Patent ID: 7311760

Claim:
A temperature-humidity exchanger comprising: a permeable membrane permeable to moisture; a dry gas separator in which a low-temperature dry gas is caused to flow; and a moist gas separator in which a high-temperature moist gas is caused to flow, the temperature-humidity exchanger being constructed by repeatedly laminating the permeable membrane, the dry gas separator, the permeable membrane, and the moist gas separator in this order, wherein: the dry gas separator and the moist gas separator each comprise: a frame member; a plurality of flow channels separated from one another by partitions arranged in parallel in a central portion surrounded by the frame member, the plurality of flow channels being open in the laminating direction; a first supply manifold to which the gas caused to flow is supplied and a first exhaust manifold from which the gas caused to flow is discharged, the first supply and exhaust manifolds penetrating, in the laminating direction, those portions of the frame member which are respectively adjacent to both end portions of the plurality of flow channels; two aggregate communication grooves penetrating the frame member in the laminating direction and being constructed by removing the frame member so as to respectively establish communication between the both ends of the plurality of flow channels and the first supply and exhaust manifolds; first upper and lower seal formation plates which are in contact with the first supply manifold and bridged in a two-stage manner across one of the aggregate communication grooves in the laminating direction with a face contacting the permeable membrane being coplanar with a contacting face between the frame member and the permeable membrane, and which are offset from each other when projected onto each other; second upper and lower seal formation plates which are in contact with the first exhaust manifold and bridged in a two-stage manner across the other of the aggregate communication grooves in the laminating direction with a face contacting the permeable membrane being coplanar with a contacting face between the frame member and the permeable membrane, and which are offset from each other when projected onto each other; and second exhaust and supply manifolds disposed adjacent to the first supply and exhaust manifolds respectively and extending through the laminating direction; and the first supply manifold, the first exhaust manifold, the second supply manifold, and the second exhaust manifold of the dry gas separator are superposed on the second supply manifold, the second exhaust manifold, the first supply manifold, and the first exhaust manifold of the moist gas separator, respectively, via through-holes formed in the permeable membrane.