JPS6335204Y2 - - Google Patents

Description

[Detailed description of the invention] This invention stabilizes the combustion state in the flame spreader of an oil combustor, making it easier to manufacture, increasing durability, and preventing abnormal combustion.

Conventionally, the combustion flame from the flame expansion device of this type of oil combustor usually reaches over 1400℃, and this temperature convects inside the room together with the combustion gas, raising the room temperature, and the heat rays generated from the combustion flame are radiant heat. It can be used for heating. On the other hand, the flame expansion device itself becomes high temperature, and the area around the double-tube combustion tube and core housing tube connected below the flame expansion device also becomes high temperature due to heat conduction, which directly affects the amount of oil vaporized from the wick. It was hot.

As a means of stabilizing the amount of oil that vaporizes from the core under such conditions, each part is cooled by the circulation of air used for combustion, but the air circulation is carried out by the draft of the combustor itself. If the flow of air is obstructed by the accumulation of cotton in the room, the temperature around the core housing cylinder will rise and the amount of oil vaporized will increase. This caused abnormal combustion.

This idea stabilizes the combustion of an oil combustor using such a flame spreader, by supplying combustible gas to the outside of the flame spreader 1, and spreading combustion from the inside and outside of the flame spreader 1. This relates to a combustor that produces white-yellow flame combustion by supplying air, and at least the top plate 2 of the flame spreader 1 is made of heat-resistant glass or fine ceramics. 4 is a wick installed in the wick housing cylinder 5, and 6 and 6' are inner and outer flame tubes, in which oil vaporized from the wick 4 is mixed with air and partially combusted; 6. Flammable gas is supplied to the outside of the flame spreader 1 connected above. Fig. 2 shows an example in which an inner/outer flame cylinder is not used, and the petroleum vaporized from the wick 4 is partially combusted by the air controlled by the outer baffle plate 7 and the inner baffle plate 8, and gases into flammable gas. is supplied to the outside of the flame spreader 1. 9 is an outer cylinder located outside the flame spreader 1;
The generated draft has the function of sucking combustion air from inside and outside of the wick housing cylinder 5 and supplying it to the flame spreader.

Reference numeral 3 denotes a fin attached downward from the top plate 2 of the flame spreader 1, which maintains a gap with the lower plate 10 of the flame spreader 1 and supplies the combustion flame along the flame spreader top plate 2. It gives swirling properties to the air.

With the above configuration, when the wick 4 is ignited, the vaporized petroleum gas becomes combustible gas and is supplied to the outside of the flame spreader 1, causing an air flow inside the flame spreader 1 mainly along the lower surface of the top plate 2. The flame spreader 1 is spread out thinly by the airflow supplied from outside the flame spreader 1, and burns with a long flame. The heat rays generated from the combustion flame heat the flame spreader top plate 2 from above.

In this invention, the flame expander top plate 2 is made of heat-resistant glass or fine ceramics, so it has strong heat-resistant strength and sufficient dimensional uniformity, and since it is formed by firing an amorphous material, it can be produced in large quantities and at low cost. It is available and can be used as a main part of an oil combustor.

In addition, heat-resistant glass and fine ceramics commonly have low thermal conductivity, so it is difficult to transfer the amount of heat received to other parts, including the lower plate 10 of the flame spreader.
Since the temperature of the inner and outer flame cylinders 6, 6' and the internal rectifying plate 8 is greatly reduced by the amount of heat from the flame expander 1,
There is almost no fluctuation in the amount of oil vaporized from
Abnormal combustion is extremely unlikely to occur.

Therefore, when the resistance of the air flow path increases due to things such as dryness, abnormal combustion tends to occur suddenly when the room temperature reaches around 25℃, but this characteristic is almost no longer observed and the combustion condition has stabilized. It is.

In addition, since a large amount of combustion air rising from inside the core housing cylinder 5 flows along the lower surface of the top plate 2, the top plate 2
By attaching fins 3 to the bottom surface and bending the direction, the air flow has swirling properties, and even if the concentration of the rising combustible gas changes, it can be made uniform, and the length of the combustion flame can be made uniform. It is. Further, since the top plate 2 is made of ceramic, the fins 3 can also be constructed as one piece, and there is almost no increase in the cost of parts.

Furthermore, if the fins 3 are used to maintain the gap between the lower plate 10 of the flame spreader and the flame spreader 1, the heat transfer will be further reduced and the combustion performance will be better than when the flame spreader is assembled using metal plates or the like inside the flame spreader 1. .

[Brief explanation of the drawing]

1 and 2 are sectional views of essential parts showing an embodiment of this device, and FIG. 3 is a diagram of the same parts. 1...Flame spreader, 2...Flame spreader top plate, 3...
Fins on the top plate.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A combustor that produces white-yellow flame combustion by supplying combustible gas to the outside of the flame expansion device 1 and supplying combustion air from the inside and outside of the flame expansion device 1. At the time, flame spreader 1
An oil combustor whose top plate 2 is made of heat-resistant glass or fine ceramics. (2) Fins 3 are integrally formed below the flame spreader top plate 2 made of heat-resistant glass or fine ceramics, and the air supplied from inside the flame spreader 1 is given swirling properties. An oil combustor according to claim 1 of the utility model registration claim.