IMPELLER FOR FUEL PUMP AND FUEL PUMP USING THE SAME

PROBLEM TO BE SOLVED: To provide an impeller for a fuel pump enabling the smooth inflow of a fuel into vane grooves, and also to provide a fuel pump using the impeller. SOLUTION: This impeller 50 is formed in a disk shape. The outer periphery of the impeller 50 is covered by an annular part 52, and the vane grooves 56 are formed in both inner peripheral sides of the annular part 52 in the rotating axis direction. The vane grooves 56 adjacent to each other in the rotating direction are partitioned by partition walls 54 bent in the radial rear direction at a roughly center part in the axial direction. The vane grooves 56 formed on both sides in the rotating axis direction are partitioned by the partition walls 58 partly on the radial inside thereof. The front surface 60 at the front of the partition wall 54 in the rotating direction positioned at the rear of the vane grooves 56 in the rotating direction is formed aslant rearward in the rotating direction toward the radial outside thereof. COPYRIGHT: (C)2006,JPO&NCIPI