GAS-LIQUID SEPARATOR OF FUEL CELL SYSTEM

摘要

A gas-liquid separator capable of decreasing the height dimension thereof and a fuel cell system suitable for the gas-liquid separator are provided. In a gas-liquid separator, an introduction pipe connected to a main pipe includes an enlarged portion. A passage cross-sectional area of the enlarged portion is larger than that of an inlet pipe. An exhaust gas of hydrogen including impurities such as water discharged from a fuel cell stack flows from the inlet pipe and the speed of the exhaust gas in the enlarged portion decreases. As the speed at which the exhaust gas flows into the main pipe decreases, a ratio in which water falls downward increases. For this reason, even when the dimension of the gas-liquid separator in the height direction is shortened, a water separating rate can be maintained. The exhaust gas of hydrogen from which water is separated is reused in the fuel cell stack.

主权项

1. A gas-liquid separator used in an anode gas line of a fuel cell system, comprising:
a main pipe which extends in the up and down direction; an introduction pipe which is connected to a side surface of the main pipe so as to intersect the side surface; an inlet pipe which is connected to the introduction pipe; an upper outlet pipe which is connected to the upper side of the main pipe; and a lower outlet pipe which is connected to the lower side of the main pipe, wherein the introduction pipe includes an enlarged portion having a passage cross-sectional area larger than a passage cross-sectional area of the inlet pipe.