Patent ID: 8546026

Claim:
A gas-liquid separator comprising: a main plate having a main surface and a side surface extending along an outside edge of the main plate; an inflow path, into which a fluid material flows, the fluid material having a liquid and a gas; a spiral path formed in the main surface of the main plate, connected to the inflow path to receive the fluid material and formed spirally such that the fluid material is separated into the liquid and the gas by a difference in centrifugal forces, an outer side of the spiral path having stronger affinity for the liquid than an inner side of the spiral path and the outer side of the spiral path being hydrophilic and the inner side of the spiral path being hydrophobic; and an outflow path, connected to the spiral path and discharging the liquid and the gas, which have been separated in the spiral path, wherein the spiral path has an increasing radius of curvature from one end to an other end, and is placed on a same virtual plane, the inflow path is connected to the one end of the spiral path and the outflow path is connected to the other end of the spiral path, the outflow path passes through the side surface of the main plate, and the outflow path comprises: a liquid discharge path connected to the outer side of the spiral path so as to discharge the liquid; and a gas discharge path connected to the inner side of the spiral path so as to discharge the gas.