Upper air incoming burner with two ejectors

Abstract

The invention relates to an burner, in particular to an upper air incoming burner with two ejectors. Currently, an atmospheric upper air incoming burner has no complete inner ring fire ejector and is insufficient in burning and difficult in controlling flue gas generated during burning. A lower seat of the burner is further provided with an inner ring ejector which comprises an inner ring nozzle communicated with an air incoming cavity and an inner ring mixing cavity communicated with the air incoming cavity and opposite to an air outgoing end of the inner ring nozzle, and an air outgoing end of the inner ring mixing cavity is upwards bent and opposite to the inner end face of an inner ring fire cover. The inner ring ejector and an outer ring ejector share the air incoming cavity, so that the upper air incoming burner is simple in process, reasonable in structure and convenient in die manufacturing, and size of the burner can be reduced. The inner ring ejector is arranged for inner ring fire, so that mixing degree of fuel gas and air is increased, primary air needed for burning can be conveniently and sufficiently provided to enable the inner ring fire to burn sufficiently.

Description

technical field [0001] The invention relates to a burner. Background technique [0002] At present, only the outer ring fire has a complete ejector for the atmospheric updraft burner, and the inner ring fire nozzle is installed in the center of the burner base, which does not have a complete ejector structure. The primary air and secondary air required for combustion It can only be supplied from the periphery of the inner ring of the burner. When the burner is in the combustion working state, after sitting on the pot, because there is a higher pressure than the cold air between the burner and the pot, the external cold air enters, it is difficult to supply sufficient air to the inner ring, often causing primary air and secondary The air supply is insufficient, the combustion is not sufficient, and the smoke generated by the combustion is not easy to control, which affects the performance of the entire set of burners and loses the thermal efficiency of the outer ring. At th...

AI Technical Summary

Problems solved by technology

When the burner is in the combustion working state, after sitting on the pot, because there is a higher pressure than the cold air between the burner and the pot, the external cold air enters, and it is difficult to supply sufficient air to the middle and inner rings, often resulting in primary air and secondary air pressure. Insufficient air supply, insufficient combustion, and difficult to control the smoke generated by combustion, thus affecting the performance of the entire set of burners and losing the thermal efficiency of the outer ring

At the same time, the heat load of the inner ring cannot be increased, resulting in the problem that the central firepower is too small

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