614 磁気浮上式遠心血液ポンプのポンプ内流れとインペラーの回転安定性(GS-5 流体機械(1))

概要

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Our Magnetically Suspended Centrifugal blood pump has 3 axes control system instead of 5 axes in order to reduce pump size and electric power consumption. Stiffness in the radial direction is not so high because the impeller is passively controlled by restoring magnetic forces. So we examined rotational stability for various kinds of profiles of impellervane and volute. We measured x-and y-position of impeller by Laser sensors and pressure distribution, in the double volute, by cannular-tip type micro pressure sensor. It proves that the impeller is most stable for the little widened flow passage from impeller outlet to volute inlet and that the pressure is a little higher is in the outer volute than that of the inner volute for high flow rate.
一般社団法人日本機械学会の論文
2000-03-16