Integrated environmental control system

B - Operations – Transporting – 64 – D

Patent

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Details

B64D 13/08 (2006.01) B64D 13/06 (2006.01) F24F 3/06 (2006.01) F24F 13/08 (2006.01)

Patent

CA 2250060

An integrated environmental control system (10) is disclosed for providing conditioned supply air to loads such as a passenger cabin (56) of an aircraft. The system comprises at least two shafts (70, 78), each shaft having a fan (72, 80), compressor (74, 82), and turbine (76, 84) mechanically secured to the shaft (70, 78); common heat transfer components including primary (86) and secondary (88) heat exchangers, a reheater (90), and a condenser (92) with a water collector (130); fluid transfer lines that deliver the supply air separately through the compressors and turbines of each shaft (70, 78) and deliver the supply air in common through the common heat transfer components (86, 88, 90) to the load; and shutoff valves (96, 98) secured in fluid communication with each turbine (76, 84). Upon interruption in the the flow of cooled supply air out of a particular turbine (76, 84) secured to any of the shafts (70, 78), a shutoff valve (96, 98) shuts off transfer of the supply air to that particular turbine (76, 84) on that interrupted shaft (76, 78) and the remaining shafts and their respective fans (72, 80), compressors (74, 82), turbines (76, 84), and the common heat transfer components (86, 88, 90) continue to receive, condition and deliver the supply air to the load in a redundant operating mode.

Système intégré de régulation de l'air ambiant (10) assurant la régulation de l'apport en air climatisé dans des volumes tels que la cabine pour les passagers (56) d'un aéronef. Le système comprend au minimum deux lignes (70, 78) dont chacune comprend une soufflante (72, 80), un compresseur (74, 82) et une turbine (76, 84) fixée mécaniquement sur la ligne (70, 78); des composants communs de transfert de chaleur incluant des échangeurs de chaleur primaire (86) et secondaires (88), un réchauffeur (90) et un condensateur (92) pourvu d'un collecteur d'eau (130); des conduites de transfert de fluide acheminant séparément l'air à travers les compresseurs et les turbines de chaque ligne (70, 78) et transportant conjointement l'air par les composants communs de transfert de chaleur (86, 88, 90) vers la charge. Le système comporte en outre des vannes d'arrêt (96, 98) communiquant avec chaque turbine (76, 84). Si le flux d'air frais sortant d'une turbine (76, 84) montée sur l'une de deux lignes (70, 78) s'interrompt, une vanne d'arrêt (76, 78) interrompt transfert de l'air en direction de cette turbine (76, 84) sur la ligne interrompue (76, 78) tandis que les autres lignes et leurs soufflantes (72, 80), leurs compresseurs et leurs turbines (76, 84) ainsi que les composants communs de transfert de chaleur (86, 88, 90) continuent de recevoir, traiter et libérer l'air à porter en direction de la charge selon un mode de fonctionnement redondant.

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