Fluid supply device having irregular vane grooves

Details Fluid supply device having irregular vane grooves Fluid supply device having irregular vane grooves

1998-08-03

1999-11-02

Ryznic, John

Rotary kinetic fluid motors or pumps

With sound or vibratory wave absorbing or preventing means...

415 551, F04D 500

Patent

active

059758430

ABSTRACT:
A fluid supply device such as a fuel pump has an impeller 24 on which vanes and vane grooves are arranged alternately on its outer circumference. All adjacent groove angles, each of which is defined by the adjacent two vane grooves, are different from each other. Among the arrangement of the vane grooves, a sum Sm of the angles of the vane grooves which are adjacent in succession in the number of m=n/k (k=2, 3 and 4) is determined. If the number n/k is not an integer, at least (n/k)+1 between n/k and (n/k)+1 is set as m. The sum Sm is determined n-times by shifting the vane groove, from which the sum is determined each time, in the circumferential direction one by one. The arrangement in which the sum Sm of each time satisfies the following relation is adopted: (360/k)-10.ltoreq.Sm.ltoreq.(360/k)+10.

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