Forced full-premixing fuel gas combustion device enabling fuel gas to be completely combusted

Abstract

The invention discloses a forced full-premixing fuel gas combustion device enabling fuel gas to be completely combusted. The forced full-premixing fuel gas combustion device comprises a combustion head, a gas mixing structure, a fan and a fuel gas and air proportion control valve, wherein the fan comprises an air inlet and an air outlet, the gas mixing structure is of a barrel shape with two open ends and comprises an inner barrel wall and an outer barrel wall mutually connected, an annular inner cavity and an annular external cavity opening towards one end of the fan are arranged between the inner barrel wall and the outer barrel wall, one end of the gas mixing structure is connected with the air outlet, the other end of the gas mixing structure is connected with the combustion head, a fuel gas inlet is formed in the outer peripheral wall of the annular inner cavity, and a first fuel gas outlet is formed in the inner peripheral wall of the annular inner cavity. The forced full-premixing fuel gas combustion device has the advantages of being capable of carrying out full premixing on fuel gas and air, adjusting the fuel gas amount through air pressure, and more conveniently adjusting the fuel gas and air mixing proportion.

Description

technical field [0001] The invention relates to the technical field of gas equipment, in particular to a forced fully premixed gas combustion device which can use air pressure to adjust the amount of gas and can adjust the mixing ratio of gas and air to completely burn the gas. Background technique [0002] Gas must be mixed with air to be combusted. According to the mixing method and degree of gas and air, gas can be divided into diffusion combustion, partial premix combustion and full premix combustion. The pre-mixed air before the gas is ignited is called primary air, and after the gas is ignited, it continues to undergo oxidation reaction with the surrounding air, and this part of the air is called secondary air. Diffusion combustion has no primary air, and the air required for combustion is completely taken from secondary air. It is characterized by a flame-leaving area at the root of the flame, a long flame and insufficient combustion, low thermal efficiency, and no te...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the inability of the full premixed gas burner device in the prior art to adjust the gas output and the mixing ratio of gas and air, and to provide a gas volume that can be adjusted by wind pressure, and can be adjusted A forced fully premixed gas combustion device with a gas and air mixing ratio that can completely burn the gas

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