JPH0259364B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustion device, and more particularly, to a combustion device.
A combustion device in which a plurality of air supply pipes are arranged around a cylindrical furnace, and the air supply pipes are sequentially energized to burn the combustible materials stacked and ignited in the furnace in a predetermined order. Regarding.

2. Description of the Related Art Various devices have been developed and are on the market that charge combustible materials into a furnace, burn them efficiently, and use the heat generated thereby to produce hot water or hot air. In particular, industrial waste is often used as fuel by keeping in mind the effective use of energy.

By the way, when trying to combust this type of combustible material, there are various problems when introducing it into the furnace. That is, apart from fuels made of fluids such as waste oil, combustible materials made of industrial waste are generally solid, and when they are loaded, they are usually input-dependent, so large amounts of combustible material are released at once. material is introduced into the furnace. Therefore, after ignition, it becomes difficult to control the combustion state, and an excessive amount of heat is generated, overheating the furnace, resulting in concerns about fire or damage to the furnace itself. In particular, when the furnace adopts a boiler structure, combustion that causes large unevenness in the amount of heat generated is not very desirable.

Therefore, as a result of research, the inventor of the present invention found that in a boiler structure in which a liquid tank is enclosed in a furnace, air supply pipes divided into three or four groups are arranged around the outer circumference or inner circumference of this liquid tank. If a sufficient amount of combustible material, preferably in the form of chips, is loaded into the furnace and the air supply pipes are sequentially energized from above under time control after ignition, the combustible material in the form of chips is sequentially ignited from above. It has been found that a combustion device that does not burn more than necessary at once can be obtained, and that the above-mentioned problems can be solved.

Therefore, an object of the present invention is to control the ignition and combustion state of the combustible material loaded in the furnace by controlling the energization order of the air supply pipes, so that a constant amount of heat can always be obtained. To provide combustion equipment with

In order to achieve the above object, the present invention includes a closed casing, a furnace disposed inside the casing, an air supply unit located outside the casing for supplying air into the furnace; a blower for supplying air to the air supply unit, a space for storing and heating fluid is provided between the casing and the furnace, and when the air supply unit supplies air from the blower, A plurality of units are arranged along the height direction of the casing so as to sequentially supply air from an upper air supply unit in accordance with the combustion of the combustible materials stacked and ignited in the furnace.

Next, preferred embodiments of the combustion apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, the reference numeral 10 designates a combustion device according to the invention, in particular, this device preferably produces hot water by burning combustible chips in a furnace as described below. used to obtain. The combustion device 10 includes a sealed casing 14 placed on an elliptical base 12, a cylindrical furnace 16 placed inside the casing 14, and a cyclone for removing dust generated by combustion of combustible materials. It basically consists of a device 18.

As can be understood from FIGS. 5 to 8, a space 19 is provided between the sealed casing 14, the furnace 16, and the cyclone device 18 so as to be spaced apart from each other, and water to be heated is supplied to this space through the inlet 20. will be fulfilled through. A drain pipe 22 is disposed in the closed casing 14 adjacent to the inlet 20 . A pair of hot water outlets 24, 24 are provided at the top of the sealed casing 14. The outlet ports 24, 24 are arranged at opposite positions in the closed casing 14.

Generally, the casing 14 may be made of any material that can prevent leakage of stored water, but is preferably made of relatively inexpensive iron or stainless steel. It is also possible for the inner or outer walls of the casing 14 to be provided with a heat insulating material for lining or coating.

The furnace 16 and the cyclone device 18 are in communication with each other by a passage 26 disposed above them. In particular, the passageway 26 is connected to the cyclone device 18
The device 18 is configured to face the device 18 from a tangential direction with respect to the device 18 (see FIG. 6).

A pipe 28 is provided at the center of the top of the furnace 16, and the air supply pipe 3 is passed through the pipe 28.
0 is facing the inside of the furnace. Further, a separate pipe 32 is provided at the top of the furnace 16, slightly eccentric from the pipe 28. The pipe 32 is used in an emergency to adjust the pressure inside the furnace, and therefore, under normal conditions, it is closed by a valve device (not shown) or the like.

Inside the furnace 16, a plurality of protrusions 34 are disposed slightly below the passage 26 along the inner peripheral wall of the furnace 16. A pair of semicircular plates 36, 36 are placed on these protrusions 34. In particular, these plates 36, 36 are configured so that a circular hole 38 is defined directly below the pipe 28. Therefore, the furnace 16 is divided into a first combustion chamber 40 and a second combustion chamber 42 by the pair of plates 36, 36.

Outside the combustion device 10, for the furnace 16,
Ignition port 44, combustion material inlet 46, and ash removal port 4
8 is provided. These ignition ports 44 and input ports 4
6. The outlet 48 has lid members 50, 52, 54, respectively.
They are opened and closed by the respective ones, and are each communicated with the furnace 16 through predetermined passages.

A blower plate 56 is arranged at the inner bottom of the furnace 16 . The blower plate 56 is formed in a semi-elliptical and hollow shape. A plurality of small holes 58 are provided concentrically on the upper surface of the blower plate 56. One end of a pipe 60 is connected to the blower plate 56, and the other end is connected to a blower as described later.
Therefore, it will be understood that when the blower is energized, combustion-assisting air is forcibly supplied into the furnace through the small holes 58.

A chimney 62 is installed at the center of the top of the cyclone device 18.
is installed protrudingly. That is, the chimney 62 has a relatively large diameter, and one end thereof is connected to the cyclone device 18.
The other end is configured to penetrate through the hot water tank 64 and be located above the outside of the device. A cylindrical hot water tank 64 located directly above the cyclone device 18 is provided with an exhaust pipe 66 at its top. The exhaust pipe 66 serves to discharge steam generated from the heated hot water inside the casing 14 to the outside in an emergency. A dust removal port 68 is provided at the bottom of the outside of the cyclone device 18.
is provided. Only the dust collected by the cyclone device 18 out of the combustible materials burned in the furnace is taken out through the scraping port 68. Note that reference numeral 70 indicates a lid member for opening and closing the scraping port 68.

Next, a blower 72 is disposed at the top of the casing 14. The air blower 72 may be a commercially available one, and its discharge port is similarly connected to the casing 1.
4 is connected to an air chamber 74 located at the top. The air chamber 74 is used to receive air supplied from the blower 72, accumulate it, and release it under a constant pressure. That is, the air chamber 74 has two air outlet ports 76 and 78, and one of the air outlet ports 76 is connected to the air supply pipe 30 via a flexible member 80. A large number of small holes are bored in the air supply pipe 30, and in particular, small holes 82 are drilled radially in the part facing the first combustion device 40, while in the part facing the second combustion chamber 42, small holes 82 are drilled radially. In particular, a small hole 84 is drilled therein which is oriented only in the direction of the cyclone device 18 . The other air outlet 78 is connected to the blower plate 56 via a pipe 86.

Note that the amount of air supplied into the furnace 16 from the air supply pipe 30 and the blower plate 56 is controlled by the valves 88 and 56, respectively.
It is controlled by opening and closing 90.

Furthermore, three grouped air supply units 92 are provided on the side wall of the casing 14 on the furnace 16 side.
94 and 96 are arranged. Air supply unit 9
2, 94, and 96 are configured to be curved in a semicircle as can be easily understood from FIGS. 94 extends from the vicinity between the input port 46 and the discharge port 48, and the third unit extends from the vicinity of the discharge port 48 along the curved side wall of the casing 14 and terminates at the back of the starting point. . The interior of each unit 92, 94, 96 is divided into three passages 98, 100, 102 by a partition wall, as shown in FIG. A plurality of nozzle portions 104 communicating with the inside of the furnace 16 are provided.

In addition, each unit 92, 94, 96 has
Blower 106, 108 and 110 are connected.
In this case, it is preferable that valve members 118, 120, and 122, such as electromagnetic valves, be interposed in the pipes 112, 114, and 116 that connect the air supply unit and the blower. In addition, when extremely large blowers are selected, they may be combined into one blower, and furthermore, the blower 72 can also be used.

Furthermore, an indicator tank 126 having a float member 124 disposed therein is provided between the hot water tank 64 and the air chamber 72. Instruction tank 126
communicates with a space 19 inside the sealed casing 14 via a pipe 128, and therefore the float member 124 moves up and down depending on the amount of water introduced into the space 19. . Therefore, for example, if the float member 124 is electrically connected to a valve 130 attached to the water supply pipe 20 and the valve 130 is opened in response to a signal for decreasing the water in the space 19, , constant casing 14
The water level inside will be maintained at a constant level.

In addition, in the figure, reference numeral 132 is a member for suspending the air supply pipe 30 and adjusting its height within the furnace 16.

Further, FIGS. 11 to 14 show another embodiment of the present invention, and the same reference numerals as in the embodiment are designated by
shall indicate the same component.

Therefore, in this embodiment, the air supply unit 1
40 , 142 and 144 are arranged in the space 19 between the furnace 16 and the casing 14 . As is clear from FIG. 13, the air supply unit 140 includes a pair of semicircularly curved pipe members 146,
148, 150, 152, and a plurality of nozzle members 154 fixed to these pipe members at predetermined intervals. Nozzle member 1
54 has a large diameter at one end and is liquid-tightly connected to the pipe member 146, and the other end has a small diameter and is connected to the furnace 16.
Penetrate the wall of the furnace and look into the inside of the furnace. Nozzle member 15
The diameter of the hole 156 formed inside the hole 156 becomes extremely small just before reaching the furnace 16, and serves as a so-called nozzle. Note that the pipe member 14
8, 150, 152 are also nozzle members 15.
4 shall be provided in large numbers.

Air supply unit 14 configured as above
The semicircular pipe members 0, 142, and 144 are led out to the outer wall at the back of the furnace 16, and the four pipe members are integrally connected to the blowers 106, 108, and 110, respectively.

Next, the operation of the combustion apparatus configured as described above will be explained.

First, before operating the combustion device 10, a predetermined amount of water is introduced into the space 19 surrounding the furnace 16 and the cyclone device 18 through the inlet 20. Then,
A combustible material, for example, a tire cut into chips, enters the first combustion chamber 4 through the combustible material inlet 46.
0 is loaded inside. At that time, this combustible material
It is preferable to load the fuel up to the vicinity of the plate 36 that separates the first combustion chamber 40 and the second combustion chamber 42. This combustible material is ignited from the ignition port using a normal ignition method. By energizing the blower 72 to the ignited combustible material above, air is forcibly supplied. The introduced air is discharged into the furnace 16 from the air supply pipe 30 and the blower plate 56, but if necessary, the air may be supplied only from the supply pipe 30 by tightening the valve 90. Furthermore, due to the nature of the laminated chip-like combustible materials, it is difficult to expect air to penetrate. Therefore, in the device of the present invention, the blower 10
6 is energized. That is, when the solenoid valve 118 is opened in accordance with the energization of the blower 106, the supplied air reaches the air supply unit 92 and flows through the three passages 98, 1, which constitute this air supply unit 92.
00, 102, and the nozzle part 104
After that, it is ejected into the furnace 16 in a compressed state. As a result, the chip-shaped combustible material can be combusted without any inhibiting factors due to the assistance of air from the air supply unit 92. As is clear from FIG. 10, the air supply unit 92 has a semicircular shape like the other air supply units 94 and 96, so that the stacked chips are evenly supplied with fresh air. Supply can be secured. In this case, if the combustion completion time of the combustible material is obtained as information in relation to the amount of air supplied, the material, and the amount of the combustible material, it is possible to automatically The blower 106 can then be deactivated.

By the way, at this point, the ignited portion of the stacked chips has moved further downward. Therefore, even if the blower 106 continues to be energized, it cannot be expected that the air supply will be particularly effective. Therefore, in the device of the present invention, the blower 108 is energized in response to the de-energization of the blower 106. As a result, blower 1
The air supplied from the furnace 16 passes through the solenoid valve 120, reaches the air supply unit 96, and passes through a nozzle section through a passage having the same structure as the passages 98, 100, and 102 that make up this air supply unit.
It reaches inside and performs the same action as above.

It will be appreciated that if blower 108 is de-energized in the same way as blower 106, blower 110 is then turned on and performs a similar function.

As a result of the above operations, all of the combustible materials stacked in the furnace 16 can be burned. By the way, dust and the like generated after combustion in the furnace 16 reach the second combustion chamber 42 through the circular hole 18. Since the second combustion chamber is sufficiently heated by the rising high-calorie hot air, secondary combustion occurs there, complete combustion occurs, and the air passes through the passage 26 and reaches the cyclone device 18 . The cyclone device 18 circulates around its peripheral wall to prevent dust, while the hot air rises as it is and is discharged into the atmosphere from the chimney 62.

During this operation, the water remaining in the space 19 around the furnace wall and the cyclone device 18 is gradually heated and converted into hot water. Therefore, when desired, it can be taken out from the outlet 24 and used for many purposes.

In the embodiment shown in FIGS. 11 to 14, the air supplied from the blowers 106, 108, 110 is supplied to the pipe members 146, 148, which constitute the air supply units 140, 142, and 144.
150 and 152 to each nozzle member 154, and is vigorously ejected into the interior of the furnace 16 from its small diameter outlet. In this embodiment, since the air supply unit is not exposed to the outside of the casing 14, it has the advantage of being easy to manufacture and having an excellent aesthetic appearance. In particular, cylindrical nozzles are arranged in multiple stages, so
This has the effect of making it easier to control combustion from the top to the bottom.

According to the present invention, as described above, even chip-like or particulate combustible materials stacked in a furnace can be combusted by forcibly supplying air from the top, bottom, and sides. In particular, by sequentially energizing the blower downward over time, it is possible to achieve the effect of even combustion. In addition, on the one hand, the control of the blower can control the combustion of combustible materials over time;
This has the advantage of avoiding combustion phenomena that temporarily involve the release of an excessive amount of heat.

Although the present invention has been described above with reference to a preferred embodiment, the present invention is not limited to this embodiment. For example, the present invention is not limited to this embodiment. It goes without saying that various modifications can be made without departing from the spirit of the present invention, such as making it possible to forcibly blow air into the furnace from the same blower by controlling the opening and closing of a solenoid valve.

[Brief explanation of drawings]

FIG. 1 is a front view of a combustion device according to the present invention;
FIG. 2 is a side view of the combustion device according to the present invention, FIG. 3 is a plan view of the combustion device according to the present invention, and FIG.
The figure shows the combustion device according to the present invention in Fig. 1-
5 is a cross-sectional view taken along the line in FIG. 1 of the combustion device according to the present invention, and FIG. 6 is a cross-sectional view taken along the line taken in FIG.
The figure shows the combustion device according to the present invention in Fig. 1-
A line sectional view, and FIG. 8 is a partially cutaway front view of an air supply pipe incorporated in the combustion device according to the present invention.
9 is a plan view of the blower plate 56 incorporated in the combustion apparatus of the present invention, FIG. 10 is a cross-sectional view of the air supply unit of the combustion apparatus according to the present invention, and FIG.
The figure is a front vertical cross-sectional view of another embodiment of the present invention, FIG. 12 is a side vertical cross-sectional view of another embodiment of the present invention, and FIG. 13 is a cross-sectional view of another embodiment of the present invention. , FIG. 14 is an enlarged cross-sectional view of a pipe and a nozzle constituting an air supply unit in another embodiment of the present invention. 10... Combustion device, 12... Base, 14... Casing, 16... Furnace, 18... Cyclone device, 19... Space, 20... Inlet, 22... Drain pipe, 24... Outlet, 26...Aisle,
28...Pipe, 30...Air supply pipe, 32
... Pipe, 34 ... Protrusion, 36 ... Plate, 3
8... circular hole, 40... first combustion chamber, 42... second
Combustion chamber, 44... Ignition port, 46... Inlet port, 48
... Ash outlet, 50, 52, 54 ... Lid member, 5
6...Blower plate, 58...Small hole, 60...Pipe,
62... Chimney, 64... Hot water tank, 66... Exhaust pipe, 68... Scraping port, 70... Lid member, 7
2...Blower, 74...Air chamber, 76, 78...
Air outlet, 80... Flexible member, 82... Small hole, 84... Small hole, 86... Pipe, 88, 90
...Valve, 92,94,96...Air supply unit, 98,100,102...Passway, 104...
... Nozzle part, 106, 108, 110 ... Blower, 112, 114, 116 ... Pipe, 11
8, 120, 122... Valve member, 124... Float member, 126... Indication tank, 128... Pipe, 130... Valve, 132... Adjustment member, 14
0,142,144...Air supply unit, 14
6,148,150,152...pipe member, 1
54...Nozzle.

Claims (1)

[Scope of Claims] 1. A sealed casing, a furnace disposed inside the casing, an air supply unit located outside the casing for supplying air into the furnace, and an air supply unit provided to the air supply unit. a blower for supplying air, a space for storing and heating fluid is provided between the casing and the furnace, and the air supply unit performs stack ignition in the furnace when supplying air from the blower. A combustion device characterized in that a plurality of combustion devices are arranged along the height direction of the casing so as to sequentially supply air from an upper air supply unit according to the combustion of the combustible material. 2. The combustion device according to claim 1, further comprising a cyclone device disposed inside the casing, and the cyclone device and the furnace connected through a passage. 3. In the combustion device according to claim 1, the casing is formed of an elongated cylindrical body,
The air supply unit is a combustion device that is fixed to a semicircular portion of the cylindrical body. 4. The combustion apparatus according to claim 3, wherein the air supply unit includes a plurality of air supply passages and a nozzle portion that communicates the passages with the inside of the furnace. 5. The combustion device according to claim 3, wherein the air supply unit is fixed to the outer circumference of at least three cylinder bodies. 6. The combustion apparatus according to claim 1, wherein the air supply unit is disposed in a space defined between the casing and the furnace. 7. The combustion apparatus according to claim 6, wherein the air supply unit includes a cylindrical pipe and a nozzle extending from the pipe and facing into the furnace. 8. The combustion apparatus according to claim 7, wherein four pipes are arranged in the vertical direction to form an air supply unit.