JPS599130Y2 - liquid fuel combustion equipment - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a liquid fuel combustion device.

In liquid fuel devices such as kerosene stoves, if the wick becomes tar-stained or some other malfunction occurs and the wick needs to be replaced, the rack and operating shaft installed in the wick holder are usually replaced. This is done by disengaging the pinion provided, but this necessitates more disassembly than necessary, resulting in the inconvenience of losing parts or not being able to assemble it back to its original state. .

This invention was proposed in view of these circumstances.
It is an object of the present invention to provide a liquid fuel combustion device having a structure that allows easy and accurate replacement of the wick.

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

Reference numeral 1 designates a fixed tank. A wick guide tube 2 is welded to stand on the inside of the fixed tank 1, and a cylindrical lamp wick 3 is held on the outer circumferential side of the wick guide tube 2 by a wick holder 4. This core holder 4 is fitted so as to be slidable in the direction.
A rack 6 with a rack guide 5 provided in parallel above is attached to the outer side of the rack.

Further, the outer end of the cylindrical mounting bracket 7 is integrally fixed to a predetermined position on one side of the fixed tank 1,
A bolt-shaped bearing body 9 having a guide hole 8 is screwed into the mounting fitting 7 from the outside.

Reference numeral 10 denotes an operating shaft, and the operating shaft 10 is rotatably inserted into the mounting bracket 7 through the guide hole 8 of the bearing body 9 at its inner side, and the rack 6 is attached to the inner end thereof. A pinion 11 meshed with is fixed.

Further, a collar 12 is fitted on the inner side of the operating shaft 10 so as to be positioned against the lower surface side of the rack guide 5, and the outer side of this collar 12 is fitted on the inner side of the mounting bracket 7. is inserted into the operating shaft 1.
This is intended to prevent zero vibration.

Further, an oil leakage prevention ring 13 and a restraining washer 14 made of an O-ring are fitted to the operating shaft 10 so as to be positioned relative to the outer end of the collar 12, thereby preventing oil leakage. Further, a coil-shaped retaining spring 15 is fitted to the operating shaft 10 between the washer 14 and the bearing body 9, so that the pinion 11 is always engaged with the rack 6. Forced.

Further, on the outside of the fixed tank 1, a locking pin 16 is press-fitted orthogonally to the operating shaft 10 through an insertion hole 17, and in a state locked to the locking pin 16. A metal fitting 18 is held on the operating shaft 10.
is fitted, and a coil-shaped return spring 20 is housed in an annular groove 19 formed on the inner side of the retainer 18, and one end of this return spring 20 is inserted into the engagement provided on the retainer 18. The other end of the return spring 20 is locked to the locking hole 21, and the other end of the return spring 20 is locked to the locking edge 22 of the fixed tank 1.

Further, a circular protrusion 23a is provided on the outer side of the holding fitting 18.
A ratchet plate 24 is fitted onto the circular protrusion 23H via an annular spring holder 25, and a square protrusion 23b protrudes from the outer side of the circular protrusion 23a. This square protrusion 23
A cover unit 26 is fitted and locked to b through a square hole 26a, and a drive spring 27 is wound around the spring holder 25, and this drive spring 27
The spring holder 2 resists its own elasticity.
One end is crimped to the force bar 5, and the other end is locked to a claw piece 28 formed on the force bar integral 26.

The cover unit 26 is crimped and locked to the spring holder 25 by an elastic retaining ring 29, and in this state, the operation dial 30 is fitted onto the outer end of the operation shaft 10.

The rack 6 includes a horizontal portion 6a and an inclined portion 6b, and a toothless portion 6C is provided at one end of the horizontal portion 6a, and the rack guide 5 is located outside the rack 6. Further, a storage recess 9a for the retaining spring 15 is provided on the inner side of the bearing body 9, and the inner bottom of the storage recess 9a and the washer The retaining spring 15 is in elastic contact with the outer surface of the retainer 14.

Also, a distance A from the inner end surface of the rack guide 5 that the collar 12 abuts to the inner end surface of the collar 12, and a distance B from the inner end surface of the bearing body 9 to the holding washer 14,
The relationship with the material thickness C of the rack 6 is set as A>B>C.

In such a structure, when the operating shaft 10 is rotated clockwise through the operating dial 30 during combustion, the lamp wick 3 is held in the wick holder 4 via the rack 6 meshed with the pinion 11 of the operating shaft 10. rises in a state of
The upper end of the wick 3 is located in a fire pan (not shown),
In this case, the operating shaft 10 is rotated while resisting the reversing force of the return spring 20 and the spring pressure of a locking piece (not shown) against the ratchet plate 24, and is prevented from being reversed by the locking piece, and is thereby returned. The spring 20 is gradually charged.

In this state, the lamp wick 3 is ignited and used for combustion, but if you want to extinguish the fire urgently, use the ratchet plate 24.
By releasing the locking piece (not shown) from the locking piece, the biasing force stored in the return spring 20 is applied to the operating shaft 10.
, and by this left rotation of the operating shaft 10,
During combustion use, an operation opposite to that described above occurs, and the wick 3 is lowered.

Note that when the operation dial 30 is rotated clockwise during combustion use, the tightening force of the drive spring 27 against the spring holder 25 overcomes the reversing force of the return spring 20 and acts to prevent counterclockwise rotation.

When extinguishing fire or adjusting combustion by manually rotating the operation dial 30 to the left, the operation shaft 10 and the restraining metal fitting 1
8 and the cover unit 26 are rotated to the left as the operating shaft 10 is rotated by the operating dial 30 in a mutually engaged state.

In addition, if tar adheres to the lamp wick 3 due to the use of degraded fuel or impure fuel, or if the lamp wick 3 needs to be replaced due to various malfunctions, the lamp wick 3 is lowered to the lowest end via the operating shaft 10. At the same time, the burner basket (not shown) is unfixed from the fixed tank 1 and the burner basket is removed from the fixed tank 1.

Next, the operating shaft 10 is rotated to the left to release the stored force of the return spring 20, and the pinion 11 of the operating shaft 10 is rotated to the left.
and the rack 6 are disengaged.

In this state, by pulling the ratchet plate 24 positioned by the retaining ring 29 against the operating shaft 101 toward you, the operating shaft 10 resists the reaction force of the retaining spring 15, and the collar 12, oil leakage prevention ring 13, and the washer 14 and move outward together with the storage recess 9.
In a state where the retaining spring 15 is embedded in the inside a, the washer 14 and the inner end surface of the bearing body 9 come into contact with each other, that is, move by the distance B, and then stop.

In this case, since the distance A from the inner end surface of the rack guide 5 whose sliding surface is the upper part of the collar 12 to the inner end surface of the collar 12 is in the relationship A>H, the operating shaft 10 is The rack guide 5 is supported on the collar 12 and the lead holder 4 does not fall even if the rack guide 5 is pulled forward by the dimension of Since they are in a relationship, the wick holder 4 and the lamp wick 3 can be removed by pulling the wick holder 4 upward.

On the other hand, when inserting the replaced wick holder 4 with a new lamp wick 3, pull the operating shaft 10 toward you, insert the toothless part 6C of the rack 6 onto the pinion 11 of the operating shaft 10, and turn the operating dial 30 clockwise. Then, the pinion 11 and the rack 6 are engaged, and the burner basket is installed.

In the illustrated example, the rack 6 and the rack guide 5 are integrally formed, but they may be formed separately, and the toothless portion 6C is cut out to the lower end of the rack 6. You can also do this.

According to the present invention, when replacing the lamp wick 3, the lamp wick 3 can be replaced extremely easily and reliably by simply removing parts such as the burner basket in which the wick holder 4 is positioned, without requiring special disassembly. and in that case,
Even if the operating shaft 10 is pulled forward, the lead holder 4 does not fall, and when assembling, the meshing position of the rack 6 and pinion 11 is inevitably set by inserting the lead holder 4. The lamp wick 3 can be replaced smoothly and accurately without the risk of dissipating parts.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a sectional view of a liquid fuel combustion device, Fig. 2 is an exploded perspective view around its operating axis, and Fig. 3 is an enlarged sectional view of a part thereof. FIG. 4 is a perspective view of a portion thereof. 1...Fixed tank, 3...Light wick, 4.
... Core holder 5 ... Rack guide, 6
...Rack, 8...Guide hole, 9...
...Bearing body, 9a...Storage recess, 10.
...Operation axis, 1...Pinion, 12...
...Color, 13...Oil leakage prevention ring, 1
4...Retainer washer, 15...Retaining spring.

Claims (1)

[Scope of utility model registration request] A fixed tank 1, a wick holder 4 which is located inside the fixed tank 1 and is movable up and down and holds a lamp wick 3, and a rack guide 5 which is provided parallel to each other on the outside of the wick holder 4. and a rack 6, an operating shaft 10 which has a pinion 11 for the rack 6 at its tip and is rotatably inserted and held through a bearing body 9 having a guide hole 8 in the fixed tank 1, and this operating shaft 10. In contrast, a collar 12, an oil leakage prevention ring 13, a restraining washer 14, and the above-mentioned rack guide 5 are positioned and fitted inside the fixed tank 1 and arranged sequentially from the inside to the outside. a retaining spring 15 located in the storage recess 9a on the inner side of the bearing body 9; The relationship between the distance B from the inner end surface of the bearing body 9 to the holding washer 14 and the material thickness C of the rack 6 is set to A>B>C, and the operating shaft 10 is pulled outward to remove the bearing body 9. The pinion 11 is disengaged from the rack 6 and the collar 12 maintains contact with the rack guide 5 when the holding washer 14 is brought into contact with the inner end surface. liquid fuel combustion equipment.