Adjustable type air supply device for graded combustion of fuel oil combustion machine

Abstract

The invention specifically relates to an adjustable type air supply device for graded combustion of a fuel oil combustion machine, aiming at solving the problems of an existing air supply device for the fuel oil combustion machine that the structure is heavy, the cost is high, the adjusting precision of the air amount ratio of primary air and secondary air is poor, and time and labor are wasted. The adjustable type air supply device comprises an air amount adjusting mechanism and a columnar main air barrel; a combustion machine draught fan is arranged at the upper end of the columnar main airbarrel; the columnar main air barrel is internally provided with a flame stabilizing disc; an annular upper baffle plate and an annular lower baffle plate are arranged on an outer side wall of the columnar main air barrel; a secondary air barrel is arranged at the lower side of the annular lower baffle plate; an annular hollow adjusting ring is arranged between the annular upper baffle plate and the annular lower baffle plate; the air amount adjusting mechanism comprises a secondary air hole; an inner wall of the annular hollow adjusting ring is of an opening structure; a plurality of air inlet holes are uniformly formed in the lower end face of the annular hollow adjusting ring; an air inlet hole I is formed in the annular lower baffle plate. According to the adjustable type air supply device provided by the invention, accurate adjustment of the air amount ratio of the primary air and the secondary air is convenient and rapid to realize; the adjustable type air supply device has the advantages of light structure, low cost and remarkable economic benefits.

Description

technical field [0001] The invention relates to an air supply device for a burner, in particular to an adjustable air supply device for staged combustion of a fuel burner. Background technique [0002] The staged combustion of the fuel burner means that during the combustion process, the primary air supply cannot meet the combustion air volume, so that the atmosphere in the main combustion zone is a reducing atmosphere, thereby reducing the temperature in the combustion zone and reducing the generation of thermal nitrogen oxides , and then supplement the secondary air at the flame front or periphery of the main combustion zone to fully burn the unburned fuel in the main combustion zone. Staged combustion can effectively reduce the nitrogen oxides in the combustion to meet the increasingly stringent requirements for combustion exhaust gas emissions. [0003] Most of the existing oil burner staged combustion devices use two fans to supply air separately, the structure is relat...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of heavy structure, high cost, poor adjustment accuracy of primary air and secondary air volume ratio, and time-consuming and labor-intensive adjustment of the existing air supply device for fuel oil burner, the present invention provides an adjustable air supply device for staged combustion of fuel oil burner. wind device

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