JPH0143203B2 - - Google Patents

Description

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

BACKGROUND OF THE INVENTION A wick type oil combustor having a flat wick and a flat combustion chamber has a structure in which the aperture ratio of the flat part of the combustion chamber facing the window equipped with the heat ray transmitter is the same over the entire width.

Problems to be Solved by the Invention In the above-mentioned conventional combustor, it is difficult to achieve uniform combustion due to the flattening of the combustion chamber during combustion, and therefore it is easy to cause non-uniform red heat on the walls of the combustion chamber. Ta. That is, during combustion, the combustion chamber is heated by the flame and high-temperature exhaust gas and becomes red-hot;
In a so-called double cylinder combustion chamber, which is made up of double cylinders, there is no edge, so it is difficult for non-uniform combustion to occur over the entire circumference, so there is almost no temperature deviation, and even red heat is produced. The situation was something that could be obtained.
However, in a so-called linear combustor that has a flat combustion chamber, the conditions on both sides of the combustion chamber in the longitudinal direction are different from the center, and the fuel concentration is diluted and the amount of combustion is small. The area is larger than that of the central part, and the temperature of the combustion chamber is significantly lower than that of the central part. This decrease in red-hot temperature is not limited to only the ends, but also leads to heat conduction cooling of adjacent parts, and the combustion chamber wall exposed to the window of the outer cylinder has a large deviation in red-hot state between the center and side parts. It was a presentation. In addition to this uneven red-hot state, lean combustion at both ends tends to cause incomplete combustion.
emitting large amounts of carbon monoxide in combustion exhaust gas,
It also generated odor and soot, and caused 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 problems are as follows:
Both side parts of a red-hot part with a large aperture ratio provided at the upper part of one side plane part of a flat combustion chamber have a smaller aperture ratio than the central part, and at least the middle upper part between the two parts is separated.

Effect: By the above means, it is possible to eliminate the fuel lean state at both ends of the combustion chamber, ensure complete combustion throughout the combustion chamber, prevent heat radiation due to heat transfer at both sides, and maintain high temperature uniform red heat in the red-hot part. can.

Embodiment An embodiment of the present invention will be described below based on the accompanying drawings. In Fig. 2, 1 is a flat lamp wick, equipped with a rack 2 on the lower side, and an operating knob 3.
It meshes with a pinion 4 that interlocks with the core cylinder 5, and moves up and down while being held between the core cylinders 5. A horizontally long flat combustion chamber 7 made of a perforated plate with small-diameter air holes 7a and large-diameter air holes 7b is placed on the fire pan 6 provided at the upper end of the core cylinder 5. It is surrounded by an outer cylinder 8. The upper front surface of the combustion chamber 7, which has a large-diameter air hole 7b formed therein, is a red-hot part 9 with a small heat capacity, and the upper and lower parts are fitted and locked to the thin part 7c. Further, the outer cylinder 8 facing the red-hot part 9 is provided with a window 10 having a heat-resistant glass 10a. Here, as shown in FIG. 1, the red-hot part 9 is a central part 9a with a large aperture ratio, in which large-diameter air holes 7b are densely bored.
and both side parts 9b with a small opening ratio in which an appropriate number of small-diameter air holes 7a are bored, and a central part 9.
A and both sides 9b are separated by slits 9c.

The operation of the above configuration will be explained next.

During combustion, the fuel vaporized from the lamp wick 1 is supplied with air from the air holes 7a and 7b within the combustion chamber 7.
Burns while mixing. At this time, the red-hot part 9, which has a small heat capacity, is heated by the flame and the high-temperature exhaust gas and becomes red-hot, but in addition to the fact that the wick 1 is interrupted in the side part of the combustion chamber 7, the amount of heat radiated from the side wall is small. It is large, and the amount of fuel vaporized is smaller than that in the center. At this time, if air is supplied with the same aperture ratio over the entire width of the red-hot section 9, there will be too much air in the side sections, that is, lean combustion will be forced, and carbon monoxide, soot, and odor due to incomplete combustion will be reduced. result in the occurrence of However, since the opening ratio of the side parts 9b of the red-hot part 9 is lower than that of the central part 9a, and excessive air inflow is suppressed, the ratio of air to fuel is maintained appropriately, and the combustion chamber 7 is Complete combustion can be ensured over the entire width.

On the other hand, the temperature of this red-hot part 9 is conducted from the center part 9a to both sides 9b because a slit 9c is provided between the center part 9a and both sides 9b to separate them and thermally separate them. The central portion 9a is heated to a sufficiently high temperature over the entire area without being radiated, and a large amount of radiant heat can be supplied to the front surface of the outer cylinder 8 through the heat-resistant glass 10a. In addition, at this time, both sides 9b
Although the amount of combustion here is small, the heat capacity is large, and the red-hot state is inferior to that of the central part 9a, but its width is only small compared to the entire width of the red-hot part 9, and the radiant heat dissipation area is Or there is no negative effect on the visual red hot area.

In this way, by forming the linear combustion chamber 7, it is possible to exhibit desirable combustion performance without causing abnormal combustion due to the inflow of unnecessary air on both sides of the red-hot part 9, and to maintain the red-hot part 9 at a sufficiently high temperature and uniformly. This makes it possible to maintain not only a visual heating effect but also a large amount of substantial radiant heat dissipation.

Here, if the window 10 provided opposite to the red-hot part 9 is made approximately the same width as the width of the central part 9a separated by the slit 9c, the condition of the side parts 9b having inferior red-hot brightness will be exposed. This makes it possible to see through only the central portion 9a which is uniformly heated, which is visually preferable for practical purposes. Further, although the slit 9c can sufficiently provide a heat insulating effect by providing it only in the middle and upper part of the red-hot part 9, it is actually easier to process it if the central part 9a and both side parts 9b are made of separate members as in this embodiment. . Furthermore, combustion chamber 7
It is preferable for the total width of the lamp wick to be slightly larger than the total length of the lamp wick 1 when the lamp wick 1 is moved up and down. However, if the width of the central portion 9a is approximately the same as the total length of the lamp wick 1, the amount of fuel vaporized and It is easy to obtain an appropriate correlation with the distribution of air in the red-hot section 9, making it possible to achieve a more complete combustion state.

Effects of the Invention As described above, the present invention provides a structure in which both sides of the red-hot part, which is provided at the upper part of the flat part of one side of the flat combustion chamber and which has a large opening ratio, have a smaller opening ratio than the central part, and at least By separating the middle and upper parts,
This ensures complete combustion in the entire area within the combustion chamber, and also maintains a uniform red-hot state by increasing the temperature of the red-hot part.

[Brief explanation of drawings]

FIG. 1 is a perspective view of essential parts of an oil combustor according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view thereof. 1... Lamp wick, 7... Combustion chamber, 9... Red-hot part, 9
a...Central part, 9b...Both sides, 9c...Slit.

Claims (1)

[Scope of Claims] 1. A combustion chamber comprising a horizontally long and flat combustion chamber made of a perforated plate with the tip of a flat lamp wick exposed at the lower end, and an outer cylinder surrounding the combustion chamber, the combustion chamber having a flat surface on one side. The upper part is provided with a red-hot part with a larger aperture ratio than other parts, and the outer cylinder facing the red-hot part is provided with a window equipped with a heat ray transmitter, and both ends of the red-hot part have a larger aperture ratio than the center part. An oil combustor that has a lower middle part and at least a middle upper part between the middle part and both ends. 2. The oil combustor according to claim 1, wherein the width of the window is approximately the same width as the central portion of the red-hot portion where the aperture ratio is large. 3. The oil combustor according to claim 1 or 2, wherein the central width of the red-hot part is approximately the same width as the entire length of the lamp wick.