JPS6030570Y2 - Pottuvana - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pot burner for generating hot air used in grain dryers and the like, and particularly relates to improving combustion in the combustion section.

This type of pot burner consists of a primary air supply part and a combustion part, and the combustion part has a funnel-shaped evaporation dish in the center of the combustion dish, and a grilled ball with a triangular cross section is placed close to the evaporation dish. The fuel oil supplied to the evaporating dish is heated and evaporated by a baking ball and is jetted into the combustion dish, where it is mixed with primary air introduced by a secondary air supply section and combusted. There is.

Incidentally, in the conventional combustion dish, the bottom on the side of the primary air supply section is angular in an L-shape, and air stagnates at the corner with almost no flow.

In addition, the top of the induction cylinder side of the baked ball is flat, and there is very little air flow here, so incomplete combustion occurs due to lack of air at the corners of the bottom of the combustion dish and the top of the baked ball. , and there was a problem of carbon adhesion.

Furthermore, the evaporation of fuel oil is carried out only by the evaporating dish and the baking ball, and there is a limit to its evaporating capacity. will fall downward without being combusted, making it difficult to increase the amount of combustion beyond a certain level.

The present invention was made to solve these problems, and the combustion dish is formed into a bowl shape that follows the outer shape of the evaporation dish, and the top of the baked ball is formed into a mountain shape to eliminate the air-deficient part. ,
Furthermore, ribs are provided on the inner surface of the combustion dish, so that when the fuel oil overflows from the evaporation dish, it is diffused to promote evaporation and burn, increasing combustion efficiency and reducing carbon adhesion, reducing the amount of combustion. This provides a pot burner that makes it possible to increase the amount of water.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. In the drawings, reference numeral 1 is a suction duct installed horizontally in front of a drying section of a grain dryer, etc., and the inside of this suction duct 1 is A pot burner 2 according to the present invention is installed at the bottom of the pot burner 2, and a combustion cylinder 3 for sucking secondary air and further combusting the combustion gas from the pot burner 2 is installed horizontally at approximately the center of the duct above the pot burner 2. The combustion gas discharged from the combustion tube 3 is mixed with the air taken in by the suction duct 1 to generate hot air.

The pot burner 2 has a primary air supply section 4 at its lower part, and a combustion section 5 connected thereto.

- In the primary air supply section 4, a motor 8 for supplying primary air is mounted on a mounting base 6 placed on the inner surface of the suction duct 1 by means of a support frame 7, with an output shaft 9 protruding upward. The sirocco fan 10 is fixed to supply an amount of primary air corresponding to the amount of combustion.

A partition plate 11 is provided at the bottom of the fan 10, which opens only the part immediately below the partition plate 11. A cylinder 12 is connected to the upper part of the mounting base 6 on the partition plate 11, and the partition plate 11 and the cylinder body are connected to each other. 12 to form a primary air chamber 13.

The combustion section 5 is provided with an igniter 14 directly above the sirocco fan 10 inside the cylindrical body 12, and an ignition wick 15 impregnated with fuel oil, a heater for ignition, etc. are accommodated and installed inside the igniter 14. A combustion dish 16 is further mounted on the cylinder body 12, a combustion dish 16 is further mounted on the combustion dish 16, and a guide pipe 17 for guiding combustion gas to the combustion pipe 3 is fitted on the combustion dish 16. ing.

Further, a mounting bracket 18 is provided at the lower center of the combustion dish 16, and the fuel oil passage 1 is attached to this bracket 18.
A screw tube 20 having a diameter of 9 is erected, and is screwed onto the screw tube 20 and fixed to the bracket 18, while a funnel-shaped evaporation tray 21 is provided approximately at the center of the lower half of the combustion tray 16.

The fuel oil passage 19 communicates with the inside of the evaporating dish 21 to supply fuel oil, and is further screwed onto the screw tube 20 so that a baked ball 22 is placed close to the top of the evaporating dish 21. A primary combustion chamber 23 is formed between the evaporation plate 21 and the baked balls 22 inside the combustion plate 16.

In such a configuration, the combustion dish 16 further includes a dish part 16b provided inside the outer cylindrical part 16a, and is attached to the cylinder body 12 by the cylindrical part 16a.

The pan portion 16b communicates with the primary air chamber 13 inside the cylindrical body 12 through an opening 24 having a smaller diameter than the maximum opening diameter of the evaporation pan 21 at the lower end, and is formed into a bowl shape that follows the outer shape of the funnel-shaped evaporation pan 21. The passage gaps in the primary combustion chamber 23 are made substantially uniform.

A partition plate 27 is provided below the combustion dish 16 and has only a portion corresponding to the opening 24 opened.
This prevents air from entering between the plate part 16b and the plate part 16b, and a large number of long ribs 25 and short ribs 25 are arranged radially on the inner surface of the plate part 16b.

In addition, we focused on the fact that the guide tube 17 has a small-diameter combustion gas discharge port 26 at the upper end of the aperture so as to cover the baked ball 22. The path gap with the top portion 22a is also made substantially uniform.

Note that the reference numeral 28 is an overflow tank. Since the present invention is constructed in this way, when the ignition wick 15 of the igniter 14 is first ignited with a heater or the like during engine operation, the evaporating plate 21 and the baked ball 22 are preheated by the combustion flame, and the evaporating plate 21 and the baked ball 22 are preheated. plate 21
The fuel oil supplied to the combustion chamber 16 evaporates and vaporizes to
It erupts into the inside of 6b, and the flame spreads to it and ignites it.

Then, the evaporating dish 21 and the baked ball 22 are further heated to promote the evaporation of the fuel oil and to continue combustion, and at this time, the motor 8 rotates the fan 1o to convert the primary air into The gas is sucked into the chamber 13 and further introduced into the dish portion 16b of the combustion dish 16 through the opening 24, where it is completely combusted.

Incidentally, the dish portion 16b of the combustion dish 16 is formed into a bowl shape, so that the passage gap in the primary combustion chamber 23 is approximately uniform, and the passage gap between the guide tube 17 and the top portion 22a of the baked ball is also approximately uniform. Since the air flows smoothly through these areas without stagnation, complete combustion occurs in these areas without air shortage, and this combustion gas flows through the discharge port 2 of the induction tube 17.
6, it is discharged and enters the combustion cylinder side.

On the other hand, if a portion of the fuel oil overflows from the evaporating dish 21 by increasing the supply amount of fuel oil and falls directly into the combustion dish 16, the inner surface of the dish part of the combustion dish 16 is provided with ribs 25 and unevenness. Since the fuel oil is formed and has a large surface area, the fuel oil is easily diffused and evaporated by the ribs 25, and most of the fuel oil that overflows from the evaporating dish 21 is also combusted within the combustion dish 16.

As described above, according to the present invention, the inside of the combustion dish 16 and the fried balls 22
Because complete combustion occurs at the top of the tank without air shortage,
Combustion efficiency is improved and problems caused by carbon adhesion are eliminated.

In addition, the fuel oil overflowing from the evaporating dish 21 is also transferred to the combustion dish 1.
6, it evaporates and burns there, making it possible to increase the amount of combustion beyond a certain level.

BRIEF DESCRIPTION OF THE DRAWINGS The drawing is a sectional view showing an embodiment of the present invention. 2... Pot burner, 4... Secondary air supply section, 5... Combustion section, 16... Combustion plate, 17... Induction tube, 21... Evaporation dish, 22... Baked egg, 25... Rib.

Claims (1)

[Scope of utility model registration request] The combustion part consists of a primary air supply part and a combustion part, and the combustion part has an induction tube fitted into a combustion dish, and a funnel-shaped evaporation dish is housed in the center of the combustion dish, and a triangular cross section is placed above the evaporation dish. shaped grilled balls are arranged close to each other, and the fuel oil supplied to the evaporating dish is heated and evaporated by the fired balls and the fuel oil is ejected into the combustion dish, and the primary air is introduced into the combustion dish by the secondary air supply section. In a pot burner configured to mix and burn, the combustion dish is formed in a bowl shape along the outer shape of the combustion dish, and a large number of ribs are provided radially on the inner surface of the combustion dish,
A pot burner characterized in that the guide cylinder side of the baked ball is formed to bulge in a mountain shape.