Patent ID: 7920667

Claim:
An accumulator provided with a flow damper inside, the flow damper including a cylindrical vortex chamber, a small flow pipe connected to a peripheral portion of the vortex chamber along a tangential direction thereto, a large flow pipe connected to the peripheral portion while forming a predetermined angle with this small flow pipe, and an outlet pipe connected to an outlet formed at a central part of the vortex chamber, wherein the flow damper comprises a colliding jet controller for controlling a colliding jet composed of a jet from the large flow pipe and a jet from the small flow pipe flowing into the vortex chamber at the time of a large flow injection so that the colliding jet may proceed directly to the outlet without forming a vortex in the vortex chamber, and the colliding jet controller is a projection formed at the junction of the small flow pipe and the vortex chamber, wherein said junction of the small flow pipe and the vortex chamber is formed at a point where an inner surface of the small flow pipe is connected to an inner peripheral surface of the vortex chamber, said inner surface of the small flow pipe being at a side opposite to the large flow pipe.