Patent ID: 7560186

Claim:
An exhaust gas disposal apparatus of a fuel cell, the apparatus comprising: a dilution vessel having a staying chamber configured for accommodating a hydrogen gas purged from said fuel cell; and exhaust piping for passing a cathode off-gas, wherein any of said dilution vessel and said exhaust piping comprises a hydrogen suction hole for sucking the hydrogen gas within said staying chamber, wherein a flow adjustment measure configured for flow-adjusting said hydrogen gas, and leading the hydrogen gas into said hydrogen suction hole is provided within said staying chamber, wherein said exhaust piping includes a divergence portion diverged into first piping and second piping, and wherein an ejector is arranged in said first piping, the ejector comprising: a nozzle configured to eject said cathode off-gas at a high speed by focusing flow of said cathode off-gas; a suction portion configured to generate a negative pressure by the cathode off-gas ejected from the nozzle, and to suck said hydrogen gas within said staying chamber: and a diffuser configured to mix said cathode off-gas with said hydrogen gas into a mixture gas at a location downstream of said suction portion and to exhaust the mixture gas, wherein at a location upstream of said ejector is arranged said divergence portion, and at a location downstream of the ejector is arranged a convergence portion where the mixture gas passing through the ejector and the cathode off-gas flowing in said second piping converge.