JP4026341B2 - Fire extinguishing control device for pot type oil combustor - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a fire extinguishing apparatus for enhancing safety when a pot-type oil combustor falls.
[0002]
[Prior art]
The pot type oil combustor is vaporized at the bottom of the pot where the fuel supplied in the pot is hot due to the combustion heat, and a part of the vaporized gas is burned by the air supplied from the air port on the side wall of the pot. The burned gas and the remaining vaporized gas are burned completely in the combustion chamber above the pot. Then, when the fuel pump is stopped by the fire extinguishing operation, the fuel remaining in the fuel pipe is gradually supplied to the pot, so that the combustion continues for a while after the fire extinguishing operation.
[0003]
For this reason, there is a demand for shortening the fire extinguishing time because there is an embers in the pot during an earthquake or when the oil combustor falls, so there is a need to shorten the fire extinguishing time. There is a proposal to shorten the fire extinguishing time by connecting a pipe and pushing the fuel in the fuel pipe into the pot by the air sent from the air pipe during the fire extinguishing operation.
[0004]
That is, when the oil combustor falls, the fuel pushed out by the air pressure of the blower drops on the pot side wall away from the vaporization part on the bottom of the pot, so the combustion balance is broken and the combustion cannot be continued and the fire is extinguished almost instantaneously. Was confirmed.
[0005]
However, if the structure is such that the remaining fuel is pushed out into the pot, the fuel is dripped toward the bottom of the pot, which is the vaporization section, in the case of fire extinguishing performed with the oil combustor standing upright, so that the fuel is pushed out. The burned-out fuel burned in the vaporization part at the bottom of the pot, and the fire extinguishing time was longer than when it fell.
[0006]
For this reason, as a structure that shortens the fire extinguishing time even during normal fire extinguishing, there is one with a high place in the middle of the fuel pipe from the connection part of the fuel pipe and the air pipe to the pot, and it exceeds the high place during combustion The fuel is supplied, and the oil level of the air pipe balances with the blowing pressure of the blower to form a lower oil level than the height of the fuel pipe.
[0007]
Then, when the fuel pump and the blower are stopped by the fire extinguishing operation, the blowing pressure decreases and the oil level of the air pipe rises, and the fuel in the fuel pipe is sucked into the air pipe over the high place by the siphon effect, The fuel inside burns out quickly and extinguishes almost instantaneously.
[0008]
On the other hand, when the oil combustor falls, the height of the fuel pipe turns sideways and is no longer high, so the fuel is pushed out to the pot by the blower's blowing pressure, so a fire extinguishing method that supports both normal and falling Can be realized.
[0009]
[Problems to be solved by the invention]
However, the direction of the overturn of the oil combustor may not be determined, and depending on the direction of the overturn, the fuel may flow to the fuel pump side and the fuel may remain in the fuel pipe. It was found that the fuel remaining in the fuel pipe dropped into the pot, and depending on the temperature of the pot at this time, the fuel dropped from the fuel pump might cause reignition.
[0010]
And if the fuel dripped from the fuel pipe burns out, the fire is extinguished, but if the blower stops halfway, air will not be supplied to the pot, so the time to extinguish will be longer and the inside of the pot will be short of air. It is not preferable from the viewpoint of safety because the inside of the pot becomes hot. In addition, if the operation of the oil combustor was stopped, but the flame remained, the user misunderstood that the fire could not be extinguished due to a failure, which caused anxiety.
[0011]
[Means for Solving the Problems]
The present invention solves the above-described problem. A bottomed cylindrical pot 3 having a large number of air holes 3a provided in a side wall is mounted in a wind tunnel 2 to which combustion air is sent by a blower 1, and the pot 3 A fuel pump 5 is attached to the fuel pipe 4 connected to the inside, and an automatic fire extinguishing means 8 that is operated by signals from the fire extinguishing operation means 6 and the vibration detection detector 7 is provided. The automatic fire extinguishing means 8 is connected to the blower 1 and the fuel pump 5. In the oil combustor which stops the combustion of the pot 3 by stopping the data, the data detection means 9 for detecting the signal of the vibration detection detector 7 and the determination means 10 for detecting the vibration and the overturn according to the output of the data detection means 9 The determination means 10 outputs a starting signal that differs depending on whether it is an earthquake or a fall to the automatic fire extinguishing means 8, and the automatic fire extinguishing means 8 stops the fuel pump 5 when the oil combustor falls and keeps the blower 1 for a predetermined time. While rotating at high speed, blower 1 Fast during rotation to erect the oil burner when the signal sensing vibration detector 7 has been detected is to rotate the blower 1 second predetermined time fast.
[0012]
Further, a temperature detecting means 11 for detecting the temperature of the bottom surface of the pot 3 is attached. When the oil combustor falls, the temperature detecting means 11 detects the temperature of the pot 3, and the oil combustor is erected to detect vibration. When the temperature detection means 11 detects a predetermined temperature or higher when the signal of the fan 7 is output, the temperature of the pot 3 is not lowered after the blower 1 is stopped by rotating the blower 1 at a high speed for a second predetermined time. Even if this happens, the ignition can be surely prevented, thus improving safety.
[0013]
Further, when the blower 1 rotates at a high speed by a signal from the vibration detector 7 when the oil combustor is set upright, the notification means 12 is activated, so that the user can be informed that the fire extinguishing operation is in progress. .
[0014]
[Action]
When the oil combustor falls, the fuel may remain in the fuel pipe 4 depending on the direction of the fall. When the oil combustor is set upright when the pot 3 is still hot, the fuel in the fuel pipe 4 is transferred to the pot 3. It may reignite when dropped on the vaporization part.
[0015]
In the present invention, the signal from the vibration detector 7 is detected by the data detection means 9, and the determination means 10 sends the activation signal at the time of the earthquake and the activation signal at the time of the fall to the automatic fire extinguishing means 8 according to the signal from the data detection means 9. Output.
[0016]
When the fall start signal is output from the judging means 10, the automatic fire extinguishing means 8 stops the fuel pump 5 and rotates the blower 1 at a high speed, so that the fuel in the fuel pipe 4 is sent from the vaporizing portion of the pot 3. It drops on the side wall part distant and the balance of combustion breaks and extinguishes fire. After the fire extinguishes, the blower 1 forcibly blows low-temperature indoor air to the pot 3 to cool the pot 3.
[0017]
When the oil combustor is erected during the high speed rotation of the blower 1 and the ON signal of the vibration detector 7 is detected, the automatic fire extinguishing means 8 rotates the blower 1 at a high speed for a second predetermined time. The low-temperature indoor air is forcibly blown to the pot 3 to prevent reignition of the fuel, and the pot 3 is cooled to a temperature at which the fuel does not ignite.
[0018]
【Example】
The present invention will be described with reference to the embodiments shown in the drawings. 2 is a wind tunnel to which combustion air is supplied, 3 is a bottomed cylindrical pot disposed in the wind tunnel 2, and 1 is a combustion air supplied to the pot 3. The blower 3a is a number of air holes opened in the side wall of the pot 3 so that combustion air can be supplied from the wind tunnel 2.
[0019]
13 is an oil tank for temporarily storing fuel to be supplied to the pot 3, 4 is a fuel pipe for supplying fuel from the oil tank 13 to the pot 3, and 5 is a fuel pump constituted by an electromagnetic pump attached in the middle of the fuel pipe 4, Reference numeral 14 denotes a heater attached from the side wall of the pot 3 through a space from the bottom surface of the pot 3, and reference numeral 15 denotes a combustion chamber arranged continuously at the upper part of the pot 3.
[0020]
When the operation of the oil combustor is started, the pot 3 is heated by the heater 14, and when the pot 3 reaches a temperature suitable for combustion, the fuel pump 5 and the blower 1 are operated to supply fuel and air to the pot 3. The fuel sent to the pot 3 is ignited by the heat of the heater 14 and burned.
[0021]
During combustion, the fuel dripping from the fuel pipe 4 is vaporized at the bottom surface of the pot 3 which has become hot due to the combustion heat, and a part of the vaporized gas is combusted by the air supplied from the air holes 3a on the side wall of the pot 3. The burned gas and the remaining vaporized gas are completely burned in the combustion chamber 15 at the top of the pot 3.
[0022]
6 is a fire extinguishing operation means for performing a fire extinguishing operation of the oil combustor, 7 is a vibration detector attached to the mounting base of the oil combustor, 8 is an operation signal of the fire extinguishing operation means 6 or a signal of the vibration detector 7 This is an automatic fire extinguishing means for extinguishing the pot 3 during combustion.
[0023]
When the fire extinguishing operation means 6 is operated, the automatic fire extinguishing means 8 stops the operation of the fuel pump 5 and reduces the amount of air blown from the blower 1 to reduce the fuel remaining in the pot 3 and the fuel supplied after the fire extinguishing operation. Combustion and natural fire extinguishing, but after the fire extinguishing operation, the fuel remaining in the fuel pipe is supplied to the pot 3 little by little. It becomes.
[0024]
Reference numeral 16 denotes an air pipe that connects the discharge side of the blower 1 and the middle of the fuel pipe 4. The fuel pipe 4 extends from the connecting portion between the fuel pipe 4 and the air pipe 16 to the pot 3 and from the blower 1 to the fuel. A height is provided in the middle of the air pipe 16 reaching the pipe 4, and the height of the air pipe 16 is higher than the height of the fuel pipe 4.
[0025]
The fuel in the fuel pipe 4 also penetrates into the air pipe 16, but when the oil combustor is stopped, it balances with the atmospheric pressure to form an oil surface having the same height as the height of the fuel pipe 4, while being burned. The discharge pressure of the fuel pump 5 and the blowing pressure of the blower 1 are balanced to form an oil level lower than the height of the fuel pipe 4.
[0026]
Then, when the fire extinguishing operation means 6 is operated and the fuel pump 5 is stopped by the automatic fire extinguishing means 8 and the blown air volume of the blower 1 is reduced, the oil level in the air pipe 15 becomes higher than the height of the fuel pipe 4 due to the lowered blowing pressure. A force to rise to the same height works, and the fuel at the tip of the fuel pipe 4 is sucked into the air pipe 16 beyond the height by the siphon effect. For this reason, fuel does not remain at the tip of the fuel pipe 4 and the fuel supply to the pot 3 is cut off, so that the fuel in the pot 3 burns out quickly and can be extinguished in a short time.
[0027]
When the oil combustor is subjected to strong vibration due to an earthquake or the like, the automatic fire extinguishing means 8 is activated by the signal from the vibration detection detector 7, the fuel pump 5 is stopped, and the blow pressure of the blower 1 is reduced. The fuel at the tip of the fuel pipe 4 is sucked into the air pipe 16 over the height due to the siphon effect, so that the fuel supply to the pot 3 is cut off and the fuel in the pot 3 burns out quickly and almost instantly. Can be extinguished.
[0028]
On the other hand, when the oil combustor falls, the height of the fuel pipe 4 faces sideways and is not high, so that the blowing pressure of the blower 1 wins and the fuel of the fuel pipe 4 is pushed out to the side wall portion of the pot 3. Since it drops on the side wall of the pot 3 away from the vaporization portion on the bottom surface of the pot 3, the combustion balance in the pot 3 is broken and the combustion cannot be continued, and the fire can be extinguished almost instantaneously.
[0029]
Although the above structure is effective as a fire extinguishing method effective for both normal and overturning, the direction of the overturn of the oil combustor may not be determined, and depending on the overturned direction, the fuel pump 5 side may be fueled. May flow in the fuel pipe 4 or the air pipe 16, and the fuel remaining in the fuel pipe 4 may drop into the pot 3 when the oil combustor is set upright.
[0030]
If the oil combustor is set upright when the temperature of the pot 3 is not sufficiently lowered, there is a possibility that the fuel dripping from the fuel pipe 4 causes reignition in the vaporizing portion of the pot 3. At this time, if the fuel dripped from the fuel pipe 4 burns out, the fire is extinguished, but if the blower 1 stops halfway, air is not supplied, so the time until the fire extinguishes becomes longer, and the inside of the pot 3 is short of air. Since wrinkles occur and the pot 3 becomes hot, the user feels uneasy.
[0031]
The present invention solves the above-mentioned problem, wherein 9 is a data detecting means for detecting an ON-OFF signal of the vibration detector 7, and 10 is a determination for detecting an earthquake and a fall according to the output of the data detecting means 9. The determination unit 10 detects vibration when the vibration detector 7 is repeatedly turned on and off, and detects a fall when the OFF signal of the vibration detector 7 continues for 2 seconds or more.
[0032]
When the start signal at the time of falling is output from the judging means 10, the automatic fire extinguishing means 8 stops the fuel pump 5 and rotates the blower 1 at a high speed for a predetermined time, and the fuel in the fuel pipe 4 is potted by the blow pressure of the blower 1. 3 drops to the side wall portion of the pot 3 away from the vaporization portion on the bottom surface of the pot 3, the combustion balance in the pot 3 is broken, the combustion cannot be continued, and the fire is extinguished almost instantaneously. And since the air blower 1 is rotating at high speed even after the combustion in the pot 3 stops, the pot 3 can be cooled.
[0033]
When the oil combustor is set upright during the high speed rotation of the blower 1 and the ON signal of the vibration detector 7 is detected, the automatic fire extinguishing means 8 rotates the blower 1 at a high speed for a second predetermined time. Even if low temperature air in the room is forcibly blown in 3 and fuel remains in the fuel pipe 4 and drops into the pot 3, the pot is prevented from igniting the fuel by the air blown to the vaporizing portion of the pot 3. 3 can be cooled until the temperature at which the fuel does not ignite.
[0034]
Even if the fuel dropped into the pot 3 is re-ignited, air is sent to the pot 3 by the blower 1, so that the generation of soot and the temperature rise of the pot 3 are suppressed, and combustion inside the pot 3 is promoted. Since the fuel burns out quickly, the fire can be extinguished in a short time.
[0035]
Further, when the oil combustor is set upright during the fire extinguishing operation by overturning, the temperature of the pot 3 is not lowered, so the blower 1 is operated. However, after the blower 1 is stopped, the temperature of the pot 3 is sufficient. Therefore, the fire extinguishing operation of the automatic fire extinguishing means 8 is stopped, and there is no fear of re-ignition even if the blower 1 is not operated when the ON signal of the vibration detection detector 7 is detected.
[0036]
Further, even if the blower 1 is stopped before the oil combustor is erected, there is a risk of reignition if the temperature of the pot 3 is not lowered. In the embodiment of the present invention, reference numeral 11 denotes a temperature detector attached to the bottom surface of the pot 3, which detects the temperature of the pot 3 when the oil combustor falls, and the ON signal of the vibration detector 7 is detected. Sometimes, when the temperature detecting means 11 detects a predetermined temperature or higher, the blower 1 rotates at a high speed for a second predetermined time, so that ignition can be reliably prevented.
[0037]
On the other hand, when the temperature detecting means 11 detects the temperature below the predetermined temperature before the ON signal of the vibration detector 7 is detected, the temperature of the pot 3 is sufficiently lowered and there is no fear of reignition. Since it is not necessary to operate the blower 1 even if the vibration detection detector 7 is detected to be upright, the fire extinguishing operation of the automatic fire extinguishing means 8 can be stopped.
[0038]
In addition, if the blower 1 is activated when the oil combustor is upright after the blower 1 is stopped, there is a possibility that the user may misunderstand that it is out of order. Fire extinguishing operation becomes impossible. 12 is an informing means provided in the oil combustor. The informing means 12 operates when the oil combustor is upright and the blower 1 rotates at a high speed, and informs the user that the fire extinguishing operation is in progress. Even if the blower 1 is activated when the combustor is upright, the user will not be mistaken for a malfunction, and can be used with confidence.
[0039]
【The invention's effect】
As described above, according to the present invention, when the judging means 10 outputs a start signal when the oil combustor falls, the automatic fire extinguishing means 8 stops the fuel pump 5 and rotates the blower 1 at a high speed to make the pot 3 Since the pot 3 is cooled by the forced air blow of the blower 1 after the inside combustion is stopped, the temperature of the pot 3 can be lowered in a short time.
[0040]
When the oil combustor is set upright during the high speed rotation of the blower 1 and the ON signal of the vibration detector 7 is detected, the blower 1 is rotated at a high speed for a second predetermined time. Even if the fuel remains in the fuel pipe 4 and drops when the oil combustor erects, the blower 1 is forced to blow into the pot 3 by rotating at high speed. Thus, the ignition of the fuel is prevented, and the pot 3 is cooled to a temperature at which the fuel cannot be ignited.
[0041]
Further, the temperature detecting means 11 is attached to the bottom surface of the pot 3 to detect the temperature of the pot 3 at the time of overturning, and when the ON signal of the vibration detection detector 7 is detected, the temperature detecting means 11 detects a predetermined temperature or more. If so, the blower 1 is rotated at a high speed for a second predetermined time, so that even if the temperature of the pot 3 does not drop after the blower 1 stops, ignition can be surely prevented and safety is improved. Was able to.
[0042]
In addition, when the oil combustor is upright and the blower 1 rotates at high speed, the notification means 12 is activated to notify the user that the fire extinguishing operation is being performed. It became possible to use with confidence by enabling a reliable fire extinguishing operation.
[Brief description of the drawings]
FIG. 1 is a block diagram of a pot type oil combustor showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a main part of a pot type oil combustor showing an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Blower 2 Wind tunnel 3 Pot 3a Air hole 4 Fuel pipe 5 Fuel pump 6 Fire extinguishing operation means 7 Vibration detection detector 8 Automatic fire extinguishing means 9 Data detection means 10 Determination means 11 Temperature detection means 12 Notification means

Claims (3)

A bottomed cylindrical pot 3 provided with a large number of air holes 3a on the side wall is mounted in a wind tunnel 2 to which combustion air is sent by a blower 1, and a fuel pump 5 is connected to a fuel pipe 4 connected to the pot 3. Installation,
In addition, an automatic fire extinguishing means 8 that operates in response to signals from the fire extinguishing operation means 6 and the vibration detector 7 is provided,
In the oil combustor in which the automatic fire extinguishing means 8 stops the blower 1 and the fuel pump 5 to stop the combustion of the pot 3.
A data detection means 9 for detecting the signal of the vibration detector 7 and a determination means 10 for detecting vibration and a fall according to the output of the data detection means 9 are provided. The determination means 10 differs between an earthquake and a fall. The start signal is output to the automatic fire extinguishing means 8,
The automatic fire extinguishing means 8 stops the fuel pump 5 when the oil combustor falls and rotates the blower 1 at a high speed for a predetermined time. The oil combustor stands upright while the blower 1 rotates at high speed, and the signal from the vibration detector 7 A fire extinguishing control device for a pot type oil combustor, characterized in that the blower 1 is rotated at a high speed for a second predetermined period of time when the air is detected. A temperature detecting means 11 for detecting the temperature of the bottom surface of the pot 3 is attached. When the oil combustor falls, the temperature detecting means 11 detects the temperature of the pot 3 and erects the oil combustor to detect vibration. 2. The fire extinguishing control device for a pot type oil combustor according to claim 1 , wherein when the temperature detection means 11 detects a temperature equal to or higher than a predetermined temperature when the signal is output, the blower 1 is rotated at a high speed for a second predetermined time. . 3. The pot type according to claim 1 , wherein when the blower 1 rotates at a high speed by a signal from the vibration detection detector 7 when the oil combustor is erected, the notification means 12 is operated. Oil fire extinguishing control device.

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