Air proportional control device for gas burner

Abstract

The invention relates to an air proportional control device for a gas burner, and specifically relates to an air proportional control device for a gas burner, and the air proportional control device can proportionally adjusts inflow of air with an opening of an air valve, so as to improve burning efficiency. The air proportional control device comprises a rotary knob which is configured to rotate to a required angle, a micro switch which is adjacent to the rotary knob, an air valve, a gas delivery pipe, an air flow regulator, and a mixing housing. When the rotary knob is rotated, the micro switch contacts with the inner surface of the rotary knob to connect with an electric contact. The air valve is electrically connected with the micro switch, and when the electric contacts of the micro switch are connected with each other, the air valve is opened to receive gas. The gas delivery pipe is hollow and is communicated with the air valve, and the gas delivery pipe transmits the gas flowing in the air valve. The air flow regulator is connected with the rotary knob, and when the rotary knob is rotated, flow of inflow air is proportionally regulated with flow of the gas transmitted in the air valve according to the rotation angle of the rotary knob. The mixing housing is connected with the air flow regulator, and an inner space is formed, and air and the gas transmitted from the air flow regulator and the gas delivery pipe are mixed in the inner space.

Description

technical field [0001] The present invention relates to an air ratio controller for a gas burner, and more particularly, to an air for a gas burner capable of adjusting the inflow of air in proportion to the opening of a gas valve, thereby improving combustion efficiency proportional controller. Background technique [0002] Generally, gas burners used for combustion devices such as boilers or gas water heaters can be classified into Bunsen type burners and premix type burners. [0003] The Bunsen type burner is configured to achieve complete combustion by supplying a minimum amount of primary air required for combustion to a nozzle portion from which gas is ejected, and secondary air to a flame forming portion. The advantage of the Bunsen type burner is that it has good combustion stability, but its disadvantage is that since the flame is generated by the secondary air, the length of the flame will be longer. [0004] Premix burners are configured to burn a premix gas tha...

AI Technical Summary

Problems solved by technology

[0009] However, since the gas burner 100 equipped with the air ratio controller according to the related art guides the introduction of gas only by the Venturi effect generated at the constriction section of the mixer 140 by the flow of the fed air, the air and gas The mixing ratio is not uniform, and the amount of air and gas is difficult to adjust

Therefore, there is a problem that the mixing ratio of gas and air delivered to the burner 130 is not uniform, so the flame produced by the burner is not uniform, and thus the combustion is not complete

Images