JPS631492B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an oil combustor using a wick.

A conventional oil combustor is constructed by attaching a metal fitting C to the outer periphery of a wick guide tube B that guides the lamp wick A so that it can move up and down, and a heat shield plate D is attached to this metal fitting C, as shown in Fig. 3. If the radiant heat from the combustion tube E on the core guide tube B is blocked by a heat shield plate C, or if a small hole F is provided in the core guide tube wall to shorten the extinguishing time, this small The gas leaking from the hole F is connected to the combustion tube E.
The flame was kept so that it would not catch fire. However, since the heat shield plate D is attached to the outer periphery of the core guide cylinder A through the metal fitting C, the number of parts increases accordingly, and the number of production steps also increases, resulting in a problem of high cost.

The present invention was created in view of these problems, and its main purpose is to reduce costs by reducing the number of parts and production man-hours.

In order to achieve such an object, in the present invention, the outer circumferential edge of the fire pan at the upper part of the core guide tube is extended outward, and a heat shield plate is attached to this extended portion.

An example of this will be explained below with reference to the drawings.
1 is a tank for storing petroleum; 2 is a cylindrical ventilation tube vertically installed from the center of the bottom of the tank 1; 3 is a cylindrical ventilation tube installed on the tank 1 so as to form a lamp vertical movement space 4 between the ventilation tube 2 and the ventilation tube 2; It is a covered cylindrical core guide tube, and consists of three members 3a, 3b, and 3c, and member 3a forms a fire pan 5 on its upper part, and the periphery of this fire pan 5 is raised one step to extend outward. It has been done. Further, the tip of this extended portion 5a hangs downward and overlaps with the member 3b to form an air chamber 6. Furthermore, there is a slit 7 between the members 3a and 3b.
is placed between the lamp wick vertical movement space 4 and the air chamber 6. Reference numeral 8 denotes a through hole provided in the wall of the air chamber, and reference numeral 9 denotes a cylindrical lamp wick inserted into the lamp vertical movement space 4, which is configured to be vertically movable by a well-known wick vertical mechanism (not shown). The tip of the lead when descending is set to be located below the slit 7. Reference numeral 10 denotes a combustion cylinder having a triple cylindrical structure, which is placed on the fire pan of the core guide cylinder 3, and has a large number of pores 11. Reference numeral 12 denotes a heat shield plate placed on the extension portion 5a of the fire pan 5, and fixed by suitable means such as welding. A rib 13 is lowered on the heat shield plate toward the extended portion 5a, and a slight gap 14 is formed between the heat shield plate and the extended portion 5a through which air can circulate. 15
A convection cylinder is installed on the tank 1 so as to surround the outside of the core guide cylinder 3 and the combustion cylinder 10, and a number of air holes 16 are formed in the lower part.

In the above configuration, this combustor has an extension part 5a integrally formed on the fire pan 5, and a heat shield plate 1 on the extension part 5a.
2 is fixed, there is no need for a heat shield plate mounting bracket as in the conventional case, and the number of parts and production man-hours can be reduced accordingly. Furthermore, since a small gap 14 is formed between the heat shield plate 12 and the extension portion 5a, air can be efficiently supplied to the vicinity of the wick at the bottom of the combustion tube, which has the advantage of improving combustion performance. In addition, since an air chamber 6 communicating with the lamp wick vertical movement space 4 is formed using the member 3a that fixes the heat shield plate 12, when the appliance falls down and extinguishes the lamp (at this time, the lamp wick suddenly collapses into the lamp wick vertical movement space 4). Petroleum vapor that continues to evaporate slightly from the tip of the wick 9 (which descends inwards and downwards) flows into this air chamber 6, mixes with the air, and combusts rapidly (explosive combustion), and its momentum causes combustion near the fire pan. Blow out. In other words, there is also the advantage that the extinguishing time is shortened.

As is clear from the above description of the embodiments, the present invention has the following features:
Since the outer peripheral edge of the fire pan is extended outward and a heat shield plate is attached to this extended part, the number of man-hours required for attaching the heat shield plate and fixing it to the core guide tube can be reduced, resulting in cost reduction. In addition, since the extension portion is flat, the heat shield plate can be attached easily and reliably. Moreover, since a gap is formed between the heat shield plate and the extended flat part of the fire pan, air is supplied to the vicinity of the lamp wick by the draft generated in the combustion section, which has the effect of improving combustion performance. .

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an oil combustor according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view of a main part thereof, and FIG. 3 is a sectional view of a conventional example. 3... Core guide tube, 4... Light wick vertical movement space, 5...
...Grill, 5a... Extension, 6... Air chamber, 7...
Slit, 9...Light wick, 10...Combustion tube, 12...
...Heat shield plate, 14...Gap.

Claims (1)

[Scope of Claims] 1. Consisting of a wick guide tube that guides the lamp wick in a vertically movable manner, and a combustion tube placed on a fire pan above the wick guide tube, the fire pan has its outer peripheral edge extended outward. At the same time, a heat shield plate is attached to the extended flat part, and this heat shield plate is placed on the extended flat part of the fire pan with a gap that allows air to flow toward the combustion cylinder side. Oil burner installed in. 2. The petroleum oil recited in claim 1 or 2, wherein the fire pan has its extending portion hanging downward to form an air chamber communicating with the wick vertical movement space on the outer periphery of the wick guide tube. combustor.