JPH0116900Y2 - - Google Patents

Description

[Detailed explanation of the idea] (b) Industrial application fields The present invention relates to a vaporized liquid fuel combustion device.

(b) Prior Art Conventionally, in this type of vaporized liquid fuel combustion apparatus, one in which the burner body is made of a ceramic material such as alumina is known from Japanese Patent Application Laid-Open No. 113908/1983. By the way, in this conventional structure, because the ceramic material has a lower thermal conductivity than aluminum or iron, it is difficult to expect much heat back due to the combustion flame even after combustion has started, so the heater buried in the vaporization tube is often energized. This was extremely uneconomical.

In order to solve this problem, the applicant of the present application had previously proposed Japanese Patent Application No. 57-130701 (Japanese Unexamined Patent Publication No. 59-21911) as this type of vaporized liquid fuel combustion device, and This prior art will be explained based on FIG. 1. As shown in FIG.
The structure is such that the flame directly heats the outside of the vaporizing chamber 1 by being installed at the rear of the vaporizing chamber 16. A long space is required up to the openings 7', 7', and when a fire is extinguished, a large amount of unburned gas remains, causing a foul odor, and the apparatus becomes larger.

(c) Purpose This invention was made in view of the above-mentioned circumstances, and aims to reduce the amount of electricity applied to the heater as much as possible, reduce the generation of bad odors during fire extinguishing, and further downsize the device. There is.

(D) Structure The present invention includes a cylindrical vaporizing section 2 having a heater 5 on the peripheral wall and to which primary air is supplied from the base end, and one end connected to the distal end of the vaporizing section 2 via a connecting section 6. and a mixing section 3 whose other end is closed and whose diameter is larger than that of the vaporizing section 2, and a vaporizing tube 1 is formed of the mixing section 3, which is closed at the other end and has a larger diameter than the vaporizing section 2. In this configuration, the vaporizing mechanism 13 is disposed within the vaporizing section 2, and a flame port 7 for forming a combustion flame along the outer surface of the peripheral wall of the vaporizing section 2 is provided in the connecting section 6.

(E) Embodiment An embodiment of the present invention will be explained based on FIG. 2.
In Fig. 2, reference numeral 1 denotes a vaporization tube consisting of a vaporization tube (vaporization section) 2 and a mixing tube (mixing section) 3, and a heater 5 made of tungsten or the like is embedded in the vaporization tube 2 near the vaporization wall 4. The mixing tube 3 has a larger diameter than the vaporizing tube 2, and one end is connected to the tip of the vaporizing tube 2 via a flat circumferential surface (connection part) 6, and the other end is It is closed, and a plurality of flame ports 7, 7 are bored in the circumferential surface 6. A rotating shaft 8 is installed inside the vaporizer tube 2 by a motor (not shown).
A rotary atomizer 13 consisting of a rotary cone 9, a rotary plate 10, a diffusion vane 11, and a catalyst plate 12, which are pivoted on the
is installed. In addition, 14 is an oil supply pipe, 15
is the air diaphragm.

The combustion operation of the vaporized liquid fuel combustion apparatus according to the present invention constructed as described above will be described. From the oil supply pipe 14 to the rotary cone 9 of the rotary atomizer 13
The liquid fuel dropped onto the vaporizer wall 4 of the vaporizer tube 2 of the vaporizer tube 1, which has been heated in advance by the heater 5, becomes atomized fine particles due to the centrifugal force of the rotary plate 10 caused by the rotation of the rotary atomizer 13. and collide. Then, the vaporization wall 4, which has been heated in advance by the heater 5, vaporizes the colliding atomized fuel, and this vaporized fuel is mixed with the primary air by the diffusion vane 11, and mixed by the primary air. The tube progresses in three directions,
It reaches the flame outlet 7,7.

The vaporized fuel gas that has reached the flame ports 7, 7 is ejected downward from the flame ports 7, 7 so as to be substantially parallel to the outer surface of the circumferential wall of the vaporizer tube 2, and is ignited and burned. A combustion flame is formed along the flame openings 7, 7.

Therefore, since the vaporizer tube 2 is heated directly by the combustion flame, even if the vaporizer tube 1 is made of ceramic such as alumina, which has low thermal conductivity, the heater 5 does not need to be energized frequently. By keeping the temperature at which vaporization is possible, the power supply to the heater can be minimized.

In addition, since the flow path of the vaporized gas vaporized in the vaporization tube 2 is short, there is no possibility that a large amount of unburned gas remains in the vaporization tube 1 during extinguishing the fire, causing a bad odor. Since the length and diameter of the cylindrical tube 2 can be reduced, the device can be made smaller.

(f) Effect Since the vaporized liquid fuel combustion device according to the present invention is configured as described above, the outer surface of the peripheral wall of the vaporizing section where fuel is scattered by the atomizing mechanism can be heated by directly bombarding it with combustion flame. Even if the vaporizer cylinder is made of ceramic such as alumina, there is no need to frequently energize the heater, which is not only economical as the energization to the heater can be minimized, but also the vaporized gas vaporized in the vaporizer. Since the flow path of the gas can be shortened, a large amount of unburned gas will not remain in the vaporization cylinder during extinguishing the fire and will not generate a bad odor, thereby reducing the occurrence of a bad odor during the extinguishing process. Furthermore, since the length and diameter of the vaporizing section can be reduced, it is possible to downsize the device.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a vaporized liquid fuel combustion apparatus according to the prior art, and FIG. 2 is a sectional view of an embodiment of a vaporized liquid fuel combustion apparatus according to the present invention. 1... Vaporization tube, 2... Vaporization tube (vaporization part), 3
. . . Mixing tube (mixing section), 5 . . . Heater, 6 . . . Circumferential surface (connecting portion), 7 .

Claims (1)

[Scope of utility model registration request] a cylindrical vaporizing section having a heater on the peripheral wall and to which primary air is supplied from the base end; one end connected to the distal end of the vaporizing section via a connecting section and the other end closed; The mixing part has a diameter larger than that of the fuel supply pipe, and the carburetor cylinder consists of an atomizing mechanism that atomizes the fuel from the fuel supply pipe, and an atomizing mechanism that atomizes the fuel from the fuel supply pipe. A vaporizing liquid fuel combustion device characterized in that the connecting portion is provided with a flame port along which a combustion flame is formed.