JPS5819618A - Liquid fuel burner - Google Patents

Abstract

PURPOSE:To enable the use of a simple-structured gas burner as a burner and to generate burning evaporating heat through a burning heat return, by installing an electric heater and a heat pipe for returning a burning heat at an evaporating part of a fuel evaporating chamber. CONSTITUTION:A PTC heater detects that a fuel evaporating part 9 is heated to a temperature which is enough high to evaporate fuel, and an oil feed pump 6 leads liquid fuel to a fuel evaporating part 9 to evaporate the fuel. Meanwhile, an electromagnetic valve 16 is opened, fuel steam and combustion primary air 20 are led to a burner 1 and ignited to form a burning flame 18 and heat a heat pipe 13. The heat is transferred to the fuel evaporating part 9, the power of the PTC heater is brought to approximately zero, and afterwards, the heat for evaporating the fuel is received from the burning flame 18.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid fuel combustion device that can vaporize liquid fuel in advance and burn the vaporized liquid fuel by using a combustion section similar to a gas combustor. be.

Conventionally, the above-mentioned vaporization type combustor uses electric equipment such as an electric heater to vaporize liquid fuel.

These consume a lot of electrical energy,
Additionally, there is a structure in which the combustion heat is returned to the vaporization section, but this has the drawback of becoming a complicated structure.

The present invention has been made in view of the above points, and the fuel evaporation chamber is formed of a surrounding metal with good heat conduction, and the plated metal is equipped with an electric heating device for applying heat to form an evaporation section, and a combustion chamber. By providing a pipe and a t when transferring heat,
It is possible to provide a liquid fuel combustor that can have a simple structure, can effectively return combustion heat, can save 4 tons of electric energy, and can be combusted by a combustor similar to a gas combustor. and t purposes.

The present invention will be described below with reference to embodiments shown in the drawings.

1 and 2, 1 is a burner head generally weighed in a gas combustor, a burner consisting of a mixing tube, 2
is an adjustable nozzle. A combustion chamber 3 is surrounded by a combustion cylinder 4 and is located above the burner 1. 5 is a liquid fuel tank,
Reference numeral 6 designates an oil feed pump incorporated in the middle of the oil feed pipe 7, and 8 represents a fuel layer pipe.

9 is a fuel evaporation section, which is made of a metal 10 with good heat conduction and has an evaporation chamber 1.
1″4I: Formed to surround, oil feed pipe 7, fuel layer pipe 8
, and a feed pipe 12 for the evaporated fuel opens into the evaporation chamber.

Evaporation chamber 11't - A liquid block diode heat pipe 13 is provided on the lower surface of the metal 10 to be formed, and it is better to have the evaporation part at the tip of the heat pipe 13 facing into the combustion chamber 3. It is screwed onto the combustion tube 4. Since the combustion heat of this heat pipe 13 is about 500° C., the pipe body is made of stainless steel, mercury is used as the working medium, and urethane, glass wool, asbestos, etc. are used as the heat insulating material. In addition to the heat pipe 13, the bottom surface of the evaporation chamber 11 is equipped with a PTO heater 14 as an electric heating device.
is provided. The fuel evaporation section 9 is entirely covered with a heat insulating material 15.
covered by. A fuel vapor feed pipe 12 that opens into the fuel evaporator 9 is connected to the regulating nozzle 2 via a solenoid valve 16.
A pressure valve 17 is provided in the middle of the fuel tube 8 and opens when the pressure inside the evaporation chamber 11 exceeds a specified pressure. 18 is combustion flame, 19 is combustion secondary air,
20 is the combustion-firebox air.

Next, the operation of the embodiment having the above configuration will be explained. First, when the metal 10 of the fuel evaporator 9 is heated by the PTO heater 14 and a heat-sensitive element such as a thermistor (not shown) detects that the temperature has reached a temperature sufficient for fuel evaporation, an oil supply bonzoro is sent to the liquid fuel tank 5. The fuel χ is guided into the evaporation chamber 11 of the fuel evaporation section 9 and the fuel is evaporated. When the pressure inside the evaporation chamber 11 increases and the solenoid valve 16 is opened, fuel vapor is ejected from the regulating nozzle 2, and the negative pressure at that time leads the combustion secondary air 20 into the burner 1, and the fuel vapor is mixed with. When the burner 1 is ignited by an ignition device (not shown) provided above it, a combustion flame 18 is formed, and at the same time, combustion secondary air 19 flows into the combustion chamber 3. combustion flame 18
When a combustion flame 18 is formed, the heat pipe 13 is heated and the heat is transferred to the metal 10 of the fuel evaporator 9, so the electric power of the PTO heater 14 becomes almost 0, and after the combustion flame 18 is formed, the fuel is no longer supplied. It receives heat from the combustion flame 18 to evaporate it. Also, the pressure valve 17tj: Safety f! in case the pressure inside the evaporation chamber 11 becomes abnormally high! Make a motion to release the pressure as a platform.

In the above embodiment, instead of the PTO heater 14Y, a normal electric heater χ may be used as the electric heating device.

As described above, in the present invention, an electric heating device and a heat pipe are installed in the evaporation section of the fuel evaporation chamber to dissipate the combustion heat, so a gas combustor with a simple structure can be used as the combustor. This has the excellent effect of saving power since the fuel evaporation heat can be covered by the return of combustion heat during periods other than during startup.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a liquid fuel combustor according to an embodiment of the present invention; FIG. 2 is a detailed cross-sectional view of the fuel evaporation section of the liquid fuel combustor of FIG. 1. 9...Fuel evaporation section, 10...Metal, 11...Fuel evaporation chamber, 13...Heat pipe, 14...PTO thermistor. Representative Asamura Kōgai 4 people Figure 1

Claims (1)

[Claims] The fuel evaporation chamber is surrounded by a metal with good heat conduction, and the plated metal is equipped with an electric heating device that adds heat to serve as the evaporation section, a heat pipe that transmits combustion heat, and TV and TV features. liquid fuel combustor.