JPH03158606A - Kerosene burner and its primary air ring - Google Patents

Abstract

PURPOSE:To make uniform the mixing of gas and air and setting stably the primary air volume by providing a primary air ring installed in the gas between the carburetor and partition plate with many primary air straightening holes that open opposite to the outer circumferential face of the inlet section of a mixing chamber. CONSTITUTION:A hollow primary air ring 30 is installed in the gap between a partition plate 18 and a carburetor 24, and many primary air flow straightening holes 32 are opened opposite to the primary air ring 30 and the outer circumferential face of the inlet section 28 of a mixing chamber 28. Out of the air that is sent from a combustion fan 33 the vaporization air that flows into the carburetor 24 from the vaporization air inlet 23 carries the vaporization gas generated in the carburetor 24 to a mixing chamber 27, and the primary air that goes through a primary air chamber 20 from a primary air ventilation holes 22 and flows into the primary air flow straightening hole 32 collides with the outer circumferential face of the inlet section 28 of a mixing chamber and its flow is straightened in the primary air ring 30 and it flows into the inlet section 28 of the mixing chamber. Accordingly a uniform premixture gas of the primary air and vaporization gas burns in the burner head 29. And, stable setting can be made for the volume of the primary air due to the area of opening in the primary air flow straightening holes 32.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to the introduction of uniform primary air and the setting of the primary air in oil vapor combustion devices.

2. Description of the Related Art As shown in FIG. 4, a conventional device of this type has a main body I divided by a carburetor base 2 and a partition plate 3 into a vaporization air chamber 4, a primary air chamber 5, and a secondary air chamber 6. It is formed. Each of the chambers 4 to 6 is communicated with each other by a primary air vent 7 opened on the left and right sides in the carburetor base 2 and a secondary air vent 8 opened in the partition plate 3. Further, the vaporizers 10 were arranged side by side on the vaporizer base 2 so as to cover the vaporized air population 9. The primary air population 11 is opened on the left and right sides of the partition plate 3, each of the two mixing chambers 12 arranged side by side is provided in the secondary air chamber 6, and the mixing chamber inlet 13 faces the primary air population 11. The burner head 14 is provided at the upper end of the mixing chamber 12. A combustion fan 15 communicates with the vaporizing air chamber 4 .

In the above configuration, the air sent from the combustion fan 15 is vaporized from the vaporization air population 9! Vaporized air enters the mixing chamber 12 through S10, primary air passes through the primary air chamber 5 from the secondary air vent 7 and further enters the mixing chamber 12 from the secondary air population 11, and primary air enters the mixing chamber 12 from the secondary air vent 8. The secondary air passes through the secondary air chamber 6 and enters the burner head 14. The vaporized gas generated in the vaporizer 10 enters the mixing chamber 12 and mixes with vaporized air and primary air to form a premixed mixture, which is combusted in the burner head 14, and combustion is further promoted by the secondary air.

Problems to be Solved by the Invention However, in the above configuration, the secondary air vent 7
are opened on the left and right sides of the carburetor base 2, so -
The air then entered the mixing chamber inlet 13 in a very uneven manner. Therefore, there has been a problem that the mixture of the vaporized gas and the primary air becomes non-uniform. Further, since the secondary air flows into the mixing chamber 13 radially (entering from the left and right sides while changing direction), there is a problem in that the mixing characteristics are poor. Therefore, the combustion characteristics became very poor. On the other hand, the amount of primary air is the carburetor base 2 and vaporizer 1.
Since the setting is based on the passage resistance of the gap between the main body and the main body 10, there is a problem in that the primary air amount fluctuates greatly due to assembly errors.

The present invention is intended to solve such conventional problems, and its primary purpose is to equalize the mixing of gas and air and to stably set the amount of primary air.

The second objective is to obtain a primary air ring that improves mixing properties.

Means for Solving the Problems In order to achieve the above first object, the present invention provides a vaporizing air chamber, a primary air chamber, and a secondary air chamber, each of which is formed by partitioning a main body from below by a vaporizer base and a partition plate. a primary air vent and a vaporized air inlet opened in the vaporizer base; a vaporizer provided in the secondary air chamber; a secondary air vent and a secondary air inlet opened in the partition plate; −
A mixing chamber provided in the secondary air chamber forming a mixing chamber inlet facing the primary air chamber from the secondary air population, a burner head provided at the upper end of the mixing chamber, the mixing chamber population part, and a vaporizer. a primary air ring surrounding the outlet of the carburetor and provided in a gap between the vaporizer and the partition plate; and a large number of primary air rectifying holes opening in the primary air ring facing the outer peripheral surface of the inlet of the mixing chamber. It is equipped with the following.

Further, in order to achieve the second object, the present invention has diagonal flow-secondary air rectifying holes opened in the primary air ring in a substantially horizontal direction and in the same diagonal direction.

Effect of the Invention With the above-described configuration, the secondary air passes through the primary air rectifying hole and collides with the outer peripheral surface of the mixing chamber inlet, so that it is rectified within the secondary air ring and uniformly reaches the mixing chamber inlet. Inflow. Therefore, since the subair and vaporized gas are mixed uniformly, the combustion characteristics are improved. On the other hand, since the primary air volume is set by the opening area of the primary air rectifying hole, the air volume can be stably set.

In addition, the primary air that has passed through the diagonal flow-order air rectification hole forms a swirling flow within the primary air ring and is rectified.
It flows uniformly into the inlet of the mixing chamber.

In addition, the swirling primary air is highly turbulent, which promotes mixing. Therefore, combustion characteristics are greatly improved.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. In Figures 1 and 2, 16 is the main body in the form of a box,
Sequentially from the bottom, a vaporizing air chamber 19, a primary air chamber 20, and a secondary air chamber 21 are formed by being partitioned by a vaporizer base 17 and a partition plate 18. Reference numeral 22 denotes primary air vents, which are opened on the left and right sides of the carburetor base 17, and 23 is a vaporized air inlet, which is opened inside the primary air vents 22 on the left and right sides of the carburetor base 17. 24 is the carburetor base 17
The vaporizers are arranged on the left and right sides and are provided in the primary air chamber 20 so as to cover the vaporized air population 23. Reference numeral 25 denotes a secondary air vent, which opens at the front and rear of the partition plate 18. Reference numeral 26 denotes a primary air inlet, which opens in the partition plate 18 opposite to the outlet of the carburetor 24. Reference numeral 27 denotes mixing chambers that are arranged side by side in the main body 16, and are provided in the secondary air chamber 21, forming a mixing chamber inlet portion 28 that faces the primary air chamber 20 from the secondary air inlet 26. A burner head 29 is provided at the upper end of the mixing chamber 27. Reference numeral 30 denotes a primary air ring having a central cylindrical shape, which surrounds the mixing chamber inlet 28 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 designates primary air rectifying holes, which are opened in large numbers in the primary air ring 30 and facing the outer circumferential surface of the mixing chamber inlet portion 28 . 33 is a combustion fan, which is communicated with the vaporizing air chamber 19.

In the above configuration, the air sent from the combustion fan 33 is vaporized from the vaporized air population 23! The vaporized air flowing into S24 conveys the vaporized gas generated in the vaporizer 24 to the mixing chamber 27. Also, of the air sent from the combustion soan 33,
The primary air that passes through the primary air chamber 20 from the - primary air vent 22 and flows into the - secondary air rectifying hole 32 mainly flows from the primary air regulating hole 32 on the primary air vent 22 side to the primary air ring 30.
Because of the inflow into the interior, the temperature is very biased. However, since this biased primary air collides with the outer peripheral surface of the mixing chamber inlet 28, it is rectified within the secondary air ring 30 and uniformly flows into the mixing chamber inlet 28. Therefore, since the secondary air and the vaporized gas are mixed uniformly, a uniform premixture is formed, and this uniform premixture is combusted in 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 passes through the secondary air vent 25 and the secondary air chamber 21 to the burner.
9, and this secondary air promotes the previous combustion.

The amount of vaporized air and the sum of the amount of primary air and the amount of secondary air are determined mostly by the ratio of the opening area of the vaporizing air inlet 23 and the opening area of the primary air vent 22. Furthermore, the legal air volume and the secondary air volume are determined mostly by the ratio of the opening area of the primary air rectifying hole 32 and the opening area of the secondary air ventilation hole 25. In this way, each amount of air is determined by the ratio of the opening areas of the bow. That is, since the legal air volume is set by the opening area of the primary air rectifying hole 32, the primary air volume can be stably set.

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

In the embodiment shown in FIG. 3, a diagonal flow air rectifying hole 35 is opened in the secondary air ring 34 by cutting and raising it substantially horizontally and in the same diagonal direction. The primary air that has passed through the diagonal flow-secondary air rectification hole 35 forms a swirling flow within the primary air ring 34 and is rectified, so that it uniformly flows into the mixing chamber inlet 28 and forms a uniform premixture. Ru. In addition, the swirling primary air is highly turbulent, which promotes mixing.

Therefore, the homogeneous and well-mixed premixed air is combusted in the burner head 29, resulting in the effect that the combustion characteristics are greatly improved compared to the embodiments shown in FIGS. 1 and 2.

Effects of the Invention As described above, the oil combustion device and the secondary air ring for the device of the present invention provide the following effects.

(1) Since a large number of primary air rectifying holes are opened in the -primary air ring facing the outer circumferential surface of the mixing chamber inlet, the -primary air is rectified and a uniform premixture is formed, improving combustion characteristics. improves.

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

(3) Since the secondary air ring is provided with diagonal flow air straightening holes, the combustion characteristics are greatly improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an oil combustion device according to an embodiment of the present invention, FIG. 2 is a partially cutaway perspective view of FIG. 1, and FIG. 3 is a perspective view of a primary air ring showing another embodiment. FIG. 4 is a sectional view of a conventional oil combustion device. 16... Main body, 17... Carburizer base, 18... Partition plate, 19... Vaporizing air chamber, 20... Law Air chamber, 21...
Secondary air chamber, 22-...- Secondary air vent, 23-
..... Vaporization air inlet, 24 ..... Vaporizer, 2
5...Secondary air vent, 26...-Secondary air inlet, 27-...Mixing chamber, 28...
Mixing chamber inlet section, 29...Burner head, 30.
34...-Next air ring, 31...... Outlet of the carburetor, 32...-Next air rectification hole, 35.
... Diagonal flow-secondary air rectification hole.

Claims (2)

[Claims] (1) A vaporized air chamber, a primary air chamber, and a secondary air chamber formed by dividing the main body from below by a vaporizer base and a partition plate, and a primary air vent 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 that are open to face the partition plate and the outlet of the vaporizer; a mixing chamber provided in the secondary air chamber forming a mixing chamber inlet facing the primary air chamber; a burner head provided at the upper end of the mixing chamber;
an intermediate cylindrical primary air ring surrounding the mixing chamber inlet and the outlet of the vaporizer and provided in a gap between the vaporizer and the partition plate; An oil combustion device equipped with a large number of primary air rectification holes facing each other. (2) A primary air ring of an oil combustion device in which diagonal flow primary air rectifying holes are opened substantially horizontally and in the same diagonal direction.