JPS645219B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention stabilizes combustion in a pot-type oil combustor, and also eliminates bad odor during extinguishing compared to conventional pot-type oil combustors, allowing the fire to be extinguished more quickly.

Conventional pot-type oil combustors supply oil directly into a pot, vaporize the oil, mix it with combustion air, and burn the mixed gas. Since these processes are carried out together in the pot, the combustion conditions include unstable elements, and it is particularly undesirable for the vaporized portion of the oil to fluctuate at the bottom of the pot.

Immediately after extinguishing, petroleum remained on the bottom in the form of oil droplets or in a wet state, and the extinguishing time was long and the extinguishing operation was accompanied by a foul odor.

This invention is intended to improve the above-mentioned problems, and includes a pot 4 attached to the air passage 3 connected to the suction port 2 of the blower 1, and a large number of small holes 5 drilled in the side wall of the pot 4 connected to the air passage 3. In an oil combustor that opens inward and has a combustion chamber 6 above the pot 4, an air pipe 7 is provided to communicate between the outside of the pot 4 and the inside of the pot 4, and an oil feed pipe 8 is opened in the air pipe 7. This is a pot-type oil combustor in which the air pipe 7 from the connection with the oil pipe 8 to the pot 4 is sloped downward, and the other end of the air pipe 7 connected to the pot 4 may be left open or the draft of the combustion chamber 6 may be weak. Air is supplied to the pot 4 from the air pipe 7 by connecting to the upper part of the combustion chamber 6 or to the air passage. 9 is a combustion plate located in pot 4, 10
is a skeleton installed inside the combustion chamber 6, which receives combustion heat, becomes red hot, and radiates heat rays to the outside.
11 is a solenoid valve attached to the oil feed pipe 8, and 12 is an oil amount regulator. Reference numeral 13 designates an electromagnetic pump in place of the oil level regulator, which in combination with the oil level regulator 14 controls the fuel flow rate.

The oil whose flow rate has been adjusted is then supplied into the pot 4 and ignited by an ignition device (not shown). The combustion gas generated when the oil is combusted becomes lighter and rises through the pot 4 and the combustion chamber 6, and is then ignited by an ignition device (not shown). Negative pressure is created inside. For this reason, combustion air flows into the pot 4 under negative pressure through a small hole 5 formed in the pot 4 and is supplied to the oil, thereby continuing combustion. Further, the blower 1 acts to increase the pressure in the air passage 3 outside the pot 4, thereby making it easier for combustion air to flow into the pot 4.

By the way, in this invention, since an air pipe 7 communicating with the inside of the pot 4 is attached, combustion air flows into the pot 4 through the air pipe 7, similar to the small hole 5. Then, the oil whose flow rate is adjusted by the oil flow regulator 12 etc. is sent to the air pipe 7 via the oil feed pipe 8, so that combustion air and oil coexist in the air pipe 7 from the connection with the oil feed pipe 8 to the pot 4. It started to flow.

On the other hand, when the combustion continues and the pot 4 is sufficiently heated, the temperature of the air pipe 7 connected to the pot 4 becomes higher as it gets closer to the pot 4, and the oil in the air pipe 7 is accelerated to vaporize, and since the pipe 7 is thin, it becomes vaporized. The oil and the air flowing into pot 4 were instantly mixed and were blown into pot 4. In addition, the oil that could not be vaporized in the air pipe 7 has already been sufficiently preheated in the air pipe 7, and the mixed gas of air and oil flowing into the pot 4 from the air pipe 7 has a high flow rate due to the increased volume of the vaporized oil. Since the oil is blown out into the pot 4, the oil does not stay in the connection part with the air pipe 7, but becomes fine oil droplets, spreads over the entire bottom surface of the pot 4, and vaporizes.

Therefore, when the flow rate is low, most of the oil vaporizes in the air pipe 7 and becomes a mixed gas with air and is supplied into the pot 4, and when the flow rate is high, a portion of the oil is supplied to the pot 4 as a liquid. Even if oil is mixed with air, it is instantaneously vaporized on the entire bottom surface, so there is no instability in the vaporization state, and since most of the oil is premixed in the air pipe 7, combustion takes place with incomplete mixing with air. It was possible to obtain excellent combustion conditions.

Further, in this invention, since the oil pipe 8 is not connected directly to the pot 4 but to the air pipe 7, the oil pipe 8 is only indirectly heated by the heat of the air pipe 7 and does not reach a high temperature. Therefore, even if oil is present at the tip of the oil pipe 8, if the flow of oil is stopped during fire extinguishing operations, this oil will hardly vaporize, and the very small amount of oil that vaporizes will be diluted by the air flowing inside the air pipe 7. combustion cannot continue. Furthermore, there is no oil that adheres to the bottom of the pot 4, and the oil spreads over the entire bottom in the form of fine oil droplets, so combustion is completed almost instantly. Therefore, the combustion flame inside the pot 4 can be extinguished within a few seconds after the extinguishing operation, and safety is greatly improved.

In order to promote the vaporization of oil within the air pipe 7, the end of the air pipe 7 may be connected to the combustion chamber 6 so that high temperature combustion gas is blown into the pot 4, and the flow rate passing through the air pipe 7 may be In order to obtain this, a location such as the upper part of the combustion chamber 6 where there is a large pressure difference between the inside of the pot 4 and the inside of the pot 4 is desirable. In addition to this natural ventilation force, forced air may also be applied to the air pipe 7. In this case, if the end of the air pipe 7 is opened in the air passage 3 connected to the suction port 2 of the blower 1, the blower for forced air will be activated. It is convenient and can be used for both purposes.

[Brief explanation of drawings]

FIG. 1 is a sectional view of this invention, and FIG. 2 is a sectional view of the main parts. 1...Blower, 2...Suction port, 3...Air path, 4
... Pot, 5 ... Small hole, 6 ... Combustion chamber, 7 ...
Air pipe, 8...oil pipe.

Claims (1)

[Scope of Claims] 1. An oil combustor in which a pot is attached to an air passage connected to the suction port of a blower, a large number of small holes are opened in the side wall of the pot, and a combustion chamber is formed above the pot. In this pot type oil combustor, an air pipe is provided to communicate between the outside of the pot and the inside of the pot, an oil pipe is opened in the air pipe, and the air pipe is sloped downward from the connection part with the oil pipe to the pot. 2. The pot-type oil combustor according to claim 1, wherein the end of the air pipe communicating between the outside of the pot and the inside of the pot is connected to the upper part of the combustion chamber and the pot. 3. The pot-type oil combustor according to claim 1, wherein the end of the air pipe that communicates between the outside of the pot and the inside of the pot is connected to the forced air passage and the pot.