Cartridge of fuel cell humidifier, and fuel cell humidifier

A humidifier for fuel cells, the humidifier comprising:

• a humidifying module configured to humidify dry gas supplied from outside using wet gas discharged from a fuel cell stack;
• a first cap coupled to one end of the humidifying module;
• and
• a second cap coupled to the other end of the humidifying module, wherein
• the humidifying module comprises:
• a mid-case open at opposite ends thereof;
• and
• at least one cartridge disposed in the mid-case, the cartridge comprising a plurality of hollow fiber membranes,
• the cartridge comprises:
• an inner case having openings formed in ends thereof, the inner case being configured to receive the hollow fiber membranes;
• and
• a first fixing layer and a second fixing layer configured to fix opposite ends of the hollow fiber membranes, and
• the inner case comprises:
• a first divided case and a second divided case configured to receive the hollow fiber membranes;
• and
• a first press-fit member configured to couple the first divided case and the second divided case to each other by press-fit,
• wherein the first fixing layer and the second fixing layer are spaced apart from each other in a first axis direction,
• the inner case comprises a second press-fit member spaced apart from the first press-fit member in the first axis direction, and
• the first divided case and the second divided case are coupled to each other by press-fit using the first press-fit member and the second press-fit member,
• wherein the first press-fit member and the second press-fit member are formed so as to be different from each other in terms of at least one of shape and size.