DOSED OXYGEN SYSTEMS WITH DELIVERY TUBE ANTI-BLOCKAGE FEATURES AND METHOD FOR DELIVERING RESPIRATORY GAS

Oxygen-delivery systems (10B) are described. The systems (10B) may supply emergency respiratory gas on demand to aircraft passengers. To reduce risk of blockage of tubes delivering anti-blocking gas to the face masks worn by the passengers, the systems may be designed to provide a continuous trickle flow of respiratory gas, or one or more anti-blocking pulses of gas, into a delivery tube (34, 42). 本发明涉及氧气输送系统(10B)。该系统(10B)可根据飞机上乘客的需求提供应急呼吸气体。为了降低将防堵塞气体输送到乘客配戴的面罩上的管道被堵塞的风险，该系统可设计为向输送管(34、42)提供连续的涓流的呼吸气体或一个或多个防堵塞气体脉冲。