JPH0318812Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a kerosene vaporizing burner that does not require electrical preheating and can shift to vaporization combustion in a short time, and particularly relates to an oil recovery device.

In general, in a kerosene vaporizing burner that performs preliminary combustion (diffusion combustion) at the bottom of a pot-shaped preheating combustion cylinder and then transitions to vaporization combustion, it is necessary to suppress undue expansion of the preliminary combustion flame.

The present invention focuses on an oil recovery device as a means for achieving this goal.

Hereinafter, an embodiment of the present invention will be explained with reference to FIG.

First, 1 is a pot-shaped preheating combustion cylinder with a large number of air holes 2 bored all around the cylindrical part 1a, an open part 3 at the bottom, and a vaporizer cylinder 4 arranged and fixed near the open part 3. ing. An annular kerosene receiver 5 is provided at the lower part of the vaporizing cylinder 4, and a kerosene flow hole 24 is bored in the kerosene receiver 5 to form a kerosene dripping section. Incidentally, the kerosene dripping part may have a structure in which the kerosene drips directly from the lower end of the vaporizing tube 4 without having the flow hole 24.

Furthermore, the vaporization cylinder 4 has a heat recovery flange 41 at the upper end and a mounting cylinder 42 on which the burner body 6 is placed, and a rotating shaft 71 of the motor 7 is inserted into the center of the interior, and the diffuser 8 is fixed to the rotating shaft 71. do. Diffuser 8 is vaporizer cylinder 4
This is comprised of a kerosene supply cylinder 81 and a disc-shaped diffusion vane 82 fixed to a rotating shaft 71. Note that the kerosene supply tube 81 is attached to the leg 8.
3 to the rotating shaft 71. 15 is a blower tube, on the upper end of which a preheating combustion tube 1 is placed;
The lower end is placed in the oil tank 29. This blower tube 15
There is a disc-shaped rectifier plate 1 that supports the motor 7 inside.
2 is fixed, and holes 1 are formed around the current plate 12.
3 is drilled. This hole 13 communicates with an air chamber 14 surrounded by a blast tube 15 and a preheating combustion tube 1, and also communicates with the inside of the fan case 10, which is connected to the blast tube 15. By the way, fan case 10
has a built-in fan 11, and a rotating shaft of a motor (not shown) is fixed to the fan 11, so that when the fan 11 is rotated, air is supplied to the air chamber 14 through the hole 13.

Now, place the mixing cylinder 20 on top of the vaporizing cylinder 4,
A pressure equalizing cylinder 21 having a large number of small holes is fixed to this mixing cylinder 20.

Furthermore, the burner body 6 is arranged to overlap the mixing cylinder 20. A large number of flame ports 22 are bored in the burner body 6,
The inside thereof is lined with a wire mesh 23. A flame detection rod 25 faces near the flame port 22.
51 is a gap 5 between the bottom of the carburetor cylinder 4 and the preheating combustion cylinder 1
The upper end side is fixed to the bottom of the vaporizing cylinder 4, and the lower end side is fixed to the bottom of the preheating combustion cylinder 1 with a wire mesh 52 sandwiched around the entire circumference. Furthermore, since the kerosene flow hole 24 of the vaporizing tube 4 is opposed to the bottom of the preheating combustion tube 1, that is, the part where the wire mesh 52 is stretched, the dripped kerosene is passed between the partition wall tube 51 and the preheating combustion tube 1. It is designed so that it can be supplied through a small gap 53 between the two.

The heat generating part of the ignition heater 26 passing through the preheating combustion cylinder 1 is arranged near the partition cylinder 51.

Note that 27 is an oil supply pipe connected to the electromagnetic pump 28, and its tip faces the kerosene supply tube 81 of the diffuser 8. By the way, an annular inclined line is attached to the bottom of the preheating combustion cylinder 1, and the height of the annular inclined line is made to continuously and gradually change, and a drain pipe is installed at the lowest position of the inclined line. Part 31
Moreover, a drain hose 30 is connected to the drain pipe portion 31. Therefore, the oil pipe 27
Excess kerosene supplied through the diffuser 8 passes through the slope of the preheating combustion tube 1 to the drain pipe section 31.
, and the drain hose 30 is connected from the pipe section 31.
The oil is returned to the oil tank 29 through the oil tank 29.

In the embodiment configured as described above, when the ignition heater 26 is energized and becomes red hot, when the electromagnetic pump 28 is driven and the motor 7 is simultaneously driven, kerosene flows from the oil tank 29 through the oil feed pipe 27 to the kerosene in the diffuser 8. The kerosene is supplied to the supply cylinder 81, and by the centrifugal force of the kerosene supply cylinder 81, the kerosene is sprayed from the upper end of the kerosene supply cylinder 81 onto the inner peripheral surface of the stationary vaporizing cylinder 4.

On the other hand, the forced air generated by the fan 11, that is, the air supplied from the fan case 10, heads from the air chamber 14 to the air hole 2 of the preheating combustion tube 1, and passes through the vaporization tube 4 and the mixing tube 20. , toward the flame port 22 of the burner body 6. At this time, the carburetor 4
Since the kerosene is not preheated, the kerosene flows down along the inner circumferential surface of the vaporizing tube 4, is collected at a lower position of the kerosene receiver 5, and is discharged to the bottom of the preheating combustion tube 1 through the kerosene flow hole 24. The discharged kerosene passes through the wire mesh 52 from inside the partition wall cylinder 51 and reaches the red-hot ignition heater 26 nearby, where it is ignited by the heat generating part of the heater 26, and is then ignited through the air holes 2 drilled around the entire circumference of the cylindrical part 1a. The forced wind spreads the flame around the entire circumference of the cylindrical portion 1a to perform preliminary combustion. Also, due to this preliminary combustion, the outer circumferential surface of the vaporizer tube 4 is heated, and when the temperature reaches or exceeds the vaporization temperature of kerosene, the kerosene sprayed from the diffuser 8 is heated to the vaporizer tube 4.
It begins to vaporize on the inner circumferential surface. As a result, the carburetor 4
The amount of kerosene flowing down the inner circumferential surface of the combustion chamber 1 and flowing into the preheating combustion tube 1 gradually decreases.

Further, this kerosene gas is transferred from the gas chamber 9 of the vaporizing cylinder 4 to the mixing cylinder 20 and the pressure equalizing cylinder 21 by the fan 11.
The burner body 6 passes through the wire mesh 23 and mixes with air.
is discharged to the outside from the flame port 22. The mixed gas discharged to the outside is ignited by the pre-combustion flame in the cylindrical part 1a of the preheating combustion tube 1, and initially forms a vaporization flame at a position away from the flame port 22, but the inner peripheral surface of the vaporization tube 4 As the amount of evaporation increases and the concentration of the mixed gas discharged from the flame nozzle 22 increases, a vaporizing flame is formed near the flame nozzle 22, and due to this vaporization combustion, the heat recovery flange of the vaporization tube 4 41 is heated, the inner circumferential surface of the vaporizer cylinder is also heated, and the vaporization temperature of the kerosene is maintained. As a result, preliminary combustion is stopped and only vaporization combustion by the flame port 22 of the burner body 6 is performed.

When the combustion transitions to vaporization, the flame detection rod 25 detects the flame, the energization to the ignition heater 26 is stopped, and stable vaporization combustion continues thereafter.

Incidentally, the slope formed at the bottom of the preheating combustion tube 1 not only serves to quickly spread the kerosene that seeps out from the lower end of the partition tube 51 at the time of ignition to the entire circumference of the preheating combustion tube 1; This has the effect of suppressing the expansion of the preliminary combustion flame due to more kerosene than necessary after ignition and flame expansion. In addition, since the height of the annular slope line changes continuously and gradually, even if the preheating combustion cylinder is assembled or installed at a slight slope, residual oil can be removed from the drain pipe. can lead to. Furthermore, with such a configuration, excess kerosene due to oil pooling at the time of mis-ignition can be quickly discharged to the outside of the preheating combustion tube 1, so that safe ignition can be performed at the time of re-ignition.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention. 1... Combustion cylinder for preheating, 1a... Cylindrical part, 2...
Air hole, 3... Opening part, 4... Vaporizer cylinder, 41...
Heat recovery flange, 42... Mounting tube, 5... Kerosene receiver, 6... Burner body, 7... Motor, 71... Rotating shaft, 8... Diffusion body, 81... Kerosene supply tube, 82
...Diffusion vane, 83...Legs, 9...Gas chamber, 10
... Fan case, 11 ... Fan, 12 ... Straightening plate, 13 ... Hole, 14 ... Air chamber, 15 ... Blower cylinder, 20 ... Mixing cylinder, 21 ... Pressure equalization cylinder, 22 ...
...flame port, 23...wire mesh, 24...kerosene distribution hole, 2
5...Flame detection rod, 26...Ignition heater, 27...
Oil feed pipe, 28... Electromagnetic pump, 29... Oil tank, 30... Drain hose, 31... Drain pipe section, 51... Partition tube, 52... Wire mesh, 53...
...Gap, 54...Gap.

Claims (1)

[Scope of utility model registration request] A pot-shaped preheating combustion cylinder with many air holes is provided with an open part at the bottom, a vaporizer cylinder is placed and fixed near the open part, and a rotating shaft is installed in the gas chamber in the center of the vaporizer cylinder. A diffuser is fixed to the rotating shaft, and the diffuser is placed in the gas chamber of the vaporizing cylinder, and a burner body with a flame opening is placed on the top of the vaporizing cylinder. A kerosene vaporizing burner is provided in which a kerosene dripping part provided at the bottom of the cylinder faces the bottom of the preheating combustion cylinder, and an annular inclined line is attached to the bottom of the preheating combustion cylinder, and the height of the annular inclined line is A kerosene vaporizing burner characterized in that the slope of the kerosene vaporizing burner is made to continuously and gradually change, a drain pipe part is provided at the lowest position of the slope line, and a drain hose is connected to the drain pipe part. Collection device.