COOLING STRUCTURE OF MOTOR

To improve cooling performance.SOLUTION: A motor comprises a generally cylindrical casing, a generally cylindrical side plate annually provided to a side end of the casing, a stater contained in the casing, a rotor freely rotatably supported about an axis passing a center of the stater in a hollow p...

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Bibliographische Detailangaben
Hauptverfasser: KOTANI SHINSUKE, YAGYU SUMIO
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To improve cooling performance.SOLUTION: A motor comprises a generally cylindrical casing, a generally cylindrical side plate annually provided to a side end of the casing, a stater contained in the casing, a rotor freely rotatably supported about an axis passing a center of the stater in a hollow part of the stater, and a generally cylindrical bulkhead extending from an inner surface of the side plate in an extending direction of the axis, facing the inside of the casing at a gap through which a coolant can pass. The casing has a coolant introduction port that pierces from an outer peripheral surface to an inner peripheral surface of the casing, and guides the coolant supplied from outside into the gap. The stater comprises a generally cylindrical stater core having a plurality of teeth protrusively provided on an inner peripheral part of the stater, and coils wound around the teeth in the bulkhead. The bulkhead includes a plurality of nozzle ports penetrated from an out peripheral surface to an inner peripheral surface of the bulkhead, and arranged over the whole circumference thereof in a circumferential direction. The nozzle ports injects the coolant passing through the gap into the inside of the bulkhead.SELECTED DRAWING: Figure 5 【課題】冷却性能の向上を図る。【解決手段】略円筒状のケーシングと、ケーシングの側端部に環設される略円環状の側面プレートと、ケーシング内に収容されるステータと、ステータの中空部においてステータの中心を通る軸線回りに回転自在に保持されるロータと、側面プレートの内側面から軸線の延長方向に延在し、ケーシングの内側に冷媒の流通可能な間隙を隔てて対向配置される略円筒状のバルクヘッドとを備え、ケーシングは、外周面から内周面に亘って貫設され、外部から供給される冷媒を間隙に導く冷媒導入口を有し、ステータは、内周部に複数のティースが突設される略円環状のステータコアと、バルクヘッドの内側において各ティースに巻回されるコイルとを有し、バルクヘッドは、外周面から内周面に亘って貫設され、且つ全周に亘って周方向に複数並設され、間隙を流通する冷媒をバルクヘッドの内側に噴出させるノズル孔部を有している。【選択図】図5