JPS61128034A - Kerosene burner - Google Patents

Abstract

PURPOSE:To make a low total height of a casing and keep a stable feature of a kerosene burner against fall by a method wherein the upper part of a flue cooperatively connected to the upper part of the combustion chamber is bent to open toward the front surface of the casing and at the same time a shielding plate is arranged between an outer cylinder including the flue and the casing. CONSTITUTION:A flue 23 is bent forwardly at its upper part and opened near a discharging port 12 at the front upper part of the casing 11. A shielding plate 26 is arranged between the rear surface, the side surface and the upper surface of the casing 11 and the outer cylinder 22 through a clearance 27. The flue 23 is covered by the outer cylinder 22 at its circumference and guided to the discharging port 12 without receiving any influence of surrounding air flow, in particular a resistance against the draft, so that the draft corresponding to the total height can be sufficiently applied, and fuel gasified volume from the wick 18 and the air volume flowing from the air supplying port 14 through the small holes 20a and the large holes 21a can sufficiently be provided. A total height of the casing 11 is slightly higher than the upper end of the outer cylinder 22 and a short combustion unit can be provided while a sufficient draft being kept.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a wick vaporization type oil combustor, which can be used in stoves, dryers, etc.

2. Prior Art A conventional oil combustor of this type is, for example,
As shown in Publication No. 557, it had a structure as shown in Figure 2. That is, a combustion tube 6 consisting of a combustion chamber 2 constituted by a perforated plate 1, an outer cylinder 3 covering the outside of the combustion chamber 2, and a flue 4 provided above the combustion chamber 2 is housed in the casing 6. , a reflector plate 7 is provided between the combustion tube 6 and the housing 6, but the flue 4
stands upright and opens upward, and although the reflector plate 7 covers the rear surface of the flue 4, the upper surface of the casing 6 is exposed.

Problems to be Solved by the Invention In the structure described above, the draft of the combustion tube 6 is determined by the height of the combustion tube 6, that is, the total height from the lower end of the combustion chamber 2 to the upper end of the flue 4. There is a constraint that if there is not enough extra space between the flue 4 and the upper surface of the casing 6, the casing 6 will act as a flow path resistance and a sufficient amount of draft cannot be obtained. In order to increase the draft in the combustion tube 6 and make the amount of fuel vaporization and air supply even, it is necessary to make the height of the casing 6 a dog, and then make the total height of the combustion tube 6 a dog. However, in order to ensure safety against falling, there is a limit to the height of the casing 6.

In addition, the top surface of the casing 6 is constantly exposed to high-temperature exhaust gas, so it must be made of heat-resistant material, and at the same time, there is a risk of getting burned if it comes into contact with the core, or of causing a flame due to falling objects. There was a drawback.

Means for Solving the Problems In order to solve the above-mentioned conventional problems, the present invention curves the upper part of the flue connected above the combustion chamber to open toward the front of the housing, and the flue A heat shield plate is provided between the outer cylinder including the housing and the housing.

Effect: With the above configuration, the flue isolated from the space inside the housing can be continued to the front of the upper part of the housing, providing a large draft, and eliminating the need for an excessive space between the upper surface of the housing and the flue. The overall height of the casing is kept small to provide sufficient draft, and it also ensures stability against overturning.

In addition, a heat shield plate is provided between the flue and the top surface of the casing via an air layer, which avoids the risk of personal injury or fire due to overheating of the top surface of the casing. It becomes possible to treat the surface of the body, making it easy to process at low cost and in a convenient manner.

Furthermore, through the curved and extended flue, the heat retained in the exhaust gas can be converted into radiant heat and taken out to the front, making it possible to expect highly efficient heating and room heating effects.

EXAMPLE Hereinafter, an oil combustor that is an example of the present invention will be described with reference to the accompanying drawings.

In Figure 1, 11 is a housing, with an exhaust port 12 at the top of the front.
, a heat dissipation port 13 is opened in the middle part, and an air supply port 14 is opened in the lower part, and is fixed on a pedestal 16. A tank 16 is installed on the pedestal 16, and a fire pan part 1 is provided on the upper surface of the tank 16.

Reference numeral 18 denotes a flat lamp wick, the lower part of which is housed in the tank 16, and the upper part held in the fire pan 17, which moves up and down in conjunction with the rotation of the knob 19, with the tip protruding from the fire pan 1a during combustion. It is composed of

A flat combustion chamber 20 having a large number of small holes 20t+dog holes 212L is placed on the fire pan 17, and the part where the large holes 21& are formed is a red hot part 21 with a large opening. An outer cylinder 22 is provided on the outside of the combustion chamber 20, and the upper part of the outer cylinder 22 extends up to 2 degrees above the combustion chamber to form a flue 23. A secondary incandescent body 24 made of a perforated plate is provided in the flue 23, and an incandescent part 21 and a secondary incandescent body 2 are provided.
A window member 26 made of heat-resistant glass is provided on the front surface of the outer cylinder 22 facing the outer cylinder 4. Here, the flue 23 curves forward at the upper part and opens near the exhaust port 12 at the upper front surface of the housing 11, and a heat shield is provided between the rear, side and top surfaces of the housing 11 and the outer cylinder 22. 2e is provided via a gap 27.

The operation of the above configuration will be explained next.

The fuel vaporized from the lamp wick 18 burns in the combustion chamber 2o while mixing with the air flowing in from the small hole 201L and the large hole 21&, heating the red-hot part 21 to make it red-hot,
The exhaust gas rises into the flue 23. In the flue 23, the high-temperature exhaust gas heats the secondary incandescent body 24 to make it red-hot, and the excess heat is transferred to the exhaust port 12 while heating the surrounding outer cylinder 22.
It is discharged toward the front of the housing 11. Radiant heat from the incandescent part 21 and the secondary incandescent body 24 is supplied to the front side from the heat radiation port 13 via the window member 26.

Here, the flue 23 is surrounded by the outer cylinder 22, and is guided to the exhaust port 12 without being affected by the surrounding air flow, especially the draft resistance, so that the flue 23 is guided to the exhaust port 12 without being affected by the influence of the surrounding air flow, especially the draft resistance. The amount of fuel vaporized from the lamp wick 18 and the amount of air flowing from the air supply port 14 through the small hole 201L1 and the large hole 21& can be sufficiently provided. In particular, by curving the upper part of the flue 23 smoothly, the draft reduction can be avoided without increasing the flow resistance of the exhaust gas.

Further, a heat shield plate 26 is provided between the outer cylinder 22 covering the flue 23 and the housing 11 with a gap 27 interposed therebetween.
Overheating of the housing 11 is avoided by the heat dissipation and heat insulation effect of the air flowing through the casing 11 and the heat shielding effect of the heat shield plate 2e.

Therefore, not only the rear and side surfaces of the casing 11 but also the top surface can be maintained at a low temperature, making it possible to form a so-called cool-top combustor. Therefore, it is possible to prevent burns from occurring on the upper surface of the casing 11, or to prevent the risk of fire due to falling flammable materials. In addition, the upper surface of the casing 11 does not need to be made of a heat-resistant material such as enamel.
Like the other surface of 1, it can be coated with ordinary paint, and can be processed easily and inexpensively without any processing restrictions.

In addition, since a large air gap is not required between the flue 23 and the upper surface of the housing 11, the total height of the housing 11 only needs to be slightly higher than the upper end of the outer cylinder 22, allowing short-frame combustion while maintaining sufficient draft. It can be used as a container.

Therefore, stability against falling is good, and there is no need to make the pedestal 15 unnecessarily stiff. Particularly in the case where the combustion chamber 20 is flat, the front and rear thickness of the housing 11 is small, but sufficient stability can be maintained with the frame 16 of an appropriate size according to the thickness, making it thin and economical. It also has the advantage of being able to take advantage of the characteristics of the space.

By expanding the heat dissipation port 13 upward, radiant heat can also be obtained from the outer cylinder 22 surface of the side wall of the flue 23, which is effective heat for radiant heaters and dryers that convert combustion heat into radiant heat. It can be something that can be used.

Effects of the Invention As described above, the oil combustor of the present invention has a curved flue above the combustion chamber to open at the upper front of the casing, and a heat shield plate is provided between the flue and the casing. It is possible to provide a combustor that can obtain a sufficient amount of draft from the main body, has a one-cool top, has good stability, is easy to work, and can utilize heat effectively.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an oil combustor which is an embodiment of the present invention;
FIG. 2 is a vertical sectional view of the main part of a conventional oil combustor. 11... Housing, 18... Light wick, 20...
... Combustion chamber, 21 ... Red-hot part, 22 ...
... Outer cylinder, 23 ... Flue, 24 ... Secondary incandescent body, 26 ... - Heat shield plate. Name of agent: Patent attorney Toshio Nakao (1st person)
figure

Claims (3)

[Claims] (1) A tank fixed to the bottom of the housing, a lamp wick whose lower part is housed in the tank and can be moved up and down, a combustion chamber made of a perforated plate with the tip of the wick facing the bottom, and the outside of this combustion chamber. an outer cylinder that covers the combustion chamber and forms a flue above the combustion chamber; a heat shield plate provided between at least the housing and the outer cylinder; the upper part of the flue is curved; An oil burner with an opening near the front. (2) A part of the combustion chamber is made into a red-hot part with a large aperture ratio, and a secondary red-hot body made of a perforated plate is provided in the flue, and heat rays are transmitted through the red-hot part and the outer cylinder facing the secondary red-hot body. The oil combustor according to claim 1, wherein the oil combustor is made of a synthetic material. (3) The oil combustor according to claim 1 or 2, wherein the wick is flat and the combustion chamber is flat.