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 cartridge having a plurality of hollow fiber membranes coupled thereto;
• and a mid-case having the cartridge, in plural, coupled thereto,
• the mid-case comprises:
• a plurality of receiving holes configured respectively to receive the cartridges;
• and a plurality of blocking members protruding toward the receiving holes, the blocking members being configured respectively to contact the cartridges in order to block passage of wet gas, and
• each of the cartridges comprises:
• an inner case configured to receive the hollow fiber membranes;
• and an interlocking member configured to connect the inner case to the blocking member such that the blocking member and the inner case are moved in an interlocked state depending on pressure of wet gas located in the receiving hole.

A cartridge of a humidifier for fuel cells, the cartridge comprising:

• an inner case configured to be inserted into a mid-case of a humidifier for fuel cells configured to humidify dry gas supplied from outside using wet gas discharged from a fuel cell stack;
• a plurality of hollow fiber membranes received in the inner case;
• a first potting portion coupled to the inner case, the first potting portion being configured to fix one side of each of the hollow fiber membranes;
• a second potting portion coupled to the inner case, the second potting portion being configured to fix the other side of each of the hollow fiber membranes;
• and
• an interlocking member configured to connect the inner case to the mid-case such that the mid-case and the inner case are moved in an interlocked state depending on pressure of wet gas located in the mid-case.