JP3463708B2 - Oil burner with automatic fire extinguishing mechanism - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core up-down type oil combustor equipped with various safety devices that operate by using a power source of a dry battery.

[0002]

2. Description of the Related Art A core-up and down type oil combustor is equipped with a power source of a dry battery to operate an ignition means.
With the generalization of ICs and transistors that operate at low current, a combustor controller is created by an electric circuit,
Many have been operated by the power source of dry batteries for ignition.

Some simple control devices detect vibrations such as earthquakes, detect the amount of oil in the oil tank, and detect abnormal overheating of the burner. For complex control devices, the presence or absence of flame is detected. In some cases, the amount of oxygen in the room air is detected, and the automatic fire extinguishing mechanism provided in the oil combustor is used to perform a safe operation of extinguishing the oil combustor when an abnormal condition is detected.

[0004]

By the way, since the burner of the oil combustor of the upper and lower wicks is combusted by natural ventilation,
It is possible to ignite with a match flame and burn as usual without using the ignition means provided in the oil combustor.
For this reason, the dry battery is discharged or it is not possible to avoid burning with the dry battery removed.In this case, various abnormality detection means installed in the oil combustor do not operate, and the oil combustor malfunctions. Can no longer respond to.

For this reason, in the past, a warning sign was displayed on the oil combustor to instruct the ignition by the dry cell, but old used oil combustors have normally ignited by a match, so that a new type is also available. In the same way, the safety function may be used assuming that the expected result can be obtained, and the mechanism that informs the operator that the oil combustion is abnormal usage is not a mere instruction on the oil combustor side. is necessary.

[0006]

In order to solve the above-mentioned problems, the present invention has a core upper and lower knob 3 for rotating a core vertical shaft 1.
A rotary plate 5 which is attached with an operation switch 4 which is closed at the center-raising position of the core upper and lower knobs 3 and a return spring 2 which rotates together when the core vertical shaft 1 is centered and stores force in the return spring 2.
The rotating plate 5 is attached to the engaging plate 6 that locks at the center-up combustion position against the accumulated force of the return spring 2, and the engaging plate 6 is attached so as to face the engaging plate 6. Solenoid 7 to drive
And an abnormality detecting means 9 for detecting various abnormalities such as an earthquake. The movable body 8 of the solenoid 7 energized when the abnormality detecting means 9 detects an abnormality separates the engaging plate 6 from the rotating plate 5 and returns it. In an oil combustor in which the core is lowered by the force of the spring 2, the solenoid 7 has two coils 7a and 7b, and each coil changes the moving direction of the movable body 8 by a pulsed drive current and pushes the movable body 8. It is composed of a keep solenoid that holds the position or pulling position, and when the operation switch 4 is switched to the open circuit when the power source is normal, the movable body 8 separates the engaging plate 6 from the rotating plate 5 by the pulsed drive current, and the power source is normal. Then, when the operation switch 4 is switched to the closed circuit, the movable body 8 moves the engagement plate 6 to a position where the rotation plate 5 can be locked.

Further, the solenoid 7 is energized when the operation switch 4 is closed so that the fire can be surely extinguished even if the power source voltage is lowered by the abnormality detecting means 9 during combustion.
The coil 7a is connected to the power source through the voltage drop means 10, and the coil 7b of the solenoid 7 that is energized when the operation switch 4 switches to the open circuit is directly connected to the power source.

In order to prevent over-discharging of the battery power source, ignition means 12 is attached near the wick 11 raised by the rotation of the wick vertical shaft 1, and the coil 7a of the solenoid 7 energized when the operation switch 4 is closed is opened. The ignition timer 13 that starts counting when the
After the operation of, the ignition means 12 is operated for a fixed time.

[0009]

The present invention uses a keep solenoid as the solenoid 7 for operating the automatic core-lowering fire extinguishing system when the abnormality detecting means 9 is activated. The solenoid 7 moves the movable body 8 when the contact of the operation switch 4 is switched. The engaging plate 6 and the rotating plate 5 are in the lockable position at the center-up position, and the lockable position at the center-down position.

For this reason, when the power source such as the dry battery is exhausted or pulled out, the engaging plate 6 and the rotating plate 5 cannot be locked even if the core raising operation is performed, and the oil combustor is used. become unable.

On the other hand, the solenoid 7 is connected to the power source through the voltage lowering means 10 when the core is raised, and is directly connected to the power source when the core is lowered, so that the core can be raised and burned when a battery with a small remaining capacity is used as the power source. If the start of the
Even if the power source is used, the solenoid 7 for extinguishing the fire is directly connected to the power source and operates at the true power supply voltage, so that the fire can be surely extinguished.

Further, the solenoid 7 and the ignition means 12 which are energized at the time of the core raising operation consume a large current, and the ignition means 12 is energized by the ignition timer 13. Therefore, by delaying the activation of the ignition timer 13, the solenoid 7 and the ignition means 12 do not operate at the same time, and the over-discharge of the power source can be prevented.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. By operating the core up / down knob 3, the core up / down shaft 1 rotates and the core 11 moves up and down.

Reference numeral 5 denotes a rotating plate which rotates via the contact portion 5a when the core up / down lever 14 is operated in the direction of raising the core. 2 is mounted between the rotating plate 5 and the fire extinguisher base 15. A return spring for urging the core up / down lever 14 in the core lowering direction, 6 an engaging plate movable around a support shaft 6a attached to the fire extinguisher base 15, and the rotating plate 5 and the engaging plate 6 include the core 11 The return spring 2 is held in the extended position.

Reference numeral 7 is a solenoid attached to the fire extinguisher base 15, 8 is a movable body which is driven when the solenoid 7 is energized, and 9
Is an abnormality detecting means for detecting vibration such as an earthquake, deterioration of combustion state, and other abnormalities, and is a driving piece 6b of the engaging plate 6.
And the movable body 8 are in contact with each other, and when the abnormality detecting means 9 is activated, the solenoid 7 is energized, and the movable body 8 pushes the engaging plate 6 to release the locking with the rotating plate 5. 5 is rotated by the force of the return spring 2 and rotates the core vertical shaft 1 in the core lowering direction via the core vertical lever 14.

The solenoid 7 is composed of a keep solenoid that holds the movable body 8 in a pushing position or a pulling position by a pulsed driving current. The solenoid 7 has two coils 7a and 7b. When a pulsed drive current is sent to one coil 7a, the movable body 8 separates from the drive piece 6b and the other coil 7b receives a pulsed drive current. When the movable body 8 is sent, the movable body 8 pushes the driving piece 6b to unlock the engagement plate 6 and the rotating plate 5. The energy-saving structure is such that the movable body 8 is energized only when the movable body 8 is moved and is not energized normally. ing.

Reference numeral 4 denotes an operation switch that opens when the center is lowered, and closes when the center is raised or when the center is raised.
Is a voltage drop means connected in series with the coil 7a of FIG. 7, 17 is a first timer that starts counting when the operation switch 4 is closed, and 18 is a first transistor that drives the coil 7a of the solenoid 7. When the operation switch 4 is closed, the first transistor 18 is turned on and the voltage drop means 10
When the first timer 17 counts up, the first transistor 18 is turned off.

Reference numeral 19 is a burner controller incorporating the abnormality detecting means 9, 9a is a vibration sensing switch for detecting vibration such as an earthquake, and 9b is an abnormal combustion detection switch composed of a temperature sensor attached to the burner section. Detects the amount of oxygen in the room or detects the presence or absence of combustion flame, and when it determines that there is an abnormal state, the contact point of the abnormality detecting means 9 is opened to automatically extinguish the oil combustor.

Reference numeral 20 is a discharge-type second timer which starts counting when the operation switch 4 is turned off or the abnormality detecting means 9 is opened, and 21 is the coil 7 of the solenoid 7.
It is a second transistor that drives b, and the operation switch 4
When is ON, the second timer 20 is charging the capacitor, and since the previous transistor is OFF, the second transistor 21 is OFF. Further, when the operation switch 4 is turned off, the transistor in the previous stage is turned off, so that the second transistor 21 is turned on.
Then, the coil 7b of the solenoid 7 is driven, and when the discharge-type second timer 20 that starts counting is counted up, the second transistor 21 is turned off.

Reference numeral 12 is an ignition means mounted near the raised wick 11, 13 is an ignition timer for counting the time during which the ignition means 12 continues to operate, 22 is a third transistor for driving the ignition means 12, and 23 is ignition means. The energization start detection circuit 12 detects the operation of the first transistor 18 via the diode. When the first transistor 18 changes from ON to OFF, the energization start detection circuit 23 ignites. When the timer 13 is energized, the third transistor 22 is turned on. After that, the ignition timer 13
Counts up, the third transistor 22 turns off
Therefore, the ignition means 12 stops the operation.

Therefore, when the center raising operation is performed, the solenoid 7 is first energized for about 2 seconds so that the rotating plate 5 and the engaging plate 6 can be locked, and then the ignition means 12 is operated for about 20 seconds. Therefore, the solenoid 7 and the ignition means 12, which require a large current, are energized with a time lag,
Since the dry cell does not over discharge, the life could be extended.
Further, since the ignition means 12 is controlled by the ignition timer 13, the structure for driving the ignition knob can be omitted.

[0022]

As described above, according to the present invention, the keep solenoid is used to energize in a pulsed manner only when the core is raised and lowered, and it is not necessary to continue energizing the solenoid 7 during normal combustion. Nevertheless, it requires less electric energy and can be used for a long time even with a dry battery power source.

The solenoid 7 is energized for a short time to move the movable body 8 each time the operation switch 4 is switched,
Since the engaging plate 6 moves to the position where it can be locked with the rotating plate 5 by the movement of the movable body 8 when the core is raised, combustion cannot be started and the abnormality detecting means 9 cannot operate when the battery is removed or exhausted. It is a safe design where the oil combustor cannot be used in this condition.

Further, since the coil 7a of the solenoid 7 which is conducted during the core raising operation is connected to the power source through the voltage drop means 10, when the dry battery is deteriorated, it becomes unusable early and the power source voltage drops. Therefore, various safety devices did not become inoperable during combustion, and the solenoid 7 was reliably activated to automatically extinguish the fire in the event of an abnormality.

Further, since the ignition means 12 which uses a large current together with the solenoid 7 is operated for a certain period of time after the operation of the solenoid 7 is completed to ignite the wick 11, simultaneous discharge by the solenoid 7 and the ignition means 12 is performed. Therefore, there is no fear that the ignition performance will be deteriorated due to the voltage drop due to over-discharging or the battery life will be shortened, and the battery can be used for a long time without being replaced.

Further, since the ignition means 12 is constructed so that its operation is controlled by the ignition timer 13, the conventional ignition lever and ignition knob parts are not required, and the petroleum combustor which is easy to manufacture is completed.

[Brief description of drawings]

FIG. 1 is a front view of an operating portion of a fire extinguisher for an oil combustor according to the present invention, showing a core-down fire extinguishing position.

FIG. 2 is a front view of the operating portion of the fire extinguisher of the oil combustor according to the present invention, showing the center-up combustion position.

FIG. 3 is a cross-sectional view of essential parts of an oil fired combustor with an automatic fire extinguishing mechanism according to the present invention.

FIG. 4 is an electric circuit diagram showing an embodiment of a control device used in the oil combustor according to the present invention.

[Explanation of symbols]

1 core vertical axis 2 Return spring 3 core top and bottom knobs 4 operation switch 5 Rotating plate 6 Engagement plate 7 solenoid 7a coil 7b coil 8 movable bodies 9 Abnormality detection means 10 Voltage drop means 11 cores 12 Ignition means 13 Ignition timer

Claims (3)

(57) [Claims] 1. A core up / down knob 3 for rotating a core up / down shaft 1.
A rotary plate 5 which is attached with an operation switch 4 which is closed at the center-raising position of the core upper and lower knobs 3 and a return spring 2 which rotates together when the core vertical shaft 1 is centered and stores force in the return spring 2.
The rotating plate 5 is attached to the engaging plate 6 that locks at the center-up combustion position against the accumulated force of the return spring 2, and the engaging plate 6 is attached so as to face the engaging plate 6. Solenoid 7 to drive
And an abnormality detecting means 9 for detecting various abnormalities such as an earthquake. The movable body 8 of the solenoid 7 energized when the abnormality detecting means 9 detects an abnormality separates the engaging plate 6 from the rotating plate 5 and returns it. In an oil combustor in which the center of the body is lowered by the force of the spring 2, the solenoid 7 has two coils 7a and 7b, and each coil changes the moving direction of the movable body 8 by a pulsed drive current and pushes the movable body 8. It is composed of a keep solenoid that holds the position or pulling position, and when the operation switch 4 is switched to the open circuit when the power source is normal, the movable body 8 separates the engaging plate 6 from the rotating plate 5 by the pulsed drive current, and the power source is normal. When the operation switch 4 is switched to the closed circuit with, the movable body 8 moves to the engaging plate 6
Petroleum combustor with an automatic fire extinguishing mechanism that moves to a position where it can be locked with the rotating plate 5. 2. The coil 7a of the solenoid 7 which is energized when the operation switch 4 is switched to the closed circuit is connected to the power source through the voltage drop means 10, and the coil 7a of the solenoid 7 which is energized when the operation switch 4 is switched to the open circuit is formed. The petroleum combustor with an automatic fire extinguishing mechanism according to claim 1, which is directly connected to a power source. 3. A wick 1 raised by rotation of a wick vertical shaft 1.
Ignition means 12 is attached in the vicinity of 1, and the operation switch 4
The automatic fire extinguishing system according to claim 1, further comprising: an ignition timer 13 which starts counting when the coil 7a of the solenoid 7 energized when is closed is opened, and the ignition means 12 is operated for a predetermined time after the solenoid 7 is operated. Oil burner with mechanism.