GAS-LIQUID SEPARATOR

To provide a gas-liquid separator where water can be excellently discharged even when used in a low temperature environment and water storage in the vicinity of a solenoid on-off valve after stopping the power generation of a fuel cell is prevented.SOLUTION: A gas-liquid separator includes: a gas-liquid separation part separating water from a water-containing gas at the upper part of a housing H; an annular first water storage portion 5 receiving water from the gas-liquid separation part at the lower part of the housing H and storing; a second water storage portion 6 disposed at a lower side from the first water storage portion 5; a valve mechanism opening and closing a drain flow passage 26 communicated with the bottom of the second water storage portion 6; a cylindrical wall 24 being disposed at the inner peripheral side of the first water storage portion 5 and guiding overflown water to the second water storage portion 6; a cylindrical vertical wall part 31 separated from the cylindrical wall 24 and externally fitted; and a partition member 30 integrally formed with a lid-like part 32 closing the upper edge of the vertical wall part 31.SELECTED DRAWING: Figure 6 【課題】低温環境で使用する場合でも水を良好に排出できると共に、燃料電池の発電停止後の電磁開閉弁近傍への水の貯留を防止する気液分離器を構成する。【解決手段】ハウジングＨの上部で含水ガスから水を分離する気液分離部と、ハウジングＨの下部で気液分離部からの水を受け止めて貯留する環状の第１貯水部５と、第１貯水部５より下側に配置される第２貯水部６と、第２貯水部６の底部に連通する排水流路２６を開閉する弁機構とを備えている。第１貯水部５の内周側に配置されオーバーフローした水を第２貯水部６に案内する筒状壁２４と、筒状壁２４から離間して外嵌された筒状の縦壁部３１、及び、縦壁部３１の上端を塞ぐ蓋状部３２を一体的に形成した仕切部材３０とを備えた。【選択図】図６