JP2626094B2 - Oil burning equipment and its primary air ring - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to the uniform introduction of primary air and the setting of primary air in petroleum gasification type combustion devices.

2. Description of the Related Art As shown in FIG.
Is divided by a vaporizer base 2 and a partition plate 3 to form a vaporized air chamber 4, a primary air chamber 5, and a secondary air chamber 6.
Primary air vents 7 opened to the left and right inside the carburetor base 2
The chambers 4 to 6 communicate with each other through the secondary air vent 8 opened in the partition plate 3. Further, the vaporizer 10 is provided on the vaporizer base 2 side by side so as to cover the vaporized air inlet 9. The primary air inlet 11 is opened on the left and right sides of the partition plate 3, the two mixing chambers 12 arranged side by side are provided in the secondary air chamber 6, and the mixing chamber inlet 13 faces the primary air inlet 11. The burner head 14 is provided at the upper end of the mixing chamber 12.
A combustion fan 15 is connected to the vaporized air chamber 4.

In the above configuration, the air sent from the combustion fan 15 passes through the vaporizing air inlet 9 through the carburetor 10 and enters the mixing chamber 12, and the primary air vent 7 passes through the primary air chamber 5, and further passes through the primary air inlet 5. Primary air entering the mixing chamber 12 from 11;
Burner head from secondary air vent 8 through secondary air chamber 6
It is divided into three systems with secondary air entering 14. The vaporized gas generated in the vaporizer 10 entered the mixing chamber 12, was mixed with the vaporized air and the primary air, became a premixed gas, burned in the burner head 14, and further promoted the combustion by the secondary air.

Problems to be Solved by the Invention However, in the above configuration, since the primary air vent 7 is opened to the left and right inside the carburetor base 2,
The primary air flowed very unevenly into the mixing chamber inlet 13. Therefore, there is a problem that the mixing of the vaporized gas and the primary air becomes uneven. In addition, since the primary air radially flows into the mixing chamber inlet portion 13 (entering while changing directions from the left and right sides), there is a problem that mixing characteristics are poor. Therefore, the combustion characteristics became very poor. On the other hand, since the amount of primary air is set by the passage resistance of the gap between the carburetor base 2 and the carburetor 10, there is a problem that the amount of primary air fluctuates greatly due to an assembly error.

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems, and has as its first object to make the mixing of gas and air uniform and to stably set the amount of primary air.

A second object is to obtain a primary air ring with improved mixing characteristics.

Means for Solving the Problems In order to achieve the first object, the present invention provides a vaporized air chamber, a primary air chamber, and a secondary air chamber in which a main body is sequentially formed from below by a carburetor base and a partition plate. When,
A primary air vent opening to the vaporizer base, a vaporized air inlet, a vaporizer provided in the primary air chamber, a secondary air vent opening to the partition plate, a primary air inlet, and a primary air inlet. A mixing chamber provided in the secondary air chamber forming a mixing chamber inlet portion facing the primary air chamber, a burner head provided at an upper end of the mixing chamber, and a mixing chamber inlet portion and an outlet of a vaporizer. A primary air ring provided in a gap between the vaporizer and the partition plate, and a plurality of primary air rectifying holes that are opened in the primary air ring so as to face the outer peripheral surface of the mixing chamber inlet portion. is there.

In order to achieve the second object, the present invention has a primary air ring in which a diagonal primary air rectifying hole is opened in a substantially horizontal direction and in the same oblique direction.

According to the present invention, since the primary air passes through the primary air rectification hole and collides with the outer peripheral surface of the mixing chamber inlet, the present invention rectifies the primary air in the primary air ring and uniformly flows into the mixing chamber inlet. . Therefore, since the mixing of the primary air and the vaporized gas becomes uniform, the combustion characteristics are improved. On the other hand, since the primary air amount is set by the opening area of the primary air rectification hole, the primary air amount can be set stably.

Further, the primary air that has passed through the mixed flow primary air rectification hole forms a swirling flow in the primary air ring and is rectified, so that it flows into the mixing chamber inlet more uniformly. In addition, the swirled primary air is highly turbulent, which promotes mixing.
Therefore, the combustion characteristics are greatly improved.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In FIGS. 1 and 2, reference numeral 16 denotes a box-shaped main body.
A vaporized air chamber 19, a primary air chamber 20 and a secondary air chamber 21 are sequentially partitioned from below by a vaporizer base 17 and a partition plate 18. Reference numeral 22 denotes a primary air vent, which opens to the left and right of the vaporizer base 17, and reference numeral 23 denotes a vaporized air inlet, which opens inside the primary air vent 22 to the left and right of the vaporizer base 17. 24 is a vaporizer arranged on the left and right of the vaporizer base 17,
It is provided in the primary air chamber 20 so as to cover the vaporized air chamber inlet 23. Reference numeral 25 denotes a secondary air vent, which opens before and after the partition plate 18, and reference numeral 26 denotes a primary air inlet, which is opened in the partition plate 18 facing the outlet of the vaporizer 24. Reference numeral 27 denotes a mixing chamber provided side by side in the main body 16, and a primary air chamber 26 is provided through a primary air inlet 26.
A mixing chamber entrance portion 28 facing 20 is formed in the secondary air chamber 21. A burner head 29 is provided at the upper end of the mixing chamber 27. Reference numeral 30 denotes a middle cylindrical primary air ring which surrounds the inlet 28 of the mixing chamber and the outlet 31 of the vaporizer, and is provided in the gap between the partition plate 18 and the vaporizer 24. Reference numeral 32 denotes a primary air rectifying hole, which is opened in a large number on the primary air ring 30 and facing the outer peripheral surface of the mixing chamber inlet portion 28. 33 is a combustion fan,
It is communicated with the vaporized air chamber 19.

In the above configuration, of the air sent from the combustion fan 33, the vaporized air flowing into the vaporizer 24 from the vaporized air inlet 23 conveys the vaporized gas generated in the vaporizer 24 to the mixing chamber 27. Further, of the air sent from the combustion fan 33, the primary air flowing from the primary air vent hole 22 through the primary air chamber 20 and flowing into the primary air rectification hole 32 is mainly the primary air rectification side of the primary air vent hole 22 side. It is highly skewed to flow into the primary air ring 30 from the hole 32. However, since the biased primary air collides with the outer peripheral surface of the mixing chamber inlet section 28, it is rectified in the primary air ring 30 and uniformly flows into the mixing chamber inlet section 28. Therefore, since the mixing of the primary air and the vaporized gas becomes uniform, a uniform premixed gas is formed, and the uniform premixed gas is burned by the burner head 29, so that the combustion characteristics are improved. On the other hand, most of the air sent from the combustion fan 33 becomes secondary air flowing from the secondary air vent 25 through the secondary air chamber 21 to the burner head 29, and this secondary air promotes the previous combustion. .

The vaporized air amount and the sum of the primary air amount and the secondary air amount are almost determined by the ratio between the opening area of the vaporized air inlet 23 and the opening area of the primary air vent 22. Further, the amount of primary air and the amount of secondary air are almost determined by the ratio of the opening area of the primary air rectifying hole 32 to the opening area of the secondary air vent hole 25. Thus, the amount of each air is determined by the ratio of the opening area of each hole. That is, since the primary air amount is set based on the opening area of the primary air rectification hole 32, the primary air amount can be set stably.

 Next, another embodiment of the primary air ring will be described.

In the embodiment shown in FIG. 3, the primary air ring 34 is cut and raised substantially horizontally and in the same diagonal direction to open a mixed flow primary air rectification hole 35. And the mixed flow primary air rectification hole 35
The primary air that has passed through forms a swirling flow in the primary air ring 34 and is rectified, so that it flows uniformly into the mixing chamber inlet 28 to form a uniform premixed air. In addition, the swirled primary air is highly turbulent, which promotes mixing. Therefore, since the premixed gas which is uniform and sufficiently mixed is burned by the burner head 29, there is an effect that the combustion characteristics are greatly improved as compared with the embodiment shown in FIGS.

Effects of the Invention As described above, the following effects can be obtained by the oil combustion device and the primary air ring for the device of the present invention.

(1) Since a large number of primary air rectifying holes are opened in the primary air ring so as to face the outer peripheral surface of the inlet of the mixing chamber, the primary air is rectified to form a uniform premixed gas, and the combustion characteristics are improved. .

(2) Since the primary air rectifying hole is opened in the primary air ring, the primary air amount can be set stably.

(3) Since the diagonal primary air straightening holes are opened in the primary air ring, there is an effect that the combustion characteristics are greatly improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an oil combustion apparatus according to an embodiment of the present invention, FIG. 2 is a partially cutaway perspective view of FIG. 1, FIG. 3 is a perspective view of a primary air ring showing another embodiment, FIG. 4 is a cross-sectional view of a conventional oil combustion device. 16 ... body, 17 ... vaporizer base, 18 ... partition plate, 19
… Vaporized air chamber, 20… Primary air chamber, 21… Secondary air chamber, 22… Primary air vent, 23… Vaporized air inlet, 24…
… Vaporizer, 25… secondary air vent, 26… primary air inlet, 27… mixing chamber, 28… mixing chamber inlet, 29… burner head, 30, 34… primary air ring, 31 … Evaporator outlet, 32… Primary air straightening hole, 35… Differential primary air straightening hole.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location F23D 11/04 621 F23D 11/04 621D 11/40 11/40 A F23L 1/00 F23L 1/00 B (72) Inventor Junichi Ueda 1006 Kazuma, Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (56) References JP-A-3-158605 (JP, A) JP-A-2-272213 (JP, A)

Claims (2)

(57) [Claims] 1. A vaporized air chamber, a primary air chamber, and a secondary air chamber, each of which has a main body divided from below by a vaporizer base and a partition plate, a primary air vent hole and a vaporized air inlet opened in the vaporizer base. A vaporizer provided in the primary air chamber so as to cover the vaporized air inlet, a secondary air vent and a primary air inlet opened opposite to the partition plate and the outlet of the vaporizer, and the primary air A mixing chamber provided in the secondary air chamber forming a mixing chamber inlet portion facing the primary air chamber from an inlet; a burner head provided at an upper end of the mixing chamber; and an outlet of the mixing chamber inlet portion and a vaporizer. And a middle cylindrical primary air ring provided in the gap between the vaporizer and the partition plate, and a large number of primary air openings in the primary air ring and facing the outer peripheral surface of the mixing chamber inlet portion. Oil combustion with rectifying holes Location. 2. A primary air ring of an oil-fired device having a diagonal primary air straightening hole opened substantially horizontally and in the same oblique direction.