Spiral Exchanger and Method for Manufacturing Such an Exchanger

摘要

A spiral exchanger has a winding axis and comprises an outer sheet and an inner sheet secured to one another in a fastening plane before winding and delimiting a space for a fluid between them. The outer sheet and the inner sheet are wound on themselves and each comprises a plurality of flexible areas and a plurality of rigid areas, the flexible areas being more flexible than the rigid areas during folding. The flexible areas and the rigid areas are extended along the winding axis, and at least one flexible area of the outer sheet and at least one flexible area of the inner sheet that delimit the space between them form a pair of flexible areas that are aligned in a same radial direction.

主权项

1. A method for manufacturing a spiral exchanger comprising the following steps:
stamping, in an outer sheet and an inner sheet, a plurality of flexible areas and a plurality of rigid areas, the flexible areas being more flexible than the rigid areas during folding, and the flexible areas and the rigid areas being elongated along a winding axis; aligning the outer sheet and the inner sheet such that at least one flexible area of the outer sheet and at least one flexible area of the inner sheet form a pair of flexible areas that are aligned with one another in a same radial direction; permanently fastening the outer sheet to the inner sheet at predetermined locations to form a space between the outer and inner sheets; and winding the outer sheet and the inner sheet about the winding axis to form the spiral exchanger.