JP2006207978A - Safety device for oil burner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety device detecting adhesion of tar to a wick of an oil burner to cope therewith before the adhesion of tar becomes worse. <P>SOLUTION: In the safety device for the oil burner, a burner 5 of the oil burner is arranged on a wick housing tube 4 composed of a wick inner tube 2 erected from a bottom plate of an oil tank 1, and a wick outer tube 3 attached to a top face plate of the oil tank 1, the wick 6 is attached to vertically move to a gap of the wick housing tube 4, and a wick vertically moving device 7 is provided for vertically moving the wick 6. A temperature detecting means 8 is provided for detecting a temperature of a top part of the wick inner tube 2 arranged in an internal space A of the wick inner tube 2, an operation switch 9 opened and closed by wick vertical operation of the wick vertically moving device 7 is provided for outputting operation and stoppage of the oil burner, and a timer means 10 is provided for starting counting on the basis of an operation stoppage signal of the operation switch 9 during quenching operation. The temperature of the top part of the wick inner tube 2 is detected by the temperature detecting means 8 after passage of a predetermined time from the quenching operation, and when the detected temperature of the temperature detecting means 8 is a predetermined temperature or more, an alarm means 11 is operated to notify a user of malfunction. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a safety device for extinguishing a core up-down type oil combustor.

  The core up-down type oil combustor is composed of a core inner cylinder standing up from the oil tank and a core outer cylinder attached to the top plate of the oil tank, and a core installed in the gap between the core accommodation cylinders so as to be movable up and down. And a core up / down shaft for performing a core up / down operation, and a combustion cylinder is disposed above the core housing cylinder.

When the upper and lower shafts are pivoted in the direction of raising the core, the upper end of the core protrudes from the upper part of the core housing cylinder and is positioned below the combustion cylinder. When the core is ignited by an ignition device such as an ignition heater, the lower end of the core The sucked-up fuel in the oil tank is vaporized at the upper end of the wick and burned by receiving supply of air in the combustion cylinder. During combustion, adjust the amount of combustion by operating the vertical axis of the core to change the height of the core, rotate the vertical axis of the core in the direction of lowering the core, and lower the core to the fire extinguishing position. Moves into the core housing cylinder and extinguishes fire (see Patent Document 1).
Japanese Utility Model Publication No. 6-31317

  If the kerosene used in the oil combustor is normal kerosene, there will be no vaporization failure, and the kerosene in the oil tank is sucked up by the core and burned by the burner heat, but the kerosene used If the kerosene has deteriorated due to carrying over for one year or mixed with water, high molecular weight components that are difficult to vaporize tar and remain attached to the core at the top of the core. The spread of the flame is hindered by the tar adhering to the flame, causing poor ignition, and at the time of extinguishing the flame, the flame may remain in the portion where the tar adhered, and the extinguishing time may be prolonged.

  And if you continue to use bad kerosene, the amount of tar will increase, the gap between the core and the core housing cylinder will become narrow, hindering the top and bottom of the core, and the core will not fall down into the core housing cylinder at the time of fire extinguishing, making it impossible to extinguish fire There is. In addition, even if the fire extinguisher becomes inoperable, the user may not be aware, and the oil combustor continues to burn as it is, which may lead to serious troubles such as generation of incomplete combustion gas and fire.

  In addition, although the adjustment range of the fuel amount is displayed for those that can adjust the combustion amount, the movement distance of the wick in the adjustment range of the combustion amount is short, so it is difficult to adjust the combustion amount manually, and the wick is lowered. Too much use may result in incomplete combustion.

  Furthermore, if combustion is continued with the core lowered, the core of the core becomes hot and vaporization of kerosene is promoted.The amount of kerosene vaporization increases with respect to the burner combustion amount, and part of the vaporized kerosene vapor is Instead of being used for combustion, condensation occurs in the burner and returns to the core. In this case, even if normal kerosene is used, kerosene will change in quality once vaporized, which causes the kerosene that has condensed and returned to the core to tar and adhere to the core. It is desirable to inform the range.

  The present invention solves the above-mentioned problem, and is provided with a core inner cylinder 2 erected from the bottom plate of the oil tank 1 and a core outer cylinder 3 attached to the upper surface plate of the oil tank 1. A burner 5 of an oil combustor is disposed on a core housing cylinder 4 constituted by the outer cylinder 3, a core 6 is attached to the gap of the core housing cylinder 4 so as to be movable up and down, and a core lifting device that moves the core 6 up and down. In the oil combustor provided with 7, the temperature detecting means 8 for detecting the temperature of the upper portion of the core inner cylinder 2 and the operation for opening / closing the core combustor 7 by opening / closing the core up / down device 7 and outputting the operation / stop of the oil combustor are output. A switch 9 and a timer means 10 for measuring a predetermined time are provided. The timer means 10 starts counting upon receiving an operation stop signal of the operation switch 9 at the time of fire extinguishing operation, and the temperature detecting means 8 performs the core detection after a predetermined time has elapsed. The temperature of the upper part of the inner cylinder 2 is detected, and the temperature detection means 8 is above a predetermined temperature. It is characterized in that to operate the alarm means 11 upon detection.

  The oil combustor sets the emergency fire extinguishing core lowering position lower than the normal fire extinguishing core lowering position, and the temperature detecting means 8 is attached to the inner space A of the core inner cylinder 2 and the normal fire extinguishing core lowering position. By disposing at a position lower than the position and higher than the core lowering position for emergency fire extinguishing, heating by the heat of the burner 5 is suppressed during combustion, and the temperature of the core inner cylinder 2 can be accurately detected during fire extinguishing.

  Further, the temperature detecting means 8 is disposed at the center position of the inner space A of the core inner cylinder 2 and detects the ambient temperature of the inner space A of the core inner cylinder 2, so that a flame remains partially during extinguishing the core inner cylinder. Even when a temperature difference between the inner wall surfaces of the core 2 occurs, the atmosphere temperature in the inner space A of the core inner cylinder 2 rises regardless of the position of the flame remaining in the core 6, so that the temperature during fire extinguishing can be accurately detected. is there.

  Further, an operating plate 7a for driving the operation switch 9 is attached to the core lifting device 7, and the operation plate 7a closes the operation switch 9 between the maximum combustion position and the minimum combustion position, and the minimum combustion position and the fire extinguishing position are set. When the lead 6 is lowered too much during the adjustment of the combustion amount, the operation switch 9 issues an operation stop signal and the timer means 10 is activated, and the temperature detection means 8 is activated after a predetermined time. Detects a temperature equal to or higher than a predetermined temperature and activates the alarm means 11, so the user can be informed of the adjustment range of the combustion amount.

  If tar adheres to the wick 6, flame may remain in the part where the tar adheres during fire extinguishing, and the fire extinguishing time may be longer than usual. If the fire extinguishing time becomes longer, the temperature of the upper part of the burner 5 or the core housing cylinder 4 decreases. The time to do is also longer. The present invention includes a timer means 10 that operates in response to an operation stop signal from the operation switch 9 during a fire extinguishing operation, and a temperature detection means 8 that detects the temperature of the upper portion of the core housing cylinder 4. The temperature detecting means 8 detects the temperature of the upper part of the core accommodating cylinder 4 by the detecting means 8, and when the fire extinguishing time becomes longer, the temperature detecting means 8 detects a predetermined temperature or more, so that the adhesion of tar on the core 6 can be detected. It became.

  When the temperature detecting means 8 detects a predetermined temperature or higher, the alarm means 11 is activated to notify the user, so that the tar adhering to the lead 6 is burned when the user burns the lead 6. Since tar can be removed and tar can be removed before the amount of tar attached increases, it has become possible to prevent troubles that make fire extinguishing impossible.

  In addition, the alarm means 11 is activated when the core 6 does not fall into the core housing cylinder 4 due to adhesion of tar to the core 6 or an operation mistake during fire extinguishing, and the alarm means 11 is activated. It is possible to prevent serious troubles such as generation of incomplete combustion gas and fire.

  In the above configuration, since the upper surface of the core inner cylinder 2 is heated by the heat of the burner 5 and becomes high temperature, there is a problem of heat resistance of the temperature detecting means 8. Since the sucked-up fuel keeps the temperature low, even if a flame remains at the tip of the wick 6 during fire extinguishing, there is almost no temperature change, and accurate temperature detection during fire extinguishing is impossible. The temperature detecting means 8 of the present invention is disposed at a position lower than the normal fire extinguishing core lowering position and higher than the emergency fire extinguishing core lowering position, and the temperature rise by the burner 5 during combustion can be suppressed. A low-priced temperature detection means 8 can be used to suppress an increase in the price of an oil combustor, and an accurate temperature can be detected without being affected by the low-temperature fuel sucked up by the wick 6 during fire extinguishing Thus, the adhesion of tar can be reliably detected.

  Further, if the temperature detecting means 8 is arranged at the center position of the inner space A of the core inner cylinder 2, even if a flame remains partially on the core 6 during fire extinguishing and a temperature difference occurs on the inner wall surface of the core inner cylinder 2, Since the ambient temperature of the internal space A of the core inner cylinder 2 in which the temperature detecting means 8 is arranged rises, it is possible to reliably detect the temperature when the fire remains in the core 6 and the fire extinguishing time becomes long during fire extinguishing. It was possible to reliably detect the adhesion of.

  Further, the core lifting device 7 is provided with an operation plate 7a for turning on and off the operation switch 9. When the combustion amount is adjusted, the operation plate 7a is operated when the lead 6 is lowered too much to fall out of the combustion amount adjustment range. The timer means 10 operates upon receiving an operation stop signal of the operation switch 9 after being separated from the switch 9, and the temperature detecting means 8 detects the predetermined temperature or more and the alarm means 11 is activated after a predetermined time has elapsed. Can recognize that the lead 6 has been lowered too much, can no longer continue to be used with the lead 6 lowered, can prevent tar from adhering to the lead 6, and can be used as a safety device to prevent incomplete combustion It is.

  The present invention will be described by way of an embodiment shown in the drawings. 1 is an oil tank of an oil combustor, 2 is a core inner cylinder erected from the bottom plate of the oil tank 1, and 3 is a core outer cylinder attached to an upper surface plate of the oil tank 1. Reference numeral 4 denotes a core housing cylinder constituted by the core inner cylinder 2 and the core outer cylinder 3, and 6 a core mounted in a gap between the core housing cylinder 4. The fuel in the oil tank 1 is sucked up by the lower end of the core 6. Is supplied to the upper end of the lead 6.

  7 is a core lifting device attached to the core housing cylinder 4, 7 b is a core vertical shaft constituting the core lifting device 7 inserted from the outside of the core housing cylinder 4, and 7 c is an outer end of the core vertical shaft 7 b. The core up / down knob is attached. When the core up / down knob 7c is operated to rotate the core up / down shaft 7b, the core 6 moves up and down in the gap of the core housing cylinder 4.

  Reference numeral 5 denotes a burner composed of a combustion cylinder disposed on the upper part of the core inner cylinder 2 and the core outer cylinder 3. The upper and lower shafts 7 b are rotated in the center raising direction so that the upper end of the core 6 is placed above the core housing cylinder 4. When projecting and igniting the wick 6 by an ignition device (not shown), the fuel in the oil tank 1 sucked up at the lower end of the wick 6 starts burning at the upper end of the wick 6, and the generated combustion flame and combustion gas are burner 5. Combustion is completed with the supply of air.

  Reference numeral 12 denotes a rotary plate constituted by a gear which is loosely fitted to the core vertical shaft 7b and rotates around the core vertical shaft 7b. Reference numeral 13 denotes a locking piece provided on the core vertical shaft 7b. Reference numeral 14 denotes a rotary plate. When the core up-and-down shaft 7b is rotated in the center-up direction, the locking piece 13 pushes the protrusion 14, so that the rotating plate 12 rotates together with the core up-and-down shaft 7b.

  Reference numeral 15 denotes a return spring attached between the wall of the core housing cylinder 4 and the rotary plate 12, and 16 denotes a stopper that engages with the rotary plate 12 at the center raising position. The rotary plate 12 is a return spring during the center raising operation. When the rotary plate 12 is engaged with the stopper 16 at the center-up position, the rotary plate 12 holds the rotational force in the core lowering direction by the return spring 15.

  Reference numeral 17 denotes a seismic device that moves the stopper 16 engaged with the rotating plate 12. When the seismic device 17 detects vibration, the stopper 16 is moved to disengage the rotating plate 12 and the stopper 16 from each other. The rotating plate 12 from which the stopper 16 has been removed is rotated in the core lowering direction by the force of the return spring 15, and the protrusion 14 presses the locking piece 13. And the core 6 rapidly descends into the core housing cylinder 4 to extinguish the fire.

  Further, the core vertical shaft 7b is provided so that the locking piece 13 can be rotated independently from the protrusion 14 in a state where the rotary plate 12 and the stopper 16 are engaged, and the core vertical shaft 7b can be operated by operating the core vertical shaft 7b. The height of the wick 6 can be arbitrarily changed. During combustion, the wick amount can be adjusted by changing the wick height between the maximum combustion position and the minimum combustion position. If the core 7b is rotated to the fire extinguishing position, the lead 6 is lowered into the lead containing cylinder 4 to extinguish the fire.

  At the time of emergency fire extinguishing when the seismic device 17 is operated, the core 6 rapidly descends into the core housing cylinder 4 and extinguishes in a short time, so that a large amount of unburned gas is released and a bad odor is generated. For this reason, the normal fire extinguishing core lowering position is set to a position higher than the emergency fire extinguishing core lowering position, and the normal fire extinguishing operation is performed by manually rotating the core vertical shaft 7b while slowly burning the unburned gas. The fire is extinguished without a bad odor.

  In addition, recently there is a safety device that detects an indoor abnormality and extinguishes the oil combustor, and 9 is an operation switch that opens and closes in conjunction with the core up / down operation and outputs an oil combustor operation / stop, Reference numeral 18 denotes a room temperature detecting means constituted by a temperature sensor or thermistor for detecting the temperature in the room where the oil combustor is used, and 19 is a solenoid arranged at the lower part of the movable end of the stopper 16. When the temperature rises to the combustion position, the operation switch 9 is closed, the room temperature detection means 18 is energized, and when the room temperature detection means 18 detects an abnormal temperature rise during combustion, an activation signal is sent to the solenoid 19 and the solenoid 19 moves the stopper 16. Therefore, the core 6 is lowered into the core housing cylinder 4 to extinguish the fire.

  In the above configuration, when the modified kerosene or kerosene mixed with water is used, the tar component contained in the kerosene cannot be combusted and tarred and remains at the tip of the core 6. Further, even if normal kerosene is used, if combustion is performed outside the adjustment range of the combustion amount, the flame at the tip of the wick 6 approaches the wick inner cylinder 2 and the wick inner cylinder 2 becomes high temperature, and the kerosene is vaporized. Is promoted to increase the amount of kerosene vaporized from the wick 6, but because the burner 5 has a smaller combustion amount than the amount of kerosene vaporized, kerosene vapor that cannot be burned by the burner 5 is condensed and returned to the wick 6. The fuel returned to 6 was tarned and remained at the tip of the core 6.

  If tar adheres to the wick 6, the tar attached to the wick 6 during normal fire extinguishing will continue to burn and the fire extinguishing time will be longer, which may exceed the specified fire extinguishing time. Further, when the amount of tar adhering to the tip of the core 6 increases, the gap between the core 6 and the core housing cylinder 4 becomes narrow and obstructs the core up-and-down operation, and the core 6 stops in the middle of lowering the core during fire extinguishing position. Could not be extinguished and could not be extinguished in an emergency, leading to a serious accident.

  The present invention solves the above-mentioned problem. Reference numeral 7a denotes an operating plate that is attached to the core vertical shaft 7b of the core vertical device 7 and rotates together with the core vertical shaft 7b. When the core 5 is raised to the combustion position by rotating 7b, the operation switch 9 is brought into contact with the operation switch 9 and the operation switch 9 is closed. During the combustion, the core vertical shaft 7b is rotated in the core lowering direction to perform the fire extinguishing operation. The operation switch 7 is separated from the operation switch 9 and the operation switch 7 is opened.

  8 is a temperature detecting means which is arranged in the inner space A of the core inner cylinder 2 to detect the temperature of the upper part of the core inner cylinder 2 and is composed of a thermistor, etc. 10 is operated upon receiving an operation stop signal from the operation switch 9 Timer means 20 is a judging means for inputting temperature data detected by the temperature detecting means 8, and when the operation switch 9 is opened by rotating the core vertical shaft 7b to the fire extinguishing position during combustion of the oil combustor. Upon receipt of this signal, the timer means 10 starts counting, and when the timer means 10 counts for a predetermined time, an activation signal is output to the judging means 20, and the judging means 20 inputs the signal of the temperature detecting means 8.

  A predetermined temperature serving as a determination reference is set in the determination unit 20, and the determination unit 20 performs a determination operation based on the set predetermined temperature and the temperature data of the temperature detection unit 8, and the temperature detection unit 8 is below the predetermined temperature. Is detected, the tar 6 does not adhere to the core 6 and it is determined that the fire is extinguished within a specified fire extinguishing time, and the determination operation is terminated and the operation of the oil combustor is stopped.

  11 is an alarm means constituted by an alarm buzzer, an alarm lamp or the like. When the temperature detection means 8 detects a predetermined temperature or more, it is determined that the fire extinguishing time has become longer due to tar adhering to the core 6, and the alarm means 11 is operated when the temperature detecting means 8 detects a predetermined temperature or higher, and the user can know the adhesion of tar to the core 6 by the operation of the alarm means 11.

  Even if tar adheres to the core 6, if the core 6 is baked when the amount of tar attached is small, the temperature at the tip of the core 6 becomes high and the tar burns to remove the tar adhered to the core 6. In the present invention, it is possible to inform the timing of emptying of the lead 6 before a large amount of tar adheres to the lead 6, so that the user performs the emptying of the lead 6 in response to the operation of the alarm means 11. As a result, troubles such as inability to extinguish fire and breakage of the core lifting device 7 can be prevented in advance.

  In addition, when the user continues to use the core 6 without baking it and the amount of tar attached increases or when the user makes an operation error, the core 6 stays inside the core housing cylinder 4 during fire extinguishing. In this case, the alarm means 11 is activated when a predetermined temperature or more is detected after a predetermined time has elapsed since the fire extinguishing operation, so that the user can notice abnormally and trouble that cannot be extinguished. Can be prevented.

  By the way, since the vicinity of the top plate of the core inner cylinder 2 becomes high temperature by the heat of the burner 5, if the temperature detecting means 8 is made higher than the above range, the temperature detecting means 8 having a high heat resistance temperature is required. Is expensive and causes an increase in cost. On the other hand, the lower part of the core inner cylinder 2 is less susceptible to the heat of the burner 5, but the core 6 in contact with the core inner cylinder 2 sucks the fuel at a low temperature. Even when a flame remains in 6, the temperature remains low in the lower part of the core inner cylinder 2, and an accurate temperature may not be detected.

  In the embodiment of the present invention, the temperature detection means 8 is disposed at a position lower than the normal fire extinguishing core lowering position and higher than the emergency fire extinguishing core lowering position. It is arranged so that it is located between the core lowering position for emergency fire extinguishing and the core lowering position for normal fire extinguishing.

  By specifying the mounting position of the temperature detecting means 8 in this way, the temperature detecting means 8 is not directly heated by the heat of the burner 5, and the draft of the burner 5 is placed in the internal space A of the core inner cylinder 2. Ascending air current forms an air flow upward from the lower part of the core inner cylinder 2, and this air flow suppresses the temperature rise of the temperature detecting means 8, so that the temperature detecting means 8 having a low heat-resistant temperature can be used. Thus, the temperature detecting means 8 can be shared with the room temperature detecting means 18 which is inexpensive and has a low heat-resistant temperature, and the price of the stove can be suppressed.

  Further, when the fire is extinguished, it is not affected by the low-temperature fuel sucked up by the wick 6, and when the temperature of the upper portion of the wick inner cylinder 2 rises due to the flame remaining in the tar-attached portion of the wick 6, the temperature is surely increased. The change can be detected, and the adhesion of tar on the core 6 can be reliably detected.

  Further, the amount of tar remaining attached to the core 6 varies depending on the position where it adheres, and a flame remains in the portion where the tar is attached, but no flame remains in a portion where the tar is not attached, The temperature difference of the inner wall surface of the core inner cylinder 2 is caused between the portion where the flame remains and the portion where the flame does not exist. In the present invention, the temperature detecting means 8 is arranged at the center position of the inner space A of the core inner cylinder 2 to detect the ambient temperature of the inner space A of the core inner cylinder 2. Since the ambient temperature in the space A changes regardless of the position of the flame remaining at the tip of the lead 6, the temperature detecting means 8 can accurately detect the temperature and can reliably detect the adhesion of tar on the lead 6.

  Further, in another embodiment of the present invention, the operation plate 7a provided on the core vertical shaft 7b is closed between the maximum combustion position and the minimum combustion position, and the operation switch 9 is closed, and the minimum combustion position and the fire extinguishing position are set. When the core height is changed for use at the minimum combustion position during combustion, if the core 6 is lowered too much and falls outside the adjustment range of the combustion amount, the operation plate 7a Since the operation switch 9 is separated, the timer unit 11 starts counting, and after a predetermined time has elapsed, the determination unit 18 operates to input the temperature detected by the temperature detection unit 8. Therefore, the alarm means 11 is activated when a predetermined temperature or higher is detected.

  Therefore, since the user notices that the lead 6 is lowered too much and returns the lead 6 to the combustion position, the user does not continue to use it in a state outside the adjustment range of the combustion amount. Generation of tar and adhesion of tar to the core 6 can be prevented.

It is a sectional side view of the oil combustor which shows the Example of this invention. It is a front view of the principal part of the oil combustor which shows the Example of this invention. It is a block diagram which shows the structure of the safety device of the oil combustor which shows the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Oil tank 2 core inner cylinder 3 core outer cylinder 4 core accommodating cylinder 5 burner 6 core 7 core lifting / lowering apparatus 7a Actuation plate 8 Temperature detection means 9 Operation switch 10 Timer means 11 Alarm means

Claims (4)

A core inner cylinder 2 erected from the bottom plate of the oil tank 1 and a core outer cylinder 3 attached to the upper surface plate of the oil tank 1;
An oil combustor burner 5 is disposed on a core housing cylinder 4 constituted by the core inner cylinder 2 and the core outer cylinder 3;
A core 6 is attached to the gap of the core accommodating cylinder 4 so as to be movable up and down.
In an oil combustor provided with a core lifting device 7 for moving the core 6 up and down,
Temperature detecting means 8 for detecting the temperature of the upper part of the core inner cylinder 2;
An operation switch 9 that opens and closes by a core up and down operation of the core lifting device 7 and outputs an operation / stop of the oil combustor;
Timer means 10 for measuring a predetermined time,
The timer means 10 receives the operation stop signal of the operation switch 9 during the fire extinguishing operation, and starts counting,
After the elapse of a predetermined time, the temperature detecting means 8 detects the temperature of the upper portion of the core inner cylinder 2,
An oil combustor safety device, wherein the alarm means 11 is actuated when the temperature detection means 8 detects a predetermined temperature or more. The oil combustor sets the emergency fire core lowering position lower than the normal fire extinguishing core lowering position,
The temperature detecting means (8) is attached to the inner space (A) of the core inner cylinder (2) and is disposed at a position lower than the normal fire extinguishing core lowering position and higher than the emergency fire extinguishing core lowering position. Oil burner safety device.   The oil temperature combustor safety device according to claim 1, wherein the temperature detecting means (8) is arranged at a central position of the internal space (A) of the core inner cylinder (2). An operating plate 7a for driving the operation switch 9 is attached to the core lifting device 7,
The operation plate 7a closes the operation switch 9 between the maximum combustion position and the minimum combustion position,
2. The oil combustor safety device according to claim 1, wherein an open circuit is provided between the minimum combustion position and the fire extinguishing position.

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