PURPOSE: To increase the compression ratio and improve the compression efficiency by installing an annular guide member in a main flow passage and connecting the inner peripheral side surface and the outer peripheral side surface of the guide member by a corner part and reducing the sectional area of the guide member on a discharge port side.
CONSTITUTION: Since an annular guide member 4 is installed in a main flow passage 24, fluid smoothly flows in swirl form. Since the inner peripheral side surface 4a and the outer peripheral side surface 4b of the guide member 4 are connected by a corner part 4c having a prescribed radius of curvature, generation of turbulent flow of fluid on the peripheral surface of the guide member 4 is prevented, and a smooth flow is generated. Further, since the sectional area of the guide member 4 is reduced on a discharge port 62 side, the sectional area of the main flow passage 24 is increased as the fluid is compressed, and the smooth flow of fluid is obtained. Therefore, the compression ratio can be increased, and the compression efficiency can be improved.
| JPS5827870 | FUEL CONVEYING APPARATUS HAVING PUMP ROTOR ROTATED IN PUMP CHAMBER |
| JP2015094281 | VORTEX PUMP |
YAMAMOTO MASAFUMI
IWATA TORU
