JPS62142914A - Gas burner of surface combustion type - Google Patents

Abstract

PURPOSE:To prevent generation of CO gas in the case of oxygen shortage and also when a primary air opening is clogged by providing a secondary air opening at a metal net flame opening section and a burner frame for fixing a glass plate. CONSTITUTION:A glass plate 5 opposite to a metal net flame opening section 4 of a burner section which consists of a primary air hole 1, throat section 2, mixture air chamber 3, flat metal net flame opening section 4 is fixed by the left burner frame 6, right burner frame 7 and lower burner frame 8, and openings 9 for secondary air are also provided for the burner frames 6, 7, and 8. During stationary combustion the burner provides total primary surface combustion using the air drawn as a primary air, and the air flow from the opening 9 for the secondary air induced by the draught becomes by-pass air, but during oxygen shortage or when the primary air opening 1 is clogged and the primary air becomes short, the air flow from the secondary air opening sections 9 becomes the secondary air to achieve complete combustion.

Description

[Detailed description of the invention] Industrial applications The present invention relates to improvements in radiant burners for household heating appliances.

2. Description of the Related Art Conventionally, radiant burners for household heating appliances include schwank burners that use ceramic plates as flame ports, and metallic burners that use wire mesh as flame ports.

Since the burner has a ceramic flame mouth, it has the disadvantage that it takes time for combustion to start up.

There are cases where metallic burners are used to improve the above drawbacks.

FIG. 2 shows a conventionally used metal link bar. In the figure, 4 is the flame opening of the wire mesh, 5 is the glass plate located in front of it, 6 is the left side of the burner frame, 7 is the right side of the burner frame, and 8 is the bottom of the nozzle frame. The metallic burner is all-primary surface combustion in order to achieve cleaner combustion gas, especially as a means of achieving low NOx, and has flame holes to increase radiation efficiency and improve flame stability due to outside air flow. A glass plate 5 is provided opposite the burner frame 4, and the burner frame 4 and the glass plate 5 are fixed by the burner frame left 6, right 7, and above 8, and the burner frame 6.7.8 is connected to the inflow of secondary air. It was designed so that there were no openings to prevent this.

Problems that the invention aims to solve In recent years, burners for heating equipment have been viewed as a problem.As the confidentiality of houses has increased, oxygen concentrations have become more likely to occur, so it is difficult to generate CO, etc. even at low oxygen temperatures. It's not good,
Furthermore, even if the primary air port is blocked after long-term use, CO
etc. may not occur.

The present invention is intended to solve the above-mentioned problem, and is to enable stable combustion even if there is a lack of oxygen or if there is a mistake in the secondary air port.

Means for Solving the Problems The present invention is directed to an all-primary surface combustion burner, in which two parts are provided on the burner frame, facing between the wire mesh flame hole and the heat-resistant heat transmitting material in front thereof.
It is equipped with an air vent.

Effect According to the above means, under normal conditions, all primary surface combustion is performed with almost no supply of secondary air, but in the event of oxygen deficiency or an error in the primary air port, the shortage of primary air is It is supplied from the secondary air port for stable combustion.

Embodiment The burner section consists of a primary air port 1, a throat section 2, a mixed air chamber 3, and a flat wire mesh flame port 4. A glass plate 5 is attached to the burner frame on the left 6, on the right 7, facing the wire mesh flame port 4. 8, and the burner frame 6.7.8 is provided with a secondary air opening 9, and the distance between the wire mesh burner port 4 and the glass plate 5 is the same as that of the conventional burner frame 6.7.8. It is a short comb compared to 1' of the metal link burner.

Primary air is sucked in from the primary air port 1 by gas ejected from a glass nozzle (not shown), mixed with glass and air in the throat part 2 and the air mixture chamber 3, and then heated to the surface by the wire mesh flame port part 4. Although it burns, this air-fuel mixture has a structure that makes it easy to suck in primary air so that it has a stoichiometric air ratio or higher. A glass plate 5 is fixed to the burner frame on the left side 6, on the lower right side 7, and on the upper side 8, facing the wire mesh flame port part 4. Burner frame left 6, same right 7,
The same as above 8 has a secondary air opening 9 facing the space between the wire mesh flame port 4 and the glass plate 5.

During steady combustion, all primary surface combustion is performed by the air sucked in as primary air, and the airflow from the secondary air opening 9 flowing by draft becomes bypass air. When there is a lack of oxygen or when primary air port 1 is clogged, there is a shortage of primary air, but 2
The airflow from the secondary air port 9 becomes secondary air and complete combustion is achieved.

Effects of the invention This invention is like this! /'12th air lo? Since it is provided in the burner frame that fixes the wire mesh flame bottom part and the glass plate, it is possible to provide a burner with a combustion margin that is difficult to generate Co even when there is oxygen deficiency or when the primary air port is clogged. Since the distance between the wire mesh burner port and the glass plate is set shorter than that of conventional metal link burners, a secondary air port is provided in the burner frame, and even if the airflow flows as bypass air due to draft, the radiation efficiency is almost reduced. Never 0

[Brief explanation of drawings]

Figure 1 shows a surface combustion type using the wire mesh of the present invention as a flame outlet. A perspective view of a gas burner, FIG. 2 is a perspective view z-hB of a conventional metal link burner that performs all primary surface combustion. 4...flame opening of wire mesh, 5...glass plate (heat-resistant heat transmitting material), 6.7.8...burner frame left, burner frame right, burner Frame work (burner frame), 9...
...Secondary air vent. Name of agent: Patent attorney Toshio Nakao and 1 other person 4-
Flame outlet part 9-2 No. 11 - Mouth Figure 2

Claims (1)

[Claims] A surface combustion type gas burner in which a flame hole is formed of a wire mesh, a heat-resistant heat transmitting material is provided on a burner frame corresponding to the flame hole, and a secondary air port is provided on the burner frame.