| CPC H01M 8/04097 (2013.01) [F02C 3/32 (2013.01); F04F 5/16 (2013.01); F04F 5/461 (2013.01); H01M 8/04753 (2013.01)] | 1 Claim |
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1. An ejector comprising:
an ejector body comprising:
a first inlet part into which a supply gas supplied from a hydrogen storage tank is introduced; and
a second inlet part into which a recirculation gas, which is discharged from a fuel cell stack and recirculates to the fuel cell stack, is introduced; and
an ejector nozzle provided in the ejector body and configured to eject the supply gas introduced into the first inlet part to circulate the recirculation gas,
wherein the ejector nozzle comprises:
a first tube having a first flow path into which the supply gas is introduced; and
a second tube provided outside the first tube and having an inner diameter larger than an inner diameter of the first tube, the second tube defining a second flow path between the first tube and the second tube,
wherein the first tube further comprises a communication port that penetrates the first tube to allow the first flow path to communicate with the second flow path and is openably and closably provided,
wherein an opening/closing member is provided in the first tube to open or close the communication port and provided to be rotatable in a direction toward the second tube about a portion connected to the first tube by a hinge,
wherein an elastic member is arranged between the first tube and the second tube and configured to provide elastic force that allows the opening/closing member to open or close the communication port by elastically deforming based on a flow rate of the fluid introduced into the first flow path,
wherein when the communication port is opened, a part of the supply gas flowing in the first flow path is allowed to flow along the second flow path, and
wherein one end of the elastic member is fixed to an inner surface of the second tube, and an opposite end of the elastic member is fixed to the opening/closing member in the first tube.
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