JPH0120329B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Technical Field> The present invention relates to an ignition device for a liquid fuel combustor such as a top-and-bottom kerosene stove.

<Prior art> As shown in Fig. 6, the conventional ignition device for a kerosene stove with a top-and-bottom wick has an ignition device body made of a heat-resistant insulating material (ceramics) in which a pair of electrodes 2 having an ignition heater 1 made of platinum Hilament built in is built into the upper part. 3 is the core outer cylinder 4
The lower part of the electrode 2 is placed on the upper flange 5, and the lower part of the electrode 2 is passed through the lower side of the upper flange 5. A vertical hole 3b is formed in the protrusion 3a on both left and right sides of the main body 3, and the electrode 2 is inserted through the vertical hole 3b. The ignition device was fixed to the upper flange 5 by tightening the lower part of the fixed screw 6 to the lower nut 6a of the upper flange 5.
However, the diameter of this screw 6 is extremely small, such as 1 to 2 mm, and even if an attempt is made to remove this screw for replacement or repair, ordinary households often do not have the tools to remove the tiny screw, and the ignition heater 1 It is difficult to adjust the core gap to the optimum value, and furthermore,
Since the ignition heater 1 of the ignition device is of a fixed type, when the wick becomes old or becomes thin due to tar adhesion, the gap between the wick and the ignition heater 1 becomes large, and ignition may become impossible.

<Purpose> Therefore, an object of the present invention is to provide an ignition device that can adjust the gap between the wick and the ignition heater with an extremely simple and easy operation, and can maintain and guarantee ignition performance.

<Example> Hereinafter, the first example of the present invention will be described based on FIGS. 1 and 2. In this, a heat-resistant insulating material ( An igniter body 3 made of, for example, Ceramitex) and a support device A that supports the lower part of the body 3, the body 3 being penetrated by a mounting hole 6 formed in the upper flange 5 of the outer core cylinder 4,
The support device A includes a case 11 that accommodates and holds the lower part of the main body 3 outside the core outer cylinder 4, and an engagement piece 7 formed in a part of the case 11. , when the engaging piece 7 engages with the engaged portion of the outer core cylinder 4, it can swing freely around the horizontal axis centered on the engagement point, and the case 11
An adjusting threaded rod 8 is provided for adjusting the gap between the ignition heater 1 and the combustion wick C by adjusting and swinging the ignition heater 1 around the horizontal axis.

Next, the structure of the main body of the ignition device will be explained with reference to FIGS. 3 and 4. The ignition device includes a main body 3 made of heat-resistant insulating material made of ceramics, and an ignition heater made of platinum filament disposed in the upper recess of the main body 3. 1
, a pair of electrodes 2 whose upper ends are connected to the ignition heater 1 and penetrated into the electrode holes 3c of the main body 3, an elastic connecting piece 2a whose lower end is bent to prevent the electrodes 2 from coming off after the penetration, and the main body 3. It is composed of a heater guard 1a whose legs are fitted into the left and right protrusions 3a of the heater guard 1a, and a support device A. The main body 3 of this ignition device is inserted from above into a sector-shaped attachment hole 6 in a plan view of the upper flange 5 of the outer core cylinder 4.

Next, according to FIGS. 1, 2, 5, and 6, the support device A
To explain this, a socket base 9 is fixed to the approximate center of the side wall of the core outer cylinder 4 by rivets or welding, and a compression spring 10 with an inclined upper end surface 10a is connected to a nut 9a at the top of the base 9. a socket case 11 which is adjustable with an adjustment screw rod 8; a mica insulating material 12a inserted into the bottom of the case 11; a pair of socket tabs 13 whose rear parts are inserted into the case 11; This tab 1
It is composed of a ceramic socket insulator 12b for fixing the socket 3 to the case 11, and the engaging piece 7. The engagement piece 7 is attached to the rear wall 1 of the case 11.
It is formed in the center of the mounting hole 1a, and is engaged with the lower end periphery of the mounting hole 6 as an engaged portion. 1st,
As shown in Fig. 7, the lower part of the main body 3 is press-fitted and fixed between the rear wall 11a of the case 11 and the rear end 13a of the tab 13 by elastic deformation of the connecting piece 2a of the electrode 2, and thereby the electrode 2 and the tab 13 are connected. are electrically connected.

As shown in FIG. 8, a lead wire 13c with a faston is connected to the front end 13b of the tab 13, thereby connecting the ignition heater 1 to an ignition switch and a dry battery.

Furthermore, the engaging piece 7 of the case 11 is formed with a retaining part 7a that is larger than the left and right width of the mounting hole 6 as shown in FIG. be done. Furthermore, as shown in FIG. 6, the side stepped portion 1 of the insulator 12b
2e is the side wall claw 11b of the case 11 and the insulator 12b.
The insulator 12 is bent and formed after being inserted into the insulator 12.
b is not removed. 12c, 12d, 11d are socket insulator 12b, insulating material 12a, case 1
1, each of which is a hole for an adjustment screw rod.

In the figure, C is a core that rises and lowers inside the outer core tube 4, 14 is an inner core tube that guides the inside, 15 is a core top that closes the upper part of the inner core tube 14, and 16 is a burner tube. It is composed of an internal disaster tube 16a placed on the outer periphery of the core top 15, an external disaster tube 16b placed on the upper flange 5 of the core outer tube 4, and its cover (not shown).

Next, the adjustment method will be explained with reference to FIGS. 1 and 9. To widen the gap D between the wick C in the raised state and the ignition heater 1, turn the adjusting screw rod 8 in the tightening direction, and tighten the lower surface of the head 8a. The upper surface of the socket insulator 12b is pressed against the compression spring 10.
Then, the socket case 11 and the main body 3 of the ignition device are integrally connected to the engagement piece 7 and the mounting hole 6 of the core outer cylinder 4.
The gap D swings away from the core C around the horizontal axis formed by the point of contact with the periphery of the core C, and the gap D widens. Conversely, when the gap D is to be reduced, the adjustment threaded rod 8 can be turned in the loosening direction. Then, the socket case 11 and the main body 3 of the ignition device are pushed up together by the compression spring 10, swinging toward the core C side, and the gap D is reduced. Note that the adjustment screw rod 8 is a compression spring 10.
Due to this action, it will not rotate unexpectedly during use.

Next, a second embodiment of the present invention will be described with reference to FIG.
is fixed, and the upper engagement piece 7 of the case 11 fixed to the ignition device main body 3 is swingably engaged with the engagement hole 22 as an engaged part of the support plate 21, and the lower end of the case 11 is portion 11c and the lower end portion 21 of the support plate 21
A tension spring 23 is tensioned between the adjustment screw rod 8 and the adjustment screw rod 8 screwed into the screw hole 11d in the center of the case 11.
The tip of the support plate 21 is in contact with the support plate 21. Therefore,
Also in this second embodiment, the dimension E between the case 11 and the support plate 21 changes due to the adjustment rotation of the adjustment screw rod 8, so the gap D between the wick C and the ignition heater 1 changes.
can be adjusted.

It should be noted that the present invention is not limited to the configuration of the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

<Effects> As is clear from the above description, the present invention provides an ignition device for a liquid fuel combustor for igniting a combustion wick that moves up and down inside a wick outer cylinder, in which a pair of electrodes having an ignition heater in the upper part is built-in. an ignition device main body made of a heat-resistant insulating material, and a support device supporting a lower part of the main body, the main body being penetrated through a mounting hole formed in the upper flange of the outer core cylinder, and the support device The case includes a case that stores and holds the lower part of the main body outside the core outer cylinder, and an engagement piece formed in a part of the case, and the case has a case that the engagement piece is engaged with the outer core cylinder. an adjustment screw that is able to swing freely around a horizontal axis centered on the engagement point by engaging with the joint portion, and adjusts the gap between the ignition heater and the combustion wick by adjusting and swinging the case around the horizontal axis; It is equipped with a rod.

Therefore, according to the present invention, the gap between the wick and the ignition heater can be adjusted with an extremely simple and easy operation by adjusting and rotating the adjusting screw rod, and the ignition performance can be maintained and guaranteed, which is an excellent effect. .

[Brief explanation of drawings]

Fig. 1 is an overall longitudinal sectional view showing a first embodiment of the ignition device of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a longitudinal sectional front view of the main body of the ignition device, and Fig. 4 is a longitudinal sectional side view thereof. , FIG. 5 is a cross-sectional plan view of the support device part of the ignition device, FIG. 6 is a longitudinal sectional front view thereof, FIGS. 7 and 8 are views each illustrating the assembled state, and FIG. 9 is a perspective view illustrating the gap adjustment state. , FIG. 10 is a vertical sectional view of a main part of a second embodiment of the ignition device of the present invention, and FIG. 11 is an exploded perspective view of the conventional ignition device. 1: Ignition heater, 2: Electrode, 3: Ignition device body, 4: Core outer cylinder, 5: Upper flange, 6: Mounting hole,
7: Engagement piece, 8: Adjustment screw rod, A: Support device,
9: socket base, 9a: nut, 10: compression spring, 11: socket case, 12b: socket insulator, 13: socket tab.

Claims (1)

[Claims] 1. In an ignition device for a liquid fuel combustor for igniting a combustion wick that moves up and down inside a wick outer cylinder, the ignition device body is made of a heat-resistant insulating material and has a built-in pair of electrodes with an ignition heater in the upper part; a support device for supporting a lower part, the main body is penetrated through a mounting hole formed in an upper flange of the outer core cylinder, and the support device stores and holds the lower part of the main body on the outside of the outer core cylinder. The case includes a case and an engagement piece formed in a part of the case, and the case is configured such that when the engagement piece engages with the engaged portion of the outer core cylinder, the engagement point is centered. A liquid fuel combustor is provided with an adjustment threaded rod that is swingable around a horizontal axis to adjust the gap between the ignition heater and the combustion wick by adjusting and rocking the case around the horizontal axis. igniter.