JPH03291408A - Burner - Google Patents

Abstract

PURPOSE:To reduce the odor that is generated at the time of ignition, etc. in a wick lifting and lowering type burner for room heating in a household by forming a suction channel in the gap of a wick receiving section and sucking the fuel gas in the gap into an oil tank and exhausting the tank. CONSTITUTION:In the gap of a wick receiving section 4 which is formed of a wick guiding cylinder 2 and a wick outer cylinder 3, at least one suction device 4a is provided which has a suction rate larger than other places. The fuel gas in the gap of the wick receiving section 4 is sucked into an oil tank 1 through a suction channel 4a and a suction port 11 of the oil tank 1 by means of a suction means 10 and the tank is exhausted. With this constitution it is possible to reduce the odor at the time of ignition and fire extinguishing.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a wick type combustion device used for home heating and the like.

Conventional technology In general, wick type combustion devices have a problem in that when extinguishing a fire, surplus fuel that vaporizes from the tip of the wick is thermally decomposed in the high-temperature combustion tube, producing an odor.

Recently, in order to reduce this odor, after activating a suction means such as a fan to suck the excess fuel into the tank,
A method that releases it to the outside has been proposed.

However, this type of combustion device has the problem of generating odor even during ignition, and since the above-mentioned suction means has reduced the odor during extinguishing, dissatisfaction with the odor during ignition has increased, and a solution to this problem is desired. As a means to solve this problem, a method has been proposed in which the suction means is activated even when igniting, thereby reducing odor.

Figure 5 shows a combustion device having such a suction means, with a 17
is an oil tank, 18 is a core guide tube installed in the oil tank 17,
19 is a core outer cylinder fixed on the oil tank 17; a core accommodating part formed by the core guide cylinder 18 and the core outer cylinder 19;
1 is a core that moves up and down in this core accommodating portion 20.

Reference numeral 22 denotes a wick up and down mechanism that moves the wick 21 up and down to expose the tip of the wick 21 to the lower end of the combustion tube 23 placed on the core guide tube 18 and core outer tube 19 for combustion.

Reference numeral 24 denotes a suction means that operates when igniting and extinguishing a fire, and is configured to rotate a fan 26 by a motor 25 to suck and exhaust the inside of the oil tank 17 through a suction port 27 of the oil tank 17. 28 is a cartridge tank.

In the above configuration, when the wick up-and-down mechanism 22 is operated to expose the wick 21 to an appropriate extent inside the combustion tube 23 and ignite it, the wick 21 burns in the combustion tube 23 and it becomes possible to collect heat. And the core up and down mechanism 22
If the wick 21 is operated in the opposite direction, the wick 21 will be inserted into the wick accommodating portion 20 to a predetermined position and the fire will be extinguished. A switch (not shown) that is turned ON and OFF by the wick up and down mechanism 22 when igniting and extinguishing the ignition is turned OFF.
NL, the suction means 24 operates for a certain period of time, and the unburned components of the fuel that are about to flow out through the combustion tube 23 to the outside by draft are sucked into the oil tank 17, and are released from the exhaust port 29 to the outside without being thermally decomposed. Reduces odors by emitting

Problems to be Solved by the Invention However, in the above-mentioned conventional device, the core 21 and the core guide tube 18 of the core accommodating portion 20, which serve as the suction path during suction, and the core 21 and the core outer tube 1
Since the gap formed between the cores 21 varies depending on the thickness and diameter of the core 21, the flow resistance of the suction path changes, causing a difference in the suction amount, making it difficult to obtain an appropriate suction amount. The following challenges were encountered: In other words, at the time of ignition, suction is performed during ignition and combustion, and the effect is not obtained by suctioning a unit as in the case of extinguishing, but compared to extinguishing, the wick 2
Since the amount of fuel vaporized from the oil tank 17 is large, if the amount of suction becomes excessive, the vaporized gas sucked into the oil tank 17 may be discharged from the exhaust port 29, producing white smoke. In addition, excessive suction suppresses the amount of vaporized combustion, which slows down the rise of combustion, resulting in poor combustion due to flame cooling, etc., and may even generate odor.

On the other hand, if the amount of suction is too small, there is a problem in that odor is not sufficiently reduced.

The present invention was made in view of such conventional problems, and an object of the present invention is to provide a combustion device that can significantly reduce odor at least when igniting or extinguishing.

Means for Solving the Problems In order to solve the above problems, the combustion apparatus of the present invention includes a means for sucking and exhausting fuel gas from the gap in the wick accommodating part through the inside of the oil tank, and a means for sucking and exhausting fuel gas from the gap in the wick accommodating part. A suction path is provided at one location where the amount of suction is larger than at other locations, and the suction means is set to operate at least when igniting or extinguishing the fire.

Operation The combustion device of the present invention has the above-mentioned configuration, and by providing a suction path in the gap between the wick housing parts, it is possible to prevent the generation of white smoke due to an excessive amount of suction at the time of ignition caused by a change in the flow path resistance in the gap of the wick housing parts. It is possible to prevent odor generation due to poor combustion or deterioration of odor reduction effect due to too small suction amount, and to stably secure an optimum suction amount, thereby significantly reducing odor during ignition. Further, even when the fire is extinguished, the odor at the time of fire extinguishing can be effectively reduced as well.

Example An example of this will be described below with reference to FIGS. 1 to 4.

1 is an oil tank, 2 is a core guide tube installed in the oil tank l, 3
Reference numeral 4 designates a core outer cylinder fixed on the oil tank l, 4 a core accommodating portion formed by the core guide cylinder 2 and the core outer cylinder 3, and 5 a core that moves up and down within this 8 accommodating portion 4. Reference numeral 4a denotes a suction path provided in at least one part of the gap between the core outer cylinder 3 and the core 5 of the lead accommodating part 4 so that the amount of suction is larger than in other parts. Core guide tube 2
An inner fire pan 6 is disposed above the core outer cylinder 3, and an outer fire pan 7 is disposed above the core outer cylinder 3. Reference numeral 8 denotes a wick up-and-down mechanism, which moves the wick 5 up and down so that the upper end of the wick 5 is exposed to an appropriate amount above the inner fire pan 6 and the outer fire pan 7. 9 is a combustion cylinder, an inner fire plate 6,
It is placed on the outer fire pan 7 and is configured to cause combustion therein. 1O is a suction means that sucks and exhausts the inside of the oil tank 1 from the suction port 11 of the oil tank 1.

This suction means lO includes a turbo fan 12 for suctioning the inside of the oil tank 1, a motor 13 for rotating the turbo fan 12, and a wind force when the turbo fan 12 rotates to suck and exhaust the inside of the oil tank 1. It consists of a valve 14 that opens. 15 is an exhaust port, and 16 is a cartridge tank.

In the above configuration, when the wick up and down mechanism 8 is operated to expose the wick 5 to an appropriate length on the inner fire pan 6 and the outer fire pan 7 and ignite it, it burns in the combustion tube 9 and heat can be collected.

At this time of ignition, the suction means 10 operates for a certain period of time, and its effect will be explained.

The time of ignition is completely different from the time of extinguishing; suction occurs during the process of ignition and combustion, the amount of vaporized fuel increases rapidly, the flame rises, and gradually progresses to stable combustion. However, it is extremely important to set a suction amount that can obtain a sufficient effect without adversely affecting combustion. The amount of suction is determined by suction means I.
This is determined by the capacity setting of O and the flow path resistance of the suction path. Here, the flow path resistance is dominated by the gap formed between the core 5 and the core guide tube 2 or between the core 5 and the core outer tube 3 in the core housing section 4, which is the narrowest part in the suction path. This gap varies depending on the thickness and diameter of the core 5, and the resistance of the flow path changes, causing a difference in the amount of suction, resulting in the same problems as in the conventional example. However, as a result of considering this point, as shown in Figure 2 (a is an enlarged view of the main part of Figure 1, b is a sectional view taken along the line A-A), we found that at least one part of the gap in the lead accommodating part 4 has more suction than other parts. It has become clear that providing the suction path 4a with a wide gap so as to increase the amount of water does not cause the above-mentioned problems and has a large odor reduction effect. In other words, the suction path 4a has a smaller flow path resistance than other parts of the gap in the lead accommodating part 4, and the suction amount is relatively larger than that in other parts. Even if the gap between the wicks 4 and 4 fluctuates, a nearly constant amount of suction can always be obtained from the suction path 4a, which eliminates the generation of white smoke due to excessive suction volume caused by fluctuations in the gap between the wick storage parts and the odor caused by poor combustion. This prevents deterioration in the odor reduction effect due to generation and insufficient suction amount, and stably secures the optimum suction amount, making it possible to significantly reduce the odor at the time of ignition. Further, by operating the suction means 10 when extinguishing a fire, it is possible to effectively reduce the odor at the time of extinguishing the fire.

FIG. 3 shows the results of measuring the state of odor generation during ignition. The vertical axis shows hydrocarbon (HC) fA degrees as an odor index, and the horizontal axis shows the elapsed time after ignition.

When the suction means 1O is not operated at the time of ignition, the HC generation state is as shown by curve A. In curve A, the odor at the time of ignition is roughly divided into two peaks.

Peak ■ is a sharp peak and a strong pungent odor that occurs when the flame circulates immediately after ignition. Peak ■ is a relatively gentle peak in the process of the flame rising and gradually moving toward stable combustion, and although it is not an irritating odor, it lasts for a long time, so you will notice a lot of odor. Curve B is the HC generation curve when the suction means 10 is operated at the time of ignition in this embodiment. Peak of curve A ■
, peak (2), HC was significantly reduced, and the effect of reducing odor upon ignition is obvious. Figures 4a, b, and c show other embodiments of the present invention, in which the thickness of the wick 5 is made smaller so that the amount of suction is larger than that of other parts. Of course, the configuration is not limited to this as long as it achieves the purpose and effect.

Effects of the Invention As described above, the combustion apparatus of the present invention has a means for suctioning and exhausting fuel gas from the gap in the wick accommodating part through the inside of the oil tank, and a small gap in the wick accommodating part. Since the suction means is set to operate at least at the time of ignition or extinguishing, the suction at the time of ignition caused by a change in the flow path resistance in the gap of the wick housing part is provided. This prevents the generation of white smoke due to excessive volume, the generation of odor due to poor combustion, and the deterioration of odor reduction effect due to insufficient suction volume, and it is possible to stably maintain the optimal suction volume, reducing odors during ignition. Furthermore, the odor at the time of extinguishing a fire can also be effectively reduced.

Due to the above effects, the comfort of the wick type combustion apparatus can be significantly improved.

[Brief explanation of the drawing]

Figure 2 is a sectional view taken along the line A-A in Figure 2a, Figure 3 is a characteristic diagram showing the odor generation situation, and Figures 4a, b, and c are respectively diagrams of combustion equipment in other embodiments of the present invention. FIG. 5 is a sectional view of a conventional combustion device. 1... Oil tank, 2... Core guide tube, 3
... Core outer cylinder, 4 ... 8 housing section, 4a.
... Suction path, 5 ... Core, 9 ...
Combustion cylinder, 10...Suction means.

Claims (1)

[Claims] an oil tank having a core accommodating portion formed by a core guide tube and a core outer tube; a core disposed in the core accommodating portion so as to be movable up and down; and an oil tank provided above the core guide tube and the core outer tube. with a combustion tube
a suction means that is installed in a part of the oil tank and sucks and exhausts fuel gas from a gap in the wick accommodating part through the inside of the oil tank; A combustion device comprising a suction passage in which the amount of suction increases, and the suction means is set to operate at least when igniting or extinguishing a fire.