JPH01203811A - liquid fuel combustion equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

2. Description of the Related Art A conventional liquid fuel device is constructed as shown in FIG. That is, in Fig. 4, 1 is a fuel nozzle that injects fuel, 2 is a vaporization tube that vaporizes fuel (indicated by a broken line in the figure), and is elongated (formed). 3 is a vaporization cylinder that vaporizes fuel and air. A mixing chamber for mixing, 4 a fuel passage, 5 a fuel passage 4
6 is a flame port, 7 is a combustion chamber wall forming a combustion chamber, and 8 is a flame. 9 is a heater (indicated by a broken line in the figure) buried in the bottom of the vaporization cylinder.

The operation of the combustion apparatus configured as described above will be explained below.

First, the heater 9 is energized, and when the vaporization tube 2 reaches a predetermined temperature, combustion air and liquid fuel are sent into the vaporization tube 2, and the liquid fuel is vaporized by the vaporization tube 2 and mixed with air to form a mixing chamber. Sent to 3. This mixed gas then passes from the mixing chamber 3 through the fuel passage 4, reaches the flame port 6 from a large number of fuel supply passages 5, and is ignited by an appropriate ignition means to become a flame 8.

Problems to be Solved by the Invention However, in the above-mentioned conventional combustion device, since the vaporization cylinder 2 is a simple cylinder, the air supplied from the inlet and the fuel vaporized in the vaporization cylinder are hardly mixed, and the mixture chamber 3 The mixed gas is sent to the fuel passage 4 with a non-uniform concentration.
The fuel passes through a large number of fuel supply lines 5 and reaches the flame outlet 6. As a result, a difference in the concentration of the mixed gas occurs due to the flame port 6, which causes deterioration of the combustion state such as local blow-off and generation of CO.

In addition, since the vaporization tube 2 is cylindrical, a part of the fuel ejected from the nozzle 1 into the vaporization tube 2 does not hit the wall surface of the vaporization tube (sometimes it is sent to the mixing chamber together with the air as a liquid). In the mixing chamber, fuel that did not vaporize accumulated and caused the generation of tar.

The present invention solves the above-mentioned conventional problems.The present invention completely vaporizes the ejected fuel in the vaporization cylinder, and mixes the vaporized fuel and air sufficiently in the vaporization cylinder to stabilize combustion and turn it into tar. The purpose is to prevent

Means for Solving the Problems In order to achieve this object, the present invention has a structure in which a baffle made of twisted metal plate is arranged near the outlet of the vaporizing cylinder.

Effect: With the above configuration, the fuel that is scattered without being vaporized near the inlet of the vaporization tube advances to the outlet of the vaporization tube along with the combustion air, but there is a baffle near the outlet that is kept at a high temperature by heat conduction from the vaporization tube. Yes, the scattered fuel hits this buckle and vaporizes. The baffle also serves to stir the airflow, so the vaporized fuel and air are sufficiently mixed.

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

1 to 3, reference numeral 10 denotes a vaporization tube that vaporizes liquid fuel (indicated by a broken line in the figure), and is long and narrow (formed). Reference numeral 11 denotes a fuel nozzle that spouts liquid fuel into the vaporization tube 10. , which communicates with the pump 12. Reference numeral 13 denotes an air passage that guides combustion air from the blower 14 to the carburetor cylinder 10, and the air passage opens into the inlet portion 10a of the carburetor cylinder 1o together with the fuel nozzle 11. In the mixing chamber provided at the outlet part 10b of
It communicates with fuel passages 16 on both sides. A large number of fuel supply passages 17 are branched from the fuel passage 16, and the other end of the fuel supply passage 17 penetrates the combustion chamber wall 18 and opens into the combustion chamber 19, forming a flame port 20.

Here, the two combustion chamber walls 1B face each other, and 22 is a vaporizer cylinder cover provided between the combustion chamber 19 and the vaporizer cylinder 10;
is a metal baffle installed near the outlet of the vaporizer cylinder 11,
It is fixed to the vaporizer cylinder 10.

24 is a heater embedded in the vaporization cylinder 11.

The operation of the above configuration will now be described.

First, the heater 24 is energized, and when the vaporization cylinder 10 reaches a predetermined temperature, the blower 14 is operated and combustion air is sent to the vaporization cylinder 10 through the air passage 13. Also pump 12
operates at the same time, and fuel flows from the fuel nozzle 11 to the carburetor cylinder 10.
It is ejected towards the floor inside. Most of the fuel that hits the floor vaporizes, but some of it does not vaporize and scatters, reaching the exit area along with the combustion air. At this time, the baffle 23 provided near the outlet of the vaporizer cylinder 11 is kept at a high temperature.
The fuel that is not vaporized and is scattered collides with this baffle 23 and is vaporized. Moreover, since this baffle 23 plays the role of stirring the air flow, the vaporized fuel and combustion air are sufficiently mixed and have a uniform concentration, and are sent to the mixing chamber 15. The mixed gas sent to the mixing chamber 15 flows into the fuel passage 16 as shown by the arrow in FIG. Further, the mixed gas advances from the fuel passage 16 to a fuel supply passage 17 which is branched into many branches, and is ejected from the flame port 20 into the combustion chamber 19 .

When the mixed gas coming out of this flame port 20 is ignited, a flame 21
is formed and combustion continues. At this time, the concentration of the mixed gas supplied to the flame ports 20 is uniform, so that CO is not generated or blown off in some of the flame ports 20, and stable combustion is achieved.

Effects of the Invention As described above, by providing a baffle near the outlet of the carburetor cylinder, the present invention can completely vaporize the fuel injected into the carburetor cylinder, prevent the generation of tar, and prevent vaporization. It is also possible to sufficiently mix the fuel and combustion air, reducing the amount of CO at some combustion ports caused by the difference in concentration.
It can prevent occurrence and blow-off.

[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, Fig. 2 is a sectional view of the same as seen from the top, Fig. 3 is a plan view of the liquid fuel combustion device, and Fig. 4 is a diagram of a conventional combustion device. FIG. 10... Carburizer cylinder, 19... Combustion part, 2
2... Vaporization f1M, 23... Baffle.

Claims (1)

[Claims] A horizontally elongated vaporizer tube with one end as an inlet for fuel and air and the other end as an outlet for mixed gas, and a combustion section arranged along the longitudinal direction of the vaporizer tube and supplied with the mixed gas from the outlet of the vaporizer tube. and a vaporizer cylinder lid that partitions the combustion section and the vaporizer cylinder, and a baffle made of twisted metal plate is provided near the outlet of the vaporizer cylinder.