Exhaust air guide of a fuel cell stack in a motor vehicle
First Claim
1. An exhaust-air guide of a fuel cell stack, comprising:
- a cooler structure of the fuel cell stack, wherein ambient air flows through the cooler structure; and
a guide for conducting exhaust air of the fuel cell stack to a point upstream of the cooler structure viewed in a flow-through direction of the ambient air through the cooler structure, the guide being configured such that the exhaust air of the fuel cell stack flows through the cooler structure in the flow-through direction, whereinan outlet of the guide is arranged in such a way to draw the ambient air into the cooler structure via a pressure potential between the exhaust air of the fuel cell stack and the ambient air in accordance with a jet pump principle.
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Accused Products
Abstract
An exhaust-air guide of a fuel cell stack having a cooling structure, in particular in a motor vehicle, is provided. The cooler structure belongs to the functional environment of the fuel cell stack and is in form through which ambient air flows. The exhaust air of the fuel cell stack is guided to a point upstream of the cooler structure such that the exhaust air flows through the cooler structure in a throughflow direction and, in so doing, entrains ambient air in accordance with the jet pump principle. The exhaust air of the fuel cell stack may be cooled before being guided to the cooler structure. The exhaust air of the fuel cell stack is guided to a point upstream of the cooler structure in multiple pipes that are oriented at least approximately parallel to the inflow surface of the cooler structure, from which pipes the exhaust air emerges via outlet openings in the pipe wall. The outlet openings are situated at a suitable angle with respect to the throughflow direction.
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Citations
7 Claims
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1. An exhaust-air guide of a fuel cell stack, comprising:
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a cooler structure of the fuel cell stack, wherein ambient air flows through the cooler structure; and a guide for conducting exhaust air of the fuel cell stack to a point upstream of the cooler structure viewed in a flow-through direction of the ambient air through the cooler structure, the guide being configured such that the exhaust air of the fuel cell stack flows through the cooler structure in the flow-through direction, wherein an outlet of the guide is arranged in such a way to draw the ambient air into the cooler structure via a pressure potential between the exhaust air of the fuel cell stack and the ambient air in accordance with a jet pump principle. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification