TURBOCHARGER
To easily form a cooling flow path while suppressing the generation of surging.SOLUTION: A flow path formation member 80 to form a return flow path 70 in cooperation with a compressor housing 40 is mounted on the compressor housing 40. The compressor housing 40 has an annular insertion recessed part...
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Main Authors | , , |
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Format | Patent |
Language | English Japanese |
Published |
01.08.2019
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Subjects | |
Online Access | Get full text |
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Summary: | To easily form a cooling flow path while suppressing the generation of surging.SOLUTION: A flow path formation member 80 to form a return flow path 70 in cooperation with a compressor housing 40 is mounted on the compressor housing 40. The compressor housing 40 has an annular insertion recessed part 40a into which a cylindrical insertion part 84 as part of the flow path formation member 80 is inserted. A cooling flow path 60 is formed by the insertion part 84 inserted into the insertion recessed part 40a. As in the cooling flow path 60 formed in the thickness of a wall part of the compressor housing 40, there is no need for manufacturing the compressor housing 40 using a complicated-structure casting mold using a core. Then, the return flow path 70 causes part of intake air taken into the compressor housing 40 to be returned to the upstream side in the flowing direction of the intake air further than a compressor impeller 13 in the compressor housing 40.SELECTED DRAWING: Figure 2
【課題】サージングの発生を抑制しつつも、冷却用流路を容易に形成すること。【解決手段】コンプレッサハウジング40と協働して還流流路70を形成する流路形成部材80がコンプレッサハウジング40に取り付けられている。コンプレッサハウジング40は、流路形成部材80の一部である筒状の挿入部84が挿入される環状の挿入凹部40aを有している。冷却用流路60は、挿入凹部40aに挿入部84が挿入されることにより形成されている。よって、冷却用流路60がコンプレッサハウジング40の壁部の厚み内に形成されている場合のように、コンプレッサハウジング40を、中子を用いた複雑な構造の鋳型を用いて製造する必要が無い。そして、還流流路70によって、コンプレッサハウジング40に吸入された吸気の一部がコンプレッサハウジング40内におけるコンプレッサインペラ13よりも吸気の流れ方向の上流側へ還流される。【選択図】図2 |
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Bibliography: | Application Number: JP20180008860 |