JPH0324982Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to an oil combustor that has a rapid start-up of combustion through rapid heating.

[Conventional technology]

Conventionally, oil combustors are known in which a fuel pipe is attached to a pot with a large number of small holes in the side wall, and combustion air is supplied through the small holes to vaporize, mix, and burn fuel within the pot. The fuel supplied to the pot flows along the bottom of the pot and reaches the center, during which time the petroleum fuel is evaporated and combusted by air supplied from the small holes.

[The problem that the idea aims to solve]

In pot-type oil combustors, the pot and auxiliary combustion device have a large heat capacity, and it takes a long time for the temperature of each part to become uniform.Furthermore, combustion air supplied from a blower flows outside the bottom of the pot, so it is constantly air-cooled. This caused the fuel to evaporate at the bottom of the pot. In addition, incomplete combustion gas is discharged until stable combustion is achieved, and there were many requests for a combustor that can achieve stable combustion within a short time after ignition operation.

[Means to solve problems]

This idea shortens the time from ignition to stable combustion by providing a large number of small holes 1' in the side wall.
An auxiliary combustion device 9 consisting of a disc or a ring plate is installed in the pot 1 with an open top, and a fuel pipe 5 supplies fuel to the inner bottom of the pot 1, and combustion air is supplied into the pot 1 from a small hole 1'. In an oil combustor equipped with a blower 6, an evaporating dish 3 whose peripheral edge is bent upward along the side wall of the pot is provided in the pot 1, and the evaporating dish 3 is provided with a plurality of protrusions 2 on the lower side. A preheating/ignition heater 7 is formed from the side wall of the pot 1 to form a gap with the bottom surface of the pot and above the evaporating dish 3, and the fuel pipe 5 extends into the pot 1 with its tip positioned above the evaporating dish 3. It is an oil combustor.

[Effect]

This device having the above configuration operates the blower 6 after energizing the preheating/ignition heater 7 for a certain period of time to supply combustion air into the pot 1 from the small hole 1', and at the same time drips fuel from the tip of the fuel pipe 5. supply. When the preheating/ignition heater 7 is energized, it becomes red hot and radiates heat rays to the surroundings, causing damage to the evaporating dish 3 and pot 1.
The side wall and auxiliary combustion device 9 are heated, and the fuel dripping from the tip of the fuel pipe 5 does not flow to the bottom of the pot 1, but is caught by the evaporation plate 3, and starts evaporation and combustion by the heat of the ignition heater 7, which also serves as preheating. be.

By the way, since the evaporating dish 3 has a dish shape with its periphery bent upward, and is separated from the bottom of the pot 1 by the protrusion 2, the evaporating dish 3 is evaporated by the radiant heat from the preheating ignition heater and the combustion flame. When the evaporating dish 3 is heated, this heat is not conducted to the bottom of the pot 1 and the evaporating dish 3 itself becomes high in temperature. Therefore, the fuel dropped into the evaporating dish 3 quickly vaporizes and stabilizes in a short time. It became possible to obtain a combustion condition that

〔Example〕

1 is a pot that is open at the top and has many small holes 1' in the side wall; 9 is a combustion auxiliary device consisting of a disk or ring plate installed inside the pot 1; and 5 is a fuel whose tip protrudes into the pot 1. A pipe 4 is a fuel pump attached to a fuel pipe 5, which pumps fuel from an oil tank (not shown) into a pot 1 through a fuel pump 4.
supply within. Reference numeral 3 indicates an evaporating dish located on the inner bottom surface of the pot, and 2 indicates a plurality of protrusions provided on the lower surface of the evaporating dish 3. The periphery of the evaporating dish 3 is bent upward along the side wall of the pot, and the protrusions are 2 is provided with a space between it and the bottom of the pot. The tip of the fuel pipe 5 is located above the evaporating dish 3, and a preheating/ignition heater 7 projects above the evaporating dish 3 from the side wall of the pot between the evaporating dish 3 and the auxiliary combustion device 9.

Reference numeral 8 designates an anti-vibration device for stopping combustion due to vibrations such as earthquakes, 10 a red-hot element located above the pot 1, and 11 a glass outer cylinder forming a wall of the combustion chamber.

〔effect〕

As described above, in this invention, the evaporating dish 3 is attached to the bottom of the pot 1 through the gap, and the fuel pipe 5 is connected to the bottom of the pot 1.
Since it is extended inward and positioned above the evaporating dish 3, the evaporating dish 3 conducts almost no heat to the bottom surface of the pot 1 and can maintain a high temperature. In addition, since the fuel does not flow into the pot 1 but evaporates in the evaporating dish 3, the fuel evaporates quickly due to the action of the high-temperature evaporating dish 3, and the rise of combustion at the time of ignition is very quick. The transition to stable combustion now takes only a short time.

In addition, the combustion heat inside the pot 1 heats the evaporating dish 3, and since the bottom of the pot 1 no longer receives direct combustion heat, it is now possible to maintain the pot at a low temperature. It became possible to use inexpensive materials, and even if the evaporating dish 3 was added, the cost increase would be negligible.

In addition, since the evaporator dish 3 is at a high temperature at the start of combustion due to the function of the preheating and ignition heater, it is possible to send a large amount of fuel immediately after ignition, similar to that during steady combustion, and this can occur when sending a small amount of fuel. This has the advantage of preventing fuel from turning into tar.

[Brief explanation of the drawing]

The drawing is a sectional view of the main parts of this device. 1...Pot, 1'...Small hole in pot side wall, 2
...Protrusion, 3...Evaporation plate, 5...Fuel pipe, 6
...Blower, 7...Ignition heater for preheating, 9...
Auxiliary combustion device.

Claims (1)

[Scope of utility model registration request] A auxiliary combustion device 9 consisting of a disc or a ring plate is installed inside the pot 1, which has a large number of small holes 1' in the side wall and is open at the top. In an oil combustor equipped with a blower 6 that supplies combustion air from small holes 1' to the pot 1, an evaporating dish 3 whose peripheral edge is bent upward along the side wall of the pot is provided in the pot 1. A plurality of protrusions 2 are provided below to form a gap with the bottom of the pot, and an ignition heater 7 for preheating is protruded from the side wall of the pot 1 above the evaporating dish 3, and the fuel pipe 5 extends into the pot 1. An oil combustor characterized in that the tip thereof is located above the evaporating dish 3.