1results about How to "Easy to catch fire" patented technology

A combustion device is provided. A controller (8) accumulates the combustion time of a burner and stores the combustion accumulation time (Ta). The controller (8) sets a first lower limit value (A) and a second lower limit value (B) higher than the first lower limit value (A) as lower limit values of the air excess ratio of the mixture gas at the time of the re-ignition operation of an ignition mechanism (32) when the combustion accumulation time (Ta) is less than a prescribed set time and when the combustion accumulation time (Ta) is equal to or greater than the set time, respectively, which are lower than the initial value of the air excess ratio.