JPH0531368Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention prevents the fuel supplied into the rotating cup from accidentally flashing back due to the intense radiant heat of the combustion flame during large-volume combustion. The present invention relates to a fueling device for a rotary burner that can prevent part of the fuel from dripping and leaking through a fueling pipe during fuel supply.

[Prior Art] Conventionally, a plurality of ventilation windows 4 are provided on a plate surface on the tip side of a rotating shaft 2 inserted into a combustion cylinder 1 through which combustion air flows.
A cup mounting plate 3 with an open side is attached, and an outer cup 5 with one side open is attached to the inside of the cup mounting plate 3.
are integrally attached with a fuel scattering gap 6 therebetween, and inside the outer cup 5 is a cooling cup 7 with one side open.
is attached via the cup fixing fitting 8, and the tip opening 10 of the fuel supply pipe 9 is exposed inside the cooling cup 7, so that the fuel supplied into the cooling cup 7 via the fuel supply pipe 9 is transferred to the cooling cup 8 and the outer cup 5. A rotary burner is shown in Fig. 4, in which fine particles are sprayed into the combustion tube 2 from the fuel scattering gap 6 by the centrifugal force of This was developed by the applicant earlier.

[Problem to be solved by the invention] By the way, in conventional rotary burners of this type, multiple ventilation windows were opened on the surface of the cup mounting plate, so it was difficult to burn a large amount of fuel in the combustion cylinder. In some cases, even if a heat shield plate is attached to the tip of the cup mounting plate with a gap between them, a part of the combustion flame may enter the outer cup through the ventilation window, or the heat shield plate and the cup mounting plate may be damaged. The temperature inside the outer cup becomes abnormally high due to radiant heat, causing backfire combustion, and as a result, not only the cup mounting plate but also
The oil supply pipe inserted into the cooling cup caused an accident in which the outer cup and cooling cup were burnt out, making it impossible to maintain stable combustion.
The tip was curved downward so that it faced in the opposite direction to the direction of rotation of the cooling cup. As a result, the swirling wind generated by the rotation of the cooling cup collides with the fuel supply pipe, creating a vortex phenomenon on the back side of the fuel supply pipe, which is directed from the tip opening of the fuel supply pipe toward the inner surface of the cooling cup. A part of the fuel that was about to be supplied is blown away to the surrounding area, causing a phenomenon where it drips and leaks along the circumferential surface of the fuel supply pipe, resulting in the problem that a predetermined amount of fuel cannot be supplied to the inner surface of the cooling cup. Ta.

The present invention was devised in view of the problems of the conventional technology, and its purpose is to form the cup mounting disc into a blind plate and to solve the problem of how to burn a large amount of fuel. Even when forced,
Stable combustion is achieved by preventing part of the combustion flame from entering the outer cup or causing the outer cup to become abnormally high in temperature due to the radiant heat of the combustion flame, and by preventing backfire combustion within the outer cup. In order to ensure continuity, the tip of the fuel supply pipe is curved downward in the same direction as the rotation direction of the cooling cup, so that the rotation of the cooling cup directs the swirling wind in the same direction as the fuel supply direction. To provide a fuel supply device for a rotary burner, which allows fuel to flow, reliably eliminates the occurrence of swirling wind vortices on the back side of a fuel supply pipe, and completely eliminates dripping of fuel along the fuel supply pipe. This is what I am trying to do.

[Means for Solving the Problems] In order to achieve the above object, the oil supply device for the rotary burner of the present invention is provided with a blind cup mounting disk attached to the tip side of the rotating shaft inserted into the combustion chamber, A heat shield plate is attached to the outside of the cup mounting disk, and an outer cup with one side open is attached integrally to the inner side with a fuel scattering gap, and one side is open inside the outer cup. Attach the cooling cup via the cup fixing fitting, and curve the tip end of the oil supply pipe inserted into the cooling cup downward in the same direction as the rotational direction of the cooling cup, so that the opening at the tip faces the inner surface of the cooling cup. This is what was given.

[Operation] When starting combustion, the rotating shaft is rotated and at the same time, combustion air is injected into the combustion cylinder in a swirling manner.
Then, the rotating cup directly connected to the rotating shaft will be rotated at high speed. When fuel is supplied to the rotating cup that is rotating under such conditions, the fuel is transferred along the inner peripheral surface of the cooling cup toward one open side, and is then diffused in a thin film form and then transferred to the outside. The air is transferred to the inner circumferential surface of the cup, and then diffused into a thin film while being transferred along the inner circumferential surface of the outer cup, and finally becomes finer particles than the fuel scattering interval, and swirling combustion air circulates. It is sprayed towards the inner peripheral surface of the combustion cylinder. As a result, the sprayed fuel is quickly ignited while being swirled while diffusing and mixing with the swirling combustion air, and the raw combustion flame is ejected forward and the entire rotating cup is ignited by the combustion flame. Heat.

By the way, since the cup mounting disk for attaching the outer cup and the cooling cup is formed in a blind shape, it may be attached to the front of the outer cup to prevent some of the raw combustion flames from entering the outer cup. The radiant heat of the raw combustion flame is shielded by the heat shield plate, and the heat dissipation effect of the material of the cooling cup prevents the inside of the outer cup from becoming abnormally high temperature no matter how large a volume of combustion is continued for a long time. This results in no flashback combustion occurring within the outer cup. Moreover, the fuel is supplied to the inner circumferential surface of the cooling cup by a fuel supply pipe whose tip side is curved downward in the same direction as the rotational direction of the cooling cup, and whose tip opening faces the inner surface of the cooling cup. Therefore, the direction of fuel supply and the swirling wind generated by the rotation of the cooling cup are in the same direction, and there is no vortex phenomenon that occurs on the back side of the fuel supply pipe as in conventional rotary burners. Not only can fuel be accurately supplied from the tip opening without scattering to the surroundings and stable combustion can be maintained, but it can also completely eliminate part of the fuel from dripping and leaking through the supply pipe. can.

[Example] Examples will be described with reference to the drawings.

1 and 2, 101 is a rotary burner main body, and the rotary burner main body 101 has a motor chamber 102, a rotating blowing chamber 103, and a combustion tube 104 from the base end to the distal end.
A variable motor 105 is disposed at a substantially central position within the motor chamber 102. and,
A rotating fan 108 directly connected to a rotating shaft 107 of a variable motor 105 is disposed in a rotating blowing chamber 103 connected to a motor chamber 102 via a communication passage 106, and a rotating shaft extending into a combustion cylinder 104. 1
A rotary cup 109 is directly connected to the distal end side of 07.

A ventilation port 111 is opened at approximately the center of a partition wall 110 that partitions the swirling ventilation chamber 103 and the combustion chamber 104, and a plurality of vents are provided on the inner circumferential surface of the partition wall 110 facing the swirling ventilation chamber 103. The fixed blades 112 are arranged radially to face the rotating fan 108, and the strong swirling wind generated by the rotating fan 108 is blown into the combustion chamber 104 through the air outlet 111. The aforementioned rotary cup 109 is connected to the combustion tube 1.
A cup fixing metal fitting 113 attached to the tip side of the rotating shaft 107 extending approximately at the center of the cup fixing fitting 113, a heat shield plate 114 attached at a distance to the tip side of the cup fixing fitting 113, and a blind cup attachment. Disk 115
The outer cup 11 is integrally attached to the inner surface of the cup mounting disc 115 with one side facing the air outlet 111 open, and the proximal end thereof with a fuel scattering gap 117 therebetween.
6, one side facing the air outlet 111 side is open, and the base end side is a cup mounting disk 115 and a cup fixing metal fitting 1.
13 and a cooling cup 118 closely sandwiched between the cooling cups 13 and 118, and the cooling cups 118 are made of a material having particularly high thermal conductivity, such as aluminum.

An air filter 119 is disposed around the motor chamber 102 to clean the outside air taken into the motor chamber 102, and a porous reinforcing plate 121 is provided around the outer periphery of the air filter 119. There is.

Reference numeral 120 denotes an oil supply pipe, and the distal end side of the oil supply pipe 120 is curved downward so as to wrap around the rotating shaft 107 in the same direction as the rotational direction of the cooling cup 118, and the distal end opening 122 of the oil supply pipe 120 is aligned with the horizontal line A. - It faces the inner surface of the cooling cup 118 at a position near A.

[Effects of the invention] Since the present invention is configured as described above, it produces the following effects.

The outer cup and cooling cup are designed to prevent part of the generated combustion flame from entering the outer cup or from heating the cup mounting disc and the outer cup to abnormally high temperatures due to the radiant heat of the combustion flame. In addition to preventing burnout of other parts and maintaining good combustion over a long period of time, the tip of the fuel supply pipe is curved downward in the same direction as the rotation direction of the cooling cup, and the opening at the tip is curved downward. Since the fuel is placed facing the inner surface of the cooling cup, the fuel supplied from the tip opening can be accurately supplied to the inner peripheral surface of the cooling cup without being scattered around by riding the swirling wind that swirls in the same direction as the dripping direction. As the vortex phenomenon does not occur on the back side of the fuel supply pipe, it prevents some of the fuel from dripping and leaking through the fuel supply pipe, allowing combustion to continue under safe conditions. You can force it.

[Brief explanation of the drawing]

Fig. 1 is a vertical side view of the rotary burner with a part cut away, Fig. 2 is an enlarged longitudinal side view of the rotary cup with a part cut away, and Fig. 3 is a rear view of the rotary cup.
FIG. 4 is a partially cutaway vertical side view of a rotary cup in a conventional rotary burner. 101... Burner body, 104... Combustion cylinder, 1
07... Rotating shaft, 109... Rotating cup, 114
... Heat shield plate, 115 ... Cup mounting disc, 116
... Outer cup, 117 ... Combustion scattering gap, 11
8...Cooling cup, 120...Oil supply pipe, 122...
...Tip opening.

Claims (1)

[Scope of utility model registration request] A blind cup mounting disk is attached to the tip side of the rotating shaft inserted into the combustion chamber, a heat shield plate is attached to the outside of the cup mounting disk, and an outer cup with one side open is attached to the inside. A cooling cup with one side open is attached to the inside of the outer cup via a cup fixing fitting, and the distal end side of the fuel supply pipe inserted into the cooling cup is attached to the outside cup integrally with a fuel scattering gap. An oil supply device for a rotary burner that is curved downward in the same direction as the rotational direction of the cooling cup so that its tip opening faces the inner surface of the cooling cup.