Gas heating water heater's combustor

The utility model provides a gas heating water heater's combustor belongs to the combustor field. Gas heating water heater's combustor includes: the fire is arranged, and gas fuel passag's cross -section is reduced to the one end of keeping away from the connector by the one end of being close to the connector gradually, and the burner port sets up to a plurality of, a plurality of burner ports along fire row's axial interval distribution, arrange the admission line of connecting with the fire, the gas outlet moves towards the direction of being close to the burner port, and the one end of keeping away from the gas outlet on the admission line is provided with the air inlet, and the pipe setup that admits air is for a plurality of, and the gas outlet on a plurality of admission lines is cyclic annular interval distribution around the burner port. This kind of gas heating water heater's combustor can effectively improve near the concentration of the oxygen in burner port, effectively reduces near the temperatu