JPH04340004A - Burner - Google Patents

Abstract

PURPOSE:To reduce efficiently the odor at the time of ignition for a burner such as a kerosene stove, etc. CONSTITUTION:This burner is constituted of a fuel tank 1 that has a wick gap 4 formed by a wick guiding cylinder 2 and a cylinder 3 outside the wick, wick 5 that is provided in the wick gap of said fuel tank 1 and moves freely up and down in it, combustion cylinder 9 installed above said wick guiding inner cylinder 2 and wick 3 outside the wick, wick lifting mechanism 8 that moves said wick 5 up and down, suction means 10 that is installed at a section of said fuel tank 1 and sucks and exhausts the fuel gas from the upper section of the wick 5 through the inside of said fuel tank 1, and controller that operates said suction means 10 before said wick 5 is ignited. Accordingly since this burner is ignited when the suction force of the suction device 10 is stabilized, it is possible to reduce the odor at the time of ignition efficiently.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an up-and-down wick type combustion device used for home heating and the like.

0002

BACKGROUND OF THE INVENTION In general, upper-and-lower wick type combustion devices have a problem in that surplus fuel that vaporizes from the tip of the wick during extinguishing is thermally decomposed in the high-temperature combustion tube, producing an odor.

Recently, in order to reduce this odor, a system has been proposed in which a suction means such as a fan is operated to suck excess fuel into the tank and then release it to the outside.

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

FIG. 5 shows a combustion apparatus having such a suction means, in which 30 is an oil tank, 31 is a core guide tube installed upright on the oil tank 30, 32 is a core outer tube fixed on the oil tank 30, and 3
3 is a core gap formed by the core guide tube 31 and the core outer tube 32, and 34 is a core that moves up and down within this core gap 33. 3
Reference numeral 5 denotes a wick up-and-down mechanism that moves the wick 34 up and down to expose the tip of the wick 34 to the lower end of the combustion tube 36 placed on the core guide tube 31 and the core outer tube 32, thereby causing combustion. Reference numeral 37 denotes a suction means that operates when igniting and extinguishing a fire, and a motor 38 rotates a fan 39 to open the suction port 4 of the oil tank 30.
0 to suck and exhaust the inside of the oil tank 30. 41
is a cartridge tank.

[0006] In the above configuration, when the wick up-and-down mechanism 35 is operated to expose the wick 34 to an appropriate amount within the combustion tube 36 and ignite it, combustion occurs within the combustion tube 36 and heating becomes possible. and,
If the lead up and down mechanism 35 is operated in the opposite direction, the lead 34 will be adjusted to the center gap 3.
3. Immerse yourself in the designated position and extinguish the fire. When igniting or extinguishing the ignition, a switch (not shown) that is turned on and off by the wick up/down mechanism 35 is turned on, and the suction means 35 is operated for a certain period of time, causing unburned fuel to flow out through the combustion tube 34 due to the draft. Odor is reduced by sucking the components into an oil tank 28 and releasing them to the outside from an exhaust port 42 without thermally decomposing them.

A control device for such a suction means was constructed as shown in FIG. That is, when the wick up/down mechanism 35 is operated to raise the wick 34, a switch 43 interlocked with the wick up/down mechanism 35 is turned on, the ignition heater 44 generates heat, ignites the wick 34, and starts combustion. At this time, the other interlocking switch 45 is simultaneously switched to the normally open contact side, the ignition timer 46 is activated, a drive permission signal is output to the motor drive circuit 47, and the motor 38 rotates to perform the odor absorption operation. After a certain period of time has elapsed, the ignition timer 46 is turned off and the motor 38 is stopped.

Next, when the wick up/down mechanism 35 is operated to lower the wick 34 to extinguish the fire, the switch 45 is switched to the normally closed contact side, the extinguishing timer 48 is activated, and a drive permission signal is sent to the motor drive circuit 47. is output, and the motor 38 rotates to perform the odor absorption operation. When a certain period of time has elapsed, the extinguishing timer 48 is turned off and the motor 38 is stopped.

[0009]

[Problems to be Solved by the Invention] However, in such a configuration, since suction starts at the same time as ignition, it is necessary for the suction means to absorb the odor immediately after ignition until its suction ability stabilizes, as shown by the dotted line in FIG. There was a problem in that it was not possible to sufficiently suck in the carbonaceous and hydrogen gases that would become the gas, and the odor reduction effect was low.

The present invention has been made in view of the above-mentioned problems in the prior art, and an object of the present invention is to provide a combustion device that can significantly reduce odor during ignition.

[0011]

[Means for Solving the Problems] In order to solve the above problems, the present invention has a structure in which a suction means for sucking and exhausting combustion gas from the upper part of the wick through an oil tank during ignition is activated before igniting the wick. It is as follows.

0012

[Function] With the above structure, the present invention can efficiently suck and exhaust most of the hydrocarbons produced during ignition, and can significantly reduce the odor immediately after ignition.

[0013]

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

1 is an oil tank, 2 is a core guide tube installed upright in the oil tank 1, 3 is a core outer tube fixed on the oil tank 1, and 4 is a core formed by the core guide tube 2 and the core outer tube 3. The gap 5 is a core that moves up and down within this core gap 4. An inner fire pan 6 is disposed above the core guide cylinder 2, 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, and is configured so that the upper end of the wick 5 is exposed to an appropriate extent above the inner fire pan 6 and the outer fire pan 7. Reference numeral 9 denotes a combustion cylinder, which is placed on the inner fire pan 6 and the outer fire pan 7, and is configured to carry out combustion inside thereof. Reference numeral 10 denotes a suction means for sucking and exhausting the inside of the oil tank 1 through the suction port 11 of the oil tank 1. This suction means 10 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 generated 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 amount on the inner fire pan 6 and the outer fire pan 7 and ignite it,
It burns in the combustion tube 9, making it possible to take heat. At this time of ignition, the suction means 10 is activated, and its operation and control device will be explained. In FIG. 2, when the wick 5 is raised by operating the wick up/down mechanism 8, the switch 17 interlocked with the wick up/down mechanism 8 is switched to the normally open contact side, the ignition timer 18 is started, and the motor drive circuit 19 is activated. A drive permission signal is output,
The motor 13 rotates and performs the odor absorption operation. At this time, the switch 21 is also turned on at the same time, the timer 22 is activated, and after a certain period of time has elapsed, that is, when the odor absorption operation has started and stabilized, the switch 23 is turned on, the ignition heater 24 is energized, and the wick 5 is turned on. is ignited and starts burning. After a certain period of time has elapsed, the drive permission signals from the ignition timer 18 and the timer 22 are turned off, and the energization to the motor 13 and the ignition heater 24 is stopped, respectively.

This embodiment shows a case in which the suction operation is performed even when extinguishing a fire, so this will be explained below. First, the wick up/down mechanism 8 is operated to lower the wick 5 and when the fire is extinguished, the switch 17 is switched to the normally closed contact side. As a result, the extinguishing timer 25 is started, and a drive permission signal is output from the extinguishing timer 25 to the motor drive circuit 19, and the motor 1
3 rotates to perform odor absorption operation. After a certain period of time has elapsed, the drive permission signal from the extinguishing timer 25 is turned off and the motor 13 is stopped.

Next, the effect of the suction means 10 at the time of ignition will be explained. FIG. 4 shows the odor state at the time of ignition and the suction force of the odor reduction means. The vertical axis shows the concentration of hydrocarbons (HC) and the suction force of the suction means as odor indicators, and the horizontal axis shows the elapsed time after ignition. When the suction means 10 is not operated at the time of ignition, the HC generation state is as shown by the solid line curve X shown in the figure. The odor at the time of ignition can be roughly divided into two peaks. One is the sharp peak (■) that occurs during the flame rotation immediately after ignition, and the other is the relatively gentle shoulder-shaped peak (■) that occurs afterwards. Peak ■ is a strong irritating odor, but it decays in a short time, whereas peak ■ has a lower HC level than peak ■, but it lasts for a longer time, so the odor is felt to be stronger.

This situation will be explained in more detail. Figure 3
Reference numerals 26 and 27 denote inner and outer flame tubes constituting the combustion tube 9, which are placed on the inner and outer flame pans 6 and 7, respectively. Reference numeral 28 denotes a combustion chamber formed between the inner flame tube 26 and the outer flame tube 27, and the tip of the wick 5 is exposed to the combustion chamber 28 to an appropriate extent to continue combustion. Reference numeral 29 denotes a large number of air holes provided in the inner and outer flame tubes 26 and 27, through which air for combustion is supplied into the combustion chamber 28. When the wick 5 is raised by the wick up/down mechanism 8 and the ignition heater 24 is energized to ignite the wick 5, combustion begins.

Normally, in a wick type combustion device, the wick 5 has an inner cylindrical shape, and after ignition, the flame circulates in a circumferential manner, completing the flame rotation. In the middle stage of this flame rotation, fuel is constantly vaporized from the tip of the flame, and the vaporized gas from the tip of the flame passes through the combustion chamber 28 without being combusted and is released into the atmosphere.
This results in the strong pungent odor of peak ■. After the combustion is completed, the amount of fuel vaporization increases and the flame rises, gradually leading to stable combustion. However, in the middle of this process, the fuel gas increases rapidly in the combustion chamber 28, while the draft force starts to rise. As a result, the supply of air from the inner and outer flame tubes 26 and 27 is insufficient, resulting in insufficient mixing, and the flame comes into contact with the walls of the inner and outer flame tubes 26 and 27 and is cooled, resulting in combustion. Odors occur because the process does not proceed efficiently. This odor continues until the flame starts and the combustion tube reaches a high temperature. This appears as the odor at peak ■.

[0020] Therefore, in order to suppress the odor at the time of ignition, it is necessary to effectively reduce both the above-mentioned peaks (1) and (2).

[0021] In the previously considered method of suctioning at the same time as ignition operation, as shown in Fig. 4, it takes some time from the start of suction to the stabilization of suction capacity, so it is necessary to sufficiently suction the combustion gas at peak ■ immediately after ignition. unable to do anything

[0022]

[Outside 1]

[0023]+

[0024]

[Outside 2]

[0025] Although some parts come out as odor, by activating the suction means and suctioning before the ignition operation as in the present invention, the peak (①) can be reduced slightly.

[0026]

[Outer 3]

Although some parts remain, the odor at the time of ignition can be significantly reduced.

[0028]

As described above, according to the combustion device of the present invention, since suction is started before ignition, most of the hydrocarbons immediately after ignition can be efficiently suctioned and exhausted. Odor can be significantly reduced.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a combustion device in an embodiment of the present invention.

[
Figure 2: Circuit diagram of the suction means of the combustion device

[Figure 3] Enlarged sectional view of main parts of the combustion device

[Figure 4] Characteristic diagram showing odor generation status and suction power

[Figure 5]
Cross-sectional view of a conventional combustion device

[Fig. 6] Circuit diagram of suction means of a conventional combustion device

[Explanation of symbols]

1 Oil tank 2 Core guide tube 3 Core outer cylinder 4 Core gap 5 Core 8 Core up and down mechanism 9 Combustion cylinder 10 Suction means

Claims (1)

[Claims] 1. An oil tank having a core gap formed by a core guide tube and a core outer tube, a core disposed vertically movably within the core gap of the oil tank, and the core guide tube and the core outer tube. a combustion cylinder placed above the cylinder; a wick up-and-down mechanism that moves the wick up and down;
A combustion device that is installed in a part of the oil tank and includes a suction means that sucks and exhausts fuel gas from above the wick through the inside of the oil tank during ignition, and a control device that operates the suction means before igniting the wick. Device.