JP2006153388A - Safety device for oil burning appliance - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure capable of surely operating a safety device even when a dry battery is weak in a burning appliance applying the dry battery as its main power source and comprising an igniter and the safety device of different driving voltages. <P>SOLUTION: The burning appliance 1 applying the dry battery 2 as its power source comprises the igniter 3 of low driving voltage and the safety device A of high driving voltage composed of an abnormality detecting means 4 and an extinguishing mechanism 5, and the extinguishing mechanism 5 is operated to extinguish the fire when the abnormality detecting means 4 detects an abnormal state in a room during the burning of the burning appliance 1. The burning appliance 1 comprises the dry battery 2 as the power source for driving the safety device A of high driving voltage, and the safety device A is constituted to be directly driven by power source voltage of the dry battery 2. Further a resistor 8 connected with the igniter 3 in series, is mounted on a circuit of the igniter 3 energized by an ignition switch 7, and the power source voltage of the dry battery 2 is divided by internal resistance in energizing the igniter 3 and the resistor 8 to output the low driving voltage for the igniter 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a structure for reliably operating a safety device in a combustor using a dry battery as a main power source.

  An oil combustor that raises and lowers the combustion core and ignites and extinguishes the fuel. When the combustion core is raised and ignited by the igniter, the fuel sucked up by the combustion core starts to burn, and the user manually burns during combustion. The fire is extinguished by lowering the height of the lead. It also has an anti-earthquake automatic fire extinguishing device that detects vibrations such as earthquakes with a vibrator and automatically lowers the combustion core to extinguish the fire.

Recently, an abnormality detection means composed of a temperature sensor for detecting the temperature of the room, a sensor for detecting the concentration of CO and CO2, and a fire extinguishing mechanism composed of an electric motor, a solenoid, and the like are installed, and the combustion state of the combustor A safety device that monitors the state of the vehicle and the room with the abnormality detection means, and that the fire extinguishing mechanism activates the automatic fire extinguishing device when the abnormality detection means detects abnormal combustion of the combustor or deterioration of the indoor state to extinguish the combustor. (See Patent Document 1).
Japanese Utility Model Publication No. 2-3999.

  There are two types of igniters: a red-hot ignition heater using filaments and an ignition device that discharges discharge sparks using discharge electrodes. Since the ignition device has different driving voltages, different battery power sources are used depending on the model.

  The safety device attached to the oil combustor is also powered by the same dry battery, but the power supply voltage of the dry battery is set according to the model of the igniter, and the drive voltage of the safety device is the drive of the discharge ignition device. Since it is almost the same as the voltage, the dry battery power source suitable for the discharge type ignition device can be supplied to the safety device as it is, but when the dry cell power source is set according to the ignition heater that uses the filament, the safety device is driven. In addition, it is necessary to add a booster circuit to the safety device and raise the power supply voltage supplied from the dry battery to the driving voltage of the safety device.

  A red-hot ignition heater can be made cheaper than a discharge-type ignition device. However, a safety device equipped with a booster circuit tends to become unstable when the battery is exhausted. If the operation becomes unstable and an abnormality occurs during combustion of the combustor, there is a possibility that the safety device does not operate and a trouble occurs. In order to prevent this trouble, a strong booster circuit that can obtain a stable voltage even when the dry battery is exhausted is necessary. However, since such a booster circuit is expensive, select an inexpensive ignition heater. The merit to do is lost.

  Even if the combustor is equipped with the same safety device, the structure of the type and number of dry cells used and the presence or absence of the booster circuit of the safety device differ depending on the type of igniter provided in the combustor. Corresponding dedicated parts are required, resulting in poor production efficiency and cost issues.

  The present invention solves the above-mentioned problem. The combustor 1 is provided with an igniter 3 using a dry battery 2 as a power source, and an abnormality detection means 4 for detecting the state of the room where the combustor 1 is installed; After providing a safety device A composed of a fire extinguishing mechanism 5 that operates according to the output signal of the abnormality detecting means 4, and starting the operation of the abnormality detecting means 4 with the operation switch 6a closed during the center raising operation by the core lifting device 6, When the ignition switch 7 is closed, the igniter 3 is energized to start combustion, and the fire extinguishing mechanism 5 is activated when the abnormality detection means 4 detects an abnormal state in the room during the combustion of the combustor 1. In the combustor that extinguishes fire, the igniter 3 and the safety device A have different drive voltages, the igniter 3 has a low drive voltage, and the safety device A has a high drive voltage. Driving voltage that enables driving A resistor 8 connected in series with the igniter 3 is provided in the circuit of the igniter 3 that includes the dry battery 2 of a high power source and is energized by the ignition switch 7, and the internal resistance and the resistor 8 when the igniter 3 is energized. The power supply voltage of the dry battery 2 is divided to output a low drive voltage of the igniter 3, and the low drive voltage igniter 3 and the high drive voltage safety device A can be used by the same dry battery 2. It is characterized by.

  In addition, the resistance value of the resistor 8 is set larger than the internal resistance value when the igniter 3 is energized, and the power supply voltage is divided when the igniter 3 is energized so that the output voltage of the igniter 3 is lowered. When the dry battery 2 is exhausted, the output voltage of the igniter 3 can be lowered before the safety device A, and the drive voltage of the safety device A can be secured while the igniter 3 can be driven. When an abnormality occurs, the safety device A operates reliably.

  Further, if the safety device A is provided with voltage detection means 9 for detecting the voltage of the dry battery 2, and the fire detection mechanism 5 is operated to extinguish the fire when the voltage detection means 9 detects the low voltage V, the dry battery Before the fire extinguishing mechanism 5 becomes inoperable due to the consumption of 2, the combustor 1 can be made unusable.

  When the voltage detecting means 9 is provided, the resistance value of the resistor 8 is set smaller than the internal resistance value when the igniter 3 is energized, and the power supply voltage is divided when the igniter 3 is energized to divide the igniter 3. By increasing the output voltage, it is possible to suppress a decrease in the output voltage of the igniter 3 when the dry battery 2 is consumed, and good ignition is maintained until the voltage detection means 8 detects the low voltage V. It will be possible.

  This invention which solves the above-mentioned subject, when the drive voltage of the igniter 3 provided in the combustor 1 and the drive voltage of the safety device A are different, the drive voltage of the igniter 3 is low, and the drive voltage of the safety device A is high, The power supply voltage of the dry battery 2 is set in accordance with the safety device A having a high driving voltage, and the resistor 8 connected in series with the igniter 3 is provided in the circuit of the igniter 3 having a low driving voltage, and the ignition switch 7 is closed. At the time of ignition operation, the power source voltage from the dry battery 2 is divided by the internal resistance of the igniter 3 and the resistor 8 so as to output a low driving voltage of the igniter 3, so that the igniter 3 having a low driving voltage is driven. It is possible to combine the safety device A with a high voltage, and it becomes unnecessary to boost the voltage with a booster circuit from a low drive voltage, and the safety device A can operate reliably even when there is a voltage drop due to the consumption of the dry battery 2, It has increased the reliability of the whole system.

  In the present invention, even if the model of the igniter 3 to be used is changed, the same dry battery power source circuit is used. When the igniter 3 is an ignition heater having a low driving voltage, the pressure is divided by the resistor 8, while the ignition When the vessel 3 is a discharge type ignition device with a high driving voltage, it can be used by deleting the resistor 8 and short-circuiting the circuit, so that the parts of the dry battery 2 and the safety device A can be shared. The production efficiency has been improved and the cost can be reduced.

  Although the operation of the igniter 3 and the safety device A becomes unstable as the dry battery 2 is consumed, in the present invention, the resistance value of the resistor 8 is set larger than the internal resistance value when the igniter 3 is energized, and the ignition is performed. Since the output voltage of the igniter 3 is set to be low, the output voltage of the igniter 3 obtained by the partial pressure is likely to decrease when the dry battery 2 is consumed and the power supply voltage is reduced. Since the drive voltage of the igniter 3 cannot be obtained, the safety device A can be reliably operated while the igniter 3 can be operated, and the combustor 1 cannot be used before the safety device A becomes inoperable. Since the battery is replaced with a new battery 2, the trouble that the safety device A does not operate is not generated.

  In addition, the safety device A is provided with voltage detection means 9 for detecting the power supply voltage of the dry battery 2, and the fire extinguishing mechanism 5 is activated to extinguish the fire when the voltage of the dry battery 2 decreases and the voltage detection means 9 detects the low voltage V. When the configuration is adopted, the battery 2 is replaced before the fire extinguishing mechanism 5 becomes inoperable because the voltage of the battery 2 is lowered, and the battery 2 is replaced. It became impossible to improve safety.

  Further, when the voltage detection means 9 of the dry battery 2 is provided, the resistance value of the resistor 8 is made smaller than the internal resistance value when the igniter 3 is energized and the output voltage of the igniter 3 is set to be higher. Since the voltage drop when the dry battery 2 is consumed can be suppressed, even when the voltage drops due to the dry battery 2 being consumed, good ignition performance can be maintained until the voltage detecting means 9 detects the low voltage V. As a result, the reliability and usability of the safety device A can be improved.

  The present invention will be described with reference to the embodiments shown in the drawings. Reference numeral 1 denotes a combustor constituting a core up-down burner, 6 denotes a core lifting device that moves a combustion core (not shown) up and down, and 7 denotes a center raising operation by the core lifting device 6. An ignition switch that is manually operated, 3 is an igniter configured by an ignition heater or the like approaching the core raised by the core lifting device 6, and 2 is a dry battery that constitutes a power source of the combustor 1. When it rises to the combustion position and the ignition switch 7 is closed, the igniter 3 is energized, and the igniter 3 ignites the combustion core and the combustor 1 starts combustion.

  Reference numeral 10 denotes an automatic fire extinguishing device attached to the core lifting device 6 of the combustor 1, 10a denotes a seismic weight constituting the automatic fire extinguishing device 10, and 10b denotes an operating portion that engages with the core lifting device 6 at the combustion position. If the seismic weight 10a is detected and falls when strong vibration is applied to 1, the operation unit 10b and the core lifting device 6 are disengaged, and the core lifting device 6 forcibly moves the combustion core to the fire extinguishing position. To extinguish the combustor 1.

  4 is an abnormality detection means for detecting the combustion state of the combustor 1, 5 is a fire extinguishing mechanism that is actuated by an output signal of the abnormality detection means 4, A is a safety device composed of the abnormality detection means 4 and the fire extinguishing mechanism 5, This is an operation switch that operates in conjunction with the center raising operation by the core lifting device 6. When the combustion core is raised to the combustion position by the core lifting device 6, the operation switch 6 a is closed and energization to the abnormality detection means 4 is started. . When the abnormality detection means 4 detects abnormal combustion of the combustor 1 or deterioration of the indoor state during combustion in the combustor 1, the fire extinguishing mechanism 5 is energized, and the fire extinguishing mechanism 5 operates the automatic fire extinguishing device 10 to perform combustion. Fire extinguisher 1

  When the combustor 1 causes abnormal combustion or when the indoor state deteriorates, the abnormal temperature rise or CO / CO2 concentration in the room in which the combustor 1 is used is abnormally increased. It consists of a thermistor that detects room temperature and a sensor that detects CO, CO2, and the like. Further, the fire extinguishing mechanism 5 is constituted by a solenoid, and in FIG. 2 showing the embodiment, 5a is an operation pin of a solenoid constituting the fire extinguishing mechanism 5, and the operation pin 5a of the fire extinguishing mechanism 5 is an automatic extinguishing device 10 It is arranged opposite to the seismic weight 10a. When the abnormality detection means 4 detects an abnormality and the fire extinguishing mechanism 5 is energized, the operating pin 5a of the fire extinguishing mechanism 5 tilts the seismic weight 10a of the automatic fire extinguishing device 10 to engage the operating portion 10b with the core lifting device 6. Since it removes, the automatic fire extinguishing apparatus 10 starts and extinguishes fire.

  By the way, the igniter 3 of the core up-down type oil combustor includes a red-hot type ignition heater using a filament and a spark discharge type ignition device using a discharge electrode. The ignition heater using a filament has a drive voltage of 3V specification. On the other hand, the discharge type ignition device is generally one having a drive voltage of 6 V specification, and the conventional combustor 1 uses a case where an ignition heater is used for the igniter 3 and the discharge type ignition device. When using the battery, the battery 2 having a different power supply voltage was used.

  On the other hand, the abnormality detection sensor 4 and the fire extinguishing mechanism 5 constituting the safety device A are generally those having a drive voltage specification of 5V. When the igniter 3 is an ignition heater having a low drive voltage, a 3V dry battery 2 is used. Therefore, when the igniter 3 and the safety device A are combined, the voltage of the dry battery 2 is insufficient. Therefore, it is necessary to provide a booster circuit in order to obtain the drive voltage for the abnormality detection means 4 and the fire extinguishing mechanism 5.

  Since the igniter 3 and the fire extinguishing mechanism 5 require a large current during driving, the voltage of the dry battery 2 temporarily decreases when the igniter 3 and the fire extinguishing mechanism 5 are energized. The new dry battery 2 can maintain a constant voltage even when the igniter 3 and the fire extinguishing mechanism 5 are energized, and the igniter 3 and the fire extinguishing mechanism 5 operate normally. 3 and the fire extinguishing mechanism 5 are energized, and the igniter 3 and the fire extinguishing mechanism 5 cannot be operated. When the igniter 3 is an ignition heater, the voltage obtained by the booster circuit becomes unstable, the operation of the fire extinguishing mechanism 5 becomes unstable, and the fire extinguishing mechanism 5 is detected even if the abnormality detecting means 4 detects an abnormality. May not work and could cause trouble that cannot be extinguished.

  The present invention realizes a safety device A that reliably operates a fire extinguishing mechanism 5 to extinguish a fire in a combination of an ignition heater type igniter 3 having a low driving voltage and a safety device A having a high driving voltage. Even if the drive voltage is low, the power supply voltage of the dry battery 2 is set in accordance with the safety device A having a high drive voltage, and the safety device A is directly driven by the power supply voltage of the dry battery 2.

  If the dry battery 2 is set in accordance with the high drive voltage of the safety device A, the output voltage when the igniter 3 is energized becomes too high and the filament of the ignition heater is blown. -It is necessary to output a low driving voltage of the data igniter 3

  Generally, when the safety device A of 5V drive is provided, four dry batteries 2 having a power supply voltage of 1.5V are used to obtain a power supply voltage of 6V. Although a method of obtaining a low driving voltage of the igniter 3 by energizing to the igniter 3 is considered, this method does not cause the filament to blow, but drives the igniter 3 among the four dry batteries 2 used in the safety device A. Since the consumption of the two dry batteries 2 is accelerated, a voltage difference is generated between the four dry batteries 2 and the two driving the igniter 3 are in a reverse charged state, causing heat generation or leakage, Since the life of the dry battery is shortened, it was impossible to implement it only with an idea.

  8 is a resistor provided in the circuit of the igniter 3, and the resistor 8 is connected in series with the igniter 3, and when the igniter 3 is energized by an ignition operation by closing the ignition switch 6, The power supply voltage of the dry battery 2 is divided by the internal resistance when the igniter 3 is energized and the resistance of the resistor 8, and the voltage of the igniter 3 is reduced by the voltage dividing ratio of the igniter 3 and the resistor 8. Thus, the resistance value of the resistor 8 is set.

  With this configuration, even when the dry battery 2 is set according to the high drive voltage of the safety device A, the low drive voltage of the ignition heater type igniter 3 can be output when the igniter 3 is energized, and the igniter Since all the dry batteries 2 provided in the combustor 1 are used both when the safety device 3 is energized and when the safety device A is energized, the voltage difference between the dry batteries 2 is no longer generated. Accordingly, since the dry battery 2 can be set in accordance with the high driving voltage of the safety device A, a booster circuit in which the voltage becomes unstable when the dry battery 2 is consumed becomes unnecessary, and the operation of the safety device A even when the dry battery 2 is consumed. Can be stabilized.

  In addition, the structure of the safety device A is different between the ignition heater type that requires a booster circuit and the discharge type model that does not require a booster circuit, and dedicated parts are required for each model. Although the efficiency was poor, in the present invention, the dry battery 2 having the same power supply voltage can be used, and the same safety device A can be used. When the igniter 3 is a discharge type ignition device having a high voltage, it can be dealt with by simply removing the resistor 8 provided in the circuit of the igniter 3 and short-circuiting the circuit. Parts and parts such as the safety device A can be shared, and manufacturing efficiency can be improved and costs can be reduced.

  Further, in the above configuration, the igniter 3 ignites by giving a certain energy to the combustion core, and may be able to ignite if the energization is continued even when the dry battery 2 is consumed and the voltage is lowered. On the other hand, the fire extinguishing mechanism 5 requires an instantaneous force. When the voltage of the dry battery 2 decreases, the force of the operating pin 5a of the fire extinguishing mechanism 5 becomes weak and the seismic weight 10a cannot be defeated. There is a risk that it will not be possible.

  The output voltage of the igniter 3 is determined by the internal resistance value when the igniter 3 is energized and the resistance value of the resistor 8, and the internal resistance when the igniter 3 is energized is determined. The output voltage of the igniter 3 can be changed by changing the resistance value of 8 to change the voltage dividing ratio. In the embodiment of the present invention, the resistance value of the resistor 8 is set larger than the resistance value when the igniter 3 is energized, the voltage of the resistor 8 having a high resistance value is high, and the voltage of the igniter 3 having a low resistance value. Was lowered.

  With this configuration, when the dry battery 2 is new and the voltage is high, the drive voltage of the igniter 3 can be obtained even if the partial pressure ratio is lowered, but the voltage of the igniter 3 when the dry battery 2 is exhausted. As a result, the output voltage that can drive the igniter 3 cannot be obtained prior to the fire extinguishing mechanism 5, and the fire extinguishing mechanism 5 can be driven while the combustion core can be ignited by the igniter 3. Therefore, the reliability as the safety device A has increased.

  In addition, the ignition heater is separated from the combustion wick except during ignition, and moves during the ignition operation to come into contact with the combustion wick and ignite, but if the filament contacts the combustion wick in a red-hot state, deformation or disconnection occurs. It was easy to happen. In the configuration of the present invention, the igniter 3 has a small internal resistance value when no current is applied, and the internal resistance value increases due to red heat when the current starts flowing and the current flows. Since the resistance value of the resistor 8 is higher than the internal resistance value of the igniter 3, the voltage rise of the igniter 3 can be suppressed when the voltage is divided at this voltage dividing ratio. Since the internal resistance value becomes higher than 8 and gradually becomes red hot, a time lag can be made from the start of energization of the igniter 3 until the filament starts red hot, and the filament comes into contact with the combustion core. Since it was red hot, the filament was not easily deformed or disconnected, and the durability of the ignition heater was improved.

  In another embodiment of the present invention, reference numeral 9 denotes voltage detecting means provided in the safety device A for detecting the voltage of the dry battery 2, and the voltage detecting means 9 is provided when the operation switch 6a is closed. When the voltage detection means 8 outputs a low voltage V, the fire extinguishing mechanism 5 is activated to extinguish the combustor 1.

  As a specific configuration, the igniter 3 and the fire extinguishing mechanism 5 become inoperable when the dry battery 2 is consumed and becomes a certain voltage or lower. This voltage is set as a low voltage V, and the voltage detection means 9 is set during combustion. When the low voltage V is detected, the fire extinguishing mechanism 5 is operated and the combustor 1 is stopped. Therefore, before the fire extinguishing mechanism 5 becomes inoperable, the user notices the consumption of the dry battery 2 and replaces it with a new dry battery 2. Therefore, the reliability as a safety device can be improved.

  Further, the output voltage when the igniter 3 is energized becomes weak as the dry battery 2 is consumed, and it becomes difficult to ignite, but when the voltage detection means 9 for detecting the voltage of the dry battery 2 is provided, the resistance value of the resistor 8 Is set smaller than the resistance value when the igniter 3 is energized so that the output voltage of the igniter 3 becomes higher, so that the voltage detection means 9 can reduce the low voltage V even when the voltage drops due to the consumption of the dry battery 2. Until the detection, good ignition performance can be maintained, and the reliability and usability of the safety device A can be improved.

  When the voltage detection means 8 detects the low voltage V and the combustor 1 is extinguished, if the user is informed by an alarm lamp, an alarm buzzer or the like, the use of the combustor 1 with the dry battery 2 consumed is used. Will not continue.

It is the circuit diagram which showed the function of this invention with the block. It is principal part sectional drawing of the oil combustor which shows the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combustor 2 Dry cell 3 Igniter 4 Abnormality detection means 5 Fire extinguishing mechanism 6 Core lifting device 6a Operation switch 7 Ignition switch 8 Resistor 9 Voltage detection means

Claims (4)

The combustor 1 includes
While providing an igniter 3 using a dry battery 2 as a power source,
There is provided a safety device A comprising an abnormality detection means 4 for detecting the state of the room in which the combustor 1 is installed, and a fire extinguishing mechanism 5 that operates according to an output signal of the abnormality detection means 4.
After the operation of the abnormality detection means 4 is started with the operation switch 6a closed during the center raising operation by the center lifting device 6,
By igniting the igniter 3 by an ignition operation with the ignition switch 7 closed, combustion is started,
In the combustor in which the fire extinguishing mechanism 5 operates and extinguishes when the abnormality detection means 4 detects an abnormal state in the room during combustion of the combustor 1,
Even when the driving voltage of the igniter 3 is different from that of the safety device A, the driving voltage of the igniter 3 is low, and the driving voltage of the safety device A is high, the driving voltage that enables the safety device A to be driven in the combustor 1. Equipped with a high-power battery 2
In addition, a resistor 8 connected in series with the igniter 3 is provided in the circuit of the igniter 3 energized by the ignition switch 7, and the power supply voltage of the dry battery 2 is controlled by the internal resistance and the resistor 8 when the igniter 3 is energized. The voltage is divided to output a low driving voltage of the igniter 3,
A combustor safety device characterized in that a low drive voltage igniter 3 and a high drive voltage safety device A can be used by the same dry battery 2.   The combustor safety device according to claim 1, wherein a resistance value of the resistor is set to be larger than an internal resistance value when the igniter is energized.   The safety device A is provided with voltage detection means 9 for detecting the voltage of the dry battery 2, and when the voltage detection means 9 detects a low voltage V, the fire extinguishing mechanism 5 is operated to extinguish the fire. The safety device for a combustor according to 1.   The combustor safety device according to claim 3, wherein when the voltage detecting means (9) is provided, the resistance value of the resistor (8) is set smaller than the internal resistance value when the igniter (3) is energized.

Images