JP3030210B2 - Combustion equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion apparatus used for an oil fan heater, an oil hot air heater, etc., for vaporizing and burning a liquid fuel.

[0002]

2. Description of the Related Art Conventionally, in a burner of this type, a disc-shaped disk is provided in a burner portion to rectify a mixed gas obtained by stirring and mixing air and vaporized gas by rotation of a rotary plate and a mixing plate. A head 4 is used.

As shown in FIG. 3, the lower disk head 4 has a large hole 4b1 at the bottom center.
b, an upper disk head 4a having a plurality of small holes 4a1 formed along the bottom circumference is combined.

[0004]

However, in the disk head 4 having the above structure, the generated mixed gas flows through the large hole 4b1 of the lower disk head 4b and strikes the bottom of the upper disk head 4a. Does not flow well into the small hole 4a1 provided in the above, and a part thereof stays around the center thereof, and this flows backward and enters the rotary plate or the mixing plate, etc., where it evaporates and dries to adhere as tar. As a result, there is a drawback that the liquid fuel hardly evaporates, unburned gas accumulates and odor is generated, and furthermore, the attached tar becomes a load on a rotating body such as a rotary plate and a mixing plate.

An object of the present invention is to provide a combustion apparatus which solves the above-mentioned drawbacks, prevents a backflow of a mixed gas, and enables good combustion.

[0006]

That is, according to the present invention, a liquid fuel is vaporized and mixed with air, the mixed gas is rectified through a disk-shaped disk head, and is burned by being ejected from a burner head for combustion. In the apparatus, the disk head is composed of a lower disk head having a large hole at the bottom center, and an upper disk head having a plurality of small holes in the bottom circumferential direction and a slightly larger hole provided at the center. You.

[0007]

According to the present invention, when a hole is provided in the center of the bottom of the upper disk head, the mixed gas stirred with air by the rotation of the rotary plate and the mixing plate passes through the large hole of the lower disk head and the upper disk. Since it hits the bottom of the head and smoothly flows into the hole at the center and the small hole on the circumference, there is no stagnation and backflow of the mixed gas is prevented.

[0008]

FIG. 1 shows the structure of a burner section 1 of an oil hot air heater to which the present invention is applied. In FIG. 1, 2
Is a bottomed cylindrical burner body, and the burner body 2 is heated by an electric heater 5. or,
A blower case 14 accommodating an air supply fan 6 is screwed below the burner body 2, and a conical rotary cone is provided on a rotating shaft of a motor (not shown) to which the air supply fan 6 is fixed. 8, a disk-shaped rotary plate 9 and a screw-shaped mixing plate 10 are screwed, respectively, to form a stirrer. The stirrer is installed through a hole in the bottom of the burner body 2. It has become. Further, a fuel nozzle 7 for supplying petroleum fuel is mounted near the side surface of the rotary cone 8.

A disk head 4 is mounted inside the burner body 2 above the stirring section, and a burner head 11 is further mounted on the disk head 4. The disk head 4 is a feature of the present invention, and as shown in FIG. 2, a small-diameter lower disk head 4b and a large-diameter upper disk head 4a are integrally formed via a step 4c. . The lower disk head 4b has a large hole 4b1 at the center.
A bottom plate with an opening is provided integrally, while a plurality of small holes 4a1 are formed along the circumference at the bottom of the upper disk head 4a.
A bottom plate 4d having a slightly larger hole 4a2 in the center is mounted and fixed on the step 4c.

Reference numeral 3 denotes a burner case provided on the outer periphery of the burner body 2, and an igniter 12 and a frame rod 11 are attached to an upper side wall thereof.

The burner section 1 of the combustion apparatus according to the present invention has the above-described configuration, and the operation during combustion will be described below.

When the combustion operation is started, the air supply fan 6 rotates, and at the same time, the rotary cone 8, the rotary plate 9 and the mixing plate 1 attached to the rotating shaft.
Zero also rotates. Petroleum fuel is ejected from the tip of the fuel nozzle, adheres to the rotary cone 8 and scatters from the periphery of the rotary plate 9, but is vaporized by the heat of the burner body 2 heated by the electric heater 5, and the vaporized gas rotates. The mixture is stirred by the plate 9 and the mixing plate 10 and mixed with the air to form a mixed gas. This mixed gas flows from the large hole 4b1 of the lower disk head 4b,
The mixed gas strikes the bottom plate 4d of the upper upper disk head 4a, but the mixed gas has a slightly larger hole 4a2 at its center, so that it does not stay around the center and smoothly flows to the hole 4a2 and the small hole 4a1 on the circumference. The gas flows into the burner head 11 and is rectified.
By providing the slightly larger hole 4a2 at the center of the bottom of the upper disk head 4a, the flow of the mixed gas becomes smooth and does not stay, so that there is no backflow to the stirring section, and the rotary plate 9 and the mixing plate 10
Tar does not adhere to the like.

Further, tar is more likely to adhere to the rotary plate 9 and the mixing plate 10 as the temperature of the burner body 2 becomes higher. However, as described above, the tar adheres to the burner body 2 even at a high temperature because the backflow of the mixed gas is prevented. This makes it possible to widen the heating temperature range of the burner body 2.

[0014]

As described above, according to the present invention, the liquid fuel is vaporized and mixed with the air, the mixed gas is rectified through the disk-shaped disk head, and is ejected from the burner head and burned. In the combustion device, the disk head includes a lower disk head having a large hole in the center of the bottom and an upper disk head having a plurality of small holes in the bottom circumferential direction and a slightly larger hole in the center. As a result, the flow of the mixed gas becomes smooth and does not flow backward, so that tar is prevented from adhering to the rotary plate, the mixing plate, and the like, and good combustion operation can be performed.

Further, the adhesion of tar is more likely to occur as the temperature of the burner body is higher. However, as described above, the adhesion of tar becomes difficult even at high temperatures by preventing the backflow of the mixed gas, so that the heating temperature range of the burner body is widened. As a result, stable combustion operation can be performed.

[Brief description of the drawings]

FIG. 1 is a sectional view showing one embodiment of a burner section of a combustion device according to the present invention.

FIGS. 2A and 2B are diagrams showing the configuration of the disk head, wherein FIG. 2A is a plan view and FIG.

3A and 3B are diagrams showing a configuration of a conventional disk head, wherein FIG. 3A is a plan view and FIG. 3B is a cross-sectional view.

[Description of Signs] 4 Disk head 4a Upper disk head 4a1 A slightly larger hole in the center of the upper disk head 4a2 A plurality of small holes on the circumference of the upper disk head 4b Lower disk head 4b1 Large hole in the lower disk head

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takashi Saito 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP 5-256418 (JP, A) JP JP-A-4-359704 (JP, A) JP-A-4-320716 (JP, A) JP-A-4-320708 (JP, A) JP-A-6-1230 (JP, U) JP-B-5-6087 (JP, A) , B2) (58) Field surveyed (Int. Cl. ⁷ , DB name) F23D 11/40 F23D 11/04-11/08

Claims (1)

(57) [Claims] 1. A combustion apparatus in which a liquid fuel is vaporized and mixed with air, the mixed gas is rectified through a disk-shaped disk head, and is ejected from a burner head to burn the disk. A combustion apparatus comprising: a lower disk head provided with a large hole at the top; and an upper disk head provided with a plurality of small holes in the bottom circumferential direction and a slightly larger hole at the center.