JPS5924328B2 - Combustor safety device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustor safety device particularly suitable for use in a discharge ignition kerosene stove.

Conventionally, in an ignition device for a kerosene stove, ignition is generally performed by applying electricity to the nichrome wire while bringing a plug provided with a nichrome wire into contact with a wick.

In response to this, recently, a discharge ignition type kerosene stove has been proposed in which ignition is performed using a spark caused by high voltage discharge.

In this kerosene stove, a discharge electrode is disposed at the bottom of the combustion tube, and a spark is generated between the discharge electrode and the wick guide tube to ignite the wick taken out from the guide tube.

In this case, the discharge electrode has a discharge igniter with a diameter of, for example, 15
A high voltage boosted to approximately KV is applied.

The voltage of a power source battery is applied to this discharge igniter via an ignition switch.

Therefore, when repairing, inspecting, or cleaning the stove, if the combustion tube is moved from its normal position or the ignition switch is accidentally pressed with the combustion tube removed, the high voltage circuit will be activated. If your hands or fingers touch the stove at this time, you may receive an electric shock, which is extremely dangerous.

The present invention is intended to solve the above problems, and first to third embodiments of the present invention will be described below with reference to the drawings.

In addition, in FIGS. 1 to 8, common parts are given the same reference numerals.

Figure 1 shows the principle of the present invention, in which 1 is a power source battery, 2 is a
3 is a discharge igniter, 3 is an ignition switch, 4 is a safety switch according to the present invention, and 9 is a discharge electrode.

In the present invention, the safety switch 4 is opened and closed depending on the presence or absence of a combustion tube or the position of the combustion tube.

That is, even if the switch 4 is forcibly opened and the ignition switch 3 is accidentally closed when the combustion tube is removed from the stove or deviated from its normal position, the discharge igniter 2 was made so that it would not work.

Although the switch 4 is arranged on the ground side of the ignition switch 3 in FIG. 1, all the switches 4 may be connected between the ignition switch 3 and the battery 1 as shown in FIG.

FIG. 3 shows a first embodiment based on the above principle.

In FIG. 3, a combustion tube 7 is removably mounted on an outer core guide tube 6 provided at the base 5 of the kerosene stove.

A core 8 is housed inside the guide tube 6, and the tip of the core 8 is centered from the upper end of the guide tube 6 by operating a centering knob (not shown) as is well known. .

A discharge electrode 9 is fitted into the lower part of the combustion tube 7 with an insulator 10 in between.

A high voltage is applied to the discharge electrode 9 from the discharge igniter 2 through the lead wire 11 .

As a result, a spark is generated between the discharge electrode 9 and the guide tube 6, and the wick 8 centered between the two is ignited.

The discharge igniter 2 includes a step-up transformer and the like, and is operated by applying the voltage of the battery 1 via the switch 3.4.

The switch 4 is provided at the lower side of the guide tube 6.

This switch 4 has an elastic switching knob 12.
The switching knob 12 is configured to be changed between the position shown by the solid line and the position shown by the dotted line in the figure, depending on the presence or absence of the combustion tube 7.

Incidentally, reference numeral 13 is a knob for adjusting the position provided on the front side of the combustion tube 7.

Further, the switch 3 is actually provided at an appropriate position on the stove so as to be manually operable.

Incidentally, a spark may be generated between the discharge electrode 9 and the innermost small cylinder of the combustion cylinder 7.

According to the above configuration, when the combustion tube 7 is placed on the guide tube 6, a part of the side surface of the combustion tube 7 presses the switching knob 12 against its elasticity to the position shown by the solid line.

This closes the switch 4, so if the switch 3 is closed in this state, the discharge igniter 2 operates and ignition is performed.

Furthermore, when the combustion tube 7 is removed from the guide tube 6, the switching knob 12 moves to the position shown by the dotted line due to its elasticity.
This opens switch 4.

Therefore, even if the switch 3 is accidentally closed in this state, the discharge igniter 2 will not be activated.

Therefore, even if a part of your body touches the stove, you will not receive an electric shock and will remain safe.

FIGS. 4 and 5 show a second embodiment.

In the figure, a protrusion 14 having a width l is provided on the side of the combustion tube 7.
is provided.

Further, a board 15 is provided on the guide tube 6, and a switch 4 is provided on this board 15.

This switch 4 is provided with a switching knob 16 which is always biased in the direction of arrow A by an internal spring (not shown).

Therefore, this switching knob 16 is always in contact with the protrusion 14 in a normal state.

According to the above configuration, when the combustion tube 7 is placed in the normal position, that is, when the knob 13 is correctly facing forward, the switching knob 16 resists the urging force in the direction of the arrow A, and the protrusion 14 is being pressed by.

This closes the switch 4, so if the switch 3 is closed in this state, ignition will occur.

Further, when the combustion tube 7 is deviated from its normal position, the protrusion 14 is removed from the switching knob 16, so that the switching knob 16 further protrudes in the direction of arrow A from the state shown in the figure, thereby opening the switch 4.

Therefore, even if the switch 3 is closed, the discharge igniter 2 does not operate, and safety is maintained.

Further, even when the combustion tube 7 is removed, it is safe because the switching knob 16 protrudes and the switch 4 is opened.

Note that the width l of the protrusion 14 may be, for example, 2 to 3 cm.

6 to 8 show a third embodiment.

In the figure, a base plate 17 is provided on the side of the guide tube 6, and a projecting piece 18 is provided on the side of the combustion tube 7.

Further, a case 19 is provided on the board 17.

The case 19 has an opening 19a on the combustion cylinder 7 side, and the protrusion 18 is inserted into the opening 19a.

A leaf spring-like contact piece 20 is provided inside the case 19, and this contact piece 20 is bent at a bending point 20a.
A contact point 21 is provided at the tip.

This contact 21 projects downward from a hole 22 provided in the substrate 17.

On the other hand, a support body 24 having a contact point 23 at its tip is fixed to the lower part of the guide tube 6, and the switch 4 is constituted by this contact point 23 and the above-mentioned contact point 21.

Note that the contacts 21 and 23 are of course insulated from the stove body.

In the above configuration, when the combustion tube 7 is in the correct position, one end of the protruding piece 18 contacts the bending point 20a of the contact piece 20 and moves it in the direction of arrow B, as shown in FIGS. 6 and 7. to press.

In this state, the combustion tube 7 is locked in that position.

Due to the above-mentioned suppression, the contact 21 contacts the contact 23 and the switch 4 is closed.

Therefore, when the switch 3 is closed from this state, ignition is performed.

Further, when the combustion tube 7 is shifted from the locked position shown in FIG. 7, the protruding piece 18 is removed from the bending point 20a, the contact 21 is separated from the contact 23, and the switch 4 is opened, as shown in FIG.

Therefore, safety is maintained even when the switch 3 is closed.

Further, even when the combustion tube 7 is removed, the switch 4 is opened, so it is safe.

In each of the embodiments described above, the switch 4 is opened and closed in relation to the presence or absence of the combustion tube 7 or the position of the combustion tube 7, but this switch 4 is installed in front of the combustion tube 7 of a general kerosene stove. It may also be related to the opening and closing of a protective door with a grid.

That is, the switch 4 may be opened when the protection door is opened.

As described above, the present invention provides a discharge type combustion device that includes:
A means (for example, switching knobs 12, 16,
protrusion 14, protrusion piece 18, contact piece 20, etc.) and a switch (for example, switch 4) associated with the detection means, and when it is detected that the predetermined member is absent or has come off from the predetermined position, the switch to open and interrupt the electrical circuit.

This is related to the safety device for the combustor, which has been upgraded to c5.

Therefore, according to the present invention, when repairing, inspecting, or cleaning a discharge ignition type kerosene stove, etc., even if the ignition switch is pressed by mistake, there will be no electric shock, thereby improving safety. I can do it.

[Brief explanation of the drawing]

1 and 2 are basic circuit diagrams of the present invention, FIG. 3 is a side view showing the first embodiment of the invention, FIG. 4 is a side view showing the second embodiment, and FIG. The figure is a plan view of FIG. 4, FIG. 6 is a front view showing the third embodiment, FIG. 7 is a cross-sectional side view taken along the line ■-■ of FIG. 6 showing the closed state of the safety switch, and FIG. 6 is a side view of FIG. 6 with the safety switch in an open state; FIG. In addition, in the symbols used in the drawings, 2...discharge igniter, 4...safety switch, 7...combustion tube, 9...discharge electrode, 12 ,16...
・Switching knob, 14...Protrusion, 21.
23...Contact point.

Claims (1)

[Claims] 1. A discharge ignition type combustor is provided with means for detecting the presence or absence or position of a predetermined member and a switch associated with this detection means, and when it is detected that the predetermined member is absent or has come out of the predetermined position, the above-mentioned A combustor safety device that opens a switch to cut off the electrical circuit.