JPH0210343B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a kitchen waste processing apparatus for reducing the amount of food waste by incinerating it using microwaves.

BACKGROUND ART Conventionally, this type of kitchen waste processing apparatus has had a configuration as shown in FIG. That is, a heat-generating container 2 that generates heat by microwaves is placed inside a main body 1 which is a microwave resonator, and garbage 3 is put into the heat-generating container 2 through an opening 10 provided in the main body. This garbage 3 is heated by microwaves introduced into the main body 1 from a microwave generator 4 through a supply port 5. Then, this garbage 3 is incinerated to reduce its weight by using the heat generated by its own internal heating and the heat from the heat generating container 2. Air necessary for combustion was introduced through an air supply port 6 by a supply air blower 7, and exhaust gas was exhausted through an exhaust port 8 by an exhaust blower 9.

Problems to be Solved by the Invention In such a conventional configuration, when trying to increase the output of the microwave generator 4 to speed up the processing,
The food waste 3 is rapidly heated, and relatively thick smoke and odor are generated from the time the food waste is dehydrated until it ignites. This is a smoldering state until it ignites and burns, and CO, HC, etc. are present in the exhaust gas, and if left unburned, the tar-like unburned hydrocarbons in the exhaust gas will adhere to the main body and flue, seriously staining the interior and causing eye damage. There was a problem that it caused visible smoke and pungent odor.

The present invention solves these problems,
The object of the present invention is to provide a kitchen waste disposal device that facilitates the purification of exhaust gas and the repair and maintenance of an aircraft body by promoting the ignition of thick smoke that is in a smoldering state before ignition.

Means for Solving the Problem In order to solve this problem, the kitchen waste processing device of the present invention includes a main body that is a microwave resonator, a supply port that introduces microwaves into the main body, and a microwave resonator that generates microwaves. A microwave generating device, a heat generating container placed in the main body and generating heat by microwaves, an air supply port for introducing air into the main body, and an exhaust port for discharging gas in the main body, The main body is equipped with an igniter that generates heat using microwaves.

Effect: With this configuration, food waste is directly internally heated by microwaves and doubly heated by heat from the heating container that generates heat by microwaves, thereby dehydrating the food waste. It then begins to smolder, producing relatively thick smoke and odor, but the igniter, which is heated by microwaves and becomes red-hot, quickly ignites and self-combusts, producing almost no smoke or odor. .

Embodiment Hereinafter, an embodiment of the present invention will be described based on FIG. In the figure, a magnetron device 12 which is a microwave generator for introducing microwaves into a main body 11 which is a microwave resonator is provided.
Then, the microwave passes through the waveguide 13 and is introduced into the main body 11 from the supply port 14 . The air supply blower 15 cools the magnetron device 12 and allows air to flow into the main body 11 through the air supply port 16 . Further, inside the main body 11, a heat generating container 17 is placed which is made of a sintered body of silicon carbide and barium titanate and has a heat resistance of 1000° C. or higher. This heat generating container 17
Garbage 18 is thrown in through the opening 19 of the main body 11. An igniter 20 made of a sintered body of silicon carbide and barium titanate is placed on top of the garbage 18. The dielectric loss of the material of the igniter 20 is set to be at least larger than the dielectric loss of the material of the heat generating container 17, and the exhaust gas generated by the microwave is exhausted from the exhaust port 21 through the flue by the exhaust blower 22. It should be noted that each opening of the main body 11 is provided with means for preventing radio wave leakage, except for the microwave supply port 14.

In the above configuration, the food waste 18 is stored in the heat generating container 17.
It is placed inside the main body 11 through the opening 19. When the magnetron device 12 is energized, microwaves are generated and introduced into the main body 11 through the supply port 14 through the waveguide 13. The microwave acts directly on the garbage 18 and instantaneously heats the garbage 18 to the inside, which has a high water content and low thermal conductivity and is difficult to heat externally because there are many spaces between the garbage. At the same time, it also acts on the heat generating container 17. The heating container 17 is made of a sintered body of silicon carbide and barium titanate, which is a ferroelectric material. Therefore, heat equivalent to the dielectric loss of barium titanate is generated, and the entire heat generating container 17 is heated by silicon carbide having good thermal conductivity. As a result, the garbage 18 is heated doubly by the heat generated by the internal heating and the heat from the heat generating container 17, and is initially heated to the boiling point of water and gradually dehydrated. Once dehydration is complete, the temperature rises above the boiling point, and eventually it becomes smoldering, producing thick smoke and odor. The main components generated are CO, HC, and unburned hydrocarbons in the form of tar. On the other hand, microwaves also act on the igniter 20, and because the dielectric loss of the material is larger than other materials, and because it is small in weight and has a rod shape with a length that allows microwaves to easily pass through, the igniter 20 can be heated to a red-hot state. It's warm. For this reason, the igniter 10 in the red-hot state ignites the unburned gas generated at the beginning of the smoldering state,
It quickly turns into a flaming combustion. When combustion shifts to flame-raising, CO, HC, and unburned hydrocarbons are oxidized and converted to water or carbon dioxide, and odor components are almost completely decomposed, resulting in almost no smoke or odor. Then, the garbage 18 continues to self-combust while being heated by microwaves, and is almost completely burned, leaving only a small amount of white ash. The air required for combustion is provided by a supply air blower 15.
The exhaust gas flows into the air supply port 16, and the exhaust gas flows through the exhaust port 21.
The air is then exhausted through a flue by an exhaust blower 22. Furthermore, even when the food waste 18 becomes ash and no longer absorbs microwaves, the heating container 17 and the igniter 20 remain as a load and absorb the microwaves, so the microwaves return to the magnetron device 12 and cause so-called dry cooking. It will not be damaged in any condition. Furthermore, although barium titanate was used as the material for microwave heating, any ferroelectric material with heat resistance may be used. In addition, although the igniter was made in the shape of a rod, the key point is that any shape that allows microwaves to easily pass through the igniter will suffice, and the combustion body is made of ceramic for durability, but for temporary use, a metal igniter may be used. It may be something.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, the thick smoke immediately before ignition of garbage is ignited early by the igniter, thereby purifying the exhaust gas caused by combustion and reducing air pollution. In addition to preventing
This prevents contamination within the main body, simplifies repair and maintenance of the main body, and extends the life of the main body.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of a kitchen waste processing apparatus according to an embodiment of the present invention, and FIG. 2 is a vertical cross-sectional view showing a conventional kitchen waste processing apparatus. 11... Main body, 12... Magnetron device, 1
4... Supply port, 16... Air supply port, 17... Heat generating container, 19... Opening, 20... Igniter, 21...
exhaust port.

Claims (1)

[Scope of Claims] 1. A main body as a microwave resonator, a supply port for introducing microwaves into the main body, a microwave generator for generating microwaves, and a microwave generator placed in the main body for generating heat by the microwaves. A kitchen waste disposal device comprising: a heat generating container for generating heat, an air supply port for causing air to flow into the main body, and an exhaust port for discharging gas from the main body, and an igniter for generating heat by microwaves disposed within the main body. 2. A claim in which a heat-generating container and an igniter that generate heat by microwaves are made of a sintered body of barium titanate and silicon carbide, and the dielectric loss of the igniter material is at least greater than the dielectric loss of the heat-generating container material. The kitchen waste processing device according to item 1.