What happened when the alcohol lamp exploded for no reason?

For no reason, is it to point out the fire state or the non-ignition state?

If there is no ignition and no external force, it is only possible that the alcohol expands when heated, and the wick is well sealed, which makes it burst, but this possibility is very small;

If it is an ignition condition, there are many possibilities. The biggest possibility is that too much or too little alcohol can cause the alcohol lamp to explode, so the operation specification is generally 1/4-2/3 volume;

If this is not the problem, check whether there are cracks;

If not, check whether there are side branches when the wick burns, which will make the bottle heat unevenly.