PRESSURE ADJUSTING DEVICE OF ROTARY ELECTRIC MACHINE

• Main Author: TACHIKAWA JUNYA
• Format: Patent
• Language: English; Japanese
• Published: 30.11.2017
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

PROBLEM TO BE SOLVED: To maintain insulation performance of a rotary electric machine with a simple structure even in a highland or the like.SOLUTION: A pressure adjusting deice comprises: a rotary electric machine (12); a housing (10) that houses the rotary electric machine (12) in an airtight state; and a housing inner pressure adjusting part (30) that is provided in the housing (10) and adjusts an inner pressure by using a thrust generated by a difference of the inner and external pressures of the housing (10). The housing inner pressure adjusting part (30) discharges an air to an external part of the housing (10) from the inner part of the housing (10) when the inner pressure is higher than the external pressure by a first predetermined value or more and introduces the air to the inner part of the housing (10) from the external part of the housing (10) when the external pressure is higher than the inner pressure by a second predetermined value or more.SELECTED DRAWING: Figure 1 【課題】簡単な構成で、高地等においても回転電機の絶縁性能を維持できるようにする。【解決手段】回転電機（１２）と、回転電機（１２）を気密状態で収納する筐体（１０）と、筐体（１０）に設けられ、筐体（１０）の内圧と外圧との差によって生じる推力を用いて、内圧を調節する筐体内圧力調節部（３０）と、を設けた。筐体内圧力調節部（３０）は、内圧が外圧よりも第１の所定値以上高い場合に、筐体（１０）の内部から筐体（１０）の外部に空気を放出するとともに、外圧が内圧よりも第２の所定値以上高い場合に、筐体（１０）の外部から筐体（１０）の内部に空気を導入するものである。【選択図】図１