MOTOR AND ELECTRICALLY-DRIVEN SUPERCHARGER WITH THE SAME

• Main Author: KAMIO YOSHIKI
• Format: Patent
• Language: English; Japanese
• Published: 01.06.2017
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

PROBLEM TO BE SOLVED: To provide a motor which supplies a fluid to a fluid bearing in a simple fluid supply structure and is capable of cooling a stator by utilizing the fluid.SOLUTION: A motor 1 comprises a housing 8, a stator 9 and a rotor 10. In the housing, first and second fluid bearings 11 and 12 which support a rotary shaft 10a of the rotor in a rotatable manner are provided. The housing includes a first holding part 23 and a second holding part 24 and in the housing, a first supply flow passage 31 of which one end side is opened outside of the housing and the other end side is connected to the first fluid bearing, a branch flow passage 32 which is branched from the first supply flow passage and of which one end side is opened at a holding surface side of the first holding part, and a second supply flow passage 44 of which one end side is opened at a holding surface side of the second holding part and the other end side is connected to the second fluid bearing are formed. Further, in the stator, a penetrating flow passage 50 which penetrates in an axial direction in such a manner that the one end side of the branch flow passage and the one end side of the second supply flow passage are connected is formed, and the penetrating flow passage cools the stator with a fluid flowing within the penetrating flow passage.SELECTED DRAWING: Figure 1 【課題】流体軸受に対して簡素な流体供給構造で流体を供給し、その流体を利用してステータを冷却できるモータを提供する。【解決手段】モータ１は、ハウジング８と、ステータ９と、ロータ１０と、を備え、ハウジングには、ロータの回転軸１０ａを回転可能に支持する第１及び第２流体軸受１１、１２が設けられる。ハウジングは、第１挟持部２３と第２挟持部２４と、を備え、一端側がハウジングの外側に開口して他端側が第１流体軸受に接続される第１供給流路３１と、第１供給流路から分岐して一端側が第１挟持部の挟持面側に開口する分岐流路３２と、一端側が第２挟持部の挟持面側に開口して他端側が第２流体軸受に接続される第２供給流路４４と、が形成される。さらに、ステータには、分岐流路の一端側と第２供給流路の一端側とを連絡するように軸方向に貫通した貫通流路５０が形成され、貫通流路は、その内部を流れる流体でステータを冷却する。【選択図】図１