JPH0223985Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an ignition system for oil-burning appliances. Conventionally, this type of ignition system involves tilting the combustion tube that covers the upper end of the combustion wick to expose the combustion wick. After ignition, the combustion tube was ignited using a desired igniter, so when the combustion tube was returned to its original position after ignition, it was easy to get into a so-called awkward state where the combustion tube did not return to its original position. The defect caused abnormal combustion and the generation of soot immediately after ignition.

In order to prevent this, in recent years, so-called static ignition ignition devices have been provided that ignite without lifting the combustion tube. An ignition window hole is drilled, and this ignition window hole is opened and closed by a shutter plate that rotates with the rotation of the rod, and the ignition heater is approached from the front through the opened ignition window hole to ignite it. It was hot.

However, with this configuration, the structure for rotating the shutter plate is complicated, and a large space is required for the rotation operation, and the ignition heater's wick must be approached horizontally from the front. However, it had the disadvantage that the air required for ignition did not flow smoothly.

This idea focuses on this point and eliminates the above drawbacks,
It is an object of the present invention to provide an ignition device for an oil-burning appliance that has a simple structure, is space-saving, and can always perform smooth ignition.

Next, a preferred embodiment of the ignition device for an oil-burning appliance according to this invention will be described as shown in the drawings.

1 is a core guide tube consisting of a hollow pipe-shaped core guide tube 2 and an outer core guide tube 3;
A combustion wick 4 that can move up and down is provided between 3 and 3. Reference numeral 5 denotes a double-tube type combustion cylinder consisting of an inner cylinder 8 with a large number of small holes 6, 7 in the peripheral wall, a middle cylinder 9, and an outer cylinder 10 without small holes, which is formed at the upper end of the core guide inner cylinder 2. The inner cylinder 8 is placed on the fire pan 11, and the combustion wick 4 is placed between the inner cylinder 8 and the inner cylinder 8.
The middle cylinder 9 is placed on the fire pan part 12 at the upper end of the wick guide outer cylinder 3, and the outer cylinder 10 is placed on the guide plate 13 fixed to the outer periphery of the fire pan part 12, with a gap between the core guide outer cylinder 3 and the outer cylinder 10. It is removably located on the tube 1.

14 is fixed to a proper position on the peripheral wall of the core guide tube 1 and the combustion tube 5
This is an ignition device that can ignite the wick 4 without lifting the wick guide outer cylinder 3 below the fire pan 12.
A horizontally long outer frame 15 whose one end is fixed to a peripheral wall, and an ignition window 1 formed in a fire pan 12 between a fuel wick 4 and a middle cylinder 9, which are swingably provided just below the upper surface of the outer frame 15.
The shutter plate 17 opens and closes the shutter plate 6 at its tip, and swings vertically in an inverted dogleg-shaped swing groove 19 formed at the rear of the shutter plate 17, the connecting rod 18, and both sides of the outer frame 15. an actuation plate 22 that is connected via a swing shaft 20 and horizontally moves the shutter plate 17 by rotating around a support shaft 21 that pivotally supports the rear part;
A correction groove 23 formed at the rear of the swing shaft 20 is pivotally supported, and the frame body 1 has an intermediate portion parallel to the swing groove 19.
5. A guide groove 24 formed on both side walls is pivotally supported by a guide groove 25 that moves up and down, and an ignition heater 26 is installed at the tip.
The heater holding plate 27 and the like move up and down in conjunction with the actuating plate 22.

The ignition heater 26 is made of ceramic and has a flat shape, and includes a red-hot coil 30 installed between conductive rods 29 in a recess 28 formed in the center of the upper part.

Further, the operating plate 22 connects the bottom of the swing shaft 20 with an ignition lever (not shown) provided on the front surface of the instrument body (not shown) via a swingable interlocking mechanism 31.

Reference numeral 32 indicates a gap between the ignition device 14 from below to the inside and between the ignition device 14 and the outer wall of the wick guide outer cylinder 3 and Ignition heater 2
6 and the ignition window hole 16 to supply ignition air to the upper end of the ignition wick 4 using natural convection of hot air from below to above. be.

33, the shutter plate 17 is always connected to the ignition window hole 16.
This is a spring that presses in the direction of opening.

34 is a spring member that always presses the heater holding plate 27 downward, which is the standby position.

35 is in contact with a contact plate 36 provided in the outer frame 15 through ignition operation, and conducts with the actuation plate 22 and the heater holding plate 27 to form a closed circuit of a DC power source that makes the ignition heater 26 red-hot. It is a contact point provided.

Next, the operation of this embodiment of the invention will be explained. Now raise the combustion wick 4 to the inside of the combustion tube 5. If you operate the ignition lever to operate the middle cylinder, the interlocking mechanism 31
, one end of the actuating plate 22 is pushed up, the actuating plate 22 rotates about the support shaft 21, and the rotation of the actuating plate 22 causes the swing shaft 20 to move upward in the swing groove 19. At the same time, one end of the connecting rod 18 connected to the swing shaft 20 also rises. Therefore, as one end of the connecting rod 18 rises, the other end moves in the horizontal direction, and the fixed shutter plate 17 is simultaneously moved by the spring. 33 to open the normally closed ignition window hole 16.

On the other hand, the heater holding plate 27 whose rear portion is pivotally supported by the swing shaft 20 is fixed by the shutter plate 17 at the time when the swing shaft 20 has fully ascended the correction groove 23 at the rear overlapping with the swing groove 19. After the ignition window hole 16 has already been opened, it starts to rise with a time lag, and is guided to the swing shaft 20 that moves upward in the swing groove 19 and the guide shaft 25 that moves upward in the guide groove 24. The ignition heater 26, which is held at its tip, rises against the pressing force of the spring material 34 and passes through the opened ignition window hole 16, and approaches the upper end of the wick 4.
The coil 30 becomes red hot when the DC circuit is closed between the contact plate 36 and the contact 35 that come into contact with the actuating plate 22 mid-rotation.
At this time, the outer periphery of the wick guide tube 1 equipped with the ignition device 14, which becomes hollow due to the upward movement of the operating plate 22 and the heater holding plate 27, the ignition heater 26, and the ignition window. A vertical air flow passage 32 extending from the bottom to the top, consisting of a gap with the hole 16
The ignition air that is supplied to the ignition part of the wick 4 flows from the bottom to the top, which is generated when the temperature of the ignition part rises due to red heat from the ignition heater 26.
The draft effect of natural convection allows the fuel to be smoothly supplied to the ignition section, thereby speeding up ignition.

Furthermore, since the ignition heater 26 rises along the outer periphery of the wick 4 from the ignition window hole 16 to the ignition part at the upper end of the wick 4, the ignition heater 26 promotes vaporization of the fuel on the upper part of the wick 4 during this time. In combination with air circulation, the ignition speed can be further increased, and good ignition can be achieved without lifting the combustion tube 5.

In addition, the ignition window 16 is closed by the shutter plate 17 except when igniting, and the ignition heater 26 is normally located below the fire pan 12, which is closed by the shutter plate 17. ,
There is no fear that the ignition heater 26 will be heated and burned out by the heat generated by combustion, and the ignition heater 26 can always operate reliably at the time of ignition.

Furthermore, since the shutter plate 17 moves horizontally to open and close the ignition window 16, it has a simple structure and operates reliably without complicated movements, and it also takes up less space. It is something that can be done.

On the other hand, after ignition, by releasing the ignition lever, the shutter plate 17, actuating plate 22, and heater holding plate 27 automatically return to their original positions by the return force of the spring 33 and spring material 34. In short, this invention is based on the idea that a dual-tube type combustion tube 5 is placed on the fire pans 11 and 12 of the wick guide tube 1 in which the combustion wick 4 is housed in a vertically movable manner.
The inner cylinder 8 and the middle cylinder 9 are placed, and among these, the middle cylinder 8,
In the case where the upper end of the wick 4 protrudes from the lower part of the ignition hole 16, an ignition window hole 16 is formed at an appropriate position in the fire pan 12 between the upper end of the wick 4 and the middle tube 9. A shutter plate 17 that opens and closes the ignition window hole 16 is connected to the shutter plate 17 via a connecting rod 18 and rotates about a support shaft 21, thereby horizontally moving the shutter plate 17 to close the ignition window hole. 16
An actuating plate 22 that opens and closes, and moves up and down in conjunction with the rotation of the actuating plate 22, allowing the ignition heater 26 held at the tip to approach the upper end of the fuel wick 4 from below through the opened ignition window hole 16. The ignition heater 2
6 is located below the fire pan 12 except during ignition, and an air flow passage 32 is formed between the ignition point ignition heater 26 and the ignition window hole 16 through which ignition air flows from below to above. Since the ignition device provides an ignition device, the ignition operation does not involve lifting the combustion tube, which not only completely prevents the combustion tube from sitting improperly, which has caused abnormal combustion and soot, but also improves combustion during ignition. The air flow path that supplies ignition air to the ignition part at the top of the wick is formed from below the fire pan, passing through the gap between the ignition window hole and the ignition heater, from below to above. The draft effect that occurs allows air to circulate smoothly from below, and the ignition heater that rises along the periphery of the fuel core accelerates the vaporization of the fuel, increasing the ignition speed and ensuring reliable ignition. , a good ignition effect is always achieved.

Furthermore, the ignition window hole is always opened by the shutter plate except when igniting, and the ignition heater is usually located below the fire pan, so it is not affected by heat from combustion, and malfunction due to burnout. It can be used with confidence at all times without having to worry about causing damage.

In addition, since the shutter plate opens and closes the ignition window hole by horizontal movement, there is no problem such as complicated structure or movement, which is expensive or has many malfunctioning parts, and the structure is simple and inexpensive, and there is no need to worry about breakdowns. Without,
Furthermore, it has the advantage of requiring only a small operating space.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of an ignition device showing an embodiment of this invention, FIG. 2 is a cross-sectional view showing the same operating state, and FIG. 3 is a plan view of the main part of the same with the combustion tube removed. 1... Core guide tube, 4... Fuel core, 5... Combustion tube,
8... Inner cylinder, 9... Middle cylinder, 11, 12... Fire pan, 16... Ignition window hole, 17... Shutter plate, 18... Connection rod, 22... Operating plate, 26... Ignition Heater, 27... Heater holding plate, 32...
air flow passage.

Claims (1)

[Scope of utility model registration request] The inner cylinder 8 of the double-tube type combustion cylinder 5 is placed on the fire pans 11 and 12 of the wick guide cylinder 1 which houses the combustion wick 4 in a vertically movable manner.
and a middle cylinder 9 are mounted, in which the upper end of the fuel wick 4 protrudes below the space between the middle cylinders 8 and 9 to perform combustion. An ignition window hole 16 is formed in the appropriate position of the fire pan 12, and a shutter plate 17 that opens and closes the ignition window hole 16 is connected to the shutter plate 17 via a connecting rod 18 and rotates about a support shaft 21. As a result, the actuating plate 22 horizontally moves the shutter plate 17 to open and close the ignition window hole 16, and the actuating plate 22 moves up and down in conjunction with the rotation of the actuating plate 22 to open the ignition heater 26 held at the tip. It consists of a heater holding plate 27, etc., which is ignited by approaching the upper end of the wick 4 from below through the ignition window hole 16, and the ignition heater 26 is located below the fire pan 12 except when igniting. This ignition device for an oil-burning appliance is characterized in that an air flow path 32 is formed between the heater 26 and the ignition window 16, through which ignition air flows from below to above.