Application description and advantages of inner supporting bag air duct In the indoor air-conditioning system, the air temperature is usually transmitted through the air duct system, the existing air duct is mostly made of metal or plastic rigid air duct. In recent years, fiber fabric duct has appeared in air conditioning system, which has the advantages of simple structure, convenient installation, easy cleaning and low production cost. However, in practical use, the fiber fabric duct is usually irregular in shape without ventilation because it relies on static pressure to maintain its shape, and at the same time, due to the instantaneous change of shape during ventilation, usually accompanied by noise and huge vibration, seriously affect the use and life of the duct. In order to solve the problems existing in the prior art, an air duct system with inner supporting fiber fabric is proposed, which can keep the appearance by itself. The inner support system is support…