An air foam generator is a core component of foam fire extinguishing systems. It operates by using the pressure from a fire pump to mix foam solution with water in a proportion, creating a high-speed jet as the mixture passes through the nozzle of the air foam generator. This jet draws in surrounding air, achieving a gas-liquid mixture that instantly produces a large amount of uniform, fine air foam. The expansion ratio of the air foam generator can reach 6-10 times, with the generated foam having characteristics of low density and strong coverage. It can quickly cover the surface of burning materials, isolate oxygen, and suppress combustion reactions, playing a crucial role in extinguishing fires in places prone to flammability and explosion, such as oil storage tanks and chemical workshops.