JPS61147011A - Burning equipment - Google Patents

Abstract

PURPOSE:To prevent deformation of a burner case due to its expansion and also its contraction at the respective time of heating and cooling by a method wherein a burner case is molded in a form of around U-shaped and splited in cylindrical type, and underneath the burner case a plurality of beads are provided. CONSTITUTION:A gas ejected from a nozzle 19, is mixed up with a primary air, passing through a damper 17, and at a throat unit 16, where the surrounding air is sucked by an ejector effect, and this gas mixture are homoginized by passing through a baffle 21 so as to obtain a uniform temperature distribution as well as a uniformed gas concentration at the flame surface. Further, by providing a plurality of beads, its modulus of section has been increased, thereby deflection and thermal strain due to a repeated heating and cooling in a X-Y direction are reduced, which give an effect on prevention of deformation for the burner case 11.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to combustion devices such as gas stoves and gas mFRKm machines, and particularly to the structure of burners for burning gas.

2. Prior Art Conventionally, in this type of combustion apparatus, the conventional 'm' shown in FIG.
As shown in the cross-sectional view of the burner of the burner and the perspective view in FIG. 1 is mainly composed of a left side plate 4 and a right side plate 5 opposite thereto, and has a throat portion 6 for sucking primary air with gas. A lath mesh plate 7, a punching plate 8, and a packing 9 for making the gas concentration distribution in the burner body 1 uniform are supported by the left side plate 5, and are crimped together with the flame hole plate 2 by the frame 3 from above. ing. Furthermore, around the burner body 1, the outer edge of the left side plate 4 is connected to the right side plate 5.
The outer edge 5a was covered and the periphery was caulked.

Problems to be Solved by the Invention However, in the above configuration, the throat aIS6
When the air-fuel mixture obtained by sucking and mixing primary air with gas is burned on the flame hole plate 2 and the burner body 1 is heated,
Since the wire mesh forming the flame hole plate 2 and the lath mesh plate 7 and punching plate 8 formed below it have different shapes, materials, etc., they do not rise with the same temperature distribution, and the heat transfer is affected. Each of them was heating up 1II11i, with some deviations. Furthermore, even when the burner stops combustion and the burner body 1 cools down, a temperature difference tends to occur at the contact surfaces of the wire mesh of the flame hole plate 2, the lath mesh plate 7, and the punching plate 8, and the burner body 1 It had the disadvantage of causing deformation.

The present invention solves these conventional problems, and aims to provide a combustion device that can prevent thermal expansion and contraction from occurring in the burner and prevent deformation of the burner body. That is.

Means for Solving the Problems In order to solve the above-mentioned problems, the combustion device of the present invention includes a burner case that is formed into a split cylinder shape with a substantially U-shaped cross section and has an open top surface, and a burner case that is installed in the opening. The burner frame includes a flame hole wire mesh, a burner case lid having an opening corresponding to the opening, a gasket, and a burner frame for caulking the flame hole wire mesh, burner case lid, and gasket to the upper end flange of the burner case,
The burner case has a lower part extending from the gas suction part to the burner tip, and is composed of a tapered throat part that becomes shallower toward the tip, a tapered part that becomes deeper toward the tip, and a flat part that follows this. In addition, the flat portion has a plurality of beads provided in a direction perpendicular to the longitudinal direction.

Effects According to the above configuration, the plurality of beads increases the strength of the burner case in a direction intersecting with the longitudinal direction, thereby reducing thermal distortion due to heating and cooling of the burner body.

EXAMPLE Hereinafter, an example of the present invention will be described based on the drawings. FIGS. 2 and 3 show a general schematic diagram and a sectional front view thereof. Reference numeral 11 denotes a burner case, which is molded into a divided tube shape with a substantially U-shaped cross section, and has an open upper surface and a plurality of beads 11a extending in a direction perpendicular to the longitudinal direction at the lower part. Reference numeral 12 denotes a substantially planar burner flame hole wire mesh having a number of stages in the opening, and reference numeral 13 denotes a metal mesh having an elongated opening corresponding to the opening. The burner case lid 14 is made of a flat plate made of aluminum, and the flame hole wire mesh 12
, the burner case lid 13, and the gasket 14 are caulked from above to the upper end flange portion 11b of the burner case 11 by a burner frame 15.

FIG. 1 shows a cross-sectional side view of FIG. 2, and a throat portion 16 is formed on the nozzle side by a burner case 11 and a burner frame 15, and is configured so that gas is easily sucked through a damper 17. . 18 is the burner and nozzle 19?7
It is a bar J receiving plate for attaching the bar J and is fixed to the burner case 11 and the burner frame 15. The shape of the lower part of the burner case 11 is formed in a tapered shape that becomes shallower from the gas suction part 20 near the damper 17 toward the burner tip, and after the throat part 16 is provided, the taper becomes deeper toward the burner tip. It is formed into a shape, and then formed into a flat surface having a bead 11a, and has a shape that reaches the tip of the burner case. Reference numeral 21 denotes a baffle provided on the flat surface of the burner case 11 so that the sucked gas and primary air are evenly mixed and burned uniformly in the burner flame hole wire gauze 12. 22 is an ignition electrode insulator;
23 is an ignition electrode, and 24 is a primary combustion chamber.

In the combustion device configured in this way, the gas ejected from the nozzle 19 is mixed with the primary air obtained by suctioning the surrounding air through the damper 11 by the ejector effect of the throat part 16, and this mixture is Baffle 21 is installed so that there is a uniform temperature distribution and uniform gas concentration on the flame hole surface.
It is equalized by Furthermore, the plurality of beads increases the section modulus of the cross section, reduces thermal distortion caused by heating and cooling in the X-Y direction shown in FIG. 3, and prevents deformation of the burner case.

Effects of the Invention As described above, according to the present invention, the burner case is molded into a substantially U-shaped divided tube shape, and a plurality of beads are provided on the upper part of the burner case, so that thermal expansion and contraction during heating and cooling are reduced. This prevents deformation of the burner case, and also prevents the squeaking noise that occurs during heating and cooling.

[Brief explanation of drawings]

Fig. 1 is a sectional side view showing an embodiment of the present invention, Fig. 2 is a schematic diagram of the whole, Fig. 3 is a sectional front view thereof, Fig. 4 is a sectional front view showing a conventional example, and Fig. 5 is a sectional side view showing an embodiment of the present invention. FIG.

Claims (1)

[Claims] 1. A burner case molded into a split cylinder shape with a substantially U-shaped cross section and having an open top surface, and a flame hole wire mesh installed in the opening;
The burner case includes a burner case lid having an opening corresponding to the opening, a packing, and a burner frame in which the flame hole wire mesh, the burner case lid, and the packing are caulked to the upper end flange of the burner case. From the suction part to the burner tip, it consists of a tapered throat part that becomes shallower toward the tip, followed by a tapered part that becomes deeper toward the tip, and a flat part that follows this. A combustion device having a plurality of beads arranged in a direction that intersects with the opposite direction.