JPH09303730A - Garbage treatment equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily incinerate the garbage and to reduce the volume thereof with little problems at each home by reducing the burning speed of the garbage to control the calorie generated per unit time and to reduce restriction of an installation place as much as possible. SOLUTION: A combustion chamber 33 in which the garbage can be thrown and the air supply from an upper part can be prevented is formed in an incinerator body 22 with a tapered face 28a which Is smaller in diameter downward as a lower side and with a lower end as an outlet 35. A plurality of air feed nozzles 37 to feed the air for combustion to continue gradual combustion of the garbage which is pressed against the tapered face and pressed are arranged on the tapered face 28a.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Garbage discharged from households and the like 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 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.

[0003] 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. Sho 62-119317, are incinerated and reduced at each household level.

[0004]

However, in the above-mentioned conventional incinerator, the location of the incinerator becomes high due to the high temperature of the incinerator accompanying the combustion of the waste, and the large amount of combustion gas discharged in a short time is required. It is necessary to give due consideration to the adverse effects caused by this, and there is a problem that it is difficult to use in general households.

The present invention has been made in view of the above circumstances, and slows down the burning rate of dust to suppress the heat generation amount per unit time as much as possible, and the place of installation is restricted as much as possible.
It is an object of the present invention to provide a waste treatment device that can easily incinerate and reduce the amount of waste in each home without any problems.

[0006]

In order to achieve the above-mentioned object, the invention according to claim 1 is such that a combustion chamber capable of throwing in dust and blocking air supply from above is provided at a lower position. A plurality of airs for supplying combustion air that is formed in the incinerator body with the taper surface having a smaller diameter toward the lower side surface and the lower end as an outlet and is pressed against the taper surface to continue the combustion of the compressed dust gently The supply nozzle is arranged on the tapered surface.

[0007] The invention according to claim 2 provides the above-described claim 1.
In addition to the configuration of the invention described above, the plurality of air supply nozzles are arranged on the tapered surface such that the air supplied from the air supply nozzles into the combustion chamber is swirled along the tapered surface so that the injection direction is aligned. It is characterized by being installed.

According to a third aspect of the present invention, in addition to the structure of the first or second aspect of the present invention, the opening area is enlarged below the opening area of the outlet below the outlet of the combustion chamber. A second combustion chamber that communicates with the combustion chamber is formed in the incinerator body, and a plurality of second air supply nozzles are arranged above the second combustion chamber.

According to a fourth aspect of the invention, in addition to the configuration of the third aspect of the invention, the sum of the combustion air amounts supplied from the plurality of second air supply nozzles to the second combustion chamber is It is characterized in that it is set to be larger than the total sum of the combustion air amounts from the plurality of air supply nozzles for supplying combustion air to the combustion chamber arranged above the two combustion chambers.

Further, the invention according to claim 5 is characterized in that, in addition to the constitution of the invention according to claim 3 or 4, the respective air supply nozzles are connected to a common fan.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

1 to 5 show an embodiment of the present invention, FIG. 1 is a diagram showing the overall construction of a refuse treatment apparatus including a refuse incinerator, and FIG. 2 is a vertical sectional view of the refuse incinerator. 3 is a sectional view taken along line 3-3 of FIG. 2, FIG. 4 is a diagram showing a control circuit for the electric heater and fan motor, and FIG. 5 is an operation timing chart of the electric heater and fan.

First, referring to FIG. 1, the waste treatment device is
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, the waste incinerator 5 incinerates the combustible waste 9, whereas the first volume reduction treatment tank 6 is for reducing the volume of the PET bottle 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 food waste treatment tank 8 is for performing organic treatment such as fermentation volume reduction on the food waste 12.

[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 openable and closable lid members 14 and 15, 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 both volume reduction treatment tanks 6 and 7 is mixed with combustion air and guided to the refuse incinerator 5, and both volume reduction treatment tanks 6 and 7 are provided in the air suction pipe line 18. Are connected to each other.

A second heater is provided at a position adjacent to the first heating tank 13 ₁ .
A heating tank 13 ₂ is arranged, and both heating tanks 13 ₁ , 13
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 upper end opening of the food waste processing tank 8 is closed by an openable / closable lid member 19, and the combustion gas or the like from the second heating tank 13 ₂ is placed in the food waste processing tank 8 at the upper part of the food waste processing tank 8. An inlet port 20 for introducing the fuel gas into the raw garbage processing tank 8 and an exhaust port 21 for discharging the combustion gas introduced into the food waste treatment tank 8 to the outside are provided.

Referring also to FIG. 2, the incinerator body 22 of the refuse incinerator 5 has a box-shaped base portion 23 formed in a rectangular box shape.
A rising pipe portion 24 which is formed in a tapered shape having a smaller diameter as it goes upward and rises from a substantially central portion of the box-shaped base portion 23; A small-diameter cylindrical portion 25 extending outwardly, 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 continuously connected to the upper end of the outer tapered portion 26 and extending upward; and a large-diameter cylindrical portion 27 having a larger diameter as it goes upward, and an inner side of the outer tapered portion 26. And a lower end portion of the inner taper portion 28 is fixed to the upper end of the riser tube portion 24 so that the lower end 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 body 22 as described above is fixedly supported by a mount 29 arranged on the floor surface. The upper end opening of the large-diameter cylindrical portion 27 is opened to function as a refuse inlet 30 into the incinerator main body 22, and the refuse inlet 30 is closed by an openable / closable lid member 31. It is possible.

A combustion chamber 32 is formed in the incinerator main body 22 for incinerating the dust 9 charged from the dust charging port 30. The combustion chamber 32 has an inner surface of the inner tapered portion 28. A first combustion chamber 33 formed in a shape narrowing downward with the tapered surface 28a being a lower side surface,
The second combustion chamber 34 is connected to the lower end of the first combustion chamber 33.

The first combustion chamber 33 has an outlet 35 at its lower end, and the outlet 35 is formed by the lower end of the tapered surface 28a. In addition, the dust inlet 30 is attached to the lid member 3
By closing at 1, the air supply to the first combustion chamber 33 from above is blocked. The second combustion chamber 34 is formed in the rising pipe portion 24 and the box-shaped base portion 23,
It is formed in the incinerator main body 22 so that the flow area is larger than the opening area of the outlet 35 at the lower end of the first combustion chamber 33, that is, below the outlet 35.

Referring also to FIG. 3, the small-diameter cylindrical portion 25,
An annular air 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 rising pipe portion 24 and the inner tapered portion 28, and the outer end thereof is located in the air chamber 36. A plurality of first air supply nozzles 37, 3 which are in communication with each other
7 are arranged on the tapered surface 28a to supply combustion air to the first combustion chamber 33, and a plurality of second air supply nozzles 38, 38 ... It is disposed above the riser pipe 24 to supply combustion air to the upper portion of the chamber 34.

By the way, the first air supply nozzles 37, 37
.. Are provided for supplying combustion air to the first combustion chamber 33 so as 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 depicted with a large diameter, it is actually formed with a relatively small diameter. Further, the plurality of second air supply nozzles 38, 38
... supplies the second combustion chamber 34 with combustion air in an amount exceeding the total amount of combustion air supplied from the plurality of first air supply nozzles 37, 37. The inner diameter of the first air supply nozzles 37, 37, ... And the second air supply nozzles, so that the air distribution amount to the second air supply nozzles 38, 38 ... Is determined as described above. The inner diameters of 38, 38 ... Are set respectively.

Moreover, a 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
, 38, are also the 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.

A discharge port of a sirocco fan 39 is connected to the air chamber 36, and a 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 first air supply nozzles 37, 3
7 and second air supply nozzles 38, 38 ... In order to generate a swirling air flow in the same direction as the swirling air flow direction in the air chamber 36, air is discharged in a tangential direction of the air chamber 36 having a circular cross section. The sirocco fan 39 is connected to the small-diameter cylindrical portion 25 so that the directions thereof substantially coincide with each other. An air suction conduit 18 for sucking air is connected to the suction port of the sirocco fan 39.

On the outer surface of the incinerator main body 22, there is formed a constricted portion 40 corresponding to a continuous portion of the lower portion of the first combustion chamber 33 and the upper portion of the second combustion chamber 34, and the small diameter cylindrical portion 25 and the 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 a weight 42 as a compression / pressing means. The weight 42 is formed in a circular cross section with an outer surface that is close to and opposite to the inner surface of the large-diameter cylindrical portion 27, and the lower limit position is restricted by the upper end of the tapered surface 28a. It is housed in the large-diameter cylindrical portion 27 so as to be vertically movable.

The first combustion chamber 3 is provided 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 the 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 in the lower part of the first combustion chamber 33.
5 are provided. The electric heater 45 is constructed by housing a heating element such as a nichrome wire in a pipe made of a material having heat resistance and corrosion resistance, for example, stainless steel. For example, the electric heater 45 is formed in a substantially circular arc shape and has a taper. A pair of support arm portions 45 arranged at positions spaced inwardly along the surface 28a and penetrating the inner tapered portion 28.
a, 45a, it is fixed to the inner tapered portion 28.

A lead-out pipe 46 is arranged substantially horizontally above the box-shaped base 23 in the incinerator body 22, and a connecting pipe 47 leading to the inside of the box-shaped base 23 is provided in the middle of the lead-out 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
Due to the relatively large amount of air blown by the operation of the
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 from 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 39 a 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 constant 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 sufficient time, for example, 2 minutes, for the refuse 9 in the first combustion chamber 33 to reach the ignition temperature with the start of energization of the electric heater 45.

The motor 48a of the first blower fan 48 is connected in series to the first temperature switch 55 which is turned on in response to the temperature inside the first heating tank 13 ₁ reaching the first set temperature, and the second blower fan 48 is connected. The motor 49a of the fan 49 is electrically connected to the second temperature switch 5 when the temperature in the second heating tank 13 ₂ reaches a second set temperature lower than the first set temperature.
6 in series. The 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
The series circuit composed of 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 electric heater 45 is energized and the power switch 5 is turned on.
0 is turned off, the power supply to the electric heater 45 is stopped when the first predetermined time T1 elapses, and the sirocco is turned on when the second predetermined time T2 elapses after the power switch 50 is turned on. 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 is kept relatively low.

Next, the operation of this embodiment will be described. When incinerating and reducing the amount of the waste 9 in the waste incinerator 5, a weight is placed above the waste 9 introduced into the first combustion chamber 33 from the waste inlet 30. Place 42 and put the garbage in 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 bring it into conduction, first the electric heater 45 is energized. At this time, since the electric heater 45 is arranged at a position spaced inwardly along the tapered surface 28a, the dust 9 should be brought into contact with the electric heater 45 over a relatively wide range near the tapered surface 28a. Electric heater 4
A relatively wide range of dust 9 can be heated as the surface temperature of 5 rises. Moreover, since the dust input port 30 is closed by the lid member 31, the air supply to the first combustion chamber 33 from above is blocked, and the air supply is insufficient, so that the dust 9 in the first combustion chamber 33 is removed. It does not burn up all at once, and since the first and second blowers 48 and 49 also remain stopped, smoke is not emitted to the outside.

After the start of energization of the electric heater 45, when the second set time T2 elapses, the operation of the sirocco fan 39 is started, and the dust 9 that has reached the ignition temperature remains in 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 28 a. Combustion can be started.

Not only when the electric heater 45 is ignited,
Electricity may be continuously supplied during combustion, so that combustion in the first combustion chamber 33 can be continued more reliably.

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

In order to continue the gentle combustion in the first combustion chamber 33 in a stable manner, it is necessary to reliably supply the air to the combustion section near the tapered surface 28a at an appropriate supply rate. 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 in such a direction that the combustion air supplied from 7, 37... Into the first combustion chamber 33 is swirled along the tapered surface 28a, so that it is necessary to continue gradual combustion. The combustion air at a constant speed.
The fuel can be supplied to the combustion section near “a”. Moreover, since the air generates a swirling flow in the first combustion chamber 33,
It is possible to make the gas retention time in the first combustion chamber 33 relatively long and suppress the occurrence of combustion unevenness in the first combustion chamber 33 as much as possible.

The second combustion chamber 34 has a circulation 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 mixed gas is supplied to the upper part of the second combustion chamber 34 toward the mixed gas, combustion with higher complete burnup can be achieved.

Further, since pressurized air is supplied from the common sirocco fan 39 to the first air supply nozzles 37, 37, ... And the second air supply nozzles 38, 38 ,. The single sirocco fan 39 makes it possible to contribute to the reduction of the number of parts. Further, by setting the inner diameters of the plurality of first air supply nozzles 37, 37 ... And the inner diameters of the plurality of second air supply nozzles 38, 38 ..., the amount of air supplied from a single sirocco fan 39 is changed to the first combustion. A relatively small amount of air to the chamber 33 side,
It can be easily distributed to a relatively large amount of air to the combustion chamber 34 side, and complicated air supply amount control is unnecessary.

In this embodiment, the second air supply nozzles 38, 38 ... Are arranged at the same level in the vertical direction above the second combustion chamber 34. A plurality of second air supply nozzles 38, 38, ... May be arranged above the combustion chamber 34 to supply 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 body 22, and the sirocco fan 39 is arranged in the space 41 outside the constricted portion 40. It can be arranged closer to the 22 side, and the whole incinerator 5 can be made more compact.

By the way, when the ash generated by the combustion in the first combustion chamber 33, the incompletely burned material which becomes brittle due to the progress of the combustion to some extent, falls in the first combustion chamber 33 due to gravity. If the outlet 35 is blocked even momentarily, the flow of the supply air or the combustion gas in the first combustion chamber 33 is disturbed and the combustion becomes unstable even if 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, of the ash and incompletely burned materials that have fallen, those 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. Further, 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 object, 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 refuse incinerator 5, since the dust 9 is continuously burned little by little in the vicinity of the tapered surface 28a, the amount of heat generated per unit time does not increase, and therefore the incinerator main body 22 has a high temperature. It is possible to avoid such a situation, and to eliminate the restriction on the installation place that accompanies the high temperature of the incinerator 5 when it is used at home. In addition, 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 garbage 9 is incinerated by being disposed of frequently every time the garbage 9 comes out, with the feeling that the refuse is disposed of in the trash box. , It is possible to reduce the weight.

The combustion gas discharged from the refuse incinerator 5 is introduced into the first and second heating tanks 13 ₁ and 13 ₂ , and in these heating tanks 13 ₁ and 13 ₂ , both volume reduction treatment tanks 6 and 6 are introduced.
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 that 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.

Although the embodiments of the present invention have been described in detail above, 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 claims. It is possible to do.

[0047]

As described above, according to the first aspect of the present invention, the combustion chamber capable of introducing dust and blocking the supply of air from above has a taper that becomes smaller in diameter toward the bottom. A plurality of air supply nozzles that are formed in the incinerator body with the surface as the lower side surface and the lower end as the outlet, are pressed against the tapered surface, and that supply combustion air for slowly and continuously burning the compressed dust. The combustion air is effectively supplied only in the vicinity of the taper surface, and the gradual combustion of dust can be continued only in the vicinity of the taper surface, and the amount of heat generated per unit time and the amount of combustion gas generated are compared. It is possible to incinerate and reduce the amount of waste by eliminating the restrictions on the installation place when using it at home etc. and disposing of it frequently at each household when it occurs.

According to the invention described in claim 2, in addition to the structure of the invention described in claim 1, a plurality of air supply nozzles tap the air supplied from the air supply nozzles into the combustion chamber. Since the injection direction is aligned in the direction of swirling along the surface and the tapered surface is provided, the gas retention time in the combustion chamber can be made relatively long and the generation of unburned gas can be suppressed as much as possible.

According to the third aspect of the present invention, in addition to the structure of the first or second aspect of the invention, the opening area is enlarged below the opening area of the outlet of the combustion chamber. A second combustion chamber that communicates with the combustion chamber is formed in the incinerator body, and a plurality of second air supply nozzles are provided above the second combustion chamber, so incomplete combustion that accompanies gradual combustion. It is possible to effectively mix the gas and the high-temperature gas obtained by complete combustion, and to make the combustion more reliable in combination with the air supply from the second air supply nozzle.

According to the invention of claim 4, in addition to the configuration of the invention of claim 3, the sum of the combustion air amounts supplied from the plurality of second air supply nozzles to the second combustion chamber is:
Since it is set to be larger than the sum of the combustion air amounts from the plurality of air supply nozzles that supply combustion air to the combustion chamber arranged above the second combustion chamber, the combustion of the dust is gentle,
It is possible to achieve combustion with higher complete burnup.

According to the invention of claim 5, in addition to the configuration of the invention of claim 3 or 4, since each of the air supply nozzles is connected to a common fan, it contributes to a reduction in the number of parts. be able to.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an entire refuse processing apparatus including a refuse incinerator.

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

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

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

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

[Explanation of symbols]

 9 ... Garbage 22 ... Incinerator body 28a ... Tapered surface 33 ... Combustion chamber 34 ... Second combustion chamber 35 ... Outlet 37 ... Air supply nozzle 38 ... Second Air supply nozzle 39 ・ ・ ・ Fan

Claims (5)

[Claims] 1. A combustion chamber (33) capable of throwing in dust (9) and blocking air supply from above.
Was formed in the incinerator body (22) with the tapered surface (28a) having a smaller diameter toward the lower side as the lower side surface and the lower end as the outlet (35), pressed against the tapered surface (28a), and compressed. A waste treatment apparatus, wherein a plurality of air supply nozzles (37) for supplying combustion air for slowly and continuously burning the waste (9) are arranged on the tapered surface (28a). 2. The plurality of air supply nozzles (37) are
The taper surface (28a) is arranged so that the air supplied from the air supply nozzles (37) into the combustion chamber (33) is swirled along the taper surface (28a).
The waste treatment device according to claim 1, wherein the waste treatment device is disposed in the. 3. A second combustion chamber (3) which communicates with the combustion chamber (33) with an opening area larger than the opening area of the outlet (35) below the outlet (35) of the combustion chamber (33). Three
4) is formed in the incinerator body (22), and a plurality of second air supply nozzles (38) are arranged above the second combustion chamber (34). Waste treatment equipment. 4. The plurality of second air supply nozzles (38)
A plurality of air supply nozzles for supplying the combustion air to the combustion chamber (33) arranged above the second combustion chamber (34) with the total amount of the combustion air supplied from the to the second combustion chamber (34). The waste treatment device according to claim 3, wherein the waste air treatment device is set to be larger than the sum of the combustion air amounts from (37). 5. The waste treatment device according to claim 3, wherein each of the air supply nozzles (37, 38) is connected to a common fan (39).