JPS601525B2 - liquid fuel combustion equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention enables generation of vaporized gas and evaporative combustion by circulating a part of the combustion flame swirling inside the combustion cylinder toward the flame nozzle to the vaporization groove and intensely heating the vaporization groove. to effectively promote the
The present invention relates to a liquid fuel combustion device that can perform stable evaporative combustion over a long period of time.

Conventionally, in order to achieve the intended purpose of being inexpensive, trouble-free, and extremely simple in construction, fuel supplied to the combustion dish was evaporated by the replenishing action of combustion air and the heating action of the ignited combustion flame. A large number of combustion devices that allow combustion to occur have been developed.

By the way, in the above-mentioned apparatus, it goes without saying that a stable combustion state cannot be obtained unless the amount of replenishing combustion air and the amount of fuel supplied are adjusted to an appropriate ratio.
When the amount of combustion air is large compared to the amount of fuel supplied, the evaporation effect is significantly reduced due to the cold combustion air, making it impossible to obtain a stable combustion body for a long period of time. The reduction in evaporation caused a blow-out phenomenon, which sometimes caused accidents where combustion was interrupted. In order to solve the above-mentioned drawbacks, combustion devices using nozzles and rotating members have been proposed to promote fuel vaporization. Although it was expensive, it was not possible to obtain stable vaporization combustion, and there was a strong desire for a fundamental solution to this problem. In view of the above, the present invention has been developed by forcibly introducing a part of the combustion flame into the front half of the vaporization groove in the process of rotating the inside of the combustion chamber towards the combustion flame opening for ignition which is constantly burning. The vaporized gas generated at the same time is evaporated and burned in the latter half of the vaporization groove where the combustion flame for ignition is burning, while rapidly swirling the combustion flame. A liquid fuel combustion device that can carry on the airflow, suck it into the combustion cylinder, and then rotate it again toward the nozzle, thereby allowing stable evaporative combustion to continue over a long period of time regardless of the amount of oil fed. The configuration of the apparatus of the present invention will be described below with reference to a preferred embodiment shown in the accompanying drawings. Reference numeral 1 denotes an oblong combustion tube with an outside air inlet 2 on the rear peripheral surface of one side and a flame nozzle 3 closed on the front center of the other side. In addition, a vaporization groove 4 is provided horizontally along the combustion tube 1 at the bottom of the combustion tube 1 so that the outside air can be turned and transferred toward the false flame port 3.

Then, a part of the swirling airflow is forcibly introduced into the vaporization groove 4 and the critical first and second half positions of the vaporization groove 4 and the combustion tube 1, and then the swirling airflow is directed rearward and reversed to the direction of swirl movement. The guide wall 5 promotes vaporization of the fuel sent to the gas flow groove 4, and the gas mixture generated by mixing the vaporized gas and the swirling air flow in the first half of the vaporization groove 4 is quickly removed. After evaporating and burning the combustion flame and causing the combustion flame to be sucked and swirled into the combustion tube 1 by the suction action of the swirling airflow, the guide wall 6 for moving toward the flame opening 3 is inserted into the combustion tube 1 so as to intersect with the guide wall 6. It has been extended to

Therefore, the guide wall 5 provided at the front half position projects in the direction opposite to the turning direction, and the guide wall 6 provided at the rear half position projects in the same direction as the turning direction. At a rear position of the vaporization groove 4 formed as described above, a lotus-shaped vaporization cliff body 8 is attached via the vaporization groove 4 and the partition plate 7. An ignition wire 10 is mounted in the ignition sparrow body 8 with its base end upright so that its free end passes through a communication port 9 provided at the lower part of the partition wall plate 7 and projects into the vaporization groove 4 at the rear half position. An ignition heater 11 is also disposed at a position upright and rearward of the ignition cotton 10. 12 is an oil pipe inserted into the ignition cliff body 8 through a customs port, and 13 is a blower connected to the outside air inlet 2.

Note that the blower 13 is not provided at the outside air inlet 2, and a suction impeller (not shown) is installed on the side of the flame nozzle 3 to draw outside air into the combustion cylinder 1 from the outside air inlet 2 by the suction action. In such a case, it goes without saying that a structure is provided in the combustion node 1 so that the outside air can move to the front flame opening 3 side in a swirling state. Further, an intake square 14 of an appropriate size is closed on one side wall of the ignition sparrow body 8. Note that the oil pipe 14 may be provided at the position indicated by the chain line in FIG. 1 to generate a large amount of vaporized gas. Next, the operation of the present invention will be explained.

In this figure, the blower 13 is started to forcibly introduce outside air from the outside air inlet 2 into the combustion cylinder 1 in a tangential direction.

Then, the outside air generates a swirling airflow that moves inside the combustion tube 1 toward the flame opening 3, and a part of the swirling airflow is introduced into the front half of the vaporization groove 4 by the guide wall 5. rear,
As the airflow moves in the direction opposite to the swirling direction, the airflow transferred to the rear half of the vaporization groove 4 is rapidly swirled and spouted into the combustion tube 1 along the guide wall 6 due to the suction action of the swirling airflow, and is returned to the outside air. It merges with the swirling airflow newly introduced into the combustion cylinder 1 from the inlet 2 and moves swirling toward the flame opening 3, creating a reflux state. Then, the fuel 0 is sent into the ignition tomb 8 through the oil pipe 12, and after the ignition wire 101 is sufficiently penetrated, the ignition heater 11 is energized to ignite and burn the ignition wire 10. If you do,
The combustion flame combusted in the latter half of the vaporization groove 4 was mixed with the swirling airflow moving in the above-mentioned reflux state to promote combustion, and gradually some of the combustion flame was introduced into the vaporization groove 4 through the guide wall 5. Thereafter, the gas is moved rearward, and the reflux action of being sucked into the combustion tube 1 along the guide wall 6 along with the combustion flame of the ignition line 10 from the latter half of the vaporization groove 4 and moving around is repeated. As a result, the entire vaporization groove 4 is quickly heated to the vaporization atmosphere temperature by the heating of the reflux combustion flame, so the fuel sent into the vaporization groove 4 becomes vaporized gas far away, and the generated vaporized gas During the transition, the gas mixes with the swirling airflow, becomes a complete moat gas, moves to the latter half of the vaporization groove 4, is ignited by the combustion flame of the ignition line 10, and is sucked into the combustion tube 1 along the guide wall 6. Complete combustion occurs under the replenishing action of a new swirling airflow, and combustion continues with a part being ejected from the flame nozzle 3 and the other part being returned to the vaporizing groove 4. In short, the present invention provides a combustion tube 1
A portion of the outside air introduced into the combustion chamber is introduced into the front half of the vaporization groove 4 provided at the bottom of the combustion tube 1 via the guide wall 5 as a swirling airflow that moves from the outside air introduction port 2 toward the false flame port 2. After that, the air is moved in a direction opposite to the direction of swirling movement, and by the suction action of the swirling airflow from the rear half of the vaporization groove 4, it is quickly circulated into the combustion tube 1 along the guide wall 6 while forming a swirling shape. So,
The combustion flame that is constantly burned by the ignition line in the latter half of the vaporization groove 4 rides on the airflow in the recirculation state, and a part of it moves from the combustion tube 1 to the inside of the vaporization groove 4 from the front side to the rear side, and then is re-ignited. The effect of recirculating the flow into the combustion tube 1 is smoothly carried out, thereby making it possible to quickly raise the temperature of the combustion tube 1 and the vaporization groove 4 to the vaporization atmosphere temperature. Therefore, the fuel supplied into the vaporization groove 4 through the oil feed pipe 12 is quickly vaporized in the first half of the vaporization groove 4 by the combustion flame moving in the direction opposite to the direction of movement of the swirling airflow, and the generated vaporized gas is After being mixed with outside air to become a complete mixed gas and sent to the rear of the vaporization groove 4,
It is drawn into the combustion cylinder 1 by the suction effect of the swirling airflow, and at the same time, it can be ignited and burned by the combustion flame of the ignition line 10. Therefore, in the device of the present invention, since the combustion flame generated by the ignited cotton 10' constantly circulates between the combustion tube 1 and the vaporization groove 4, vaporization of the fuel is ensured, and the fuel is sent. Even if the amount of air and the amount of air blown are unequal, the effect is that combustion can be continued for a long period of time under a stable condition without being interrupted.

[Brief explanation of the drawing]

The drawings show one embodiment of the device of the present invention.
The figure is a perspective view of the whole with a part cut away, Figure 2 is a longitudinal front view, Figure 3 is a sectional view taken along the line A-A in Figure 2, and Figure 4 is a line taken along the line B-B in Figure 2. FIG. 3 is a cross-sectional view in the direction of arrows. 1... Oblong combustion tube, 2... Outside air inlet, 3...
・Story flame opening, 4... Vaporization groove, 5... Guide wall provided at the critical front half position between the combustion tube and the vaporization groove, 6... Guide provided at the critical half position between the combustion tube and the vaporization groove. Wall, 10... ignited cotton. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. A vaporizing groove is installed horizontally along the combustion tube at the bottom of the oblong combustion tube, which allows the outside air introduced from the outside air inlet to be rotated toward the flame nozzle. In the latter half position, there is a guide wall that promotes fuel vaporization by introducing a part of the swirling airflow into the vaporization groove and moving it backwards, and the combustion flame that evaporates and burns in the vaporization groove is combusted by the suction effect of the swirling airflow. Guide walls for suctioning and turning into the cylinder are disposed in an intersecting manner, and an ignition casing is disposed at the rear of the vaporization groove to constantly inject combustion flame into the rear half of the vaporization groove. A liquid fuel combustion device featuring: