ROTARY ELECTRIC MACHINE AND ELEVATOR HOIST SYSTEM

• Main Authors: ENDO MASAAKI, IIZUKA MOTONOBU, KOORI DAISUKE, HARA TAKEKI
• Format: Patent
• Language: English; Japanese
• Published: 09.05.2019
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

To provide a rotary electric machine with cooling efficiency improved by enhancement in efficiency of axial flow of a refrigerant therethrough, and an elevator hoist system including the rotary electric machine.SOLUTION: The rotary electric machine includes a rotor 2 including a rotary shaft 8, a stator 3 including a coil end 14, a fan 7 including a rotary shaft 13 and a blade 26, and end brackets 5 disposed at both ends in the axial direction. The rotary shaft 13 of the fan 7 is substantially parallel with the axial direction. The end brackets 5 include openings 27, 17. The fan 7 is provided in the opening 27 of one of the end brackets 5. L1>L2>L3 is satisfied where: L1 is a distance obtained by adding the radial length r of the blade 26 of the fan 7 to a radial distance from the rotary shaft 8 of the rotor 2 to the rotary shaft 13 of the fan 7; L2 is a radial distance from the rotary shaft 8 of the rotor 2 to the radial outer end of the coil end 14; and L3 is a distance obtained by subtracting the radial length r of the blade 26 of the fan 7 from the radial distance from the rotary shaft 8 of the rotor 2 to the rotary shaft 13 of the fan 7.SELECTED DRAWING: Figure 2 【課題】冷媒を軸方向に効率良く流すことができて冷却効率が向上した回転電機、及びこの回転電機を備えたエレベーター用巻上げ機システムを提供する。【解決手段】回転軸８を備える回転子２と、コイルエンド１４を備える固定子３と、回転軸１３と羽根２６を備えるファン７と、軸方向の両端部にエンドブラケット５を備える。ファン７の回転軸１３は軸方向に略平行である。エンドブラケット５は開口部２７、１７を備える。ファン７は一方のエンドブラケット５の開口部２７に設けられる。回転子２の回転軸８からファン７の回転軸１３までの径方向距離に、ファン７の羽根２６の径方向長さｒを加えた距離をＬ１とし、回転子２の回転軸８からコイルエンド１４の径方向外端部までの径方向距離をＬ２とし、回転子２の回転軸８からファン７の回転軸１３までの径方向距離から、ファン７の羽根２６の径方向長さｒを引いた距離をＬ３とすると、Ｌ１＞Ｌ２＞Ｌ３である。【選択図】図２