JPS6227325B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas burner used in a vertically long type gas combustion appliance that requires a small installation floor area.

In recent years, indoor appliances have become smaller in order to make more effective use of living space, and gas combustion appliances are no exception. A burner with a large burner, that is, a burner capable of burning with a large input compared to the flame opening area, is desired, and a blast type burner is conventionally known as one that satisfies this demand. However, this type of burner requires a device to supply pressurized air to the burner, which naturally results in high equipment and operating costs, and an unavoidable increase in noise, making it difficult for household use. On the other hand, there are also known Bunsen burners that have a large flame load and are difficult to backfire, in which slits such as wire mesh or lattice are provided in the flame opening at the tip of the cylindrical mixing tube. The problem with species conversion was that it lacked universality.

The purpose of the present invention is to eliminate the above-mentioned drawbacks, and to effectively utilize the draft expected in a vertically elongated combustion chamber to further increase the flame outlet load.In other words, even with the same input, the combustion To provide a gas burner that can be used as a gas combustion appliance with a small chamber area.

One embodiment of the present invention will be described below based on the drawings.The configuration is such that a mixing chamber 3 is formed following a bench lily section 2 having a primary air inlet 1 at the lower end of a cylindrical burner main body A. In a gas burner in which burner tubes 4 with a slightly smaller diameter are arranged in series and the upper end opening of the burner tubes 4 is the main flame port 5, the main flame port 5 has a lattice-shaped slit 6 (see Fig. 1).
Alternatively, a net-like slit 6 (see FIG. 2) is provided, and a cylindrical sleeve 7 is covered and fixed with a slight gap a on the outer periphery from the upper part of the mixing chamber 3 to the upper end of the burner cylinder 4. An annular space formed on the outer periphery from the upper part of the mixing chamber 3 to the upper end of the burner tube 4 is a side gas passage 8, and the upper end opening thereof is a side flame opening 9 surrounding the main flame opening 5. The lower part of the gas passage 8 for side heating and the upper part of the mixing chamber 3 are communicated with each other through several through holes 10, and a part of the gas in the mixing chamber 3 is passed through the through holes 10 into the narrow gas passage. 8', and a side flame b' is formed in the flame opening 9 for the side flame. Here, the side flame outlet 9 is not necessarily limited to a continuous annular shape, and its shape is arbitrary. In the figure, reference numeral 11 denotes a gas ejection nozzle, which is installed facing the primary air inlet 1.

With the above configuration, when installing this burner at the lower end of the vertical type appliance combustion chamber,
Although it is a Bunsen-type burner, the draft phenomenon caused by the combustion exhaust acts effectively to encourage and promote gas jetting, making it possible to achieve large in-but combustion as in a blast-type burner of the same size. When the gas introduced into the gas passage 8 for lighting through the passage hole 10 is ejected from the passage hole 10, it collides with the sleeve 7 of the gas passage 8' having a narrow area and is guided rearward and upward. As the cross-sectional area increases, the pressure is decelerated and the gas slowly rises through the side flame gas passage 8 to form a side flame b' at the side flame opening 9. Therefore, since the main flame b is supported by this stable side flame b', it is possible to achieve a large combustion input compared to the flame opening area. It not only provides the unique effects of a burner, but also withstands the lift phenomenon that occurs with slow-burning gas due to side flames, and also prevents the lift phenomenon that tends to occur during large impact combustion by ejecting a large amount of fast-burning gas. I can withstand it too. Therefore, large input combustion of all gas types is possible with a burner having a small flame opening area. According to the results of experiments, it was possible to burn approximately twice the amount of gas per unit area of the combustion chamber as with a conventional Bunsen burner.

As explained above, this invention has the universality that it can be used for high-load combustion as it is without any modification for gases with low combustion speeds or gases with high combustion speeds because side flames are effectively formed in relation to the main flame. Therefore, when changing the gas type, there is no need to replace the burner nozzle or other parts as in the past, and by using it in the vertical type gas combustion appliance that is the object of the present invention, the combustion draft can be effectively created. This makes it possible to burn a large amount of burnt gas, which is unimaginable with conventional Bunsen burners with the same burner opening area.In other words, it is possible to provide a gas combustion appliance with a smaller combustion area even with the same burner opening. Moreover, since it is a Bunsen type, it has the practical benefit of providing an extremely inexpensive and highly stable gas burner.

[Brief explanation of the drawing]

1 and 2 are longitudinal sectional front views showing two embodiments of the gas burner for a vertically elongated combustor according to the present invention. 1... Primary air inlet, 2... Bench lily part,
3...Mixing chamber, 4...Burner cylinder, 5...Main flame port,
6... Slit, 7... Sleeve, 8... Gas passage for side fire, 8'... Narrow gas passage, 9... Flare opening for side fire, 10... Through hole.

Claims (1)

[Claims] 1 In a gas burner of a vertically elongated combustor, there is a primary air inlet 1, a main flame port 5 with a slit 6 at the tip of a mixing chamber 3 following the primary air inlet 1, and a small gap a around the outer periphery of the mixing chamber 3 to allow gas A passage 8 is formed, and the gas passage 8 and the mixing chamber 3 are communicated with each other through several through holes 10 bored in the base peripheral wall of the burner cylinder 4.
A gas burner for a vertically elongated combustor, comprising a flame port 9 for a side flame, and a gas passage 8' communicating with the gas passage 8' having a cross-sectional area narrower than that of the gas passage 8 at the tip.