JPS6229775Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid fuel combustion device, and more particularly to an elevating device for a regulating cylinder disposed within a combustion cylinder that adjusts combustion conditions.

Conventionally, this kind of liquid fuel combustion device, such as petroleum, has an inner flame tube and an outer flame tube placed on the fire pan, a wick advanced between the inner flame tube and the outer flame tube, and the inner flame A structure is adopted in which the fuel impregnated in the wick is combusted with combustion air supplied from the vents between the tube and the outer flame tube. In such a structure, if the amount of protrusion of the wick into the fire pan is reduced to reduce the firepower, the combustion position in the combustion tube will be lowered, the temperature of the fire pan will rise, and if combustion continues for a long time, the tar in the kerosene will increase. A large amount of monoxide adheres to the wick or fire pan, resulting in insufficient combustion and the wick cannot be raised and lowered smoothly, resulting in a large amount of monoxide in the exhaust gas compared to strong combustion when the wick is raised to the specified position. This will generate carbon gas.

For this purpose, an adjustment tube is provided in the inner flame tube of the combustion tube, and an adjustment tube is provided in the adjustment inner tube so that it can be raised and lowered, and the adjustment tube is lowered during weak combustion to change the protruding height of the lamp wick from the fire pan. Instead, the combustion air is mainly guided and supplied from the upper side of the inner flame tube of the combustion tube, weakening the draft to the combustion part and drastically reducing the amount of air supplied near the wick.
By also reducing the amount of vaporized gas burned,
Combustion devices have been developed that can maintain a weak combustion state with a good balance between the amount of air and vaporized gas, and can prevent tar adhesion and the generation of carbon monoxide gas.

In this structure, both the inner adjustment cylinder and the adjustment cylinder are slidably fitted in a nearly sealed state, and the adjustment cylinder is connected to the lifting mechanism, so the adjustment cylinder cannot move up and down smoothly within assembly errors. Therefore, stable operation over a long period of time is not guaranteed.

The present invention was developed in view of the above-mentioned lack of tightening, and includes an adjustable inner cylinder that fits the adjustable cylinder so as to be able to move up and down, and is swingably supported on a connecting pin that connects the inner flame cylinder and the outer flame cylinder of the combustion cylinder. The present invention provides a liquid fuel combustion device in which smooth operation is obtained with the adjustment cylinder always in close to surface contact with the adjustment inner cylinder, and the combustion cylinder is stably maintained.

Next, the structure of an embodiment of the present invention will be explained with reference to the drawings.

Reference numeral 1 denotes a fuel tank, which is attached to a mounting base 2 via a support piece 3, and a core guide inner cylinder 4 is integrally provided inside the fuel tank 1. A lamp wick 5 is fitted therein so as to be removable and movable up and down. The lamp wick 5 is fitted into and supported by a cylindrical wick holder 6, and on the outer periphery of the wick holder 6, rack teeth 7 are formed in the vertical direction.
A rotating shaft 9 provided with a gear 8 that fits into the rack teeth 7 is rotatably supported by a bearing 10 attached to the fuel tank 1, and a knob 11 is provided at the end of the rotating shaft 9 protruding from the bearing 10. It is being

Next, reference numeral 12 denotes a burner basket, and this burner basket 12 is provided with a wick guide outer cylinder 13 which is fitted into the lamp wick 5 which is fitted into the wick guide inner cylinder 4.

Further, a fire plate ring 14 is located above the core guide outer cylinder 13 and is integrally provided with the burner basket 12 by crimping or the like.

The burner basket 12 is detachably attached to the upper part of the fuel tank 1 with screws or the like.

Further, at the upper end of the core guide inner cylinder 4, there is provided an annular core guide cap 16 with a receiving step 15 formed on the outer peripheral edge.
are integrally attached by caulking or the like, and the wick guide cap 16 and the fire pan ring 14 form a fire pan portion 17 from which the upper end of the wick 5 extends and retracts. This core guide cap 16 has a central opening 18.
is formed and communicates with a combustion air suction portion 19 opened at the lower end inside the core guide inner cylinder 4.

Reference numeral 20 denotes a combustion tube, which includes an inner flame tube 21 supported by the stepped portion 15 of the core guide cap 16, and an inner flame tube 21 that is fitted onto the outer periphery of the inner flame tube 21 with a gap maintained and supported by the fire pan ring 14. An outer flame tube 22 and an outer tube 23 fitted to the outside of the outer flame tube 22 with a gap maintained therein.
These inner flame tube 21, outer flame tube 2
2 and the outer cylinder 23 are integrally connected by intersecting pins 24 and 25. and the inner flame tube 2
1 and the outer flame cylinder 22 are formed with a large number of ventilation holes 26. The connecting pins 24 and 25 are connected from the outer tube 23 of the combustion tube 20 to the outer flame tube 22 and the inner flame tube 21.
The outer cylinder 23 crosses the inner flame cylinder 21 at the center of the inner flame cylinder 21.
A nut 28 is screwed into the threaded end portion 27 protruding from the outer cylinder 23, the outer flame cylinder 22, and the inner flame cylinder 21 using the connecting pins 24, 25.

Next, reference numeral 29 denotes an adjustment inner cylinder, which is located within the inner flame cylinder 21 and is disposed at an approximately midpoint position in the height direction of the inner flame cylinder 21, and is a guide for closing the upper opening of the adjustment inner cylinder 29. A small gap is provided between the annular attachment edge 31 formed on the periphery of the plate 30 and the adjustment inner cylinder 29. A support hole 32 passing through the connecting pins 24 and 25 is formed in the adjustment inner cylinder 29, and the support hole 32 has a diameter larger than the outer diameter of the connecting pins 24 and 25. And this adjustment inner cylinder 2
Reference numeral 9 denotes connecting pins 24 and 2 that pass through the support hole 32.
5, the guide plate 30 is swingably supported by a gap between the mounting edge 31 of the guide plate 30 and the adjustment inner cylinder 29.

Furthermore, the mounting edge 31 of the guide plate 30 is fixed to the inside of the inner flame cylinder 21, and a large number of ventilation holes 33 are formed in the guide plate 30 at a portion corresponding to the inside of the adjustment inner cylinder 29. .

Next, reference numeral 34 denotes an adjustment cylinder, which has almost the same height as the adjustment inner cylinder 29, and is fitted inside or outside of this adjustment inner cylinder 29 so as to be able to rise and fall, and the lower part of this adjustment inner cylinder 29 is directed downward. A vent hole 36 is formed in the bottom surface 35 of the adjustment cylinder 34.

When the adjustment tube 34 is lowered to its lowest point, the lower diameter reduced portion 37 is located at the central opening 1 of the core guide cap 16.
8 , and the bottom surface 35 is adapted to be positioned within the core guide cap 16 .

Next, reference numeral 38 denotes an adjustment rod, which is bent to have a substantially U-shaped cross section, and has a screw hole 39 formed in its upper surface. The adjustment rod 38 is supported by a support fitting 40 at the inner center of the core guide inner cylinder 4 so as to be able to move up and down.

The adjustment cylinder 34 is inserted into the screw hole 39 of the adjustment rod 38.
A screw 42 inserted into a support hole 41 formed in the center of the bottom surface of the holder is screwed and tightened.

Further, an operating mechanism 43 that raises and lowers the adjustment rod 38
is a pin 44 protruding from the lower end side of this adjustment rod 38.
The adjustment lever 46 has an adjustment lever 46 engaged with a long groove 45 formed at its tip. It is rotatably supported. A stop pin 48 is provided on the operating side of the distal end of the adjustment lever 46, and this stop pin 48 engages with an arcuate resistance hole 49 formed in the shaft support plate 47.

Next, the operation of this embodiment will be explained.

During combustion operation, the rotary shaft 9 is rotated by operating the knob 11, the gear 8 of the rotary shaft 9 is rotated, and the gear 8 of the rotary shaft 9 and the lock teeth 7 of the lead holder 6 engage with each other, so that the lead holder 6 is rotated. is raised, and the upper end of the wick 5 is projected into the fire pan 17 so as to be exposed between the inner flame tube 31 and the outer flame tube 22 of the combustion tube 20. Then, the wick 5 is ignited and burned by an ignition device (not shown).

For strong combustion, when the operating side of the adjustment lever 46 is pressed down, the adjustment rod 38 is pushed up and the adjustment cylinder 34 is raised inside the adjustment inner cylinder 29, so that the lower end of the adjustment cylinder 34 is moved inside the adjustment cylinder. The center opening 1 of the core guide cap 16 is approximately the same height as the lower end of the tube 29.
A gap is created between 8 and the lower end of the adjustment cylinder 34. The air sucked from the lower end suction part 19 of the core guide inner cylinder 4 flows into the inner flame cylinder 21 from the opening of the core guide cap 16, and then flows through all the ventilation holes 26 of the inner flame cylinder 21 to the outside of the inner flame cylinder 21. The flame is supplied almost evenly between the flame tube 22 and strong combustion occurs.

In addition, for weak combustion, without changing the protruding height of the lamp wick 5 from the fire pan 17, the operating side of the adjustment lever 46 is pushed up while keeping the intensity constant.
8 is pulled down, the adjustment tube 34 closes the opening 18 of the core guide cap 16, and almost no air flows between the outer surfaces of the adjustment tube 34 and the adjustment inner tube 29 and the inner surface of the inner flame tube 21. , the supply of combustion air from the lower part of the inner flame cylinder 21 is suppressed, and the air supplied from the opening 18 of the core guide cap 16 flows through the ventilation hole 36 of the adjustment cylinder 34 and the ventilation hole 33 of the adjustment inner cylinder 29.
It is supplied to the upper part of the inner flame cylinder 21 through. For this reason, compared to the case of strong combustion, the combustion air mainly flows in from a higher position of the inner flame tube 21, so the draft to the combustion part is weakened, and the amount of air supplied near the wick 5 is also drastically reduced, resulting in the vaporization for combustion. The amount of gas will also decrease. Therefore, even if the protrusion height of the lamp wick 5 is kept constant, a weak combustion condition with a well-balanced air amount and vaporized gas can be obtained, and there is no deposition of tar or generation of large amounts of carbon monoxide gas.

When the adjustment tube 34 is raised and lowered, the adjustment inner tube 34 is swingably supported by the connecting pins 24 and 25, so that the adjustment inner tube 29 has a gap between the mounting edge 31 of the guide plate 30 and the adjustment inner tube 29. is swung, so the adjustment cylinder 34 is raised and lowered while maintaining surface contact with the adjustment inner cylinder 29.

Also, depending on the adjustment amount of the adjustment lever 46, the adjustment cylinder 3
At position 4, the amount of elevation can be adjusted steplessly, and the amount of heat generated can be adjusted steplessly. The adjustment lever 46 is engaged with the stop pin 48 and the resistance hole 49 to hold the adjustment cylinder 34 at an arbitrary vertical position, so that the adjustment cylinder 34 is not lowered by its weight.

Furthermore, the operating mechanism 43 for raising and lowering the adjustment rod 38 is not limited to the above configuration.

According to the present invention, the adjustment cylinder is fitted into the adjustment inner cylinder provided in the inner flame cylinder of the combustion cylinder so as to be able to move up and down, and combustion is supplied from inside the wick guide inner cylinder by vertical movement of the adjustment cylinder. A connecting pin that connects the adjustment inner cylinder to the inner and outer flame cylinders of the combustion cylinder in a liquid fuel combustion device that supplies air from the entire inside of the combustion cylinder, including the upper or lower part, to make it possible to vary the intensity of combustion. Since it is supported in a swingable manner, even if an assembly error occurs, the adjustment cylinder can be raised and lowered while maintaining parallel surface contact by the rocking of the adjustment inner cylinder, and the adjustment cylinder can smoothly move up and down. ,
In addition, the combustion tube is stably held in the fire pan, making it possible to reliably adjust the firepower and ensure good combustion.Furthermore, since the adjustment inner tube is supported by the connecting pin of the combustion tube, the number of parts does not increase and the cost is low. can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a fuel system showing an embodiment of the present invention, and FIG. 2 is a perspective view of an adjustment inner cylinder and an adjustment cylinder. 4... Wick guide inner tube, 5... Lamp wick, 17... Fire pan, 20... Combustion tube, 21... Inner flame tube, 22...
... Outer flame cylinder, 24, 25 ... Connection pin, 26 ... Ventilation hole, 29 ... Adjustment inner cylinder, 33 ... Top vent hole,
34... Adjustment tube.

Claims (1)

[Scope of utility model registration request] The lamp has a fire pan for advancing and retracting the upper end of the lamp wick, and an inner flame tube and an outer flame tube located on the fire tray and having the upper end of the lamp extended into the fire tray disposed between them. A combustion tube that supplies combustion air to the space above the wick from ventilation holes formed in the flame tube and the outer flame tube, respectively, and maintains a gap between the inner circumferential surface of the inner flame tube and the inner flame tube of the combustion tube. an adjustment inner cylinder arranged concentrically with a ventilation hole formed on the upper surface; and an adjustment inner cylinder that is fitted into the adjustment inner cylinder so as to be able to rise and fall freely, and in a lowered position abuts against the inner circumferential side of the fire pan, and the lamp wick is fitted therein. An adjustment cylinder is provided that guides and supplies combustion air supplied from the inside of the wick guide to an upper part of the combustion cylinder through a vent hole on the upper surface of the adjustment inner cylinder, and the adjustment inner cylinder is connected to an inner flame cylinder and an outer flame cylinder of the combustion cylinder. A liquid fuel combustion device characterized in that it is swingably supported by a plurality of connecting pins that connect to a flame tube.