| 摘要 |
PURPOSE:To obtain an efficient small pump, which has less flow loss and whose dynamic pressure at the entrance of a leak passage is small, by utilizing a regenerative pump as a fuel supply pump, placing it in a fuel tank, and by sucking the fuel from the bottom and press-sending it upward. CONSTITUTION:A regenerating pump is used as a fuel supply pump. A straight line part, which is extended along the tangential line and has a sufficient length as well as sectional flow area, is provided, at a discharge port, while the tip portion of a leakage preventing wall at its delivery side is made to form an acute angle. With these contrivances, we can obtain a pump with less flow loss, relatively small outside diameter, small less of fluid especially at a bent part, and loss of fuel due to leakage. Since a leak passage is placed with a considerably large angle against the flow direction of the fluid, the dynamic pressure at the entrance of the leak passage can be reduced. |
