Venturi burner working principle is the use of gas energy inhalation air, gas under a certain pressure, with a certain flow rate from the nozzle, into the suction contraction tube, gas by itself energy into an air, in the ejector gas and an air mixture, and then through the head hole outflow, burning, form the flame.
Venturi burner usually uses gas to direct air, from this point, also belongs to the direct burner. According to the different gas pressure, wenturi burner can be divided into high pressure, medium pressure and low pressure ignition. Low-pressure self-priming burner is often used in civil gas stoves. Its main components are composed of ejector and burr head. The seemingly simple ejector also contains nozzle and shrink tube, mixed tube and pressure expansion tube.
The function of the ejector has the following three aspects: first, to emit low energy gas with high energy gas, and make the two mixed evenly. In atmospheric burners, air is usually injected from the atmosphere with fuel gas. Second, the required residual pressure is formed at the end of the injector to overcome the resistance loss of airflow in the head of the burner, so that the gas and air mixture can obtain the necessary speed at the fire hole outlet to ensure the stable operation of the burner. Third, transport a certain amount of gas to ensure the load required by the burner.