| 摘要 |
The invention concerns a cooling device comprising, inside a substantially cylindrical outer casing (2) having a side wall traversed by orifices (3) a first flow path consisting of a tube (16) extending in an axial direction of the cylindrical casing and a second flow path (17) consisting of a plurality of tubes (17a, 17b, 17c) fixed by maintaining means (14a, 14b, 14c, 14d) in substantially parallel arrangements in an axial direction of the cylindrical casing (2), a duct (4) for the intake of exhaust gases, a duct (6) for evacuating exhaust gases and means for dispensing (15a, 15b, 15c, 15d) exhaust gases arranged inside the cylindrical casing (2) to cause the exhaust gases to pass through the first and through the second flow paths. Switching means consisting of a valve controlled (11) for opening and closing one or the other at least of the flow paths (16, 17) enable to cause the gases to pass inside the first flow path (16) with little heat loss or inside the second flow path (1) with high heat loss. |
