ELECTRICALLY-DRIVEN COMPRESSOR

• Main Authors: SUZUKI MAREYUKI, NAKANE YOSHIYUKI
• Format: Patent
• Language: English; Japanese
• Published: 06.08.2020
• Subjects: BLASTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

To downsize a body of a rotating shaft in an axial direction and to efficiently cool coils and bearings.SOLUTION: A centrifugal compressor comprises resin members 40 which are arranged between coils 34 and flanges 36f inside slots 37, extend in an axial direction of a rotating shaft and has wall parts 41 leaving gaps between the coils 34 and the flanges 36f. Portions of the coils 34 positioned inside the slots 37 are stably supported in a state where they are detached from the flanges 36f by the wall parts 41. The resin members 40 have communication paths 46 which are surrounded by the wall parts 41 and extend in the axial direction. The communication paths 46 open at ends of the rotating shafts in the axial direction and communicate spaces of one side and the other side across stator cores 33 inside a housing.SELECTED DRAWING: Figure 3 【課題】回転軸の軸線方向の体格を小型化し、且つコイル及び軸受を効率良く冷却すること。【解決手段】遠心圧縮機は、スロット３７の内部におけるコイル３４と鍔部３６ｆとの間に配置されて回転軸の軸線方向に延在し、コイル３４と鍔部３６ｆとの間隔を空ける壁部４１を有する樹脂部材４０を備えている。この壁部４１によって、スロット３７の内部に位置するコイル３４の部分が、鍔部３６ｆから離間させた状態で安定的に支持される。また、樹脂部材４０は、壁部４１によって囲まれて軸線方向に延在する連通路４６を有している。連通路４６は、回転軸の軸線方向の端部で開口し、ハウジングの内部におけるステータコア３３を挟んだ一方側と他方側との空間を連通する。【選択図】図３