JPH0129425Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention accurately starts the ignition of atomized fuel sprayed onto the inner peripheral surface of the combustion cylinder by a rotating fuel cup, and at the same time evaporates the sprayed fuel. The present invention relates to an ignition promoting device for a rotary burner that can promote complete combustion of fuel.

Conventional technology Conventionally, atomized fuel is sprayed toward the inner circumferential surface of the combustion cylinder by the centrifugal force of the rotation of the fuel cup and the blowing action of forced air, and the atomized fuel flows inside the combustion cylinder from the base end toward the distal end. A rotary burner that prevents the blown fuel from being blown away from the ignition plug setting position by the forced air jet action, and allows the blown fuel to stay at the ignition plug setting position for a long time to quickly and accurately start the ignition of the fuel. As a typical example of an ignition accelerating device, the one shown in Japanese Patent Publication No. 53-43700 is known, and its configuration is as shown in FIG. A wind shielding wall 3 is installed between the combustion tube 1 and the combustion tube 1 to block a part of the forced air that is blown from the air outlet 2 while swirling along the inner surface of the combustion tube 1 from hitting the combustion tube 1. An ignition accelerator plate 5 is installed on the upper part of the wind shield wall 3 so as to extend horizontally into the combustion cylinder, so that an air passage 4 is formed. The ignition accelerator plate 5 connects the retention area 6 in which turbulence generated by the collision with the ignition accelerator plate 5
It is formed at the upper fuel scattering position, and the retention part 6
The ignition plug 7 is positioned at the .

Problems to be Solved by the Invention By the way, in the conventional ignition promotion position of this type, the fuel sprayed at the ignition plug setting position is retained at the ignition plug setting position, and ignition is reliably started. The other sprayed fuel oil that has been sprayed on the inner surface of the combustion cylinder other than the ignition plug setting position cannot be blown away forward by the blowing action of the forced wind, and it is impossible to keep it at that position. Since unburned fuel is generated in some parts, it is not possible to promote the evaporation and combustion of fuel by heating all the spattered fuel within a short period of time to evaporate and vaporize it.

Means for solving the problem The present invention solves the above problems, and includes:
The configuration will be explained below with reference to FIGS. 1 to 3 corresponding to the embodiment. That is, the air outlet 1 is opened at the base end side of the combustion tube 101 whose front end side is open.
The combustion tube 101 and the ventilation chamber 102 are connected through the combustion tube 101, and a fuel cup 104 is installed in the combustion tube 101.
is arranged so that it can rotate freely. The combustion tube 1 is located at the fuel spraying position where the fuel is sprayed by the fuel cup 104.
01 A short corrugated combustion promoting tube 105 having a cylindrical shape as a whole is disposed on the inner periphery. The above corrugated combustion promoting tube 10
5, there is a vortex retention valley 106 for retaining the spattered fuel in a vortex state, and a forced air flow between the inner circumferential surface of the combustion tube 101 and the outer circumferential surface of the corrugated combustion promoting tube 105. , ventilation peaks 107 that blow air from the base end toward the tip end are alternately provided along the longitudinal direction of the combustion tube 101. The tip side of the ignition plug 108 faces the vortex retention valley 106 .

Function: First, when starting combustion, forced air for combustion is sent from the air chamber 102 to the combustion tube 10 through the air outlet 103.
1 and at the same time, the fuel is sent to the fuel cup 104 which is being rotated at high speed.The fuel becomes fine particles due to the rotational centrifugal force of the fuel cup 104 and the spraying action of forced air. It is sprayed toward the inner circumferential surface of the corrugated combustion promoting tube 105 arranged at the spray position. By the way, inside the corrugated combustion promoting tube 105, there are alternating vortex retention peaks 106 and ventilation peaks 107.
and are provided in the longitudinal direction of the combustion tube 101, so when starting combustion, the combustion tube 1 passes through the air outlet 103.
A part of the forced wind blown into the 01 collides with the large number of vortex retention valleys 106 and generates a vortex phenomenon of the forced wind in this part, so that all of the spattered fuel oil is The particles are retained in the vortex retention valley 106 while being atomized by the vortex of the forced wind. Therefore, when the spark plug 108 is energized to generate a spark, the fuel accumulated in the swirling state is quickly ignited and burned, and at the same time the fuel accumulated in the other swirling flow retention valleys 106 is ignited and burned. The fire spreads one after another, making it possible to instantly and accurately burn all the sprayed fuel oil.
Since the entire 05 is heated by the combustion flame and reaches a high temperature state, thereafter, the fuel sprayed by the fuel cup 104 quickly evaporates and vaporizes due to the heating action of the corrugated combustion promoting cylinder 105 and the blowing action of forced air. The mixture becomes gas mixture and is vaporized and burned in the combustion tube 101. On the other hand, a part of the forced air injected into the combustion tube 101 is transferred to the inner peripheral surface of the combustion tube 101 and the corrugated combustion promoting tube 1.
The carbon flows from the proximal end to the distal end along the ventilation peak 107 formed between the corrugated combustion promoting cylinder 105 and blows off the carbon that has been deposited on the wall surface of the combustion cylinder 101 in front of the corrugated combustion promoting cylinder 105. I can do it.

Example An embodiment of the present invention will be described below.

In FIGS. 1 to 3, reference numeral 101 denotes a combustion tube whose front end is open, and a ventilation chamber 102 is connected to the outside of the proximal end of the combustion tube 101 via a ventilation port 103. Reference numeral 104 denotes an oil supply rotating shaft 109 inserted into the combustion cylinder 101 through the air outlet 103.
A fuel cup 104 is removably attached to the tip side of the fuel cup 104 .
The fuel tank is configured to be supplied with fuel from an oil feed passage 110 provided inside the tank. Reference numeral 105 denotes a short corrugated combustion promoting cylinder having a cylindrical shape as a whole and disposed on the inner periphery of the combustion cylinder 101 at the position where fuel is sprayed by the fuel cup 104.
05, forced air flows between the vortex retention valley 106 where the spattered fuel can be retained in a vortex state, the inner peripheral surface of the combustion tube 101, and the outer peripheral surface of the corrugated combustion promoting tube 105. Ventilation ridges 107 are provided alternately along the longitudinal direction of the combustion tube 101 to blow air from the end side toward the tip side.

Reference numeral 108 denotes an ignition plug attached to the combustion tube 101 so that its tip side faces the vortex retention valley 106 . Reference numeral 111 denotes an air regulation ring disposed on the base end side of the combustion tube 101, and the air regulation ring 1
11 is a blower tube 1 with a blower port 103 opened in the center.
12 is integrally provided so as to project into the combustion cylinder 101.

Reference numeral 113 denotes an electric motor mounted on the outside of the ventilation chamber 102, and the electric motor 113 includes an oil feed rotation shaft 10.
9 are directly connected. Reference numeral 114 denotes a ventilation guide tube formed in the shape of a truncated hollow cone as a whole and disposed within the ventilation port 103;
The large diameter side of the blower tube 112 is sealed in the distal end side of the blower tube 112, and the base end side is attached to the blower chamber 1 between the open outer peripheral surface of the small diameter side and the inner circumferential surface of the blower tube 112.
An annular ventilation passage 115 communicating with 02 is formed.

Reference numeral 116 denotes a large number of blowholes that are opened at the tip end face of the blower tube 112. The blowholes 116 are connected to the ventilation passage 115, and are connected to the ventilation passage 115 from the ventilation chamber 102.
The forced air sent into the combustion tube 10 from the nozzle 116 to the combustion tube 10 in front of the base end of the wavy combustion promoting tube 105
1. Squirt toward the inner surface. Reference numeral 117 denotes a substantially symmetrical partition cup that is integrally attached to the outer rear side of the fuel cup 104, and the inside of the ventilation chamber 102 for sending the combustion air is divided into the partition cup 117 and the partition wall tube 118. 10 ventilation chambers separated by twist
A cooling ventilation chamber 119 for blowing cooling air is formed behind 2. The ventilation chamber 102 is connected to the ventilation port 103 between the fuel cup 104 and the ventilation guide cylinder 114, and supplies forced air for combustion to the ventilation chamber 10.
2 through the ventilation opening 103 and along the ventilation guide tube 114 toward the inner peripheral surface of the combustion tube 101, and the cooling ventilation chamber 119 is communicated with a plurality of ventilation openings 120 opened at the base end surface of the fuel cup 104. The cooling air blown from the cooling ventilation chamber 119 is blown into the fuel cup 104 through the ventilation port 120 to prevent burnout of the fuel cup 104 and to prevent fuel cup 1 from burning out.
04 Prevents tar and carbon from adhering to the inner surface. Reference numeral 121 denotes a diffusion plate attached to the tip of the oil feed rotation shaft 109 so as to be located inside the fuel cup 104, and the fuel is distributed between the rear side of the diffusion plate 121 and the base end surface of the fuel cup 104. The inner surface of 104 is supplied with oil.

122 is a fuel supply pipe connected to the base end side of the oil feed rotation shaft 109, 123 is a combustion air supply pipe whose tip side is connected to the ventilation chamber 102 along the tangential direction, and 124 is a cooling air supply pipe. This is a cooling air supply cylinder whose tip side is connected to the chamber 119 along the tangential direction.

Therefore, in the rotary burner of the above embodiment, the electric motor 113 is started and the fuel cup 10 is turned on.
4 at high speed and supply cylinders 123, 124.
If swirling combustion air and swirling cooling air are sent into the ventilation chamber 102 and the cooling ventilation chamber 115, and fuel is further supplied to the inner surface of the fuel cup 104 from the oil supply rotation shaft 109, the fuel will be absorbed by the rotating centrifugal force of the fuel cup 104. The combustion tube 10 passes from the ventilation chamber 102 through the ventilation opening 103 and along the ventilation guide tube 114.
1 Due to the blowing action of forced air swirling toward the inner circumferential surface, the fuel becomes fine particles and reaches the combustion tube 1 at the fuel spouting position.
01 is sprayed toward the inner surface of the corrugated combustion promoting tube 105 arranged on the inner periphery. However, inside the wavy combustion promoting cylinder 105, there is a vortex retention valley part 106 along the longitudinal direction of the combustion cylinder 101, which generates a vortex state by collision with the swirling forced wind and retains a part of the forced wind. They are placed at intervals all around the circumference, so
The spattered fuel oil is not blown away toward the tip side by the forced wind, but remains in a vortex state, becomes even finer, and is quickly combusted by the ignition of the ignition plug 108. The burning flame is
While circulating on the swirling forced wind, other accumulated fuel is ignited, combusts instantly, and a combustion flame is ejected toward the tip. On the other hand, the forced air blown into the ventilation passage 115 from the ventilation chamber 102 is sent to the combustion tube 1 from the blower port 116...
01 After being injected toward the inner circumferential surface, a vortex retention valley 10 is formed along the longitudinal direction of the combustion tube 101 between the outer circumferential surface of the corrugated combustion promoting tube 105 and the inner circumferential surface of the combustion tube 101.
The combustion flames are blown toward the tip side through the ventilation peaks 107 provided alternately with 6 and 6, and the combustion flames burned in the vortex retention valleys 106 are blown away to the tip side, causing carbon to adhere and accumulate on the inner surface of the combustion tube 101. It replenishes combustion air and promotes complete combustion while preventing combustion from occurring.

Therefore, after the corrugated combustion promoting cylinder 105 is heated to a considerable extent due to the continuation of combustion, the sprayed fuel oil is evaporated and vaporized while the vortex is retained due to the heating effect, and the vaporized gas generated is mixed with the forced wind. , exhibits a vaporization combustion state. Moreover, fuel cup 104
Cooling air is constantly blown into the inside of the fuel cup 104 from the ventilation holes 120 on the base end surface thereof, and this cooling air is swirled together with the fuel by the diffusion plate 121 and is ejected toward the tip side along the inner wall surface of the fuel cup 104. Therefore, burnout of the fuel cup 104 is prevented, and carbon and tar are not deposited on the inner surface of the fuel cup 104.

Effects of the Invention In short, the present invention has the above-mentioned technical means, so that the rotation centrifugal force of the fuel cup 104 and the blowing chamber 102 through the blowing port 103 to the combustion tube 1
The vortex retention valley part 106 provided inside the corrugated combustion promoting cylinder 105 collects all the fuel that has been sprayed in fine particles toward the inner circumferential surface of the combustion cylinder 101 due to the injection action of the forced air blown into the combustion cylinder 101. Although it is possible to quickly and accurately start the ignition by the spark plug 108 by causing the fuel oil to accumulate in a vortex state, it also promotes the spread of fire to other spattered fuel oils that are stagnant in the vortex state. All the fuel can be instantly combusted.

Moreover, the combustion flame is blown away toward the tip side by the forced wind blowing out from the ventilation crest 107 formed between the inner circumferential surface of the combustion tube 101 and the outer circumferential surface of the corrugated combustion promoting tube 105. Combustion promoting cylinder 10
It is possible to prevent carbon from adhering and accumulating on the inner surface of the combustion tube 101 on the tip side from 5, and after the corrugated combustion promoting tube 105 is heated by the combustion flame, the spouted fuel is kept in a vortex state. It evaporates and vaporizes while it is retained, and the generated vaporized gas is stirred and mixed with forced air to vaporize and burn it.

[Brief explanation of the drawing]

The drawing shows an embodiment of the ignition accelerator in a rotary burner according to the present invention,
Fig. 1 is a side view with a part cut away and main parts cut away, Fig. 2 is an enlarged longitudinal sectional front view taken along line A-A in Fig. 1, Fig. 3 is a front view of the air regulation ring, and Fig. 4 is a front view of the air regulation ring.
The figure is a partially cutaway perspective view of a conventional example. DESCRIPTION OF SYMBOLS 101... Combustion tube, 102... Blow chamber, 103... Blow port, 104... Fuel cup, 105... Corrugated combustion promoting tube, 106... Eddy current retention valley part, 107... Ventilation peak part, 108... Ignition plug.

Claims (1)

[Scope of utility model registration request] A rotatable fuel cup is arranged in a combustion cylinder whose base end is connected to a blowing chamber through a ventilation opening, and a wave-shaped combustion promotion is applied to the inner periphery of the combustion cylinder at the location where fuel is sprayed by the fuel cup. A tube is provided inside the corrugated combustion promoting tube, and forced air flows between the vortex retention valley where the spattered fuel is retained in a vortex state, the inner circumferential surface of the combustion tube, and the outer circumferential surface of the corrugated combustion promoting tube. The ventilation ridges, through which the air is blown from the base end toward the tip side, are alternately provided along the longitudinal direction of the combustion cylinder, and the tip side of the ignition plug is made to face the vortex retention valley. Ignition accelerator for rotary burners.