Membrane humidifier for fuel cells

A membrane humidifier (100) for a fuel cell, the membrane humidifier (100) comprising:

• a first housing (10) comprising a humidity inlet port (12) configured to suction a wet flow thereinto and a dry air outlet port (14) configured to discharge dry air;
• a second housing (80) correspondingly coupled to the first housing the first housing, and comprising a humidity outlet port configured to discharge a wet flow and a dry air inlet port configured to suction dry air;
• and a cartridge (40) located inside the first housing (10) and the second housing (80),
• wherein inside the cartridge (40), a flow path through which the wet flow is suctioned or discharged is provided into any one selected among a first path through which the wet flow moves forward at an upper portion and moves downward and then is discharged toward a lower outlet, or a second path through which the wet flow moves forward at a lower portion and moves upward and then is discharged toward an upper outlet, thereby providing a structure in which turbulence generated between the first housing (10) or the second housing (80) and the cartridge (40) is reduced and vibrations or external force applied to a hollow fiber membrane is reduced,
• wherein the first housing (10) and the second housing (80) enclose a first cartridge gasket (20) in contact with the humidity inlet port (12) and the dry air outlet port (14), the cartridge (40) in contact with the first cartridge gasket (20) and configured to generate and filter the flow path, a first potting part (30) installed at a front portion of the cartridge (40), a second potting part (50) installed at a rear portion of the cartridge (40), and a second cartridge gasket (60) installed at the rear portion of the cartridge (40),
• a main gasket (70) is installed between the first housing (10) and the second housing (80), and
• the second housing (80) is fastened to the first housing (10), thereby achieving a single structure.