Variable turbine nozzle and valve
AssigneeHamilton Sundstrand Corporation
InventorsChristopher McAuliffe, John M. Dehais, Craig M. Beers
Life of this patent
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Abstract
An air cycle machine includes a turbine wheel, a turbine inlet nozzle, a valve body, and a poppet member. The turbine wheel is mounted to rotate within the air cycle machine and the turbine inlet nozzle is positioned to direct airflow thereto. The poppet member selectively extends into the turbine inlet nozzle and the valve body controls a pressure on the poppet member to move the poppet member relative to the turbine inlet nozzle to vary the size of the turbine nozzle directing airflow to the turbine wheel.
Claims20
An air cycle machine, comprising:
- a turbine wheel mounted to rotate within the air cycle machine;
- a turbine inlet nozzle in fluid communication with the turbine wheel to direct airflow thereto;
- a poppet member that selectively extends into the turbine inlet nozzle;
- and
- a valve body that controls a pressure on the poppet member to move the poppet member relative to the turbine inlet nozzle to vary the size of the turbine inlet nozzle directing airflow to the turbine wheel.
An environmental control system, comprising:
- an air cycle machine having a compressor wheel and a turbine wheel mounted on a common shaft for rotation therewith, the air cycle machine including a poppet member disposed adjacent the turbine wheel, and a valve body that controls a pressure on the poppet member to vary an amount of airflow to the turbine wheel.
Dependencies are inferred from the claim text.