JPS6229771Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a combustion tube for oil-burning appliances.

Conventional technology Conventionally, in this type of combustion tube, infrared rays from the heat dissipation net installed at the top have little heating effect, so the red-hot rays from the middle tube, which glows red during combustion, are irradiated from the heat-resistant transparent outer tube. Some of them are publicly known (see Japanese Utility Model Application No. 55-77005).

That is, this conventional combustion engine is equipped with an inner cylinder 40 having many small holes, a middle cylinder 41 having many small holes, and a transparent outer cylinder 42 outside the middle cylinder 41, as shown in FIG. Tubes are known.

Conventionally, in this type of combustion cylinder, as shown in FIG.
A middle cylinder 45 is installed on the outside of the inner cylinder 43, a transparent outer cylinder 46 is installed on the outside of the middle cylinder 45, and a transparent upper outer cylinder 47 is installed on the top of the transparent outer cylinder 46. It is known that a gap 49 is provided in the upper part of the flame path 48 formed between the flame path 43 and the middle cylinder 45.
(Refer to Publication No. 27556).

Problems to be solved by the invention By the way, in the case shown in FIG. 3, the middle tube 41 is formed of a punched plate and is relatively easy to manufacture, and the middle tube 41 itself has great strength. On the other hand, the red-hot state is relatively good at the beginning of combustion.
However, 10 to 50 hours after combustion, the entire body becomes reddish red and red, which is caused by the middle cylinder 41 being oxidized during combustion. The amount released decreases,
In addition, it looks bad, takes several minutes from the start of combustion to reach a red-hot state, and has the drawback of causing uneven red-hotness on the top and bottom of the middle cylinder.

In addition, the one shown in FIG. 4 employs a white flame combustion method in the upper part of the middle cylinder 45, and it looks warm enough to be used as a stove, but the transparent outer cylinder 46 and the transparent upper part A flame path 4 in which air is formed between the inner cylinder 43 and the middle cylinder 45 with the cylinder 47
It is necessary to provide a gap 49 at the top of 8.
In addition, white flame combustion required complicated construction methods, and there was a risk that the combustion temperature would be rather low, resulting in less radiant heat generated from the combustion tube.

This invention solves the above-mentioned problems and aims to provide a combustion tube for oil-burning appliances that is convenient to use.

Means for Solving the Problem The structure of this invention to achieve the above object is to provide a large number of small holes 2 below approximately two-thirds of the height.
2... and a large number of small holes 3, 3... with a larger diameter than the small hole 2 above about two-thirds of the height, and an upper guide plate 6 at the upper end for guiding combustion air outward.
and a large number of combustion holes 13, 13...
is drilled downward and a large number of combustion holes 13, 13...
A large number of small holes 14, 14, . The middle cylinder 12 is provided with a guide body 19 made of a heat permeable material on the outside of the cylinder 12 and narrows inward at the upper end, and is higher than the inner cylinder 1.
A transparent cylinder 16 in which a heat storage chamber 21 is formed is provided between the inner cylinder 12 and the small holes 14, 14, . It is shaped like a staggered brick with small holes 14, 14 located above and below in between, and is shaped by punching so that the opening area of the small holes 14 is larger than the opening area of the combustion hole 13.
A rectifier ring 15 having a rectifier opening 17 is provided between the inner tube 1 and the transparent tube 16, and a slow flow heat chamber 23 larger than the flame path chamber 20 and the heat storage chamber 21 is provided between the upper outer side of the inner cylinder 1 and the transparent tube 16. was formed.

Function: This invention uses the above-mentioned means to produce a fuel wick 27
The fuel is placed on a fire pan 26 equipped with a flame wick 26, and combustion is started by making the wick 27 protrude and performing a well-known combustion operation.

That is, by ignition, the inner cylinder 1 and the middle cylinder 1 at the upper end of the wick 27
Evaporative gas of the fuel is generated at the lower part of the flame path chamber 20 between the inner cylinder 1 and the combustion air, and combustion air is supplied from the small hole 2 of the inner cylinder 1 and the combustion hole 13 of the middle cylinder 12 for combustion.

This combustion ends mainly in the lower part of the inner cylinder 1 and the part a of the middle cylinder 12 that actively contributes to combustion, but the secondary combustion is further carried out in the lower part of the inner cylinder 1 and the part a of the middle cylinder 12 that contributes to red heat. Performed by obtaining combustion air from b.
That is, a large amount of combustion air is supplied from the small holes 2 into the flame path chamber 20 by the air guide action of the second baffle plate 10 of the inner cylinder 1, and also flows into the heat storage chamber 21 between the middle cylinder 12 and the transparent cylinder 16. The air is suppressed by the upper rectifying ring 15 and is supplied into the flame path chamber 20 through the oblong small hole 14 bored in the portion b of the middle cylinder 12 that contributes to red heat, and is completely combusted.

As a result, the portion b of the middle tube 12 that contributes to red heat becomes red hot and emits infrared rays through the transparent tube 16.
On the other hand, the flame and hot air rising from the flame channel chamber 20 to the slow flow heat chamber 23 between the inner tube 1 and the transparent tube 16 flow into the wide slow flow heat chamber 23 while increasing the flow velocity in the narrow flame channel chamber 20. Therefore, the flow velocity is weakened, and at the same time the narrow heat storage chamber 21
A part of the high temperature hot air or air uniformly rectified from the rectification opening 17 of the rectification ring 15 flows into the slow flow heat chamber 23 while increasing the flow velocity, but since the slow flow heat chamber 23 is wide, it The flow velocity is weakened.

Therefore, the flame or hot air does not spread to the side of the transparent cylinder 16, and the rising speed is slow, and it is brought up to the height of the upper plate 5 while following the inner cylinder 1. At the same time, the tertiary combustion air is released from the small hole 3 of the inner cylinder 1. is supplied, so the flames and hot air tend to spread toward the transparent tube 16 side, but the draft is suppressed by the guide body 19 at the upper end of the transparent tube 16, so the flames and hot air follow the inner tube 1 straight without being disturbed. The mixture is mixed with a large amount of tertiary combustion air, resulting in complete tertiary combustion.

Due to this combustion heat, the upper part of the inner cylinder 1 becomes red hot and emits infrared rays through the transparent cylinder 16.

Furthermore, the flame in this slow flow heat chamber 23 is larger than the others, and because of the upper guide plate 6 and guide body 19 that suppress draft, the flame slowly burns out without being disturbed. It does not produce red flame and exhibits a very light pink color.

Also, regarding the overall combustion state through the transparent cylinder 16, the rectifying ring 15 at the upper end of the middle cylinder 12 is not red-hot but darkened, and the red-hot state is just divided into two in the middle.

Next, when the combustion power is reduced from high power combustion to medium power combustion, the height of the flame naturally decreases, and the flame does not reach the slow flow heat chamber 23 but stays in the flame path chamber 20.

Therefore, although clear tertiary combustion is not performed as in the case of large-power combustion, high-temperature hot air or air in the heat storage chamber 21 is suppressed by the rectifier ring 15 and the rectifier opening 17 at the upper end of the middle cylinder 12. Therefore, the combustion air in the inner cylinder 1 is sufficiently supplied into the flame path chamber 20 through the small hole 14 made in the part b of the middle cylinder 12 that contributes to red heat, while the combustion air in the inner cylinder 1 is
A large amount of combustion air is supplied into the flame path chamber 20 from the small holes 2 by the air guide action of the rectifier plate 10, thereby maintaining a complete combustion state, thereby reducing the red heat in the middle cylinder 12 below the rectifier ring 15. Part b, which contributes to heat, can maintain a red-hot state well, and during high-power combustion, the middle cylinder 12 and the upper part of the vertically elongated inner cylinder 1 are well made red-hot, while during medium-power combustion, only the middle cylinder 12 is heated well. It produces good red heat and prevents uneven red heat caused by adjusting the heat power.

Embodiment Next, an embodiment of this invention shown in the drawings will be described. 1 is a Fe-Cr stainless steel plate with a diameter of 0.3 to 0.8 mm, and a large number of small holes of 1.2 to 3.0 φ are formed around the entire lower part.
A large number of small holes 3 of 2.0 to 8.0φ are evenly drilled all around the upper part, with an opening ratio of 40 to 60% of the entire upper part, with a diameter of about 80 to 100φ and a height of about 150 to
The inner cylinder has a cylindrical shape with a diameter of 200 mm, and a top plate 5 with ventilation holes 4 evenly dotted thereon is attached to the opening at the upper end to partition it. Attaching an upper guide plate 6 that maintains a diameter that is approximately the same as or slightly larger than that of the upper guide plate 6 that guides the air from the ventilation hole 4 to the outside,
Furthermore, a first rectifying plate 8 with a large number of ventilation holes 7 is installed so as to partition the inside of the lower part slightly above the lower end.
In addition, a second rectifier plate 10 is provided with a number of ventilation holes 9 in the middle thereof so as to partition the boundary between the small holes 2 and 3 having different diameters (divided into a lower part and an upper part with this as the center).
Further, on the second rectifying plate 10, there is provided an inner guide plate 11 which extends upwardly, has a smaller diameter than the inner diameter of the inner cylinder 1, and guides the air from the ventilation hole 9 outward. 1
2 has a diameter of about 100 to 120φ and a height of about 100 to 150, which is located outside the inner cylinder 1 and is lower than the inner cylinder 1 and spaced apart from it.
The middle cylinder is made of Fe-Cr stainless steel plate with a diameter of 0.2 to 0.6 mm and has a cylindrical shape of 0.2 to 0.6 mm. at a position corresponding to the first rectifier plate 8 of
A large number of combustion holes 13 of 1.2φ to 3.0φ are bored, and the upper part b, which contributes to red heat, is at most 2/2 of the total length.
3, a large number of horizontally long small holes 14 of 1.5 to 30 x 10.0 to 15.0 mm are arranged in a staggered brick shape, partially overlapping each other vertically, and the longitudinal diameter of the small holes 14 and each The dimensions between the small holes 14 and the rest are 1.5 to 3.0.
mm, with an overall aperture ratio of 40 to 60%, and the upper end is located at a position corresponding to the height of the second rectifier plate 10 of the inner cylinder 1, and the upper end is horizontally bent outward or shaped into an annular shape. A rectifying ring 15 made of a separate member is provided to partition the inside of the outer transparent cylinder 16, and a plurality of rectifying rings 15 are perforated at equal intervals in order to suppress and rectify part of the combustion air and hot air. A small hole or a rectifying opening 17 is formed as a means for keeping a slight gap between the outer circumferential edge and the inner side of the transparent cylinder 16.

The transparent tube 16 is made of a heat-resistant and heat-transmitting material, and has an outer diameter of about 100 to 150 mm and a height of about 150 to 230 mm.
Further, the lower end of the transparent cylinder 16 is supported by a non-transparent outer cylinder 18 at a position slightly higher than the part a of the middle cylinder 12 that actively contributes to combustion, while the upper end is supported by the transparent cylinder 16 itself. The rising flame or hot air is suppressed by inwardly bending the flame or hot air while keeping the inclination inward, or by constricting it with a guide body 19 fitted with a ring-shaped guide member that is a separate member while keeping the inclination. Further, the inner peripheral edge of this guide body 19 is not allowed to protrude inwardly from the outer middle cylinder 12.

The inner tube 1, the middle tube 12, the transparent tube 16, and the outer tube 18
When assembling, a flame path chamber 20 for combustion is formed between the lower part of the inner cylinder 1 and the middle cylinder 12, and a space between the middle cylinder 12 and the transparent cylinder 16 is slightly larger than the flame path chamber 20. A heat storage chamber 21 with a (wide) volume is formed, and an air inflow chamber 22 is further formed between the lower part of the middle cylinder 12 and the outer cylinder 18.
A slow flow chamber having a larger (wider) volume than the flame duct chamber 20 and the heat storage chamber 21 is formed between the upper part of the inner cylinder 1 and the upper part of the transparent cylinder 16, which are located above while communicating with the flame duct chamber 20. 23, and the whole is integrally formed with horizontal cross pins 24 and vertical pins (not shown) to form a combustion tube 2.
form 5.

It goes without saying that the upper end of the transparent tube 16 may be covered with a curved red-hot net.

Reference numeral 26 denotes a fire pan provided on the upper part of a wick guide tube (not shown), on which the combustion tube 25 is removably mounted, and a combustion wick 27 is fitted into a lower position corresponding to the flame path chamber 20.

Effects of the invention This invention has the above-mentioned structure, and a large number of small holes 2, 2... are bored below about two-thirds of the height, and a number of small holes 2 are bored above about two-thirds of the height. The inner cylinder 1 has a large number of small holes 3, 3... having a large diameter and is equipped with an upper guide plate 6 at the upper end that guides combustion air outward, and a large number of combustion holes 13, 13... are arranged downwardly. At the same time, a large number of small holes 14, 14... are bored above the numerous combustion holes 13, 13, so that the height is approximately two-thirds of the inner cylinder 1, and a flame path chamber is formed between the inner cylinder 1 and the inner cylinder 1. 20, and a guide body 19 made of a heat-transmitting material on the outside of the middle cylinder 12 and narrowing inward at the upper end.
A transparent cylinder 16 which is higher than the inner cylinder 1 and has a heat storage chamber 21 between it and the middle cylinder 12 is provided, and a rectifying opening 1 is provided between the upper end of the middle cylinder 12 and the transparent cylinder 16.
7 is provided, and the inner cylinder 1
The flame channel chamber 20 is located between the upper outer side and the transparent tube 16.
Since it forms a slow-flow heat chamber 23 which is larger than the heat storage chamber 21, it is possible to perform combustion to make the middle cylinder red-hot, but even if the inner cylinder is made longer than the middle cylinder, draft and tertiary combustion air can be supplied. Combustion balance is maintained, so complete tertiary combustion can be performed and the inner cylinder can be sufficiently and uniformly heated to red.

In addition, since there is a limit in the height direction to make the inner cylinder red-hot only, the hot air supplied to the slow-flow heat chamber through the rectifier opening of the rectifier ring and the inner guide plate are used to heat the material in the outer circumferential direction. The flame duct chamber is raised by high-temperature air that has been guided through the small hole at the top of the inner cylinder and air that has been guided by the upper guide plate and supplied to the upper part of the slow-flow heat chamber. The evaporated gas undergoes tertiary combustion, and this heat makes the exposed part of the inner cylinder red-hot, increasing the red-hot area in the height direction compared to conventional products, and increasing the amount of infrared rays emitted. This can significantly improve the heating effect.

In particular, due to the firepower adjustment of the combustion tube using a transparent tube, the upper part was darkened and only the lower part was red-hot, and the middle part became an unsightly red bean color that could not be clearly distinguished. It is possible to clearly distinguish areas by eliminating the neutral red bean color,
The heating effect and aesthetics are improved, and when adjusting the firepower, the red-hot state can be visually checked around the rectifier ring and used as a guide for adjusting the firepower, and multi-stage combustion with no uneven redness is achieved. can be done.

Furthermore, tertiary combustion maintains a good combustion balance,
Moreover, since it burns slowly, it does not generate red flame or cause the flame to become turbulent.Therefore, it is pale pink and does not interfere with the red heat of the inner cylinder.

In addition, since the middle cylinder has oblong small holes arranged in a staggered brick pattern, it looks beautiful and further improves the design effect of the combustion cylinder equipped with a transparent cylinder. Furthermore, it has a very simple structure and can be provided at low cost, and has many practical effects.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of an embodiment of this invention, FIG. 2 is a cross-sectional view of the same, and FIGS. 3 and 4 are cross-sectional views of a conventional example. 1...Inner cylinder, 2...Small hole, 6...Upper guide plate, 1
2... middle cylinder, 14... small hole, 15... rectifying ring body,
16... Transparent tube, 17... Regulating flow opening, 19... Guide body, 20... Flame path chamber, 21... Heat storage chamber, 23...
...Slow flow heat chamber.

Claims (1)

[Scope of utility model registration request] Many small holes 2, 2 below about two-thirds of the height
. . . and a large number of small holes 3, 3 . An inner cylinder 1 with a large number of combustion holes 13, 13... drilled downward and a large number of small holes 14, 14... drilled above the combustion holes 13, 13... A middle cylinder 12 having a height of two-thirds and having a flame path chamber 20 formed between it and the inner cylinder 1, and a guide body made of a heat-transmitting material and narrowing inward at the upper end of the middle cylinder 12. 19, and a transparent cylinder 16 which is higher than the inner cylinder 1 and has a heat storage chamber 21 formed between it and the middle cylinder 12, and the small holes 14, 14, . . . of the middle cylinder 12 have an oblong shape. At the same time, the small holes 14, 14 are positioned above and below between the small holes 14, 14 adjacent to each other on the left and right to form a staggered brick shape, and the opening area of the small holes 14 is made larger than the opening area of the combustion hole 13. In addition, a rectifying ring body 15 having a rectifying port 17 is provided between the upper end of the middle cylinder 12 and the transparent cylinder 16, and the flame path chamber 20 is further provided between the upper outer part of the inner cylinder 1 and the transparent cylinder 16. and a combustion tube for an oil combustion appliance, characterized in that a slow flow heat chamber 23 larger than the heat storage chamber 21 is formed.