JPH053846Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a liquid fuel combustion device such as a wick-type kerosene stove, and particularly relates to a combustion tube that covers the wick.

(Prior Art) Conventionally, in a liquid fuel combustion device such as a wick-type kerosene stove, the amount of combustion can be adjusted by finely adjusting the amount of protrusion of the wick, which is covered by a combustion tube provided on the fire pan, from the fire pan. A structure has been adopted that makes it possible. In addition, the outermost outer cylinder of the combustion cylinder is
The structure is such that the lower part is an aluminized metal outer cylinder, and the upper part is a transparent glass outer cylinder.

(Problem that the invention aims to solve) However, in the conventional wick type kerosene stove mentioned above, if the amount of combustion is reduced by extremely reducing the amount of protrusion of the wick, it is uncomfortable due to the structure of the combustion tube that uses natural ventilation. Since large amounts of unpleasant odors and carbon monoxide are generated, the variable range of the wick protrusion is limited to a range that does not worsen the exhaust gas, thereby limiting the combustion amount to only about 90 to 80% of the maximum combustion amount. I can't. Therefore, for example, in early autumn or early spring, the amount of combustion becomes excessive, and ignition and extinguishing must be repeated, making it less convenient to use than pot-type combustion equipment or premixed vaporization combustion equipment.

The present invention was developed in consideration of the above circumstances, and the purpose of the present invention is to provide a liquid fuel combustion device such as a wick-type kerosene stove that has a simple structure and can greatly adjust the amount of combustion. be.

[Structure of the idea]

(Means for Solving the Problems) The liquid fuel combustion device of the present invention has a lower part immersed in liquid fuel, an upper part protruding above the fire pan, and the amount of protrusion from the fire pan is variable and is movable up and down. The lamp wick is provided with a combustion tube which is provided on the fire pan and includes a flame tube that covers the lamp wick, and an outer tube that covers the flame tube from the outside. A heat reflecting part is formed on the inner surface of the outer cylinder facing the part of the cylinder where the combustion density is high, and the heat reflecting part is formed on the inner surface of the outer cylinder facing the part of the cylinder where the combustion density is high when the lamp wick is at a low position. A heat absorbing portion is formed on the inner surface of the outer cylinder.

(Function) In the liquid fuel combustion device of the present invention, during intense combustion, by placing the wick in a high position and increasing the amount of protrusion of this wick from the fire pan, the amount of vaporized liquid fuel is increased and the amount of combustion is increased. On the other hand, during weak combustion, by lowering the wick and reducing the amount of protrusion of the wick from the fire pan, the amount of vaporized liquid fuel is reduced and the amount of fuel is reduced. During strong combustion, the part of the flame tube that covers the wick where the combustion density is high is located higher than during weak combustion, but the heat reflecting part on the inner surface of the outer cylinder opposite to this part is the part where the combustion density is high. By reflecting the heat from the flame tube and further increasing the temperature of the flame tube, the amount of vaporized liquid fuel is further increased, and the amount of combustion is further increased. On the other hand, during weak combustion, the part of the flame cylinder where the combustion density is high is located lower, but the heat absorption part on the inner surface of the outer cylinder that opposes this part absorbs the heat from the part where the combustion density is high. By preventing the flame tube from becoming too hot, the amount of combustion becomes even smaller.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIG. 4, reference numeral 1 denotes the main body of the apparatus, and the main body 1 of the apparatus has a fixed tank 3 fixed on a base 2, and a case body 4 attached to cover the fixed tank 3.

Further, a combustion section 6 is provided above the fixed tank 3. Next, the configuration of this fuel section 6 will be explained based on FIGS. 1 to 3.

An opening (not shown) is formed in the upper part of the fixed tank 3, and a substantially cylindrical burner basket 7 is fixed to surround this opening. A flange-shaped fire pan 8 is formed in the. Further, a cylindrical core guide 9 is integrally provided on the inner bottom surface of the fixed tank 3, and the upper part of the core guide 9 faces the upper part of the burner basket 7 from the inside with a small gap therebetween. It also has a fire pan 10 corresponding to the fire pan 8 of the burner basket 7 at its upper end.

A cylindrical lamp wick 16 made of non-combustible fiber is placed between the burner basket 7 and the wick guide 9.
is supported so that it can move up and down, and this lamp wick 16
has an upper part that is removable from the above-mentioned fire pans 8 and 10, and a lower part that is connected to the above-mentioned fixed tank 3.
It is constantly immersed in liquid fuel inside.

Further, above the fire pans 8 and 10, a lower combustion tube 17 and an upper combustion tube 18 are provided that cover the lamp wick 16 and are arranged in the vertical direction. Next, the configuration of these combustion tubes 17 and 18 will be explained starting from the lower combustion tube 17.

On the fire pan part 10 of the wick guide 9, there are many small air holes 1 formed by punching or the like.
Lower inner flame tube 20 which is a cylindrical flame tube having 9
is placed. And this lower inner flame tube 20
Inside, a partially opened guide disk 21 and a pair of guide plates 22 are lined up from bottom to top and fixed horizontally by spot welding or the like. Further, an annular lower receiver 23 that protrudes inward is fixed to the periphery of the upper end surface of the lower inner flame cylinder 20.

On the other hand, on the fire pan 8 of the burner basket 7 is a cylindrical flame tube that is located concentrically on the outer circumferential side of the lower inner flame tube 20 and has a large number of small air holes 26. A lower outer flame tube 27 is mounted, and a lower metal outer tube 28, which is a substantially cylindrical outer tube, is located concentrically on the outer circumferential side of the lower outer flame tube 27. installed. The lower metal outer cylinder 28, the lower outer flame cylinder 27, and the lower inner flame cylinder 20 are fixed to each other by, for example, a cross pin (not shown). Furthermore, a transparent lower glass outer cylinder 29 which is a cylindrical outer cylinder is placed on the upper part of the lower metal outer cylinder 28 . A gap is formed between the lower end of the lower metal outer tube 28 and the lower outer flame tube 27, and this gap serves as a lower air intake port 30 that opens downward.

The lower metal outer cylinder 2 is plated.
A cylindrical temperature setting plate 31 is disposed on the inner surface of the housing 8 over the entire circumference. The state of the inner surface of the temperature setting plate 31 facing the lower outer flame tube 27 is as follows:
The upper and lower parts are different, with the upper part being an aluminized heat reflecting part 31u, and the lower part being a heat absorbing part 31l coated with black heat-resistant paint.

Further, an air control plate 36 is fixed to the upper end of the lower outer flame cylinder 27 in the form of a flange, and the lower glass outer cylinder 29 is prevented from coming off by this air control plate 36. Further, the air control plate 36 has a plurality of communication ports 37 formed in a portion facing the space between the lower outer flame tube 27 and the lower glass outer tube 29, and a plurality of communication ports 37 are formed in the air control plate 36 in a portion facing the space between the lower outer flame tube 27 and the lower glass outer tube 29. Tube 29
A plurality of upper air intake ports 38 are formed in a portion located closer to the outer circumference.

The upper combustion tube 18 is connected to the lower inner flame tube 20.
It has an upper inner flame tube 42 which is a cylindrical flame tube having the same diameter as that of the above-mentioned lower outer flame tube 27 and has a large number of small air holes 41, and a large number of small air holes 43 having the same diameter as the lower outer flame tube 27. It is provided with an upper outer flame tube 44 which is a cylindrical flame tube. These upper inner flame tube 42 and upper outer flame tube 4
4 are concentrically connected to each other by a connecting fitting 45 which is substantially cross-shaped in plan view. That is, each tip of the connecting fitting 45 is connected to the slit portion 4 formed at the lower end of the upper inner flame tube 42 and the upper outer flame tube 44.
6 and 47, respectively, and an annular first upper receiver 48 and a second upper receiver 49 fixed to the peripheral edges of the lower end surfaces of the upper inner flame tube 42 and the upper outer flame tube 44, respectively. It is prevented from falling out. And, in the upper inner flame tube 42,
A rectifying plate stand 51 with a partially open opening is fixed to the upper end surface, and a substantially disc-shaped rectifying plate 52 is fixed onto this rectifying plate stand 51. On the other hand, a guide tube 53 is fixed to the upper end surface of the upper outer flame tube 44 with a gap maintained between it and the rectifier plate 52 .

Further, on the air control plate 36, an upper glass outer cylinder 54, which is a cylindrical outer cylinder with a larger diameter than the lower glass outer cylinder 29, is located on the outer peripheral side of the upper air intake port 38. It is placed there. and,
An annular glass retainer 55 is provided on the upper peripheral edge of the upper glass outer cylinder 54 that covers the upper outer flame cylinder 44 from the outside, and this glass retainer 55 and the air control plate 36 are connected to a connecting rod ( (not shown), the upper glass outer cylinder 54 is prevented from coming off.

Further, the upper end of a movable rod 61 is fixed to the center of the rectifying plate 52 and the rectifying plate stand 51, and the movable rod 61 is penetrated through the center of the connecting fitting 45, and the lower end of the movable rod 61 is fixed. It penetrates the center of the guide plate 22 inside the inner flame tube 20 so as to be vertically slidable. Further, the lower end of the movable rod 61 can freely approach and separate from the upper end of the drive rod 62, which is supported in the core guide 9 of the fixed tank 3 so as to be vertically movable. Then, by the movable rod 61, above the lower inner flame tube 20 and the lower outer flame tube 27,
The upper inner flame tube 42 and the upper outer flame tube 44 are supported coaxially and vertically movably.

Further, in the center of the movable rod 61, an opening/closing body 6 is located above the upper guide plate 22 in the lower inner flame tube 20 and has a bush 63 crimped thereon.
4 is installed. In addition, the lower inner flame tube 2
0 and the upper inner flame cylinder 42, a disc-shaped air guide member 66 is supported by the movable rod 61 horizontally and movably up and down. This air guiding body 66
has a vent 67 in the center. and,
As shown in FIG. 2, especially when the movable rod 61 is raised, the opening/closing body 64 opens the ventilation hole 67.
By lifting the air guide body 66 while closing the air guide body 66, a ventilation gap 69 is formed between the air guide body 66 and the lower receiving body 23.

Further, the drive rod 62 is connected to a flame tube lifting mechanism (not shown) provided in the device main body 1 through a flame cylinder lifting mechanism (not shown) provided in the device main body 1, as shown in FIG. It is linked to an operating knob 76, and by operating this first operating knob 76, the upper inner flame tube 42 and the upper outer flame tube 44 can be moved up and down. Further, the lamp wick 16 is connected to a second operating knob 77 provided on the front surface of the case body 4 via a lamp up/down mechanism (not shown) provided in the device main body 1.
By operating this second operating knob 77, the lamp wick 16 can be moved up and down.

Next, the operation of the above configuration will be explained.

In addition, in the following explanation, as necessary,
Among the air holes 26 of the lower outer flame tube 27, those facing the heat reflecting portion 31u of the temperature setting plate 31 are designated by the symbol 2.
6u, the code of the part facing the heat absorption part 31l is 2.
6l to distinguish between the two.

For strong combustion, the wick 16 is raised to a high position as shown in FIG. When the lamp is burned in this state, the amount of liquid fuel such as kerosene that is vaporized increases because the amount of protrusion of the wick 16 from the fire pans 8 and 10 increases, so the amount of fuel increases. On the other hand, for weak combustion, the wick 16 is lowered to a lower position as shown in FIG. If the lamp is burnt in this state, the amount of vaporized liquid fuel will be reduced because the amount of protrusion of the wick 16 from the fire pans 8, 10 is reduced, and therefore the amount of combustion will be reduced.

By the way, as the vertical position of the lamp wick 16 changes, the position of the portion where the combustion density is high in the combustion space between the inner flame tubes 20, 42 and the outer flame tubes 27, 44 also changes. That is, when the lamp wick 16 is in a high position, the air hole 26u of the lower outer flame tube 27
The flame adheres to the lower outer flame tube 27, and the temperature of the portion of the metal outer tube 28 facing the heat reflecting portion 31u becomes the highest. Conversely, when the lamp wick 16 is at a low position, the flame adhesion area spreads to the lowest air hole 26l of the lower outer cylinder 27, and the flame adheres to the heat absorption part 31l of the metal outer cylinder 28 in the lower outer flame cylinder 27. The temperature of the opposing parts is highest.

Immediately after lowering the wick 16 from the high position to the low position, the flame tubes 20, 27, 42, and 44 temporarily became dark, and the amount of combustion appeared to decrease significantly.
After a while, the red heat returns and the amount of combustion increases.
This is a transient phenomenon caused by the movement of areas with high combustion density. In other words, in the lower outer flame tube 27, the part with high combustion density moves to the lowest air height 26l part, and this part becomes high temperature, and the temperature of the wick 16, which had become low, rises again, and the liquid fuel vaporizes. As the amount increases, the red heat returns.

The lamp wick 16 is located at a high position, and the portion with high combustion density is located at the air hole 26 in the lower outer flame tube 27.
When it is at the portion u, the lower outer flame tube 27 is
Particularly, the temperature of the part where the combustion density is high is further increased, the amount of vaporized liquid fuel is further increased, and the amount of combustion is further increased. On the other hand, when the lamp wick 16 is at a low position and the combustion density is concentrated at the lowest air hole 26l, the heat absorbing portion 31l facing this portion absorbs the radiant heat from the lower outer flame tube 27,
This prevents the portion of the lower outer flame tube 27, in particular, where the combustion density is concentrated, from increasing in temperature, further reduces the amount of vaporized liquid fuel, and further reduces the amount of combustion.

In this way, the difference between the amount of strong combustion and the amount of weak combustion is expanded by the heat reflecting section 31u and the heat absorbing section 31l, so that the amount of combustion can be significantly adjusted. Moreover, by simply adding the temperature setting plate 31 to a liquid fuel combustion device such as a conventional wick-type kerosene stove, the combustion amount can be greatly adjusted, and the structure is simple and inexpensive.

In addition, in the device of the above embodiment, in addition to adjusting the protrusion amount of the lamp wick 16, the lower inner flame tube 20, the lower outer flame tube 27, the upper inner flame tube 42, and the upper outer flame tube 44 are adjusted.
The amount of combustion can also be adjusted by combining or separating the two. That is, as shown in Figure 1,
When the movable rod 62 is lowered to lower the upper inner flame tube 42 and the upper outer flame tube 44 and connect them to the lower inner flame tube 20 and the lower outer flame tube 27, the effective volume of the combustion space increases and the draft As the effect increases, the amount of vaporization from the lamp wick 16 increases, and the amount of combustion increases. On the other hand, as shown in FIG. 2, the movable rod 61 is pushed up by the drive rod 62, and the upper inner flame tube 42 and the upper outer flame tube 44 are raised, and the lower inner flame tube 20 and the lower outer flame tube 27 are raised. When separated,
Since the effective volume of the combustion space is reduced, the draft effect is reduced, the amount of vaporization from the wick 16 is reduced, and the amount of combustion is also reduced.

In this way, by combining the adjustment of the amount of protrusion of the lamp wick 16, the action of the heat reflecting part 31u and the heat absorbing part 31l of the metal outer cylinder 28, and the connection or separation of the flame tubes 20, 27, 42, and 44, It becomes possible to greatly adjust the amount of combustion.

Note that when the flame tubes 20, 27, 42, and 44 are combined, the protrusion amount of the wick 16 increases, and the flame tubes 20, 2
The flame barrel elevating mechanism and the wick up/down mechanism may be linked so that the amount of protrusion of the wick 16 is reduced when the lamps 7, 42, and 44 are separated.

However, in practice, the inner flame cylinder and the outer cylinder may not be divided into upper and lower parts so that they can be connected and separated, but may be integrated into each other. Similarly, the glass outer cylinder may not be divided into upper and lower parts, but may be integrated.

[Effect of idea]

According to the present invention, a heat reflecting part is formed on the inner surface of the outer cylinder facing the part where the combustion density is high in the flame tube during combustion when the wick is in a high position, and Since a heat absorbing part is formed on the inner surface of the outer cylinder facing the part where the combustion density is high, the temperature of the flame tube during strong combustion is actively raised, and the temperature of the flame tube during weak combustion is actively lowered. This makes it possible to greatly adjust the amount of combustion, and by simply forming a heat reflecting part and a heat absorbing part in the outer cylinder of a conventional liquid fuel combustion device, it is possible to eliminate the difference in the amount of combustion between strong combustion and weak combustion. It can be expanded, has a simple structure, and is inexpensive.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional front view showing one embodiment of the liquid fuel combustion device of the present invention during strong combustion;
FIG. 3 is a perspective view of the vicinity of the heat reflecting section and heat absorbing section, and FIG. 4 is a perspective view of the entire structure. 16...Light wick, 17,18...Combustion tube, 20...
...lower inner flame tube which is a flame tube, 27... lower outer flame tube which is a flame tube, 28... lower metal outer tube which is an outer tube, 2
9...Lower glass outer tube which is an outer tube, 31u...Heat reflecting section, 31l...Heat absorbing section, 42...Upper inner flame tube which is a flame tube, 44...Upper outer flame tube which is a flame tube. ,
54... Upper glass outer cylinder which is an outer cylinder.

Claims (1)

[Scope of Claim for Utility Model Registration] A lamp wick whose lower part is immersed in liquid fuel and whose upper part protrudes above a fire pan and is movable up and down and whose protrusion amount from the fire pan is variable, a flame tube that covers this lamp, and In a liquid fuel combustion device comprising an outer cylinder that covers the flame tube from the outside and a combustion tube provided on the fire pan, the combustion density of the flame tube becomes high during combustion when the wick is in a high position. A heat reflecting part is formed on the inner surface of the outer cylinder facing the part, and a heat absorbing part is formed on the inner surface of the outer cylinder facing the part where the combustion density of the flame tube is high during combustion when the lamp wick is at a low position. A liquid fuel combustion device characterized by forming a part.