JPS6199020A - Method and device for preventing malodor generated at the time of fire extinguishment in evaporation type burner - Google Patents

Abstract

PURPOSE:To prevent malodor of an unburnt gas from being dispersed from around the periphery by instantaneously burning the fuel gas with a very minute air feed quantity to such a degree as being generated by a back fire combustion at the time of extinguishing fire, and immediately thereafter controlling the air feed quantity so that it increases in a quantity greater than the predetermined quantity at the time of evaporation combustion. CONSTITUTION:At the time of extinguishing evaporating combustion, simultaneously with the stoppage of fuel oil, the air feed quantity of combustion air to a gas chamber 8 is made very instantaneously minute from a predetermined quantity at the time of the evaporating combustion to such a degree as back fire combustion being generated within a gas chamber 8, and an unburnt gas remaining within the gas chamber 8 is burnt in the gas chamber 8 and a flame ejection chamber 7. Immediately thereafter, the air feed quantity at the time of the evaporating combustion is controlled to increase to a quantity greater than the predetermined quantity at the time of the evaporating combustion, and the combustion gas is extinguished while rapidly discharging the combustion gas to the outside from the gas chamber 8 and the flame ejection chamber 7. As a result, dissipation of malodor of an unburnt raw gas generated at the time of fire extinguishment of the evaporating burner is positively removed and clean evaporating combustion is constantly accomplished.

Description

[Detailed Description of the Invention] Industrial Field of Application This invention aims to continue vaporization and combustion by mixing evaporated gas of fuel with combustion air and pressurizing it into a gas chamber, and then blowing it into a flame chamber. Even if the vaporization burner is busy, it can reliably prevent the odor of the unburned gas generated during the extinguishing of the vaporization combustion from dispersing into the surrounding area for a long time, and ensure clean combustion from start to finish. This invention relates to a method and device for preventing bad odors.

Conventional technology Conventionally, fuel, such as petroleum fuel, is fed into a rotating vaporizing cylinder in a combustion cylinder, and the fuel is mainly combusted in the combustion cylinder, and then the vaporizing cylinder is heated by ecological combustion. ,
After that, the fed fuel is evaporated in the vaporization cylinder,
A vaporizing burner that attempts to continue vaporizing combustion by mixing the generated vaporized gas with combustion air and blowing it into a flame chamber from a gas chamber disposed on the inner periphery of the combustion cylinder was developed before this application, for example, in Japanese Patent Publication Publication No. 52-3 (1983).
It is known as described in No. 2094 No. 181IC.

Problems to be Solved by the Invention By the way, in the above-mentioned known vaporizing burner, when the supply of fuel is cut off in order to extinguish the continued vaporizing combustion, diffusion and migration occurs in the vaporizing cylinder before the oil supply is stopped. After that, the fuel will be vaporized and burned as the fuel supply is stopped.
Perhaps because the required concentration of vaporized gas cannot be obtained, this vaporized gas becomes diluted by the combustion air and remains in the gas chamber as unburned gas without being able to burn. Since the gas is gradually ejected from the gas chamber over a long period of time, the bad smell of unburned gas is dissipated into the surrounding area after the vaporizing burner is extinguished.Nothing has been done to solve this problem.

Therefore, when extinguishing vaporization combustion, the amount of combustion air blown to the gas chamber is determined at the same time as the supply of fuel is stopped. After reducing the amount to a very small amount that causes backfire combustion, the system automatically controls the amount to be increased from the amount during vaporization combustion, thereby quickly expelling the molten gas from the gas chamber and flame chamber to the outside. The above problem has been solved by providing a method and device for preventing bad odors when extinguishing a vaporizing burner, which can prevent the bad smell of unburned gas from being emitted into the surrounding area. It is something.

Means for Solving the Problems Therefore, the technical problem of the present invention is to quickly backfire the unburned gas generated when extinguishing vaporization combustion, and at the same time reliably and quickly transfer the combustion gas to the gas chamber and the jet. It is possible to fundamentally eliminate the odors caused by unburned gases from dispersing into the surrounding area by discharging them from the flame chamber to the outside.

In order to solve this technical problem, we have developed a method in which the evaporated gas of fuel is mixed with combustion air and made to flow into and out of a gas chamber, and then the vaporized gas is blown into a flame chamber to perform vaporization combustion. When extinguishing vaporization combustion, - At the same time as the supply of fuel is stopped, the amount of combustion air blown into the gas chamber is instantly reduced from the amount during vaporization to a very small amount to the extent that backfire combustion occurs in the gas chamber. After the residual unburned gas in the gas chamber is combusted in the gas chamber and the eruption chamber, the amount of combustion gas is immediately controlled to be greater than the amount during vaporization combustion, and the combustion gas is discharged from the gas chamber and the eruption chamber. A method for preventing bad odors during extinguishing in a vaporizing burner characterized by extinguishing the fire, and a structure for carrying out the method is provided in a combustion cylinder provided with a gas chamber on the inner periphery and communicating with the gas chamber. A vaporizer cylinder is arranged to rotate freely, and one side of the combustion cylinder is equipped with a blowing chamber that can blow combustion air into the gas chamber through the vaporizer cylinder, and an oil feed pipe inserted into the vaporizer cylinder and opened. and a wind scattering control device which is disposed at the intake port of the air supply and air chambers and has an intake window whose opening can be adjusted, respectively, are connected to a control device, and the control device stops the fuel supply to the oil pipe. At the same time, in a vaporizing burner characterized in that the intake window is sequentially adjusted in opening so that it becomes a quantitative intake window during vaporization combustion, a trace intake window during backfire combustion, and a enrichment intake window during combustion gas discharge. This is a device to prevent bad odors when extinguishing fires.

Made for The above technical method and its device work as follows.

That is, in FIGS. 1 to 6, if the burner is started now, the carburetor 9 will be rotated at high speed and air will be blown from the main and sub-intake windows 21 and 22 of the air volume adjustment device 20 operated by the control device 29. A fixed amount of combustion air suitable for vaporization combustion taken into the chamber 2 is blown from the blowing chamber 2 through the vaporizing cylinder 9 to the gas chamber 8, and then most of it is sent from the gas chamber 8 to the flame chamber. 1 Vc fume is emitted. Under this condition, if fuel is sent to the inner periphery of the vaporizer tube 9 from the oil feed pipe 15, the fuel will flow with the rotating centrifugal force of the vaporizer tube 9 while being diffused and transferred along the inner circumference of the vaporizer tube 9. The particles are atomized by the injection action of combustion air and K, and are sprayed into the flame chamber T from the proximal open side peripheral end of the vaporization tube 9, where they are ignited and burned live. When live combustion occurs in the injection flame chamber 7 in this way, the vaporization cylinder 9 is intensely heated by the raw combustion flame, so that the fuel pressure-fed into the vaporization fi 9 is kept busy during its diffusion transfer. The generated vaporized gas is stirred and mixed with the combustion air to form a complete mixed gas, which is then pressure-fed into the gas chamber 8, and finally is injected from the busiest gas chamber 8 into the flame chamber 7, where it is blown into the flame chamber 7. It is ignited by the live combustion flame, and the vaporized combustion flame is extinguished.

Therefore, after the supplied fuel is transferred from the raw combustion state to the vaporization combustion state, the vaporization cylinder 9 is heated by the rising vaporization combustion flame, so vaporized gas is continuously generated, and a good condition is achieved. It is possible to continue vaporization combustion.

By the way, if the fuel supply to the oil pipe 15 is stopped in order to extinguish the ongoing vaporization combustion as necessary, a signal is immediately sent to the control device 29, the air volume adjustment device 20 is activated, and the air flow is stopped. The main and sub-intake windows 21 and 22 of the chamber 2 are used as trace intake windows through which a very small amount of combustion air flows instantaneously to the extent that backfire combustion occurs in the gas chamber B from the quantitative intake window 26 during vaporization combustion. The aperture is adjusted so that it becomes 21. If you do,
As described above, by adjusting the main and sub-intake windows 21 and 22 from the quantitative intake window 26 to the minute intake window 27, the amount of combustion air is momentarily reduced.
The fuel fed into the gas chamber is evaporated by adding pp and becomes vaporized gas, and this vaporized gas remains in the gas chamber 8 and vaporization tube 9 as unburned gas without being emitted from the gas chamber 8. However, the pressure in the gas chamber 8 is significantly reduced compared to when vaporization combustion continues, and backfire combustion occurs in which the gas chamber 8 is ignited from the eruption chamber 1, and the gas chamber 8 and vaporization cylinder 9 are ignited. All of the remaining unburned gas is burned in the gas chamber 8 and the flame chamber I by a trace amount of combustion air blown into the gas chamber 8 through the ventilation chamber 2 from the trace intake window 27. As mentioned above, as soon as the unburned gas is completely instantaneously combusted, the control device 29 operates the regulating device 20 to feed the main and sub-intake windows.
1.22 is opened from the small amount intake window 2T to the increased amount intake window 28 which is larger than the fixed amount intake window 26 during vaporization combustion, and the increased amount of combustion wall air is blown into the gas chamber 8 from the busy ventilation chamber 2 all at once. Combustion gas is discharged to the outside faster than the gas chamber 8 and the flame chamber 7, and no foul odor is ever dissipated into the surroundings. Then, the air blowing operation may be stopped after a certain period of time has elapsed.

Embodiment The structure of a vaporizing burner for carrying out the method according to the present invention will be explained based on the embodiment shown in the accompanying drawings.

1 and 6, reference numeral 1 denotes a bottomed knot-shaped combustion tube with an open tip and a closed base end, and a ventilation chamber 2 is provided on the bottomed side of the combustion tube 1. Adjacently, the combustion tube 1 and the ventilation chamber 2 are communicated through a vent hole 3 opened at the center of the bottomed side of the combustion tube 1. The entire inner periphery of the combustion tube 1 is opened on the inside of the central bulging step, and a large number of gas injection holes 6 are bored around the approximately front half of the combustion surface 5 of the tube wall, and the inside is provided with a flame chamber 7. The formed combustion m4 is stretched so that an open gas chamber 8 between the combustion tube 1 and the combustion disk 4 is formed. Reference numeral 9 denotes a vaporizer cylinder whose tip end is closed and whose base end is open.
It is attached to the tip of the rotating shaft 10 inserted into the combustion cylinder 1 from the side so as to be mounted on the rotating shaft 10. Reference numeral 11 denotes a blower tube, and the blower tube 11 is deeply inserted from the vent 3 of the blast furnace tube 1 toward the tip side of the vaporizing tube 9, and there is a space between the vaporizing tube 9 and the blower tube 11. An air mixture passage 12 is formed,
The hot air passage 12 is communicated with the gas chamber 8 through the opening of the combustion disk 4 on the base end side. There is a blower tube 1 at the tip of the vaporizer tube 9.
An inverted conical fuel diffuser 13 is fixed opposite the opening at the tip of the fuel pipe 15, and the outer surface of the fuel diffuser 13 has a tip opening of an oil feed pipe 15 connected to a fuel pump 14 at one end. Note that the periphery of the proximal open side of the vaporizing tube 9 is bent outward, and this forms the fuel oil scattering end 16 at the periphery. An electric motor 17 is housed in the above-mentioned blower chamber 2, and the blower impeller 1B is directly connected to the rotating shaft 10 of the electric motor 1T, and the vaporizing cylinder 9 and the blower impeller 18 are operated by rotating the rotating shaft 100 times. Rotates at high speed. An air intake port 19 is opened on one side of the ventilation chamber 2, and an air volume adjustment device 20 is disposed in the air intake port 19. Combustion air, a smaller amount of combustion air, and even more combustion air than the amount of air blown during vaporization combustion is inhaled into the ventilation chamber 2 through the intake port 19, and then passed through the vaporization cylinder 9. Air can be blown into the gas chamber 8.

As shown in FIGS. 1 to 3 as examples, the air volume adjustment device 20 includes a fixed damper 21 and a rotation device 23 that are fixedly installed in an intake cylinder 19a with an intake port 19 opened. The rotary damper 22 has the same shape and is rotated in three stages.
is supported concentrically on the outside of the fixed damper 21.

There are two main intake windows 2 at symmetrical positions on the surface of the fixed damper 21.
4 is opened, and two sub-intake windows 25 smaller than the main intake window 24 are opened at 5 at symmetrical positions on the surface of the rotary damper 22, facing the main intake window 24. When the rotary damper 22 is rotated to the first position relative to the fixed damper 21 as shown in the fourth figure, a constant amount of combustion air is generated for steady vaporization combustion, or the intake port 19 is used as a pillar to blow air into the ventilation chamber 2. The main intake window 24 and the sub-intake window 2
When the rotary damper 22 is rotated to the second stage position as shown in Figure 5, the main intake window 24 and the sub-intake window 25 are opened. In between, a trace intake window 27 is opened to reduce the amount of combustion air from the flame chamber 4 in the gas chamber B so that backfire combustion occurs, and the combustion air taken in through the trace intake window 27 flows into the gas chamber 8. The remaining unburned gas is completely combusted, and the sixth
When the rotary damper 22 is rotated to the third stage position as shown in the figure, an increasing intake window 28, which is larger than the fixed intake window 26, is opened between the main intake window 24 and the auxiliary intake window 25, and the gas chamber 8 The combustion gas after being backfired and smoldered inside is quickly discharged to the outside from a gas chamber 8S and a flame chamber 7 using an increased amount of combustion air.

Reference numeral 29 indicates a rotary damper 22 relative to the fixed damper 21.
The control device 29 is connected to the oil supply pipe 15 to automatically control the fuel supply pipe 15 from the first stage position to the third stage position automatically. , the control device 29 is activated by the signal MIc to automatically control the amount of combustion air blown as described above.

Reference numeral 30 denotes an ignition plug arranged so as to face the inside of the flame chamber T in the vicinity of the fuel splashing position.

31 is a combustion chamber of a domestic space heater, water heater, or industrial dryer into which the vaporizing burner is inserted; 32 is an exhaust port of the combustion chamber 31; As described above, even if the burner is inserted into the combustion chamber 31 with a large area and the burner is operated, an increased amount of combustion air is blown at the end, so even if the vaporization combustion stops. Sometimes, even if unburned gas remains in the combustion chamber 31, the unburned gas is diluted with an increased amount of combustion air and quickly exhausted to the outside.
This prevents bad smells and salt from being dissipated into the surrounding area.

What is the air volume adjustment device 20 that switches the combustion air blowing volume from the first stage to three stages in order at the same time as the supply of fuel is stopped? The present invention can be easily achieved even with embodiments other than those described in FIGS. 2 and 3.

That is, the air volume adjusting device 20' of the second embodiment shown in FIG.
A knot-shaped fixed damper 21 with one side closed and the other side open.
' is fixed horizontally, and a rotary damper 2g having approximately the same shape and directly connected to the rotary device 23 is fitted into the inner extension of the cylindrical fixed damper 21' so as to be rotatable. With,
Two main intake windows 24' are provided at positions symmetrical to the cylinder wall of the fixed damper 21', and two main intake windows 24' are provided at positions symmetrical to the cylinder wall of the rotary damper 22' facing the main intake windows 24'. The rotating device 23 is opened by opening two small sub-intake windows 25'.
When the rotary damper 22' is rotated to the second stage position shown in FIG. 9th
When the rotary damper 22' is rotated to the second stage position shown in the figure, a small amount intake window 27' is formed between the main intake window 24' and the auxiliary intake window 25', and the rotary damper 22' is further rotated to the third stage position shown in FIG. When activated, the increased intake windows 28' are opened between the main intake window 24' and the auxiliary intake window 25', and combustion air is blown into the combustion chamber. The three functions of evacuation of combustion gas can be achieved accurately.

Effects of the Invention In short, the present invention has the above-mentioned technical means, so that, for example, after the evaporated gas of fuel is mixed with combustion air and forced into the gas chamber 8, the fumes are injected into the flame chamber T. Even with a vaporizer burner that can perform vaporization combustion, when the vaporization combustion is extinguished, the supply of fuel is stopped and the amount of combustion air blown to the gas chamber 8 is changed from the amount during vaporization combustion to the gas chamber 8.
After the residual unburned gas in the gas chamber 8 is combusted in the gas chamber 8 and the flame chamber T in a very instantaneous amount to the extent that backfire combustion occurs in the combustion chamber, the amount of gas remaining in the gas chamber 8 is immediately Conventionally, it is possible to extinguish the combustion gas while extinguishing it to the outside from the gas chamber 8 and the flame chamber T by controlling the amount to increase. It is possible to reliably eliminate the emission of unpleasant odors, achieve clean vaporization combustion from start to finish, and perform efficient heating work under good burial conditions. At the same time, a device for controlling the amount of combustion air blown into a fixed amount state, a small amount state, and an increased amount state is installed in the oil feed pipe 15 inserted into the vaporization m9 and in the air intake port 19 of the ventilation chamber 2, and in addition, the air inlet port 19 of the ventilation chamber 2 is opened. The air volume control device 20 equipped with adjustable main and sub-intake windows 24° and 25 is connected to a control device 29, and the control device 29 simultaneously stops the supply of solvent to the oil pipe 15 through the main and sub-intake windows. 24. 25 is automatically switched and adjusted so that it becomes a quantitative intake window 26, a trace intake window 27, and an increased intake window 28, and the unburned gas with a strong odor generated in the gas chamber 8 is reliably removed. It has the effect of being able to burn it and discharge it to the outside.

[Brief explanation of drawings]

The drawings show a device for preventing bad odors during fire extinguishing in a vaporizing burner for carrying out the method of the present invention. The side view of the dynamic damper, Figures 4 to 6 are diagrams of the operating state of the air volume adjustment device, where Figure 4 is a side view with the quantitative intake window open, and Figure 5 is a side view with the minute intake window open. FIG. 6 is a side view of the increased intake window in the open state, FIG. Figure 8 or 1
Figure 0 is a diagram showing the operating state of the wind regulating device according to the above,
Fig. 8 is a longitudinal side view of a 1g unit with a fixed amount intake window opened, Fig. 9 is a longitudinal side view of 1g with a small amount intake window opened, and Fig. 10 is a longitudinal side view of a 1g unit with an increased intake window opened. It is a diagram. 1... Combustion tube, 2... Blow chamber, 7... Flame chamber, 8
... Gas chamber, 9 ... Vaporization cylinder, 15 ... Oil pipe, 1
9... Intake port, 20... Air volume adjustment device, 24...
Main intake window, 25... Sub-intake window, 26... Fixed intake window, 27... Trace intake window, 28... Increased intake window, 29
... Control device Tokukin Applicant Co., Ltd. Dowa Figure 4 Figure 5 Figure 6 Figure 6 9 25° sub pLx: cs-

Claims (3)

[Claims] (1) In a device in which vaporized fuel gas is mixed with combustion air and injected into a gas chamber under pressure and then blown into a flame chamber to cause vaporization combustion, the supply of fuel is stopped when the vaporization combustion is extinguished. At the same time, the amount of combustion air blown into the gas chamber is changed from a constant amount during vaporization combustion to an extremely small amount instantaneously to the extent that backfire combustion occurs in the gas chamber, so that residual unburned gas in the gas chamber is removed from the gas chamber. Fire extinguishing in a vaporizing burner, characterized in that after combustion in a flame chamber, the combustion gas is extinguished while being expelled from the gas chamber and the flame chamber by controlling the amount to be increased immediately beyond the fixed amount during vaporization combustion. How to prevent bad odors. (2) A vaporizer cylinder communicating with the gas chamber is rotatably arranged in a combustion cylinder with a gas chamber provided on the inner periphery, and one side of the combustion cylinder is provided with a gas chamber for supplying combustion air through the vaporizer cylinder. An air volume adjustment device equipped with a ventilation chamber capable of blowing air indoors, comprising an oil feed pipe inserted into the vaporizing cylinder and an opening and a main and sub-intake window arranged at the intake port of the ventilation chamber and whose opening can be adjusted. are connected to a control device, and at the same time when the control device stops the fuel supply to the oil pipe, the main and sub-intake windows are connected to the combustion gas through the quantitative intake window during vaporization combustion and the trace intake window during flashback combustion. A device for preventing bad odors during extinguishing of a vaporizing burner, characterized in that the openings are sequentially adjusted so as to serve as intake windows for increased intake during discharge. (3) The air volume adjustment device is characterized in that a fixed damper and a rotating damper are formed adjacent to each other, and the main intake window opened in the fixed damper is larger than the auxiliary intake window opened in the rotating damper. A device for preventing bad odor during extinguishing of a vaporizing burner according to claim 2.