METHOD AND A CIRCUIT FOR VENTILATING EQUIPMENT OF A TURBOJET BY THERMOELECTRICITY

摘要

The invention provides a method of ventilating equipment of a turbojet, the turbojet (10) having a cold zone (ZF) including a fan (14) upstream from a hot zone (ZC), the turbojet equipment (32) for ventilating being arranged in a ventilation space (30) available around the hot zone between a primary air stream passage (26) and a secondary air stream passage (28) of the turbojet, the method comprising taking ventilation air from one of the air stream passages in order to convey it to the ventilation space, and providing forced flow of the ventilation air by means of at least one electric fan (36) positioned inside the ventilation space and powered electrically by at least one thermoelectric generator (38) suitable for inducing a potential difference (ΔV) and positioned in a wall (40) between the ventilation space and the secondary air stream passage.

主权项

1. A method for the ventilation of equipment of a turbojet, the turbojet having a cold zone including a fan upstream from a hot zone, the turbojet equipment intended to be ventilated being arranged in a ventilation space available around the hot zone between a primary air stream passage and a secondary air stream passage of the turbojet, the method comprising taking ventilation air from one of the air stream passages in order to convey it to the ventilation space, and providing forced flow of the ventilation air by means of at least one electric fan positioned inside the ventilation space and powered electrically by at least one thermoelectric generator suitable for inducing a potential difference and positioned inside a wall separating the ventilation space from the secondary air stream passage, said electric fan being electrically powered at least after the turbojet has stopped, a first face of the thermoelectric generator being positioned beside the ventilation space so as to be cooled by the ventilation air, the operation of the fan being self-regulating, such that the fan stops operating when the cooling of the first face of the thermoelectric generator by the ventilation air has caused said potential difference to become less than a predetermined voltage threshold.