JPS584015Y2 - Pot type combustion device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a pot-type combustion device that introduces liquid fuel into a bottomed cylindrical pot, vaporizes it, and burns it.

In this type of combustion apparatus used in heating appliances and the like, the intensity of combustion is usually switched by adjusting the amount of fuel supplied, and the amount of air for combustion is kept constant.

It would be most ideal if the amount of combustion air supplied was also adjusted according to the amount of fuel supplied, but this would require a considerably troublesome and complicated configuration, and therefore the strength of combustion could be switched only by the amount of fuel supplied. The current situation is that

The amount of combustion air is generally set to suit strong twist firing.

However, in the conventional method where a constant amount of combustion air is always supplied to support strong twist firing, during weak combustion, excess air is used to burn the air, leading to incomplete combustion with the generation of soot. However, due to this concern, it was difficult to widen the disparity between strength and weakness.

This idea was developed based on this idea, by improving the combustion auxiliary structure inside the pot, so that complete combustion can always be achieved in both strong and weak conditions, and as a result, a large disparity between strengths and weaknesses can be achieved. The aim is to provide a type combustion device.

An embodiment of this invention will be described below with reference to the drawings.

In the figure, 1 is a pot formed into a cylindrical shape with a bottom, and a large number of small holes 2... are bored in the circumferential side of the pot, and these small holes 2...
A fixed amount of combustion air is sequentially supplied into the pot 1 through...

An annular holding groove 3 is formed in the inner bottom of the pot 1.
A cylindrical ignition sheet 4 is mounted and held within this holding groove 3.

Reference numeral 5 denotes a knob attached between the upper edges of the ignition sheet 4, through which the ignition sheet 4 can be pulled out from the holding groove 3 during cleaning or the like.

Reference numeral 6 denotes a fuel supply pipe connected to the pot 1 so as to communicate with the holding groove 3, and liquid fuel such as kerosene is sequentially supplied to the holding groove 3 via this vibro.

A rectifying plate 7 is disposed on the inner periphery of the pot 1 at approximately the center thereof.

This rectifying plate 7 is formed in the shape of an annular plate, and is supported by supporting screws 8 through its outer periphery, and the inner periphery side faces upward inside the pot 1. It is slightly inclined.

Reference numeral 9 denotes a combustion ring that promotes the vaporization of fuel and stabilizes combustion by regulating the flow of the vaporized gas.This ring has a number of through holes 10 on the circumferential surface of a cylinder whose upper and lower ends are open.・
・It is made by drilling.

The combustion ring 9 has support pieces 11 at three equal locations on the outer periphery, and these support pieces 11...
... is held on the central axis of the pot 1 by being removably hooked to the inner circumferential edge of the rectifying plate 7.

An annular plate-shaped current blocking plate 12 is attached to the outer periphery of the lower end of the combustion ring 9 so as to be located below the rectifying plate 7 .

The current blocking plate 12 extends horizontally outward from the combustion ring 9, and is formed to have a size such that its outer diameter is slightly smaller than the inner diameter of the current regulating plate 7.

Although the combustion ring 9 and the ignition sheet 4 are arranged on the same axis, the diameter of the combustion ring 9 is smaller than the diameter of the ignition sheet 4, and the outer diameter of the flow shield plate 12 is almost the same as the diameter of the ignition sheet 4. Or slightly smaller.

Note that 13 is a rising piece integrally formed on the outer peripheral edge of the flow shielding plate 12.

Next, the operation of the above embodiment will be explained.

First, liquid fuel is sequentially supplied to the holding groove 3 via the refueling vibro, penetrates into the ignition sheet 4, and is ignited by an ignition device (not shown). The vaporized gas rises above the pot 1 while mixing with the combustion air supplied from the small holes 2.

At this point, if the combustion state is set to strong, the amount of fuel being supplied is large, so the degree of vaporization is active, and therefore the mixing ratio of vaporized gas and combustion air is at the upper level of pot 1. The combustion becomes appropriate only in area A, and combustion continues from this area as the starting point.

On the other hand, when the setting is weak, the amount of fuel supplied is small, so the degree of vaporization is small, and therefore the flow of vaporized gas is greatly influenced by the flow shield plate 12 and the rectifier plate 7. As shown by the medium broken line, the combustion ring 9 rises on the outer circumferential side in a relatively extreme meandering state.

Since the vaporized gas rises in a meandering manner in this way, the vaporized gas flows through each of the small holes 2 located in the lower part of the pot 1.
As a result, the mixture ratio reaches an appropriate ratio in the B area in the middle part of the pot 1, and combustion continues from this area as a starting point.

The combustion air supplied from each small hole 2 in the upper part is used as secondary air.

If the flow shield plate 12 were not present, the vaporized gas would rise linearly inside the pot 1 and reach area A without mixing well with the combustion air, and combustion would continue in this area. .

When this area is reached, there is an excess of air due to the combustion air supplied from the small holes 2 in the upper, middle, and lower stages, which causes the generation of soot. incomplete combustion is likely to occur.

However, with this invention, since combustion air can be efficiently mixed with the vaporized gas before reaching the A region, the above-mentioned phenomenon can be reliably prevented and complete combustion can always be achieved. In addition, since the weak combustion layer can be formed approximately in the middle part away from the inner bottom of the pot, it is possible to prevent pulsating combustion caused by the rise in temperature of the inner bottom of the pot.

Incidentally, the combustion ring 9 is cylindrical with its upper and lower ends open, and therefore air flows upward within the combustion ring 9, creating a draft effect, resulting in good and stable combustion, especially during high-twist firing. There are advantages.

Furthermore, since the meandering flow of the vaporized gas is achieved by the flow shield plate 12 attached to the outer periphery of the lower end of the combustion ring 9, only this flow shield plate 12 should have a diameter that is approximately the same as or slightly larger than the diameter of the ignition sheet 4. It suffices if the diameter is small, so the combustion ring 9
The diameter of the combustion ring 9 can be reduced.
By reducing the heat capacity of the combustion ring 9, it is possible to improve the start-up at the start of combustion, and by reducing the degree of thermal deformation of the combustion ring 9, it is possible to improve the strength.

As explained above, according to this invention, complete combustion can always be achieved regardless of whether the combustion state is set to strong or weak, so soot generation can always be prevented, and the difference in the strength of combustion can be set to a large extent. This has the effect that it can be done.

[Brief explanation of the drawing]

The drawing is a sectional view showing an embodiment of this invention. 1...Pot, 2...Small hole, 7...
... rectifying plate, 9... combustion ring, 12...
...Break plate.

Claims (1)

[Scope of utility model registration request] A bottomed cylindrical pot with many small holes for supplying combustion air on the circumference, an annular plate-shaped rectifier plate provided along the inner circumferential surface of this pot, and a cylindrical shaped pot provided on the inner bottom surface. an ignition sheet, a cylindrical combustion ring with open upper and lower ends coaxially disposed above the ignition sheet, and a cylindrical combustion ring located below the rectifying plate at the lower end of the combustion ring and arranged almost horizontally. and an annular flow shield plate attached thereto, the diameter of the combustion ring is smaller than the diameter of the ignition sheet, and the outer diameter of the flow shield plate is approximately the same diameter or slightly smaller than the diameter of the ignition sheet. This pot-type combustion device is characterized by: