JPH0144889Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to an oil-burning appliance with a lifting wick.

(Prior Art) In general, an oil-burning appliance with a lifting lamp wick has a structure as shown in, for example, Japanese Utility Model Application Publication No. 56-42674,
That is, it has a configuration as shown in FIG. In FIG. 1, reference numeral 11 denotes a fuel tank, which is fixed on a stand 13 via a support member 12.
A cylindrical wick guide 14 is integrally erected from inside the fuel tank 11, and a lamp wick 15 is attached to the outer peripheral surface of the wick guide 14 so as to be vertically movable.
is a core holder 16 attached to its lower outer circumference.
The wick is raised and lowered via a wick lifting mechanism (not shown). A burner basket 17 is mounted on the upper part of the fuel tank 11 and a lamp wick 15 is connected to the outside of the wick guide 14.
The burner basket 17 has a fire pan 17a on the outer periphery of the upper end of the burner basket 17.
is formed. A wick guide cap 18 is integrally attached to the upper end of the wick guide 14, and its step-shaped outer periphery forms the above-mentioned fire pan 17a.
At the same time, the lamp wick 15 is guided.

Reference numeral 21 denotes a combustion tube, which is composed of an inner flame tube 22, an outer flame tube 23, and an outer flame tube 24, which are arranged concentrically and spaced apart from each other. The inner flame tube 22 and the outer flame tube 23 have a large number of ventilation holes 22a, 23a on their peripheral surfaces, and supply combustion air into the combustion chamber between the inner flame tube 22 and the outer flame tube 23. Further, the outer cylinder 24 consists of a lower metal cylinder 24a and an upper glass cylinder 24b,
The upper end of this glass cylinder 24b is connected to the upper end of the outer flame cylinder 23 via a fitting 25. A rectifying plate 27 is attached to the upper end of the inner flame tube 22 via a base plate 28, and the air inside the inner flame tube 22, which is discharged through a ventilation hole 28a provided in the base plate 28, is transferred to the inner flame tube 22.
2 and the outer flame tube 23 form the combustion chamber.

The lower end of the outer flame tube 23 is connected to the fire pan 17a.
The lower end of the inner flame tube 22 is supported on the outer periphery of the core guide cap 18,
During combustion, the lamp wick 15 rises and its upper end protrudes into the combustion tube 21.

(Problems to be solved by the invention) In the above configuration, if kerosene mixed with altered kerosene or foreign oil is used as fuel, the balance of combustion of kerosene between the inner flame tube 22 and the outer flame tube 23 will be affected. Collapse. That is, unlike when the temperature condition of the wick 15 is normal, the components that are difficult to volatilize in the degraded kerosene or kerosene mixed with different oils are present at the tip of the wick 15, the fire pan 17a, the outer periphery of the wick guide cap 18, and the outer flame. It accumulates in the form of tar at the lower end of the cylinder 23 and the lower end of the inner flame cylinder 22. This causes the following problems.

(1) Decreased heating capacity due to decreased kerosene vaporization.

(2) Deterioration of exhaust gas components (CO/CO ₂ , etc.).

(3) Unsmooth vertical movement of the wick due to solidification of the tip of the wick.

(4) As shown in FIG. 2, the lamp wick 15 and the wick guide cap 18 are stuck together due to the tar 31, which makes it impossible to lower the lamp wick.

Here, the failure in item (1) can be visually confirmed. It is possible to detect the disorder mentioned in (2) by detecting the odor, etc., and to eliminate it. The failure described in item (3) does not appear after a short period of combustion, but there are precursory phenomena that can prevent disasters from occurring.

However, the problem mentioned in item (4) occurs when using altered kerosene or kerosene mixed with different types of oil, as it burns for a shorter time than the solidification of the wick tip described in item (3). This is because the wick guide cap 18 side has a higher temperature than other parts, and tar is concentrated in the high temperature part of the inner surface of the lamp wick 15 that is in contact with it. In order to speed up the extinguishing time, many modern wick lifting devices are configured to lower the wick using a stored spring force when the wick rises.
In such a case, as shown in Fig. 2, the tar 3
If the wick 15 and the outer periphery of the wick guide cap 18 solidify due to 1, the stored spring force will not be able to lower the wick 15, and the wick 15 will not be able to be extinguished. It disappears.

An object of the present invention is to provide an oil-burning appliance that prevents the wick from sticking to the wick guide cap due to tar and does not cause problems such as the wick not being able to be lowered.

[Structure of the idea]

(Means for solving the problem) The present invention includes a cylindrical core guide, a burner basket provided concentrically on the outside of the core guide,
A fire pan is formed on the outer periphery of the upper end of the burner basket and supports the lower end of the outer flame tube of the combustion tube, and an outer peripheral receiving portion attached to the upper end of the wick guide and located at the same height as the flame tube supports the combustion tube. A wick guide cap that supports the lower end of the inner flame cylinder is attached so as to be able to move up and down between the wick guide and the burner basket.During combustion, the upper end is inserted into the combustion cylinder from above the outer periphery of the fire pan and the wick guide cap. In an oil-burning appliance equipped with a lamp wick that protrudes from the wick, the outer edge of the outer periphery receiving part of the wick guide cap is curved outward from the downwardly hanging part of the wick toward the inner peripheral surface of the wick. , and the difference in diameter between the outer periphery receiving part of the core guide cap and the downwardly hanging part is set in the range of 0.6 mm or more and 3 mm or less.

(Function) In the present invention, the difference in diameter between the outer peripheral receiving part of the core guide cap and the downwardly hanging part is set in the range of 0.6 mm or more and 3 mm or less.
If the diameter is less than 0.6 mm, that is, the radius is less than 0.3 mm, the wick will become impossible to lower due to the tar, and if the diameter is more than 3 mm, that is, the radius is less than 1.5 mm.
If this happens, it will be difficult to guide the lamp wick properly, and the tip of the lamp wick will come apart, or the lifting operation of the lamp wick will be hindered.

The wick guide cap, which is at a high temperature, comes into contact with the wick at the curved bulge on its outer periphery, and the temperature change of the wick at that part is reduced, so that kerosene mixed with degraded kerosene or foreign oil can be removed. Even when used, the amount of tar adhering between the inner circumferential surface of the wick and the wick guide cap is greatly reduced, and by setting the above-mentioned size range, the lowering operation of the wick can be ensured.

(Example) Hereinafter, an example of the present invention will be described with reference to FIG. This oil-burning appliance basically has the same structure as shown in FIG. 1, and corresponding parts are designated by the same reference numerals.

In FIG. 3, the lamp wick 15 is mounted between the wick guide 14 and the burner basket 17 so as to be able to move up and down, and the wick guide cap 18 provided at the upper end of the wick guide 14 has a fire pan of the burner basket 17. An outer peripheral receiving part 18a is formed at the same level as the part 17a,
The lamp wick 15 moves up and down while being guided by the outer edge of the outer peripheral receiving part 18a. In addition, the core guide cap 1
The outer edge of the outer peripheral receiving part 18a of No. 8 is curved outward from the downwardly hanging part 18b toward the inner peripheral surface of the lamp wick 15. I am in contact with it. The difference in diameter between the outer peripheral receiving part 18a and the downwardly hanging part 18b of the core guide cap 18 is set in a range of 0.6 mm or more and 3 mm or less. According to experiments, if the difference in diameter is 0.6 mm or less, that is, 0.3 mm or less in radius, this will result in the same phenomenon as the conventional one shown in FIG. In addition, if the diameter exceeds 0.3 mm, that is, the radius exceeds 1.5 mm, it becomes difficult to guide the lamp wick 15 properly, and the tip of the lamp wick 15 may fall apart or the lamp wick 15 may rise. This is because it interferes with operation.

With the above configuration, the wick guide cap 18, which is at a high temperature, comes into contact with the lamp wick 15 at the curved bulge in the outer peripheral receiving part 18a, and the temperature change of the lamp wick 15 at that part is reduced. ,
Even if you use kerosene mixed with altered kerosene or different types of oil,
As shown in FIG. 3, the amount of tar 31 adhering between the inner peripheral surface of the lamp wick 15 and the wick guide cap 18 is significantly reduced compared to the conventional case shown in FIG. By setting the size range, it is possible to fully lower the lamp wick 15 using the stored spring force, and it is possible to extinguish the lamp reliably.

[Effect of idea]

According to the present invention, the outer edge of the outer periphery receiving part in the wick guide cap that guides the upper end of the lamp wick is curved outward from the downward hanging part thereof, and the outer periphery of the wick guide cap is By setting the difference in diameter between the receiving part and the downward hanging part within the range of 0.6 mm or more and 3 mm or less, the wick guide cap, which is at high temperature, can be heated to the lamp wick by the curved bulge on the outer periphery of the cap. Since the temperature change of the wick in that area is reduced, the amount of tar adhering between the inner circumference of the wick and the outer circumference of the wick guide cap is significantly reduced compared to conventional methods, and By setting the above dimension range, even if the wick is lowered by the stored spring force, it can be sufficiently lowered, and unlike conventional methods, it will not become impossible to extinguish, and safety can be improved. .

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conventional oil-burning appliance, Fig. 2 is an enlarged sectional view showing the main parts of Fig. 1, and Fig. 3 is an enlarged view showing the main parts of an embodiment of the oil-burning apparatus according to the present invention. FIG. 14... Wick guide, 15... Lamp wick, 17... Burner basket, 17a... Fire pan, 18... Wick guide cap, 18a... Outer periphery receiver, 18b...
... hanging part, 21 ... combustion tube, 22 ... inner flame tube, 2
3... Outer flame tube.

Claims (1)

[Claims for Utility Model Registration] A cylindrical core guide and a bar provided concentrically on the outside of this core guide.
a burner basket that is formed on the outer periphery of the upper end of the burner basket and supports the lower end of the outer flame tube of the combustion tube; A wick guide cap that supports the lower end of the inner flame tube of the combustion tube, and a wick guide cap that is vertically movable between the wick guide and the burner basket. In an oil-burning appliance equipped with a lamp wick protruding into the combustion cylinder, An oil-burning appliance characterized in that the core guide cap has a bulging part, and the difference in diameter between the outer periphery receiving part of the core guide cap and the downwardly hanging part is set in the range of 0.6 mm or more and 3 mm or less.