PUMP AND FUEL CELL SYSTEM HAVING A PUMP

摘要

The invention relates to a pump (1) having a shaft (4) and an impeller (5) which is arranged on the shaft, and having a labyrinth seal (9A,9B) which is arranged between stationary and moving parts of the pump, with a plurality of blades (6) being arranged on the rotor (2) and with a labyrinth seal extending at least between the shaft and a blade rear (12) of the blades. The gap in the labyrinth seal is designed such that liquid water can be actively carried away, with the labyrinth seal for this purpose being designed at least in places with a channel (14, 17, 18) in the form of a spiral and/or a staircase. The invention also relates to a fuel cell system having a pump such as this.