Cooling or heating apparatus for a circular housing

F - Mech Eng,Light,Heat,Weapons – 01 – D

Patent

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Details

F01D 11/24 (2006.01) F01D 25/08 (2006.01)

Patent

CA 2266343

The housing is heated or cooled to adjust its diameter and, in particular, the clearances between the ends of rotating blades and itself. The device consists in tube networks (1) extending over matching portions of the housing circumference and made up of a couple of distributors (3) and parallel tubes (2) between these distributors, the tubes (2) being alternately connected to one or the other distributor and provided with orifices blowing gas towards the housing. The countercurrent circulation in the tubes (2) enables to blow on each of the housing generators both gas highly heated by a longer passage in the tubes (2) and cooler gas having travelled a shorter distance in other tubes (2), thereby balancing the heat supply on each housing portion.

Le carter est échauffé ou refroidi pour régler son diamètre et, notamment, des jeux entre des extrémités d'aubes tournantes et lui. Le dispositif est composé de réseaux de tubes (1) s'étendant sur des portions complémentaires de circonférences du carter et composés d'une paire de distributeurs (3) et de tubes parallèles (2) entre ces distributeurs, les tubes (2) étant alternativement branchés à un des distributeurs ou l'autre et pourvus d'orifices de soufflage de gaz vers le carter. La circulation à contre-courant dans les tubes (2) permet de souffler sur chacune des génératrices du carter à la fois du gaz fortement chauffé par un trajet plus long dans les tubes (2) et du gaz plus frais ayant parcouru un trajet plus court dans d'autres tubes (2), ce qui équilibre l'apport de chaleur sur chacune des portions du carter.

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