Double-ring combustor

The invention relates to the field of gas stoves and in particular provides a double-ring combustor which comprises a burner provided with a main fire channel and a secondary fire channel, a fire cover seat upper cover provided with secondary fire holes communicating with the secondary fire channel, and a fire cover forming main fire holes with the fire cover seat upper cover. The main fire holescommunicate with the main fire channel and the main fire holes and the secondary fire holes are distributed up and down. By arranging the main fire holes and the secondary fire holes which are distributed up and down, a fire transferring seam does not need to be formed, and the problem that the fire transferring seam is prone to being blocked is solved; gas from the main fire holes is ignited to form main fire and gas coming out of the secondary fire holes is ignited to form secondary fire; secondary combustion can be conducted on the lower portion of main fire formed by combustion of the gascoming out of the main fir