JPH0354321Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a liquid fuel combustor in which a combustion wick moves up and down.

<Prior Art> A conventional means for fitting the core guide tube 1 and the fuel tank 2 is shown in FIGS. 3 and 4. First, the fitting means shown in FIG. 3 engages the bent portion 3 formed by bending the lower end edge of the core guide tube 1 upward with the engaging portion 5 formed on the bottom plate 4 of the fuel tank 2, and then swages it. It is necessary to apply two types of sealant to the bent part 3,
Further, after the above-mentioned double seaming (double seamer), both parts are caulked, which increases the number of steps and increases the cost.

In addition, in the case shown in FIG. 4, a sealant is applied to the upper circumference of the support tube 6 formed on the bottom plate 4, and the core guide tube 1 is externally press-fitted therein. Although the number is smaller than the former, it is necessary to manage the dimensional accuracy when fitting the two, it is necessary to apply a sealant, and the reliability over time (liquid fuel In addition, the core guide tube 1 wobbles during cleaning and the concentric circle with the core outer tube fitted outside the core guide tube 1 is distorted, causing problems in raising and lowering the core. Things were also hot.

<Purpose> Therefore, the present invention aims to reduce costs and provide a liquid fuel combustor such as an kerosene stove in which the wick guide tube can serve as a reliable holding structure.

<Example> Hereinafter, an example of the present invention will be described based on FIGS. 1 and 2. A liquid fuel combustor such as a kerosene stove according to the present invention has a bottom plate 8 of a fuel tank 7 that stores liquid fuel. A support cylinder 9 is formed in a part of the
A wick guide tube 1 having a first screw 10 carved on the lower end peripheral edge of the support tube 9 and guiding the combustion wick 11 in a vertically movable manner.
A second screw 10a is formed on the lower end circumferential surface of the core guide tube 12, and the core guide tube 12 is fitted into the support tube 9.
The second screw 10a is the first screw 1 of the support tube 9.
0 screwed together.

To explain the general structure of a liquid fuel combustor such as a general kerosene stove, the fuel tank 7 is placed and fixed on a base 13 as shown in FIG. A cylinder 12 is provided, and the combustion wick 11 is fitted onto the wick guide cylinder and moves up and down.Furthermore, an outer wick cylinder 14 which is fitted onto the combustion wick 11 is fixed to the tank 7. 14
A flame shielding plate 15 for preventing flames from moving toward the fuel tank 7 is mounted on the flame shielding plate 15 , and a combustion tube 16 passes through a large diameter hole 15 a formed in the flame shielding plate 15 to connect the combustion tube 16 to the core outer tube 14 . will be placed on.

The internal parts of the kerosene heater having the schematic structure shown above are housed in the outer casing 17. 7A is a refueling tank that supplies liquid fuel into the fuel tank 7; 18 is an adjustment knob that adjusts the amount of the combustion wick 11 coming out to the outside; 19 is a fire extinguishing button; 20 is a level; 21 is the outer casing 17. It is a handle formed in

The support tube 9 and the core guide tube 12 are partially protruded as a convex portion or a concave portion, and the convex portion and the concave portion are screws 10, 10a, and the convex portion as the first screw 10 is They are formed on the outer circumferential surface of the support tube 9 at two locations, upper and lower, at 180° intervals at the same height, and are inclined at a constant angle θ. Furthermore, recesses serving as the second screws 10a are formed on the inner surface of the core guide tube 12 at relative numbers and positions at 180° intervals relative to the first screws 10. A fuel reservoir 22 is formed at the lower part of the outer periphery of the support tube 9 to make the combustion wick 11 more effective at sucking up fuel.
23 is an air intake hole for taking in combustion air; 24 is an upper edge of the support tube 9 and the core guide tube 12;
It is a sealant interposed between the inner surface of the

Next, the assembly process will be described. Unless there is a particular inconvenience in the process, the core guide tube 12 is press-fitted into the support tube 9 while being rotated (it may be press-fitted without being rotated). Then, just before the core guide cylinder 12 reaches the lower part of the fuel reservoir 22 of the bottom plate 8, the first screw 10 and the second screw 10a start to be screwed together, and when they are further rotated and press-fitted, they are completely fitted. Therefore, the core guide tube 12 is reliably held on the support tube 9. A sealant 24 is applied to the upper edge of the support tube 9 as required. Note that the rotation direction is the direction in which the first screw 10 and the second screw 10a are inclined. Therefore, although the first screw 10 and the second screw 10a are inclined to the left in the present invention, they may be inclined to the right.

In addition, in the present invention, the first screw 10 and the second screw 10
Although a is provided at 180° intervals, they may be provided at 90° intervals, but there is no need to provide them in large numbers.

<Effects> As is clear from the above description, the present invention includes a support cylinder formed in a part of the bottom plate of a fuel tank that stores liquid fuel, a first screw carved in the lower end peripheral part of the support cylinder, A second screw is formed at the lower end periphery of the wick guide tube that guides the combustion wick up and down, and the wick guide tube is fitted into the support tube, and the second screw is connected to the first screw of the support tube. The present invention relates to a liquid fuel combustor characterized by being screwed together.

Therefore, according to the present invention, it is possible to reduce the number of steps for assembling the support tube and the core guide tube, and to provide a liquid fuel combustor such as a kerosene stove that can securely hold the core guide tube. be.

[Brief explanation of drawings]

Figure 1a is a sectional view showing the assembly process in the embodiment of the present invention, Figure 1b is a sectional view after fitting, Figure 1c is a sectional view showing the fitted state of the first screw and the second screw, and Figure 1c is a sectional view showing the fitted state of the first screw and the second screw. Figure 2a is a perspective view of a typical kerosene stove.
Figure b is an exploded perspective view of its internal parts, Figure 3 a is a sectional view showing the assembly process of a conventional kerosene stove, Figure b is a sectional view after fitting, Figure 4 a is another conventional example. Figure b is a cross-sectional view of the assembly process after fitting. 7: Fuel tank, 8: Low plate, 9: Support tube, 1
0: first screw, 10a: second screw, 11: combustion wick, 12: wick guide tube.

Claims (1)

[Scope of utility model registration request] A support cylinder is formed in a part of the bottom plate of the fuel tank that stores liquid fuel, a first screw is carved in the lower end peripheral edge of the support cylinder, and the lower end peripheral surface of the wick guide cylinder that guides the combustion wick to move up and down. A liquid fuel combustor, characterized in that a second thread is formed in the core guide tube, the core guide tube is fitted into the support tube, and the second screw is screwed into the first screw of the support tube.