Gasket assembly and fuel cell membrane humidifier comprising same

1 . A gasket assembly for a fuel cell membrane humidifier including a mid-case, a cap fastened to the mid-case, and at least one cartridge disposed inside the mid-case and accommodating a plurality of hollow fiber membranes, the gasket assembly comprising:

a sub-case formed in a shape surrounding an end of the cartridge and including a first hole into which the end of the cartridge is inserted; and

a gasket including a packing portion having a second hole into which the sub-case is inserted and being in close contact with an outer circumferential surface of the sub-case inserted into the second hole to absorb vibration in a horizontal direction of the cartridge, an edge portion formed to be connected to the packing portion and interposed in a space formed by a groove formed at an end portion of the mid-case and an end portion of the cap, and a damping portion formed on the outer circumferential surface of the sub-case to absorb vibration in a vertical direction of the cartridge with a movement in the vertical direction suppressed by the packing portion,

wherein the sub-case is formed of a material having a hardness higher than a material constituting a potting portion formed at the end of the cartridge.

2 . The gasket assembly of claim 1 ,

wherein the packing portion includes

a body member having a second hole into which the sub-case is inserted; and

a protrusion member formed at one end of the body member and in close contact with the outer circumferential surface of the sub-case inserted into the second hole.

3 . The gasket assembly of claim 2 , wherein the body member includes two or more second holes into which two or more sub-cases are able to be inserted, and two or more protrusion members are included and formed in contact with outer circumferential surfaces of the two or more sub-cases.

4 . The gasket assembly of claim 2 , wherein the protrusion member presses and comes into contact with the outer circumferential surface of the sub-case according to an elastic force to make a space on the mid-case side and a space on the cap side airtight.

5 . The gasket assembly of claim 1 , wherein the gasket further includes a damping cap portion formed over an upper surface of the packing portion, an upper surface of the sub-case, and an upper surface of the cartridge to absorb the vibration in the vertical direction of the cartridge.

6 . The gasket assembly of claim 1 ,

wherein the packing portion includes two or more second holes into which two or more sub-cases are able to be inserted, and

the damping portion is formed on an outer circumferential surface of each of the two or more sub-cases, to absorb a vibration in a vertical direction with a movement in the vertical direction suppressed by the packing portion.

7 . The gasket assembly of claim 1 , wherein an adhesive is applied to an inner circumferential surface of the sub-case such that the sub-case is coupled to the end of the cartridge.

8 . The gasket assembly of claim 1 ,

wherein the edge portion includes edge wings protruding in both directions, and

the edge wings are interposed with the groove formed at the end of the mid-case filled with the edge wings to seal the inside and outside of the mid-case, the mid-case, and the cap.

9 . The gasket assembly of claim 1 ,

wherein each of the packing portion and the edge portion has a first hardness of 20 to 70 Shore A, and

the gasket assembly further comprises a reinforcing member formed to be inserted into at least a portion of the packing portion and at least a portion of the edge portion, the reinforcing member having a second hardness higher than the first hardness.

10 . A fuel cell membrane humidifier comprising:

a mid-case;

a cap fastened to the mid-case;

at least one cartridge disposed inside the mid-case and accommodating a plurality of hollow fiber membranes; and

a gasket assembly airtightly coupled to at least one end of the humidification module through mechanical assembly so that the cap can be in fluid communication only with the hollow fiber membranes,

wherein the gasket assembly includes

a sub-case formed in a shape surrounding an end of the cartridge and including a first hole into which the end of the cartridge is inserted; and

a gasket including a packing portion having a second hole into which the sub-case is inserted and being in close contact with an outer circumferential surface of the sub-case inserted into the second hole to absorb vibration in a horizontal direction of the cartridge, an edge portion formed to be connected to the packing portion and interposed in a space formed by a groove formed at an end portion of the mid-case and an end portion of the cap, and a damping portion formed on the outer circumferential surface of the sub-case to absorb vibration in a vertical direction of the cartridge with a movement in the vertical direction suppressed by the packing portion,

wherein the sub-case is formed of a material having a hardness higher than a material constituting a potting portion formed at the end of the cartridge.

11 . The fuel cell membrane humidifier of claim 10 ,

wherein the packing portion includes

a body member having a second hole into which the sub-case is inserted; and

a protrusion member formed at one end of the body member and in close contact with the outer circumferential surface of the sub-case inserted into the second hole.

12 . The fuel cell membrane humidifier of claim 11 , wherein the body member includes two or more second holes into which two or more sub-cases are able to be inserted, and two or more protrusion members are included and formed in contact with outer circumferential surfaces of the two or more sub-cases.

13 . The fuel cell membrane humidifier of claim 11 , wherein the protrusion member presses and comes into contact with the outer circumferential surface of the sub-case according to an elastic force to make a space on the mid-case side and a space on the cap side airtight.

14 . The fuel cell membrane humidifier of claim 10 , wherein the gasket further includes a damping cap portion formed over an upper surface of the packing portion, an upper surface of the sub-case, and an upper surface of the cartridge to absorb the vibration in the vertical direction of the cartridge.

15 . The fuel cell membrane humidifier of claim 10 ,

wherein the packing portion includes two or more second holes into which two or more sub-cases are able to be inserted, and

the damping portion is formed on an outer circumferential surface of each of the two or more sub-cases, to absorb a vibration in a vertical direction with a movement in the vertical direction suppressed by the packing portion.

16 . The fuel cell membrane humidifier of claim 10 , wherein an adhesive is applied to an inner circumferential surface of the sub-case such that the sub-case is coupled to the end of the cartridge.

17 . The fuel cell membrane humidifier of claim 10 ,

wherein the edge portion includes edge wings protruding in both directions, and

the edge wings are interposed with the groove formed at the end of the mid-case filled with the edge wings to seal the inside and outside of the mid-case, the mid-case, and the cap.

18 . The fuel cell membrane humidifier of claim 10 ,

wherein each of the packing portion and the edge portion has a first hardness of 20 to 70 Shore A, and

the fuel cell membrane humidifier further comprises a reinforcing member formed to be inserted into at least a portion of the packing portion and at least a portion of the edge portion, the reinforcing member having a second hardness higher than the first hardness.