JP3314002B2 - Waste treatment equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refuse disposal apparatus for incinerating and reducing refuse discharged from homes and the like.

[0002]

2. Description of the Related Art Garbage discharged from households is mainly collected by local governments and is disposed of by collectively incinerating them in large incinerators owned by local governments or by using them for landfills. General. However,
Since the garbage collection day is limited to several times a week, it is necessary to pack the garbage and store it in the home for a long time until the next collection day. It is hard to secure. Also, the amount of garbage collected on the collection day is enormous, and the collection work is labor-intensive and difficult.

On the other hand, for example, Japanese Utility Model Laid-Open No. 6-227
A small amount of refuse incinerators, such as those disclosed in Japanese Patent Publication No. 13 and Japanese Patent Application Laid-Open No. 62-119317, are incinerated and reduced at each household level.

[0004]

However, in the above-mentioned conventional waste incinerator, the incinerator becomes hot due to the burning of the waste, so that the installation place is restricted, and furthermore, a large amount of combustion gas is discharged in a short time. It is necessary to give due consideration to the adverse effects of, and there is a problem that it is difficult to use in general households.

[0005] communicating to such problems, the applicant has the Hei 8-1159 No. 17 above, the tapered surface on the lower end of the cylindrical inner surface which is constant along the cross-sectional area in the axial direction A combustion chamber is formed in the incinerator body so as to be narrowed downward, and the weight is pressed against the tapered surface by a weight and compressed, and the dust is gradually reduced near the tapered surface. A refuse treatment apparatus has been proposed in which combustion air that is sufficient for combustion is supplied by an air supply nozzle. According to this refuse treatment device, the burning rate of refuse in the combustion chamber is slowed down, the amount of heat generated per unit time is suppressed as much as possible, and the restrictions on the installation location are minimized. , The weight can be reduced.

However, in such a waste disposal apparatus,
Water vapor and unburned gas generated from unburned refuse by combustion heat generated in the combustion chamber rise by convection and are cooled by coming into contact with the cylindrical inner surface to become tar-like liquid and wet the cylindrical inner surface. Therefore, unrolled paper may stick to the wet inner surface of the cylinder and the weight may not fall down smoothly, preventing the weight from being pressed against the tapered surface by the weight. Combustion may be difficult.

[0007] The present invention has been made in view of the above-mentioned circumstances, and is intended to reduce the amount of heat generated per unit time as much as possible by slowing down the burning rate of refuse and to minimize the restrictions on the installation location. It is an object of the present invention to provide a refuse treatment apparatus which enables a stable combustion by constantly lowering the weight and enables incineration and weight reduction of refuse in each household easily without any problem.

[0008]

According to a first aspect of the present invention, there is provided a waste treatment apparatus according to the first aspect, wherein a cross-sectional area is substantially constant along an axial direction. A combustion chamber having a combustion chamber formed to have a shape that narrows downward by connecting the combustion chambers, and configured to be capable of introducing dust from above the combustion chamber and preventing air from being supplied to the combustion chamber from above. A furnace body, a weight that is capable of pressing debris in the combustion chamber toward the tapered surface and is vertically movably accommodated in the combustion chamber, and that the debris in the combustion chamber is loosened near the tapered surface. An air supply nozzle provided in the incinerator main body to supply combustion air to be burned into the incinerator; a plurality of projections protruding integrally with and proximate to the outer peripheral surface of the weight are integrally provided on the inner cylindrical surface ; That
The plurality of protrusions extend in the axial direction of the cylindrical inner surface and
In the circumferential direction of the Jo inner surface is disposed at a position spaced characterized Rukoto.

According to such a configuration, the dust pressed against the tapered surface by the weight is gently burned in the vicinity of the tapered surface by the supply of combustion air from the air supply nozzle. The amount of heat generated and the amount of combustion gas generated are relatively small, the restrictions on the installation location when used in households are eliminated, and when garbage is generated in each household, the garbage is incinerated so that it is frequently discarded each time. It is possible to reduce the weight. In addition, even if the inner cylindrical surface is wet with a tar-like liquid, it is possible to prevent papers from sticking to the inner cylindrical surface as much as possible due to the plurality of protrusions projecting from the inner cylindrical surface, and the weight is reduced. And the stable combustion can be continued. In addition,
The protrusion extends in the axial direction of the cylindrical inner surface and extends
They are arranged at positions spaced apart in the circumferential direction.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, another combustion chamber connected to the combustion chamber via an outlet formed at a lower end of the tapered surface is provided. , Formed in the incinerator main body, and provided in the incinerator main body to supply combustion air for burning unburned gas to the other combustion chamber, the air supply nozzle being different from the air supply nozzle. The unburned gas generated by the gradual combustion near the tapered surface is completely burned in the lower combustion chamber, so that the exhaust gas can be purified as much as possible. It is Ru can.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the embodiments of the present invention will be described with reference to reference examples and real施例of the present invention shown in the accompanying drawings.

FIGS. 1 to 5 show a reference example. FIG. 1 is a view showing the entire configuration of a waste treatment apparatus including a waste incinerator, FIG. 2 is a longitudinal sectional view of the waste incinerator, and FIG. 2 of 3
FIG. 4 is a diagram showing a control circuit of the electric heater and the fan motor, and FIG. 5 is an operation timing chart of the electric heater and the fan.

First, referring to FIG.
A refuse incinerator 5, a first volume reduction processing tank 6, a second volume reduction processing tank 7, and a garbage processing tank 8 are provided. Thus, while the refuse incinerator 5 incinerates combustible refuse 9, the first volume reduction treatment tank 6 is for reducing the volume of PET bottles 10 and the like. The second volume reduction treatment tank 7 is for reducing the volume of the styrofoam product 11 and the like, and the garbage disposal tank 8 is for performing an organic treatment on the garbage 12 such as fermentation reduction.

[0014] The first and second volume reduction treatment tank 6 is fixedly disposed in the heating chamber 13 ₁ so as to plunge their lower into the first heating chamber 13 _1, The upper end openings of both volume reduction processing tanks 6 and 7 are closed by lid members 14 and 15 that can be opened and closed, respectively.
Weights 16 and 17 for compressing and reducing the volume of the PET bottle 10 and the Styrofoam product 11 and the like are accommodated in a vertically movable manner.

The gas generated in the two volume reduction tanks 6 and 7 is mixed with combustion air and guided to the refuse incinerator 5, and is supplied to the air suction pipe 18 through the two volume reduction tanks 6 and 7. Are connected to each other.

[0016] a position adjacent to the first heating tank 13 ₁ second
A heating tank 13 ₂ is provided, and both heating tanks 13 ₁ , 13 ₁
The _second lower communicate with each other, garbage treatment tank 8 is fixedly disposed to the lower portion thereof to the second heating tank 13 ₂ so as to rush into the second heating tank 13 _2. The top opening of the garbage treatment tank 8 is closed by the openable cover 19, the top of the garbage treatment tank 8, a second heating tank 13 and the combustion gas or the like from inside ₂ in biological waste treatment tank 8 And an exhaust port 21 for discharging the combustion gas introduced into the garbage disposal tank 8 to the outside.

Referring also to FIG. 2, the incinerator body 22 of the refuse incinerator 5 has a box base 23 formed in a rectangular box shape.
And a rising pipe portion 24 which is formed in a tapered shape having a smaller diameter toward the upper side and rises from a substantially central portion of the box-shaped base portion 23, and a lower end is continuously provided on an outer surface of an intermediate portion of the rising pipe portion 24 in the vertical direction. A small-diameter cylindrical portion 25 extending upwardly, and an outer tapered portion 26 formed in a tapered shape having a larger diameter as going upward and having a lower end connected to an upper end of the small-diameter cylindrical portion 25.
A large-diameter cylindrical portion 27 having a lower end connected to the upper end of the outer tapered portion 26 and extending upward, and a tapered shape having a larger diameter as going upward, and an inner side of the outer tapered portion 26. And a lower end of the inner taper portion 28 is fixed to the upper end of the riser tube portion 24 so that the lower end of the inner taper portion 28 slightly projects into the upper end portion of the riser tube portion 24. Also the inner tapered part 2
The upper end of 8 is fixed to the inner surface of the large-diameter cylindrical portion 27.

The incinerator main body 22 is fixedly supported by a gantry 29 arranged on the floor. The upper end opening of the large-diameter cylindrical portion 27 is opened so as to function as a dust inlet 30 into the incinerator main body 22. The dust inlet 30 is closed by a lid member 31 that can be opened and closed. It is possible.

In the incinerator main body 22, a combustion chamber 32 for incinerating the refuse 9 introduced from the refuse input port 30 is formed. , A second combustion chamber 34 connected to the lower end of the first combustion chamber 33
Consisting of

The first combustion chamber 33 is formed by a cylindrical inner surface 27a formed by the inner surface of the large-diameter cylindrical portion 27 and a cylindrical surface formed by the inner surface of the inner tapered portion 28 with the cross-sectional area being substantially constant along the axial direction. The tapered surface 28a is connected to the lower end of the inner surface 27a, and is formed in a shape narrowing downward. The outlet 35 is formed at the lower end of the tapered surface 28a, that is, at the small diameter end. Moreover, a plurality of protrusions 55 distributed in the circumferential direction and the axial direction of the cylindrical inner side surface 27a are protruded from the cylindrical inner side surface 27a by, for example, press forming the large-diameter cylindrical portion 27 formed of SP material. . By closing the dust inlet 30 with the lid member 31, the supply of air from above to the first combustion chamber 33 is prevented.

The second combustion chamber 34 below the first combustion chamber 33
Is formed in the riser tube portion 24 and the box-shaped base portion 23, and is provided at the lower end of the first combustion chamber 33, that is, at the outlet 35.
Is formed in the incinerator main body 22 so that the flow area is larger than the opening area of the outlet 35 below the outlet 35.

Referring also to FIG. 3, the small-diameter cylindrical portion 25,
An annular chamber 36 is formed between the lower portion of the outer tapered portion 26 and the large-diameter cylindrical portion 27 and the upper portion of the riser tube portion 24 and the inner tapered portion 28. 28 and the first air chamber 36 ₁ by an annular partition wall 56 provided over between the lower portion of the upper outer tapered portion 26, is partitioned into a second air chamber 36 ₂ of the lower. Thus a plurality of first air supply nozzles 37, 37 ... which communicates the outer end to the first air chamber 36 ₁ is disposed on the tapered surface 28a to supply combustion air to the first combustion chamber 33, the outer end second air chamber 36 of the plurality of ₂ communicates with the second air supply nozzles 38, 38 ... it is disposed in the upper portion of the riser 24 to supply combustion air to the upper portion of the second combustion chamber 34.

The first air supply nozzles 37, 37
.. Are for supplying combustion air to the first combustion chamber 33 only to cause the refuse 9 to slowly burn in the first combustion chamber 33, and are compared in FIGS. 2 and 3 for easy understanding. Although it is drawn with a large diameter, it is actually formed with a relatively small diameter. Further, the plurality of second air supply nozzles 38, 38
... the inner diameter of the first and second air chamber 36 _1, 36 ₂ of the first air supply nozzle 3 more when the air pressure is the same
The second air supply nozzles 38, 38,... Can be supplied to the second combustion chamber 34 with an amount of combustion air exceeding the total amount of combustion air supplied from the second air supply nozzles 7, 37,.

Further, the plurality of first air supply nozzles 37, 3
7 are the first from the air supply nozzles 37, 37.
The injection direction is aligned with the direction in which the air supplied into the combustion chamber 33 is swirled along the tapered surface 28a.
And a plurality of second air supply nozzles 3
8, 38... Also have their second air supply nozzles 38, 38.
, And the rising direction of the rising pipe 2 is adjusted so that the air supplied from the second combustion chamber 34 is swirled along the upper inner surface of the second combustion chamber 34.
4 is disposed above.

The discharge port of the first and second air chamber 36 _1, 36 ₂ sirocco fan 39 are commonly connected,
The plurality of first air supply nozzles 37, 37 and the plurality of second air supply nozzles 38, 38 are supplied with pressurized air from a common sirocco fan 39. Moreover, the discharge port of the sirocco fan 39 and the second air chamber 36
_In the middle of the conduit 57 connecting the _two, an opening control capable of switching between a state in which the opening of the conduit 57 is fully opened and a state in which the opening of the conduit 57 is reduced from the full opening by a predetermined opening. A valve 58 is provided. Further, an air suction pipe 18 for sucking air is connected to a suction port of the sirocco fan 39.

On the outer surface of the incinerator main body 22, a constriction 40 corresponding to a continuous portion between the lower portion of the first combustion chamber 33 and the upper portion of the second combustion chamber 34 is provided with a small-diameter cylindrical portion 25 and an outer tapered portion. The sirocco fan 39 is fixedly arranged in a space 41 formed outside the constricted portion 40.

The dust 9 in the first combustion chamber 33 is compressed and pressed against the tapered surface 28a by the weight 42 inserted into the first combustion chamber 33 from above the dust 9. The weight 42 is formed in the shape of a disk having a circular cross section, and is housed in the large-diameter cylindrical portion 27 so as to be able to move up and down such that the lower limit position is regulated by the upper end of the tapered surface 28a.
The amount of protrusion of the plurality of protrusions 55 projecting from the cylindrical inner surface 27a of the first combustion chamber 33 from the cylindrical inner surface 27a is determined by setting the tips of the protrusions 55 to the outer peripheral surface of the weight 42. Is set so as not to obstruct the vertical movement of the weight 42.

The first combustion chamber 3 is located below the tapered surface 28a.
A three-dimensional lattice-shaped rostral 43 extending upward covering the outlet 35 of the third roaster 3 is attached with its basic outer shape as a truncated cone, and a plurality of openings 44, 44. Are smaller than the opening area of the outlet 35, but the total opening area of all the openings 44, 44 is larger than the opening area of the outlet 35. You.

An electric heater 4 is provided at a lower portion in the first combustion chamber 33.
5 are provided. The electric heater 45 is configured by housing a heat-generating element such as a nichrome wire in a pipe made of a heat-resistant and corrosion-resistant material, for example, stainless steel. A pair of support arms 45 arranged at inwardly spaced positions along the surface 28a and penetrating the inner tapered portion 28
a, 45a, it is fixed to the inner tapered portion 28.

An outlet pipe 46 is disposed substantially horizontally above the box base 23 in the incinerator main body 22, and a connecting pipe 47 leading to the inside of the box base 23 is provided at an intermediate portion of the outlet pipe 46. Connected. One end of the outlet pipe 46 first blower fan 48 for introducing outside air is provided, the other end of the outlet pipe 46 is connected to the first heating tank 13 _1, first blast fan 48
Of the incinerator body 2
The combustion gas from the second combustion chamber 34 in the inside 2 passes through the outlet pipe 46 together with the incineration ash while lowering the temperature, and flows through the first heating tank 13.
It is guided to the _1. Also in the second heating tank 13 _2, the second blowing fan 49 (see FIG. 1) is provided, a second heating tank 13 by a relatively large amount of blowing by the operation of the second blowing fan 49 for introducing outside air The temperature of the combustion gas in ₂ is further lowered, and the combustion gas is introduced into the garbage disposal tank 8 through the inlet 20 together with the incineration ash.
The combustion gas after the incinerated ash is dropped into the garbage treatment tank 8 is discharged from the exhaust port 21 to the outside.

In FIG. 4, the electric heater 45 is connected to the power switch 50 via the relay switch 52, and the motor 39a of the sirocco fan 39 is connected to the power switch 50 via the relay switch 54.
A power switch 50 is connected to a first timer 51 parallel to a series circuit including a relay switch 52 and an electric heater 45 and a second timer 53 parallel to a series circuit including a motor 39a and a relay switch 54. .
The first timer 51 is for turning off the relay switch 52 after a lapse of a certain time T1 from the time when the power switch 50 is turned on. The second timer 53 is for turning off the certain time T2 after the power switch 50 is turned on. The relay switch 52 is turned on later. First timer 5
The fixed time T1 determined by 1 is set to continue heating by the electric heater 45 until the combustion of the refuse 9 in the first combustion chamber 33 can be stably continued. Is set to a time sufficient for the refuse 9 in the first combustion chamber 33 to reach the ignition temperature, for example, 2 minutes, when the energization of the electric heater 45 is started.

The motor 48a of the first blast fan 48, the temperature of the first heating tank 13 ₁ is connected in series to the first temperature switch 55 conductive in response to reaching the first predetermined temperature, the second blower motor 49a of fan 49, the second temperature switch 5 the temperature of the second heating tank 13 inside ₂ is turned on in response to reach a second predetermined temperature lower than the first set temperature
6 in series. A series circuit consisting of the motor 48a and the first temperature switch 55 is connected to the power switch 50, and the motor 49a and the second temperature switch 5
6 is connected to the power switch 50.

According to such a control circuit, as shown in FIG. 5, when the power switch 50 is turned on, the power supply to the electric heater 45 is started, and the power switch 5 is turned on.
When the first predetermined time T1 elapses from the time when the power switch 0 is turned on, the power supply to the electric heater 45 is stopped, and when the second predetermined time T2 elapses from the time when the power switch 50 is turned on, the sirocco is stopped. The operation of the fan 39 is started. The operation of the first blower fan 48, depending on the temperature of the first heating tank 13 ₁ is on-off controlled, whereby the first heating tank 1
Temperature 3 ₁ is controlled such that the temperature does not exceed the first predetermined temperature. Further operation of the second blowing fan 49, depending on the temperature of the second heating tank 13 in ₂ is on-off controlled, thereby so that the temperature of the second heating tank 13 in ₂ that the temperature does not exceed the second predetermined temperature , And the exhaust gas temperature can be kept relatively low.

[0034] In FIG. 1 again, the operation of the opening control valve 58 provided midway of the conduit 57 connecting the _second discharge port and the second air chamber 36 of the sirocco fan 39 by control means 59 composed of a microcomputer The control means 59 monitors the properties of the exhaust gas from the second combustion chamber 34 to detect whether the combustion state of the refuse in the first combustion chamber 33 has become a smoke state. as the exhaust gas sensor, for example, in which the detection value of the O ₂ sensor 60 is inputted, the O ₂ sensor 60, for example attached to the top of the box-shaped base 23.

The control means 59 determines that the O ₂ concentration in the exhaust gas detected by the O ₂ sensor 60 is a value which is caused by the smoldering state in the first combustion chamber 33, that is, a relatively high value. Until the opening, the opening of the opening control valve 58 is kept in the fully open state. As a result, a relatively small amount of combustion air enough to slowly burn the debris in the first combustion chamber 33 is supplied from the first air supply nozzles 37 to the first combustion chamber 33. Combustion air exceeding the amount of combustion air supplied from the first air supply nozzles 37 is supplied to the second combustion chamber 34 from the second air supply nozzles 38 in order to completely burn unburned gas. On the other hand, when the O ₂ concentration in the exhaust gas detected by the O ₂ sensor 60 becomes a value caused by the smoldering state in the first combustion chamber 33, that is, a relatively high value, the control unit 59 , The opening of the opening control valve 58 is reduced by a predetermined opening from the fully opened state. Whereby with the combustion air amount supplied to the first air supply nozzles 37 ... from the first combustion chamber 33 is made to increase than before state detecting fouling, the second air in response to a second pressure drop of the air chamber 36 ₂ The amount of combustion air supplied from the supply nozzles 37 is reduced as compared with before the detection of the smoking state.

Next, the operation of this reference example will be described. When the refuse 9 is incinerated and reduced in the refuse incinerator 5, a weight is placed above the refuse 9 introduced into the first combustion chamber 33 from the refuse inlet 30. 42 and garbage inlet 3
0 is closed with a lid 31. As a result, the dust 9 in the first combustion chamber 33 is compressed by the weight 42 while the tapered surface 28 is compressed.
a.

In this state, when the power switch 50 is pressed to make it conductive, first, the power supply to the electric heater 45 is started. At this time, since the electric heater 45 is arranged at a position inwardly spaced along the tapered surface 28a, the dust 9 can be brought into contact with the electric heater 45 over a relatively wide range near the tapered surface 28a. Thus, the dust 9 in a relatively wide range can be heated as the surface temperature of the electric heater 45 rises. Moreover, the refuse input port 30 by the lid member 31
The air supply from above to the first combustion chamber 33 is prevented by the hermetic seal, and the air supply is insufficient.
The refuse 9 in the combustion chamber 33 does not burn up at a stretch,
Further, since the first and second blowers 48 and 49 are also stopped, smoke is not discharged outside.

When the second set time T2 elapses after the start of energization of the electric heater 45, the operation of the sirocco fan 39 is started, and the refuse 9 reaching the ignition temperature is removed from the first combustion chamber 3
The supply of air to 3 will more reliably ignite. Moreover, the supply of air to the first combustion chamber 33 is performed by the plurality of first air supply nozzles 37, 3 disposed on the tapered surface 28a.
.., And the combustion air can be effectively supplied to the vicinity of the electric heater 45, so that the ignition of the refuse 9 becomes more reliable, and the refuse 9 is more stable in the vicinity of the tapered surface 28a. Combustion can be started.

It should be noted that not only when the electric heater 45 is ignited,
Electricity may be continuously supplied during the combustion, so that the continuation of the combustion in the first combustion chamber 33 can be further ensured.

After the ignition of the refuse 9, the first combustion chamber 3
The refuse 9 which is in a state of being compressed in 3 continues the gentle combustion near the tapered surface 28a by a relatively small amount of combustion air supplied from the first air supply nozzles 37, 37. , Generated incomplete combustion gas when flowing from the first combustion chamber 33 to the second combustion chamber 34 is supplied to the upper portion of the second combustion chamber 34 from the second air supply nozzles 38, 38,. The combustion air is allowed to burn with a higher complete burnup.

In order to stably continue the gradual combustion in the first combustion chamber 33, it is necessary to reliably supply air to the combustion portion near the tapered surface 28a at an appropriate supply speed. Thus, no combustion air is supplied from above the first combustion chamber 33, and the plurality of first air supply nozzles 37, 37,.
.. Are arranged so that the combustion air supplied from 7, 7,... To the first combustion chamber 33 is swirled along the tapered surface 28a, so that the combustion air is required to maintain gentle combustion. The combustion air at a constant speed.
The fuel can be supplied to the combustion section near “a”. In addition, since the air generates a swirling flow in the first combustion chamber 33,
The gas retention time in the first combustion chamber 33 can be made relatively long, and the occurrence of uneven combustion in the first combustion chamber 33 can be suppressed as much as possible.

The second combustion chamber 34 has a flow area larger than the opening area of the outlet 35 at the lower end of the first combustion chamber 33 and is continuous with the first combustion chamber 33. When the gas flows to the second combustion chamber 34, the gas flow is restricted at the outlet 35 of the first combustion chamber 33,
Even if combustion unevenness occurs in the first combustion chamber 33, the incomplete combustion gas or smoke and the high-temperature gas generated by complete combustion are effectively mixed at the outlet 35, and the second air supply nozzle 38 , 38... From the outlet 35.
Since the mixture is supplied to the upper portion of the second combustion chamber 34 toward the mixed gas from the combustion chamber, it is possible to achieve combustion with a higher complete burnup.

In the first combustion chamber 33, the tapered surface 28
The combustion of the refuse 9 is continued only in the vicinity of a.
When the steam and unburned gas generated from the unburned refuse 9 by the combustion chamber in the first combustion chamber 33 rise by convection and come into contact with the cylindrical inner side surface 27a, they are cooled to become a tar-like liquid,
This wets the cylindrical inner surface 27a. Therefore, garbage 9
If papers that are not rounded are mixed in, the papers are likely to stick to the cylindrical inner surface 27a. However, a plurality of protrusions 55 project from the cylindrical inner side surface 27a, and even if the cylindrical inner side surface 27a is wet, the contact area of the paper with the cylindrical inner side surface 27a is controlled by each of the protrusions 55. As a result, the sticking of papers to the cylindrical inner side surface 27a is prevented as much as possible. Therefore, the weight 42 smoothly descends, and stable combustion on the tapered surface 28a is guaranteed.

By the way, when the O ₂ sensor 60 detects that the smoldering state occurs in the first combustion chamber 33 at the end of combustion, the control means 59 controls the first air supply nozzle 37.
Is increased, and the combustion air reaches the smoldering garbage layer, so that the refuse 9 is burned in a state close to complete combustion and smoke and Odor can be prevented as much as possible. Moreover, the amount of combustion air supplied from the second air supply nozzles 38 is reduced according to the detection of the smoldering state.
4, the unburned gas can be completely burned, and the generation of smoke and odor can be more reliably prevented.

In addition, the amount of combustion air supplied from the first air supply nozzles 37 is increased, and the amount of combustion air supplied from the second air supply nozzles 37 is increased.
In controlling the reduction of the supply amount of combustion air from the first and second air supply nozzles 37, 38, the first and second air supply nozzles 37, 38,. Since it is connected to the sirocco fan 39 and the control means 59 only changes the opening of the opening control valve 58, complicated air supply control is not required.

[0046] In the present embodiment, the second air supply nozzles 38, 38 ... is disposed above the second combustion chamber 34 in the vertical direction the same level, the second at a plurality of locations spaced vertically The plurality of second air supply nozzles 38 may be disposed above the combustion chamber 34 to supply the combustion air over a relatively wide range above the second combustion chamber 34.

Further, a constricted portion 40 is formed on the outer surface of the incinerator main body 22, and the sirocco fan 39 is disposed in the space 41 outside the constricted portion 40. It is possible to arrange the incinerator 5 closer to the 22 side, so that the entire incinerator 5 can be configured more compactly.

By the way, when ash generated by combustion in the first combustion chamber 33 or incompletely burned material which has become brittle due to the progress of combustion to some extent falls by gravity, the first combustion chamber 33 If the outlet 35 is blocked even momentarily, the flow of the supply air and the combustion gas in the first combustion chamber 33 is disturbed, and the combustion becomes unstable even temporarily. However,
At the lower portion of the tapered surface 28a, a three-dimensional lattice-shaped rostrator 43 extending upward so as to cover the outlet 35 is attached, and the sum of the opening areas of the plurality of openings 44, 44. The opening area of each of the openings 44 is smaller than the opening area of the outlet 35. Therefore, the fallen ash, incompletely burned substances, and the like, which are larger than the opening area of the outlet 35, can be temporarily retained around the rostrum 43 in a range wider than the opening area of the outlet 35. Since the total opening area of the openings 44 is sufficiently large, the gas flow is not obstructed by the roastles 43. Also, by being blown off by the gas flow, each of the openings 44, 44.
Ash and incompletely burned materials that have become smaller than
3 to the outlet 35, but since the individual opening area of each of the openings 44 is smaller than the opening area of the outlet 35, the outlet 35 is not blocked by the falling objects, and the first combustion chamber It is possible to prevent the flow of the supply air and the combustion gas in the inside 33 from being disturbed, and to maintain more stable combustion.

In such a waste incinerator 5, since the waste 9 is continuously burned little by little near the tapered surface 28a, the amount of heat generated per unit time does not increase. Can be avoided, and the restriction on the installation location due to the high temperature of the incinerator 5 when used at home or the like can be eliminated. Also, the gradual continuation of the combustion of the refuse 9 suppresses the amount of combustion gas generated per unit time, and suppresses the generation of unburned gas as much as possible by sufficiently supplying combustion air. Exhaust gas can be purified as much as possible. Therefore, the refuse incinerator 5 can be installed in each household with almost no problem, and the refuse 9 is incinerated in such a manner that the refuse 9 is disposed of frequently every time the refuse 9 comes out. , The weight can be reduced.

The combustion gas discharged from the refuse incinerator 5 is directed to the first and second heating tank 13 _1, 13 _2, these heating tank 13 _1, at 13 _2, Ryogen'yo treatment tank 6,
The amount of heat from the combustion gas is transmitted to 7 and the garbage disposal tank 8. This makes it possible to reduce the volume by heating the PET bottle 16 and the Styrofoam product 17 and the like which are pressurized by the weights 16 and 17 in both the volume reduction treatment tanks 6 and 7. The garbage processing tank 8 can be maintained at an optimum temperature suitable for organic processing such as fermentation volume reduction.
Thus, the heat transfer and the first and second blowing fans 48,
The temperature of the gas exhausted from the exhaust port 21 can be reduced by the air mixing from the exhaust port 49.

[0051] Figure 6 shows the actual施例of the present invention,
Portions corresponding to the above reference example are denoted by the same reference numerals.

In this embodiment, a plurality of protrusions 61 extending in the axial direction of the cylindrical inner surface 27a are formed on the cylindrical inner surface 27a of the first combustion chamber 33.
Are protruded integrally at an interval in the circumferential direction. Other structures
The configuration is the same as in the above reference example.

[0053] With such a projection 61 ..., the participants
Remarks Example as well as to prevent the sticking of the paper into the cylindrical inner surface 27a as much as possible, to continue stable combustion becomes possible as enable smooth descent of the weight 44.

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the appended claims. It is possible to do.

[0055]

According to the invention of claim 1 Symbol placement as the foregoing, dust that is pressed against the tapered surface by the weight so as to gradually burned in the vicinity of the tapered surface, the heat generation amount per unit time Increasing the amount of combustion gas and reducing the amount of combustion gas, eliminating restrictions on the installation location when using it in households, etc. It becomes possible. Moreover, even if the inner cylindrical surface is wet with a tar-like liquid, the plurality of protrusions protruding from the inner cylindrical surface prevents paper from sticking to the inner cylindrical surface as much as possible.
It is possible to smoothly lower the weight and continue stable combustion. In addition, the plurality of protrusions are formed on the axis of the cylindrical inner surface.
Position extending in the circumferential direction and spaced in the circumferential direction of the cylindrical inner surface
Placed in

According to the second aspect of the present invention, the unburned gas generated by the gentle combustion in the vicinity of the tapered surface is completely burned in the lower combustion chamber, thereby purifying the exhaust gas as much as possible. It can be used more effectively as a waste disposal device to be used.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an entire waste disposal apparatus including a waste incinerator according to a reference example.

FIG. 2 is a longitudinal sectional view of a refuse incinerator.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is a diagram showing a control circuit of an electric heater and a fan motor.

FIG. 5 is an operation timing chart of an electric heater and a fan.

[Figure 6] Example of the present invention, is a longitudinal sectional view corresponding to FIG.

[Explanation of symbols]

9: Garbage 22: Incinerator body 27a: Cylindrical inner surface 28a: Tapered surface 33, 34: Combustion chamber 35: Outlet 37, 38 ... Air supply nozzle 42 ..Plummet 6 1 ... Protrusion

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F23G 5/44 F23G 5/16

Claims (2)

(57) [Claims] A combustion chamber (1) having a shape in which a tapered surface (28a) is connected to a lower end of a cylindrical inner surface (27a) having a cross-sectional area substantially constant along an axial direction and narrows downward. An incinerator main body (22) having a structure (33) and capable of introducing dust (9) from above the combustion chamber (33) and preventing air from being supplied to the combustion chamber (33) from above; A weight (42) which is capable of pressing dust (9) in the combustion chamber (33) toward the tapered surface (28a) and is vertically movably accommodated in the combustion chamber (33); An air supply nozzle (37) provided in the incinerator body (22) for supplying combustion air for gently burning the dust (9) in the combustion chamber (32) near the tapered surface (28a); And the cylindrical inner surface (27
in a), close to the outer circumferential surface of the weight (42), a plurality of projections that face (6 1) is projected integrally, the plurality of projections (6
1) extends in the axial direction of the cylindrical inner surface (27a).
At a position spaced apart in the circumferential direction of the cylindrical inner surface (27a).
A refuse treatment apparatus characterized by being disposed . 2. Another combustion chamber (34) connected to the combustion chamber (33) through an outlet (35) formed at the lower end of the tapered surface (28a) is formed in the incinerator body (22). An air supply nozzle (38) different from the air supply nozzle (37) is supplied to the incinerator body (22) to supply combustion air for burning unburned gas to the other combustion chamber (34). The refuse treatment apparatus according to claim 1, wherein the refuse disposal apparatus is provided .