JPH0722575Y2 - Liquid fuel combustion device - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial field of application) The present invention relates to a liquid fuel combustion device such as a wick type oil stove used for heating at home, etc. Adjustable liquid fuel combustion device.

(Prior Art) Conventionally, it was difficult to adjust the combustion amount in the wick type oil stove because the amount of protrusion of the wick was constant, but after that, the exhaust gas characteristics, especially CO / CO ₂ did not deteriorate. Petroleum stoves have become common because the amount of protrusion of the wick can be adjusted within an allowable range and the amount of combustion can be adjusted. However, the combustion amount of this kind of oil stove is 90-80% of the maximum combustion amount.
Since the room temperature can be adjusted only, the fire must be extinguished when the room temperature rises excessively, or the window must be opened to adjust the room temperature, which is disadvantageous in terms of operability and economy. And the reason why you can adjust the combustion amount a little in this way is
During weak combustion with a small amount of protrusion of the wick, a flame is formed in the combustion chamber, which causes the unburned gas containing high-concentration CO that has leaked from the combustion chamber into the inner flame of the combustion cylinder to be released directly into the atmosphere. This is because the total amount of hydro carbon is increased and CO / CO ₂ is deteriorated to generate an odor.

Therefore, as disclosed in Japanese Patent Laid-Open No. 62-108909, the inner flame of the combustion cylinder extends from the vicinity of the position facing the wick to a position below the upper end of the inner flame, and the inner flame By providing a control fluid that shields the flow control area formed between the cylinder and its bottom surface, high-concentration CO leaked into the flow control area
There has been proposed a combustion device in which unburned gas containing is shielded by a clean air flow supplied to the upper side of the inner flame cylinder so that the unburned gas is not directly released into the atmosphere.

However, in such a structure of the combustion device, due to the control fluid provided inside the inner flame cylinder, it becomes difficult for the air necessary for combustion to be supplied from the inside of the inner flame cylinder into the combustion chamber, and the amount of protrusion of the wick is increased. The amount of air commensurate with the changing amount of vaporized gas is not supplied, and an unstable combustion state is likely to occur. In particular, during strong combustion with a large amount of protrusion of the wick, the amount of air tends to be insufficient with respect to the amount of vaporized gas, and the amount of heat generated tends to decrease.

(Problems to be Solved by the Invention) In the above-described conventional technology, unburned gas containing high concentration of CO leaked into the inner flame cylinder during weak combustion with a small amount of protrusion of the wick is directly released into the atmosphere. To prevent this, a control fluid is provided inside the inner flame tube, so it becomes difficult to supply the proper amount of air commensurate with the amount of vaporized gas, and an unstable combustion state and a drop in the calorific value are likely to occur. There was a problem.

Therefore, the present invention prevents the rapid deterioration of the combustion characteristics during weak combustion, and also enables the supply of an air amount commensurate with the amount of vaporized gas to improve the combustion efficiency during combustion, resulting in stable combustion with good combustion characteristics. It is an object of the present invention to provide a liquid fuel combustion apparatus which has a state and is capable of drastically adjusting the combustion amount.

[Structure of the Invention] (Means for Solving the Problem) The present invention is provided with a wick lifting mechanism 44 that raises the wick 13 to the combustion range in conjunction with the movement of the operating body 52, and is provided with the outer cylinder 25 and a large number of air holes. Outer flame cylinder 21 and inner flame cylinder 1 formed with 15 and 20, respectively
6 and a combustion cylinder 14 that covers the wick 13 is provided, and the outer cylinder 2
An air restricting portion 27 capable of communicating in the vertical direction is provided between the outer flame cylinder 5 and the outer flame cylinder 21, and an adjusting outer cylinder 33 and an adjusting inner cylinder 32 having air supply holes 34, 35 are provided at corresponding positions on the lower side surfaces thereof. ,
The inner flame cylinder 16 of the combustion cylinder 14 is an air-conditioning cylinder 31 that is made expandable and contractible by moving the adjustment outer cylinder 33 or the adjustment inner cylinder 32 up and down.
It is provided inside and is linked to the movement of the operating body 52, and is an air adjustment cylinder.
31 is provided with an air adjustment tube expansion / contraction mechanism 45 that expands / contracts, and as the wick 13 is lowered by the operation of the operating body 52, the air adjustment tube 31 expands and the air supply holes 34, 35 gradually become incompatible. Then, as the wick 13 rises, the air adjusting cylinder 31 shrinks and the air supply holes 34, 3
5 is configured so that it gradually becomes compatible and opens,
Moreover, the air supply hole is made to substantially correspond to the air restriction portion 27.
34, 35 are provided, and the air holes 20 formed in the outer flame cylinder 21 are further provided.
The opening ratio of the upper part of the outer flame cylinder 21 is larger than that of the lower part of the outer flame cylinder 21 with the air restriction portion 27 as a boundary.

(Operation) With the above-described configuration, the present invention operates the operation body 52 to operate the wick.
At the time of weak combustion in which the protruding amount of 13 is reduced, the air control cylinder 31 extends and the air supply holes 34 and 35 are closed. As a result, the unburned gas leaked from the combustion chamber 28 formed between the outer flame cylinder 21 and the inner flame cylinder 16 into the inner flame cylinder 16 expands and the air supply holes 34, 3
5 is introduced between the closed air-conditioning cylinder 31 and the inner flame cylinder 16, and this unburned gas of the air-conditioning cylinder 31 is mixed with the clean air supplied upward through the inside of the air-conditioning cylinder 31. It is supplied into the combustion chamber 28 from the vicinity of the upper end, and combustion is promoted. Also,
As the protrusion amount of the wick 13 is increased by operating the operation body 52, the air adjustment cylinder 31 is reduced in conjunction with this and the air supply holes 34 and 35 gradually open in a body-corresponding state and are generated from the wick 13. An appropriate amount of air corresponding to the amount of vaporized gas is supplied into the combustion chamber 28 from the air supply holes 34 and 35 of the air adjusting cylinder 31,
A stable combustion state can be obtained. Further, during strong combustion in which the protrusion amount of the wick 13 is increased by operating the operation body 52, the air supply holes 34 and 35 are superposed and fully opened, and a large amount of air is generated in the air hole 15.
While being supplied through the air restriction portion 27, the pressure above the air restriction portion 27 is reduced and unburned gas leaks from the outer flame cylinder 21 to the outside through the air hole 20a, and again inside the air hole 20a and the outer flame cylinder 16 ,twenty one
The outer flame tube 21 can be turned into red heat by returning to the interval.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 3, reference numeral 1 denotes a base on which a fixed tank 2 is fixed via a support frame (not shown). Further, a fuel tank (not shown) for supplying a liquid fuel such as kerosene to the fixed tank 2 at a constant level is detachably mounted on one side of the upper surface of the fixed tank 2.

A combustion section 3 is provided on the other side above the fixed tank 2. Next, the structure of the combustion unit 3 will be described with reference to FIGS.
It will be described with reference to the drawings.

An opening 4 is formed on the other side of the upper portion of the fixed tank 2, and a substantially cylindrical burner basket 6 having a reduced diameter at the upper portion is fixed around the opening 4 via a step 5. The burner basket 6 has a stepped portion 7 that spreads outward at the upper portion, and a flange-shaped fire tray portion 8 is formed at the upper end portion. A large number of air holes 9 are provided in the burner basket 6 located between the step portion 7 and the fire tray portion 8. Further, a cylindrical core guide 10 is integrally erected on the inner bottom surface of the fixed tank 2, and the upper part of the core guide 10 faces the upper part of the burner basket 6 with a small space from the inside. At the same time, a wick guide portion 12 is provided on the upper end surface of the burner basket 6 so as to face the stepped portion 7 below the fire tray portion 8 of the burner basket 6 and a partially opened lead guide cap 12 is provided. ing.

A cylindrical wick 13 made of incombustible fiber is supported between the burner basket 6 and the wick guide 10 so as to be vertically movable.
The lower part is always immersed in the liquid fuel in the fixed tank 2.

Further, a combustion cylinder 14 that covers the wick 13 is provided above the fire plates 8 and 11. Next, the structure of the combustion cylinder 14 will be described.

A cylindrical inner flame tube 16 having a large number of air holes 15 is placed on the fire tray 11 on the side of the lead guide 10. Then, the straightening plate base in which the air passage port 17 is formed on the upper end surface of the inner flame cylinder 16
18 is fixed, and the current plate 19 is fixed on the current plate base 18.

On the other hand, a cylindrical outer flame cylinder 21 having a large number of air holes 20 is concentrically located on the outer peripheral side of the inner flame cylinder 16 on the burner portion 8 of the burner basket 6. A glass stopper 22 is fixed to the upper end of the outer flame tube 21 in a flange shape. A substantially cylindrical metal outer cylinder 23, which is concentrically located on the outer peripheral side of the outer flame cylinder 21, is attached by a cross pin (not shown) to the outer flame cylinder 21.
A glass outer cylinder 24 is attached between the glass holder 22 and the glass holder 22. Further, a gap is formed between the lower end of the metal outer cylinder 23 and the burner portion 8 of the burner basket 6, and this gap serves as an air intake port 23a that opens downward. The metal outer cylinder 23 and the glass outer cylinder 24 constitute an outer cylinder 25. In addition, a flange-shaped air restriction portion 27 is formed at the upper end of the metal outer cylinder 23 so as to be able to communicate in the vertical direction via a step portion 26.

A combustion chamber 28 is formed in the combustion cylinder 14 between the inner flame cylinder 16 and the outer flame cylinder 21, and the outer flame cylinder 21 above the air restriction portion 27 of the metal outer cylinder 23, that is, the outer flame cylinder A red heating portion 29 is formed on the upper part of the flame tube 21, and the air hole 20a of the red heating portion 29 is formed.
Is formed with a larger opening ratio than the outer flame cylinder 21 below the air restriction portion 27, that is, the air hole 20b in the lower part of the outer flame cylinder 21 and the air hole 15 of the inner flame cylinder 16.

Further, a guide disc 30 having a part opened inside is horizontally fixed to the lower portion of the inner flame cylinder 16, and the inner peripheral side of the inner flame cylinder 16 is provided on the guide disc 30. A concentric position is provided with an expandable / contractible air control cylinder 31. The air adjusting cylinder 31 has an adjusting inner cylinder 32 and an adjusting outer cylinder 33, and a large number of large air supply holes 34, 35 are provided at corresponding positions on the lower side surfaces of the adjusting inner cylinder 32 and the adjusting outer cylinder 33, respectively. The air supply holes 34 and 35 are provided so as to substantially correspond to the air restriction portion 27. The lower end portion of the adjusting inner cylinder 32 is fitted and fixed to a step portion 36 formed upright on the guide disc 30, and a guide disc 38 having a large number of air holes 37 is fixed to the upper end portion thereof. Has been done. On the other hand, the adjusting outer cylinder 33 has a disc 40 having a large number of air holes 39 at the upper end.
Is fixed horizontally, and this disc 40 is
Is mounted on the upper end of the. Then, in a state where the air supply hole 34 of the adjustment inner cylinder 32 and the air supply hole 35 of the adjustment outer cylinder 33 are fully opened at positions corresponding to each other, the adjustment outer cylinder 33 is adjusted to the adjustment inner cylinder 32.
The adjustment inner cylinder 32 is entirely surrounded by maintaining a slight gap on the outer peripheral side. Further, the guide disc 30 of the inner flame tube 16
A large number of air holes 41 are provided around the outer periphery of the adjusting inner cylinder 32.

Further, a movable rod 42 is vertically provided at the center of the air adjusting cylinder 31, and the movable rod 42 guides the guide disk 30 of the inner flame cylinder 16 and the guide disk 38 of the adjusting inner cylinder 32. While slidably penetrating through the center of the disk, the upper end thereof penetrates and is locked in the center of the disk 40 of the adjusting outer cylinder 33, and the snap ring 43 is attached to the protruding end from the disk 40. Is provided to prevent it from coming off. Further, the lower end of the movable rod 42 reaches the inside of the core guide 10.

Further, on the front side of the fixed tank 2, there are provided a wick raising / lowering mechanism 44 for moving the wick 13 up and down, and an air adjusting tube extending / contracting mechanism 45 for expanding / contracting the air adjusting tube 31 by moving the adjusting outer tube 33 up and down. It is provided. Next, the configurations of the wick raising / lowering mechanism 44 and the air-conditioning tube expansion / contraction mechanism 45 will be described.

A vertical axis 46 of the core is rotatably and horizontally inserted through and supported by the fixed tank 2.
A pair of lifting plates 47 are fixed inside the.
The lifting plate 47 is provided at a right angle to the core vertical shaft 46, and is positioned on both side surfaces of a cylindrical core holder 48 fixed to the outer peripheral surface of the wick 13. Further, an L-shaped long groove 49 is formed at the tip of each lifting plate 47, and a core holder shaft 50 protruding from both side surfaces of the core holder 48 is engaged with the long groove 49. The wick 13 moves up and down in association with the rotation of the wick vertical shaft 46.

A support plate 51 is erected on the base 1 at a position rearward of one end of the core vertical shaft 46.
A base end of an operating lever 53, which is arranged in a direction orthogonal to the core vertical shaft 46 and has an operating knob 52 as an operating body at its tip, is rotatably supported in the vertical direction. Further, one end of the interlocking lever 54 provided in parallel to the operation lever 53 toward the base end side of the operation lever 53 is fixed to one end of the core vertical shaft 46, and the other end of the interlocking lever 54 is fixed. The shaft 55 is fixed to the operation lever 53 side, and
Further, the shaft body 55 is engaged with the operation lever 53 in a long hole 53a formed on the front side of the shaft support portion at the base end. When the operation lever 53 is rotated in the vertical direction by operating the operation knob 52, the interlocking lever 54 pivots in the vertical direction about the core vertical shaft 46 as a fulcrum. 46 rotates so that the wick 13 moves up and down.

Next, the configuration of the air-conditioning tube expansion / contraction mechanism 45 will be described.

The horizontal portion of the drive shaft 57 is located on the lower side of the fixed tank 2 on the base 1 so as to be rotatable and horizontal via a shaft support member 56.
57a is supported. This horizontal portion 57a is the core vertical shaft 46.
It is provided in parallel with the operation lever 5 of this horizontal part 57a.
A bent portion 57b formed by bending in parallel with the operation lever 53 is provided at the end on the 3 side, and an engaging portion that engages with the lower portion of the operation lever 53 is provided at the end of the bent portion 57b. 57c is bent. Further, a bent portion 57d formed by bending toward the center of the core guide 10 is provided at an end portion of the horizontal portion 57a on the core guide 10 side, and further, an end portion of the bent portion 57d is provided. The engaging portion 57e is bent and formed. On the other hand, in the lead guide 10, a guide plate 58 having a partly opened is horizontally fixed, and slides on a guide portion 12a formed at the central portion of the guide plate 58 and the central portion of the lead guide cap 12. A drive rod that penetrates as much as possible and whose upper end abuts on the lower end of the movable rod 42.
59 is supported so as to be movable up and down, and a shift plate 61 having a long hole 60 is fixed to the lower end of the drive rod 59. The engaging portion 57e of the drive shaft 57 is engaged with the long hole 60 of the shift plate 61, and the drive rod 59 moves up and down in association with the rotation of the drive shaft 57. ing.

A spring 62 is wound around the drive shaft 57,
One end of the spring 62 is engaged with the lower portion of the bent portion 57b of the drive shaft 57, and the other end is locked on the base 1 to urge the drive shaft 57 to always rotate upward. . As a result, the engaging portion 57c of the drive shaft 57 is elastically engaged with the operating lever 53 by the bias of the spring 62, and the operating knob 52 is operated to rotate the operating lever 53 upward. Then, the interlocking lever 54 pivots upward to lower the wick 13, and the drive shaft 57 pivots upward due to the bias of the spring 62 to raise the drive rod 59, and conversely pivots the operating lever 53 downward. Then, the interlocking lever 54 rotates downward and the wick 13 moves up,
The drive shaft 57 rotates downward against the bias of the spring 62 to lower the drive rod 59.

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

First, the operation of the wick raising / lowering mechanism 44 and the air-conditioning tube expansion / contraction mechanism 45 will be described.

As shown in FIG. 2 and FIG. 4, when the operating knob 52 is pushed downward, the operating lever 53 pivots downward with the fulcrum of the proximal end as a fulcrum, and the interlocking lever 54 moves up and down the shaft 55 through the shaft 55. The shaft 46 is pivoted downward as a fulcrum, the core vertical shaft 46 and the lifting plate 47 are pivoted clockwise together with the interlocking lever 54, and the wick 13 is largely projected onto the fire tray 8. Further, with the rotation of the operation lever 53, the engaging portion 57c of the drive shaft 57 elastically engaged with the operation lever 53.
Is pushed down, the drive shaft 57 moves the spring 62
Rotate downward against the bias of. And the shift plate 61
And the drive rod 59 has the long hole 60 of the shift plate 61 and the engaging portion 57.
The movable rod 42 and the adjusting outer cylinder 33 of the air adjusting cylinder 31 descend due to its own weight by the engagement with e, the movable rod 42 and the adjusting outer cylinder 33 of the air adjusting cylinder 31 are reduced, and the adjusting outer cylinder 33 reduces the adjusting inner cylinder 32. The air supply hole 35 of the adjusting outer cylinder 33 and the adjusting inner cylinder 32
The air supply holes 34 are located at corresponding positions and are fully opened to be in a strong combustion state.

Here, for example, when a heater (not shown) is energized to contact the protruding wick 13, the wick 13 is ignited to start combustion. When the operating knob 52 is pushed up to adjust the amount of combustion during this combustion operation as shown in FIGS. 1 and 3, the operating lever 53 rotates upward and the interlocking lever 54 also rotates upward to move the core. The vertical shaft 46 and the lifting plate 47 rotate in the counterclockwise direction, and the protrusion amount of the wick 13 gradually decreases. Further, with the upward rotation of the operation lever 53, the drive shaft 57 is rotated upward by the urging force of the spring 62, and the shift plate 61 and the drive rod 59 are raised, whereby the drive rod 59 is moved. 42 is pushed up, and the adjustment outer cylinder 33 rises together with the movable rod 42. At this time, the air supply hole 35 of the adjustment outer cylinder 33 and the air supply hole 34 of the adjustment inner cylinder 32 are moved to non-corresponding positions, and only a part thereof is opened. That is, the operating knob
As the protrusion amount of the wick 13 becomes smaller by the operation of 52, the adjustment outer cylinder 33 gradually rises and the air supply holes 34, 3
In the case of 5, the number of overlapping portions gradually decreases and the opening amount decreases. On the contrary, as the protruding amount of the wick 13 increases, the adjusting outer cylinder 33 gradually descends, so that the air supply holes 34 and 35 gradually increase their overlapping portions and the opening amount increases.
In this way, the air supply hole adapted to the protrusion amount of the wick 13
An opening amount of 34,35 is obtained. And FIG. 1 and FIG.
As shown in the figure, when the protrusion amount of the wick 13 is made small, that is, when the upper end of the wick 13 slightly protrudes from the fire tray 11, the adjustment outer cylinder 33 rises by about 1/3 of its entire length, and the air adjustment cylinder 3
1 extends to a height of approximately 2/3 or more of the total length of the inner flame cylinder 16.
As a result, the air supply holes 34 and 35 are in non-corresponding positions, and the air supply hole 34 is substantially closed by the side wall of the adjustment outer cylinder 33, and the air supply hole 35 is closed by the side wall of the adjustment inner cylinder 32, resulting in a weak combustion state.

To extinguish the fire, push up the operating knob 52 strongly. Then, the core vertical shaft 46 and the lifting plate 47 integrally rotate largely in the counterclockwise direction via the interlocking lever 54, and the wick 13 is lowered and retracted, whereby the fire is extinguished. In this case, the angle at which the drive shaft 57 rotates upward due to the bias of the spring 62 is determined by the long hole 60 of the shift plate 61 and the engaging portion 57e.
The engaging portion 57c is disengaged from the operation lever 53 because the engagement portion 57c is restricted by the engagement with.

Next, the combustion action will be described.

Combustion starts when the wick 13 is ignited, high temperature unburned gas due to combustion rises in the combustion chamber 28 to generate draft force, and combustion air causes air holes 15 of the inner flame cylinder 16 and outer flame cylinder 21 to burn. The air is supplied from the air holes 20 into the combustion chamber 28 to continue combustion.
At this time, the combustion air supplied from the air hole 15 of the inner flame cylinder 16 into the combustion chamber 28 is the air hole 41 of the guide disk 30 and the air adjusting cylinder.
Combustion air supplied from the air holes 37, 39 in the upper part of 31 and the air supply holes 34, 35 in the side parts and supplied from the air holes 20 of the outer flame cylinder 21 into the combustion chamber 28 is the metal outer cylinder 23. Air intake 23a
Supplied from

Then, as shown in FIG. 2, during strong combustion in which the amount of protrusion of the wick 13 is large, a flame F ₁ is formed at the upper end of the combustion chamber 28, and the air supplied from the inside of the inner flame tube 16 is as shown by the arrow. Guide disc
A large amount of air is supplied to the combustion chamber 28 side from the air holes 41 of 30, the air supply holes 34 and 35 that are fully opened at the corresponding positions of the reduced air control cylinder 31, and the air holes 37 and 39 above the air control cylinder 31. It Furthermore, part of the air that has flowed in from the air intake port 23a is part of the air hole 2
0b flows into the combustion chamber 28, and the remaining air is the air control unit
It goes up through 27 and becomes a negative pressure state on the air control section 27. Therefore, the unburned gas in an incompletely combusted state leaks from the combustion chamber 28 to the outside of the upper portion of the outer flame cylinder 21 through the air hole 20a having a large opening ratio in the central portion of the outer flame cylinder 21, and again the air hole. By flowing into the combustion chamber 28 from 20a and exhausting from above, the red heat degree of the red heat portion 29 of the outer flame tube 21 can be increased.

Further, as shown in FIG. 1, during weak combustion in which the amount of protrusion of the wick 13 is small, the flame F ₂ is formed in a state of falling into the combustion chamber 28, and the air supplied from the inside of the inner flame tube 16 is Since the air adjusting cylinder 31 extends and the air supply holes 34, 35 are closed, a small amount is supplied from the air hole 41 of the guide disk 30 as shown by the arrow, and the air above the air adjusting cylinder 31 in the expanded state is supplied. A large amount is supplied from the hole 39. Then, the air hole 15 at the bottom of the inner flame tube 16
The air supplied from the inside to the combustion chamber 28 becomes a mixed gas with the vaporized fuel and rises in the combustion chamber 28. At this time, since the space 63 between the inner flame cylinder 16 and the air conditioner cylinder 31 in the expanded state becomes negative pressure due to the air supplied from above the air conditioner cylinder 31, a part of the mixed gas is in the inner flame cylinder. 16 Flows into the space 63 inward, mixes with the air from the air holes 41 of the guide disk 30, rises in the space 63, and is supplied above the air adjusting cylinder 31 near the upper end of the air adjusting cylinder 31. The mixed air is supplied again to the inside of the combustion chamber 28 through the air hole 15 of the inner flame cylinder 16, forms flame holding in this portion, and is completely burned by the flame F ₂ formed thereabove. . In this way, unburned gas containing high concentrations of CO is prevented from being released directly into the atmosphere, and CO / CO ₂
To prevent the generation of odors.

Further, since the air supply holes 34 and 35 of the air adjusting cylinder 31 are opened in an amount adapted to the protruding amount of the wick 13, the combustion is performed in the combustion chamber 28 in an appropriate amount corresponding to the generated amount of vaporized gas. Air for supply is supplied and a stable combustion state is obtained,
At the time of strong combustion, the air control cylinder 31 shrinks and the air supply holes 34, 35
Since it is fully opened and a large amount of air is supplied, a high calorific value can be obtained.

According to the above-mentioned embodiment, the adjusting inner cylinder 32 and the adjusting outer cylinder 3 provided with the air supply holes 34 and 35 at the corresponding positions on the respective lower side surfaces.
An air adjustment cylinder 31 is provided, which includes the adjustment inner cylinder 32 and the adjustment outer cylinder 33, and is provided with an air adjustment cylinder expansion / contraction mechanism 45 that expands / contracts the air adjustment cylinder 31 in conjunction with the movement of the operation knob 52. As the wick 13 is lowered by operating the operation knob 52, the air adjusting cylinder 31 extends and the air supply hole 3
4,35 gradually become non-compliant and closed, and as the wick 13 is raised, the air adjusting cylinder 31 shrinks and the air supply holes 34,35 gradually become corresponding and open. As a result, it is possible to prevent the combustion characteristics from rapidly deteriorating during weak combustion and to greatly adjust the combustion amount.

Furthermore, the corresponding air supply holes for the adjustment inner cylinder 32 and the adjustment outer cylinder 33
Almost corresponding to 34, 35, an air restriction portion 27 capable of communicating in the vertical direction is provided between the outer flame cylinder 21 and the outer cylinder 25, and with this air restriction portion 27 as a boundary, the external flame caused by the air hole 20a. By making the opening ratio of the upper part of the cylinder 21 larger than the opening ratio of the lower part of the outer flame cylinder 21 by the air holes 20b, the positions of the unburned gas and the combustion reaction part can be adjusted, and the red heat degree of the outer flame cylinder 21 can be easily adjusted. The combustion adjustment range can be set to a large value.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, the expansion and contraction of the air adjustment cylinder may be achieved by locking the movable rod to the adjustment inner cylinder side and removing the disc of the adjustment outer cylinder to move the adjustment inner cylinder up and down. The number and shape of the air supply holes may be selected as appropriate.
Further, the opening ratios of the outer flame cylinders may differ from each other by providing air holes having the same diameter in a coarse and dense manner.

[Advantages of the Invention] The present invention is provided with an adjusting outer cylinder and an adjusting inner cylinder having air supply holes at positions corresponding to each other on the lower side surface, and can be expanded and contracted by moving the adjusting outer cylinder or the adjusting inner cylinder up and down. The air-conditioning cylinder is provided in the inner flame cylinder of the combustion cylinder, and the air-conditioning cylinder expanding / contracting mechanism that expands / contracts the air-conditioning cylinder in association with the movement of the operating body is provided, and the wick is lowered by operating the operating body. The air adjusting cylinder expands and the air supply hole gradually becomes unsupported and closed, and as the wick rises, the air adjusting cylinder contracts and the air supply hole gradually becomes compatible. By doing so, it is possible to prevent the rapid deterioration of the combustion characteristics during weak combustion, further provide the air supply hole substantially corresponding to the air restriction portion, and the air hole formed in the outer flame cylinder is Air control unit By making the aperture ratio of the upper part of the outer flame cylinder as a boundary larger than the aperture ratio of the lower part of the outer flame cylinder, the positions of the unburned gas and the combustion reaction portion can be adjusted, and the red flame conversion of the outer flame cylinder can be easily adjusted. In addition, the combustion adjustment range can be set large.

[Brief description of drawings]

FIG. 1 is a sectional view of a combustion section showing weak combustion, FIG. 2 is a sectional view of the combustion section showing strong combustion, and FIG. 3 is a partially cutaway perspective view showing the case of weak combustion, FIG. [Fig. 4] is a partially cutaway perspective view of the whole showing a state of strong combustion. 13 ...... wick 14 …… combustion cylinder 15,20, 20a, 20b …… air hole 16 …… inner flame cylinder 21 …… outer flame cylinder 25 …… outer cylinder 27 …… air control section 31 …… air control cylinder 32 …… Adjustment inner cylinder 33 …… Adjustment outer cylinder 34,35 …… Air supply hole 44 …… Wick core lifting mechanism 45 …… Air adjustment cylinder expansion and contraction mechanism 52 …… Operation knob (operation body)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-62-108909 (JP, A) Actually open 63-76676 (JP, U) Actually open 58-181145 (JP, U) Actually open 58- 142513 (JP, U) Actually opened Sho 57-178911 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A wick which is soaked in a lower portion in a liquid fuel so that the wick can be moved up and down, a wick moving up and down mechanism which moves the wick up and down by interlocking with movement of an operating body, an outer cylinder and a large number of air holes. A combustion cylinder having an outer flame cylinder and an inner flame cylinder and covering the wick, an air restricting portion provided between the outer cylinder and the outer flame cylinder, and lower side surfaces of the inner flame cylinder provided inside the inner flame cylinder. The adjustment outer cylinder and the adjustment inner cylinder having air supply holes at positions corresponding to each other are provided, and the air adjustment cylinder that is made expandable and contractible by moving the adjustment outer cylinder or the adjustment inner cylinder up and down and the operation body are moved. An air-conditioning-tube expanding / contracting mechanism that expands and contracts the air-conditioning tube in conjunction with each other, and the air-conditioning tube expands as the wick is lowered by the operation of the operating body, and the air-supply hole gradually becomes incompatible. It became blocked and the wick was raised. The air adjusting cylinder is reduced so that the air supply hole gradually opens in a corresponding state, and the air supply hole is provided substantially corresponding to the air restricting portion, and the external flame cylinder is provided. The liquid fuel combustion apparatus, wherein the air holes formed in the outer flame cylinder have an opening ratio greater than that of the lower part of the outer flame cylinder with the air restriction portion as a boundary.