JPH0137646B2 - - Google Patents

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.

Originally, gas burners are compatible with natural convection type or forced air type combustion, and the ideal burner is to have no risk of backfire and to be able to supply sufficient air.

A burner close to this ideal was developed in 1974 by having multiple cylinders with square outer cross-sectional shapes installed, with gas passages formed between the cylinders, and oxygen being supplied through the cylinders. It is known from Publication No. 17168.

However, since the inner cross-sectional shape of the cylinder is circular and does not follow the outer cross-sectional shape, there are parts where the outside and inside of the cylinder come close to each other and parts where they separate. The air supplied through the body and the gas sent out through the gas passage formed between the cylindrical bodies tend to mix well in some areas and in others not, making it difficult to obtain a uniform flame.

The object of the present invention is to obtain a gas burner free from such problems, and a plurality of cylinders 1 having a polygonal cross-sectional shape on the outside are arranged in a storage chamber 6a with a constant interval 2 between each side thereof. The cylinder bodies 1 are installed so that the intervals 2 are linearly connected to each other, and the lower surface of the interval between these cylinders 1 is closed to make the inside of the interval 2 a gas passage, and the upper end opening of the interval 2 is a flame port 3. The lower part of the cylindrical body 1 is an air supply port 4 that supplies all the air necessary for combustion, and the storage chamber 6
A gas supply path 6 is provided around a, and the gas supply path 6
The inner wall surface of the cylindrical body 1 is aligned with the outer wall surface in a structure in which the cylindrical body 1 and the storage chamber 6a are communicated with each other through a plurality of through holes 11.

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

In the illustrated embodiment, a storage chamber 6a formed inside a gas supply channel 6 having a gas supply port 7 on the side surface is made of a heat-resistant material such as a ceramic material or a metal plate with both ends open, and the outer cross-sectional shape is a polygon. A large number of cylindrical bodies 1 with the inner wall surface aligned with the outer wall surface are arranged with a constant interval 2 and the intervals 2 are linearly connected to each other, and the interval 2 between each cylindrical body 1 is One side is provided with a slit-shaped flame port 3, and the bottom of the storage chamber 6a except for the lower part 10 of each cylinder 1 is shielded with a separator plate 9 made of the same material as the cylinder, thereby forming a gas burner.

Thus, if fuel gas G is supplied from the gas supply port 7 of the gas supply path 6 to the slit-shaped flame port 3 through the interval 2, the fuel gas G will be ejected from the flame port 3 in the form of a thin film, and the air A will flow through each cylinder. When the gas is ejected above the body 1, it flows evenly from both sides of the gas flame F so as to sandwich the gas flame F, thereby ensuring good contact mixing with the flame F. As a result, all of the air A necessary for combustion of the fuel gas G is supplied as secondary air, so that the fuel gas G and the air A are sufficiently mixed and complete combustion is performed. Therefore, unlike a Bunsen gas burner, a mixture of fuel gas G and air A is not created prior to combustion, so there is no tendency for backfire, and sufficient air can be supplied without the need for air adjustment. The gas burner mouth load can be made sufficiently large, and furthermore, the gas burner input change can be freely adjusted. and the first
In the one shown in the figure, the cylinder 1 has a right triangular cross section, and a large number of cylinders are combined to form a rectangular gas burner as a whole.

Furthermore, in the one shown in FIG. 2, the gas supply passage 6 is hexagonal, and a large number of cylinders 1 having an equilateral cross-sectional shape are installed in the inner storage chamber 6a, and the inner wall 6b of the gas supply passage 6 is By providing through holes 11 at the corners, the fuel gas G flows through the gas supply chamber 6 as shown by the arrow, and flows into the space 2 between each cylinder 1 through each through hole 11, and the fuel gas G is dispersed toward the center of the gas burner. Therefore, the ejection pressure of the fuel gas G is equalized over the front surface of the flame port 3 of the gas burner, so that uniform combustion can be performed.

The air A can be supplied to the combustion gas G by a natural convection method using the gas jet pressure, or as shown in the third figure, a pressure chamber and a pressure dividing plate 13 are provided inside the gas supply path 6 and the lower surface of the storage chamber 6a. An air supply chamber 12 having an air supply chamber 12 may be integrally provided, and the air supply may be supplied by forced air blowing from this air supply chamber 12.

Reference numeral 14 indicates an intake port provided on the side surface of the air supply chamber 12.

According to the present invention, the gas supply path 6 is provided around the storage chamber 6a, and the gas supply path 6 and the storage chamber 6a are communicated with each other through a plurality of through holes 11.
The plurality of cylinders 1 are arranged at a constant interval 2 between each side thereof.
and are installed so that the intervals 2 are linearly connected to each other, and the lower surfaces of the intervals 2 of these cylinders 1 are closed,
The space 2 is a gas passage, the upper end opening of the space 2 is a flame port 13, and the lower end of the cylindrical body 1 is an air supply port 4 for supplying all the air necessary for combustion. Even in a burner where the gas passage is between the cylindrical bodies 1, fuel gas can be supplied to the gas passage formed in the interval 2 from multiple locations around the gas passage, and thereby the gas passage can be supplied as uniformly as possible. ,
The cylindrical body 1 can supply fuel gas and
Since the inner wall surface is aligned with the outer wall surface, the air supplied through the cylindrical body 1 can be sufficiently and uniformly supplied to the gas ejected from the flame port 13, and the air can be sufficiently and uniformly supplied to the gas ejected from the flame port 13 over the entire area of the flame port 13. A stable and uniform flame can be obtained.
Since the flame does not spread in the air supply section, it is effective in making the combustor using this more compact.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway plan view showing one embodiment of the present invention, Fig. 2 is a partially cutaway plan view of another embodiment, and Fig. 3 is a partially cutaway side view thereof. be. 1... Cylindrical body, 2... Interval, 3... Burning port, 5... Corner, 6
...Gas supply line.

Claims (1)

[Claims] 1 A large number of cylindrical bodies 1 having a polygonal cross-sectional shape on the outside are arranged in a storage chamber 6a at a constant interval 2 between each side surface thereof.
and are installed so that the intervals 2 are linearly connected to each other, and the lower surfaces of the intervals between these cylinders 1 are closed to make the inside of the intervals 2 a gas passage, and the upper end opening of the intervals 2 is used as a flame outlet. 3, and the lower part of the cylindrical body 1 is an air supply port 4 for supplying all the air necessary for combustion, and a gas supply path 6 is provided around the storage chamber 6a, and the gas supply path 6 and a storage chamber 6a are communicated through a plurality of through holes 11, and the inner wall surface of the cylindrical body 1 is aligned with the outer wall surface of the gas burner.