JPS6317310A - Device for garbage disposal - Google Patents

Abstract

PURPOSE:To provide an energy saving type economical garbage disposal device capable of substantially eliminating an electrical power and to enable a catalyst activating heater to have a small capacity and small size by a method wherein water vapor generated in a main body is removed while being circulated without releasing it to a surrounding atmosphere during a dehydration process for raw garbage. CONSTITUTION:Raw garbage 5 is fed into a processing container 3 through a feeding port 4 of a main body 1, a micro-wave for energizing a magnetron device 6 is generated, a passed within a wave guide 7a and fed into the main body 1 through a supplying port 7 and the micro-wave may act against the raw garbage 5 and an igniter unit 2 to heat the raw garbage. When water vapor is generated from the raw garbage 5, flow-passage changing-over values 20a and 20b are changed over in response to a signal from a humidity sensing device 17 and then a closed circulation path starting from the main body 1 to the discharging port 11 passage changing-over valve 20a humidity removing device 22 circulation path 21 flow path changing-over valve 20b air feeding device 10 air feeding port 9 an interior of the main body 1 is formed, the air within the main body containing much amount of wet air is dehydrated and dried by the humidity removing device 22, returned again into the main body 1 and then the raw garbage 5 is dehydrated continuously. Odor or smoke generated when the dehydration is performed is not leaked out of the device and so a purification process in not required.

Description

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

2. Description of the Related Art Conventionally, this type of kitchen waste processing apparatus has been constructed as shown in FIG. That is, a garbage processing container 3 equipped with an igniter 2 that generates heat using microwaves is placed inside a main body 1 which is a microwave resonator, and an opening 4 provided in the main body 1 is placed in the processing container 3. Six pieces of raw garbage were being thrown in. This garbage 6 is heated and dehydrated by microwaves introduced into the main body 1 from the microwave generator 6 via the supply 07. When dehydration is complete, the temperature of the garbage exceeds the boiling point and the temperature of the garbage stops, and it becomes smoldering and begins to generate unburned HC. Then, it is ignited by the igniter 2, which generates heat by microwaves and is in a red-hot state, and is incinerated to reduce its amount to ash. The air necessary for combustion undergoes heat exchange with exhaust gas in a heat exchanger 8, is heated, and is introduced through an air supply port 9 by an air supply blower 1o. The exhaust gas flows into the heat exchanger 8 through the exhaust port 11, exchanges heat with the supply air, is cooled, and a large amount of water contained in the exhaust gas is condensed and removed. Condensed water passes through a drain pipe 12 and collects in a drain pot 13. The reason why moisture in the exhaust gas is removed is because moisture has an adverse effect on the catalyst activity in the subsequent process, reducing the exhaust gas purification function. The dry exhaust gas was purified by a catalyst body 14 which had been heated and activated by a heater before being exhausted.

Problems to be Solved by the Invention In such a conventional configuration, the exhaust gas is constantly exhausted during operation, so during the dehydration process of garbage that generates little unburned RC etc. (over 80 times the microwave processing time). Even if the amount of time required for dehydration is long, a heater for catalytic activation is used to completely purify odors and small amounts of smoke. ), and since it is cooled to remove moisture using a heat exchanger, additional electricity is required for reheating, which poses problems from the point of view of effective use of heat or energy.

The present invention solves these problems, and aims to provide an energy-saving and economical kitchen waste processing device that does not require electricity to be applied to the heater for activating the catalyst during the dehydration process of food waste. That is.

Means for Solving the Problem In order to solve this problem, the kitchen waste processing apparatus of the present invention has an air supply port and an exhaust port provided in the main body which is a microwave resonator, and an exhaust gas flow path connected to the exhaust port. A tenth flow path switching device is provided in which a medium is provided and an air supply device is provided for supplying air into the main body through a fat air flow path connected to the air supply port, and the air supply device is provided in the exhaust gas flow path from the exhaust port to the catalyst body. A moisture removal device is provided in a circulation flow path whose one end is connected to the valve and the other end is connected to a second flow path switching valve provided in the fat gas flow path, and when moisture is contained in the exhaust gas, a moisture removal device is provided. The flow path switching valve connects the exhaust gas flow path and the circulation flow path to the air supply port, and when the exhaust gas no longer contains moisture, the first flow path switching valve is moved to the catalyst body side, and the second flow path is connected to the catalyst body side. The configuration is such that the flow path switching valve connects the fat air flow path and the air supply port.

Function: During the initial dehydration of garbage by radiating microwaves with this configuration, the humid exhaust gas is passed from the exhaust port of the main unit to the circulation flow path through the first flow path switching valve provided in the exhaust gas flow path. The air flows inside, is dehydrated and dried by a moisture removal device, reaches the air flow path supplied from the second flow path switching valve at the other end, and is circulated in a closed flow path that flows into the main body from the air supply port by the air supply device. Repeatedly dehydrating the garbage. When the dehydration of the garbage is completed, the two flow path switching valves are switched, and the exhaust gas containing unburned HC is purified into carbon dioxide and water by the catalyst, and then exhausted. The air supply is sent into the main body by an air supply device.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. Note that parts that are the same as those in the conventional configuration are given the same numbers, and detailed explanation thereof will be omitted.

In the figure, a main body 1 as a microwave resonator is provided within an outer shell 16, and a garbage processing container 3 equipped with an igniter 2 that generates heat using microwaves is placed at the inner bottom of the main body 1. There is. Then, a door 16 attached to one side of the main body 1 so as to be openable and closable is opened, and 5 ft of raw garbage is put into the processing container 3 through the input port 4. Further, a supply lower is opened on the top surface of the main body 1, and a magnetron device 6 is provided at the back of a waveguide 7a connected to the supply lower. 6a is a blower that cools the magnetron device 6. There is an air supply port 9 on the other side of the main body 1. An exhaust port 11 and a humidity detection device 17 are provided. A catalyst body 14 for purifying exhaust gas and a heat exchanger 8 are provided in an exhaust gas flow path 18 connected to the exhaust port 11, and an air supply device 1o is installed in a fat air flow path 19 connecting the heat exchanger 8 and the air supply port 9. It is set up. In addition, a first flow path switching valve 20 a f is provided in the exhaust gas flow path 18 leading from the exhaust port 11 to the catalyst body 14 , and a second flow path is provided in the fat gas flow path 19 leading from the heat exchanger 8 to the air supply device 10 . A switching valve 26 is provided. A moisture removal device 22 is provided in the circulation channel 21, which has one end connected to the channel switching valve 20a and the other end connected to the channel switching valve 20b.

The moisture removal device 22 of this embodiment is a waste gas containing a large amount of moisture. It has a structure that condenses and removes water by spraying it on the water surface.
The condensed water.

It overflows and accumulates in the drain pipe 12 and drain pot 13. The drain bot 13 has a removable structure and can be thrown away when the water is full.

Note that each opening of the main body 1, except for the microwave supply port 6, is provided with means for preventing leakage of radio waves.

In the above configuration, the raw garbage 6 is charged into the processing container 3 through the input port 4 of the main body 1. When the magnetron device 6 is energized, microwaves are generated and introduced into the main body 1 from the supply lower through the waveguide 7a. The microwave acts on the garbage 5 and the igniter 2 to heat them. As the heating by the microwave progresses, the garbage 5 is initially heated to the boiling point of water and is gradually dehydrated. When the dehydration is completed, the temperature of the garbage 6 rises above the boiling point, becomes smoldering, and begins to generate unburned HC. Then, the igniter 2, which generates heat due to microwaves and is in a red-hot state, quickly ignites it and burns it into ash. On the other hand, for such processing inside the main body 1, the supply/exhaust flow path system operates as follows.

That is, when water vapor is generated from the garbage 6, a signal from the humidity detection device 17 causes the flow path switching valves 20a, 2
0b is switched as shown in FIG. valve 2
0b → Air supply device 1° → Greasy air flow path 19 → Air supply port 9 → Main body 1
Completely forms a closed circulation path that flows inward. Therefore, the air inside the main body 1 containing a large amount of moisture is dehydrated and dried by the moisture removal device 22 and returned to the main body 1 again, and the circulation is repeated, and as a result, the garbage 5 is rapidly dehydrated. At this time, the flow path forms a closed space, so the smell and slight smoke generated during the dehydration process will not leak outside.
No need for purification.

Therefore, there is no need to energize the catalyst heater, resulting in a significant reduction in power consumption. Furthermore, unlike the conventional example, since all moisture is not removed by constantly exchanging heat, energy loss is also reduced. When the dehydration process is finished, smoke is generated and the combustion begins, but according to the signal from the humidity detection device 17, the flow path switching valve 20 & .
20b is switched as shown in FIG. 2, and the heater for catalyst activation is energized. Therefore, the exhaust gas containing odor and smoke is purified into water and carbon dioxide gas by the catalyst body 14 and sent to the heat exchanger 8. It then exchanges heat with the supply air, cools it, and releases it to the outside air. On the other hand, the supply air heated by the heat exchanger is supplied into the main body 1 by the air supply device 1o to continue combustion more efficiently, but compared to the conventional example, the heat from the catalyst body 14 is also This has the effect of making it possible to use energy more effectively. Note that the method of this embodiment can remove moisture contained in the exhaust gas and prevent a decrease in the activity of the catalyst body 14, so it can reduce the odor of the exhaust gas released to the outside air, just like the conventional method. However, since dehydration can be performed repeatedly, it is possible to perform extremely high dehydration processing, and as a result, the heater for activating the catalyst can be designed assuming dry gas with almost no moisture, making it possible to It also has the effect of increasing capacity and downsizing. The air supply device 1o also includes an air supply port 9 and a second flow path switching valve 2o.
b, but the present invention is not limited thereto; for example, it may be provided between the exhaust port 11 and the first Himeji switching valve 20a. Further, the moisture removal device 22 is configured to spray onto the water surface to condense and remove moisture, but any device may be used as long as it can remove moisture.

Effects of the Invention As described above, according to the present invention, during the dehydration treatment of garbage,
The structure removes the boiling water generated inside the main body while circulating it without exposing it to the outside air, which significantly reduces the power consumption compared to the conventional structure in which the catalyst had to be activated even during the dehydration process. In addition, an energy-saving and economical kitchen waste processing apparatus can be obtained in which the heater for activating the catalyst can be made smaller in capacity and smaller in size.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing a kitchen waste processing apparatus according to an embodiment of the present invention during garbage dehydration processing, FIG. 2 is a longitudinal cross-sectional view of the same kitchen waste processing apparatus during combustion processing, and FIG. It is a longitudinal cross-sectional view showing a kitchen waste processing device. 1...Body, 2...Igniter, 3...
・Processing container, 6...Microwave generator, 7.
...Supply port, 8...Heat exchanger, 9...
...Air supply port, 1o...Air supply device, 11...
...Exhaust port, 2o...Flow path switching valve, 22.
...Moisture removal device. Name of agent: Patent attorney Toshio Nakao and one other person i-
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Claims (1)

[Claims] A main body configured as a microwave resonator that houses a processing container for kitchen waste, an air supply port and an exhaust port provided in the main body, a catalyst body provided in an exhaust gas flow path connected to the exhaust port, and the air supply port. an air supply device for supplying air from an opening into the main body through an air supply flow path, one end of which is connected to a first flow path switching valve provided in an exhaust gas flow path leading from the main body to the catalyst body; A moisture removal device is provided in a circulation flow path connected to a second flow path switching valve provided in the air supply flow path, and when moisture is contained in the exhaust gas, the flow path switching valve is switched and the exhaust gas flow is changed. When the exhaust gas no longer contains moisture, the first flow switching valve is connected to the catalyst body side, and the second flow switching valve is connected to the fat air flow channel. A kitchen waste processing device configured to communicate with an air supply port.