JP4670394B2 - Oil burner control device - Google Patents

Description

  The present invention relates to a control device for a core up-down type oil combustor for early detection of tar adhering to the core due to the use or progress of use of defective kerosene.

  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 rotated 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 looked into the lower part of the combustion cylinder. 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. Further, when the core vertical axis is rotated in the core lowering direction during combustion and the core is lowered to the fire extinguishing position, the tip of the core moves into the core accommodating cylinder to extinguish the fire.
Japanese Utility Model Publication No. 6-31317

  If the kerosene used in the oil combustor is normal kerosene, no vaporization failure will occur, and the entire amount of kerosene sucked up by the core will vaporize and burn, but the kerosene used will be defective kerosene The high molecular weight component contained in kerosene is tarized at the upper end of the core and remains attached to the core. Even when normal kerosene is used, tar adheres when the oil combustor is used for a long period of time. If tar adheres to the core, the odor becomes stronger during combustion or poor ignition. It may cause poor fire extinguishing.

  When defective kerosene is used in a new oil combustor and the above-mentioned symptoms occur, it is often judged as a failure and processed as an instrument claim. And even if the suspicion of defective kerosene is pointed out, if the kerosene already in use has been replaced with a new one, it can not be confirmed, leaving both the user and the manufacturer untrustworthy There were often things.

  Even if bad kerosene is used or if the oil combustor has been used for a long period of time, tar burning on the core can be removed if the core is baked at an early stage. If you continue to use without carrying out, the amount of tar adhesion will increase and you will notice only when a problem occurs, at this time the tar can not be removed even if the core is baked, The current situation is that the life of the core and the product has been shortened.

  The present invention solves the above-described problem, and includes a core inner cylinder 2 standing 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 core 5 is attached to a gap of a core housing cylinder 4 constituted by the outer cylinder 3 so as to be movable up and down, a core lifting device 6 for moving the core 5 up and down is provided, and the core 5 exposed to the top of the core housing cylinder 4 is provided. The ignition means 7 is provided at a position corresponding to the side surface, and the lead 5 is exposed to the upper part of the lead receiving cylinder 4 by the lead raising operation of the lead lifting and lowering device 6. In the oil combustor, the temperature detection means A for detecting the temperature of the core outer cylinder 3 in the vicinity of the ignition position of the core 5 and the temperature detection for detecting the temperature of the core outer cylinder 3 on the side opposite to the ignition position of the core 5. Means B, timer means 8 for starting counting at the time of ignition operation for energizing the ignition means 7, and timer Comparing means 9 that operates after a predetermined time is provided by the means 8, and the comparing means 9 compares the temperatures of the temperature detecting means A and the temperature detecting means B, and the temperature difference between the temperature detecting means A and the temperature detecting means B is predetermined. The alarm means 10 is actuated when the temperature goes out.

  Also, a core housing cylinder comprising 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, and comprising the core inner cylinder 2 and the core outer cylinder 3. The core 5 is attached to the gap 4 so as to be movable up and down, a core lifting device 6 is provided for moving the core 5 up and down, and the ignition means 7 is disposed at a position corresponding to the side surface of the core 5 exposed at the upper part of the core housing cylinder 4. In the oil combustor in which the core 5 is exposed to the upper portion of the core housing cylinder 4 by the core lifting operation of the core lifting device 6, the ignition means 7 is energized to ignite the core 5 and start combustion. The temperature detecting means A for detecting the temperature of the core outer cylinder 3 in the vicinity of the ignition position and the temperature detecting means B for detecting the temperature of the core outer cylinder 3 on the side opposite to the ignition position of the core 5 are provided, and the ignition means Reference temperature setting means for determining a reference temperature T based on the temperature of the temperature detection means A and B at the time of ignition operation for energizing 7 1, timer means 8 that starts counting when the temperature detection means A detects the reference temperature T determined by the reference temperature setting means 11, and determination means 12 that operates after a predetermined time by the timer means 8, The determination means 12 is characterized in that the alarm means 10 is activated when the temperature detection means B detects the reference temperature T or less determined by the reference temperature setting means.

  The reference temperature set by the reference temperature setting means 11 is a value obtained by adding a predetermined additional temperature to the initial temperature detected by the temperature detecting means A and B at the time of ignition. Since the core housing cylinder 4 becomes stable when the temperature rises from the temperature at the time of ignition to a certain temperature, the determination operation can be performed without malfunction.

  Further, since the alarm means 10 is configured to continue the operation even after the determination operation, even if the alarm means 10 is not noticed when the alarm means 10 is activated, the alarm 5 that is activated after that requires the core 5 to be baked. It is possible to inform the handler.

  When the lead 5 is exposed to the upper part of the lead receiving cylinder 4 by the lead lifting device 6 and the ignition means 7 is energized to ignite the lead 5, the flame spreads from the ignition position to both sides and spreads to the whole lead 5. Yes, at this time, the temperature in the vicinity of the ignition means 7 where the flame is first formed in the core housing cylinder 4 rises first, and the temperature of the core housing cylinder 4 on the opposite side of the ignition means 7 rises as the combustion flame spreads However, if tar adheres to the tip of the wick 5, the tar-attached portion cannot be ignited and hinders the spread of the flame. Therefore, the temperature rise of the wick accommodating cylinder 4 on the side opposite to the ignition means 7 is delayed. .

  The present invention includes a temperature detection means A for detecting the temperature of the lead housing cylinder 4 near the ignition position of the lead 5, and a temperature detection means B for detecting the temperature of the lead receiving cylinder 4 on the side opposite to the ignition position of the lead 5. The temperature of the temperature detection means A and the temperature detection means B is compared after a predetermined time from ignition, and the temperature rise of the core housing cylinder 4 when the core 5 is normal and when tar adheres to the core 5 It became possible to detect the adhesion of tar on the core 5 due to the difference in the change.

  And when the difference of the compared temperature deviates from the predetermined temperature, the alarm means 10 is activated to inform the user that the baking is necessary, so that the operator periodically performs the baking. Since the tar can be removed before the amount of tar attached increases, the core 5 can be used in a good condition for a long period of time, and the oil combustor becomes unusable even when defective kerosene is used. It became the thing which can respond before.

  Further, when the alarm means 10 is operated with a new oil combustor, or when the alarm means 10 is activated in a short period of time even if the core 5 is baked, it is understood that the oil used is defective kerosene. The user can be convinced that the cause is not an instrument, and the oil combustor can be used continuously by changing the oil.

  In another configuration, the reference temperature T is determined from the detected temperatures of the temperature detection means A and B at the time of ignition, and when the temperature detection means A detects the reference temperature T, the timer means 8 starts counting, for a predetermined time. After that, it is confirmed whether the temperature detection means B has reached the reference temperature T, and the alarm means 10 is activated when the reference temperature T has not been reached. The reference temperature varies depending on the temperature of the lead tube 4 at the time of ignition. Therefore, the determination operation can be performed after the temperature of the lead tube 4 becomes stable regardless of the temperature at the time of ignition, and the adhesion of tar on the lead 5 can be accurately detected without causing a malfunction. It became.

  Further, when tar is detected by the judgment operation, only the alarm means 10 continues to operate even after the judgment operation is completed, so that the operator can be surely informed that the time for empty baking has come. became.

  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 5 denotes a core mounted in a gap between the core housing cylinder 4, and the fuel in the oil tank 1 is sucked up by the lower end of the core 5. And supplied to the upper end of the lead 5.

  6 is a core lifting device attached to the core housing cylinder 4, 6a is a core vertical shaft constituting the core lifting device 6 inserted from the outside of the core housing cylinder 4, and 6b is an outer end of the core vertical shaft 6a. The core up / down knob is attached. When the core up / down axis 6a is rotated by operating the core up / down knob 6b, the core 5 moves up and down in the gap of the core housing cylinder 4.

  7 is an ignition means composed of an ignition heater or the like provided at a position corresponding to the exposed side surface of the core 5, 7 a is an ignition switch for energizing the ignition means 7, and 13 is an inner cylinder 2 and a core. It is a combustion cylinder arranged at the upper part of the outer cylinder 3, the core vertical shaft 6 a is rotated in the center raising direction so that the upper end of the core 5 protrudes from the upper part of the core housing cylinder 4, and the ignition switch 7 a is operated to ignite means 7 is energized to ignite the wick 5, the fuel in the oil tank 1 sucked up at the lower end of the wick 5 starts to combust at the upper end of the wick 5. Receives supply to complete combustion.

  In the above configuration, if the oil to be used is a modified kerosene, the tar component contained in the kerosene cannot be combusted and is tarred and remains at the tip of the core 5. Even if normal kerosene is used, kerosene vapor evaporated from the wick 5 may not be combusted in the combustion cylinder 13 and may be condensed and returned to the wick 5. Once kerosene vaporized and condensed, the kerosene is denatured. Therefore, it was tarned and remained attached to the core 5 during repeated combustion and extinguishing.

  At the time of ignition, a small flame ignited at the tip of the lead 5 by the ignition means 7 spreads from the ignition position to both sides and spreads all around the lead 5, and ascending airflow is generated as the temperature of the combustion cylinder 13 rises to increase the flame. However, if tar adheres to the tip of the wick 5, the tar inhibits the vaporization of kerosene from the wick 5, slows the spread of the flame, and increases the time until the temperature of the combustion cylinder 13 rises. While the temperature of the combustion cylinder 13 is low, kerosene vaporized from the core 5 cannot be combusted and is discharged through the combustion cylinder 13 into the room, which causes odor generation.

  On the other hand, when the fire extinguishes, the tar adhering to the wick 5 continues to burn, the temperature of the wick accommodating cylinder 4 does not drop, the fire extinguishing time becomes long, and it may become impossible to extinguish the fire within the specified fire extinguishing time. Further, when the amount of tar adhering to the tip of the core 5 increases, the gap between the core 5 and the core housing cylinder 4 becomes narrow and obstructs the core up / down operation, and the core 5 stops in the middle of the core lowering when the fire is extinguished. There was a risk that it could not be extinguished and could not be extinguished.

  Even if tar adheres to the wick 5, as long as the amount of tar attached is small, the wick 5 is baked so that the tip of the wick 5 becomes hot and the tar burns. Although the tar attached to the core 5 can be removed by performing the above, the general operator does not know the timing for performing the baking, so the use of the core 5 is continued without performing the baking. In most cases, it is noticed only after it becomes impossible. In this case, a large amount of tar has already adhered to the core 5, and even if the core 5 is baked, the tar cannot be removed. Exchange is necessary.

  The present invention solves this problem, and A and B are temperature detecting means for detecting the temperature of the core housing cylinder 4, and the temperature detecting means A and B of the embodiment are formed outside the core outer cylinder 3. It is attached to the lower surface of the receiving part of the combustion cylinder 13, and the temperature detection means A and B detect the temperature of the core outer cylinder 3. The temperature detection means A is located near the ignition position of the core 5 ignited by the ignition means 7. On the other hand, the temperature detection means B is arranged so as to be located on the side opposite to the ignition position of the core 5.

  When the lead 5 is ignited, the flame at the tip of the lead 5 spreads from the ignition position to both sides, the flame is connected on the opposite side to the ignition position and spreads all around the lead 5, and the temperature detection means A is used at the time of ignition. First, the temperature at the position where the temperature rise starts is detected, while the temperature detection means B detects the temperature at the position where the temperature rise starts most late from the ignition position.

  Reference numeral 8 denotes timer means for starting counting in conjunction with the operation of the ignition switch 7a for energizing the ignition means 7. The timer means 8 energizes the ignition means 7 by closing the ignition switch 7a and ignites the core 5. Thereafter, the counting is started when the ignition operation is stopped and the ignition switch 7a is opened.

  Reference numeral 9 is a comparison means that operates after a predetermined time by the timer means 8, 10 is an alarm means constituted by a buzzer, a lamp, etc., and the comparison means 9 inputs the temperature detected by the temperature detection means A and B after a predetermined time from the ignition operation. Then, the detected temperature of the temperature detecting means A and the detected temperature of the temperature detecting means B are compared, and the alarm means 10 is activated when the temperature difference between the temperature detecting means A and the temperature detecting means B deviates from a predetermined temperature.

  When the lead 5 is ignited, the temperature of the temperature detecting means A starts to rise, and when the flame spreads around the entire circumference of the lead 5, the temperature of the temperature detecting means B starts to rise, and the temperature detecting means A and the temperature detecting means B are Rise while maintaining a certain temperature difference. When the lead 5 is in a normal state, the flame spreads all around the lead 5 in a short time, so the temperature difference between the temperature detecting means A and the temperature detecting means B is very small. On the other hand, when tar adheres to the core 5 and it is necessary to bake it, the time until the flame spreads around the entire circumference of the core 5 becomes long, and the temperature rise of the temperature detecting means B starts. The temperature difference between the temperature detection means A and B at this time is more than twice that of when the core 5 is in a normal state [see FIG. 3 (a)].

  Therefore, when the lead 5 is in a normal state, the temperature difference between the temperature detection means A and the temperature detection means B remains small even after a predetermined time, and the temperature difference between the temperature detection means A and B is within a predetermined range. Therefore, at this time, since there is no need for empty baking, the determination operation of the comparison means 9 is terminated.

  On the other hand, when tar adheres to the core 5, the temperature difference between the temperature detection means A and the temperature detection means B after a predetermined time also increases, and the temperature difference between the temperature detection means A and B is out of the predetermined range. The alarm means 10 is operated to inform the handler that the core 5 needs to be baked.

  In another embodiment of the present invention, reference numeral 11 denotes reference temperature setting means that operates when the ignition switch 7a energizing the ignition means 7 is operated. The reference temperature setting means 11 includes the temperature detection means A at the start of combustion. A detected temperature of the temperature detecting means B is input, and a value obtained by adding a predetermined additional temperature to this temperature is determined as a reference temperature.

  Reference numeral 8 denotes timer means for starting counting when the temperature detection means A detects the reference temperature determined by the reference temperature setting means 11, and reference numeral 12 denotes determination means that operates after a predetermined time by the timer means 8. The detection temperature of the temperature detection means B after a predetermined time from the detection of the reference temperature by the means A is input, and whether the temperature of the temperature detection means B reaches the reference temperature determined by the reference temperature setting means 11 at the start of combustion. The alarm means 10 is activated when the temperature detection means B does not reach the reference temperature.

  When the lead 5 is in a normal state, the flame spreads all around the lead 5 in a short time after ignition. Therefore, the temperature of the temperature detection means B starts to rise immediately after the temperature of the temperature detection means A starts to rise. On the other hand, when tar adheres to the core 5 and it becomes necessary to bake, the time until the flame spreads all around the core 5 becomes longer, and the temperature of the temperature detection means A starts to rise. The time until the temperature of the temperature detecting means B starts to increase is also increased. [Refer FIG.3 (b)].

  Therefore, when the wick 5 is burning in a normal state, there is almost no time difference from when the temperature detecting means A detects the reference temperature until the temperature detecting means B detects the reference temperature. After detecting the reference temperature, the temperature detecting means B after a predetermined time detects the reference temperature or more, and at this time, it is determined that there is no need for baking, and the determination operation is terminated.

  On the other hand, when tar adheres to the core 5, the time from when the temperature detecting means A detects the reference temperature to when the temperature detecting means B detects the reference temperature also becomes longer. The temperature detecting means B after a predetermined time after detecting the temperature detects the temperature below the reference temperature, and activates the alarm means 10 to notify the operator that the core 5 needs to be baked.

  Further, the temperature of the core outer cylinder 3 is stabilized when the temperature rises from the temperature at the time of ignition by a certain temperature. However, the time until the temperature of the core outer cylinder 3 is stabilized varies depending on the temperature at the time of ignition. If the temperature and time are set in advance, the judgment operation may be performed in a state where the temperature rise of the core outer cylinder 3 is not stable. In order to prevent malfunction, the judgment operation causes the temperature rise of the core outer cylinder 3 as much as possible. I want to do it in a stable state.

  In this invention, a value obtained by adding a predetermined additional temperature to the temperature at the time of ignition is set as a reference temperature, and the temperature of the core housing cylinder 4 is stable when the temperature rises regardless of the temperature at the time of ignition. Therefore, when the temperature detection means A detects the reference temperature and performs the determination operation, the temperature rises constantly from the temperature at the time of ignition regardless of the temperature at the time of ignition, and the temperature rise becomes stable. Therefore, the tar of the lead 5 can be detected without causing malfunction.

  In this way, by detecting the adhesion of tar on the core 5 and operating the alarm means 10, the operator is informed that the core 5 needs to be baked, so that the operator can detect the core 5 at an early stage. By performing baking, the tar can be removed before a large amount of tar adheres to the core 5, and the core 5 will not be unusable in a short period of time and can be used in a good condition for a long period of time. It was.

  Also, even if the core 5 is burned by receiving the alarm means 10, if the alarm means 10 is frequently activated in a short period of time, it can be seen that the oil used is defective kerosene. The oil combustor can be used continuously by replacement, and the cause of the trouble is not the appliance.

  Further, in the embodiment of the present invention, when the alarm means 10 is activated, it is possible for the operator to notice the operation of the alarm means 10 after the ignition operation if the alarm is continued to be generated by the light of the display lamp or the like even after the judgment operation is completed. Even when there is not, it is noticed that the alarm means 10 is operating during combustion or extinguishing the fire, and it is possible to reliably notify the timing of the core 5 being baked.

  In addition, the amount of heat generation and the shape of the core housing cylinder 4 and the combustion cylinder 13 are different for each type of oil combustor, and the time during which the flame spreads around the core 5 and the temperature rise time of the core housing cylinder 4 vary. However, in the present invention, it is possible to easily cope with different models by changing the time and temperature at which the determination operation is performed and the temperature at which the alarm means 10 is operated.

It is a block diagram which shows the structure of the oil combustor which shows the Example of this invention. It is a block diagram which shows the structure of the oil combustor which shows the other Example of this invention. It is explanatory drawing which shows the temperature change after ignition of this invention. It is a sectional side view of the oil combustor which shows the Example of this invention. It is a cross-sectional view by the XX cut surface of the Example of FIG. 4 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Oil tank 2 core inner cylinder 3 core outer cylinder 4 core accommodation cylinder 5 core 6 core lifting / lowering apparatus 7 ignition device 8 timer means 9 comparison means 10 alarm means 11 reference temperature setting means 12 determination means A temperature detection means B temperature detection means

Claims (4)

An inner core cylinder 2 erected from the bottom plate of the oil tank 1 and an outer core cylinder 3 attached to the upper surface plate of the oil tank 1 are provided, and an inner core cylinder 4 composed of the inner core cylinder 2 and the outer core cylinder 3 is provided. A core 5 is attached to the gap so as to be movable up and down, a core lifting device 6 is provided for moving the core 5 up and down, and an ignition means 7 is provided at a position corresponding to the side surface of the core 5 exposed at the upper part of the core housing cylinder 4.
In the oil combustor in which the core 5 is exposed to the upper part of the core housing cylinder 4 by the core raising operation of the core lifting device 6 and the ignition means 7 is energized to ignite the core 5 and start combustion.
A temperature detecting means A for detecting the temperature of the core outer cylinder 3 in the vicinity of the ignition position of the core 5 and a temperature detecting means B for detecting the temperature of the core outer cylinder 3 opposite to the ignition position of the core 5 are provided. ,
Timer means 8 for starting counting at the time of ignition operation for energizing the ignition means 7, and comparison means 9 that operates after a predetermined time by the timer means 8,
The comparison means 9 compares the temperatures of the temperature detection means A and the temperature detection means B, and operates the alarm means 10 when the temperature difference between the temperature detection means A and the temperature detection means B deviates from a predetermined temperature. Oil combustor control device. An inner core cylinder 2 erected from the bottom plate of the oil tank 1 and an outer core cylinder 3 attached to the upper surface plate of the oil tank 1 are provided, and an inner core cylinder 4 composed of the inner core cylinder 2 and the outer core cylinder 3 is provided. A core 5 is attached to the gap so as to be movable up and down, a core lifting device 6 is provided for moving the core 5 up and down, and an ignition means 7 is provided at a position corresponding to the side surface of the core 5 exposed at the upper part of the core housing cylinder 4.
In the oil combustor in which the core 5 is exposed to the upper part of the core housing cylinder 4 by the core raising operation of the core lifting device 6 and the ignition means 7 is energized to ignite the core 5 and start combustion.
A temperature detecting means A for detecting the temperature of the core outer cylinder 3 in the vicinity of the ignition position of the core 5 and a temperature detecting means B for detecting the temperature of the core outer cylinder 3 opposite to the ignition position of the core 5 are provided. ,
The reference temperature setting means 11 for determining a reference temperature based on the temperature of the temperature detection means A and B at the time of ignition operation for energizing the ignition means 7, and the temperature detection means A detects the reference temperature determined by the reference temperature setting means 11 Timer means 8 that starts counting when the timer is operated, and determination means 12 that operates after a predetermined time by the timer means 8 are provided. The determination means 12 is equal to or lower than the reference temperature set by the reference temperature setting means 11 by the temperature detection means B. A control device for an oil combustor, wherein the alarm means 10 is actuated when an oil is detected.   The control apparatus for an oil combustor according to claim 2, wherein the reference temperature determined by the reference temperature setting means 11 is a value obtained by adding a predetermined additional temperature to the initial temperature detected by the temperature detecting means A and B at the time of ignition. The control device for an oil combustor according to claim 1 or 2, wherein the alarm means (10) continues to operate even after the determination operation.

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