AUTO CONTROL SYSTEM OF AIR EMISSION SYSTEM OF CONTROLLABLE PITCH PROPELLER

摘要

PURPOSE: An auto control system of an air emission system of a controllable pitch propeller is provided to enable equipment to be used for a long period of time without the damage to the equipment since hot air is automatically blocked when an air emission pipe operates. CONSTITUTION: An auto control system of an air emission system of a controllable pitch propeller comprises a temperature in-sensor(3), a temperature out-sensor(4), a shut-off valve(10), a bleed air shut-off valve(2) and a vent-to-ambient valve(9). The temperature in-sensor and the temperature out-sensor check the temperature of the air. If the temperature of the air exceeds a reference temperature, then the shut-off valve operates to block the air. The bleed air shut-off valve operates to automatically block the air flow. Last, the vent -to-ambient valve is open, and thus the air gets out.