JPS6312209B2 - - Google Patents

Description

[Detailed description of the invention] Industrial applications The present invention relates to an oil combustion device.

Structure of the conventional example and its problems As shown in FIG. 3, the wick guide tube of the conventional kerosene stove is formed of an outer core guide tube 31 and an inner core guide tube 32, with a lamp wick 36 located between them. The outer core guide cylinder 31 is formed of three parts 31a, 31b, and 31c, and has a slit opening 33 and a fire extinguishing chamber 34 formed around its outer periphery. Further, a large number of fire extinguishing holes 35 are formed in the peripheral wall of the fire extinguishing chamber 34 for communicating the inside of the fire extinguishing chamber 34 with outside air. According to this configuration, during normal combustion, kerosene vapor from the side of the lamp wick 36 passes through the slit opening 33 into the fire extinguishing chamber 3.
The kerosene flows into the interior of the fire extinguishing chamber 34, is cooled by the outer core guide tube 31, and is deposited as dew condensed kerosene in the lower part of the fire extinguishing chamber 34. Therefore, during normal fire extinguishing and falling fire extinguishing, the kerosene vapor and dew condensed kerosene in the fire extinguishing chamber 34 have an effect, prolonging the extinguishing time. In addition, in overturning fire extinguishing, there were many problems such as the condensed kerosene remaining in the fire extinguishing chamber 34 flowing out of the outer core guide cylinder through the fire extinguishing hole 35, causing the flame to break out outside the jig and causing a flame.

Purpose of the Invention The present invention was made in view of the above-mentioned problems, and an object of the present invention is to extinguish a fire reliably and safely by having a structure that prevents condensed kerosene from accumulating in a fire extinguishing chamber.

Structure of the Invention In order to achieve the above object, the present invention includes a vertically movable lamp wick that sucks up fuel in a tank, and a guide tube that is located on the side of the lamp wick and guides the vertical movement of the lamp wick. The guide tube is provided with an opening that is closed by the wick when the wick is raised and opened when the wick is lowered, and a ring-shaped fire extinguishing chamber is provided on the opposite side of the wick in communication with this opening. The fire extinguishing chamber is formed by fitting at least two cylindrical members, and each of the cylindrical members is provided with a convex portion, and the convex portions are brought into contact with each other so that the fire extinguishing chamber and the tank are connected between the convex portions. A groove is formed to communicate with the

DESCRIPTION OF EMBODIMENTS One embodiment will be described below with reference to FIGS. 1 and 2. 1 is a tank for storing kerosene, 2 and 3 are cylindrical core guide tubes installed vertically in this tank 1, and in this embodiment, the outer core guide tube 2 is made up of three tube parts 2a, 2b, 2.
c to form a slit opening 4 and a fire extinguishing chamber 5 on its outer periphery. Further, a large number of fire extinguishing holes 6 are formed in the peripheral wall of the fire extinguishing chamber 5 for communicating the inside of the fire extinguishing chamber 5 with outside air. 7 is a cylindrical lamp wick placed between the wick guide tubes 2 and 3;
The wick can be moved up and down by a well-known up-and-down mechanism (not shown), and when extinguishing the wick, it descends to open the slit opening 4, but when burning, it rises and closes the slit opening 4. It's becoming like that. The three parts 2a, 2b, 2c of the outer core guide cylinder 2 have protrusions 8, 9, 10 for positioning on the side walls, and grooves 11 are provided in the protrusions 9, 10.
b and 2c are press-fitted, and the fire extinguishing chamber 5 and the tank 1 are communicated via the communication path A. Reference numeral 12 denotes a shock absorbing mounting base, which is mounted using the convex portion 8 of the outer core guide tube 2 (width B>B').

In the above configuration, when burned, the lamp wick 7 receives heat from the chimney T, and vaporized gas of kerosene is generated from the surface of the lamp wick 7. At this time, vaporized gas from the side wall of the lamp wick 7 enters the fire extinguishing chamber 5 through the slit opening 4. Then, it is cooled by the wall surfaces of 2a and 2c of the outer core guide tubes 2 and becomes dew-condensed kerosene, which drips onto the bottom of the fire extinguishing chamber 5, but the condensation occurs due to the connection path A formed by the grooves 11 of the protrusions 8 and 9 of the outer core guide tube 2. Since the kerosene is returned to the tank 1, there is no accumulation of dew condensed kerosene in the fire extinguishing room 5, and stable fire extinguishing performance and overturning fire extinguishing performance can always be obtained. In addition, since the convex portions 8, 9, and 10 of the outer core guide cylinder 2 are used for positioning, rotation can be prevented during press-fitting, and the holes 13 and 13a that pass through the core upper and lower shafts can be prevented from misaligning, and the shock-absorbing mounting base can be installed. Dimensional variations are eliminated, and not only fire extinguishing performance but also assembly workability can be improved.

Effects of the Invention According to the present invention, since the condensed kerosene in the fire extinguishing chamber is always returned to the tank, there is no condensed kerosene in the fire extinguishing chamber, and stable fire extinguishing performance can be obtained in normal fire extinguishing, vibration extinguishing, and fall extinguishing. Furthermore, when fitting at least two cylindrical members forming a fire extinguishing chamber,
Since the convex portions of each cylindrical member for forming the oil return groove come into contact with each other, this convex portion can be used for positioning, and it is possible to prevent rotation during press-fitting, and for example, to prevent rotation of each cylinder. If the shaped member has a hole through which the upper and lower core shafts pass, there will be no variation such as misalignment of the holes, and not only the fire extinguishing performance but also the ease of assembly can be improved.

[Brief explanation of the drawing]

Fig. 1a is a sectional view of an oil combustion device according to an embodiment of the present invention, Fig. 1b is a sectional view taken along line b-b' of Fig. 1a, and Fig. 2 is a configuration diagram of the outer core guide cylinder. FIG. 3 is a sectional view showing a conventional example. 2... Outer core guide tube, 3... Inner core guide tube, 5...
Fire extinguishing room, 6... Fire extinguishing hole, 8, 9... Protrusion, 11...
...Groove, A...Communication path.

Claims (1)

[Claims] 1. A lamp wick that is movable up and down to suck up fuel in a tank, and a guide tube that is located on the side of this wick and guides the vertical movement of the wick, and the guide tube is provided with a lamp wick that can be moved up and down when the wick is raised. An opening is provided which is closed by the wick and opened when the wick is lowered, and a ring-shaped fire extinguishing chamber is provided on the opposite side of the wick in communication with this opening, and this extinguishing chamber is formed by fitting at least two cylindrical members. An oil combustion device in which each cylindrical member is provided with a convex portion, the convex portions are brought into contact with each other, and a groove is formed between the convex portions to communicate the fire extinguishing chamber and the tank.