JPH0678801B2 - Liquid fuel combustion device - Google Patents

Description

Description: [Object of the Invention] (Field of Industrial Application) The present invention relates to a liquid fuel combustion device such as a wick type petroleum stove, and more particularly to a combustion tube for covering the wick.

(Prior Art) Conventionally, a liquid fuel combustion apparatus such as a wick type oil stove has a structure in which the amount of protrusion of the wick covered with the fuel cylinder from the fire plate portion can be finely adjusted to adjust the combustion amount. ing.

(Problems to be Solved by the Invention) However, in the above-described conventional structure, the variable range of the protrusion amount of the wick is limited to a range where exhaust gas such as carbon monoxide and carbon dioxide and odor do not deteriorate, and Since the amount of combustion can be narrowed down to about 90 to 80% of the maximum combustion amount, there is no choice but to extinguish the fire when the room temperature rises excessively, the room temperature also fluctuates greatly, and the usability is poor.

The present invention has been made in consideration of the above circumstances, and it is possible to adjust a large amount of combustion without causing deterioration of exhaust gas and to obtain a stable combustion state at all times with good combustibility. An object is to provide a liquid fuel combustion device.

[Structure of Invention]

(Means for Solving Problems) According to the present invention, a combustion including a flame cylinder that covers the wick and an outer cylinder that covers the flame cylinder is provided on a fire tray part in which the upper part of the wick, the lower part of which is immersed in liquid fuel, is projected. In a liquid fuel combustion device provided with a cylinder, the upper flame cylinder is divided into upper and lower flame cylinders constituting the combustion cylinder, and the upper flame cylinder is joined and separated from the lower flame cylinder. Is movable up and down, and an air intake port communicating with the outside is provided at an outer cylinder portion substantially corresponding to the upper end of the lower flame cylinder.

(Operation) In the liquid fuel combustion apparatus of the present invention, the effective volume of the combustion space is switched and the amount of combustion is adjusted by connecting or disconnecting the lower flame tube covering the wick and the upper flame tube. That is, the combustion amount increases when the lower and upper flame cylinders are connected, and the combustion amount decreases when they are separated. In particular, at the time of strong combustion, the outside air that has flowed in from the air intake port provided in the outer cylinder is supplied to the upper flame cylinder, and the shortage of combustion air is prevented. At this time, the heated combustion air supplied from the space between the lower flame cylinder and the outer cylinder to the upper flame cylinder reduces the cooling effect of the outside air flowing from the air intake port.
On the other hand, at the time of switching to the weak combustion, the air flowing in from the air intake becomes the secondary combustion air directly supplied to the vaporized gas flowing out from the lower flame cylinder, and stabilizes the combustion.

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

Reference numeral 1 denotes an apparatus main body. In the apparatus main body 1, a fixed tank 3 is fixed on a base 2 via a support frame 4, and a case body 5 is attached to cover the fixed tank 3. The fixed tank 3 is located on the right side when viewed from the front of the upper surface of the fixed tank 3 located inside the case body 5.
A fuel tank (not shown) for supplying a liquid fuel such as kerosene at a constant level is detachably mounted therein.

A combustion section 11 is provided on the upper left side of the fixed tank 3. Next, the structure of the combustion section 11 will be described.

An opening 12 is formed on the left side of the upper portion of the fixed tank 3, and a burner basket 14 having a substantially cylindrical shape is formed so as to surround the opening 12 and reduce the diameter through the step 13.
Is fixed, and a flange-shaped fire tray portion 15 is formed on the upper end portion of the burner basket 14. In addition, a cylindrical core guide 16 is integrally erected on the inner bottom surface of the fixed tank 3, and the upper portion of the core guide 16 faces the upper portion of the burner basket 14 with a small gap from the inside. At the same time, a regulation plate 18 is provided on the upper end surface of the burner basket 14, which has a fire tray portion 17 facing the fire tray portion 15 and is partially open. Further, in the core guide 16, a plurality of guide plates 19 which are partially opened are horizontally fixed, and the center of these guide plates 19 is slidably penetrated to move the drive rod 20 up and down. It is supported freely.

A cylindrical wick 21 made of an incombustible fiber is vertically movably supported between the burner basket 14 and the wick guide 16. The wick 21 has an upper portion which is the tray 1
It is able to project from and exit from 5, 17, and the lower part is constantly immersed in the liquid fuel in the fixed tank 3.

Further, above the fire pans 15 and 17, there are provided a lower combustion cylinder 22 and an upper combustion cylinder 23 which cover the wick 21 and are arranged in the vertical direction. Next, the structure of these combustion cylinders 22 and 23 will be described from the lower combustion cylinder 22.

A lower inner flame tube 25, which is a cylindrical lower flame tube having a large number of air holes 24, is placed on the fire tray portion 17 of the lead guide 16. Then, in the lower inner flame cylinder 25, a plurality of lower guide discs 26 that are partially opened inside are horizontally fixed, and a lower flow straightening plate base 27 is fixed to the upper end surface. An air passage port 29 is formed in the center of the lower side current plate 27.

On the other hand, on the fire tray portion 15 of the burner basket 14, a cylindrical lower flame cylinder concentrically located on the outer peripheral side of the lower inner flame cylinder 25 and having a large number of air holes 30 is formed. Lateral flame tube 31
The lower glass restraint 32 is fixed to the upper end of the lower outer flame cylinder 31 in a flange shape. Further, a lower metal outer cylinder 33, which is a substantially cylindrical lower outer cylinder and is concentrically located on the outer peripheral side, is attached to the lower portion of the lower outer flame cylinder 31. The lower metal outer cylinder 33, the lower outer flame cylinder 31, and the lower inner flame cylinder 25 are fixed to each other by a cross pin (not shown). Furthermore, a lower glass outer cylinder 34, which is a cylindrical lower outer cylinder, is placed on the upper part of the lower metal outer cylinder 33, and the upper end portion of the lower glass outer cylinder 34 is the lower glass outer cylinder 34. It is retained by the retainer 32.

A gap is formed between the lower end of the lower metal outer cylinder 33 and the lower outer flame cylinder 31, and this gap serves as a lower air intake port 35 that opens downward. Further, in the lower glass restraint 32, a plurality of communication ports 36 are formed to face the space portion between the lower outer flame cylinder 31 and the lower glass outer cylinder 34, and the outer glass A plurality of upper air intakes 37 are formed on the outer peripheral side of the cylinder 34.

The upper combustion cylinder 23 is the same as the upper inner flame cylinder 42 and the lower outer flame cylinder 31 which are cylindrical upper flame cylinders having the same diameter as the lower inner flame cylinder 25 and a large number of air holes 41. Many air holes in diameter 43
And an upper outer flame cylinder 44 which is a cylindrical upper flame cylinder having Then, in the upper internal flame cylinder 42, an upper guide disc 45 having a part opened is fixed to the lower end surface, and an upper flow straightening plate base 46 having a part opened is fixed to the upper end surface, A substantially disk-shaped upper rectifying plate 47 is fixed on the upper rectifying plate base 46. On the other hand, in the upper outer flame cylinder 44,
The first reinforcing ring 48 is fixed to the lower end,
A second reinforcing ring 49 is fixed to the upper end portion, and the reinforcing rings 48 and 49 maintain the roundness of the upper outer flame cylinder 44. Further, a pair of interlocking plates 50 protruding toward the center thereof are fixed to the first reinforcing ring 48, and the tip ends of these interlocking plates 50 are formed at the lower end of the upper internal flame cylinder 42. The upper inner flame cylinder 42 and the upper outer flame cylinder 44 are concentrically connected to each other by penetrating the elongated hole 51.

Further, the upper end of the movable rod 52 is fixed to the center of the upper rectifying plate 47 and the upper rectifying plate base 46.
Is penetrated through the center of the upper guide disc 45 and through the center of the lower guide plate 26 so as to be vertically slidable. Further, the lower end of the movable rod 52 is in contact with the upper end of the drive rod 20. Then, by the movable rod 52, above the lower inner flame cylinder 25 and the lower outer flame cylinder 31,
The upper inner flame cylinder 42 and the upper outer flame cylinder 44 are supported coaxially and vertically movable.

Further, at the center of the movable rod 52, a lower straightening vane 53 located between the upper lower guide disc 26 and the lower straightening vane 27 and having a diameter slightly smaller than the air passage port 29 thereof. When the movable rod 52 is lowered, the lower rectifying plate 53 is fixed and the air passage port 29 is opened, and when the movable rod 52 is raised, the lower rectifying plate 53 is almost closed.

Further, on the lower glass restraint 32, located on the outer peripheral side of the upper air intake 37, the upper glass outer cylinder is a cylindrical upper outer cylinder having a diameter larger than that of the lower glass outer cylinder 34. Through 54
Is placed. And, this upper glass outer cylinder 54,
The upper inner flame cylinder 42 and the upper outer flame cylinder 44 are concentrically located on the outer peripheral side of the upper inner flame cylinder 42 and the upper outer flame cylinder 44.
It covers the range of motion of 44. Further, an upper glass retainer 55 held by three support rods 32a standing on the lower glass retainer 32 is fixed to the upper end surface of the upper glass retainer 54. An exhaust port 56 having a diameter larger than that of the upper flow straightening plate 47 is formed in the central portion. The upper flow straightening plate 47 opens the exhaust port 56 when the movable rod 52 descends, and is positioned inside the exhaust port 56 when ascending.

Further, the drive rod 20 is connected to the case body 5 through a flame tube lifting mechanism (not shown) provided in the apparatus body 1.
It is interlocked with a first operation knob 61 provided on the front surface of the above, and by operating this first operation knob 61, the upper inner flame cylinder 42 and the upper outer flame cylinder 44 can be moved up and down. Has become. Further, the wick holder 62 fixed to the outer peripheral surface of the wick 21 is connected to the case body 5 through a wick up / down mechanism (not shown) provided in the apparatus body.
It is interlocked with a second operation knob 63 provided on the front surface of the lamp. By operating the second operation knob 63, the wick 21 can be moved up and down.

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

In the case of strong combustion, as shown in FIG. 1, the movable rod 52 is lowered, and the upper inner flame cylinder 42 and the upper outer flame cylinder 44 interlocking with the movable rod 52 are lowered. Then, the first reinforcing ring 48 is airtightly joined to the lower glass restraint 32, and the upper guide disc 45 is airtightly joined to the lower straightening vane plate 27, so that the upper inner flame tube 42 and the upper outer flame tube are joined together. 44 is joined to the lower inner flame cylinder 25 and the lower outer flame cylinder 31 to increase the effective volume of the combustion space and increase the amount of combustion.

At this time, on the lower outer flame cylinder 31 side, the outside air that has flowed in from the outside through the lower air intake port 35 is used as combustion air from the air hole 30 of the lower outer flame cylinder 31 to the lower outer flame. It is supplied to the combustion space between the cylinder 31 and the lower inner flame cylinder 25. by the way,
Between the lower outer flame cylinder 31 and the upper outer flame cylinder 44, since the lower glass restraint 32 is present, the draft action is reduced, but the outside air flowing in from the outside through the upper air intake port 37 is The upper outer flame cylinder 44 and the inner flame cylinder above the air hole 43 of the outer flame cylinder 44.
The combustion air is supplied to the combustion space between the upper and outer flame cylinders 42, and the shortage of combustion air on the upper outer flame cylinder 44 side is prevented. Also, the lower outer flame tube 31
And the combustion air supplied from the space between the lower glass outer cylinder 34 to the upper outer flame cylinder 44 side through the communication port 36 is already sufficiently heated by the combustion heat of the lower combustion cylinder 22 side, The cooling effect by the outside air flowing in from the upper air intake port 37 is reduced. Therefore, it is possible to obtain a stable combustion state with a good degree of red heat.

On the other hand, on the inner flame cylinders 25, 42 side, from the lower end opening of the lead guide 16, the opening 19a of the guide plate 19 and the opening 18a of the restriction plate 18 are formed.
The outside air flows into the lower inner flame tube 25 via the, and as combustion air, the lower air is further passed through the opening 26a of the lower guide disk 26 and the air hole 24 of the lower inner flame tube 25. It is supplied between the inner flame cylinder 25 and the lower outer flame cylinder 31. Further, at the time of strong combustion, the air passage port 29 of the lower baffle plate base 27 is opened, so that the combustion air also flows into the upper inner flame tube 42 through this air passage port 29, and the air It is supplied between the upper inner flame cylinder 42 and the upper outer flame cylinder 44 through the hole 41.

Further, in the case of weak combustion, as shown in FIG. 2, the upper inner flame cylinder 42 and the upper outer flame cylinder 44 are raised together with the movable rod 52 to move from the lower inner flame cylinder 25 and the lower outer flame cylinder 31. To separate.
In this state, the effective volume of the combustion space becomes small, so the combustion amount also becomes small. In addition, as the combustion space decreases, the draft effect decreases, and the vaporizing effect of liquid fuel also declines,
It is commensurate with weak combustion.

In particular, when switching from strong combustion to weak combustion, a red fire transiently occurs between the lower inner flame cylinder 25 and the lower outer flame cylinder 31, but as described above, the draft action rapidly decreases. In addition, the secondary combustion air in which the outside air flowing in from the air intake port 37 is supplied to the vaporized gas discharged from the lower inner flame cylinder 25 and the lower outer flame cylinder 31, that is, the vaporized gas of the liquid fuel. Therefore, it stabilizes to a weak combustion promptly.

Further, at the time of weak combustion, the lower inner flame cylinder 25 and the upper inner flame cylinder 42
Since the air passage port 29 between them is almost closed by the lower side current plate 53, the draft to the upper inner flame cylinder 42 is cut off, and
Almost all of the outside air that has flowed into the lower inner flame cylinder 25 is consumed by the lower combustion cylinder 22 side, and stable weak combustion can be obtained.

Further, when the combustion mode is switched from the weak combustion mode to the strong combustion mode, the combustion space is increased as described above, so that the draft action is rapidly activated and the vaporization amount is increased.

According to the above configuration, since the upper and lower inner flame cylinders 25, 42 and the outer flame cylinders 31, 44 are combined and separated to adjust the combustion amount, the combustion amount can be significantly adjusted. For example, the combustion amount during weak combustion can be set to 60 to 50% of the combustion amount during strong combustion.

In addition, since the combustion amount can be reduced without reducing the protrusion amount of the wick 21 from the fire tray portions 15 and 17 as described above, deterioration of exhaust gas due to cooling of the combustion exhaust gas due to excessive lowering of the wick 21 as in the conventional case or The generation of odor can be prevented.

In this way, the image of the conventional oil stove can be renewed.

Also, in particular, the diameter of the upper glass outer cylinder 54 should be
By making the diameter larger than the above, it is possible to easily provide the upper combustion tube 23 with the upper air intake 37 in addition to the lower air intake 35 of the lower combustion cylinder 22. Further, by providing the upper air intake port 37, it becomes easier to balance the combustion as described above.

Further, when changing the variable width of the combustion amount by changing the height ratio between the lower combustion cylinder 22 and the upper combustion cylinder 23, the opening areas of the upper air intake port 37 and the communication port 36 and their ratios are set. The amount of combustion air supplied to the upper combustion cylinder 23 can be adjusted only by appropriately setting, and the combustion balance can be set by the upper combustion cylinder 23 alone. Therefore, it is possible to respond to and adjust the change in the variable width of the combustion amount in a short time, and it is possible to reduce the manufacturer cost.

Further, a lower metal outer tube 33, a lower glass outer tube 33 that covers the lower inner flame tube 25, the lower outer flame tube 31, the upper inner flame tube 42, and the upper outer flame tube 44.
Since the 34 and the upper glass outer cylinder 54 are integrally fixed regardless of the vertical movement of the upper inner flame cylinder 42 and the upper outer flame cylinder 44, a safe feeling can be obtained and stable combustion can be achieved. can get.

In the above embodiment, the upper glass outer cylinder 54 and the lower glass outer cylinder 34 are separated, and the air intake port is formed in the divided portion.
Although the configuration in which 37 is provided has been described, the present invention is not limited to this, and for example, the upper glass outer cylinder and the lower glass outer cylinder are formed as an integral cylindrical body having the same diameter without being separated, Even if a plurality of air intakes are formed at a portion substantially corresponding to the upper end of the lower flame tube, the same effect can be obtained. In this case, lower glass holder 32
The outer peripheral portion may contact the inner peripheral surface of the glass outer cylinder.

〔The invention's effect〕

According to the present invention, the combustion amount is adjusted by combining and separating the vertically divided flame cylinders, so that the combustion amount can be significantly adjusted without causing deterioration of exhaust gas and the like.
Since an air intake port that communicates with the outside is provided in the outer cylinder portion that substantially corresponds to the upper end of the lower flame tube, for example, during strong combustion with the upper and lower flame tubes combined, combustion in the upper flame tube Insufficient air and cooling can be prevented, and at the time of weak combustion with the flame tube separated, stabilization to weak combustion is promptly performed.

[Brief description of drawings]

FIG. 1 is a sectional view showing one embodiment of the liquid fuel combustion apparatus of the present invention during strong combustion, FIG. 2 is a sectional view during weak combustion, and FIG.
FIG. 4 is a plan view of the upper part of the combustion cylinder, FIG. 4 is a plan view in which a part of the joint between the lower combustion cylinder and the upper combustion cylinder is cut away, and FIG. 5 is a perspective view of the whole. 15, 17 ... Tray part, 21 ... Wick, 22 ... Lower combustion cylinder, 23 ... Upper combustion cylinder, 25 ... Lower inner flame cylinder which is a lower flame cylinder, 31 ... Lower flame cylinder Lower outer flame cylinder, 33 ... Outer cylinder, 34 ... Glass outer cylinder, 37 ... Air intake port, 42 ... Upper inner flame cylinder that is the upper flame cylinder, 44 ... Upper outer flame cylinder that is the upper flame cylinder, 54 … A glass barrel.

Claims (1)

[Claims] Claims: 1. Combustion provided on the above-mentioned platter part, which comprises a wick whose lower part is immersed in liquid fuel and whose upper part is projected above the pit part, a flame tube covering this wick and an outer tube covering this flame tube. In a liquid fuel combustion apparatus including a cylinder, the combustion cylinder is divided into upper and lower flame cylinders, and an upper flame cylinder is vertically movable so that it can be combined with and separated from a lower flame cylinder. A liquid fuel combustion apparatus, characterized in that an air intake communicating with the outside is provided in an outer cylinder portion substantially corresponding to the upper end of the flame cylinder.