Expander for a fuel cell system

Abstract

The present disclosure provides a fuel cell system including: a humidifier having one side connected to a stack to supply droplets toward the stack of the fuel cell system; a gas-liquid separator connected to the other side of the humidifier and configured to separate and discharge air and the droplets in the humidifier, the gas-liquid separator having one side connected to a water discharge port; and an expander connected to the other side of the gas-liquid separator and having a fan configured to rotate to allow the air and the droplets to flow, in which the expander is disposed at a position relatively higher than the gas-liquid separator, such that a rotation direction of the expander for a fuel cell system is specified to prevent produced water from remaining in a volute, thereby preventing corrosion of a product, and preventing the produced water from being introduced into the expander.

Dependencies are inferred from the claim text.