PYROTECHNIC INFLATOR USING A THERMOELECTRIC DEVICE

摘要

A pyrotechnic inflator (52) using a thermoelectric device (100) decreases the temperature and pressure of a gas generated when the explosive (55) of the inflator (52) is detonated to simplify the structure thereof. The inflator includes the thermoelectric device (100) for receiving a power from an electronic control unit (53) to cool an inflator housing (56) in a predetermined temperature, and a linear flow passage (150) therein. A metal filter (66) is installed to one side of the flow passage (150) for eliminating minute particles included in the gas generated during the detonation of the explosive (55) and lowering the temperature of the gas. Upon the power supply to the inflator, the inflator housing (56) is cooled to reduce the temperature of the gas generated when the explosive (55) of the inflator is detonated and to decrease the peak explosion pressure, thereby simplifying the structure and facilitating the manufacturing of the inflator.