JPH0129371Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Technical field of invention] The present invention relates to a wick device for a combustor.

[Technical background of the invention and its problems]

Fig. 1 shows the general structure of a conventional wick type combustor. In the figure, 1 is a fuel tank, a wick guide 2 protrudes from the inner bottom of the tank 1, and a guide cylinder 3 forms the outer periphery of the upper end of this wick guide 2. covered. Further, a burner basket 4 is disposed on the outer periphery of the upper end of the core guide 2, and a cap 5 is attached to the upper end surface of the core guide 2. The shaped fire pan 6 is formed into an annular shape. On the outer periphery of the wick guide 2 is a cylindrical wick 7 made of non-combustible fiber.
are fitted to be able to move up and down, and the outer periphery of the lower half of the lamp wick 7 is covered with a reinforcing tube 8 made of a thin metal plate.
This reinforcing tube 8 is integrally connected to the lamp wick 7. A cylindrical wick holder 9 is fitted onto the outer periphery of this reinforcing tube 8, and this wick holder 9 holds the lamp wick 7.
is retained. As shown in FIG. 2, engagement holes 10, 10 are formed in the circumferential surface of the reinforcing tube 8, respectively, and are located on opposite sides, and the lamp wick 7 has holes 10, 10 opposite to the engagement holes 10, 10. openings 11, 11
is formed with a notch. In addition, on the circumferential surface of the lead holder 9, as shown in FIG.
Engagement windows 12, 12 are formed opposite to 10, and engagement pieces 13, 13 are provided corresponding to these engagement windows 12, 12. These engaging pieces 13, 13 are made of an elastic plate material, one end of which is fixed to the core holder 9, and the other end of which has engaging claws 14, 14.
is formed. The upper edges of these engaging claws 14, 14 are inclined downward toward the tip, and due to the elasticity of the engaging pieces 13, 13, they protrude inside the lead holder 9 through the engaging windows 12, 12, and this protrusion causes the reinforcing cylinder to 8, and the wick holder 9 and the lamp wick 7 are integrally connected by this engagement.

A rack (not shown) is provided on the outer periphery of the wick holder 9, and the rack meshes with a pinion provided on the operating shaft, so that the wick 7 and the wick holder 9 are integrally moved into the wick guide 2 by rotating the operating shaft. It is something that goes up and down along the way. Further, although not shown, a combustion cylinder is removably mounted on the fire pan 6.

At the start of combustion, the lamp wick 7 is lifted so that its upper end protrudes into the fire pan 6, and the upper end is ignited. With this ignition, the liquid fuel in the fuel tank 1 is sucked up through the lamp wick 7 and vaporized sequentially from the upper end of the lamp wick 7, and combustion continues with the vaporized gas. In addition, when extinguishing the fire, the wick is lowered and its upper end is immersed below the fire pan 6.

Incidentally, kerosene is generally used as a fuel for this type of combustor, but kerosene may be contaminated with other types of oil due to insufficient storage container management, or the kerosene itself may deteriorate due to long-term storage. If some of the kerosene has deteriorated and such impure kerosene is used, tar will adhere to the upper end of the wick 7, resulting in poor combustion, poor lifting and lowering movement of the wick 7, and poor extinguishing. . Therefore, in such a case, remove the wick 7 using the wick attachment/detachment tool 15, and
replace it with a new one. The wick attachment/detachment tool 15 is integrally formed of a thin metal plate into a U-shape having tongues 16, 16 at both ends, and the cross section of each tongue 16, 16 is in the shape of an arc corresponding to the outer peripheral curved surface of the wick holder 9.

To explain the procedure for removing the wick 7 using this wick attachment/detachment tool 15, as shown in FIG. It is inserted between the reinforcing tube 8 and the wick holder 9 through the gap a between the lamp wick 7 and the guide tube 3. Along with this, the respective engaging claws 14, 14 are pressed by the tip edges of the tongue pieces 16, 16 and disengaged from the engaging holes 10, 10, and the lead holder 9 and the reinforcing cylinder 8 are disengaged. In this state, the reinforcing tube 8 is held between both tongue pieces 16, 16, and the lamp wick 7 is
is pulled out from the outer periphery of the core guide 2 together with the reinforcing cylinder 8.

After pulling out the wick 7, discard it and
A new lamp wick 7 is again held between the wick attachment/detachment tool 15 or directly held with fingers and inserted into the outer periphery of the wick guide 2. At this time, if the insertion position of the lamp wick 7 is appropriate, that is, if the engagement hole 10 is arranged corresponding to the engagement claw 14, the engagement hole 10 will be aligned with the engagement claw as the lamp wick 7 is inserted. 14, the lamp wick 7 is integrally connected to the wick holder 9. However,
If the insertion position is incorrect, the engaging claw 14 will only be pressed by the peripheral wall surface of the reinforcing cylinder 8, and the wick 7 will be inserted without the engaging hole 10 and the engaging claw 14 engaging. . Even in this state, the lower end of the lamp wick 7 is placed inside the wick holder 9, so that the lamp wick 7 can rise integrally with the wick holder 9 at the time of operation to start combustion. however,
Even if the wick holder 9 is lowered when extinguishing a fire, since the engaging hole 10 and the engaging claw 14 are not engaged, the wick holder 9 will only be lowered and the wick 7 will not be lowered, which will prevent combustion. will continue as is, resulting in a situation where the fire cannot be extinguished.

In recent years, combustors such as stoves have been equipped with earthquake-sensing mechanisms, which automatically extinguish the fire in the event of an earthquake or when the appliance topples. If the lamp wick 7 is installed incorrectly, the extinguishment will not be achieved, resulting in unexpected danger. In addition, even when extinguishing a normal fire, one-touch operation has recently become popular, so it is rare for people to go out or go to bed without checking whether the fire has actually been extinguished. , and therefore equally dangerous.

[Purpose of invention]

The present invention has been made with attention to these points, and its purpose is to provide a wick device for a combustor that prevents the wick from being installed in the wrong state.

[Summary of the idea]

The present invention consists of a cylindrical wick holder that can be raised and lowered, a lamp wick that is inserted into the inner periphery of the wick holder so as to be able to be raised and lowered and has a reinforcing tube on the outer periphery, and an engagement tube formed on the circumferential surface of the reinforcing tube. a hole, an engaging pawl that is provided on the wick holder and elastically projects toward the inner circumference of the wick holder so that it engages and disengages from the engaging hole in response to the lifting and lowering movements of the wick, and a lower end edge of the reinforcing tube. The device includes an inclined pressing portion formed in a part and a stopper provided on the lead holder and elastically protruding toward the inner circumferential side of the lead holder, and the pressing portion and the stopper correspond in position. When the lamp wick descends under such conditions, the stopper is pressed by the pressing portion and its descent progresses so that the engagement hole engages the engagement claw, and when they are not facing each other, The lower end edge of the reinforcing tube abuts against the stopper to prevent the wick from descending.

[Example of idea]

An embodiment of the present invention will be described below with reference to FIGS. 4 and 5. In this embodiment, the same parts as those in the conventional configuration are given the same reference numerals and the explanation thereof will be omitted.

A through hole 21 is bored on the circumferential surface of the core holder 9,
An elastic plate 22 is provided at a portion corresponding to the through hole 21. The elastic plate 22 has a lower end fixed to the outer peripheral surface of the lead holder 9, and has a stopper 23 at the upper end. This stopper 23 is formed into a substantially triangular shape with a horizontal upper edge and an inclined lower edge, and has an elastic plate 22.
Due to the elasticity of the lead holder 2, the lead holder 9 elastically protrudes into the inside of the lead holder 9 through the through hole 21.

A pressing portion 24 is formed on a part of the lower edge of the reinforcing tube 8 attached to the outer periphery of the lower half of the lamp wick 7 .
This pressing portion 24 is formed by cutting and raising a part of the peripheral wall material of the reinforcing tube 8 inward and making it inclined. And this pressing part 24
corresponds to the stopper 23, the engagement hole 1
0 corresponds to the locking claw 14.

When the wick 7 is attached to the wick holder 9, the pressing portion 24 is aligned with the position of the stopper 23, and in this state the wick 7 is lowered along the wick guide. With this descent, the pressing part 24 comes into contact with the tip of the stopper 23 as shown in FIG. As a result, the lamp wick 7 continues to descend,
It is placed inside the core holder 9. Immediately before the lamp wick 7 is placed in place, the engaging hole 10 engages with the engaging claw 14, whereby the lamp wick 7 is integrally connected to the wick holder 9, and is properly mounted.

On the other hand, if the insertion position of the lamp wick 7 is incorrect, that is, if the engagement hole 10 does not correspond to the arrangement position of the engagement claw 14, in other words, the pressing part 24 corresponds to the arrangement position of the stopper 23. Otherwise, when the wick 7 descends, the lower edge of the reinforcing tube 8 comes into contact with the horizontal upper edge of the stopper 23, as shown in FIG. 5b, and this contact prevents the wick 7 from further descending. As a result, the upper end of the wick 7 protrudes greatly above the fire pan, leaving a portion of the reinforcing tube 8 facing the fire pan.This unnatural appearance makes it difficult to install the wick 7. Even if the ignition heater is inserted into the fire pan after performing the ignition operation, the ignition heater will come into contact with the wall of the metal reinforcing cylinder 8 and actual ignition will not be achieved. This also allows us to know if it is inappropriate. For this reason, the worker has to correct the incorrectness of the lamp wick 7 and install the lamp wick 7 in the proper state according to the above-mentioned procedure, and therefore the lamp wick 7 is left in the incorrectly installed state. There is no such thing.

By the way, if the protrusion length _l1 of the stopper 23 is too short, regardless of whether the insertion position of the lamp wick 7 is appropriate or not,
In either case, the lamp wick 7 will be allowed to descend; on the other hand, if it is too long, the lamp wick 7 will be prevented from descending in either case, and the depth l ₂ of the pressing part 24 is too shallow. In either case, the lowering of the lamp wick 7 is prevented, and if it is too deep, there is a risk that the edge of the pressing part 24 may get caught on the wick guide inside the lamp wick 7, so the length l ₁ is set to 1.0 to 1.0.
3.5 mm, and the depth _l2 is preferably about 1.0 to 4.5 mm.

[Effect of idea]

As explained above, according to the present invention, there is no possibility that the lamp wick is installed in the wrong state and left as it is, and therefore there is no danger that the actual extinguishment will not be achieved when extinguishing the fire, unlike in the conventional case. This has the effect of being able to reliably prevent such a situation and maintain safety without causing such a situation.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view showing the structure of a conventional wick type combustor, Figure 2 is an exploded perspective view of the wick and reinforcing tube in the combustor, and Figure 3 is a perspective view of the wick and wick holder. 4 is an exploded perspective view showing an embodiment of the present invention, and FIG. 5 is a sectional view for explaining the operation of the embodiment. 7... Light wick, 8... Reinforcement tube, 9... Wick holder, 10... Engaging hole, 14... Engaging claw, 23...
Stopper, 24... Pressing part.

Claims (1)

[Scope of utility model registration request] A cylindrical wick holder that can be raised and lowered, a lamp wick that is inserted into the inner periphery of the wick holder so as to be able to be raised and lowered and has a reinforcing tube on the outer periphery, an engagement hole formed in the circumferential surface of the reinforcing tube, and the above-mentioned An engaging pawl is provided on the wick holder and elastically protrudes toward the inner circumference of the wick holder to engage and disengage from the engaging hole as the wick moves up and down, and is formed on a portion of the lower edge of the reinforcing tube. and a stopper provided on the lead holder and elastically protruding toward the inner circumferential side of the lead holder, the pressure part and the stopper being in a positionally corresponding position. When the wick is lowered, the stopper is pressed by the pressing portion and the lowering progresses, so that the engaging hole engages with the engaging claw,
Similarly, the wick device for a combustor is characterized in that when the reinforcing tubes are not facing each other, the lower edge of the reinforcing tube comes into contact with a stopper to prevent the wick from descending.