JPS6210505A - Petroleum combustion device - Google Patents

Abstract

PURPOSE:To make radiation heat amount sufficiently large and maintain complete combustion by arranging punched plates in such a manner that edge parts of punched plates are folded to a combustion chamber side and two parallel folded edges are installed with half pitch lag not to align partitioned half holes locating at folded edge parts. CONSTITUTION:Each punched plate has large diameter air holes densely punched to enlarge opening rate and parallel folded edges are installed after plate edges are folded at about the center of a vertical row of holes to the combustion chamber side. Half holes 18c, 18c' at edges of folded edges 18d of adjacent each punched plate 18 are arranged vertically with half pitch lag not to align and have half circular shape. Thus, at the adjacent part of each punched plate opening rate is equal and also opening shapes are formed by sets of half holes 18c, 18c' in spite of sufficiently small heat capacity and, there, inflow quantity of air is moderately reduced and inflow quantity of excess air is controlled, and thereby air to fuel ratio is maintained moderately and complete combustion is secured for overall span of punched plates 18.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an oil combustor having a flat combustion chamber used for space heating, heating, drying, etc.

A conventional oil combustor having a flat combustion chamber has a structure as shown in FIG. 3, for example. That is, even though the flat surface of the combustion chamber 3 in which the air holes 4 are provided facing the window 2 equipped with the heat ray transmitting body 1 is uneven, the aperture ratio and the shape of the aperture are the same over the entire width. It had become.

Problems to be Solved by the Invention In the conventional combustor described above, it is difficult to achieve uniform combustion due to the uneven shape of the combustion chamber 3 during combustion, and non-uniform red heat on the wall of the combustion chamber 3 occurs. It was easy. That is, during combustion, the combustion chamber 3 is heated by the flame and high-temperature exhaust gas and becomes red-hot, but since the combustion chamber 3 has an uneven shape, the fuel gas or combustion exhaust gas tends to concentrate in the curved flow path on the inner surface of the convex portion 3a. On the other hand, in the recessed portion 3b, the fuel becomes lean and the fuel gas is likely to be distributed unevenly over the entire width. However, the distribution of the air holes 4 in the combustion chamber 3 is the same in both cases, and air is supplied with a nearly uniform distribution. Therefore, in the recessed part 3b, the fuel concentration is diluted and the amount of combustion is small, and complete combustion is difficult, and the heat dissipation area of the side wall is the same as that of the convex part 3a, and the temperature of the combustion chamber 3 is different from that of the high-temperature convex part 3a and the low temperature. It becomes a spotted state with the recessed part 3b. This red-hot codfish not only causes a decrease in the amount of radiant heat emitted from the heat ray transmitting body 1, but also tends to cause incomplete combustion, especially in the recess 3b, because it inhibits complete combustion, and a large amount of monoxide is contained in the combustion exhaust gas. They also emit carbon, emit odors and soot, and lead to combustion abnormalities.

The present invention aims to eliminate the above-mentioned conventional drawbacks, ensure uniformity of the red heat state in a linear combustor, and maintain complete combustion while increasing the amount of radiant heat radiation.

Means for Solving the Problems The technical means of the present invention for solving the above-mentioned problems is to form a bent end in which a punching plate, which is an opening provided in a part of a flat combustion chamber, is bent toward the combustion chamber side at the end. In addition, a half-pinch step is provided so that the end openings divided at the bent end are not parallel to the adjacent openings.

Effect: By the above means, it is possible to eliminate the fuel lean/air excess condition in the adjacent part of the punching plate, to ensure complete combustion in the entire combustion chamber, and to maintain the high temperature and uniform red heat of the red hot part.

EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings. In FIG. 2, reference numeral 11 denotes a flat lamp wick, which is provided with a rack 12 on its lower side, and is moved up and down while being held between wick cylinders 15 by meshing with a pinion 14 that is interlocked with an operating knob 13. On the fire pan 16 provided at the upper end of the wick cylinder 16, a perforated plate 17 with small-diameter air holes 17a and a plurality of large-diameter air holes 18& are formed closely and arranged in parallel. , a horizontally long flat combustion chamber 19 such as a snitching plate 18 is mounted, and is surrounded by an outer cylinder 2o. Punching board 18
A window 21 provided with heat-resistant glass 21a is provided on the front surface of the outer cylinder 20 facing the. Here, each punching plate 18
As shown in FIG. 1(A), the large-diameter air holes 18a are densely drilled so that the opening is large, and both vertical ends are opened toward the inside of the combustion chamber 19 at approximately the center of the vertical hole row. Bent end 18
The punching plates 18 are arranged in parallel as shown in FIG. Also, the bent end 18 of each adjacent punching plate 18
The end half holes 18 c and 18 c' of d are shifted by half a pitch in the vertical direction so that they are not parallel to each other, and both have a semicircular shape.

The operation of the above configuration will be explained next.

During combustion, fuel vaporized from the lamp wick 11 is supplied with air from the air holes 17a, 19a and 18C218C' in the combustion chamber 19, and is mixed and combusted. At this time, the punching plate 18, which has a small heat capacity, is heated by the flame and the high-temperature exhaust gas and becomes red hot, but the bent end 18 of the punching plate 18, which protrudes from the inner surface of the combustion chamber 19,
d acts as a baffle plate for the flow path in the combustion chamber 19, leading to a fuel lean state in the core. At this time, if air is supplied with the same aperture ratio and aperture shape over the entire width of the punching plate 18, there will be too much air in adjacent areas, that is, lean combustion will be forced, and carbon monoxide and soot due to incomplete combustion will be generated.
This results in the generation of odors. - However, the aperture ratio is the same in the adjacent parts of each punching plate 18, so the heat capacity is sufficiently small but the aperture shape is half-hole 18c, 18.
c', and has a structure with a large circumference relative to the opening area and a large flow resistance, so the amount of air inflow is moderately attenuated and excessive air inflow is suppressed. The fuel ratio is maintained appropriately, thus ensuring complete combustion over the entire width of the punching plate 18.

On the other hand, this punching plate 18 is made by cutting a plate with uniform holes.
Although it can be easily processed by bending, air holes 18a are similarly formed in the bent end 18d that protrudes inward. Here, if the width of the bending end 18d is set to approximately half the width of the air holes 18a in the horizontal direction, the bending pieces 18d are vertically continuous as shown in FIG. 1(B), and a sufficient reinforcing effect can be maintained.

Furthermore, it also acts as a heat collecting fin protruding into the combustion chamber 19 through which high-temperature combustion gas flows, making up for the lack of red heat due to insufficient combustion amount in the area adjacent to the punching plate 18, and ensuring uniform red heat over the entire width. .

In this way, the linear combustion chamber 19 can exhibit favorable combustion performance without causing combustion abnormalities due to unnecessary air inflow in the adjacent part of the punching plate 18, which is composed of parallel U-shaped bodies. The plate 18 is heated to a sufficiently high temperature and red hot uniformly, and not only the visual heating effect but also the substantial amount of radiant heat can be maintained.

Effects of the Invention As described above, the present invention has a punching plate provided in a part of a triplanar combustion chamber, which has an important opening, and is arranged in parallel as a plurality of oil contact ends bent at the end, and is divided at the bent end. By shifting the openings such as semicircular holes at the end by half a pitch so that they are not parallel to the openings such as adjacent semicircular holes, complete combustion is ensured in the entire area inside the combustion chamber, and the red-hot part is heated to a uniform temperature. It can maintain a red-hot state.

[Brief explanation of the drawing]

Fig. 1(A) is a front view of essential parts of an oil combustor according to an embodiment of the present invention, Fig. 1(B) is a side view thereof, Fig. 2 is a longitudinal sectional view of the oil combustor, and Fig. 3 is a longitudinal sectional view of the oil combustor. FIG. 2 is a perspective view of main parts of a conventional oil combustor. 18... Punching plate, 18a... Air hole, 18b... Mark/Rail, 18c, 18a'...
... Half hole, 18d... Refracting piece, 19...
... Combustion chamber, 20... Outer cylinder, 21a...
・Heat-resistant glass. Name of agent: Patent attorney Toshio Nakao and 1 other person-O
Q) Figure 2 Figure 3

Claims (2)

[Claims] (1) It has a horizontally long flat combustion chamber consisting of a perforated plate with many small holes and a punching plate with large diameter holes, and an outer cylinder surrounding this combustion chamber, A window equipped with a heat ray transmitter is provided in the outer cylinder facing the plate, and a plurality of punched plates are arranged side by side with both ends bent inward at approximately the center of one row of vertical holes, and This oil combustor is constructed by providing a half-pitch step in the vertical direction so that the openings at the ends divided at the bent ends are not parallel to the openings at the adjacent ends. (2) The oil combustor according to claim 1, wherein the bent end of the punching plate has a width that is approximately half the pitch of the horizontal distance between the holes.