JPS6235562B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Technical Field> The present invention relates to a burner for an oil stove in which the outer periphery of an outer flame cylinder is surrounded by a transparent cylinder.

<Prior art> The burner of this type of kerosene stove was developed in 1974.
As shown in Publication No. 12184, etc., there are small diameter holes in the lower part of the outer flame tube, and large diameter holes in the middle and upper part of the outer flame tube, so that the air External air controlled by the air control unit flows forcefully between the inner and outer flame cylinders from the small hole corresponding to the control unit, causing abnormal combustion and causing heat to move downward.
There were cases where the temperature at the bottom of the outer flame cylinder rose and the amount of kerosene evaporated became abnormally large. Therefore, the flame grows, etc.
The drawback was that combustion became unstable.

<Purpose> The present invention was made to eliminate the above-mentioned drawbacks, and the outer flame cylinder portion corresponding to the upper part of the outer cylinder is made into an adjustment part without an air supply hole.

<Example> An example of the present invention will be described below with reference to the drawings.

FIG. 1 is a partially cutaway perspective view of a burner of the present invention, FIG. 2 is a simplified sectional view, and FIG. 3 is a side view with a main part cut away.

In the figure, 1 is an inner flame tube with a large number of air supply holes 18, 2 is an outer flame tube, and 3 is an outer tube that surrounds the outer circumference of the lower part of the outer flame tube 2. are fixed concentrically. Reference numeral 5 denotes a transparent cylinder made of glass that is fitted onto the upper flange portion 6 of the outer cylinder 3 and surrounds the upper outer periphery of the outer flame cylinder 2. Reference numeral 7 denotes a donut-shaped glass presser fitted between the upper end of the transparent body 5 and the upper end of the outer flame tube 2, and is provided with air vents 8, . . . as shown in FIG. 9 is an upper vent plate, 10 is an upper plate, and 11 is an incandescent coil surrounded by the upper end of the upper vent plate, and between the outer periphery of the incandescent coil and the upper end of the outer flame cylinder 2, there is a small amount of heat as shown in FIG. A gap 12 is provided.

The outer flame tube 2 has a large number of air supply holes, but as shown in FIG. 3, the upper air supply hole 13 has a larger diameter than the lower air supply hole 14. The upper part has a smaller heat capacity and is more likely to become red hot. Furthermore, as shown in FIG. 2, the outer flame tube 2 has an inwardly directed bead 15 formed at its upper end, so that the amount of heat generated during combustion rapidly spreads around the outer flame tube 2 without escaping to the upper part, thereby preventing uneven red heat. It is designed to prevent Moreover, the strength of the outer flame tube 2 is increased, the roundness is stabilized, and the air supply balance is improved.

A shown in FIG. 3 is a feature of the present invention, and the air supply hole of the outer flame tube 2 corresponds to the upper flange portion 6 of the outer tube 3 (i.e., the connecting portion between the transparent tube 5 and the outer tube 3). This is an adjustment section that does not have a

The air that has flowed in from between the outer cylinder 3 and the lower part of the outer flame cylinder 2 is divided into two types: one that flows in from the lower air supply hole 14 between the outer flame cylinders 1 and 2, and the other that rises along the outer cylinder 3. Although the air is separated, the air rising along the outer cylinder 3 is controlled by the upper flange portion 6 and tends to flow strongly between the inner and outer flame cylinders 1 and 2. However, since that part of the outer flame tube 2 is the adjustment part A and there is no air supply hole, the flow rate increases and rises between the adjustment part A and the flange part 6, and the flow between the outer flame tube 2 and the transparent cylinder 5 increases. Reduce the pressure between.

Therefore, the parts of the inner and outer flame tubes where outside air strongly flows in are not affected by the outside air, and the combustion there does not become abnormal, and the combustion caused by new air flowing there is suppressed and the outer flame tube 2 is not affected by the outside air. The heat in the upper red-hot part B of is prevented from moving downward. Therefore, a temperature rise in the lower part of the outer flame tube 2 is prevented, and the amount of evaporation of kerosene does not become abnormally large, thereby stabilizing combustion.

In the air supply hole 14 in the part corresponding to the outer cylinder 3,
As shown in FIG. 3, by increasing the number of perforations in the middle part, sufficient air can be sent in at the time of ignition, and the outer flame tube 2 becomes red hot more quickly, thereby suppressing the generation of odor.

As shown in FIG. 6a, the upper flange portion 6 of the outer cylinder 3 has an upright piece 20 inclined toward the inner surface of the transparent body 5, so that air 21 flows smoothly and combustion is stabilized. If the vertical piece 20 stands vertically as shown in FIG. 6b, turbulence will occur in the air 21 as shown in the figure, making combustion unstable.

Further, according to the burner of the above-described embodiment, since the gap 12 is provided between the red-hot coil 11 and the upper end of the outer flame tube 2, the degree to which the combustion gas rising from below is cooled by the coil 11 is reduced. This reduces the amount of waste gas generated, and also suppresses the flame from spreading to the top of the burner. Furthermore, since the glass holder 7 is provided with an air vent 8, the air pressure from inside the inner flame tube 1 and the air pressure from the outside of the outer flame tube 2 are balanced, as shown in FIG. can be prevented. If the glass holder 7 does not have an air vent 8, the pressure of the air 21 escaping from the outside of the outer flame tube 2 to the incandescent coil 11 side will be strong, as shown in FIG. The upper part of the flame tube 2 becomes dark and uneven red heat occurs.

As shown in FIG. 5, if the perforation pitch of the air supply holes 18 in the portion of the inner flame tube 1 corresponding to the transparent tube 5 is increased only in the middle part, the amount of air supplied increases and the red-hot temperature of the red-hot part B of the outer flame tube 2 increases. The higher the value, the higher the red-hot effect becomes. Further, by providing the bead 19 at the upper part of the inner flame tube 1, the amount of heat generated during combustion is difficult to escape to the upper part, and the red-hot temperature of the outer flame tube 2 can be made higher.

Furthermore, since a plurality of beads 16 are formed outwardly in the portion of the outer flame cylinder 2 corresponding to the outer cylinder 3,
Outer flame tube 2 and outer tube 3, which has good centricity and is important for combustion.
The distance between the inner flame cylinder 1 and the inner flame cylinder 1 is always constant, the balance of air inflow is stabilized, and uneven combustion is eliminated. Also, this bead 16 balances the air flowing in from the inner flame cylinder 1 and the air flowing in from the outer cylinder 3 side. In particular, by changing the height of the bead 16, the amount of air flowing in from the outer cylinder 3 can be easily adjusted. can be adjusted to

In addition, in FIG. 2, if the bead 16 is provided inside as shown by the dotted line, the same effect as when the gap in the combustion section is made small can be obtained, and the amount of evaporation of kerosene can be freely changed within a certain range. Further, even if a bead is provided in the portion of the outer flame cylinder 2 facing the transparent body 5, the above-mentioned effect can be obtained to some extent.

<Effects> As mentioned above, according to the present invention, since the adjustment part without air supply holes is formed in the outer flame cylinder part corresponding to the flange part of the outer cylinder, there is no adverse effect on combustion, and combustion is stabilized. do.

[Brief explanation of the drawing]

Fig. 1 is a cutaway perspective view of the main parts of the burner of the present invention;
The figure is a simplified sectional view, FIG. 3 is a sectional side view of the main part, FIG. 4 is a perspective view of the glass presser, FIG. 5 is a sectional side view of the main part of another embodiment, and FIGS. 6 a, b, 7th
Figures a and b are explanatory diagrams each illustrating the operation of the burner of the present invention. Code, 1: Inner flame tube, 2: Outer flame tube, 3: Outer tube,
5: Transparent body, 13, 14, 18: Air supply hole, A: Adjustment section.

Claims (1)

[Scope of Claims] 1. An inner flame tube having a large number of air supply holes, an outer flame tube made of a single plate having a large number of air supply holes, an outer flame tube surrounded by the outer periphery of the lower part of the outer flame tube, In a burner comprising a heat-resistant transparent cylinder placed on an upper flange portion formed inwardly at the upper part of the outer cylinder and surrounding the upper outer periphery of the outer flame cylinder, the upper part of the outer flame cylinder corresponds to the transparent cylinder. air supply hole,
A burner for an kerosene stove, which is formed larger than an air supply hole in a lower part of an outer flame cylinder corresponding to the outer cylinder, and in which a part of the outer flame cylinder corresponding to an upper flange part of the outer cylinder is an adjustment part without an air supply hole.