise of the air is small and the cooling capacity is not deteriorated so much, the air volume may be small. Therefore, there are the following advantages. Since there is little ventilation resistance, it is possible to ventilate at a low static pressure, and a small fan with low air pressure can be used, so the overall size of the electric motor and fan is reduced. Since the static pressure is low and the air volume is low, the noise from the fan is significantly reduced. Fan 2 used in the present invention rather than one conventional blower
The price is cheaper for each. Therefore, the cost can be reduced as a whole.
【００１７】[0017]
【発明が解決しようとする課題】上述した先願（特願平
５−２９４８５１号）によれば、ロータ鉄心１７の端部
や、ステータ鉄心１８の端部や、コイル１９ａ，１９ｂ
は強制通風冷却されるので、これら部分での冷却性は高
い。しかし、先願では次のような課題が残っていた。According to the above-mentioned prior application (Japanese Patent Application No. 5-294851), the end portion of the rotor core 17, the end portion of the stator core 18, the coils 19a, 19b.
Is cooled by forced draft, so the cooling performance in these parts is high. However, the following issues remained in the earlier application.
【００１８】即ち、先願では、軸方向に沿い流れる通風
が無いため次のような問題が残っていた。 ［１］フレーム１３の外被は、輻射と自然対流で放熱し
ており、冷却性が低い。ロータ鉄心１７の外周面（外径
面）及びステータ鉄心１８の内周面（内径面）は、通風
が無く、冷却性が低い。 ［２］フレーム１３には、コイル１９ａ，１９ｂとステ
ータ鉄心１８から熱が伝導しやすいのに対して、冷却性
が低いことから、フレーム１３の温度は、最も温度の高
いコイル温度に近づいていく。したがって、小型軽量化
等のために許容温度の高い絶縁物を使用して、コイル１
９ａ，１９ｂの許容温度を上げると、フレーム１３の外
被温度が高くなり、人が触れると安全性の点で問題にな
るおそれがある。 ［３］小型軽量化等のために許容温度の高い絶縁物を使
用した場合、ロータ鉄心１７→回転軸１４→軸受１５，
１６という経路に沿い熱が伝導し、軸受１５，１６の温
度が許容値を越えるおそれがあった。That is, in the prior application, the following problems remain because there is no ventilation flowing along the axial direction. [1] The outer cover of the frame 13 radiates heat by radiation and natural convection, and has a low cooling property. The outer peripheral surface (outer diameter surface) of the rotor iron core 17 and the inner peripheral surface (inner diameter surface) of the stator iron core 18 have no ventilation and have low cooling performance. [2] In the frame 13, heat is easily conducted from the coils 19a and 19b and the stator core 18, but the cooling property is low. Therefore, the temperature of the frame 13 approaches the highest coil temperature. . Therefore, in order to reduce the size and weight of the coil 1
If the permissible temperatures of 9a and 19b are increased, the outer temperature of the frame 13 becomes high, which may cause a problem in terms of safety when touched by a person. [3] When an insulator having a high allowable temperature is used for downsizing and weight reduction, the rotor core 17 → the rotating shaft 14 → the bearing 15,
There is a risk that heat will be conducted along the route of 16 and the temperature of the bearings 15 and 16 will exceed the allowable value.
【００１９】本発明は、上記従来技術に鑑み、冷却性を
向上させた強制通風冷却形電動機を提供することを目的
とする。The present invention has been made in view of the above-mentioned prior art, and an object thereof is to provide a forced draft cooling type electric motor having improved cooling performance.
【００２０】[0020]
【課題を解決するための手段】上記課題を解決する本発
明の構成は、電動機のフレームに、外部空気を電動機内
部に送り込む第１のファン装置と第２のファン装置を備
え、しかも第１のファン装置は軸方向に関し電動機内部
の一方の側の部分に送風する位置に配されると共に送風
量が第２のファン装置の送風量よりも多く、第２のファ
ン装置は軸方向に関し電動機内部の他方の側の部分に送
風する位置に配されていることを特徴とする。The structure of the present invention for solving the above-mentioned problems is provided with a first fan device and a second fan device for feeding external air into the inside of the electric motor in a frame of the electric motor, and further, the first fan device. The fan device is arranged at a position where air is blown to a portion on one side inside the electric motor in the axial direction, and the air blowing amount is larger than the air blowing amount of the second fan device. It is characterized in that it is arranged at a position where air is blown to the part on the other side.
【００２１】また本発明の構成は、電動機のフレーム
に、外部空気を電動機内部に送り込む第１のファン装置
と第２のファン装置を備え、しかも第１のファン装置は
軸方向に関し電動機内部の一方の側の部分に送風する位
置に配されると共に送風量が第２のファン装置の送風量
よりも多く、第２のファン装置は軸方向に関し電動機内
部の他方の側の部分に送風する位置に配されており、更
に電動機の固定子には軸方向に伸びる複数本の通風孔が
形成されていることを特徴とする。Further, according to the structure of the present invention, the frame of the electric motor is provided with the first fan device and the second fan device for feeding the external air into the electric motor, and the first fan device is one of the internal parts of the electric motor in the axial direction. Is located at a position where air is blown to a portion on the side of the second fan device, and the amount of air blow is larger than that of the second fan device, and the second fan device is placed at a position where air is blown to a portion on the other side inside the electric motor in the axial direction. A plurality of ventilation holes extending in the axial direction are formed in the stator of the electric motor.
【００２２】また本発明の構成は、電動機のフレーム
に、外部空気を電動機内部に送り込む第１のファン装置
と第２のファン装置を備え、しかも第１のファン装置は
軸方向に関し電動機内部の一方の側の部分に送風する位
置に配されると共に送風量が第２のファン装置の送風量
よりも多く、第２のファン装置は軸方向に関し電動機内
部の他方の側の部分に送風する位置に配されており、更
に電動機の回転子には軸方向に伸びる複数本の通風孔が
形成されていることを特徴とする。According to the structure of the present invention, the frame of the electric motor is provided with the first fan device and the second fan device for sending the external air into the electric motor, and the first fan device is one of the internal parts of the electric motor in the axial direction. Is located at a position where air is blown to a portion on the side of the second fan device, and the amount of air blow is larger than that of the second fan device, and the second fan device is placed at a position where air is blown to a portion on the other side inside the electric motor in the axial direction. And a plurality of ventilation holes extending in the axial direction are formed in the rotor of the electric motor.
【００２３】また本発明の構成は、電動機のフレーム
に、外部空気を電動機内部に送り込むファン装置を備
え、しかも前記ファン装置は軸方向に関し中央位置から
ずれた位置に配されていることを特徴とする。Further, the structure of the present invention is characterized in that the frame of the electric motor is provided with a fan device for sending the outside air into the electric motor, and the fan device is arranged at a position displaced from the central position in the axial direction. To do.
【００２４】本発明では電動機内部の一方の側及び他方
の側をファン装置の送風により冷却すると共に、一方の
側を他方の側に比べて風圧を高くするようにしたため、
一方の側から他方の側に向い軸方向に沿い空気が流れて
冷却が行なわれる。In the present invention, one side and the other side inside the electric motor are cooled by blowing air from the fan device, and one side is made to have a higher wind pressure than the other side.
Air flows along the axial direction from one side to the other side for cooling.
【００２５】[0025]
【発明の実施の形態】以下に本発明の実施例を図面に基
づき詳細に説明する。なお従来技術と同一機能を果す部
分には同一符号を付し重複する説明は省略する。Embodiments of the present invention will be described below in detail with reference to the drawings. The parts having the same functions as those of the conventional technique are designated by the same reference numerals, and the duplicated description will be omitted.
【００２６】本発明の第１実施例を、横断面図である図
１及び縦断面図である図２を参照して説明する。両図に
示すように電動機１０では、ブラケット１１，１２及び
フレーム１３により外部フレームが構成されており、軸
受１５，１６で軸支した回転軸１４にロータ鉄心１７を
備えている。フレーム１３の内周面には、コイル１９
ａ，１９ｂを有するステータ鉄心１８を備えている。A first embodiment of the present invention will be described with reference to FIG. 1 which is a cross sectional view and FIG. 2 which is a vertical sectional view. As shown in both figures, in the electric motor 10, an outer frame is configured by the brackets 11 and 12 and the frame 13, and a rotor shaft 17 supported by bearings 15 and 16 is provided with a rotor iron core 17. A coil 19 is provided on the inner peripheral surface of the frame 13.
A stator core 18 having a and 19b is provided.
【００２７】２つのファン５０，５１でなるファン装置
は、反連結側において、周方向に並んでフレーム１３の
外周に取り付けられており、１つのファン５２でなるフ
ァン装置は、ファン５０，５１に対して軸方向に並んだ
状態でフレーム１３の外周に取り付けられている。ファ
ン５０，５１，５２の各々の送風能力は同一であるが、
反連結側には２つのファン５０，５１を備えているた
め、連結側に比べて反連結側の送風量が多くなってい
る。そしてフレーム１３には、ファン５０，５１に対応
して吹込口６０，６１が形成され、ファン５２に対応し
て吹込口６２が形成され、更に周方向に関し吹込口６
０，６１，６２とほぼ反対位置に排気口７０が形成され
ている。The fan device composed of the two fans 50 and 51 is attached to the outer periphery of the frame 13 side by side in the circumferential direction on the anti-coupling side, and the fan device composed of one fan 52 is attached to the fans 50 and 51. On the other hand, they are attached to the outer periphery of the frame 13 in a state of being lined up in the axial direction. The fans 50, 51, 52 have the same blowing capacity,
Since the two fans 50 and 51 are provided on the anti-connection side, the amount of air blown on the anti-connection side is larger than that on the connection side. In the frame 13, blow ports 60 and 61 are formed corresponding to the fans 50 and 51, blow ports 62 are formed corresponding to the fan 52, and the blow port 6 is further formed in the circumferential direction.
An exhaust port 70 is formed at a position substantially opposite to 0, 61, 62.
【００２８】本実施例ではファン５０，５１，５２が作
動することにより強制冷却を行うことができる。即ち、
ファン５０，５１により外部から取り込まれ吹込口６
０，６１を介してモータ１０内に送り込まれた空気の一
部は、径方向に流れ主に反連結側コイル１９ａや鉄心１
７，１８の反連結側部分に当たってこれら部材から熱を
うばって冷却し、熱くなった空気は排気口７０を通って
外部に排出される。またファン５２により外部から取り
込まれ吹込口６２を介してモータ１０内に送り込まれた
空気は、径方向に流れ更に連結側コイル１９ｂや鉄心１
７，１８の連結側部分に当ってこれら部材から熱をうば
って冷却し、熱くなった空気は排気口７０を通って外部
に排出される。In this embodiment, forced cooling can be performed by operating the fans 50, 51 and 52. That is,
Blow-in port 6 taken in from outside by fans 50 and 51
A part of the air sent into the motor 10 through 0, 61 flows in the radial direction, and mainly the anti-coupling side coil 19a and the iron core 1
The air that hits the anti-connection side portions of 7, 7 is cooled by receiving heat from these members, and the heated air is discharged to the outside through the exhaust port 70. Further, the air taken in from the outside by the fan 52 and sent into the motor 10 through the blowing port 62 flows in the radial direction, and further, the connecting side coil 19b and the iron core 1 are inserted.
The air hitting the connecting side portions of the members 7 and 18 is cooled by receiving heat from these members, and the heated air is discharged to the outside through the exhaust port 70.
【００２９】更に、２つのファン５０，５１による反連
結側の送風量（風圧）は、１つのファン５２による連結
側の送風量（風圧）よりも大きく風圧差があるため、電
動機１０のロータ鉄心１７の外周面とステータ鉄心１８
の内周面との間のギャップには、反連結側から連結側に
向い軸方向に空気が流れる。したがって、一次銅損の発
生源であるコイル１９ａ，１９ｂに近いステータ鉄心１
８の内周面及び、二次銅損の発生源である二次銅体に近
いロータ鉄心１７の外周面に対して、効果的な冷却が実
行でき、冷却性能が向上する。Further, since the amount of air blown (wind pressure) by the two fans 50, 51 on the side opposite to the connection side is larger than the amount of air blow (wind pressure) by the side of one fan 52 on the connection side, the rotor core of the electric motor 10 17 outer peripheral surface and stator core 18
Air flows in the gap between the inner peripheral surface and the inner peripheral surface in the axial direction from the anti-coupling side to the coupling side. Therefore, the stator core 1 close to the coils 19a and 19b, which are the sources of the primary copper loss,
The inner peripheral surface of No. 8 and the outer peripheral surface of the rotor core 17 near the secondary copper body that is the source of the secondary copper loss can be effectively cooled and the cooling performance is improved.
【００３０】次に図３，図４を参照して第２実施例を、
図５，図６を参照して第３実施例を、図７，図８を参照
して第４実施例を説明する。これら第２，第３，第４実
施例は、基本構成は第１実施例と同じであるが、固定子
に通風孔８０，８１，８２に備えたことが第１実施例と
異なる。Next, referring to FIGS. 3 and 4, the second embodiment will be described.
A third embodiment will be described with reference to FIGS. 5 and 6, and a fourth embodiment will be described with reference to FIGS. The second, third, and fourth embodiments have the same basic structure as the first embodiment, but differ from the first embodiment in that the stator is provided with ventilation holes 80, 81, and 82.
【００３１】第２実施例では図３，図４に示すように、
ステータ鉄心１８に、軸方向に伸びる複数個の通風孔８
０を形成している。第３実施例では図５，図６に示すよ
うに、フレーム１３の外周面に軸方向に伸びる複数個の
溝を形成することにより、フレーム１３とステータ鉄心
１８の間に、軸方向に伸びる複数個の通風孔８１を形成
している。第４実施例では図７，図８に示すように、ス
テータ鉄心１８の外周面に軸方向に伸びる複数個の溝を
形成することにより、フレーム１３とステータ鉄心１８
の間に、軸方向に伸びる複数個の通風孔８２を形成して
いる。In the second embodiment, as shown in FIGS.
The stator core 18 has a plurality of ventilation holes 8 extending in the axial direction.
0 is formed. In the third embodiment, as shown in FIGS. 5 and 6, a plurality of grooves extending in the axial direction are formed between the frame 13 and the stator core 18 by forming a plurality of grooves extending in the axial direction on the outer peripheral surface of the frame 13. The individual ventilation holes 81 are formed. In the fourth embodiment, as shown in FIGS. 7 and 8, by forming a plurality of grooves extending in the axial direction on the outer peripheral surface of the stator iron core 18, the frame 13 and the stator iron core 18 are formed.
A plurality of ventilation holes 82 extending in the axial direction are formed in the space.
【００３２】このような第２，第３，第４実施例では、
反連結側から連結側に向い通風孔８０，８１，８２の中
を空気が流れるので、ステータ鉄心１８やフレーム１３
の冷却を更に効果的に実行することができる。そしてコ
イル１９ａ，１９ｂからステータ鉄心１８を通りフレー
ム１３の表面に伝達する熱を低減させ、フレーム１３の
表面温度を低減することができる。In the second, third and fourth embodiments as described above,
Since air flows through the ventilation holes 80, 81, 82 facing from the non-coupling side to the coupling side, the stator core 18 and the frame 13
Can be more effectively performed. The heat transmitted from the coils 19a and 19b to the surface of the frame 13 through the stator core 18 can be reduced, and the surface temperature of the frame 13 can be reduced.
【００３３】次に図９，図１０を参照して第５実施例
を、図１１，図１２を参照して第６実施例を説明する。
第５，第６実施例は、基本構成は第１実施例と同じであ
るが、回転子に通風孔９０，９１を備えたことが第１実
施例と異なる。Next, a fifth embodiment will be described with reference to FIGS. 9 and 10, and a sixth embodiment will be described with reference to FIGS.
The fifth and sixth embodiments have the same basic configuration as the first embodiment, but differ from the first embodiment in that the rotor is provided with ventilation holes 90, 91.
【００３４】第５実施例では図９，図１０に示すように
断面円形で軸方向に伸びる複数本の通風孔９０をロータ
鉄心１７に形成している。第６実施例では図１１，図１
２に示すように断面扇形で軸方向に伸びる複数本の通風
孔９１をロータ鉄心１７に形成している。したがって第
５，第６実施例では、反連結側から連結側に向い通風孔
９０，９１の中を空気が流れるのでロータ鉄心１７の冷
却を更に効果的に実行することができる。そして二次銅
体→ロータ鉄心１７→回転軸１４→軸受１５，１６とい
う経路に沿い伝わる熱を低減して、軸受１５，１６の温
度を低減させることができる。In the fifth embodiment, as shown in FIGS. 9 and 10, a plurality of ventilation holes 90 having a circular cross section and extending in the axial direction are formed in the rotor core 17. 11 and 1 in the sixth embodiment.
As shown in FIG. 2, a plurality of ventilation holes 91 having a fan-shaped cross section and extending in the axial direction are formed in the rotor iron core 17. Therefore, in the fifth and sixth embodiments, the air flows through the ventilation holes 90, 91 from the non-coupling side to the coupling side, so that the cooling of the rotor core 17 can be more effectively performed. Then, the heat transmitted along the path of the secondary copper body → the rotor core 17 → the rotating shaft 14 → the bearings 15 and 16 can be reduced, and the temperature of the bearings 15 and 16 can be reduced.
【００３５】次に、本発明の第７実施例を、横断面図で
ある図１３及び縦断面図である図１４を参照して説明す
る。第７実施例では、反連結側に送風量の大きいファン
（ファン装置）５３を備え、連結側に送風量の小さいフ
ァン（ファン装置）５４を備えている。そしてファン５
３，５４による空気を吹込口６３，６４を介して送風す
ることにより、第１実施例と同様に、空気は径方向に流
れると共に、反連結側から連結側に向いギャップ中を軸
方向に流れて効果的な冷却ができる。Next, a seventh embodiment of the present invention will be described with reference to FIG. 13 which is a transverse sectional view and FIG. 14 which is a longitudinal sectional view. In the seventh embodiment, a fan (fan device) 53 having a large air flow rate is provided on the non-connection side, and a fan (fan device) 54 having a small air flow rate is provided on the connection side. And fan 5
By blowing the air from the blowers 3, 54 through the blow ports 63, 64, the air flows in the radial direction as well as in the first embodiment, and also flows in the axial direction in the gap from the non-coupling side to the coupling side. And effective cooling is possible.
【００３６】次に本発明の第８実施例を、横断面図であ
る第１５図及び縦断面図である図１６を参照して説明す
る。第８実施例では、送風量の大きい１台のファン（フ
ァン装置）５５により吹込口６５を介して空気を送風し
ている。このファン５５の取付位置であるファン中心Ｃ
1 は、軸方向に関し、軸中央位置Ｃ2 よりも反連結側に
ずれて位置している。したがって反連結側の風圧が連結
側の風圧よりも大きくなり、空気は反連結側から連結側
に向い軸方向に流れる。もちろん、径方向に向っても空
気は流れる。かくして、効果的な冷却ができる。Next, an eighth embodiment of the present invention will be described with reference to FIG. 15 which is a transverse sectional view and FIG. 16 which is a longitudinal sectional view. In the eighth embodiment, one fan (fan device) 55 having a large air flow blows air through the blow-in port 65. The fan center C where the fan 55 is attached
1 is displaced from the axial center position C 2 in the axial direction on the side opposite to the connecting side. Therefore, the wind pressure on the anti-connection side becomes larger than the air pressure on the connection side, and air flows in the axial direction from the anti-connection side to the connection side. Of course, air flows even in the radial direction. Thus, effective cooling is possible.
【００３７】なお上記各実施例では、反連結側の風圧が
連結側の風圧よりも大きくなるようにファン装置を備え
たが、連結側の風圧が反連結側の風圧よりも大きくなる
ようにファン装置を備えるようにしてもよい。In each of the above embodiments, the fan device is provided so that the wind pressure on the anti-coupling side is higher than the wind pressure on the coupling side. However, the fan device is arranged so that the wind pressure on the coupling side is higher than the wind pressure on the anti-coupling side. A device may be provided.
【００３８】[0038]
【発明の効果】以上実施例と共に具体的に説明したよう
に本発明によれば、電動機内部の一方の側の風圧が他方
の側の風圧よりも大きくなるようにファン装置を備えた
ため、送風した空気は径方向に流れるのみならず、軸方
向にも流れて効果的な冷却が実行できる。As described above in detail with reference to the embodiments, according to the present invention, since the fan device is provided so that the wind pressure on one side inside the electric motor becomes larger than the wind pressure on the other side, air is blown. The air not only flows in the radial direction, but also flows in the axial direction so that effective cooling can be performed.
【００３９】更に固定子や回転子に、軸方向に伸びる通
風孔を形成することにより、より良好な冷却を実行する
ことができる。Further, by forming ventilation holes extending in the axial direction in the stator and the rotor, it is possible to perform better cooling.
【図１】本発明の第１実施例を示す横断面図。FIG. 1 is a cross-sectional view showing a first embodiment of the present invention.
【図２】本発明の第１実施例を示す縦断面図。FIG. 2 is a longitudinal sectional view showing the first embodiment of the present invention.
【図３】本発明の第２実施例を示す横断面図。FIG. 3 is a cross sectional view showing a second embodiment of the present invention.
【図４】本発明の第２実施例を示す縦断面図。FIG. 4 is a longitudinal sectional view showing a second embodiment of the present invention.
【図５】本発明の第３実施例を示す横断面図。FIG. 5 is a cross sectional view showing a third embodiment of the present invention.
【図６】本発明の第３実施例を示す縦断面図。FIG. 6 is a longitudinal sectional view showing a third embodiment of the present invention.
【図７】本発明の第４実施例を示す横断面図。FIG. 7 is a cross sectional view showing a fourth embodiment of the present invention.
【図８】本発明の第４実施例を示す縦断面図。FIG. 8 is a longitudinal sectional view showing a fourth embodiment of the present invention.
【図９】本発明の第５実施例を示す横断面図。FIG. 9 is a cross sectional view showing a fifth embodiment of the present invention.
【図１０】本発明の第５実施例を示す縦断面図。FIG. 10 is a longitudinal sectional view showing a fifth embodiment of the present invention.
【図１１】本発明の第６実施例を示す横断面図。FIG. 11 is a cross sectional view showing a sixth embodiment of the present invention.
【図１２】本発明の第６実施例を示す縦断面図。FIG. 12 is a vertical sectional view showing a sixth embodiment of the present invention.
【図１３】本発明の第７実施例を示す横断面図。FIG. 13 is a cross sectional view showing a seventh embodiment of the present invention.
【図１４】本発明の第７実施例を示す縦断面図。FIG. 14 is a vertical sectional view showing a seventh embodiment of the present invention.
【図１５】本発明の第８実施例を示す横断面図。FIG. 15 is a cross sectional view showing an eighth embodiment of the present invention.
【図１６】本発明の第８実施例を示す縦断面図。FIG. 16 is a vertical sectional view showing an eighth embodiment of the present invention.
【図１７】先に出願した強制冷却形電動機を示す縦断面
図である。FIG. 17 is a vertical sectional view showing a forced cooling type electric motor filed previously.
【図１８】先に出願した強制冷却形電動機を示す横断面
図である。FIG. 18 is a cross-sectional view showing a forced cooling type electric motor filed previously.
【図１９】従来の強制通風冷却形電動機を示す縦断面
図。FIG. 19 is a vertical sectional view showing a conventional forced draft cooling type electric motor.
【図２０】従来の強制通風冷却形電動機を示す横断面
図。FIG. 20 is a cross-sectional view showing a conventional forced draft cooling type electric motor.
１０ 電動機 １１，１２ ブラケット １３ フレーム １４ 回転軸 １５，１６ 軸受 １７ ロータ鉄心 １８ ステータ鉄心 １９ａ，１９ｂ コイル ２０ 吹込口 ２１ 排気口 ３０ ブロワー ３１ 吸込口 ５０，５１，５２，５３，５４，５５ ファン ６０，６１，６２，６３，６４，６５ 吹込口 ７０ 排気口 ８０，８１，８２ 通風孔 ９０，９１ 通風孔 10 electric motor 11,12 bracket 13 frame 14 rotating shaft 15,16 bearing 17 rotor core 18 stator iron core 19a, 19b coil 20 blow inlet 21 exhaust outlet 30 blower 31 suction inlet 50, 51, 52, 53, 54, 55 fan 60, 61, 62, 63, 64, 65 Blow-in port 70 Exhaust port 80, 81, 82 Vent hole 90, 91 Vent hole
Claims (4)
内部に送り込む第１のファン装置と第２のファン装置を
備え、しかも第１のファン装置は軸方向に関し電動機内
部の一方の側の部分に送風する位置に配されると共に送
風量が第２のファン装置の送風量よりも多く、第２のフ
ァン装置は軸方向に関し電動機内部の他方の側の部分に
送風する位置に配されていることを特徴とする強制通風
冷却形電動機。1. A frame of an electric motor is provided with a first fan device and a second fan device for feeding external air into the electric motor, and the first fan device is provided on a portion on one side inside the electric motor in the axial direction. It is arranged at a position for blowing air, and the amount of blowing is larger than that of the second fan device, and the second fan device is arranged at a position for blowing air to the other side portion inside the electric motor in the axial direction. A forced draft cooling type electric motor.
内部に送り込む第１のファン装置と第２のファン装置を
備え、しかも第１のファン装置は軸方向に関し電動機内
部の一方の側の部分に送風する位置に配されると共に送
風量が第２のファン装置の送風量よりも多く、第２のフ
ァン装置は軸方向に関し電動機内部の他方の側の部分に
送風する位置に配されており、 更に電動機の固定子には軸方向に伸びる複数本の通風孔
が形成されていることを特徴とする強制通風冷却形電動
機。2. A frame of an electric motor is provided with a first fan device and a second fan device for feeding external air into the electric motor, and the first fan device is provided at a portion on one side inside the electric motor in the axial direction. The second fan device is arranged at a position where the air is blown and the amount of the air blow is larger than that of the second fan device, and the second fan device is arranged at a position where the second fan device blows to a portion on the other side inside the electric motor in the axial direction. Further, the forced draft cooling type electric motor is characterized in that the stator of the electric motor is formed with a plurality of ventilation holes extending in the axial direction.
内部に送り込む第１のファン装置と第２のファン装置を
備え、しかも第１のファン装置は軸方向に関し電動機内
部の一方の側の部分に送風する位置に配されると共に送
風量が第２のファン装置の送風量よりも多く、第２のフ
ァン装置は軸方向に関し電動機内部の他方の側の部分に
送風する位置に配されており、 更に電動機の回転子には軸方向に伸びる複数本の通風孔
が形成されていることを特徴とする強制通風冷却形電動
機。3. A frame of the electric motor is provided with a first fan device and a second fan device for feeding external air into the electric motor, and the first fan device is provided on a portion on one side inside the electric motor in the axial direction. The second fan device is arranged at a position where the air is blown and the amount of the air blow is larger than that of the second fan device, and the second fan device is arranged at a position where the second fan device blows to a portion on the other side inside the electric motor in the axial direction. Further, the forced draft cooling type electric motor is characterized in that the rotor of the electric motor is formed with a plurality of ventilation holes extending in the axial direction.
内部に送り込むファン装置を備え、しかも前記ファン装
置は軸方向に関し中央位置からずれた位置に配されてい
ることを特徴とする強制通風冷却形電動機。4. A forced draft cooling type wherein a frame of the electric motor is provided with a fan device for sending external air into the electric motor, and the fan device is arranged at a position displaced from a central position in the axial direction. Electric motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21148595A JPH0956118A (en) | 1995-08-21 | 1995-08-21 | Forced-air cooling motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21148595A JPH0956118A (en) | 1995-08-21 | 1995-08-21 | Forced-air cooling motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0956118A true JPH0956118A (en) | 1997-02-25 |
Family
ID=16606741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21148595A Withdrawn JPH0956118A (en) | 1995-08-21 | 1995-08-21 | Forced-air cooling motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0956118A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195430A (en) * | 2010-03-16 | 2011-09-21 | 株式会社安川电机 | Rotating electrical machine |
| JP2011193695A (en) * | 2010-03-16 | 2011-09-29 | Yaskawa Electric Corp | Rotating electric machine |
| US20140368066A1 (en) * | 2013-06-17 | 2014-12-18 | Honeywell International, Inc., Patent Services M/S Ab/2B | Air cooling of a motor using radially mounted fan |
| JP2015220854A (en) * | 2014-05-16 | 2015-12-07 | 株式会社アマダホールディングス | Cooling device for driving motor for press machine |
| CN108604849A (en) * | 2016-02-02 | 2018-09-28 | 西门子股份公司 | Generator cooling means |
| CN112701816A (en) * | 2021-01-27 | 2021-04-23 | 宁波市众山小电器科技有限公司 | Kitchen garbage processor |
| WO2022230297A1 (en) * | 2021-04-30 | 2022-11-03 | 株式会社明電舎 | Rotating machine |
-
1995
- 1995-08-21 JP JP21148595A patent/JPH0956118A/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195430A (en) * | 2010-03-16 | 2011-09-21 | 株式会社安川电机 | Rotating electrical machine |
| JP2011193695A (en) * | 2010-03-16 | 2011-09-29 | Yaskawa Electric Corp | Rotating electric machine |
| US8415864B2 (en) | 2010-03-16 | 2013-04-09 | Kabushiki Kaisha Yaskawa Denki | Rotating electrical machine |
| US20140368066A1 (en) * | 2013-06-17 | 2014-12-18 | Honeywell International, Inc., Patent Services M/S Ab/2B | Air cooling of a motor using radially mounted fan |
| EP2860854A3 (en) * | 2013-06-17 | 2016-03-09 | Honeywell International Inc. | Air cooling of a motor using radially mounted fan |
| US9331550B2 (en) * | 2013-06-17 | 2016-05-03 | Honeywell International Inc. | Air cooling of a motor using radially mounted fan |
| JP2015220854A (en) * | 2014-05-16 | 2015-12-07 | 株式会社アマダホールディングス | Cooling device for driving motor for press machine |
| CN108604849A (en) * | 2016-02-02 | 2018-09-28 | 西门子股份公司 | Generator cooling means |
| US11005340B2 (en) | 2016-02-02 | 2021-05-11 | Siemens Gamesa Renewable Energy A/S | Electric generator cooling method |
| CN112701816A (en) * | 2021-01-27 | 2021-04-23 | 宁波市众山小电器科技有限公司 | Kitchen garbage processor |
| WO2022230297A1 (en) * | 2021-04-30 | 2022-11-03 | 株式会社明電舎 | Rotating machine |
| JP2022170985A (en) * | 2021-04-30 | 2022-11-11 | 株式会社明電舎 | Rotary machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20021105 |