CN201373474Y - Burner head of high power gas stove - Google Patents

Abstract

The burner head of a high-power gas stove includes a hollow cylindrical shell, and the upper end of the shell is connected with a combustion chamber. Its main feature is that the combustion chamber is a hollow cylinder formed by stacking multiple annular pieces. The lower end face of the ring is sealed, and each annular piece has a wavy surface, and the flame hole of the combustion chamber is formed between the crest of the curved surface of the upper annular piece and the curved trough of the lower annular piece. The utility model has the advantages of a large number of fire holes and a large total fire hole area, which is conducive to the circulation and uniform mixing of the mixed gas, and is easy to form a stable gas jet, so that the gas burns more fully and improves the thermal efficiency of the high-power gas furnace. , reducing gas consumption.

Description

Burner head of high power gas stove

technical field

The utility model relates to a high-power gas furnace using liquefied gas, natural gas and the like as fuel, in particular to a burner head structure of the high-power gas furnace.

Background technique

Commercial gas furnaces use high-power gas furnaces, and the power of such high-power gas furnaces is at least 30KW. The burner structure of the high-power gas furnace includes a hollow cylindrical shell, which is connected to the intake pipe, and the mixture of gas and air enters the shell through the intake pipe. The upper end of the shell is connected to the combustion chamber. The combustion chamber is equipped with multiple The gas mixture in the casing is sprayed out through the flame hole to form a flame. In the prior art, the combustion chamber in the furnace head is a casting, and the flame holes on the combustion chamber are drilled one by one with a machine. This structure not only has low production efficiency, but also is difficult to process dense dense Flame holes, the number of fire holes is small, and the total area of fire holes is small, which is not conducive to the circulation and uniform mixing of the mixed gas, and it is difficult to form a stable gas jet, resulting in insufficient combustion of gas and large gas consumption. On the other hand, there is no structure in the shell of the burner to help the further mixing of gas and air. After the gas and air enter the shell of the burner, they are directly ejected from the flame hole of the combustion chamber, which further leads to poor combustion of the gas. full. In order to make up for this defect, the existing technology adopts a high-power fan (≥370W) to blow strong wind into the burner shell to enhance the mixing of gas and air, but this will increase energy consumption and generate noise pollution.

Contents of the invention

The purpose of the utility model is to provide a burner head of a high-power gas stove with more sufficient combustion.

For this reason, the burner head of the high-power gas stove described in the utility model includes a hollow cylindrical shell, and the shell is connected with an air intake pipe, and the mixture of gas and air enters the shell through the air intake pipe, and the upper end of the shell is connected to the There is a combustion chamber, and the combustion chamber is provided with a plurality of flame injection holes, and the mixed gas in the casing is sprayed out through the flame injection holes to form a flame. In particular, the combustion chamber is a hollow cylinder formed by stacking multiple annular pieces, and the hollow cylinder The lower end face of the body is sealed, and each annular piece has a wavy curved surface, and the flame injection hole of the combustion chamber is formed between the crest of the curved surface of the upper annular piece and the curved trough of the lower annular piece. Since the fire hole of the combustion chamber is composed of the wavy surface of the upper and lower annular plates, each crest and trough constitutes a fire hole, so the number of fire holes is large, and the total area of the fire hole is large, which is conducive to mixing The circulation and uniform mixing of gas can easily form a stable gas jet and make the gas burn more fully.

The utility model has the advantages of improving the thermal efficiency of the high-power gas furnace and reducing the gas consumption.

Description of drawings

Fig. 1 is the internal structure perspective view of the utility model embodiment;

Fig. 2 is a perspective view of the dish-shaped sealing plate connected to the lower end surface of the combustion chamber;

Figure 3 is a perspective view of a monolithic annular sheet forming a combustion chamber;

Fig. 4 is the orthographic projection view of the upper strata wind uniform plate in Fig. 1;

Fig. 5 is an orthographic projection view of the lower air uniformity plate in Fig. 1 .

Detailed ways

Referring to Fig. 1 , the burner head of a high-power gas furnace includes a hollow cylindrical shell 1, which is connected with an air inlet pipe 2, and the mixture of gas and air enters the shell 1 through the air inlet pipe 2. The upper end inside the housing is connected with a combustion chamber 3 . The combustion chamber 3 is a hollow cylinder formed by stacking a plurality of annular pieces 4 , and a disc-shaped sealing plate 5 is connected to the lower end surface of the hollow cylinder. The shape of the dish-shaped sealing plate 5 is shown in FIG. 2 . The disc-shaped sealing plate 5 seals the lower end surface of the hollow cylinder formed by stacking a plurality of annular plates 4, so as to prevent the mixed gas from directly entering the combustion chamber 3 from the lower end surface of the hollow cylinder. The number of layers of the annular sheet 4 is determined according to the height of the combustion chamber. Referring to Fig. 1 and Fig. 3 at the same time, each annular sheet 4 is a wavy curved surface, and the flame injection hole 6 of the combustion chamber 3 is formed between the curved surface crest of the upper layer annular sheet and the curved surface trough of the lower floor annular sheet, thus making the flame injection hole very Intensive, large in number, the total area of the fire hole is large, so that the gas burns more fully. The annular sheet 4 can be made by a stamping process, and the annular sheets 4 of various layers can be welded together. In order to facilitate the lamination and assembly of the annular pieces, all the annular pieces are connected together on the positioning pin 7 .

As a further improvement, in this embodiment, an air evening plate 8 is provided in the housing 1 , and the air evening plate is provided with a plurality of through holes 9 , and the air evening plate 8 is blocked between the intake pipe 2 and the combustion chamber 3 . When the mixture of gas and air passes through the air uniform plate 8, the gas and air can be mixed more fully, thereby helping the gas to burn more fully.

The shape of the through hole 9 on the wind evening plate is not limited to a circle, for example, it may be oval or square. The number of uniformity plates can be flexibly set, but as the best implementation mode, see Fig. 1, Fig. 4, and Fig. 5. In this embodiment, only two uniformity plates 8, 10 are set, and the through holes on the two uniformity plates 9 and 11 are all round holes, and the aperture of the through hole 11 of the air uniform plate 10 near the intake pipe is greater than the aperture of the through hole 9 of the air uniform plate 8 near the combustion chamber. Two wind evening plates 8,10 are supported by angle irons 12,13. The advantage of setting the number of evening plates to only two is that it can not only achieve the effect of fully mixing the gas and air, but also avoid the increase in the volume of the entire burner due to the installation of more evening plates. The effect of improving the mixing effect is no longer noticeable. Setting the through holes 9, 11 as circular holes is the most convenient for processing. The aperture of the through hole 11 is larger than the aperture of the through hole 9, so that the mixing process of gas and air has a gradual mixing effect, and the mixed gas is evenly filled around the combustion chamber 3 . The distance between the two air uniform plates 8 and 10 is preferably 15-25 mm, because the eddy currents between them will interfere with each other if the distance is too small, which will affect the mixing effect, and if the distance is too large, the volume of the burner head will be increased.

Further improvement, the aperture (referring to the diameter, the same below) of the through hole 11 of the air uniform plate 10 near the intake pipe is preferably φ8～φ14mm, the number of through holes is 6, and the through hole of the air uniform plate 8 close to the combustion chamber The aperture of hole 9 is preferably φ3～φ8mm, and the number of through holes is 80～150. This is conducive to more complete combustion of gas, improved thermal efficiency, and it is not easy to form a yellow fire, and it is not easy to leave the flame when the fire is high, and it is more stable when the fire is small, and it is not easy to be blown out by the wind.

The above embodiments and accompanying drawings are descriptions of the utility model, and do not constitute limitations to the protection scope of the utility model. The utility model can also have multiple equivalent changes or deformations on the basis of the described embodiments. For example, the outer shape of the housing 1 can be cylindrical or other shapes, such as a truncated cone, and so on. All covering Changes or deformations of the technical features of the claims all belong to the protection scope of the present utility model.

Claims (5)

1, the burner of high power gas stove, comprise a hollow tubular shell, housing is connected with air inlet pipe, combustion gas and Air mixing gas enter housing through air inlet pipe, the upper end of enclosure interior is connected with the combustion chamber, the combustion chamber is provided with a plurality of fire jetting holes, gaseous mixture in the housing forms flame through the fire jetting hole ejection, it is characterized in that: the combustion chamber be one by the stacked hollow cylinder that forms of polylith ring segment, the lower surface sealing of hollow cylinder, every ring segment undulate curved surface, the fire jetting hole of formation combustion chamber between the curved surface crest of upper strata ring segment and the curved surface trough of lower floor's ring segment.

2, the burner of high power gas stove as claimed in claim 1 is characterized in that: be provided with air uniform plate in housing, air uniform plate offers a plurality of through holes, and air uniform plate blocks between air inlet pipe and combustion chamber.

3, the burner of high power gas stove as claimed in claim 2, it is characterized in that: described air uniform plate has two, through hole on two air uniform plates all is a circular hole, near the through-hole aperture on the air uniform plate of air inlet pipe, greater than near the through-hole aperture on the air uniform plate of combustion chamber.

4, the burner of high power gas stove as claimed in claim 3 is characterized in that: two air uniform plates are at a distance of 15～25mm.

5, the burner of high power gas stove as claimed in claim 3, it is characterized in that: the through-hole aperture of the air uniform plate of close air inlet pipe is φ 8～φ 14mm, number of openings is 6, and the through-hole aperture of the air uniform plate of close combustion chamber is φ 3～φ 8mm, and number of openings is 80～150.

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