Patent ID: 8999593
Filing Date: 2015-04-07
Classification: F04F,H01M,Y02E

Abstract:
1. An ejector apparatus for a fuel cell comprising: an ejector main body including an inlet port to which a fuel gas is supplied, an outlet port which communicates with the fuel cell, a suction port connected to a circulation-passage and from which a fuel offgas exhausted from the fuel cell and returned to the suction port is sucked, and an oxidizer-gas supply port to which an oxidizer gas is supplied; a first chamber provided in the ejector main body which communicates with the inlet port, the fuel gas being supplied into the first chamber; a second chamber which is provided in the ejector main body and communicates with the suction port, the fuel offgas being supplied into the second chamber; a third chamber which is provided in the ejector main body and communicates with the oxidizer-gas supply port, the oxidizer gas being supplied into the third chamber; a nozzle including a nozzle hole, the nozzle hole discharging the fuel gas supplied to the nozzle through the inlet port; a diffuser which mixes the fuel gas discharged from the nozzle hole, and the fuel offgas exhausted from the fuel cell and returned to the suction port through the circulation passage; a needle which is fixed on a side of the ejector main body and extends along an axial direction of the nozzle in a hollow portion of the nozzle; and a first diaphragm and a second diaphragm, each having a pressure receiving area, S