JPS6080011A - Liquid fuel combustion apparatus - Google Patents

Abstract

PURPOSE:To prevent abnormal combustion because of condensation of gasified fuel, as well as to always keep the air/fuel ratio constant, by providing an air intake port, which is connected to a combustion chamber in the above part of a burner, to a fuel gasifying means. CONSTITUTION:An air intake port 4 on the top of a vaporizing chamber 3 is connected by a pipe to the secondary combustion chamber 13 in the above part of a burner 12, in order to take in exhaust gas from the burner 12. The combustion gas in the vaporizing chamber 3 is sucked toward a gas nozzle 7 by the sucking effect which is produced when an air flow from a burner fan 9 is injected from an air nozzle 8, and it is injected from the gas nozzle 7, together with exhaust gas which flows into the vaporizing chamber 3 from the air intake port 4. Accordingly, the rate of gasified fuel injected from the gas nozzle 7 is changed only by the air flow injected from the air nozzle 8, and the excess fuel stays and condenses in the gasifying chamber 3, and gets into liquid fuel again. In this combustion apparatus, exhaust gas from the burner 12 is taken into the vaporizing chamber 3 from its air intake port 4, so that condensation of gasified fuel can be prevented. Besides, the consumption of heat of a heater 6 can be saved because vaporization can be promoted by the heat of exhaust gas.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a vaporizing liquid fuel combustion device.

Configuration of conventional examples and their problems In general, vaporization type combustion devices supply fuel into a vaporization chamber heated to a high temperature, vaporize it instantly, and inject this vaporized gas into a burner using the gas pressure. B: Obtain air to be sucked in by the lid effect and burn. Therefore, this combustion apparatus has the advantage that the ratio of air and vaporized gas is always constant, so that combustion can be varied over a wide range. However, since the vaporized gas is injected by increasing its pressure, the diameter of the nozzle that ejects the vaporized gas must be extremely precise and small, and if used for a long time, tar will adhere and cause combustion. There was a problem that had a negative impact.

Therefore, the inventor of the present invention devised a combustion device as shown in FIG. 2 as a solution to such problems.

That is, in FIG. 2, 1 is a fixed tank that forms a constant oil level, 2 is a cartridge tank that can be attached to and detached from this fixed tank 1 and supplies liquid fuel to maintain a constant oil level, and 3 is in communication with the fixed tank 1. A vaporizing chamber which maintains the same oil level and has an air intake port 4 above it communicating with the atmosphere; 5 is a vaporizing element suspended within this vaporizing chamber 3 and having a heater 6 above it; The liquid fuel sucked up by the element 5 is vaporized by the heat of the heater 6. 7 is a gas nozzle that injects the gasified fuel into the burner 12 in the vaporization chamber 3; ll'11
: The gas is sucked from the vaporization chamber 3 and ejected from the tip of the gas nozzle/I/7 together with the air flow ejected from the air nozzle/1/8, and is combusted in the burner 12 via the mixing pipe 11. Also, mixing tube 11
The fuel that has condensed inside is returned to the vaporization chamber at the pump 10.

With this configuration, liquid fuel is sucked into the vaporization element 5 and vaporized by the heat of the heater 6, filling the vaporization chamber 3.

The gasified fuel in the vaporization chamber 3 is sucked together with the air flowing in from the air intake port 4 by the ejector action that occurs when the air flow from the burner fan 9 is ejected from the air nozzle 8, and is ejected from the gas nozzle/I/7. Therefore, the gasified fuel ejected from Ganunozu/I/7 is
Since the ratio of the fuel to air flow is always constant, good combustion can be obtained more often than not because the ratio of the fuel to air flow is changed according to the ejected air flow. In addition, since the vaporized fuel is sucked in by the air flow from the air nozzle 8, the nozzle (V) may have a large diameter, and even if tar or the like accumulates, it will have little effect and will ensure good combustion for a long period of time. is obtained.

However, according to this configuration, the external air flowing in from the air intake port 4 cools the gasified fuel, so that ((the gasified fuel condenses and the particles of the gasified fuel sent to the burner 12 become large, This was causing abnormal combustion such as yellow fire and nuisance.Also, when gasified fuel comes into contact with air, it tends to turn into tar, which increases tar adhesion and is fully effective in preventing harmful effects on combustion. There were also problems that made it impossible.

OBJECTS OF THE INVENTION The present invention was made in view of the problems listed in item L, and its overall purpose is to suppress abnormal combustion and reduce tar production.

Structure of the Invention In order to achieve the second object, the present invention provides a liquid fuel supply means, a fuel gasification means for gasifying the liquid fuel, a burner for burning the generated canned fuel, and the generated gasified fuel. The fuel gasification means is provided with an air intake port that communicates with the combustion chambers on both sides of the burner J.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings, but the same parts as the conventional example will be given the same numbers and the explanation will be omitted.
To explain only the different parts, the air intake port 4 above the vaporization chamber 3 is connected to the secondary combustion chamber 13 above the burner 12, and is adapted to take in the combustion exhaust gas from the burner 12.

In the above configuration, the fuel vaporized gas in the vaporization chamber 3 is sucked together with the combustion exhaust gas flowing in from the air intake port 4 by the suction effect that occurs when the air flow from the burner fan 9 is ejected. , is ejected from the gas nozzle 7. Therefore, the gasified fuel ejected from the gas nozzle 7 changes only according to the air flow ejected from the air nozzle 8, and the excess gasified fuel accumulates and condenses in the vaporization chamber 3, becoming liquid fuel again.

Here, in this combustion device, the air intake port 6 and 7 of the vaporization chamber 3 are
Since the combustion gas from the burner 12 is taken in from 4, the heat can suppress dew condensation on the gasified fuel.

Further, since vaporization can be promoted by the heat of the combustion gas, the heat generated by the heater 6 can be reduced and resources and space can be saved. Furthermore, since the gasified fuel in the vaporization chamber 3 can be isolated from oxygen in the atmosphere, it is possible to suppress the generation of tar from the gasified fuel.

Effects of the Invention As described above, according to the present invention, with a simple configuration, it is possible to keep the air-fuel ratio constant at all times and at the same time suppress abnormal combustion due to dew condensation of the gasified fuel. In addition, the vaporization of the liquid fuel in the vaporization chamber is promoted to save resources and space, and the generation of tar from the gasified fuel in the vaporization chamber is suppressed to ensure stable combustion, which has great effects.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a liquid fuel combustion device according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional liquid fuel combustion device. 1... fixed tank, 3... vaporization element,
4... Empty 7 bays;' Air intake, 5... Vaporization element, 6... Heater, 7... Gas nozzle, 8...・Air nozzle, 9... Burner fan, 12...
・Burner, 13...Secondary combustion chamber.

Claims (1)

[Claims] a liquid fuel supply means, a fuel gasification means for vaporizing the liquid fuel from the liquid fuel supply means, a burner for burning the gasified fuel from the fuel gasification means, and gasification generated by the fuel gasification means. and an air supply means for supplying fuel to the burner by suction, the fuel gasification means is provided with an air intake port, and the air intake port is communicated with a combustion chamber above the burner.