| 摘要 |
PURPOSE:To provide possibility of using the arrangement with higher pressure by locating the internal end of guide vanes innermore than the bore of impeller, wherein the guide vane is furnished between the impeller sub-plate and the casing, and by locating the external end outermore than the periphery. CONSTITUTION:Guide vanes 13 are furnished between the sub-plate 18 of an impeller 11 and the casing 12. The internal end 14 of these guide vanes 13 is located innermore than the bore of the impeller 11, while the external end 15 outermore than the periphery. The suction hole 16 of the casing 12 is formed smaller than the inside dia. of the impeller 11. The circulative air stream flowing in the casing flows along the guide vane 13 to be led to the central part, and flows into the impeller to provide effective flow. Thus higher pressurization is accomplished by itterative passages of part of the stream through the impeller.
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