1. Low gas pressure and insufficient gas volume: During the use of a gas stove, the gas pressure drops too much, causing the gas outlet speed at the burner ports to slow down. When the flame propagation speed exceeds the gas outlet speed, the flame burns into the internal cavity, resulting in flashback.
Solution: Contact the gas company to stabilize the pressure. For natural gas, this situation rarely occurs; for liquefied gas, it is necessary to confirm whether the pressure regulator is functioning correctly and the gas supply is sufficient.
2. Gas hose is squeezed or bent
Solution: Check the pipeline, squeeze and bend it to ensure smooth gas flow inside the pipeline
3. Fire hole blockage: After long-term use of a gas stove, dirt may accumulate or other substances may fall into the fire holes of the burner cap, causing the fire holes to become smaller and the pressure in the gas airway to increase. If it encounters a gust of wind or water overflow pressure, it may cause the flame to retreat, and then burn into the interior of the burner head cavity, resulting in a flashback situation.
Solution: Regularly clean the burner ports and combustion system
4. Large burner ports or improper placement of the burner cap: Under the condition that the gas pressure and damper opening are constant, the amount of gas and entrained air is also constant. When the burner ports become larger or the burner cap is not placed properly, the gas outlet area increases, the gas outlet velocity decreases accordingly, and the flame is likely to enter the burner cavity, resulting in a flashback phenomenon.
Solution: Properly place the burner cap in the correct position, ensuring there are no gaps, align the burner holes with the white ignition needle, or replace the burner cap.