JPS609547Y2 - liquid fuel combustion equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vaporization-type combustion device that vaporizes liquid fuel and mixes the vaporized fuel with air to combust it. Explain in detail.

1 is mainly a liquid fuel combustion device, 2 is a large number of flame holes 3 on the side wall
It is an inner cylinder with a bottom, and the center of the bottom is curved, and an opening 5 is provided in the curved plane 4, and the peripheral edge 6 of the opening 5 is bent upward.

Also, among the flame holes 3, there are three rows of flame holes 3 on the open end 7 side of the inner cylinder 2.
The hole diameter is made larger than that of the three rows of flame holes 3'' on the bottom side, and the pitch interval is also made small.

8 is an outer cylinder surrounding the inner cylinder 2.

Reference numeral 9 denotes an inverted bottomed vaporizing cylinder, and its open end 10 is fixed to the bottom of the inner cylinder 2 to cover the opening 5.

Reference numeral 11 denotes a blower tube that penetrates the outer cylinder 8 and is inserted into the opening 5 with a gap 12, and the tip open end 13 of the blower tube 11 faces the closed surface 14 of the vaporizing tube 9, and the open end 13 has a A slanted annular ring 15 is attached to narrow the tip.

16 is a spray nozzle arranged inside the blower tube 11.

17 is a fan that sends combustion air to the blower tube 11.

Reference numeral 18 denotes an ignition burner that faces into the inner cylinder 2 from the side of the main body 1, and a small-capacity spray nozzle 20 and an ignition electrode 21 are arranged in a holder 19 that is attached through the inner and outer cylinders.

Furthermore, the holder 19 is attached so that the flame of the ignition burner 18 is ejected in an eccentric direction within the inner cylinder 2, that is, in a tangential direction of the vaporizing cylinder 9, as shown in FIG.

22 is an air intake hole provided in the holder 19, and 23 is a cold air outlet provided in the blower tube 11.

24 is a pump that pumps liquid fuel to both nozzles; 25 is a solenoid valve that opens the fuel path to the nozzle 20 of the ignition burner;
6 is a solenoid valve that opens the fuel path to the nozzle 16.

The present invention has the above structure, and when the pump 24 is driven and the fan 17 is operated, air is supplied into the holder 19 from the air intake hole 22 and is also blown into the inner cylinder 2 from the flame hole 3.

Then, when the solenoid valve 25 is opened and a voltage is applied to the ignition electrode 21, the liquid fuel sprayed from the nozzle 20 is transferred to the holder 19.
The air-fuel mixture is mixed with primary air supplied within the ignition electrode 21, and the mixture is ignited by a spark generated at the ignition electrode 21.

When the ignition burner 18 is ignited, the flame of the burner 18 is ejected in the tangential direction of the vaporization tube 9, swirls around the vaporization tube 9, and evenly heats the entire circumference of the vaporization tube 9.

Then, when a thermostat (not shown) or the like detects that the vaporization cylinder 9 has been sufficiently heated and the solenoid valve 26 is opened, the liquid fuel is sprayed onto the closed surface 14 of the heated vaporization cylinder 9 and vaporized, and at the same time The air blown from the blower tube 11 is also heated, and the vaporized fuel and heated air flow through the gap a between the annular ring 15 and the vaporizer tube 9.
1 The mixed fuel mixes while passing through the air mixture chamber b surrounded by the vaporization tube 9, the annular ring 15, and the curved plane 4, and the gap C between the opening 5 periphery 6 and the blower tube 11, and the mixed fuel flows into the flame hole 3. The fuel is ejected from the ignition burner 18 and ignited by the flame of the ignition burner 18, causing combustion.

When this main combustion is confirmed, the solenoid valve 25 is closed, and from then on, the vaporizing cylinder 9 is heated by the combustion flames formed from the three rows of flame holes 3'' on the bottom side of the inner cylinder 2, and steady combustion is performed. .

Therefore, according to the present invention, the ignition burner is burned only at the time of ignition,
After that, the ignition burner was extinguished, so the combustion noise of the device was small, and the ignition burner was oriented eccentrically inside the inner cylinder, so the flame ejected from the burner swirled around the vaporization cylinder, and the flame from the burner circled around the vaporization cylinder. Because it is heated evenly, the start of main combustion is quick, and the vaporization cylinder is not locally heated and vaporization becomes uneven, which does not adversely affect combustion.

Furthermore, as mentioned above, since the flame of the ignition burner is present all around the circumference of the vaporizing cylinder, the ignition of the fuel ejected from the flame hole 3 is instantaneously and smoothly carried out all around the circumference, and unignited fuel is prevented from entering the inner cylinder. This eliminates the possibility of stagnation and explosive ignition.

Furthermore, among the flame holes in the inner cylinder, the flame hole on the open end side was used for combustion, and the flame hole on the bottom side was used for self-heating, and the difference in input between both flame holes was determined by the difference in hole diameter and number of holes. Therefore, there is no need to install a new burner for self-heating or to take measures to control input, making the device extremely simple.

As described above, the present invention comprises a bottomed inner cylinder having a large number of flame holes in the side wall and an opening at the center of the bottom, an outer cylinder surrounding the inner cylinder, and an opening at the bottom of the inner cylinder. an inverted bottomed vaporizer tube that stands upright covering the vaporizer tube, a blower tube that is inserted through the opening with a gap and opens into the vaporizer tube, and liquid fuel is sprayed from inside the blower tube onto the closed surface of the vaporizer tube. It is equipped with a nozzle and an ignition burner directed eccentrically into the inner cylinder from the side of the main body.It is an extremely useful liquid with low combustion noise, quick start-up, good ignitability, and simple structure. A fuel combustion device is provided.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, and FIG. 2 is a horizontal sectional view. 2... Inner cylinder, 3... Flame hole, 5...
... Opening, 8 ... Outer tube, 9 ... Vaporizer tube, 11 ... Blower tube, 16 ... Nozzle,
18...Ignition burner.

Claims (1)

[Scope of utility model registration request] A bottomed inner cylinder with a number of flame holes bored in the side wall and an opening at the center of the bottom, an outer cylinder surrounding the inner cylinder, and an inverted bottomed cylinder standing upright at the bottom of the inner cylinder to cover the opening. a vaporizer cylinder having a shape, a blower tube that is inserted into the above-mentioned opening with a gap and opens into the vaporizer cylinder, a nozzle that sprays liquid fuel from inside the blower cylinder onto the closed surface of the vaporizer cylinder, and A liquid fuel combustion device consisting of an ignition burner with an ignition electrode and a spray nozzle facing eccentrically inside the cylinder.