JPH0117048B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a combustion tube that emits heat rays and performs white-yellow flame combustion using a flame spreader.

[Conventional technology]

The combustion tube, which combines a double-tube combustion tube that emits heat rays and a flame expansion device that produces white-yellow flame combustion, has excellent heating effects and clean combustion exhaust gas, and is the invention of the applicant. There are Utility Model No. 47-35707, Utility Model No. 51-46678, and Utility Model No. 55-54707.

[Problem that the invention seeks to solve]

By the way, since this type of combustion tube has a secondary combustion chamber formed on top of a dual-tube combustion tube, its center of gravity is very high, and the stability of the combustion tube is very poor, making it prone to tipping over. For this reason, it is impossible to use a general ignition device that ignites by tilting the combustion tube.

Further, since a flame spreader for burning white-yellow flame used for secondary combustion requires a large amount of air, an air passage extending outward is required in the center of the combustion tube. However, combustion tubes are also used in windy areas, and when wind blows into the air flow path, the amount of air becomes abnormally large in some areas, causing problems such as oily smoke.

[Means for solving problems]

1 is an inner flame tube, 2 is an outer flame tube placed outside the inner flame tube 1, and 3 is an outer flame tube placed outside the outer flame tube 2. The inner and outer flame tubes 1 and 2 have many small parts. There is a hole. The inner and outer flame tubes 1 and 2 are mounted on an inner core tube 11 and an outer core tube 12 that form a core housing tube, and the core 13 housed in the core housing tube is mounted on the inner and outer flame tubes 1 and 1, respectively. The tip protrudes into the gap C of 2.

Reference numeral 7 denotes a heat-transmitting flame tube, and 6 denotes a flame expansion device installed above the inner flame tube 1. The heat-ray transmitting tube 7
A secondary combustion chamber A is formed, and a flame spreader 6 is disposed within the secondary combustion chamber A.

The outer cylinder 3 has an upper part made up of a heat ray transparent cylinder 5 and a lower part made up of an opaque cylinder 4, and 15 is a cross pin that holds the opaque cylinder 4, the outer flame cylinder 2, and the inner flame cylinder 1 together concentrically. It is. The outer diameter of the opaque cylinder 4 is set to be approximately the same as or larger than the maximum diameter of the primary combustion chamber or the secondary combustion chamber A.

Reference numeral 14 denotes a bottom plate of the primary combustion chamber extending outward from the core outer cylinder 12 that accommodates the core 13, and the opaque cylinder 4, which has the maximum diameter of the combustion cylinder, is mounted on the bottom plate 14 of the primary combustion chamber. , the weight of the combustion tube is inner and outer flame tube 1,
2 to the core inner/outer cylinders 11 and 12, and the opaque cylinder 4 to the primary combustion chamber bottom plate 14.

4' is an air hole made in the lower wall surface of the impermeable cylinder 4 near the primary combustion chamber bottom plate 14, and 14' is a small hole made in the primary combustion chamber bottom plate 14, which connects the air hole 4' of the impermeable cylinder 4 and the primary combustion chamber. Combustion air is supplied to the primary combustion chamber and the secondary combustion chamber A through small holes 14' in the combustion chamber bottom plate 14.

In the embodiment, the upper end of the opaque tube 4 extends toward the outer flame tube 2, and the heat-transparent flame tube 7 of the secondary combustion chamber A
is placed on the opaque tube 4, and the heat ray transparent tube 5 of the primary combustion chamber is also placed on the opaque tube 4, so that both the weight of the heat ray transparent flame tube 7 and the weight of the heat ray transparent tube 5 are opaque. It is connected to the primary combustion chamber bottom plate 14 via the cylinder 4. Furthermore, the diameter of the heat ray transmitting tube 5 is configured to be much smaller than the diameter of the heat ray transmitting flame tube 7.
7, a large gap B is formed between them.

Reference numeral 8 denotes an air hole formed in the part facing the outer flame tube 2 of the non-transparent tube 4 on which the heat ray transparent flame tube 7 and the heat ray transparent tube 5 are mounted, and air is supplied to the gap B through the air hole 8. do. A partition plate 9 is positioned above the outer flame tube 2 with a gap D in between.The partition plate 9 also serves as the bottom plate of the secondary combustion chamber, and its outer end is exposed to the heat-transmitting flame tube 7. Therefore, from the air hole 8, there is a gap B between the heat ray transmitting flame tube 7 and the heat ray transmitting tube 5, and a gap B between the partition plate 9 and the outer flame tube 2.
Combustion air is supplied to the flame spreader 6 through a gap D between the flame spreader 6 and the flame spreader 6.

Reference numeral 10 denotes a center tube installed inside the inner flame tube 1, and the air rising inside the core inner tube 11 passes through the center tube 10 and reaches the flame expansion device 6, and then passes through the upper flame expansion plate 6' and the lower flame expansion plate. It is supplied outward from the gap E with 6''.

[Explanation of action]

With the above configuration, when the tip of the wick 13 protruding into the gap C between the inner and outer flame tubes 1 and 2 is ignited, the inner and outer flame tubes 1 and 2 are ignited.
Air is supplied from the small holes of the outer flame cylinders 1 and 2, and the wick 1
The oil sucked up in step 3 is burned. At this time, the combustion heat makes the outer flame tube 2 red-hot and emits heat rays, and the heat rays transmitted through the heat ray transmission tube 5 collect the temperature.

When the amount of oil vaporized is large, such as by increasing the amount of protrusion of the wick 13, complete combustion cannot be achieved only by the primary combustion using the double-tube combustion tube, and a large amount of combustion gas exits from the inner and outer flame tubes 1 and 2. Contains unburned gas (incomplete combustion gas). The flame expander 6 above the inner flame tube 1 burns this unburned gas, and the draft of the flame tube 7 sucks up the combustion gas from the primary combustion and the unburned gas from the upper part of the gap C, and also sucks up the combustion gas from the primary combustion and the unburned gas inside the inner flame tube 1. The air outside the flame expander 6 is supplied from the gap E of the flame expander 6, and the air outside the flame expander 6 is supplied from the gap D rather than from the outside of the combustion tube, so that the gas from the primary combustion is replaced by a large amount of fresh air. It burns with a white-yellow flame when supplied with Heat rays generated from the white-yellow flame are radiated outward from the heat ray transmitting flame cylinder 7, similar to primary combustion.

In the present invention, a primary combustion chamber bottom plate 14 is provided that extends outward from the core outer cylinder 14, and an opaque cylinder having the maximum outer diameter of the combustion cylinder is mounted on the primary combustion chamber bottom plate 14. Air holes 4' and small holes 14' are formed in the lower wall of the impervious tube 4 and the bottom plate 14 of the primary combustion chamber, and combustion air from outside the combustion tube is taken in through the air holes 4' and small holes 14'. and flows into the gap between the opaque tube 4 and the outer flame tube 2. The air supplied to the small holes of the outer flame tube 2 is supplied to the glowing part of the outer flame tube 2 from the gap between the opaque tube 4 and the outer flame tube 2, and the air supplied to the flame expansion device 6 is supplied to the opaque tube 4. The air is supplied from the outside of the flame spreader 6 through the air hole 8 through the gap B between the flame tube 7 and the heat ray transmission tube 5 and the gap D between the partition plate 9 and the outer flame tube 2. The primary combustion causes the outer flame tube 2 to become red hot, and the secondary combustion involves white-yellow flame combustion using the flame expander 6, and the incomplete combustion gas generated during the primary combustion is completely combusted by the secondary combustion.

[Explanation of effects]

As described above, in this invention, the impermeable cylinder 4, which is the maximum outer diameter part of the combustion cylinder, is directly mounted on the primary combustion chamber bottom plate 14, making the combustion cylinder very comfortable to sit on. For this reason, compared to a conventional combustion tube in which all of the weight of the combustion tube is applied to the inner and outer tubes 11 and 12, one side of the combustion tube is lifted up during ignition operation, and the wick 13 is exposed to the flame of the pine or the ignition heater. When igniting the tip of the combustion tube, the fulcrum of the angle of inclination of the combustion tube becomes the lower end of the opaque tube 4, making it possible to open a large opening for ignition with a small angle of inclination. Also, the rattling when the combustion tube was returned to its original position was kept to a very small level despite the tall combustion tube. Therefore, instead of a complicated ignition device that lifts the combustion tube vertically, it has become possible to use an inexpensive ignition device that tilts the combustion tube.

In addition, for the combustion air supplied to the flame expansion device 6, a flame tube 7 without an air supply flow path is installed directly above the opaque tube 4, and the diameter of the heat ray transparent tube 5 is made much larger than that of the flame tube 7. By making it smaller, the air supplied to the lower part of the opaque tube 4 can be directly guided from the gap B to the flame spreader 6, and the flow path is also longer, so even if wind blows on the combustion tube, the wind pressure will fluctuate. It subsides,
This prevents the secondary combustion flame from dancing and prevents the generation of oil smoke and carbon monoxide gas.

In addition, it is extremely difficult to bring out the full performance of the combination of a double-tube combustion tube and a flame spreader compared to a combination that uses a red-hot element such as a wire mesh in the secondary combustion chamber. By erecting the heat ray transmitting flame tube 7 and the heat ray transmitting tube 5 and making the air supplied to the primary combustion chamber and the air supplied to the secondary combustion chamber independent, the red-hot part of the outer flame tube 2 can be effectively heated. It is now possible to achieve stable white-yellow flame combustion using a flame spreader while the flame expander is in use, and its practical performance has been significantly improved.

[Brief explanation of drawings]

The drawing is a sectional view of this invention. 1... Inner flame tube, 2... Outer flame tube, 3... Outer tube, 4
... Impermeable tube, 4'... Air hole of impermeable tube, 5...
...Heat ray transmitting tube, 6... Flame expanding device, 7... Heat ray transmitting flame tube, 11... Core inner tube, 12... Core outer tube, 13...
...Core, 14...Bottom plate of primary combustion chamber, 14'...Small hole in bottom plate of primary combustion chamber, 15...Cross pin, A...
Secondary combustion chamber, B, C, D, E... gaps.

Claims (1)

[Claims] 1. A primary combustion chamber is constituted by a combustion tube consisting of an outer tube 3, an outer flame tube 2 with a large number of small holes, and an inner flame tube 1,
A secondary combustion chamber A surrounded by a heat-transmitting flame tube 7 is constructed above the primary combustion chamber, a flame expander 6 is installed in the secondary combustion chamber A above the inner flame tube 1, and an outer flame tube 3 is installed. The lower part is made up of an opaque tube 4, the upper part is made up of a heat ray transparent tube 5, and the opaque tube 4, the outer flame tube 2, and the inner flame tube 1 are constructed.
In the oil combustor, the outer diameter of the opaque tube 4 is set to be approximately the same as or larger than the maximum diameter of the primary combustion chamber and the secondary combustion chamber A, and the inner and outer flame tubes are held together by a cross pin 15. A primary combustion chamber bottom plate 14 is provided that extends outward from a core outer cylinder 12 that accommodates a core 13 that is exposed to the gap C, and the impervious cylinder 4 is mounted on the primary combustion chamber bottom plate 14. An air hole 4' is provided in the lower wall of the transmission tube 4, and the bottom plate 1 of the primary combustion chamber is provided with an air hole 4'.
4 is provided with a small hole 14', and combustion air is supplied from the inside of the core inner cylinder 11 and from the air hole 4' and the small hole 14'. 2 The heat-ray transmitting flame cylinder 7 forming the wall of the secondary combustion chamber A is installed upright from the non-transparent cylinder 4, and the flame cylinder 7 does not form an air supply flow path, and is supplied to the outside of the flame spreader 6. The combustion tube for an oil combustor according to claim 1, wherein the entire amount of combustion air is supplied through the gap B between the heat-transmitting tube 5 and the heat-transmitting flame tube 7.