JPS59142318A - Burner - Google Patents

Abstract

PURPOSE:To increase reliability and durability of a burner and to obtain excellent combustion at the time of igniting by forming a combustion chamber by a combustion ring in which a can inner drum is projected upwardly from the evaporating cylinder. CONSTITUTION:A number of air injection holes 16 are formed around the peripheral of the side wall of an evaporating cylinder 11 provided upright in communication with an air channel 15 for combustion air, from a blower consisting of a motor 12, a fan 13 and a fan case 14 in the center of the combustion chamber 10. Furthermore, a tubular auxiliary combustion cylinder 17 provided with an opening 18 and a recycling hole 19 so that fine grains injected through a nozzle 1 does not come into collision with a position which does not contact the inner drum 6 around the periphery of the evaporating cylinder 11, is provided upright at a position lower than the evaporating cylinder 11 so that a premixing region 20 is formed between the evaporating cylinder 11 and the auxiliary combustion cylinder 17. Further, the combustion ring 21 in which the inner drum is projected so as to control the flow and pressure of the combustion gas within the combustion chamber 10, is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a combustion device used in water heaters and household heating equipment.

Conventional Structure and Problems Conventionally, this type of combustion apparatus has been structured as shown in FIG. That is, the particles sprayed from the nozzle are
Yellow flame diffusion combustion is performed mixed with the swirling air flow from the lower air outlet 16 of No. 1, and the combustion heat increases the temperature of the surface of the vaporization tube 11, particles collide with the combustion flame, and radiant heat causes the vaporization tube 11 and the auxiliary combustion tube to Mixing and vaporization are promoted in the premixing region 2o between 17 and 17, and vaporization blue flame combustion is performed in the air injection hole 16 at the upper part of the vaporization cylinder 11, which becomes a combustible air amount. Aiming at pressure regulation, premixing area 2
This method promotes the residence time of mixing and vaporization in the premixing region 20, and further promotes vaporization by recirculating the combustion exhaust gas into the premixing region 20, thereby improving combustion characteristics. Since the combustion ring 21 needs to be positioned immediately after the combustion flame, the problem of invagination will occur unless a high-quality material with excellent heat resistance that can be used in a high-temperature atmosphere that is directly affected by combustion heat is used. It wasn't possible.

In addition, the gap between the combustion ring 21 and the can body 8 needs to be set in consideration of the thermal expansion of the material in a high-temperature atmosphere. During combustion ignition when the temperature is low, combustion exhaust gas is directly discharged from the gap, which has the disadvantage of deteriorating the ignition combustion characteristics.

Purpose of the Invention The present invention eliminates such conventional drawbacks, and improves reliability and LTL durability by eliminating combustion auxiliary substances during the high temperature atmosphere after combustion flame formation, and improves the reliability and durability of the can body and combustion. By eliminating the gaps between the rings, good vaporization combustion can be achieved during ignition.

Structure of the Invention In order to achieve this object, the present invention provides an atomization means using pressure spray facing into the can body from an opening provided in the can body, and a means for supplying combustion air to the can body. A vaporizing cylinder with many air blowing holes on the side wall is installed in the center,
The air ejected from the air ejection holes is ejected along the outer circumferential wall of the vaporization cylinder in the connecting direction, swirls at high speed inside the can, and mixes and burns the fuel particles ejected from the atomization means using pressure spray with the high-speed swirling air. In the combustion chamber, the inner body of the can is projected to the inner surface above the vaporization cylinder to form a combustion chamber.

With this configuration, the combustion flame formed in the upper part of the carburetor is suppressed by the protruding surface of the can body at the upper part of the carburetor to form a combustion chamber, thereby promoting mixing and mixing in the premixing region. By increasing the residence time of vaporization and further recirculating the combustion exhaust gas into the premixing region, vaporization is promoted and combustion characteristics are improved. It has the same effect as a conventional combustion ring, and since a part of the ice wall inside the can protrudes, it is highly reliable and does not get locally heated even in high temperature atmospheres. Because of this structure, there is no gap between the cylinder and the can body during ignition and combustion, and good vaporization combustion characteristics can be obtained.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1, 2, 2, and 3. In FIG. 3, the same functional parts as in FIG. 1 are given the same numbers.

In the figure, reference numeral 1 denotes a nozzle as an atomizing means, and fuel oil sent from an oil tank (not shown) is sprayed from the tip of the nozzle 1 through an electromagnetic pump 2 and an oil feed pipe 3. Reference numeral 4 denotes a support tube in which the nozzle 1, the oil pipe 3, and the ignition device 6 are assembled, and the tip of the nozzle 1 and the ignition device are connected through an opening 9 at the bottom of the can body 8, which is composed of an inner shell 6 and an outer shell 7. 6 is provided so that the tip thereof faces the combustion chamber 10. Reference numeral 11 denotes a vaporizer cylinder installed in the center of the combustion chamber 10 in communication with a wind cylinder 16 for supplying combustion air from a blower composed of a motor 12, a fan 13, and a fan case 14. An air outlet 16 is provided. Reference numeral 17 designates openings 18 and recirculation holes 19 at positions around the vaporizing cylinder 11 that do not contact the inner shell 6 so as to prevent particles ejected from the nozzle 1 from colliding with each other.
This is a cylindrical auxiliary combustion cylinder provided with a cylindrical auxiliary combustion cylinder, which is installed upright at a position lower than the vaporization cylinder 11 so as to form a premixing region 2o between it and the vaporization cylinder 11. Reference numeral 21 denotes a combustion ring having an inner shell 6 protruding from the inner surface in order to control the flow and pressure of combustion gas within the combustion chamber 10.

22 is a baffle plate, and 23 is an exhaust hole.

The operation of this embodiment will be explained below.

The fuel particles are sucked up from the oil tank by the electromagnetic pump 2, and the pressurized oil passes through the oil supply pipe 3 and is directed from the nozzle 1 into the combustion chamber 10 through the opening 18 of the auxiliary combustion chamber 17 toward the vaporization cylinder 11. sprayed.

On the other hand, combustion air is supplied into the vaporization cylinder 11 via the wind cylinder 15 by a blower composed of a motor 12, a fan 13, and a fan case 14, and is ejected from an air jet hole 16 in a high-speed swirling flow.

In the combustion process, fine particles sprayed from nozzle 1 are transferred to vaporizer cylinder 1.
It mixes with the high-speed swirling flow from the air jet hole 16 of No. 1 and is ignited by the ignition device 6.

After ignition, the spray particles are mixed with the swirling air flow from the vaporizer tube 11 in the premixing region 20 between the vaporizer tube 11 and the auxiliary combustion tube 1A, and yellow flame diffusion combustion is performed. As a result, evaporation and vaporization in the premixing region 2o are promoted due to the temperature rise in the vaporization tube 11 and the auxiliary combustion tube 1, and the collision of particulates to diffuse combustion, and the amount of combustible air is increased to the upper air nozzle 2 of the vaporization tube 11. Figure 3

Claims (1)

[Claims] A vaporizer in which an atomization means by pressure spray is faced into the can body through an opening provided in the can body, and a large number of air jet holes are provided in the side wall in the center of the can body as means for supplying combustion air. A tube is installed upright, and the air ejected from the air jet hole is ejected in a tangential direction along the outer peripheral wall of the vaporizer tube, swirling at high speed inside the can, and fuel particles and high-speed swirling air are ejected from the atomization means using pressure spray. A combustion device in which a combustion chamber is formed by a combustion ring in which the inner body of the can is protruded to the inner surface above the vaporization cylinder.