Device for supplying air to fuel cells has claw compressor with at least two mutually engaged compressor wheels, claw expansion device with at least two mutually engaged expansion device wheels

摘要

The device has a compressor (5) connected before the fuel cell (1) and an expansion device (6) connected after the fuel cell. The compressor is in the form of a claw compressor with at least two mutually engaged compressor wheels (7,7') and the expansion device is in the form of a claw expansion device with at least two mutually engaged expansion device wheels (9,9').