JPH03122415A - Waste disposing device - Google Patents

Abstract

PURPOSE:To improve the safety by a method wherein upon sensing of an increased abnormal temperature after detection of a temperature of a downstream side of a discharging port, a furnace heater, a purifying heater, an air supplying device and a dilution air blower are stopped. CONSTITUTION:A temperature sensing means 23a is arranged between a part of an air discharging cylinder 18 at an extreme end upper part of an air discharging pipe 14 and an outlet of the air discharging cylinder 18 and then a detected temperature is inputted to a control means 21. When the detected temperature exceeds a set temperature, the control means 21 may stop an electrical supply to a furnace heater 4, a load heater 11, a dilution air blower 17 and an air supplying device 9. With such an arrangement, a combustion under an abnormal increased temperature is restricted so as to prevent an increasing of pressure within the furnace. Accordingly, its safety characteristic is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a waste disposal apparatus for reducing waste by incineration.

BACKGROUND OF THE INVENTION Conventionally, this type of waste disposal apparatus has had a configuration as shown in FIG. In the figure, a heat insulating furnace material 2 is pasted on the inner surface of a combustion furnace 3 which has a lid 22 that can be opened and closed at the top, and a furnace heater 4 is fixed to the inner bottom of the furnace material 2 with its tip protruding inward. . Further, inside the combustion furnace 3, a metal processing container 5 is placed on the furnace heater 4.

A protrusion 6 that wraps around the furnace heater 4 is provided at the inner bottom of the processing container 5.
is formed, and a hole 7 is provided in the wall surface of the protrusion e. An air supply port 8 through which air flows into the processing container 6 through the hole 7 is provided on the bottom surface of the combustion furnace 3, and an air supply device 9 is provided in communication with the air supply port 8. Further, an exhaust port 10 is provided on the inner wall surface of the combustion furnace 3, and a purifier 1o comprising a purification heater 11 and a purification catalyst 12 is provided downstream of the exhaust port 10. Further, a dilution duct 16 is provided to cover the outside of the exhaust pipe 14 protruding from the downstream outlet of the evaporator 1o, and one opening 16a of the dilution duct 16 communicates with a dilution blower 17.

An exhaust pipe 18 is connected to one opening 16b.

Further, the outlet of the exhaust pipe 18 and the outlet of the exhaust pipe 14 are arranged in the same direction. These are covered by an outer shell 20.

Then, when the lid 22 is opened, the garbage 19 is thrown in, and the lid 22 is closed, the furnace heater 4 is energized, and the garbage 19 is heated and incinerated by the thermal energy of the furnace heater 4. The air required at this time is supplied into the combustion furnace 3 by the air supply device 9,
The generated exhaust gases are attracted by the attraction effect that occurs when the blown air from the dilution blower 17 flows through the opening 16 of the dilution duct 16 and into the exhaust stack 18 . After being purified in the purifier 13, the air is mixed with air from the dilution blower 17, cooled and diluted, and discharged to the outside from the exhaust pipe 18.

Problems to be Solved by the Invention In such a conventional configuration, if the dilution blower 9 were to stop or the air volume should be reduced for some reason, the attraction effect that occurs when the blown air flows around the exhaust pipe 14 is no longer present. decreases. Therefore, the pressure inside the combustion furnace 3, which is normally kept lower than atmospheric pressure, is affected by the expansion of air and the air supply device 9.
The air pressure increases above atmospheric pressure. In such a situation, if there is a problem in the sealing state of the combustion furnace 3 and the lid 22, or if there is a gap in the air supply system, some of the smoke and exhaust gas from combustion may leak directly to the outside, or There is a problem in that the exhaust gas is discharged from the exhaust stack 18 without being diluted, which is dangerous.

The present invention solves these problems by automatically and quickly determining when the dilution blower stops or the air volume decreases for some reason, and automatically and quickly determines whether the dilution blower has stopped or the air volume has decreased due to some reason. The purpose of the present invention is to provide a highly safe garbage disposal device that stops energization.

Means for Solving the Problems In order to solve the above problems, the present invention provides a processing container into which waste is input, a combustion furnace in which the processing container is housed and the waste is incinerated and reduced by a furnace heater, and a combustion furnace in which the waste is incinerated to reduce the amount of waste. An air supply device is provided with a power supply port and an exhaust port, and is connected to the power supply port, and a purifier that has a purification heater and a purification catalyst and purifies exhaust gas is provided downstream of the exhaust port. An exhaust pipe that protrudes to the downstream outlet, a dilution duct that covers the exhaust pipe and has an opening, a dilution blower that communicates with one opening of the dilution duct, and a dilution blower that communicates with the outside from the other opening. an exhaust pipe having an outlet in the same direction as the exhaust port of the exhaust pipe, and humidity detecting means provided on the downstream side of the exhaust port; This configuration includes a purification heater, a control means for stopping energization of the air supply device, and the dilution blower.

With this configuration, if the dilution blower stops or the air volume decreases during processing, the temperature detection means installed downstream of the exhaust port will detect an abnormal temperature rise in this area, and the furnace heater or Power to heat sources such as purification heaters and blowers such as air supply devices and dilution blowers will be shut off.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4. The same parts as the conventional example are given the same symbols.
A detailed explanation thereof will be omitted. In Fig. 1, combustion furnace 3
In the frame body 1 made of a highly heat-resistant material such as metal or ceramic, there is a heat-insulating furnace material 2 made of a material such as ceramic fiber that has high heat resistance and has a heat-insulating effect.
It is lined with . Furnace material 2 is installed at the inner bottom of combustion furnace 3.
A furnace heater 4 for heating the protruding waste 19 is provided in the combustion furnace 3 passing through the combustion furnace 3 . Additionally, a lid 22 is provided at the top of the combustion furnace 3, which can be opened and closed to allow garbage 19 to be thrown in.
has been established. On top of the furnace heater 4 is a protrusion 6 that wraps around the furnace heater 4 at the bottom and has a hole 7 in the wall surface.
A processing container 5 for the waste 19 that has formed is arranged, and the lid 2
Garbage 19 thrown into the container 2 is stored in the processing container 6. An air supply port 8 is also provided on the bottom of the combustion furnace 3 to allow air to flow into the processing container S, and an air supply device 9 provided in communication with the air supply port 8 is used to send the air necessary for combustion. It has become. In addition, a purifier 13f is provided which communicates with the exhaust port 1o opened in a part of the side wall of the combustion furnace 3 and purifies the exhaust gas by increasing the action of the purification catalyst 12 by the purification heater 11. The exhaust gas is purified and discharged from an exhaust pipe 14 protruding from the outlet on the downstream side of the purifier 13. Further, a dilution duct 15 is provided to cover the outside of the exhaust pipe 14, one opening 16a of this dilution duct 16 communicates with a dilution blower 17, and an exhaust pipe 18 is connected to one opening 1sb. ing. Further, the outlet of the exhaust pipe 18 and the outlet of the exhaust pipe 14 are arranged in the same direction, and the exhaust pipe 14 extends into the exhaust pipe 18. and,
A temperature detecting means 23a is provided between the exhaust pipe 18 portion at the top of the tip of the exhaust pipe 14 and the exit of the exhaust pipe 18, and when the detected temperature exceeds the set temperature H, the furnace heater 4 It is provided with a control means 21 for stopping energization of the purification heater 11, the dilution blower 1T, and the air supply device 9. Note that the set humidity H is a humidity that does not reach the end of normal processing.

The operation of the garbage processing apparatus configured as described above will be explained below. When the furnace heater 4 is energized after the garbage 19 is thrown in, the garbage 19 is heated by the thermal energy of the furnace heater 4, and is combusted and incinerated by the combustion air supplied from the air supply device 9. The exhaust gas generated at this time passes through the exhaust port 10 and is made smokeless and odorless by the purifier 13, and then is discharged to the outside through the exhaust pipe 14 and the exhaust stack 18. At this time, since the exhaust gas flowing through the exhaust pipe 14 has a high temperature, the air blown from the dilution blower 17 is guided to the dilution duct 16 to cool the exhaust pipe 14, and at the same time, the exhaust gas flows inside the exhaust pipe 18. By mixing with the exhaust gas, the high temperature exhaust gas is diluted, its temperature is further lowered, and the exhaust gas is discharged to the outside from the exit of the exhaust stack 18. On the other hand, since the outlet of the exhaust pipe 18 and the outlet of the exhaust pipe 14 are arranged in the same direction, when the blown air from the dilution blower 17 passes through the opening 16b of the dilution duct 15 and flows through the exhaust pipe 18, the The exhaust gas is forcibly discharged from the outlet of the exhaust pipe 14 due to the inducing action of the blown air. It has also been confirmed through experiments that this attracting effect increases as the volume of the blown air increases. Therefore, if this air volume is appropriately determined, the exhaust gas within the combustion furnace 3 will be forcibly discharged to the outside, and as a result, the inside of the combustion furnace 3 will be maintained at negative pressure.

However, in the unlikely event that the dilution blower 17 stops or the air volume decreases due to mechanical factors such as disconnection or locking during processing, the attracting effect that occurs when the blown air flows through the exhaust pipe 140 times 9 may be lost. ,descend. Therefore,
The pressure inside the combustion furnace 3, which is normally kept lower than atmospheric pressure, is
The pressure becomes higher than atmospheric pressure due to the expansion of air and the blowing pressure of the air supply blower 9.

Then, the exhaust gas is pushed into the purifier 13 only by the pressure inside the combustion furnace 3, purified, and discharged from the exhaust pipe 14 into the exhaust pipe 18. The discharged exhaust gas rises to the surface due to its high temperature and heats the upper part of the exhaust pipe 18, causing the temperature of this part to rise rapidly, as shown in FIG. Then, the already installed temperature detecting means 23a detects a temperature of H DEG C. or higher, and the control means 21 stops energizing the furnace heater 4, purification heater 11, dilution blower, and air supply device.

Further, another embodiment will be described based on FIGS. 3 and 4. First, in FIG. 3, the temperature detection means 23b is provided on the surface of the exhaust pipe 14 in the direction of the opening j13a. When the dilution blower 17 becomes abnormal, the opening 16 which is normally cooled together with the temperature detection means 23b by the air blown by the dilution blower 17.
The humidity on the surface of the exhaust pipe 14 in the direction a rapidly increases due to heat conduction from the exhaust gas and the purifier 13. This is sensitively detected.

The reason why the temperature detection means 23b is provided on the surface of the exhaust pipe 14 in the direction of the opening 1ea is because it is most sensitive to temperature rise.
Even if the installation location is changed, if it is on the surface of the exhaust pipe 14, the effect will remain the same except that the sensitivity will deteriorate.

Next, another embodiment will be described based on FIG. 4.

In the figure, a dilution duct 15 facing the purifier 13
A cooling hole 24 is provided on the surface of the purifier 13, and a temperature detecting means 23C is provided on the surface of the purifier 13 located in the flow path of the air blown out from the cooling hole 24.

Normally, during processing, the surface humidity of the purifier 13 is kept below the set humidity by the purification heater 4 and combustion, but this is set by cooling the temperature detection means 23c through the cooling hole 24 with the air pressure from the dilution blower 17. Keeps the temperature below. However, if the dilution blower 17 stops blowing or the air volume decreases for some reason, the cooling hole 24
The air blowing from the room also stops or decreases. Therefore, the temperature detection means 23c detects the high temperature of the purifier 13 by thermal conduction.
The temperature detection means 23C tries to reach the same temperature as the surface.
The temperature also rises rapidly.

This is sensitively detected.

Effects of the Invention As is clear from the above embodiments, the present invention has many advantages.
Even if the dilution blower stops or the air volume decreases for some reason, this is sensitively detected and combustion is suppressed in the combustion furnace by stopping power to the furnace heater, purification heater, dilution blower, and air supply device. and prevent the pressure from increasing inside the combustion furnace.

This makes it possible to provide a highly safe garbage disposal device that prevents the occurrence of defects in the sealed state of various parts and prevents smoke and exhaust gas from leaking.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view of a garbage disposal device showing an embodiment of the present invention, Fig. 2 is a characteristic diagram comparing the temperature rise of the humidity detection means during abnormal and normal times of the dilution blower, and Fig. 3 is , FIG. 4 is a sectional view of a main part of a garbage disposal apparatus showing another embodiment, and FIG. 4 is a sectional view of a main part of a waste disposal apparatus showing another embodiment.
FIG. 5 is a sectional view of a main part of a conventional garbage disposal device. 3... Combustion furnace, 4... Furnace heater, 6
...Processing container, 8...Air supply port, 9...
...Air supply device, 10...Exhaust port, 11...
...Purification heater, 12...Purification catalyst, 13.
...Purifier, 14...Exhaust pipe, 15...
... Dilution duct, 1ea, 1sb ... Opening, 17 ... Dilution blower, 18 ... Exhaust pipe, 21 ... Control means, 23a ... ...Temperature detection means.

Claims (1)

[Claims] A processing container into which waste is input, a combustion furnace that houses the processing container and reduces the amount of waste by incinerating the waste using a furnace heater, and an air supply port and an exhaust port are provided in the combustion furnace, and the air supply is communicated with the air supply port. A purifier having a purification heater and a purification catalyst and purifying exhaust gas is provided on the downstream side of the exhaust port, and further,
An exhaust pipe protruding from the downstream outlet of the purifier, a dilution duct that covers the exhaust pipe and has an opening, a dilution blower connected to one opening of the dilution duct, and a dilution blower connected to the other opening. The part communicates with the outside, and includes an exhaust pipe with an outlet arranged in the same direction as the exhaust port of the exhaust pipe, and a temperature detection means provided downstream from the exhaust port, and when a certain set temperature is reached, the A waste disposal device comprising a furnace heater, the purification heater, the air supply device, and a control means for stopping energization of the dilution blower.