JPS60256719A - Gas burner - Google Patents

Abstract

PURPOSE:To prevent the occurrence of a backfire, by juxtaposing pipes of which both ends are open, with a specified distance provided from one another, and by using the body of each pipe as an air feed passage, as well as to use the inside distance of a pipe as a burner port. CONSTITUTION:A number of pipe bodies 1 of which both ends are open are juxtaposed, with a specified interval provided from one another. The inside distance 2 of a pipe body 1 is used as a slitted burner port 3, while the inside body of each pipe is used as an air feed passage 4. Fuel gas (G) is injected from the burner port 3 in the state of a film, and the air (A), passing through the air feed passage 4, is supplied from the upper side of each pipe body 1 so as to surround gas flames from both sides. The air is contacted well to flames (F) and is mixed well with the fuel gas, bringing the flames into complete combustion. All the air (A) necessary for combustion is sufficiently supplied as the secondary air, not as the primary air. With such an arrangement, the tendency of occurrence of backfire is completely removed, since the gas (G) and the air (A) will not be premixed with each other in the inside of a burner port 3.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas burner used in gas burners for hot water supply and other gas burners.

The ideal condition for a burner is that it is compatible with natural convection or forced draft combustion, and that there is no risk of packfire and that sufficient air can be supplied.

The purpose of the present invention is to obtain a burner that is close to the ideal, and includes a large number of cylindrical bodies (1) with both ends open, placed side by side with a certain interval (2) between them. The minus side of the interval (2) between the cylinders (1) is used as a flame port (3), and the inside of each cylinder (1) is formed as an air supply path (4).

The invention will be explained with reference to embodiments shown in the drawings.

In the illustrated embodiment, a heat-resistant cylinder made of a ceramic material or a metal plate is opened at both ends inside the gas supply chamber (6), which has a gas supply port (7 holes) on the side and is surrounded by a double wall (8). Body (1
) are arranged at regular intervals (2), and each cylinder (1)
The minus side of the interval (2) is made into a slit-shaped flame port (3), and the inside of each cylinder (1) is formed as an air supply path (4), and the lower part (a) of this air supply path (4) Gas supply chamber (6) except for
A separator (9) made of the same material as the cylinder (1) is attached to the bottom of the cylinder.
It was constructed into a gas burner with a shield.

Thus, if fuel gas G is supplied to the slit-shaped flame opening (3) from the gas supply port (7) of the gas supply chamber (6) through the interval (2), the fuel gas G will form a thin film across the flame opening (3). At the same time, the air A is supplied from below (A) of each air supply path (4), and when it is ejected above each cylinder (1), it flows between both sides of the gas flame F, so that the flame F Good contact mixing is achieved. This allows the fuel gas G to be supplied as secondary air to supply all of the air A required for the combustion of the fuel gas G.
and air A are sufficiently mixed and complete combustion takes place. Therefore, since the Bunmon type does not create a mixture of fuel gas G and air A before combustion like a spanner, there is no tendency for rack fire, and there is no need for air adjustment. Since the gas can be supplied, the load on the gas burner nozzle can be made sufficiently large, and furthermore, the input change of the gas nozzle can be freely adjusted.

In the case shown in Fig. 1, the cylindrical body (1) is
A large number of triangles were combined to form a rectangular gas burner as a whole.

In addition, in the case shown in Fig. 2, the entire gas supply chamber (6) has a hexagonal shape, and inside this is a cylinder (1) with an equilateral triangular cross section.
In addition to installing a large number of gas supply chambers (6), a double wall (8
) By providing through holes α→ at the corners of the inner wall (8a), the fuel gas G flows along the inner wall (8a) as shown by the arrow and enters the corner of the gas supply chamber (6) from each through hole (11). The fuel gas G is supplied to the corner part (5) and flows from the corner part (5) into the interval (2) between each cylinder (1), and is dispersed toward the center of the gas burner, so that the gas outlet (3) of the gas burner is Since the ejection pressure of the fuel gas G is equalized over the entire surface, uniform combustion can be performed.

The air A can be supplied to the fuel gas G by a natural convection method using the gas jet pressure, or by providing a pressure chamber and a partial pressure plate 0 inside the lower surface of the gas supply chamber (6) as shown in the third figure. An air supply chamber (2) is integrally provided, and either ff2t[1, -'''1''・“18
0-~"11.1 also pressure chamber and partial pressure plate (to)
Needless to say, it can be used by switching to the natural convection type by opening all the channels.

The symbol 0 in the drawing indicates the air supply port provided on the side of the air supply chamber @.

In this way, according to the present invention, a cylindrical body with both ends open (
A large number of cylinders (1) are arranged side by side with a certain interval between them, and the minus side of the interval (2) of these cylinders (1) is made into a slit-shaped flame port (3), and each cylinder ( 1) Inside the air supply path (
4), the fuel gas G is ejected from the flame port (3) in a thin film form, and the air A passes through the air supply path (4) and flows from above the gas flame from both sides of the gas flame. Since it flows in a sandwiching manner, it is easy to achieve good contact mixing with the flame F and cause complete combustion.The air A required for combustion is not primary air, but is fully supplied as secondary air.Therefore, the gas G Since the air and air A are not premixed inside the flame port (3), there is no tendency for pack fire.Also, since the gas burner flame load can be sufficiently increased, input changes can be freely adjusted. flame mouth (
3) It has the effect of allowing uniform combustion to occur over the entire surface.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway plan view showing one example of implementing the present invention;
FIG. 2 is a partially cutaway plan view of another embodiment, and FIG. 3 is a partially cutaway side view thereof. 1... Cylindrical body 2... Interval 3... Burner port 4... Air supply path 5... 2 people outside the corner

Claims (1)

[Claims] 1. A plurality of cylinder bodies (1) with both ends open are arranged side by side with a certain interval (2) between them, and these cylinder bodies (1)
The minus side of the interval (2) is the flame port (3), and each cylinder (
1) A gaspahena with an air supply path (4) inside. 2. The gas burner according to claim 1, wherein the cylindrical body (1) has a triangular cross section, and a large number of these cylinders are assembled into a polygonal shape as a whole. 3 The cylinder (1) has an equilateral triangular cross section, and a large number of these cylinders are assembled into a hexagonal shape as a whole, and gas is supplied from each corner (5) into the interval (2) between each cylinder (1). A gas burner according to claim 1, characterized in that: