JPS6196310A - Liquid fuel combustion device - Google Patents

Abstract

PURPOSE:To prevent deformation of a combustion cylinder and a fire tray unit and prevent generation of abnormal combustion by a method wherein an engaging part, engaging with the lower end of a combustion cylinder, is provided at the fire tray unit of a wicking type liquid fuel combustion device. CONSTITUTION:A wick 11 is ascend and descend by pinching of the fire tray unit 12. The engaging part 13, constituted with U-shape groove, is provided at the fire tray unit 12. The lower end of the combustion cylinder 15 having many holes 14 is engaged with the above mentioned U-shape groove and the combustion cylinder 15 is accommodated into the outer cylinder 16. The combustion cylinder 15 is heated and the end thereof is apt to crook by stress of heat, upon combustion, however, the crookness is prevented by a guide of the engaging part 13 and the engaging part has no clearance between the fire tray 12, therefore, the abnormal combustion due to flowing of excess air through the clearance may be prevented.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a wick type liquid fuel combustion device.

Conventional technology Light wick-type liquid twisting and fuel combustion devices are widely used in kerosene stoves, stoves, etc.;
As shown in Publication No. 83, the configuration was as shown in FIG. 4.

That is, a combustion tube 4 having a large number of air holes 3 is placed on a fire pan 2 that holds a lamp wick 1, and the lower end of the combustion tube 4 and the fire pan 2 are in line contact.

Problems to be Solved by the Invention According to the conventional configuration described above, the fire pan 2 and the combustion tube 4 are in line contact with each other on the metal surface, and a slight deformation or scratch can easily cause a gap between the two. If a gap is created here, excess air will flow into the vicinity of the lamp wick 1, increasing the amount of fuel vaporized and preventing complete combustion within the combustion tube 4, resulting in unburned gas, soot, odor, or carbon monoxide ( CO), etc., which is unpleasant and harmful, and there is also a significant risk of causing a fire. In a so-called line burner in which the lamp wick 1 is flat and the combustion tube 4 and surrounding outer tube 6 are flat, the fire pan 2 and combustion tube 4 are easily deformed due to thermal expansion, processing distortion, or external impact. , the above problems tend to occur frequently.

Means for Solving the Problems In order to eliminate the above-mentioned conventional drawbacks, the present invention provides the fire pan with a fitting portion that fits into the lower end of the combustion cylinder.

Function The above means has the effect of preventing deformation of the combustion tube and the fire pan, and by completely eliminating the gap between the lower end of the combustion tube and the fire pan, abnormal combustion and the generation of odors, soot, CO, etc. caused by it are prevented. can be prevented.

Embodiment One embodiment of the present invention will be described below based on the drawings. In FIGS. 1 and 2, the lamp wick 11 is held by the fire pan 12 and moves up and down. The fire pan 12 is provided with a fitting part 13 formed of a U-shaped groove. A combustion tube 16 having a large number of air holes 14 is fitted at its lower end into the U-shaped groove, and the combustion tube 15 is housed in the outer tube 16 . 17 is a glass plate arranged in front of the outer cylinder 16, 18 is a tank, 19
is a knob for moving the lamp wick 11 up and down. Here, the fitting portion 13 prevents vertical movement of the combustion cylinder 16, and
It is preferable to minimize the sliding clearance so that the gap is as small as possible. Further, the depth of the groove is not particularly limited as long as a gap does not occur between the groove and the lower end of the combustion tube 15.

In the above configuration, the fuel vaporized from the lamp wick 11 mixes with the air flowing in through the air hole 14 and burns while rising inside the combustion tube 15 and is discharged from above. During combustion, the combustion tube 16 is heated to a high temperature of 600 to 800'C, so a stress is applied to the lower end of the combustion tube 16, making it susceptible to bending. However, against the stress in the thickness direction of the combustion tube 15, the guide of the fitting part prevents the combustion tube from curving, and against the stress in the vertical direction, even if the lower end of the combustion tube 16 is curved, the combustion tube Since the lower end of 15 slides along the fitting part 13, no gap is created between it and the fire pan part 12.

Therefore, it is possible to prevent abnormal combustion caused by excessive air flowing in here.

In particular, in a so-called line burner in which a flat lamp wick 11 is held between linear fire pans 12 and a flat combustion tube 15 is installed as in this embodiment, the lower edge of the fire pan 12 or the combustion tube 15 is horizontal. The fitting part 13 has an extremely large gap-preventing effect because it is difficult to maintain its rigidity and is easily bent due to thermal deformation.

FIG. 3 shows another embodiment of the present invention, in which the combustion tube 1
A fitting part 13 configured as a lip-like unevenness is provided on the side surface of the lower end of the fire plate part 5 and the fire pan part 12 in contact therewith.

The fitting part 13 having such a configuration has the same effect as described above, that is, it prevents deformation of the fire pan 12 and the lower end of the combustion tube 16, and also achieves the same effect by crimping and fixing the fire pan 12 and the lower end of the combustion tube 1ε. It is possible to realize a gap prevention effect more than that described above.

In addition, especially in line burners, the combustion tube 15 tends to fall over when the combustion device main body is moved or due to contact with a human body, but in the fitting part 13 as shown in FIG. The crimping and fixing of the lower end of the cylinder 16 and the fire pan 12 also has the effect of preventing it from falling over. The uneven shape of the fitting portion can be implemented in various shapes other than the lip shape, and is not particularly limited.

Effects of the Invention As described above, the liquid fuel combustion device of the present invention prevents thermal deformation of the fire pan and the bottom end of the combustion cylinder by providing a fitting part on the fire pan and the bottom end of the combustion cylinder and fitting them together. This prevents gaps from forming between the cylinder and the combustion cylinder and maintains stable and safe combustion. In addition, especially in line burners, the effect of preventing the combustion cylinder from falling is remarkable.

[Brief explanation of the drawing]

FIG. 1 is an enlarged cross-sectional view of a main part of a liquid fuel combustion device showing one embodiment of the present invention, FIG. 2 is a partially cutaway side view of the same liquid fuel combustion device, and FIG. 3 is another embodiment of the present invention. FIG. 4 is an enlarged sectional view of a main part in an example, and FIG. 4 is a sectional view of a main part of a conventional liquid fuel combustion device. 11...Light wick, 12...Grill part, 13
......Fitting part, 14...Air hole, 16.
... Combustion tube. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 11. -1 Artwork 2 Figure 3 Figure 114 Figure 1%%' 1

Claims (5)

[Claims] (1) It has a fire pan that holds a lamp wick that moves up and down, a combustion tube made of a perforated plate that faces the tip of the wick, and an outer cylinder that houses the combustion tube, and the fire pan has a lower end of the combustion tube. A liquid fuel combustion device provided with a fitting part that fits together. (2) The liquid fuel combustion device according to claim 1, wherein the wick is flat and the combustion tube is flat. (3) The liquid fuel combustion device according to claim 1 or 2, wherein the fitting portion is a U-shaped groove. (4) The liquid fuel combustion device according to claim 1 or 2, wherein the fitting portion has an uneven shape that fits into the side surface of the lower end of the combustion cylinder. (5) The liquid fuel combustion device according to claim 4, wherein the side surface of the lower end of the combustion cylinder is provided with a fitting portion having an uneven shape that fits into a fitting portion provided on the fire pan.