JPS6244163B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustion device that utilizes thermal energy by burning mainly fine combustible materials such as rice husk, sawdust, peanut skin, powder, fine chips, etc. .

When burning fine combustible materials as fuel and using it as a heat source for heating greenhouses, etc. for agriculture and horticulture, the combustion efficiency is high, the amount of ash is small, and furthermore, continuous fuel supply is possible, which is labor-saving. Moreover, an economical combustion device is required.

The present invention provides a combustion device that meets the above requirements, and includes a drum-shaped combustor body with a horizontal axis;
The combustor comprises an automatic fuel feeder that automatically supplies fuel to the combustor body, and an air supply pipe for making the fuel into a circular flow in the circumferential direction within the cylindrical body of the combustor body. The central part of the body in the axial direction is formed into a cylindrical part with a required width, and the left and right side parts following this cylindrical part are formed into tapered trunk parts whose diameters gradually become smaller toward the ends, while openings are provided on both left and right end surfaces. , and a fuel inlet connected to an automatic fuel feeder is provided at a predetermined position in the lower half of the circumferential wall of the cylindrical portion, and a fuel inlet is provided on the circumferential wall of the cylindrical portion from the bottom to the top of the inner side of the circumferential wall of the cylindrical portion opposite to this fuel inlet. A chute-like member having a port in the front plate portion is provided below the fuel inlet port, and the chute-like member is opened inside the chute-like member and the supply pressure is injected in a direction tangential to the cylindrical body portion. A combustor body is provided with a flexible air supply port, and fuel is continuously supplied into the combustor body by air that is forced into the cylindrical body from the air supply port through a chute-like member. This is a combustion device that generates a swirling flow that almost follows the inner circumferential surface of the cylindrical body, and completely burns the fuel during this swirling flow.

Next, an embodiment of the apparatus of the present invention will be described with reference to the drawings, together with an applied apparatus shown in FIG.

As shown in FIG. 1 as an enlarged longitudinal sectional view of the combustor body, which is the main part, and as shown in FIG. 2 as a sectional view taken along the line of FIG. , a conveyor B as an automatic fuel feeding machine that automatically supplies fuel (for example, rice husks) to the combustor body;
The combustor body A includes an air supply pipe C for supplying air to make the fuel into a circular flow in the circumferential direction within the cylindrical portion 1 of the combustor body A.

The combustor body A has tapered body parts 2, 2 whose diameters gradually become smaller toward the ends on both left and right sides following the cylindrical body part 1 formed in the central part in the axial direction. A fuel inlet 4 is provided at a predetermined position in the lower half of the circumferential wall of the cylindrical body 1 to which a conveyor B serving as an automatic fuel feeder is connected. The lower end is located at the lower part of the inner side of the peripheral wall of part 1, and the upper end is located at the upper part, extending from the lower part to the upper part,
Further, arc-shaped guide plates 5, 5 having a large number of through holes are provided on opposite sides of the inner side of the circumferential wall of the cylindrical portion. Further, below the fuel intake port 4, there is provided a chute-shaped member 7 having an air supply port 6 opened inward, which allows the supply air to be freely introduced into the cylindrical portion 1 in a tangential direction.

As shown in FIG. 3, the chute-shaped member 7 has
The upper plate part 7a is tilted to guide the fuel forward, and the side plate parts 7b, 7b and the front plate part 7c
A large number of through holes are provided in the front panel 7c, and the front plate portion 7c is obliquely inclined, and an upper semicircular port 7d is provided in the lower portion corresponding to the air supply port 6.

The conveyor B is a screw conveyor, and a screw 9 is provided at an eccentric position within the tube body 8. By eccentrically rotating the screw 9 within the tube body 8, fuel is transferred into the tube body 8 above the chute-like member 7. It is formed to be sequentially transferred toward the end.

Referring to FIG. 4, a fuel storage tank D communicating with the conveyor B is provided, and an air supply pipe C communicating with the air supply port 6 is connected to the discharge port 10A of the blower 10 via a flexible tube 11.

The blower 10 is rotationally driven by a motor 12, and a pulley 13 is attached to the output shaft 12A of the motor 12.
A belt 15 is stretched over a pulley 14 fixed to the shaft end 9A of the blower 10 and the screw 9, so that the blower 10 and the screw 9 are simultaneously driven to rotate by a common motor 12.

The fuel storage tank D has a hopper 16 at its lower part and is connected to the upper base end of the pipe body 8 of the conveyor B,
As the screw 9 rotates, the fuel inside (for example, rice husks) is sequentially flowed out, and a peephole 17 is provided on the side.

In this embodiment, fuel is supplied to the fuel storage tank D by a scraper trough type conveyor as required.

Note that the fuel storage tank D and the conveyor 18 are provided with roofs 19 and 20, respectively.

In the device of the present invention configured as described above, when the motor 12 is rotated and the screw 9 and the blower 10 are rotationally driven, fuel and air are supplied into the cylindrical portion 1 of the combustor body A.

The air supplied into the combustor body A from the air supply port 6 through the vent 7d of the shoot-like member 7 is
The fuel forms a flow that swirls in the circumferential direction inside and falls from above the upper plate part 7a of the chute-shaped member 7 along the front plate part 7c, and is blown out from the air supply port 6 through the vent 7d. The air is caused to swirl along the inner circumferential surface of the cylindrical body 1.

In this case, the guide plates 5, 5 guide the swirling flow of air and also induce swirling combustion of the fuel swirling inside the cylinder portion 1.

When the motor 12 is started, if a spark (not shown) is introduced into the combustor body A from the opening 3 in advance, the fuel starts to burn violently in the combustor body A shortly after the motor 12 is started.

The one shown in FIG. 4 is an example in which the combustor body A is installed directly inside the greenhouse 21 and used for heating, but the one shown in FIG. The combustor body A is installed in a heating chamber 22, and the space between the metal inner wall 23 forming the heating chamber 22 and the outer wall 24 having a heat insulating structure is used as a hot air chamber 25, and is connected to a plurality of vinyl greenhouses etc. through ducts 26, 26. This is an example of use in air heating equipment that supplies hot air.

The hot air in the hot air chamber 25 is sucked by a fan (not shown) installed at the duct connection point to each greenhouse, so that the outside air flows into the hot air chamber 25 as the air is sucked. , an outside air intake pipe 27 is provided.

As shown in the enlarged cross-sectional view in FIG.
4, the other end is open to a hot air chamber 25, and the middle portion is passed through the heating chamber 22, so that preheated outside air enters the hot air chamber 25.

Note that a large number of fins 28 are attached to a portion of the outside air intake pipe 27 facing into the heating chamber 22.

In addition, a flue 29 is opened in the heating chamber 22, and a large number of fins 30 are also provided on the inner wall 23.

Although the one shown in FIG. 5 is an example of heating air, the hot air chamber 25 may be replaced with a water chamber and may be replaced with a boiler, water heater, or the like.

As is clear from the above description, the device of the present invention creates a swirling flow of the fuel sequentially supplied into the combustor body using air supply, and performs highly efficient combustion during this time, so there is almost no ash, residue, etc. It has many excellent effects, such as being able to produce a large heating effect with a small amount of fuel, helping to save energy, and allowing waste materials to be used as fuel if they are made into fine chips.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional side view showing the main parts of the device of the present invention;
Fig. 2 is a sectional view taken from Fig. 1, Fig. 3 is a perspective view of the chute-like member, Fig. 4 is a side view showing an example of application of the present invention, and Fig. 5 is a view showing another example of application of the present invention. The vertical front view shown in FIG. 6 is an enlarged sectional view of the outside air intake pipe. A...Combustor body, B...Conveyor, C...Air supply pipe, D...Fuel storage tank, 1...Cylindrical body, 2...Tapered body, 3...Opening, 4...Fuel intake port, 5...
Guide plate, 6... air supply port, 7... chute-shaped member,
8... tube body, 9... screw, 10... blower,
12... Motor, 21... Vinyl house, 22
...Fire room, 23...Inner wall, 24...Outer wall, 25
...hot air chamber, 26...duct, 27...outside air intake pipe, 28...fin, 29...flue, 30...fin.

Claims (1)

[Claims] 1. A drum-shaped combustor body with a horizontal axis, an automatic fuel feeder that automatically supplies fuel to the combustor body, and an air supply system that turns fuel into a circular flow in the circumferential direction within the cylindrical body of the combustor body. The combustor body has an axially central portion formed into a cylindrical portion with a required width, and the right and left side portions following this cylindrical portion are formed with a tapered cylinder whose diameter gradually decreases toward the end. A fuel inlet is provided at a predetermined position in the lower half of the circumferential wall of the cylindrical portion, and an automatic fuel feeder is connected to the inner side of the circumferential wall of the cylindrical portion, which faces the fuel inlet. An arc-shaped guide plate is provided along the circumferential wall of the cylindrical body part from the lower part to the upper part, and a shoot-shaped member having an opening in the front plate part is provided below the fuel inlet, and the shoot-shaped member is opened inside the fuel intake port. A combustion device characterized in that a combustor body is provided with an air supply port that allows free supply air in a tangential direction to a cylindrical body.