JPS61130710A - Smell absorption control device for wick type burner - Google Patents

Abstract

PURPOSE:To improve electric source life by a method wherein a capacitor is connected to the circuit of electric source and a motor in parallel with the motor through a change-over switch and the common terminal of the change- over switch is connected to this capacitor while the fixed opening terminal of the change-over switch is connected to the electric source and the fixed closing terminal is connected to the motor. CONSTITUTION:When combustion is started, the common terminal 24 of the change-over switch 24 changes to the fixed opening terminal 24b to start the charging for the capacitor 23. When the charging voltage arrives to a given value, the charging for the capacitor 23 is stopped and no current is present in the circuit perfectly. That is, no flowing of the circuit is present in the apparatus during combustion. When the fire is extinguished under these condition, the common terminal 24a of the change-over switch 24 returns to the fixed closing terminal 24c side, the electric charge of the capacitor 23 charged during combustion is discharged and the rotation of the motor for the smell absorption fan may be started.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an odor absorption control device for a wick-type oil combustor.

Conventional technology Generally speaking, wick-type oil combustors have the problem that when the wick is lowered to extinguish the fire, the oil vapor that continues to evaporate from the wick enters the high-temperature combustion cylinder, where it is thermally decomposed and produces a strong odor. Ta.

Recently, in order to reduce the odor generated when a lamp is extinguished, a method has been proposed in which an odor absorbing device such as a fan is operated at the same time as the extinguishing of the lamp, and the petroleum vapor that continues to evaporate from the wick is sucked into the tank and then released to the outside. Figures 3 and 4 show a wick-type oil combustor equipped with such a device. When the wick 1 is lowered to extinguish the fire, the fan 3 of the odor absorbing device 2 starts rotating and removes the petroleum vapor that continues to vaporize from the top of the wick 1. It is sucked into the tank 4 as shown by the arrow and discharged to the outside through the outlet 5.

According to this wick-type oil combustor equipped with an odor absorbing device, the oil vapor that continues to be generated after extinguishing the fire does not flow into the high-temperature smoking tube 6, but is released into the atmosphere through the tank 4, so that the oil vapor is thermally decomposed. The irritating odor caused by this process is eliminated, and the odor can be significantly reduced.

A control device for such an odor absorbing device for a wick-type oil combustor has conventionally been constructed as shown in FIG. The configuration will be described below along with an explanation of its operation. First, when the lamp wick top r knob 7 is rotated to raise the lamp wick 1 and ignited by an igniter (not shown), the common contact 8a of the switch 8 linked to the lamp top and bottom knobs 7 is normally open.4. Switches to s and b sides. As a result, when the capacitor 10 is charged via the switch 8 and the resistor 9, the transistor 11 and the transistor 1 are charged.
2, these transistors 11 and 12 become O
Do N.

Next, from this state, when the lamp wick upper and lower knobs 7 are rotated to lower the lamp wick 1 and extinguish the fire, the common contact 8a of the switch 8 is switched to the normally closed contact 8c side.

As a result, transistor 12, switch 8, resistor 13
．． Electricity flows to the base of the transistor 150 via the transistor 14, and the transistor 15 is turned on.

As a result, the motor 16 of the fan 3 starts rotating, and the petroleum vapor vaporized from the above-mentioned four-port lamp wick is sucked into the tank 4. On the other hand, at the same time, resistance 17
．． Charging of the capacitor 19 is started via the capacitor 18, and the converters 20 and 21 whose charging voltage reaches a certain value operate to turn off the transistor 11. This causes transistor 12. Also, the transistor 12 and the transistor 15 to which power was supplied via the switch 8 are also FFL, and the motor 16 of the fan 3 stops rotating. That is, the motor 16 rotates and performs the odor absorbing operation until the capacitor 19 is charged to a constant voltage, and then automatically stops.

Problems to be Solved by the Invention However, the above-mentioned conventional control circuit does not use the battery, which is the power source, as described above, when the combustor burns.
A weak current flows from the transistor 22 to the transistor 11.12. For example, when actually measuring this conventional circuit, the voltage of the battery 22 was 3.2V, and the current was approximately 0.83xA. As described above, this control circuit has a problem in that a weak current continues to flow while the combustor is burning, which wastes the battery 22. For example, when lighting a lamp wick, the battery voltage is 3V, the current that flows simultaneously with the ignition is 1A, and the time required for ignition is 5 seconds.The total power required for ignition from these is 3X I.
X5=15W-sec. With this calculation, 0.83mA as in the conventional example
If it is used for 10 hours while flowing the battery voltage, the current flowing is 0.837iJ2A = 0.83X 1
0'-3A oil consumption 10 hours = 10X60X6
0 seconds = 36X10-3 Power consumption = 3X0.83X 10-3 X36X 1
0a=89.64 W-sec That is, it is about 6 times the ignition power mentioned above, and therefore the same power as 7 ignition operations including normal ignition is consumed. As a result, there was a problem in that the life of the battery was significantly shortened.

The present invention was devised in view of these points, and aims to improve the life of the power source by eliminating wasteful consumption of power sources such as batteries.

Means to Solve the Problems In order to achieve the above object, the present invention connects a capacitor in parallel with the motor via a changeover switch in the circuit between the power supply and the motor, and connects the common contact of the changeover switch to this capacitor. , the normally open contact of the changeover switch is used as a power source,
It consists of a normally closed contact connected to a motor.

Operation Since the present invention is constructed as described above, during combustion, the selector switch is switched to the power supply side and the capacitor is charged, but when the charging of the capacitor is completed, the charging action is automatically stopped. After that, no power is consumed and the lifespan of the power supply can be extended.

EXAMPLE Below, one example will be explained using FIG. 1 and FIG. 2. In FIG. 1, 21 is a power source such as a battery, 22 is a motor for an odor absorbing fan connected to this power source 21, and 23 is the above-mentioned motor. A capacitor is connected in parallel to the power supply 21 and the motor 22 via a changeover switch 24, and is connected to a common contact 24a of the changeover switch 24. and selector switch 2
The normally open contact 24b of No. 4 is connected to the power supply 21 via the resistor 25, and the normally closed contact 24c of No. 4 is connected to the motor 22.

In the above configuration, when this control circuit is used in a wick-type oil combustor such as that explained in FIGS. 3 and 4, and the wick 1 is raised to start combustion, the common contact 2 of the changeover switch 24
4 a switches to the normally open contact 24b side and the capacitor 23
Charging will start.

When the charging pressure of the capacitor 23 reaches a certain value, charging of the capacitor 23 stops and no electricity flows through the circuit. In other words, the flow of electricity during combustion of the appliance, in other words, the unnecessary use of electricity, is eliminated.

When the lamp wick 1 is lowered to extinguish the fire in such a state, the common contact 24a of the switching unit 24 returns to the normally closed contact 24c side, and the charge in the capacitor 23 that was charged during combustion is discharged, and the motor 22 starts. Start rotating. This rotation of the motor 22 is continued until the electric charge stored in the capacitor 23 decreases to a value insufficient to rotate the motor 22, and during that time (about 1 minute) vaporization occurs from the upper part of the lamp wick, as described in the conventional example. The oil vapor continues to be sucked into the tank and then released to the outside.

It should be noted that the capacitor 23 needs to have a charging capacity sufficient for the rotation of the motor 22, and if the voltage of the power source 21 is 3V, about 1 volt is required.

Further, the resistor 25 for protection during charging is suitably about 100Ω.

FIG. 2 shows another embodiment, in which the power supply 2
1 and the motor 22 between the collector of the transistor 26 and the motor 22.
The emitter is connected, and the base of the transistor 26 is connected to the normally closed contact 24c of the changeover switch 24 via a resistor 27. 1 According to this embodiment, the transistor 26 is turned on by the charge of the capacitor 23, and the motor 22 is turned on by the voltage of the stain source 21.
Since the capacitor 24 rotates, the transistor 26
It is only necessary to have a capacity to charge enough charge to make the capacitor ○N, and there is an advantage that cost reduction can be achieved by reducing the capacitance of the capacitor. Note that the other operations and effects are similar to those of the embodiment described above.

Effects of the Invention As is clear from the description of the embodiments, according to the present invention, no wasteful electricity flows during combustion of the appliance, so the life of the power source such as a battery can be lengthened accordingly, which is economical. Moreover, the circuit is extremely simple, requires fewer parts, and the risk of failure is reduced, which has great effects.

[Brief explanation of drawings]

Fig. 1 is a circuit diagram of an odor absorption control device according to a first embodiment of the present invention, Fig. 2 is a circuit diagram of the second embodiment, and Fig. 3 is a combustion diagram using the odor absorption control device of the present invention and a conventional odor absorption control device. A top view of the device, FIG. 4 is a sectional view, and FIG. 5 is a circuit diagram of a conventional odor absorption control device. 21 - Power supply, 22 - Motor, 23... Capacitor,
24... Selector switch, 24a ・Common contact, 24b
- Normally open contact, 24c... Normally closed contact, 26... Transistor. Name of agent: Patent attorney Toshio Nakao and 1 other person21
・-・Dengen 24...Sword Io Switch Masu 24Q...Koshinaso Meisho, 241...Kou F! X#n, Figure 2, Figure 3, Figure 5

Claims (2)

[Claims] (1) Connect a capacitor in parallel with the motor through a changeover switch to the circuit between a power source such as a battery and the motor for the odor absorbing fan, connect the common contact of the changeover switch to this capacitor, and Odor absorption control device for a wick-type oil combustor that connects the open contact to the power source and the normally closed contact to the motor. (2) Claims in which a transistor is connected between the normally closed contact of the changeover switch and the motor, the base of this transistor is connected to the normally closed contact of the changeover switch, and the collector and emitter are connected to the motor and the power source. The odor absorption control device for a wick-type oil combustor according to item 1.