JPS5862429A - Combustor for petroleum - Google Patents

Abstract

PURPOSE:To extinguish a fire in a short time by flowing air into a ventilation flue formed to a wick guide cylinder by draft action and diluting an evaporating gas remaining in space between the wick guide cylinder and a wick outer cylinder. CONSTITUTION:Evaporating gas is generated from a wick 6 because the temperature of the wick 6 is high. Since the evaporating gas has high specific gravity, it remains in space 4 between the wick guide cylinder 2 and the wick outer cylinder 3 and is burnt. Since the ventilation flue 12, which is positioned at a section upper than the wick 6 and communicated with the space 4, is formed to the wick guide cylinder 2 under a state that the wick 6 falls, air flows into the upper space 4 through the ventilation flue 12 by draft action from the lower space 4 even when the petroleum combustor is fallen sideways and a combustion cylinder 9 is separated from fire grate sections 5, 5', the evaporating gas remaining in the space 4 is diluted, and a fire is extinguished.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an oil combustor such as a portaple type kerosene stove, and provides an oil combustor that can extinguish combustion in a short period of time when tipped over or tilted.

Emergency fire extinguishing methods when tilted due to vibration can be roughly divided into:
There are two types: a shielding type, in which a shielding plate is inserted between the wick and the combustion tube to block combustion air, and a wick lowering type, in which the wick lowers automatically. Although the shield type can effectively extinguish fires even in the event of vibrations or falls, it is undesirable because it requires a complicated structure and increases costs.

However, with the wick-lowering type, simply lowering the wick takes a long time for the residual vaporized gas to burn out, so a small hole or slit is provided at the top of the wick guide tube, and the wick is lowered simultaneously through the small hole or slit. A method was used to extinguish the fire by introducing air to dilute the residual vaporized gas.

However, in the case of such a core descending type, the combustion tube is a core guide tube,
When placed on top of the core outer tube, the draft action of the combustion tube allows air to flow in through the small holes and slits in the core guide tube, diluting the residual vaporized gas and extinguishing the fire. If the oil combustor falls over and the combustion tube separates from the upper part of the core guide tube and core outer tube, the draft effect will be lost and the amount of air flowing through the small holes and slits in the core guide tube will be reduced, resulting in a longer extinguishing time. There was a drawback.

The present invention provides ventilation that is located above the wick and communicates with the space between the wick guide and the core tube when the wick is lowered and is provided between the wick guide tube and the core outer tube. By providing the channel in the core guide cylinder, the above-mentioned drawbacks of the conventional art are overcome.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In Figure 1, 1 is a fuel tank for storing fuel such as oil;
2 is a core guide tube; 3i1 is a core outer tube provided outside the core guide tube 2 with a space 4; above the core outer tube 3 and the core guide tube 2, there are fire pans 6, 6', respectively; is provided. A wick 6 is provided between the wick guide tube 2 and the wick outer tube 3 so as to be freely retractable, and one end thereof is immersed in oil in the fuel tank 1. Reference numeral 7 denotes an operation knob for moving the lamp wick 6 up and down, and an automatic lowering means 8 is provided for lowering the lamp wick 6 when it falls over or slides. 9 is a combustion tube provided on the upper part of the core guide tube 2 and the outer core f13; 10 is a case forming an oil combustor shape; 1
1 is a heat reflecting plate provided inside the case 10. 1
2 is a state in which the lamp wick 6 is lowered, and the wick guide tube 2 above the lamp wick 6 is
A ventilation passage provided in the core guide tube 2 communicates with a space 4 between the core guide tube 2 and the core outer tube 3. Its configuration is shown in FIG. 13
is an opening provided in the middle of the ventilation path 12 for air inflow.

The lamp wick 6 of the oil combustor configured in this way is lifted upward by turning the operating knob 7, and when the wick 6 is ignited by an ignition means (not shown) and burned in the combustion tube 9, the heat reflecting plate 11 4. If the oil combustor falls over in such a state, the combustion tube 9 will separate from the fire pans 6, 6' due to the impact, as shown in Figure 3, and at the same time, the automatic lowering means 8 will operate and the wick will fall. 6 descends.

However, at that point, since the temperature of the lamp wick 6 is high, vaporized gas is generated from the lamp wick 6. Since this vaporized gas has a heavy specific gravity, it remains in the space 34 between the wick guide tube 2 and the wick outer tube 3 and burns, so it takes a long time to extinguish the fire. In the lowered state, the oil combustor was located above the wick 6 and due to the space, it collapsed and the fire 11
[Even if the combustion tube 9 force 1 escapes from sections 6 and 6', the 3rd
As shown by the arrow in the figure, air flows from the lower space 4 through the ventilation path 12 into the upper space 4 due to the draft effect, and the residual vaporized gas in the space 4 is diluted and extinguished.

Note that if an open section 13 is provided in the middle of the ventilation passage 12, when the oil combustor vibrates and the lamp wick 6 falls, air will flow in through the opening 13 due to the draft action of the combustion tube 9, thereby preventing ventilation. The gas flows to both ends of the channel 120 and is extinguished by diluting the residual vaporized gas in the space 4. This opening 13iJ:
Even a small one can be sufficiently effective.3 Also, when the oil combustor falls over, it increases the draft effect of the air passage 12. Increasing the value does not adversely affect combustion.

5.Furthermore, the position of the ventilation passage 12 provided in this core guide cylinder 2 is perpendicular to the longitudinal direction of the oil combustor.As is clear from the above description, the oil combustor of the present invention is a shield type When the oil combustor falls over or vibrates, the automatic lowering means operates and the wick lowers. Since it has a simple configuration in which the vaporized gas remaining in the space between the inner cylinder and the outer core cylinder is diluted and extinguished in a short time, it can be provided as an inexpensive and highly safe oil combustor.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of an oil combustor showing an embodiment of the present invention, FIG. 2 is a perspective view showing essential parts of the core guide cylinder shown in FIG. 1,
FIG. 3 is a cross-sectional view of the main parts of the oil combustor shown in FIG. 1 in an overturned state. 2... Core guide tube, 3... Core outer tube, 4.
... Space, 6 ... Light wick, 8 ... Automatic lowering means, 9 ... Combustion tube, 1.2 ...
・Ventilation path. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2C Figure 2 2 Figure 3

Claims (2)

[Claims] (1) A core guide tube, an outer core tube provided with a space outside the core guide tube, a combustion tube detachably provided on the upper part of the core outer tube, and the core guide tube. The oil combustor is provided with an air passage in the wick guide tube that communicates with a space between a wick that can freely appear and retract between the wick and the outer tube, and an automatic sieve that lowers the wick when the wick is vibrated or tilted. (2) The oil combustor according to claim 1, wherein an opening for air inflow is provided in the middle of the ventilation passage.