Patent ID: 7188434

Claim:
A dehumidification apparatus comprising an outer tubular container closed at its ends, a first and a second transverse grid elements located inside said tubular container, one grid element being spaced from the other and from a respective adjacent end of said tubular container and delimiting a receiving space therewith, a mass of molecular sieves located in said receiving space, heating elements in said tubular container, and first and second openings for communication of the interior of said container with the outside, an inner tubular jacket member extending from at least said first grid element for a distance greater than that between said first and said second grid elements, thereby shaping said receiving space for said sieves as an annular gap and providing a projecting section extending from said second grid element, and an annular partition member between said outer container and said inner jacket member at said projecting section of said inner jacket member, thereby delimiting an annular manifold space with said second grid element communicating with the outside through said first opening, and an end space adjacent to said second end of said external container communicating with the interior of said inner jacket member and with the outside through said second opening.