The invention discloses a novel range hood capable of separating and recycling oil and gas. The range hood is divided into six parts, namely a
smoke collecting hood, an air duct, a bracket, a shell, a filter, an oil collector and a
smoke exhaust pipeline. Wherein the exhaust fume collecting hood and the air duct act together to form a layer of flowing air protection film on the
visible surface of the range hood, so that the part is prevented from being adhered with greasy
dirt; meanwhile, the filter screen is used for blocking oil gas and adhering oil liquid in the oil gas, and then the oil liquid is collected in a unified mode for secondary utilization. When the range hood works, the air duct rotates, the external
impeller generates
positive pressure, so that air flows along the surface of the exhaust fume collecting hood and flows to the air duct, and the
impeller in the air duct generates negative pressure to suck the air and oil gas below into the range hood. A bent
pipe part of the
smoke exhaust pipeline extends into the building
flue and occupies about half space of the
flue, so that negative pressure is formed at the upper part of the bent
pipe relative to the lower part; meanwhile, a
check valve is further mounted at the upper part of the bent
pipe, is opened when the range hood works and is closed at other time, and the
check valve and the bent pipe are matched to ensure that smoke in a
flue of a building cannot enter the range hood.