JPS6056976B2 - liquid fuel combustor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid fuel combustor, and more particularly to an improvement in its wick-dropping shutoff type fire extinguishing mechanism.

In a liquid fuel combustor such as a kerosene stove with a vertically moving lamp wick, the wick is usually raised to burn by rotating a dial, and the wick is lowered to extinguish the fire. When the wick is manually operated in this way, the wick descends relatively slowly when extinguishing the fire, and as the fire is extinguished gradually, there is almost no problem with standing flames when the fire is extinguished. On the other hand, when burning, the shielding plate opens in conjunction with the rise of the wick, and when extinguishing, the shielding plate is closed in conjunction with the lowering of the wick, and when extinguishing, the lowering of the wick and the closing operation of the shielding plate are controlled by the wick. In the case where the return spring force is stored during the rise of the fire, flames are likely to occur when extinguishing the fire.

In other words, in such appliances, the shutoff mechanism is installed in the burner basket that covers the wick, so vaporized gas tends to accumulate in the storage space during combustion, and in this state, when the wick is extinguished, the wick is returned by the return spring. When the lamp wick descends rapidly, the vaporized gas in the storage space of the shutoff mechanism suddenly rushes toward the combustion section due to the instantaneous negative pressure generated by the rapid descent of the wick and the draft force of the high-temperature combustion section. In addition to the fact that the pressure inside the tank increases rapidly due to the rapid descent of the wick,
The rate of discharge of vaporized gas increases, and the amount of vaporized gas exceeds the combustion rate, which causes a large flame to be generated during extinguishing the fire, which is undesirable from the standpoint of danger, odor generation, and the like. The present invention has been made in view of these points, and is designed to apply braking to the descent of the wick in the initial stage of descent of the wick,
It is an object of the present invention to provide a liquid fuel combustor in which the wick is lowered and shut off reliably without any standing flame by changing the wick lowering speed in stages.

The present invention also provides a fixed tank, a wick holder provided on the fixed tank so as to be horizontally rotatable and vertically movable, a lamp wick held in the wick holder, and a lamp holder located on the outer peripheral side of the lamp wick. a burner basket fixed on the fixed tank; a guide plate attached to the inside of the burner basket and provided with a rising wall for the lamp wick;
a drive disk that is horizontally rotatably held by the guide plate and engaged with the core holder via a slide pin;
It has a drive shaft that engages with the drive disk, and is located on the outer circumferential side of the rising wall of the guide plate and is housed between the burner basket and the lamp wick after the lamp wick is lowered. The guide plate and the drive are provided with a shielding plate that moves inward through a gap provided in the rising wall to perform a shielding operation, and a return spring that biases the lowering of the lamp wick and the closing of the shielding plate. A braking spring plate is attached to one side of one of the disks, and a protrusion for the spring plate is provided on the other side.

An embodiment of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a stationary tank formed in a substantially annular shape.A core guide tube 2 is welded to the inner peripheral side of the stationary tank 1 and is erected therein, and a fuel reservoir 3 is located below the core guide tube 2. will be established.

The lower part of the burner basket 4 is located on the outer peripheral side of the core guide cylinder 2 and fixed to the upper surface of the fixed tank 1, and the middle stage of the burner basket 4 is fixed to the upper surface of the fixed tank 1. Guide plate 5 on the inner circumference side
A rising wall 6 is provided above the inner peripheral side of the guide plate 5, and a wick 7 is interposed in the gap formed between the rising wall 6 and the wick guide tube 2. A braking splash plate 63 is attached to the inner circumferential wall of the lower part of the guide plate 5, and one end thereof is fixed. Provided under certain conditions.

A stepped core top 8 is attached to the upper end of the core guide tube 2,
A suitable number of circumferential holes 9 are bored in the upper circumferential wall of the core guide tube 2 at the circumferential side of the core 8, and a fire pan 10 is attached to the upper end of the burner basket 4. This hot plate 1
A two-tube type combustion tube 11 is removably mounted on the upper part extending between the lamp wick 7 and the lamp wick 7.

An auxiliary guide plate 12 is attached to the upper part of the inner circumferential side of the burner basket 4, located on the outer circumferential side of the rising wall 6 of the guide plate 5, and an auxiliary guide plate 13 is attached to the lower part of the inner circumferential side of the burner basket 4. Install.

The upper and lower auxiliary guide plates 12 and 13 have elongated holes 14,
15 are bored correspondingly, and a shielding plate 16 is provided around the outer circumferential side of the rising wall 6, located between the upper and lower auxiliary guide plates 12 and 13. This shielding plate 16 has an elastic 1
It is formed from a strip of steel or a plate, and has a finely movable end 17 on one end side and a drive end 18 on the other end side, and the drive end 18 has one end facing the one end side of the shielding plate 16. This corresponds to the other end of the fixed auxiliary shielding plate 19, and the drive shaft 20 is fixed along this drive end.

The upper protrusion of this drive shaft 20 is connected to the upper auxiliary guide plate 1.
2, and is loosely fitted into the long hole 14 in the drive shaft 20.
The lower part is the elongated hole 15 in the lower auxiliary guide plate 13.
It is loosely fitted in and extends downward. On the other hand, a driven shaft 21 is attached to the fine movable end 17, and this driven shaft 2
The vertically protruding portion 1 is connected to the upper and lower auxiliary guide plates 12 and 13.
It is loosely fitted into small elongated holes 22 and 23 that are bored corresponding to the holes 22 and 23, respectively.

Further, a gap 24 is provided between the lower end of the fire pan 10 and the upper end of the rising wall 6, located inside the upper end of the burner basket 4, through which the shielding piece 25 of the shielding plate 16 can move in and out. Form. Further, the lower part of the drive shaft 20 extending therethrough is fitted into the elongated hole 28 bored in the guide plate 5, and the lamp wick 7 is positioned below the guide plate 5.
A driving disk 29 is provided around the outer circumferential side of the guide plate 5 so as to be horizontally rotatable, and in this case, the guide hole 29a of the driving disk 29
The drive disk 29 is held by the guide plate 5 by fixing the guide pin 29b inserted through the guide plate 5, and
The lower part of the drive shaft 20 is also inserted into the elongated hole 30 formed in the drive disk 29. The long hole 30 of the driving disk 29 has a small hole part a and a long hole part b. A closing plate 26 is attached to prevent the flow of gas through the path.

Further, a protrusion 64 is provided on one side of the outer circumferential portion of the driving disk 29, and the protrusion 64 is adapted to partially abut against a braking spring plate 63 fixedly provided on the guide plate 5. be positioned.

Further, a wick holder 31 which is located below the driving disk 29 and holds the wick 7 on the outer circumferential side of the wick 7 is provided around the wick holder 31 so as to be horizontally rotatable and vertically movable. The lamp wick 7 is supported by the downwardly extending portion on the circumferential side, and the slide pin 33 fixed to the drive disk 29 is inserted vertically into the insertion hole 32 formed in the upper edge plate of the wick holder 31. The drive disc 29 and the lead holder 31 are movably inserted into the core holder 31 and the drive disc 29 is engaged with the lead holder 31.
The horizontal part 34 and the inclined part 35 are connected to each other via the rack base 39.
A rack 36 with

37 is an operating shaft, and a pinion 38 provided at one end of this operating shaft 37 is engaged with the rack 36, and
A roller 40 and an oil leakage prevention ring 41 are mounted on the operation shaft 37 and are in contact with the rack base 39 while pivotally supporting the operation shaft 37.
, the restraining washer 42, the retaining spring 43, and the bolt 44 having the guide hole 44a are sequentially inserted,
The operating shaft 37 is held within a vibrator 45 fixed to the fixed tank 1 via the roller 40 and bolt 44.

In addition, the locking pin 49 is mounted perpendicularly to the operating shaft 37 in this state, and the locking pin 49 is attached to the operating shaft 37 via a retainer 53 and a spring holder 47 on which a return spring 51 is wound on the inner circumferential side. The ratchet plate 46 around which the drive spring 48 is wound and the cover 55 are fitted in this order, and then the retaining ring 56 is fitted.

In this case, one end of the return spring 51 is locked to the suppressor 53, and the other end is locked to the winding edge of the fixed tank 1, and the ratchet plate 46 and the spring holder 47 and the drive spring 48 are attached to the protrusion 50 of the suppressor 53 by the cover 55 and retaining ring 56 so as to rotate simultaneously with the suppressor 53.

An operation dial 52 is provided at the end of the operation shaft 37.
is fitted. Note that the drive spring 48 is
One end thereof is locked to the peripheral edge of the cover 55.
Further, a vibration sensing device 58 is provided on one side of the fixed tank 1 via a base 57, and the vibration sensing device 58 is connected to a pendulum 5.
A locking piece 60 is provided which rotates around a locking piece shaft 60 in accordance with the movement of the locking piece 9, and this locking piece 61 is attached to the ratchet plate 4.
A fire extinguishing lever 62 is provided which meshes with the engagement teeth of No. 6 and is positioned in the interlocking process between the pendulum 59 and the locking piece 61.

In such a configuration, when the operating shaft 37 is rotated clockwise through the operating dial 52 during combustion use, the return spring 51 also rotates clockwise together with the operating shaft 37, and the reversing force of the return spring 51 causes the ratchet to rotate. The plate 46 also rotates clockwise while resisting the spring pressure of a spring (not shown) of the locking piece 61 in the vibration sensing device 58 and being prevented from reversing by the locking piece 61, and the spring 51 is gradually restored. The operating shaft 37 that rotates clockwise rotates the lead holder 31 clockwise via the horizontal portion 34 of the rack 36 with which its pinion 38 engages, and rotates the drive disk 29 clockwise via the slide pin 33.

As the drive disk 29 rotates clockwise, the drive shaft 20 is pushed by the small hole a in the elongated hole 30 of the drive disk 29, and the drive shaft 20 moves along each length of the auxiliary guide plates 12, 13 and the guide plate 5. It operates along the holes 14, 15, 28, thereby expanding the shielding plate 16 in the horizontal direction while moving the driven shaft 21 of the finely movable end 17 in the centrifugal direction along the small elongated holes 22, 23, The lamp wick 7 begins to open a passage for vertical movement. Then, when the pinion 38 of the operating shaft 37 is located halfway along the inclined part 35 of the rack 36, the shielding plate 16 finishes opening completely, and the lamp wick 7, which had already started to rise at this stage, moves away from the inclined part 35 of the rack 36. Due to the engagement of the pinion 38 with the remainder of the portion 35, the drive shaft 20 is raised to the home position against the force of the braking spring plate 63 that comes into contact with the projection 64 of the drive disk 29, and at the same time, the drive shaft 20 is driven. From the small hole part a to the long hole part b in the long hole 30 of the disk 29
Then, the drive disk 29 rotates idly.

If combustion is used in this state and some kind of vibration exceeds a certain degree during combustion, the pendulum 59 in the vibration sensing device 58 will swing, and the locking piece 61 will react with the locking piece shaft 60 as a fulcrum. Rotate clockwise and release the ratchet plate 4.
6 is released, the reversing force stored in the return spring 51 applies counterclockwise rotation to the operating shaft 37.

This counterclockwise rotation of the operating shaft 37 causes an operation in the reverse order of the operation during the above-mentioned combustion use, and the driving disk 2
The rotation transmitted to the elongated hole 30 idles in the elongated hole b of the elongated hole 30 and moves the drive shaft 20 in the centripetal direction at the small hole a of the elongated hole 30 while lowering the lamp wick 7.
After lowering, the blocking plate 16 closes the passage of the lamp wick 7.

In this case, when the lamp wick 7 is lowered, at the stage where the braking spring plate 63 of the guide plate 5 and the protrusion 64 of the drive disk 29 are in contact with each other, the return spring 51 is caused by the frictional resistance.
The reversing force is weakened and the descending speed of the wick 7 is slow, but when the protrusion 64 comes off the braking spring plate 63, the return spring 51 recovers the normal reversing force, and the wick 7 descends smoothly. The blocking piece 25 of the blocking plate 16 advances inward through the gap 24 and reliably closes the passage of the lamp wick 7. If you want to extinguish the fire in an emergency, push down the fire extinguishing lever 62 against the spring pressure of a spring (not shown), rotate the locking piece 61 counterclockwise around the locking piece shaft 60, and remove the latch plate. When the locking piece 61 is released from the locking member 46, the fire extinguishing action is performed through the same sequence as in the case of the operation of the seismic device 58 described above.

Note that when manually rotating the operating dial 52 to the left to adjust combustion or extinguish the fire, the operating shafts 3 and 7 and the locking pin 49 of the operating shaft 37 engage the protrusion 50 of the suppressor 53, which is a saw body. The cover 55 is engaged and has one end of the drive spring 48 secured to its peripheral edge.
Operation axis by operation dial 52 in mutually locked state! With the rotation of 37, it will rotate to the left.

Also, when rotating the operation dial 52 clockwise during combustion, the spring holder 4 of the drive spring 48
The tightening force against 7 overcomes the reversing force of the return spring 51 and acts as 3 to prevent counterclockwise rotation. According to the invention,
When extinguishing a fire, the wick is lowered by the force of the return spring and a shielding plate is closed over the wick to extinguish the fire. In the initial stage, braking is applied to the wick by the contact of the protrusion against the braking spring plate, and the descending speed of the wick is relatively slow. Therefore, the negative pressure generated by the descending of the wick is small,
The vaporized gas accumulated in the storage space of the shielding plate is gradually and slowly discharged through the opening and exiting gap of the shielding plate.
Since the vaporized gas is not sucked and discharged all at once, and a large amount of vaporized gas is not supplied at one time, a large standing flame is generated in a state close to natural, that is, the amount of ejected vaporized gas matches the combustion speed. When the protrusion passes through the braking spring plate and the blocking plate starts to close, the blocking plate receives a strong closing force from the return spring and quickly moves over the lamp wick. It is possible to block the fire and extinguish the fire reliably.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a partially cutaway front view of a liquid fuel combustor, Fig. 2 is a partially cutaway plan view, and Fig. 3 is a vertical cross-section thereof. Figure 4 is a partially cutaway cross-sectional view taken along figure 3 A-A'' when it is incinerated, and Figure 5 is a partly cut-away cross-sectional view taken along figure 3 A-N when it is extinguished. Fig. 6 is an exploded perspective view of a portion of the control unit with a portion thereof cut away, and Fig. 7 is an exploded perspective view of the operating section thereof. 1. Fixed tank, 4. Burner basket, 5.
Guide plate, 6...Rising wall, 7...Light wick, 16...Blocking plate, 20...Drive shaft, 24...Gap, 29...Drive section plate,
31... Core holder, 33... Slide pin, 51...
Return spring, 63...braking spring plate, 64...protrusion.

Claims (1)

[Claims] 1. A fixed tank, a wick holder provided on the fixed tank so as to be horizontally rotatable and vertically movable, a lamp wick held in the wick holder, and a lamp holder located on the outer circumferential side of the lamp wick and mounted on the fixed tank. fixed burner basket;
A guide plate attached to the inside of the burner basket and provided with a rising wall for the lamp wick, and a drive disk held horizontally rotatably by the guide plate and engaged with the wick holder via a slide pin. and a drive shaft that engages with the drive disk, and is located on the outer peripheral side of the rising wall of the guide plate and is housed between the burner basket and the lamp wick is lowered. The guide plate and A liquid fuel combustor characterized in that a braking spring plate is attached to one side of one of the drive discs, and a protrusion for the spring plate is provided on the other side.