F - Mech Eng,Light,Heat,Weapons – 02 – C
Patent
F - Mech Eng,Light,Heat,Weapons
02
C
F02C 7/052 (2006.01) B01D 45/12 (2006.01)
Patent
CA 2635193
A centrifugal particle separator (202) is provided for removing particles such as dust particles from the compressed airflow (110) prior to reaching and cooling the turbine blades (122, 124, 126) of a turbine engine (100). A particle separator structure (208) has a side facing the axis (118) about which it rotates, the side including a plurality of pocket dividers (214) defining a plurality of pockets (216), and further defining an entrance cavity (206) for receiving the compressed air (110) containing particles. An inner flowpath coupling (218) includes a side opposed to the axis (118) that is positioned adjacent the particle separator structure (208) to define an airflow path (220) having an entrance communicating with the entrance cavity (212) and an exit (222), wherein the diameter (226) of the airflow outer flowpath (224) decreases from the entrance to the exit, and wherein a centrifugal force created by the centrifugal particle separator assembly (202) rotating around the axis (118) and the decreasing diameter (226) of the airflow path (224) which accelerates the rotational velocity of the air, forces the particles (228) to collect within the plurality of pockets (216) and the remaining compressed air is provided to cool turbine blades (122, 124, 126). A plurality of optional air accelerator fins (210) may be positioned within the entrance cavity (212). The combination of quickly accelerating air from non-rotating to rotating velocity, for example, by accelerator fins (210), and further subjecting the air and entrained particles to increasing rotational velocity resulting in an increasing centrifugal force field as particles (228) progress from the entrance (212) to the exit (222) of the separator assembly (202), efficiently removes the particles (228) from the air.
Gowling Lafleur Henderson Llp
Honeywell International Inc.
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