Gas Stove Safety Performance

- Sep 04, 2018-

  Once a gas stove leaks, it will cause accidents such as explosions and fires, resulting in personal injury and property damage. Therefore, the national standard has strict requirements on the amount of leakage. The gas leakage from the gas inlet to the valve is not more than 0.07L/h. The leakage of the control valve is not more than 0.55L/h, and there is no gas leakage from the gas inlet to the burner fire hole. Gas combustion will produce carbon monoxide and carbon dioxide and other waste gases, of which carbon monoxide is highly toxic, and poisoning is not easy to be detected. Most of the combustion gases of gas stoves are directly discharged into the kitchen, and cannot be discharged to the outside immediately. The concentration of carbon monoxide in the flue gas is too high, which will cause Potential hazard, the standard specifies that the concentration of carbon monoxide in dry cigarettes is not more than 0.05%.

  The heat load is the heating power. This project is one of the most important thermal performance indicators of gas stoves. The heat load is determined by the product structure and the gas combustion system. The furnaces with different heat loads must have matching ejector tubes and nozzles. , burner, head and other structures, the thermal load size can not be arbitrarily rated, the general stove heat load is between 3kW to 5kW, the national standard stipulates that there is a main fire in the stove above or above the eyes, the main fire converts the heat load: infrared The type is not less than 3kW, and the other types are not less than 3.5kW. At the same time, the deviation between the measured thermal load and the nominal value is not more than 10%.

  This project is the efficiency of the thermal energy utilization of gas stoves. It is the most important indicator for measuring the thermal performance of gas stoves. It is also the national energy policy control project. The thermal efficiency regulations in the national standards are mandatory, and the structure of embedded stoves and benchtop stoves is different. As a result, the overall level of thermal efficiency of the two is different. The overall level of thermal efficiency of the embedded stove is lower than that of the desktop stove. The standard requires that the thermal efficiency of the embedded stove is not less than 50%, and the thermal efficiency of the desktop stove is not less than 55%.

  In the gas stove, there will be accidental flameout caused by overflowing soup, wind blowing, etc. If there is no control measure, the gas will leak a lot, and the consequences are very serious. In order to prevent leakage, the gas stove must be equipped with a flameout protection device. The flameout protection device generally has Thermoelectric and ion sensing two control methods, the standard specifies that the valve opening time of the flameout protection device is not more than 15s, and the valve closing time is not more than 60s.

  Some gas cookers use AC power due to the diversification of functions and control, as well as gas-electric dual-purpose stoves that use gas and electric heating. Gas stoves are often used in hot and humid kitchen environments, so in addition to gas in this type of stove In addition to the safety requirements, there are strict requirements for its electrical safety performance. The standard requires anti-shock protection measures, reliable grounding measures, large insulation resistance, small leakage current and sufficient withstand voltage to ensure this. The use of the stove is safe.