JPS61105013A - Evaporating unit for kerosene combustion device - Google Patents

Abstract

PURPOSE:To obtain an evaporating unit so as to be small amount of tar-like waste and to be able to use for a long time even in case of using degenerating deteriorated fuel oil and the like by a method wherein a wick, constituted of copper material which operates by 400 deg.C or more, is installed on the outer surface of a metal inner tube. CONSTITUTION:When an electric heater 14 is conducted by electric current and the metal inner tube 6 rises at a predetermined temperature, the fuel oil is supplied from the fuel oil supplying port 9 of a fuel pump provided addition ally. a valve body 15 is opened by a solenoid. the fuel oil supplied, is supplied to the wick 13 of the surface of the metal inner tube 6 through a fuel oil supply ing pipe 8. The fuel oil is vaporized here and injected toward a mixing pipe 3 from a nozzle 11. Circumferential air is absorbed from, the circumference of the nozzle 11 by injection power and is mixed in the mixing pipe 3 to supply for a flame port 3, then, it is burnt at the upper portion of the flame port 2. The high temperature combustion gas burnt here, flows around the metal outer tube 5 of an evaporating device main body 4 and the metal outer tube 5 is heated. As a result, the wick 13 of the evaporating chamber 7 may be heated at 400 deg.C or more.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a vaporizer for an oil combustor used in an oil combustor that evaporates and burns fuel.

Conventional technology The conventional vaporizer for oil combustor is Utility Model Application No. 55-54719.
As described in Utility Model Application No. 58-88518, etc., a fuel vaporization chamber is formed by a metal outer tube and a metal inner tube, an electric heater is installed inside the metal inner tube, and a filler is placed in the vaporization chamber. The fuel oil was evaporated into gas by increasing the temperature of the filler in the vaporization chamber using the electric heater, and then supplied to the burner. Also.

Those actually commercialized use brass or nickel wire mesh as the filler, and operate at a temperature of 250 to 300°C.

Problems to be Solved by the Invention However, when using degraded fuel that has been altered by exposure to sunlight, etc., tar-like evaporation residue accumulates in the vaporization chamber, resulting in clogging.

Means for Solving the Problems The present invention has been made in relation to the above-mentioned problem, and is comprised of a wick made of a copper material that operates at a temperature of 400° C. or higher and installed on the outer surface of a metal inner tube.

Effect: The above method leaves little tar-like evaporation residue even when fuel, etc. that has deteriorated due to sunlight irradiation is vaporized.

Less likely to get clogged.

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

One embodiment is shown in Figs. 1 to 3, in which 1 is a burner, and 2 is a burner made of a stainless wire mesh on the upper surface. A mixing tube 3 is connected to the side surface. Reference numeral 4 denotes a vaporizer main body, in which a metal inner tube 6 is eccentrically installed inside a metal outer tube 5 and joined by welding or the like to form a vaporization chamber 7 therebetween. The upper part of the vaporization chamber 7 communicates with a fuel supply pipe 8 provided with one end in contact with the metal inner pipe B through a wick 16, and communicates with a fuel supply port 9. A side portion of the vaporization chamber 7 communicates with the fuel vapor passage 1o and opens into a nozzle 11. The wick 16 is made of copper wire mesh or sintered metal, and is provided so as to be in contact with the outer surface of the metal inner tube 6. An electric heater 14 is provided inside the metal inner tube B. A valve body 15 is provided in the nozzle 11 so that the nozzle 11 can be opened and closed.

The vaporizer body 4 is provided at a portion heated by the burner 1, and the nozzle 11 is provided opposite the inlet of the mixing tube 6.

To explain the operation of this configuration, when the electric heater 14 is energized and the metal inner tube 6 rises to a predetermined temperature, a separately provided fuel pump (not shown) supplies fuel ( Oil for fuel.

(for example, kerosene, etc.). At the same time, the valve body 15 is opened by a separately provided lunoid (not shown).

The supplied fuel passes through the fuel supply pipe 8.

It is supplied to the wick 13 on the surface of the metal inner tube 6.

The fuel vapor is evaporated, passes through the fuel vapor passage 10, and is ejected from the nozzle 11 toward the mixing pipe B. Surrounding air is sucked in from around the nozzle 11 by the ejection force, mixed in the mixing pipe filter, supplied to the flame port 2, and burned above the flame port 2. This burned high-temperature combustion gas flows around the metal outer tube 5 of the vaporizer main body 4, heats the metal outer tube 5, and heats the quick release gas 13 in the vaporization chamber 7.
Heat the temperature to 4001Z or higher. The electric heater 14
is the wick 1 when the burner 1 is unburned or weakly burnt.
3 is heated to maintain the temperature of this wick 1 at 400°C or higher. The reason why the wick 16 is made of copper and its temperature is maintained at 400° C. or higher is as follows. FIG. 3 shows the evaporation residue 1 generated when 350 cc of degraded kerosene was evaporated by changing the material and temperature of the wick 16. As this picture shows.

When the material of the wick 13 is copper wire mesh, the amount of residue is smaller than that of conventionally used brass or nickel.

Further, as the temperature of the quick 13 is increased, the amount of residue rapidly decreases, and when the temperature of the quick 13 is 40.0c or higher, the amount of residue is extremely small, and when the temperature of the quick 13 is 40.0c or higher, almost no residue is generated. In this way, the vaporizer of the present invention uses a copper wire mesh for the wick 13,
Since this quick 16 operates at a temperature of 400 tl or higher, there is little generation of fuel evaporation residue.

The vaporization chamber 7 is not easily clogged.

Effects of the Invention As described above, the present invention achieves two
Even when degraded fuel that has changed in quality due to exposure to sunlight is vaporized, there is little tar-like evaporation residue, and since it is less likely to clog, maintenance and inspections are not required and it can be used for a long time.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a vaporizer for an oil combustor according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line A-A of the same sectional view. FIG. 6 is a characteristic diagram showing the change in the residual amount when the material and temperature of the wick in the same device are changed. 6...Metal inner tube, 13...Ly Tsuk.

Claims (1)

[Claims] In an oil combustor vaporizer in which a fuel vaporization chamber is formed by a metal outer tube and a metal inner tube, and an electric heater is built into the metal inner tube, the outer surface of the metal inner tube (6) is heated to a temperature of 400°C or more. A vaporizer for an oil burner, characterized in that a wick (13) made of a copper material that operates depending on temperature is installed.