JPS6238090Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a swirl combustion type burner, and more specifically, in a swirl combustion type burner that takes air from the tangential direction of the cylindrical furnace body, it flows from the air intake into the primary swirl chamber. The excess air taken in is introduced into the secondary swirling chamber and further into the tertiary swirling chamber,
Swirling combustion is configured to provide sufficient swirling motion to this air to lengthen the residence time of the flame in the furnace, to ensure sufficient mixing of air and fuel gas, and to achieve complete combustion. It concerns mold burners.

Conventionally, in this type of swirl combustion type burner, the air taken into the furnace from the air intake port is
Since all combustion is involved from the primary combustion stage, combustion was carried out in an excess air condition. For this reason, a large amount of aldehydes are produced, which has the disadvantage of deteriorating the quality of grains when used in grain drying equipment, and also because air and fuel gas are not mixed sufficiently. There was a drawback that a large amount of scattered carbon was generated when a large amount of combustion was performed.

This invention was made in order to eliminate the above-mentioned drawbacks, and in a swirl combustion type burner that takes in air from the tangential direction of the cylindrical furnace body.
A first separation plate is provided with a separation plate for separating air taken in from the air intake into the secondary swirling chamber, and is provided with an eccentric hole for introducing excess air from the primary swirling chamber into the secondary swirling chamber. The primary swirling chamber and the secondary swirling chamber are separated by a second separating plate provided with an eccentric hole for promoting swirling of the flame introduced into the secondary swirling chamber. By separating the secondary swirling chamber and the tertiary swirling chamber, sufficient swirling motion is imparted to the air and flame, and the residence time of the flame in the furnace is increased, allowing sufficient mixing of air and fuel gas. It is an object of the present invention to provide a swirl combustion type burner that can achieve complete combustion.

Hereinafter, a preferred embodiment of this invention will be described in detail with reference to the drawings.

In the figure, what is generally indicated by the reference numeral 1 is one example of the swirl combustion type burner according to this invention. 3 is a furnace main body, 5 is a cylindrical primary swirling chamber provided above the furnace main body 3, and an air intake port 7 is provided in the upper part of this primary swirling chamber 5 to allow air to flow in from a tangential direction. An air intake path 9 is formed in the primary swirling chamber 5 in communication with the air intake port 7. 11 is a furnace tube connected to the front end of the furnace body 3; 13 is the furnace tube 1;
1 is a diffusion tube fitted into the front end of the tube. Reference numeral 15 denotes a separation plate located below the primary swirling chamber 5 and provided in the air intake path 9. The separation plate 15 is formed into an arc shape with an appropriate radius of curvature, and its front end is bent upward. ing. Reference numeral 17 denotes a first separator plate for isolating the primary swirling chamber 5 and the secondary swirling chamber 19, and is provided with its peripheral edge fixed to the inner wall surface of the furnace body 3. A hole 21 that is eccentric with respect to the axis 0 of the main body 3 is penetrated, and a first turning aid plate 23 is provided on the front diagonally lower half-periphery of the peripheral edge of the hole 21.
It is provided to protrude toward the inside of the turning chamber 5. Reference numeral 25 denotes a second separator plate for isolating the secondary swirling chamber 19 and the tertiary swirling chamber 27, and the surrounding edge is fixed to the inner wall surface of the furnace cylinder 11. Furnace body 3
A hole 29 having a center Q eccentric to the axis 0 of the first separator 17 and the center P of the hole 21 of the first separator 17 is penetrated.

Next, the operation of the above configuration will be explained.

At the start of combustion, as shown in Figure 3,
Excess air in the air A taken into the primary swirling chamber 5 from the air intake port 7 is transferred to the secondary swirling chamber 19 by an eccentric hole 21 provided in the first separating plate 17 and a swirling support plate 23. The air introduced into the air and swirling in the air intake path 9 in the primary swirling chamber 5 is separated by a separation plate 15 into one for primary combustion and one for subsequent combustion, and the fuel gas is The flame F is mixed with combustion air and burns while swirling, and as shown in FIG.
Air A is taken in from the tangential direction in the primary swirling chamber 5 isolated by the separator 17, resulting in a strong swirling flow. , the swirling flow is strengthened and introduced into the secondary swirling chamber 19 through the hole 21. The swirling flow introduced into the secondary swirling chamber 19 collides with the second separator 25, and the swirling is further strengthened.
It mixes with the air introduced into the secondary swirling chamber 19 and burns while swirling, and is further introduced into the tertiary swirling chamber 27 through the eccentric hole 29 provided in the second separator 25 and burns while swirling. .

As described above, this invention provides a swirl combustion type burner that takes air in from the tangential direction of the cylindrical furnace body, in which a separation plate is provided in the primary swirl chamber to separate the air taken in from the air intake port, and The primary whirling chamber and the secondary whirling chamber are separated by a first separator plate having an eccentric hole for introducing excess air in the secondary whirling chamber into the secondary whirling chamber, and the secondary whirling chamber A swirling combustion type characterized in that a secondary swirling chamber and a tertiary swirling chamber are separated by a second separator plate provided with an eccentric hole for promoting swirling of the flame introduced into the chamber. Since it is a burner, it is possible to give sufficient swirling motion to the air and flame, and to lengthen the residence time of the flame in the furnace, allowing for sufficient mixing of air and fuel gas, resulting in complete combustion. It is.

Furthermore, by providing the second separator, the swirling motion of the air and flame is further promoted.

It should be noted that this invention is not limited to the above-mentioned embodiments, and can be implemented in modes other than the above-mentioned embodiments.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, in which Fig. 1 is a perspective explanatory view of a swirl combustion type burner according to this invention, Fig. 2 is a longitudinal sectional front explanatory view, and Fig.
4 are perspective explanatory views showing the operating state. Explanation of the symbols representing the main parts of the drawing, 3...
Furnace body, 5... Primary swirling chamber, 7... Air intake port,
15... Separation plate, 17... First separation plate, 19...
Secondary swirling chamber, 21... eccentric hole, 25... second
Separator, 27...Tertiary swirl chamber, 29...Eccentric hole.

Claims (1)

[Scope of utility model registration request] In a swirl combustion type burner that takes air in from the tangential direction of the cylindrical furnace body 3, a separation plate 15 for separating the air taken in from the air intake port 7 is provided in the primary swirling chamber 5, and the primary swirling chamber 5 Eccentric hole 2 for introducing excess air into the secondary swirling chamber 19
1 by means of a first separator 17 with a primary swirling chamber 5
The secondary swirling chamber 19 is separated from the secondary swirling chamber 19 by a second separator plate 25 provided with an eccentric hole 29 for promoting swirling of the flame introduced into the secondary swirling chamber 19. 19 and a tertiary swirling chamber 27 are provided separately.