Patent ID: 6706438
Filing Date: 2004-03-16
Classification: F04F,F25B,H01M,Y02E,Y10T

Abstract:
A fluid supply device for a fuel cell, comprising:a needle which has an end portion; a taper section which is arranged coaxially with, and is connected to or formed integrally with, said needle; a nozzle which has an aperture portion at its end, with said needle and said taper section being coaxially inserted into said aperture portion, and which emits a first fluid from said aperture portion when said first fluid is supplied to the interior of said nozzle; a diffuser which is provided coaxially with said needle, said taper section, and said nozzle, which sucks in a second flow of fluid by a negative pressure which is generated by the injection of said first flow of fluid, and which mixes said second fluid flow with said first fluid flow and supplies the mixture; a needle position adjustment device which shifts said needle along its axial direction; and a taper section position adjustment device, which is the same as or different from the needle position adjustment device, and which shifts said taper section along its axial direction; wherein said first fluid flow passes through a first fluid conduit which is constituted by a gap between said needle and said aperture portion of said nozzle, and, after mixing with said second fluid flow, flows through a second fluid conduit which is constituted by a gap between said taper section and said diffuser.