JPH0481687B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an incinerator for incinerating combustible waste such as food waste, waste paper, and human waste generated at home or in business.

BACKGROUND ART An example of a waste incinerator is an incinerator that incinerates waste using gas fuel or liquid fuel. This burns fuel in a burner and uses the heat to incinerate the waste. Another new proposal is an incinerator that uses electric power, such as a heater or magnetron, as a heating source.

In particular, a method that uses a magnetron to heat and incinerate food waste and other waste using microwaves is attracting attention because it directly heats the waste, making it easy to completely incinerate.

Problems to be Solved by the Invention In such conventional garbage incinerators equipped with magnetrons, although complete incineration is easy with microwave heating, there is a problem in that odors are likely to be emitted from the exhaust gas path. It was hot.

Additionally, since microwaves do not pass through narrow spaces or metal, mist-like unburned components that stick to the waste disposal door or the gap between the door and the input port cannot be incinerated and rot. There was also the problem of the odor being generated and the odor leaking outside.

The present invention solves the above problems, and aims to provide an incinerator that does not leak odor and is compact.

Means for Solving the Problems In order to achieve the above object, the present invention provides a waste storage container for storing waste, an air chamber for removably housing the waste storage container, and an opening of the air chamber. a door for opening and closing the container; a lid made of a microwave-transmissive material and covering above the opening of the waste storage container; an air intake portion formed to surround an exhaust hole provided in the lid; an air supply means for supplying air to the air intake section; a microwave generation means for microwave heating the waste in the waste storage container;
The exhaust hole is provided in the lid and discharges the gas in the waste container, and the gas combustion chamber is disposed downstream of the exhaust hole and burns the gas.

Effects According to the above-described configuration, the present invention has an odor that is generated from heated waste and accumulates in the waste storage container. A mixed flow of air supplied to the air intake surrounding the exhaust hole of the lid and light gases generated from the heated waste is conveyed to the gas combustion chamber and burned.

This makes it difficult for gas with a mist-like odor to enter the gap between the upper edge of the waste container and the lid provided above it, which inevitably occurs when the waste container is inserted and removed. I can do it.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to FIG.

As shown in the figure, 1 is an air chamber, and a door 2 is provided on the front side of the air chamber 1 to insert and remove a waste container (hereinafter referred to as a container) 3 for storing waste G. The container 3 is detachably attached to the door 2.
The inner surface is covered with a heat insulating material, and the bottom surface is provided with a radio wave absorber 4 made of something like silicon carbide. A microwave generator 6 for microwave heating the waste G in the container 3 is connected to the opening 5 at the top of the air chamber 1 via a waveguide 7. Further, in the upper part of the air chamber 1 and above the container 3, there is a small space between the container 3 and the upper edge 3b, and it is formed of a heat insulating microwave transparent material mainly made of alumina fiber. A lid 8 is attached. An exhaust hole 12 is provided in the center of the lid 8, and an air hole 9 surrounds the exhaust hole 12.
a and 9b are provided. The air hole 9a is the container 3
An air hole 9b is provided on the inner surface of the container 3, facing the outer surface of the container 3, that is, the inside of the air chamber 1, and an air intake portion is formed by the small hole 1 and the air holes 9a and 9b.
Then, a lid 8 is attached to the air intake section by means of air blowing means 10.
Air is supplied from above.

An exhaust port 12 provided in the center of the lid 8 communicates the air chamber 1 with the gas combustion chamber 16. Combustion chamber 16
includes a gas passage hole 13 communicating with the exhaust port 12;
An ignition heater 14 and a combustion hole 15 are provided, and combustion air is sent to the combustion hole 15 from a blowing means 10.

The gas passage hole 13 is made of a metal cylinder and has an inner diameter that is one-fourth the wavelength of the microwave, so that the microwave cannot pass through the combustion chamber 16.

A combustion temperature detection unit 1 is provided on the downstream side of the gas combustion chamber 16.
7, catalyst 18 and exhaust hole 19, exhaust dilution section 2
0 is arranged in each case. Also gas combustion chamber 1
A heater 21 is disposed upstream of the combustion hole 15 in the side wall of the fuel cell 6 .

In the above configuration, the container 3 containing the waste G is inserted into the air chamber 1, and the microwave generator 6
Drying is started by oscillating the magnetron, operating the blower 10, and energizing the heater 21.
The 2450 MHz microwave passes through the lid 8 from the waveguide 7 and creates a high electric field in the radio wave resonance space formed by the upper part of the air chamber 1 and the container 3. The radio waves are reflected by the metal wall and most of them are absorbed by the moisture in the waste G, so the waste G is quickly dried. At the same time, the radio wave absorber 4 also begins to absorb radio waves and becomes hotter as the waste material G continues to dry.The radio wave absorber 4's high heat decomposes the waste material G and generates gas.

The gas that is generated from this waste G and accumulates in the container 3 is mostly unburned components, and is extremely heavy with an odor.It may polymerize and have a large molecular weight, but since it is in the form of a mist, it does not absorb into the air. It weighs 5 to 12 times more.

Such heavy gas is conveyed to the gas combustion chamber 16 in the following manner.

The air sent from the blowing means 10 flows into the inner surface of the container 3 through the air hole 9a provided in the lid 8, and into the air chamber 1 through the air hole 9b. In other words, the waste G flows from the inner peripheral part to the center part, merges with the rising air current generated by the waste G being heated by the radio wave absorber 4, and becomes a mixed flow that entrains the heavy gas in the container 3, and then flows through the exhaust hole. 12 into the gas combustion chamber 16 .
On the other hand, the air flowing in from the air hole 9b makes the inside of the air chamber 1 high pressure, flows into the container 3 through the gap formed between the upper edge 3b of the container 3 and the lid 8, and flows into the container 3 through the air hole 9a. The gas combustion chamber 16 with the air flowing in from
flows into.

In this way, the air sent from the blowing means 10 flows into the container 3 from the air intake section provided surrounding the exhaust hole 12 provided in the center of the lid 8, and entrains the gas in the container 3. Since the mixture flows into the gas combustion chamber 16, the upper edge 3b of the container 3 and the lid 8
It is possible to prevent mist-like gas from flowing into spaces where microwaves are difficult to enter, such as the gap formed between the door 2 and the air chamber 1, or the gap formed between the door 2 and the air chamber 1.

Thereby, it is possible to reduce the leakage of odor directly generated from the waste material G and the odor generated secondarily from the mist adhering to the air chamber 1 or between the air chamber 1 and the door 2.

The gas that has flowed into the gas combustion chamber 16 gradually becomes more concentrated and becomes a combustible gas in the ignition heater 14.
ignites and burns.

During this time, the heat of the heater 21 is carried by air and raises the temperature of the catalyst 18 to its activation temperature.
8 can purify the combustion gas.

Further, by detecting the amount of combustion with the combustion temperature detection section 17 and controlling the microwave generator 6, it is possible to suppress an increase in the amount of combustion exceeding the combustion capacity of the gas combustion chamber 16.

The incinerator of the present invention separates easily vaporized components, gasifies them, and burns them.
As the carbonization progresses, the amount of gas generated decreases. This situation can be expressed as changes in the weight of waste G, changes in combustion temperature,
Alternatively, if you visually judge and operate the damper 11 to send a large amount of air to this charred material, ashing combustion will occur. In this case, since the waste G has already lost decomposed gas, it is not overly combusted, and the charred material becomes red hot and can be incinerated.

Further, since the microwave emitted from the microwave generator 6 generates discharge in carbon, the combustion of carbon can be promoted.

Further, since the container 3 is of a double structure in which the container 3 is housed in the air chamber 1, the container 3 as a whole does not get dirty easily due to high temperature, and it is possible to prevent odor from remaining after use.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, air sent from the blowing means enters the container from the air intake section provided surrounding the exhaust hole provided in the center of the lid. The gas in the container is mixed with the gas and flows into the gas combustion chamber, so microwaves are generated between the container and the lid and between the door and the air chamber. It is possible to prevent mist-like gas from flowing into the space where it is difficult to enter.

This makes it possible to reduce the leakage of odorous gases directly generated from waste, and the secondary odors generated from mist adhering to the air chamber or between the air chamber and the door. It is possible to provide a suitable incineration device.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of an incinerator according to an embodiment of the present invention. 1... Air chamber, 2... Door, 3... Waste storage container, 6... Microwave generator, 8... Lid, 9
a, 9b... air hole, 10... ventilation means, 12...
...Exhaust port, 16...Gas combustion chamber, G...Waste.

Claims (1)

[Scope of Claims] 1. A waste storage container that stores waste, an air chamber that removably stores the waste storage container, a door that opens and closes an opening of the air chamber, and a microwave transparent material. a lid that covers above the opening of the waste storage container; an air intake portion formed to surround an exhaust hole provided in the lid; and an air supply means for supplying air to the air intake portion. a microwave generating means for microwave-heating the waste in the waste container; an exhaust hole provided in the lid for discharging gas in the waste container; An incinerator comprising a gas combustion chamber arranged therein and combusting the gas. 2. The incinerator according to claim 1, wherein the waste container is detachably attached to a door that opens and closes the opening of the air chamber, and the opening and closing of the door is linked to the insertion and removal of the waste container.