JPS6325408A - Burner - Google Patents

Abstract

PURPOSE:To eliminate the deformation and damage of a burner head, to facilitate the maintenance of the burner such as attachment and detachment of a burner lid, and to remove poor combustion of the burner such as back fire and the like by fitting doughnut-shaped reinforcing metal fittings on the inside peripheral walls as the upper parts of burner ports 20 of a burner head. CONSTITUTION:In the burner, reinforcing metal fittings 24 are fitted in the inside peripheral wall at the upper parts of burner ports 20 of a burner head 19. A secondary flame which has reacted with secondary air around the circumference of a burner head 19 assumes such a shape that it is curved around and above the upper part of a burner lid 21 because of a circulation region formed at a downstream zone at the upper part of the burner lid 21, and the upper part of the burner head 19 and the burner lid 21 are heated to considerably high temperatures. However, since the reinforcing metal fittings 24 are constantly exposed to a mixed gas having a low temperature within the burner head 19, they hold a mechanical strength. The upper parts of burner ports 20 utmostly weakened in the burner head 19 can be prevented from being deformed and damaged due to irregularity in temperatures at the upper part of the burner head 19 which is generated by the non-uniformity of secondary flame due to non-uniformity of secondary air.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to combustion devices using liquid fuel, such as oil hot air heaters.

2. Description of the Related Art A combustion device used in a conventional oil hot air heater or the like is constructed as shown in FIG. That is, in Fig. 3, 1 is a cylindrical burner head with a bottom, 2 is a cylindrical burner head attached to the opening of the vaporizer cylinder 1, and a throat part is attached at the bottom. 3, and a flame port 4 is provided in the solid wall.It is a burner lid that covers a part of the burner head 2 described in page 5, and there is a cutout located below it.
At the same time, it is attached to the pernahend 2 via the tightening part 6.

The operation of the combustion apparatus configured as described above will be explained below.

Immediately, the mixed gas vaporized and premixed in the vaporization cylinder 1 flows into the burner head 2 through the throat part 3 provided on one side of the vaporization cylinder 1. Here, 1- of burner head 2.

Since the burner head 2 is tightly covered with a burner lid 5 via a tightening part 6, the mixed gas is ejected from the flame port 4 provided on the peripheral wall of the burner head 2, forming a flame.

Problems to be Solved by the Invention However, in the above conventional AR configuration, three...
- Even though the flame is shaped 1y outside the burner head 2 in the nj-1 direction, the downstream area above the burner lid 5 forms a circulation area, and the 2 around the burner head 2
The secondary flame that has reacted with the secondary air takes the form of being engulfed above the burner lid 5. For this reason, burner head 2
The upper part of the burner and the burner lid 5 become quite hot. As a result, the heat resistance of the burner head 2, which is the weakest in terms of strength, occurs in the two parts of the burner head 2. Temperature variations in the upper part of the burner head 2 occur due to unevenness in the secondary flame due to unevenness in the secondary air around the burner head 2, causing deformation and damage to the burner head 2. . Deformation or damage to a portion of the burner head 2 not only makes it difficult to attach and remove the burner lid 5, but also causes combustion defects such as backfire due to the contact with the burner lid 5 caused by the deformation and damage.

The present invention solves the above-mentioned drawbacks of the conventional technology, and eliminates deformation and damage of the burner head, facilitates maintenance such as attaching and detaching the burner lid, and eliminates combustion defects such as backfire. In order to achieve this objective, the combustion apparatus of the present invention has a donut-shaped reinforcing metal fitting fitted to the internal solid wall above the flame port of the burner head.

Function According to the present invention, the strength of the upper part of the burner head is maintained by the donut-shaped reinforcing metal fitting, which is constantly exposed to low-temperature mixed gas and poses no problem in terms of strength. Therefore, the upper part of the burner head will not be deformed or damaged, making maintenance such as attaching and detaching the burner lid easier, and preventing combustion defects such as backfire.

EXAMPLE Hereinafter, an example of the present invention will be explained with reference to the drawings. In FIGS. 1 and 2, 11 is a bottomed cylindrical vaporization cylinder with two open parts, 12 is a sheathed heater embedded in this vaporization cylinder 11, and 13 is two parts 5 and 11. This air passage supplies combustion air to the air blower 14, and communicates with the blower 14. A fuel pipe 15 supplies fuel to the carburetor cylinder 11, and is connected to the fuel tank 1 via a pump 16.
It is connected to 7. 18 is a burner case that surrounds the outer cylinder of the vaporizing cylinder 11; 19 is a burner head that covers a part of the opening of the vaporizing cylinder 11; a small-diameter throat portion 19a is provided at the bottom;
It is formed into a cylindrical shape with a cylindrical shape, and a plurality of flame ports 20 are formed in the wall portion 19b. Reference numeral 21 denotes a burner lid that is attached to cover the upper part of the burner head 19, and is closely fixed to the two-part burner head 19 via a tightening portion 22. 23 is a heat insulating lid disposed below the two-part napa lid 21, and is fixed to the burner head 19 together with the burna lid 21 via a tightening portion 22. 24 is a donut-shaped reinforcing metal fitting fitted to the inner circumferential wall of the burner head 19, and is an L-shaped aperture ring with a cross section that is approximately the same as the inner diameter of the burner head. This reinforcing metal fitting 24 is an inner metal mesh 6 for preventing backfire, which is attached to the inner surface of the +Ml wall of the two-part burner head 19 and spot welded.

mj is placed on the upper edge of 25, and by placing it with ``-
The reinforcing metal fitting 24 is supported on one side of the flame port 20 of the burner head 19. In addition, 26 in the figure is burner head 1
This is an outer wire mesh attached to the outer periphery of the solid wall of No.9.

The operation of the combustion device configured as described above will be explained below.

First, the sheathed heater 12 is energized, and when the temperature of the vaporizer cylinder 11 rises to a certain setting ti, fuel is supplied from the fuel pipe 15 into the vaporizer cylinder 11 by the pump 16, and at the same time, the blower 14 passes through the air passage 13 and burns the fuel. air is sent. ”-The fuel is vaporized in the vaporization cylinder 11, mixed with combustion air, and passed through the met portion 19a to the burner head 19.
flow inside.

This mixed gas flows through the burner head 19 into the tightening part 2.
Since the burner head 190 is covered and sealed by the burner lid 21 and the heat insulation lid 23 via the burner head 190, a flame is ejected from the flame port 20 provided in the solid wall of the burner head 190 to form a flame.

Here, in this combustion apparatus, the reinforcing metal fitting 24 is fitted to the inner circumferential wall of the second part of the burner head 19 by 1M, so that the following effects can be obtained. In other words, the secondary flame that has reacted with the secondary air around the burner head 19 is drawn into the second part of the burner lid 21 in the circulation region formed in the area downstream of the second part of the burner lid 21. The upper part of the burner head 19 and the burner lid 21 become extremely hot. However, the reinforcing metal fitting 24 maintains its mechanical strength because it is constantly exposed to the low-temperature mixed gas inside the burner head 19. The temperature of the second part of the burner head 19 occurs due to distortion, material unevenness, circumferential flame variation, non-uniformity of the secondary flame due to non-uniformity of the secondary air around the burner head 19, etc. It can prevent deformation and damage due to variations. Therefore, the burner lid 21 can be easily attached and detached, maintenance efficiency is improved, and the burner head 19
By maintaining the adhesion between the burner lid 21 and the burner lid 21, fP firing defects such as backfire can be prevented.

Still, this reinforcing metal fitting is placed on the two ends of the inner metal mesh 25 for preventing backfire, and is supported above the burner port 20 of the burner head 19, so no special supporting means is required. Sustainable and economical.

According to the present invention, as is clear from the description of the two embodiments,
It is a highly safe and durable combustion device that can prevent deformation and damage to the burner head flame opening, has excellent maintainability such as attaching and detaching the burner lid, and has no combustion defects such as backfire. can do.

[Brief explanation of the drawing]

FIG. 1 is an enlarged sectional view showing the main parts of a combustion device according to an embodiment of the present invention, FIG. 2 is a sectional view showing the entire combustion device, and FIG. 3 is a sectional view of the combustion device in a conventional configuration. be. 11-...Carburizer cylinder, 19...Burner head, 208
,...flame mouth, 21...barna lid, 22...M
Material parts 1, 24: Reinforcement fittings.

Claims (2)

[Claims] (1) A vaporizer cylinder having an opening, a cylindrical burner head attached above the opening of the vaporizer cylinder, a flame port provided on the peripheral wall of the burner head, and a burner head that covers the upper part of the burner head. A combustion device comprising: a burner lid attached to the burner head; and a tightening portion for fixing the burner lid in close contact with the burner head; and a donut-shaped reinforcing metal fitting fitted to the inner circumferential wall above the flame opening of the burner head. (2) The combustion device according to claim 1, wherein the reinforcing metal fitting is supported by being placed on the upper edge of a wire mesh attached to the inner surface of the peripheral wall of the burner head.