JPS59137711A - Burner device - Google Patents

Abstract

PURPOSE:To reduce hot oxidation, reduce NOX and make positive ignition by a method wherein secondary air required for combustion is restricted and a combustion box is divided into two sections with a partition plate. CONSTITUTION:A partition plate 6 for dividing a box 3 acts to divide a combustion box into an ignition electrode 5 and a combustion sensing flame rod 4 and has a recess 6a for transmitting flame at the center thereof. A part 3b of the upper opening 3a of the box 3 for the ignition electrode 5 divided by the partition plate 6 has a smaller opening area than that of the combustion sensing flame rod 4, mixture gas is accumulated to make a fast ignition, and in turn the other combustion sensing flame rod 4 makes the upper opening 3a large, causes the mixture gas to be hardly accumulated, and an explosive ignition of fuel caused by a delay in flame transmittance is prevented. The secondary air inlet port 7 is arranged at the bottom part of the box 3 to restrict the secondary air (a), thereby the flame is elongated and a hot oxidation can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a burner device used in an indoor supply/exhaust type gas hot air heater.

Configuration of conventional example and its problems In the past, as shown in Fig. 1, a simple Bunsen burner 2,
It is used as a burner device for indoor air supply and exhaust type gas hot air heaters, and the NOx value in the exhaust gas is approximately 11.
It was about 00PP.

2.

In recent years, there has been a desire to keep NOx in exhaust gas as low as possible due to its impact on the human body, and low NOx
It has been desired to develop a device for calculating the X value.

Purpose of the Invention The present invention supplies a smaller amount of secondary air required for combustion than a normal Bunsen burner, increases the flame length, and achieves high-temperature combustion in order to reduce the amount of Nox in exhaust gas that is harmful to health. The purpose of the present invention is to provide a device for preventing and reducing NOx values.

Structure of the Invention In order to achieve the above-mentioned object, the burner device of the present invention is provided with a rectangular box for suppressing the amount of secondary air in the Bunsen burner, with the top of the box open and the bottom aligned with the combustion surface of the Bunsen burner. It has an opening, a partial notch is provided in the opening, a frame rod is provided at one longitudinal end for flame detection, and a secondary air intake is provided parallel to the opening. Bunsen Burner No.
The x value can be lowered.

37] Description of Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings.

FIG. 2 is a perspective view of the low Nox bar of the present invention.

1 is a nozzle that supplies gas, 2 is a bunsen bar, 3 is a rectangular box that suppresses the amount of secondary air for combustion, and 4 is a box 3
A flame rod for combustion detection is provided on the box body 3, and 6 indicates an ignition electrode that is provided on the box body 3 and generates a high-pressure spark for ignition.

Further, numeral 6 denotes a partition plate that divides the box interior 3 into two parts: an ignition electrode part for ignition and a flame rod part for combustion detection, and a notch 6a for fire transfer is provided in the center part. There is.

The part 3b of the upper opening 3a of the ignition electrode 50 box body 3 divided by the partition plate 6 has a smaller opening area than the combustion detection frameron 14, so that the mixed gas accumulates during ignition and ignites quickly. The other flame rod 4 for combustion detection has a shape in which the upper opening 3a is shaped like a dog, making it difficult for the mixed gas to accumulate and preventing explosion and ignition due to delayed flame transfer.

FIG. 3 is a sectional view taken along the line x-x' in FIG. 2. This figure shows that a controlled air intake lower for suppressing the secondary air necessary for combustion is constructed at the bottom of box 3, and shows the flow of secondary air a and exhaust gas b. be. As shown in this figure, by suppressing the secondary air a, the flame becomes longer and high-temperature oxidation is prevented.

Fig. 4 is a bottom view of the box 3, showing that one dimension of the burner insertion port 3c is the fitting dimension with the burner hole 2a, and a notch 3d having the L dimension of the burner insertion port 3c. It directly supplies secondary air to the flame hole 2a to form a Bunsen flame, and plays the role of having a flame-holding effect to prevent the entire flame from burning. It is especially effective when the indoor air is low.

FIG. 5 is a sectional view taken along line YY' in FIG. 2 and shows the relative positional relationship of the frame rod 4, the ignition electrode 6, and the partition plate 6.

FIG. 6 shows a gas hot air heater 8 using the above-mentioned heating device. Because the heater is open to the room, the combustion exhaust gas is blown out from the grill 9 and circulated in the room, so it is extremely effective to implement this type of heater.

Effects of the invention By suppressing the secondary air necessary for combustion and reducing high-temperature oxidation, we achieve low NOx, and by dividing the combustion box into two sections with a partition plate, ignition is ensured. Make it like that. In addition, the suppressed amount of secondary air in the combustion box is partially released to achieve complete Bunsen combustion, and a flame holding effect is achieved by stably burning the flame on the burner surface. As a result, even when indoor air is low, the flame burns stably, making it effective as a burner device for indoor air supply/exhaust type gas hot-air heaters that is less likely to generate harmful carbon monoxide.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a conventional Bunsen burner, Fig. 2 is an external perspective view of a burner device according to an embodiment of the present invention, and Fig. 3 is an external perspective view of a conventional Bunsen burner.
The figure is a cross-sectional view taken along the line xx' in Figure 2, Figure 4 is a bottom view of the combustion box of the same device, Figure 5 is a cross-sectional view taken along the line Y-Y' in Figure 2, and Figure 6 is the same. It is an external perspective view of a gas hot air heater using the device. 2...Bunsen bar, 2a...marked bar flame hole,
3...Box body, 3a, 3b...Top opening, 3c
...Bass insertion port, 3d...Notch, 6.
...Partition plate, 7...Air intake. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] a Bunsen burner; A burner device comprising a flame rod and an ignition electrode, the burner insertion opening provided at the bottom of the box body having a partial cutout.