Injectors with variable inclination regulated by Peltier and piezoelectric effect

Abstract

Injectors with variable inclination regulated by Peltier and Piezoelectric effect Passive cooling flow modulation device (1) mounted in a wall (2) of a turbomachine separating a first zone (100) from a second zone (200) colder than the first, said wall (2) having an orifice (3) putting the first zone (100) in communication with the second zone (200).The device (1) comprises a Peltier module (4) configured to generate an electrical voltage from a temperature gradient threshold, and housed in said wall (2) of the turbomachine, a steerable injector (5, 500) mounted on said orifice (3) and configured to direct the cooling airflow upon its entry into the second zone (200), and a piezoelectric actuator (6) electrically coupled to the Peltier module (4) and configured to modify the steerable injector in order to change the direction of the cooling airflow as a function of the voltage delivered by the Peltier module (4) which depends on the temperature gradient observed by the Peltier module (4). Fig. 1.

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