| 摘要 |
<p>An object of the present invention is to provide an accumulator including a flow damper which is capable of forming a strong vortex in a vortex chamber to thereby obtain a high flow resistance at the time of a small flow injection. To this end, the following are performed for the flow damper (24) of the accumulator (21) : an extension line (K) of an inner surface (27b), at the side of a large flow pipe, of a small flow pipe is drawn from a junction (33) (a third intersecting point (P3)) of the small flow pipe (27) and a large flow pipe(26); a straight line(L) is drawn from the junction(the third intersecting point (P3)) in a free-jet-spread proportion relative to the extension line; a first intersecting point (P1) of this straight line (L) and an inner surface (26d), at the opposite side of the small flow pipe, of the large flow pipe is obtained; a tangent is drawn from this first intersecting point (P1) to an inner peripheral surface(25a) of a vortex chamber(25) to obtain a second intersecting point(P2) of the tangent and the inner peripheral surface of the vortex chamber; a flat surface portion (25a-1) including a line linking the first intersecting point (P1) with the second intersecting point (P2) is used as an extended surface portion of the inner peripheral surface of the vortex chamber; and a junction of this extended surface portion and the inner surface, at the opposite side of the small flow pipe, of the large flow pipe is used as a junction(32) of the large flow pipe and the vortex chamber.</p> |
