JP2850731B2 - Oil-fired discharge igniter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge igniter for an oil-fired combustor, which ignites a combustion wick using electric discharge.

[0002]

2. Description of the Related Art Generally, an igniter for an oil combustor is one in which electricity from a dry battery flows through a thin filament to cause the filament to glow red and ignite a combustion wick.

[0003] A battery using a dry battery as a power source has not been commercialized. However, a technique for providing a discharge electrode for ignition with a combustion core interposed therebetween and using the discharge spark to ignite the combustion core is known.
(Japanese Examined Utility Model Publication No. Sho 63-35244 and Japanese Patent Laid-Open Publication No. Sho 56-46928)
No./JP-A-58-213121)

JP-A-56-46928 and JP-A-58-213121 disclose using a dry battery as a power source, with the tip of a discharge electrode for ignition facing the inside of a core, and burning between an inner flame tube. There is disclosed a technique in which a discharge spark is generated across the wick to ignite the combustion wick, and in the ignition device of this embodiment, the combustion wick protruding from the gap between the inner and outer cylinders reaches the wick height during normal combustion. During the ascent, discharge sparks are continuously generated.

[0005]

SUMMARY OF THE INVENTION The present invention relates to the above-mentioned prior art wherein the latter dry cell is used to ignite the combustion wick using a discharge electrode. If you use batteries,
There is a problem that sparks due to strong discharge are difficult to obtain like those using a household AC power supply.Dry batteries have large voltage fluctuations when they are new and after some use, and the voltage is not stable. There is a problem that becomes weak.

Further, when the combustion wick deteriorates after the lapse of the combustion time, subtle changes in the surface of the combustion wick due to a change in the height of the wick, a decrease in the strength, and adhesion of tar are caused. In some cases, the size of the combustion wick set at the time of shipment from the factory may slightly deviate from that of the discharge electrode, and there are many problems on the side of the combustion wick for ignition.

JP-A-56-46928 and JP-A-58-46958 are proposals for smoothly igniting a discharge type ignition device.
No. 213121 has a configuration in which a discharge wick is continuously generated while the combustion wick is raised to a wick height during normal combustion. However, even if this structure can solve the problem on the combustion wick side, it does not satisfy the specified requirements. No response is obtained when the discharge spark from the dry battery is weakened after several uses with no voltage output, and even if this structure is implemented, the opening and closing structure of the igniter switch is very complicated and costly However, it was impossible to adopt it as an actual commercial ignition device in terms of performance.

[0008]

According to the present invention, in order to solve the above-mentioned problems, a combustion wick 4 which moves up and down by rotation of a wick vertical shaft 3 is mounted between a wick inner tube 1 and a wick outer tube 2, Inner / outer cylinder 1
2 and discharge electrode 5
5a, an igniter switch 7 that opens and closes when the core up / down knob 6 that rotates the core up / down shaft 3, and a rotating plate 9 that rotates in conjunction with the core up / down knob 6 are provided. A return spring 8 for driving the core vertical shaft 3 in the core lowering direction is attached,
A lock portion 10 for locking the rotating plate 9 against the return spring 8 is provided, and the igniter switch 7 which is open at the fire extinguishing position of the core up / down knob 6 raises the combustion core 4 by the core up / down knob 6. In operation, the circuit is closed and discharge sparks are generated from the discharge electrodes 5 and 5a. The igniter switch 7 is used to open the circuit after the ignition operation. The return spring 8 that raises the combustion core 4 to the maximum protruding position higher than the position and drives the core vertical shaft 3 in the core lowering direction stops the core lowering operation at the maximum combustion position of the combustion core 4 by the lock portion 10. At the same time, the igniter switch 7 maintains an open circuit between the fire extinguishing position and the maximum combustion position of the combustion wick 4, and closes between the maximum combustion position and the maximum protruding position, so that the combustion wick 4 moves to the maximum combustion position. Maximum projecting position beyond Back it is from the discharge electrode 5 · 5a with increasing wick 4 against the spring 8 and configured to generate a discharge spark between.

[0009]

The height of the combustion wick 4 during normal combustion cannot be made too high, and if it is raised, abnormal combustion may occur. For this reason, in the case where the ignition operation is performed by a series of operations of the wick upper / lower knob 6, the ignition heater approaches the wick after stopping the raising operation of the combustion wick 4. Therefore, the upper limit of the height of the combustion wick 4 is limited to the wick height at which normal combustion is performed even in the igniter ignited by the discharge spark, and ignition is performed in the range of the wick height. I have.

According to the present invention, in order to improve the reliability of ignition when the power supply voltage is reduced and the discharge spark is weakened, the combustion wick 4 can be raised higher than the normal combustion position during the ignition operation. The ignition position by the discharge electrodes 5 and 5a is raised, so that air can easily flow into the ignition position and even in a state where fresh air is difficult to enter such as when the combustion cylinder does not move, ignition can be reliably performed. It has become.

A return spring 8 and a lock portion 10 are provided on the rotary plate 9 linked to the core vertical knob 6, so that when the hand is released from the core vertical knob 6 after ignition, the rotary plate 9 is turned by the force of the fire-extinguishing spring 10. 9 rotates until it locks with the lock portion 9b to lower the combustion wick 4, so that the combustion wick 4 can move to the maximum combustion position and start normal combustion.

Further, in order to generate a discharge spark while raising the combustion wick 4, in the present invention, the ignition device is started to operate only after the normal combustion position is exceeded. When returning to the position, since the igniter switch 7 is also open, there is no need to change the open / close switching position of the igniter switch 7 when raising the core and lowering the core.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction will be described below with reference to the drawings showing an embodiment. 1 is a core inner cylinder, 2 is a core outer cylinder, 4 is a combustion wick housed between the core and outer cylinders 1 and 2. The outer cylinders 1 and 2 are attached upward from the lower oil tank 11. Numeral 3 denotes a core vertical axis which moves the core cylinder holding the combustion core 4 by operating a lever or operating a rack and pinion gear.
The combustion wick 4 is moved up and down by the rotation operation of.

Reference numeral 3a denotes a drive lever which rotates together with the core vertical shaft 3, and reference numeral 6 denotes a core vertical knob which rotates the core vertical shaft 3. In the embodiments shown in FIGS. It concerns a structure for driving the shaft 3. 6a
Is a knob lever with which a core up / down knob 6 is attached to one end, and the other end engages with the drive lever 3a to perform a seesaw motion. When the core up / down knob 6 is pressed down, the knob lever 6a rotates the drive lever 3a, The center vertical axis 3 rotates in the center raising direction. When the wick vertical knob 6 is pulled up, the wick vertical shaft 3 rotates via the knob 6a and the drive lever 3a, and the wick 4 moves in the wick lowering direction.

In the embodiment shown in FIGS. 7 and 8 which shows a center raising / lowering device for dial operation, the center vertical knob 6 is directly attached to the center vertical shaft 3, and when the center vertical knob 6 is rotated, the center vertical shaft 3 is moved to the rack. -Raise the core cylinder holding the combustion core 4 via the pinion gear. When the wick vertical knob 6 is reversed, the wick vertical shaft 3 moves down the core cylinder and moves the wick 4 to the fire extinguishing position. Therefore, the combustion wick 4 can be moved up and down by operating the wick up / down knob 6.

Numeral 14 denotes a combustion cylinder provided above the inner / outer cylinders 1 and 2 and comprises an inner / outer flame cylinder and an outer cylinder. The upper end of the raised combustion core 4 has an inner / outer cylinder gap. Protruding at the bottom inside,
The fuel in the oil tank 11 is sucked up by the combustion wick 4,
When the tip of the combustion wick 4 is ignited, combustion starts in the combustion tube 14.

Reference numeral 9 denotes a rotating plate which rotates in conjunction with the core vertical knob 6, 9a denotes a locking portion provided between the core vertical knob 6 and the rotating plate 9, and 8 denotes a rotating plate 9 and an oil combustor. A return spring 10 attached between the main body parts is a lock portion that locks the rotation plate 9 against the force of the return spring 8 that attempts to drive the rotation plate 9 in the core lowering direction.

In the embodiment of FIG. 1 to FIG. 3 and FIG. 6 in which the core vertical shaft 3 is driven by the lever operation, the rotating plate 9 is arranged so as to be at the same center of rotation as the knob 6a for seesaw movement. When the core upper / lower knob 6 is pushed down for the operation of raising the core, the knob lever 6 a to which the core upper / lower knob 6 is attached pushes the locking portion 9 a of the rotating plate 9 and rotates together with the return spring 8 being extended.

When the wick 4 is lifted and the rotating plate 9 is locked to the lock portion 10, the return spring 8 holds the stored position. Never returns. In this state, the height of the wick is changed by slightly raising and lowering the wick up / down knob 6, and the amount of combustion can be adjusted during combustion. When the lock of the lock portion 10 is released by any means, the return spring 8 rotates the knob lever 6a in the core lowering direction via the lock portion 9a of the rotating plate 9, thereby forcing the combustion core 4 to move. Return to fire extinguishing position.

In the embodiment of FIGS. 7 and 8 showing a center operation device for dial operation, there is no knob 6a shown in the embodiment of lever operation, so that the rotating plate 9 is arranged concentrically with the center vertical shaft 3. I have. When the core up / down knob 6 rotates the core up / down shaft 3, the drive lever 3a pushes the locking portion 9a of the rotating plate 9 and rotates together, accumulates energy in the return spring 8 while raising the combustion core 4, and burns. The rotating plate 9 is locked to the lock portion 10 at the position where the lead 4 is raised.

Reference numeral 5a denotes a discharge electrode provided to face the side or upper edge of the combustion core 4, and the tip of one discharge electrode 5 (positive side) is bent upward and rises to the combustion position. And the other discharge electrode 5a.
The (minus side) is preferably provided near the upper edge of the combustion core 4 when the combustion core 4 is raised to the maximum protruding position, and is opposed to the tip of the discharge electrode 5 via a gap.

Reference numeral 7 denotes an igniter switch for supplying electricity to the discharge electrodes 5 and 5a. The igniter switch is open at the fire extinguishing position of the wick 4, and is closed when the wick 4 rises toward the maximum projecting position. Then, a discharge is started in the gap between the discharge electrodes 5, 5a. For this reason, the combustion wick 4 rises in the vicinity of the occurrence of the discharge spark, and ignites when the relationship between the discharge electrodes 5, 5a and the combustion wick 4 becomes a position suitable for discharge ignition. Even if the state of the tip of No. 4 changes according to use, the aim is to ensure the ignition.

In general, in the case of a core-inverted type oil combustor, the combustion cylinder 1
If the combustion wick 4 protruding into the inside of the fuel cell 4 is too high, abnormal combustion will occur. Therefore, the height of the combustion wick 4 at the maximum protruding position and the maximum combustion position is matched, and the ignition device ignites using the discharge electrodes 5.5a. However, the wick height at the time of ignition has been performed in combination with a wick raising / lowering device which can rise to a maximum combustion position. However, this type of ignition device, which is currently proposed as a conventional example, is unsatisfactory in performance and requires some measures.

In order to improve the performance of an igniter which ignites with a discharge spark whose performance is unsatisfactory, the present invention examines the height of a combustion wick at the time of ignition for the first time, and ignites with a discharge spark instead of an ignition heater. For this reason, it has been found that setting the core height position, which is the ignition position by the discharge spark, higher than the core height during normal combustion, is an important requirement for good ignition. In order to implement this important requirement, the present invention proposes an implementation structure having specificity optimal for the structure of the discharge ignition device.

That is, the rotating plate 9 to which the return spring 8 is attached
Is provided with a locking device for driving the core vertical shaft 3 in the core lowering direction, and a lock device for holding this force at the maximum combustion position of the combustion core 4 is provided. When the rotating plate 9 is rotated by 6, it is specified that the rotating plate 9 can be further rotated beyond the lock portion 10. Then, when the ignition operation is completed and the hand is released from the core up / down knob 6, the rotating plate 9 is reversely rotated to the lock portion 10 by the return spring 8, and the combustion core 4 which has risen to the maximum protruding position performs normal combustion. It instantaneously descends to the maximum possible combustion position and attempts to continue combustion.

With this structure, the combustion wick 4 is ignited at a wick height higher than the maximum combustion position at which normal combustion can be performed, and the mounting position of the discharge electrodes 5, 5a is, of course, the inner / outer cylinder 1,. Since it can be separated upward from the receiving portion 2, air can easily flow into the lower part of the discharge spark even in a narrow space such as the combustion tube 14.

When the power supply voltage drops, such as a used dry battery, the discharge spark has low energy, so that the periphery of the discharge spark is covered with white petroleum vapor and cannot be ignited. By heating the gas near the discharge electrodes 5 and 5a, a rising gas flow is created and air can smoothly flow into the lower part of the discharge spark, so that white oil vapor flows upward and oil gas flows. Since the oil and gas are diluted and an optimal mixture ratio is obtained for ignition, ignition is ensured.

On the other hand, it is conventionally known that raising the combustion wick 4 to a normal combustion position while generating a discharge spark at a fixed position is an effective means as an ignition device for discharge ignition. For this reason, in the present invention, attention is paid to the above-described structure in which the ignition by the discharge spark is performed while the combustion wick 4 protrudes to a maximum protruding position higher than the maximum combustion position. In the process in which the combustion wick 4 rises from the fire extinguishing position to the maximum combustion position, the open circuit is maintained, and after the combustion wick 4 exceeds the maximum combustion position, the circuit is closed to generate a discharge spark from the discharge electrodes 5, 5a. While changing the height, it is possible to ignite when passing through a position suitable for discharge ignition.

By specifying the open / close position of the igniter switch 7 as in this structure, the normal combustion range and the ignition operation range can be set independently. When the ignition operation is completed, the return spring 8 is used. Since the range returns to the normal combustion range, the igniter switch 7 can be set to the open state at this time. Therefore, unlike the conventional example in which the combustion range and the ignition range overlap each other, it is not necessary to make the position of the combustion wick 4 when the wick rises when the igniter switch 7 is closed and the position of the combustion wick 4 when the wick is opened, different from each other. The opening and closing structure of the switch 7 becomes very simple.

As a specific opening / closing structure of the igniter switch 7, the igniter switch 7 of the embodiment shown in FIGS. 1 and 2 opens and closes the switch by the movement of the drive lever 3a. The switch 7 is opened and closed by the movement of the rotating plate 9. FIGS. 7 and 8 show an embodiment of the dial operation, in which the switch of the igniter switch 7 is opened and closed by the movement of the locking portion 9 a of the rotating plate 9.

12 is an anti-seismic device for sensing vibrations such as earthquakes,
Reference numeral 12a denotes a seismic weight constituting a vibration detection unit of the anti-seismic device 12, reference numeral 13 denotes a substrate of a core lifting device which also serves as a base of the anti-seismic weight 12a of the anti-seismic device 12, and
2, the core vertical shaft 3, the core vertical knob 6, the rotating plate 9
-The igniter switch 7 is incorporated.

The anti-seismic device 12 of the embodiment is provided with
It is configured to be movable, and strong vibration is detected
2a, when the lock portion 10 and the rotating plate 9 are disengaged, the rotating plate 9 is rotated by the force of the return spring 8,
The combustion wick 4 descends from the combustion position to the fire extinguishing position, and the oil combustor automatically extinguishes the fire.

[0033]

The present invention has the above configuration and operation, and the ignition position by the discharge spark is set at a position where the combustion wick 4 is raised higher than the maximum combustion position for normal combustion. The air circulation section below the spark can be configured widely, and the power supply dropped below a predetermined voltage makes it possible to reliably ignite even when the energy obtained from the discharge spark is small. An oil combustor equipped with an ignition device using 5.5a was first commercially available.

The opening / closing structure of the igniter switch 7 is configured so that the combustion wick 4 is closed between the position beyond the maximum combustion position and the maximum projecting position. Can be set independently, and the open position and the closed position of the igniter switch 7 are made the same by utilizing the return to the normal combustion range by the return spring 8 when the ignition operation is completed. In addition, the opening and closing structure of the igniter switch 7 is very simple, there are almost no adjustment points, and the manufacture is easy.

Further, since the range of normal combustion and the range of ignition operation can be set independently, when the ignition fails or when the combustion wick 4 instantaneously descends due to the force of the return spring 8 even if the ignition succeeds, it disappears. Even if this happens, the ignition operation can be performed immediately by operating the core up / down knob 6 again, so that the usability is greatly improved.

[Brief description of the drawings]

FIG. 1 is a front view of a main part showing an embodiment of a product of the present invention by lever operation.

FIG. 2 is a plan view showing a main part of the embodiment shown in FIG.

FIG. 3 is a sectional view of a main part of an oil combustor equipped with the product of the present invention.

FIG. 4 is an enlarged sectional view of a main part of a discharge electrode portion according to the present invention.

FIG. 5 is a plan view of a main part of a discharge electrode portion according to the present invention.

FIG. 6 is a front view of a main part showing another embodiment of the product of the present invention by lever operation.

FIG. 7 is a front view of a main part showing an embodiment of the product of the present invention using a dial knob.

FIG. 8 is a partially cutaway plan view of a main part of the embodiment shown in FIG. 7;

[Explanation of symbols]

 Reference Signs List 1 core inner cylinder 2 core outer cylinder 3 core vertical axis 4 combustion core 5 discharge electrode 5a discharge electrode 6 core up / down knob 7 igniter switch 8 return spring 9 rotating plate 9a locking part 10 locking part

Claims (1)

(57) [Claims] A core vertical shaft (3) between a core inner cylinder (1) and a core outer cylinder (2).
A discharge electrode 5.5a is attached to the combustion wick 4 exposed above the inner and outer cylinders 1, 2 by mounting the combustion wick 4 which moves up and down by the rotation of the wick. An igniter switch 7 that opens and closes when the knob 6 is operated, and a rotating plate 9 that rotates in cooperation with the core upper and lower knobs 6, and a return spring that drives the core vertical shaft 3 in the core lowering direction is provided on the rotating plate 9. The igniter switch 7, which is open at the fire extinguishing position of the core upper and lower knobs 6, is provided with a lock portion 10 for locking the rotating plate 9 against the return spring 8. When the wick 4 is raised, the circuit is closed and discharge sparks are generated from the discharge electrodes 5 and 5a. The igniter switch 7 is an oil burner that is opened after the ignition operation. To the maximum protruding position, which is higher than the maximum combustion position. A return spring 8 for raising the wick 4 and driving the wick vertical shaft 3 in the wick lowering direction stops the wick lowering operation at the maximum burning position of the wick 4 by the lock portion 10 and the igniter switch 7 extinguishes the fire. From the position, the open circuit is maintained between the maximum combustion position of the combustion wick 4 and the circuit is closed between the maximum combustion position and the maximum protrusion position, and the combustion wick 4 is returned between the maximum combustion position and the maximum protrusion position. Discharge electrode 5 while raising combustion core 4 against spring 8
A discharge ignition device for an oil combustor, wherein a discharge spark is generated from 5a.