GAS TURBINE ENGINE BUFFER COOLING SYSTEM

摘要

A gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a heat exchanger configured to exchange heat with a bleed airflow to provide a conditioned airflow. A bearing compartment is in fluid communication with the heat exchanger, and a first passageway communicates the conditioned airflow to the bearing compartment. The conditioned airflow is communicated radially between a bearing housing of the bearing compartment and a diffuser case and a nozzle assembly in fluid communication with the bearing compartment. A second passageway communicates the conditioned airflow from the bearing compartment and then through a plurality of openings of the nozzle assembly.

主权项

1. A gas turbine engine, comprising:
a heat exchanger configured to exchange heat with a bleed airflow to provide a conditioned airflow; a bearing compartment in fluid communication with said heat exchanger, and a first passageway communicates said conditioned airflow to said bearing compartment, said conditioned airflow is communicated radially between a bearing housing of said bearing compartment and a diffuser case; and a nozzle assembly in fluid communication with said bearing compartment, and a second passageway communicates said conditioned airflow from said bearing compartment and then through a plurality of openings of said nozzle assembly.