| 摘要 |
Device for exchanging heat and / or material made of a stack of fixed ventilators (1A, 1B) to encourage gas mixing. Each ventilator has four deflectors (1C) whose average normals are inclined and deduced from each other by rotating about their vertical axes. The sum of the four angles of rotation is 360 deg and the ventilators are stacked in successive horizontal layers in the middle of which each deflector forms part of two adjacent ventilators turning in opposite directions and so there is sufficient space between two adjacent deflectors for the gas to flow. Process for making a device as described above in which metal or other sheets are cut and folded and / or sintered, pierced or stamped to form pleated sheets, with or without projections, with the full surfaces forming the flat, folded, curved or pierced deflectors. Installation for the separation of gas from air or hydrocarbons or carbon dioxide or isotopes in a distillation column which includes at least one device as described above.
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