JPS61289212A - Combustion device - Google Patents

Abstract

PURPOSE:To provide a combustion device with the wide control range of combustion rate by a structure wherein an air regulator, which changes the opening area of an air passage formed within a wick inner tube by interlinking with the lifting device of a wick, is provided. CONSTITUTION:The titled combustion device is equipped with a wick lifter 22 to lift and lower a wick 3, the lifting device 23 of the wick 3 and an air regulator 24, which interlinks with the wick lifting device 23 by transmitting the regulating action of the air with an actuating shaft 25. The air regulator 24 locates at the bottom of a wick inner tube 1 so as to change the opening area of an air passage 26 within the wick inner tube 1. When high combustion intensity is intended, the air regulator 24 is in open state (as indicated with the solid line) or the air passage 26 is widely open and accordingly enough air is supplied through an air lead-in port 27 in the inner flame tube 6. On the other hand, when low combustion intensity is intended, the flame which fills a primary combustion chamber 8 at high combustion intensity falls down in the primary combustion chamber 8, and accordingly the upper portion of a red heat part is cooled down, and consequently the phenomenon to generate a large amount of CO can be suppressed, and the control range of combustion range can be widened.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a combustion device used for home heating and the like.

Conventional Technology Conventionally, in this type of combustion device, the amount of combustion can be adjusted by changing the height of the wick to change the fuel evaporation area, or by adjusting the amount of air to change the fuel evaporation conditions. be. As the latter, as shown in FIG. 2, a main combustion gas passage 27 and an auxiliary combustion gas passage 28 are provided in the upper part of the combustion chamber 18, and the main combustion gas passage 27 is opened and closed by a passage opening/closing plate 24. In other words, during strong twist firing, the passage opening/closing plate 24 is raised to open the main combustion gas passage 27, thereby reducing the flow resistance and introducing a large amount of air into the vicinity of the tip of the wick 3 and into the primary combustion chamber 8, resulting in large combustion. Get quantity. During weak combustion, the passage opening/closing plate 24 is lowered to close the main combustion gas passage 27, increasing the flow resistance and suppressing the amount of air introduced into the vicinity of the tip of the lamp wick 3 and into the primary combustion chamber 8. In this case, in addition to suppressing the amount of fuel vaporized from the tip of the wick 3,
Since the amount of air flowing into the combustion chamber is also suppressed, strong-weak combustion can be performed twice without causing a large change in the air-fuel ratio, maintaining the flame within the flammable range, preventing flame lift and furano seaback from occurring. It has become possible to have a wide combustion adjustment range. (For example, Japanese Utility Model Application No. 58-165409) Problems to be Solved by the Invention However, in the above-mentioned I (# configuration, the passage opening/closing plate 24
Since the combustion chamber 18 is located above the combustion chamber 18, the combustion exhaust gas constantly comes into contact with the combustion chamber 18, resulting in extremely high temperatures, which poses problems in heat resistance and corrosion resistance. In addition, in order to operate the passage opening/closing plate 24, an operating shaft 25 such as a release from an opening/closing device (not shown) is passed through the air passage 26 inside the core inner cylinder 1 and extended to a height near the inner fire pan 4. The movement must be transmitted to the shaft 30, and the transmission path for the opening/closing operation becomes very long, resulting in a complicated mechanism and problems with the accuracy and robustness of the mechanism's operation.

The present invention solves such conventional problems, and has heat resistance,
It is an object of the present invention to provide a combustion device having an air amount control device with excellent corrosion resistance and operability, and with a wide range of combustion amount adjustment.

Means for Solving the Problems In order to solve the above-mentioned problems, the combustion device of the present invention is provided at the bottom of the wick inner cylinder, and the opening area of the air passage formed inside the wick inner cylinder is adjusted to the upper and lower parts of the wick. It is equipped with an air amount control device that changes the amount of air in conjunction with the air flow rate.

Operation The present invention can control the amount of air and the amount of vaporized fuel in a well-balanced manner by the above-described configuration. Furthermore, since the air amount control device is provided at the bottom of the core guide cylinder, it is not exposed to high temperatures and the mechanism is simple.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

1 is a cylindrical core inner cylinder, and 2 is an outer core cylinder. Reference numeral 3 denotes a lamp wick, which is set to be vertically movable between an inner wick tube 1 and an outer wick tube 2. 4
．． 5 is the core inner cylinder 1. They are an inner fire pan and an outer fire pan formed at the upper end of the core outer cylinder 2.

6 is an inner flame cylinder placed on the inner fire pan 4, 7 is an outer fire pan 5J:
This is an outer flame tube placed on the 8 is a primary combustion chamber formed between the inner flame tube 6 and the outer flame tube 7. 9 is an outer cylinder located outside the outer flame cylinder 7, and 10 is a cross bin concentrically integrating the inner flame cylinder 6°, the outer flame cylinder 7, and the outer cylinder 9. Reference numeral 11 indicates a large number of air holes provided in the inner flame tube 6 and the outer flame tube 7. 12 is a secondary flame port provided on the wall of the inner flame cylinder 6 at the upper end of the primary combustion chamber 8.

Reference numeral 13 denotes an inner flame tube top plate that closes the opening of the inner flame tube 6 directly above the secondary flame port 12. Reference numeral 14 denotes a red-hot part provided in the outer flame cylinder 7 above the constricted part 9a of the outer cylinder 9, and has a large ventilation hole 15 therein. 16 is a secondary flame ring provided on the outer flame tube 7 at the upper end of the primary combustion chamber 8. Reference numeral 17 denotes a transmission cylinder made of a transparent material such as glass, which is placed on the outer cylinder 9 and extends above the primary combustion chamber 8. 18 is a secondary combustion chamber formed above the primary combustion chamber 8. 19 is secondary combustion chamber 1
It is a red-hot body provided in the inner flame tube 6 and is integrated with the inner flame cylinder 6. Reference numeral 20 fixes the upper ends of the transmitting tube 17 and the incandescent body 19 with a thumping ring. 21 is a combustion gas passage provided in the door pull ring.

22 is a wick up/down fitting for raising and lowering the lamp wick 3; 23 is a device for raising and lowering the lamp wick 3; and 24 is an air amount control device interlocked with the wick raising and lowering device 23, the operation of which is transmitted by an operating shaft 25.

This air amount control device 24 is located at the lower part of the core inner cylinder 1 and changes the opening area of the air passage 26 inside the core inner cylinder 1. 2
Reference numeral 7 denotes an air introduction port opened in the inner fire pan 4.

In the above @, when the lamp wick 3 with its tip facing the combustion chamber 8 is ignited, combustion starts, and the high temperature combustion gas from the combustion flows into the primary combustion chamber 8 and the combustion gas passage 21 of the top ring 2°.
A thermal draft is generated by passing through the air, and the air necessary for combustion flows through the inner flame tube 6, the air hole 11 of the outer flame tube 7, and the red-hot part 1.
40 is supplied from the vent hole 14. Each wick has 1 air hole
1 is supplied with heat from a flame that is stabilized, evaporating the fuel and sustaining combustion. During strong combustion, the air amount control device 24 is in an open state (solid line) and the air passage 26 is wide open, so that sufficient air is supplied to the inner flame cylinder 6 from the air inlet 27. Therefore, the fuel from the lamp wick 3 is sufficiently vaporized, and sufficient air is also supplied into the combustion chamber 8. ``Also, a large amount of air is sent from the secondary flame port 12 to the secondary combustion chamber 1B.
A uniform flame Fr is formed because the flame is supplied toward the direction of the flame Fr. Next, when the lamp wick 1 up/down device 23 is moved to lower the exposed height of the lamp wick 3, the air amount control device 24 gradually closes the opening of the air passage 26, and the lamp wick 3 is brought to the lowest position. When set, the air passage 26 is closed to a dimension A open. In this state, the amount of air flowing from the air passage 26 into the primary combustion chamber 8 through the air hole 11 of the inner flame tube 6 is considerably suppressed, but at the same time, the exposed height of the lamp wick 3 is also lowered, and the lower part of the inner flame tube 6 is Since the amount of air supplied from the air hole 11 to the vicinity of the lamp wick 3 is also suppressed, the vaporization of the fuel is also controlled at the same time, and the combustion amount can be changed without significantly affecting the air-fuel ratio.

Therefore, the air-fuel ratio will be distorted and the combustion state will deteriorate, and a large amount of co2 will not be generated due to lifts, packs, etc.

In weak combustion, the combustion load in the primary combustion chamber 8 is smaller than in strong combustion, so even in weak combustion, combustion can be carried out in the entire primary combustion chamber 8, so that the flame is in the primary combustion chamber 8. The upper part of red-hot part 14 is cooled and CO
It is possible to suppress the phenomenon in which a large amount of Therefore, the combustion amount can be adjusted over a wide range. Also 2
Since the air amount control device 24 is located at the bottom of the core inner cylinder 1, it is not exposed to high temperatures at all, and there are no problems with heat resistance or corrosion resistance. Furthermore, since the lamp wick up/down device 23 is also located relatively close to each other, the transmission path for the opening/closing operation of the air amount control device 24 is also shortened, so that its operating mechanism can be made simple, accurate, and robust.

In addition, even if the air amount control device 24 is plate-shaped and opens by one dimension A at the minimum center height, as shown in Figure 1,
For example, it may be a plate-shaped member with a certain opening that opens and closes the entire opening area of the air passage.

Effects of the Invention As described above, the combustion apparatus of the present invention provides the following effects.

(1) An air volume control device is installed at the bottom of the wick inner cylinder that works in conjunction with the wick up/down device to change the opening area of the air passage, so during weak combustion, air is introduced from the inner flame cylinder air hole into the primary combustion chamber. At the same time, the exposed height of the wick is also reduced, and the air introduced near the wick is also suppressed, which controls fuel vaporization and maintains combustion without significantly affecting the air-fuel ratio. Can be done. Therefore, the air-fuel ratio will not be distorted, the combustion state will not deteriorate, lift or back-up will not occur, and a large amount of CO will not be generated.

(2) Since the amount of air and the amount of vaporized fuel are controlled simultaneously, the combustion load is reduced during weak combustion, and combustion can be maintained throughout the entire combustion chamber, allowing the flame to fall into the primary combustion chamber and reduce the red-hot part. Since the upper part is cooled and a large amount of C0 is not generated, the combustion amount can be adjusted over a wide range.

(j Since the air flow control device is located at the bottom of the wick inner cylinder, it is not exposed to high temperatures and is advantageous in heat resistance and corrosion resistance. Also, since it can be installed near the wick up/down device, the operating mechanism is simple. , can be accurate and robust.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of a combustion device according to an embodiment of the present invention, and FIG. 2 is a sectional view of a main part of a conventional combustion device. 1... core inner cylinder, 2... core outer cylinder, 3...
...-Light wick, 6,..., 1. Inner flame tube, 7...
Outer flame tube, 8.old...-flame combustion chamber, 9....outer tube,
11...Air hole, 17...Transmission tube. 23...Light wick up/down device, 24...Air amount control device. 26...Air passage.

Claims (1)

[Claims] A cylindrical core inner tube and an outer core tube, a lamp wick mounted between the core inner tube and the core outer tube so as to be vertically movable, and a large number of lamp wicks placed on the upper ends of the core inner tube and the core outer tube, respectively. an inner flame tube and an outer flame tube having air holes, an outer tube provided outside the outer flame tube, a transmission tube placed above the outer tube, and a bottom part of the core inner tube. A combustion device comprising an air amount control device that works in conjunction with the wick up-and-down device to change the opening area of an air passage formed inside the wick inner cylinder.