Main burner and sub-burner for domestic gas range

The utility model relates to a main burner and sub-burner for domestic gas range. The structure of the utility model is given the optimization design. The utility model has the reasonable technical parameters of the inner diameter of the central tube of the main burner, the inner diameter of the outer ring tube of the main burner, the height of the combustion head chamber of the main burner, the inner diameter of the sub-burner, the height of the combustion head chamber of the sub-burner, etc. The sealing integrative structure of the original combustion head is changed into a composite structure. So the fire hole is non-perishable to block, the utility model has the advantage of convenient maintenance, and the defects of temper, blasting, serious overproof flue gas, unsafety, etc. can be overcome.