Fuel cell membrane humidifier capable of controlling flow direction of fluid

A membrane humidifier for a fuel cell, the membrane humidifier comprising:

• a hollow fiber membrane module comprising hollow fiber membranes configured to allow moisture exchange between a first fluid flowing inside the hollow fiber membranes and a second fluid flowing outside the hollow fiber membranes;
• a housing unit defining an external appearance of the membrane humidifier,
• wherein
• a fluid guide unit configured to uniformly guide a flow of the second fluid is formed between the hollow fiber membranes and the housing unit,
• the fluid guide unit comprises a base unit configured to wrap the hollow fiber membranes and a protrusion unit formed on the base unit, the protrusion unit protruding so as to have a predetermined size,
• the protrusion unit comprises a plurality of stripes, and
• the plurality of stripes are formed to have an interval therebetween equivalent to 50 to 300% of a diameter of a single hollow fiber membrane.

A membrane humidifier for a fuel cell, the membrane humidifier comprising:

• a hollow fiber membrane module comprising hollow fiber membranes configured to allow moisture exchange between a first fluid flowing inside the hollow fiber membranes and a second fluid flowing outside the hollow fiber membranes;
• a housing unit defining an external appearance of the membrane humidifier,
• wherein
• a fluid guide unit configured to uniformly guide a flow of the second fluid is formed between the hollow fiber membranes and the housing unit,
• the fluid guide unit comprises a base unit configured to wrap the hollow fiber membranes and a protrusion unit formed on the base unit, the protrusion unit protruding so as to have a predetermined size,
• the protrusion unit comprises a plurality of stripes, and
• an angle defined between each of the plurality of stripes and a central axis of the hollow fiber membrane module ranges from 30 to 90°.

A membrane humidifier for a fuel cell, the membrane humidifier comprising:

• a hollow fiber membrane module comprising hollow fiber membranes configured to allow moisture exchange between a first fluid flowing inside the hollow fiber membranes and a second fluid flowing outside the hollow fiber membranes;
• a housing unit defining an external appearance of the membrane humidifier,
• wherein:
• a fluid guide unit configured to uniformly guide a flow of the second fluid is formed between the hollow fiber membranes and the housing unit;
• the fluid guide unit comprises a base unit configured to wrap the hollow fiber membranes and a protrusion unit formed on the base unit, the protrusion unit protruding so as to have a predetermined size;
• the protrusion unit comprises a plurality of stripes;
• the plurality of stripes are formed to have a height equivalent to 50 to 300% of a diameter of a single hollow fiber membrane;
• the plurality of stripes are formed to have an interval therebetween equivalent to 50 to 300% of a diameter of a single hollow fiber membrane;
• and
• an angle defined between each of the plurality of stripes and a central axis of the hollow fiber membrane module ranges from 30 to 90°.