Blocking device for the recirculation loop in a fuel cell stack
AssigneeSchaeffler Technologies AG & Co. KG
InventorsJan Pfannenmueller, Markus Popp
Life of this patent
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Abstract
A blocking device for the recirculation loop in a fuel cell stack comprises a hydrogen inlet, a recirculation gas inlet, and a purge line. In order to dispense with the need for some valves, a recirculation loop blocking valve is provided which is switched by an upstream hydrogen switching valve, and a purge valve is integrated which is also configured as a pressure relief valve.
Claims20
A blocking device for a recirculation loop in a fuel cell stack comprising a hydrogen inlet, a recirculation gas inlet and a purge line, wherein a recirculation loop blocking valve is provided, which is switched by an upstream hydrogen switching valve, and a purge valve is integrated into the recirculation loop and is also configured as a pressure relief valve.
A blocking device for a recirculation loop in a fuel cell stack comprising:
- an inlet;
- a recirculation line in communication with the inlet;
- a purge line in communication with the recirculation line;
- a recirculation loop blocking valve arranged in the recirculation line and downstream of the purge line;
- a switching valve arranged between the inlet and the recirculation loop blocking valve, the switching valve being configured to selectively permit communication from the inlet to the recirculation loop blocking valve;
- and
- a purge valve arranged in the purge line, the recirculation loop blocking valve being engageable with the purge valve.
Dependencies are inferred from the claim text.