Humidifier

1. A humidifier comprising:

a hollow-fiber-membrane module configured as a moisture exchanger between a wet gas and a dry gas, the module comprising a pair of flanges;

a support having a cylindrical inner circumference configured to support the module to be axially slideably accommodated therein;

a pair of stoppers fixed to the inner circumference of the support and engagable with the flanges respectively, to stop axial movement of the module;

wherein the support comprises a wet gas inlet passage, a wet gas discharge passage, a dry gas inlet passage, and a humidified gas discharge passage therein; and

wherein the support is provided with four bottomed cylindrical manifolds and a separator assembled together to define four chambers aligned in the axial direction, wherein the four chambers provide the passages, respectively.

2. The humidifier of claim 1 , wherein

the module comprises a tubular member, and a bundle of hollow fiber membranes accommodated in the tubular member.

3. The humidifier of claim 2 , wherein

the tubular member comprises:

a wet gas inlet communicating with the interior of the hollow fiber membranes to introduce a wet gas into the interior of the hollow fiber membranes;

a wet gas outlet communicating with the interior of the hollow fiber membranes to discharge the wet gas from the interior of the hollow fiber membranes;

a dry gas inlet communicating with the exterior of the hollow fiber membranes in the tubular member to introduce a dry gas to the exterior of the hollow fiber membranes; and p 2 a humidified gas outlet communicating with the exterior of the hollow fiber membranes in the tubular member to discharge a humidified gas from the exterior of the hollow fiber membranes,

the support comprises:

the wet gas inlet passage communicating with the wet gas inlet of the tubular member;

the wet gas discharge passage communicating with the wet gas outlet of the tubular member;

the dry gas inlet passage communicating with the dry gas inlet of the tubular member; and

the humidified gas discharge passage communicating with the humidified gas outlet of the tubular member.

4. The humidifier of claim 3 , wherein

the tubular member is provided at a first-end opening with the wet gas inlet, at a second-end opening with the wet gas outlet, at a circumferential wall portion with the dry gas inlet and the humidified gas outlet,

the module being arranged through two intermediate chambers so that ends of the module are in two end chambers, respectively.

5. The humidifier of claim 1 , wherein

a plurality of modules are arranged in the support.

6. The humidifier of claim 1 , wherein

the support is configured as a humidifier housing.

7. The humidifier of claim 2 , wherein

the tubular member is configured as a cylinder.

8. A humidifier comprising:

a hollow-fiber-membrane module configured as a moisture exchanger between a wet gas and a dry gas, the module comprising a pair of flange means;

a supporting means having a cylindrical inner circumference configured for supporting the module to be axially slideably accommodated therein;

a pair of stopper means fixed to the inner circumference of the supporting means and engagable with the flange means respectively to stop axial movements of the modules,

wherein the supporting means comprises a wet gas inlet passage, a wet gas discharge passage, a dry gas inlet passage, and a humidified gas discharge passage therein, and

wherein the supporting means is provided with four bottomed cylindrical manifolds and a separator assembled together to define four chambers aligned in the axial direction, so that the four chambers provide the passages, respectively.

9. The humidifier of claim 1 , wherein a flange and a stopper are arranged to form a gap between the flange and the stopper to allow the module to slide in an axial direction within the support.

10. The humidifier of claim 8 , wherein a flange means and a stopper means are arranged to form a gap between the flange means and the stopper means to allow the module to slide in an axial direction within the supporting means.

11. The humidifier of claim 1 , wherein the stoppers are engagable with the flanges respectively to stop axial movements of the module such that the stoppers are unengagable with axial ends of the module.

12. The humidifier of claim 8 , wherein the stopper means are engagable with the flange means respectively to stop axial movements of the module such that the stopper means are unengagable with axial ends of the module.

13. The humidifier of claim 1 , wherein the manifolds are fastened together with through-bolts that pass through all of the four manifolds.