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The heating furnace shuts down due to high negative pressure

2017-12-10View Original

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What is the reason why the heating furnace shuts down due to excessive negative pressure? Please explain it from a theoretical perspective
Reply #22017-12-10
Backfire usually occurs only when there is a positive pressure in the furnace. Backfire occurs when the speed at which the mixture of air and gas flows out of the burner nozzle is lower than the speed of flame propagation, causing the flame to return inside the burner to burn – this is what is known as backfire. Reasons for tempering: 1. Positive pressure operation in the furnace chamber ; 2. Low gas pressure ; 3. The gas pipeline is not equipped with a flame arrester ; 4. The damper adjustment is too large. Methods to prevent tempering: 1. Operate the furnace under slight negative pressure ; 2. Pay attention to gas pressure operation ; 3. Install flame arresters on gas pipelines ; 4. Adjust the damper scale reasonably
Reply #32017-12-10
The negative pressure was too high; the airflow inside the furnace was too fast, which blew out the pilot light
Reply #42017-12-10
Well, it seems similar. Are there any other explanations?:D
Reply #52017-12-10
Simply put, the high negative pressure extinguished the lamps and burners that were not burning properly
Reply #62017-12-11
Simply put, high negative pressure means that the main burner and the pilot light are deprived of air
Reply #72017-12-11
The negative pressure was too high, which extinguished the fire; the flame was pulled away and could no longer burn.
Reply #82017-12-11
Flame extraction? Can it be understood as heat being removed, causing the temperature to drop and thus the engine to stop working?
Reply #92017-12-11
Is it “hui” or “hui”? !
Reply #102017-12-11
Yes, it will. I typed it wrong{:1_90:}

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