Gas burner and gas steam generator thereof

Abstract

The invention relates to the technical field of gas devices, in particular to a gas burner. The gas burner comprises a rectangular chamber, a gas mesh enclosure, a U-shaped cover plate and a combustion chamber base, wherein the top of the rectangular chamber is open, the bottom of the rectangular chamber is provided with a mounting recess, the combustion chamber base is inserted in the mounting recess, the gas mesh enclosure is of a U-shaped trough structure, the front end of which is open, the bottom edge of the gas mesh enclosure is inserted between a bottom flat surface and the mounting recess, heat-uniforming rib plates are also evenly distributed in parallel on a top flat surface of the combustion chamber base, and the cover plate is mounted on the top of the rectangular chamber. Theinvention further discloses a gas steam generator, which comprises a stove body and heat exchange smoke tubes, wherein the heat exchange smoke tubes are symmetrically arranged on the left and the right in the stove body, the middle of the lower part of the stove body is provided with a long chamber type combustion chamber along a front-rear direction, and the gas steam generator further comprisesthe gas burner in butt joint to the lower part of the combustion chamber. The gas burner has the beneficial effects as follows: the heat gathering performance of the gas mesh enclosure is sufficientlyutilized, burning is stable, flame is stable, and the thermal efficiency is high.

Description

technical field [0001] The invention relates to the technical field of gas devices, in particular to a gas burner and a gas steam generator thereof. Background technique [0002] The metal fiber surface burner has the characteristics of low NOx emission concentration. Since the metal fiber burner can burn gas in the way of infrared heat radiation combustion or blue flame combustion, it is an effective measure for energy saving and emission reduction. Therefore, this technology is widely used in industry and It has been widely used in civil combustion equipment, such as food processing, textiles, automobiles, glass manufacturing, and steel manufacturing. Patent No. 201110123849.4 discloses an intelligent anti-corrosion metal fiber surface burner, which belongs to the above-mentioned burner. This type of burner generally includes a pot ring, a diversion cone, an upper cover, a metal fiber embedded surface combustion component and a base, and is usually suitable for occasions ...

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Problems solved by technology

[0003] With the wide application of metal fiber surface burners, it is necessary for the burner to adapt to various occasions. For example, the combustion chamber of some steam generators is a long cavity tunnel structure, which puts forward new requirements for the use of the burner. If The heating efficiency is poor if multiple traditional burners are used, and its structure is not suitable for the overall structural layout. Because the cavity of the combustion chamber is heated unevenly, it is easy to cause leakage of the joint connecting the furnace tube

The patent document with the application number 201710527302.8 discloses a gas burner. This gas burner has a rectangular combustion chamber and a semi-circular gas grille, which can replace multiple common combustion stoves. However, there are still the following difficulties in actual use: The disadvantages are: one is that because a mixed gas cavity with a semi-arc section is formed between the rectangular bottom plate and the arc-shaped gas grill, uniform gas supply pressure cannot be obtained on the arc-shaped gas grill, so it is difficult to obtain Relatively homogeneous flame; the second is that it is difficult to ensure uniform combustion in the length direction of the long-cavity combustion chamber, except for the difference in flame height, and the swing of the flame along the length direction; The situation is relatively wasteful of energy, and the overall heat utilization rate is low. As recorded in the patent document, the flame ports of the combustion chamber are on both sides, and theoretically, the firepower directly above is relatively strong, resulting in waste; the fourth is that the gas is from the semi-circular arc combustion chamber The bottom enters and burns outside the arc-shaped gas grill. When the mixed gas is unstable, it is easy to go off fire, and there is a large difference between high and low temperature in the combustion chamber, and the overall heating efficiency is poor.

[0004] In addition, the current gas-fired steam generator still has the following problems. First, due to the lack of a relatively stable combustion stove, the flue pipe is heated unevenly, and the gas cannot be fully utilized; but the residence time of the flue gas in the flue pipe is short, resulting in a large amount of waste heat. Waste, even if a bent and turned flue pipe is used, its heat utilization rate is poor due to its horizontal arrangement

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