JPS58203307A - Wick type kerosene burner - Google Patents

Abstract

PURPOSE:To prevent the deviation of combustion exhaust gas locally and to prevent the deterioration of properties of combustion exhaust gas, by a method wherein a partition plate with a hole is situated above a burner, a sucking action is created at an end of each of the partition plate and a plate body by an air current from a fan. CONSTITUTION:When fuel sucked up from a fuel tank 1 as a result of an ignition is burned, a fan 15, simultaneously, runs to blow downward an air current along an air tunnel 20, and the air current is mixed with combustion exhaust gas from a burner 12 and is blown as hot air through a supply opening 21. Combustion takes place in the vicinity of pores 12a part in a burner 12, and a gasification of fuel is continued by the heat of a flame produced in the pores 14a to continue combustion. The supply of a combustion air required by combustion is such that, when an air current passes through the air tunnel 20 from the fan 15, combustion exhaust gas is exhausted through a combustion cylinder 13 and a hole 17 in a partition 18 as shown by a dashed line arrow mark through the creation of a sucking action by the action of an ejector at the end of each of the partition plate 18 and a plate body 19, and this causes the combustion air to be sucked from below.

Description

[Detailed description of the invention] The present invention relates to a wick type oil combustion device.

In general, wick-type oil combustion equipment that mixes combustion exhaust gas and convection air flow and discharges the mixture as warm air sucks the combustion air supply by the combustion draft of the burner 1 itself, as shown in Figure 1. In addition, the combustion exhaust gas rising at that time is often mixed with the convection air flow from the fan 2 and discharged as warm air, but in this case, the problem is that the combustion draft amount cannot be increased due to the height of the burner 1, etc. was there.

Therefore, as shown in Fig. 2, a fan 2 is installed above the burner 1 part through a partition plate 3, and the air flow of the fan 2 causes the partition plate to
A suction action is created by the ejector action at the end of the
A device that sucks in combustion air and exhausts combustion exhaust gas could be considered, but in that case, as shown by the solid line in Figure 3, the flow velocity distribution of the exhausted combustion exhaust gas would be small in the center, and in some cases, the flow velocity distribution of the exhaust gas would be small in the center due to the entrainment of air flow. As shown by the broken line in the figure, a phenomenon occurs in which almost no flow occurs in the center. Therefore, during combustion, the combustion exhaust gas flows along the wall of the combustion tube 4, and the uncombusted combustion gas is cooled by the combustion tube 4 and is incompletely combusted. is overheated abnormally, causing an abnormality in the heat resistance of the combustion tube 4, and combustion becomes unstable.Also, since the combustion exhaust gas is concentrated in the surrounding area, a catalytic filter 6 for purifying the combustion exhaust gas is installed above the combustion tube 4. Even when using a catalyst filter 5
has little effect. Furthermore, even when the fan 2 is stopped and the fire is extinguished, the amount of unburned gas that rises during the fire extinguishment passes through the catalyst filter 5 due to the partition plate 3, and the effect of the catalyst filter 5 is small, reducing the pungent odor of the unburned gas. There was a problem with it being directly discharged outside the aircraft.

Therefore, the present invention aims to eliminate the above problems. In order to achieve this purpose, in the present invention, a partition plate with holes is provided above the burner, and the holes are covered with a plate.
The air flow from the fan creates a suction effect at each end of the partition plate and the plate body, thereby sucking in combustion air and discharging combustion exhaust gas from the burner section.

An embodiment of the present invention will be described below with reference to FIGS. 4 and 5.

Reference numeral 1 denotes a fuel tank, in which fuel 2 is sucked up by capillary action by a cylindrical wick 3. The lamp wick 3 is linked to a lever 4 of a wick up/down mechanism, and is biased by the action of a spring 6 so as to descend into the fuel tank 1 when the fire is extinguished.

6 is a solenoid that holds the left end of the lever 4 in a state in which the lamp wick 3 is pushed upward at the same time as the ignition operation; 7 is a cylindrical wick guide tube that is erected so as to penetrate inside the fuel tank 1; 8
is a cylindrical core outer tube provided on the outer periphery of the wick guide tube 7, and holds the lamp wick 3 vertically movably along the core guide tube 7 and the core outer tube 8. 9 and 1o are the core guide tubes 7. Core outer cylinder 8
A fire pan 1o is integrally formed at the upper end of the core outer cylinder 8, and a large number of ventilation holes 11 are provided in the rising side wall of the fire pan 1o. 12 is the core guide tube 7. Fire pan part 9 of core outer cylinder 8,
10 is a burner having air holes 12a placed on top; 13 is a combustion tube that covers this burner 12 and forms a combustion chamber 14 above it; 15 is a partition plate 18 having a catalyst filter 16 and holes 17 in the combustion tube 13; and a plate 19 covering the hole 17.
The airflow from the fan 16 passes through the wind barrel 20, mixes with the combustion exhaust gas from the burner 12, and blows it out as warm air from the outlet 21.

In the above configuration, when the left end of the lever 4 is pushed down, the wick 3
The upper part of is pushed out above the fire pans 9 and 10, and is held in this state by the suction action of the solenoid 6.

The fuel sucked up from the fuel tank 1 is then ignited by an ignition heater (not shown) to be combusted. At the same time, the fan 15 rotates, and the airflow is blown out downward along the wind barrel 2o, mixed with the combustion exhaust gas from the burner 12, and blown out from the outlet 21 as warm air. Also, combustion takes place in the pores 121 of the burr 12, and the fuel continues to vaporize due to the heat from the flame formed in the pores 14iL, and combustion continues with a constant amount of vaporization maintained.

Here, the combustion air required for combustion is supplied by creating a suction action by an ejector action on each end of the partition plate 18 and the plate body 19 when the air flow from the fan 15 passes through the inside of the wind cylinder 20. The combustion exhaust gas is exhausted from the combustion tube 13 and the hole 17 of the partition plate 18 as shown by the arrow, and is sucked in from below.

In addition, when the fire is extinguished, the switch SW1 shown in Fig. 5 is opened and all electric circuits are cut off, so the suction action of the solenoid 6 is removed and the left end of the lever 4 is raised by the spring 6, conversely, the lamp wick 3
is lowered. At the same time, the fan 15 is stopped, and the unburnt gas generated when extinguishing the fire rises due to its own draft.

In this embodiment, since the combustion exhaust gas also passes through the holes 17 of the partition plate 18 during combustion, the flow velocity distribution of the exhausted combustion exhaust gas is also high in the center as shown in FIG. This eliminates abnormal overheating of the combustion tube 13, and increases the amount of combustion exhaust gas passing through the catalyst filter 16, increasing its purification effect. Moreover, even when the fire is extinguished, the amount of unburned gas that rises through the holes 17 of the partition plate 18 increases, so that the amount of unburned gas that passes through the catalyst filter 16 also increases, and the purification effect at this time also increases.

In this embodiment, the partition plate 18 and the plate body 19 are constructed as separate bodies, but the center of the partition plate 18 may be made to protrude upward, and holes may be formed on the sides of this protrusion.

As described above, according to the present invention, it is possible to prevent the combustion exhaust gas from being unevenly distributed and to prevent the deterioration of the combustion exhaust gas characteristics.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view showing a conventional example, Fig. 2 is a longitudinal cross-sectional view showing another conventional example, Fig. 3 is a graph showing its characteristics, and Fig. 4 is a longitudinal cross-sectional view showing an embodiment of the present invention. 6 is a circuit diagram of the same, and FIG. 6 is a graph showing its characteristics. 3... Lamp wick, 7, 8... Core guide tube, 1
2... Burner, 17... Hole, 18...
...Partition plate, 19...Plate body. Name of agent: Patent attorney Toshio Nakao and 1 other person']
:・ Figure 1 Figure 2 Figure 3 Figure 4 Figure 6

Claims (2)

[Claims] (1) A lamp wick that can move up and down between the inner and outer wick guide tubes is provided, a burner consisting of an inner and outer flame tube having a plurality of pores and an outer tube surrounding them is provided above the wick, and a burner is provided above the burner. A wick-type oil combustion device in which a fan is provided through a partition plate, a hole is formed in the partition plate, and a plate body is provided to cover the hole. (2) The wick-type oil combustion device according to claim 1, wherein an upwardly protruding portion is provided in the center of the partition plate, and holes are formed on the sides of this protruding portion. Oil burning equipment.