JP2734798B2 - 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 premixing type combustion device used for an oil fan heater or the like.

[0002]

2. Description of the Related Art As shown in FIGS. 3 and 4, a conventional combustion apparatus of this type includes a blower 12 for supplying combustion air having a fan 11 and a flame holding apparatus having a vaporizing cylinder 13 and a number of flame holes 14a. And a burner 15 made of a plate 14. The combustion air taken in from the air supply port 12 a of the blower 12 is supplied to the air hose 16 by the rotation of the fan 11.
And is supplied to the vaporization cylinder 13. In the vaporizing cylinder 13, the combustion air supplied from the blower 12 and the vaporized fuel vaporized by the vaporizing cylinder wall are mixed, and the flame holding plate 14 is formed.
To form a flame.

[0003]

However, in the above-mentioned conventional configuration, as shown in FIG. 4, the hose end 16a of the air hose 16 is fitted and fixed to the outlet 12b of the blower 12, so that the hose end A space 17 is formed between the fan case 16a and the blower case 12c, and a turbulent air turbulence occurs in the space 17 to prevent combustion air from flowing into the air hose 16. That is, if such air turbulence occurs, it is impossible to supply a constant amount of combustion air to the vaporizing cylinder 13, and the flame formed on the flame holding plate 14 becomes unstable. Further, since a fixed amount of combustion air cannot be supplied, yellow fire and lift flame are likely to occur when the supply amount of the vaporized fuel or the rotation speed of the fan 11 varies. In addition, due to the generation of the vortex air turbulence, a sound is generated in the combustion air flow, and the sound is expanded in the vaporization cylinder 13 and transmitted to the outside as combustion noise from the flame opening 14 a of the flame holding plate 14. You.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a combustion device which maintains stable combustion and has low noise.

[0005]

According to the present invention, in order to solve the above-mentioned problems, the connection end of the air hose on the blower side is divided in half to form a semi-cylindrical portion, and the semi-cylindrical portion is inserted into the outlet of the blower. Then, the wind from the blower collides with the semi-cylindrical portion to change the direction of the wind.

[0006]

According to the present invention, when the combustion air flows into the air hose, no turbulent air turbulence is generated between the end of the air hose and the blower case. Therefore, the combustion air flowing into the air hose is stabilized, and a constant amount of combustion air can be supplied to the vaporizing cylinder, so that the flame formed in the burner section is stabilized.
Then, even if the supply amount of the vaporized fuel or the rotation speed of the fan varies, yellow fire and lift flame are less likely to occur. In addition, since the vortex-like air turbulence does not easily occur, the noise generated in the combustion air flow is reduced, and the combustion noise can be reduced.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, reference numeral 1 denotes a burner section, a vaporizing cylinder 2 for vaporizing fuel and mixing it with combustion air, and a flame holding plate for causing a mixed gas from the vaporizing cylinder 2 to be ejected from a flame hole 3a and burned. The burner case 4 covers the outer periphery of the vaporizing cylinder. Reference numeral 5 denotes a blower for supplying combustion air into the vaporizing cylinder 2 of the burner unit 1, and a motor 6 and a fan 7
Consists of An air hose 8 connects the burner unit 1 and the blower 5 with one end connected to a connection port 4a of the burner case 4.
The other end is connected to the outlet 9 of the blower case 5a. The air hose 8 is formed of a rubber material, and the connection side to the blower case 5a is halved to form a semi-cylindrical shape. I have.

In the above configuration, the combustion air taken into the blower 5 is sent to the outlet 9 by the rotation of the fan 7, passes through the air hose 8 to the burner unit 1, and is supplied with the vaporized fuel in the vaporization cylinder 2. The mixture is mixed and ejected from the flame holes 3a of the flame holding plate 3 attached to the upper part of the vaporization cylinder 2 to burn.

Here, when the combustion air flows into the air hose 8 from the outlet 9, the semi-cylindrical portion 8 of the air hose 8
a is intruding and closes the space 10 between the semi-cylindrical portion 8a and the blower case 5a, so that the combustion air collides with the semi-cylindrical portion 8a of the air hose 8, and the turbulent air turbulence as in the prior art. Does not occur. Also, even if air flows into the space 10, it is extremely small, and there is almost no influence. Therefore, a certain amount of combustion air can be supplied from the blower 5 to the vaporizing cylinder 2, and a very stable premixed flame can be formed on the flame holding plate 3. Further, since the supply amount of the combustion air is stable, the combustion state of the flame is unlikely to be abnormal combustion such as yellow flame or lift flame even if the rotational speed of the vaporized fuel or the fan 7 varies. As a result, TDR
It becomes a wide combustion device.

In addition, since a turbulent air turbulence is hardly generated, the combustion air efficiently flows into the air hose 8, so that a small amount of noise is generated, and the combustion noise is reduced, resulting in a low noise combustion device.

[0011]

As described above, the combustion apparatus according to the present invention has an effect that stable combustion can be performed and noise can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a combustion apparatus according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a blow-out port in FIG.

FIG. 3 is a sectional view of a main part of a combustion device in a conventional example.

FIG. 4 is an enlarged sectional view of a blow-out port in FIG. 3;

[Explanation of symbols]

 Reference Signs List 1 burner 5 blower 8 air hose 8a semi-cylindrical part 9 outlet

Claims (1)

(57) [Claims] 1. A burner section, a blower for supplying combustion air to the burner section, and an air hose for connecting the burner section and the blower, wherein a connection end of the air hose on a blower side is divided in half. A combustion apparatus comprising: a cylindrical portion; a semi-cylindrical portion projecting into an outlet of a blower; and a wind from the blower colliding with the semi-cylindrical portion to change a direction of the wind.