JPH04327705A - Waste disposal device - Google Patents

Abstract

PURPOSE:To present a waste disposal device which disposes of raw refuse, etc., as its object, reduces the waste weight very much, heats and dries wastes uniformly, treats them cleanly, and provides healthy handling after the disposal. CONSTITUTION:A waste charging door 1 that can be tightly closed, waste disposal chamber 3, waste receiving bag 5, and microwave heater 6 for heating wastes arc provided, and outside the above mentioned waste disposal chamber 3 a heat recovery chamber 8 and blower 10 that supplies air to the heat recovery chamber 8 are provided and, at the same time, the above mentioned microwave heater 6 and the blower 10 are operated alternately.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste processing apparatus for processing waste such as food waste, paper waste, and plastic waste.

0002

2. Description of the Related Art Conventionally, waste treatment equipment includes a mechanical treatment device called a disposer and an incineration type treatment device that uses gas fuel, liquid fuel, or the like. Mechanical processing equipment uses rotating blades to crush food waste and disposes of it into sewers, while incineration processing equipment uses a burner to combust fuel and use the heat to incinerate the food waste. In addition to these, there are waste treatment apparatuses that are equipped with a magnetron and heat garbage using microwaves to incinerate it.

0003

However, such conventional waste treatment apparatuses have the following problems. Mechanical processing equipment can crush food waste into fine particles, but the wastewater after pulverization contains a large amount of solids, which can clog sewer lines, which has become a major social problem. . Incineration type processing equipment has the disadvantage that the entire equipment is complex and large. Furthermore, although waste treatment equipment equipped with a magnetron does not have the disadvantages of the aforementioned sewerage problems or being complicated and large, it also has poor exhaust gas characteristics during treatment (not sufficient for household use) and Problems remain, such as the contained moisture condensing after being discharged and contaminating indoor and outdoor areas. Furthermore, even waste processing equipment equipped with magnetrons, which is effective for processing raw garbage, has poor thermal efficiency as the equipment because the heat during processing is discarded to the outside together with the exhaust gas. In addition, since microwaves are selectively absorbed by moisture, it is difficult to uniformly heat and dry waste with microwaves alone, and tar-like substances come from inside the waste and reach the surface during heating. Sometimes it stuck. Furthermore, when taking out waste after treatment,
Hands tend to get dirty, which is unhygienic, and dirt tends to adhere to the inner walls of containers that store waste.

[0004] The present invention greatly reduces the weight of waste, uniformly heats and dries the waste, allows waste to be treated cleanly, handles the waste after treatment in a sanitary manner, and has excellent drainage performance. The present invention provides a waste treatment device that provides a waste treatment system.

[0005]

[Means for Solving the Problems] In order to solve the above problems, the present invention includes a sealable waste input port, a waste treatment chamber, a waste storage container, and a heating method for heating the waste in the waste storage container. A microwave heater, a drain provided in the waste treatment chamber, a heat recovery chamber provided outside the waste treatment chamber, a blower for supplying air to the heat recovery chamber, an air supply pipe, and a heat recovery The waste treatment apparatus is provided with a hot air inflow path that causes hot air heated in the room to flow into the waste treatment chamber, and which alternately operates a microwave heater and a blower.

[0006]

[Operation] With the above structure, after waste is inputted from the waste input port, it is stored in the waste storage container in the waste treatment chamber. After the waste is input, seal the waste input port and
Turn on the microwave heater. The microwave begins to heat the waste in the waste storage container. In particular, the microwaves are selectively absorbed by the moisture in the waste, and as water vapor is generated, the waste dries. Water vapor condenses on the inner walls of the waste treatment chamber and is discharged to the outside through the drain port. After operating the microwave heater for a predetermined period of time, the microwave heater is stopped. Immediately after that, air is supplied from the blower to the heat recovery chamber, the heat radiation from the waste treatment chamber is recovered in the heat recovery chamber, and the heated air is made to flow into the waste treatment chamber through the hot air inflow path. During this time, the microwave heater is stopped, so the waste can be heated and dried without inputting any heat input. Next, after operating the blower for a predetermined period of time, the blower is stopped. Immediately thereafter, turn on the microwave heater again. Thereafter, in the same way, the microwave heater and the blower are operated alternately to heat the waste.
dry. Since the microwave heats and dries the waste from inside the waste and the hot air heats and dries the waste from the outside, the waste can be dried uniformly.

[0007]

[Embodiment] A specific explanation will be given below using the drawings.

FIG. 1 is a sectional view showing a first embodiment of the present invention. In FIG. 1, the waste treatment apparatus includes a waste inlet 1, and the waste inlet 1 is provided with a waste inlet cover 2 so as to be openable and closable. Waste input lid 2
It has excellent heat resistance and is highly airtight to prevent microwaves and odors from leaking. A waste storage bag 5 for storing waste 4 is provided inside the waste treatment chamber 3. The waste storage bag 5 is made of a microwave transparent material and is easy to handle, but as a waste storage container,
used. A microwave heater 6 is provided to heat the waste 4 in the waste storage bag 5, and a drain port 7 is provided at the bottom of the waste treatment chamber 3. The lower surface of the waste treatment chamber 3 is formed into a hemispherical shape so that the drain port 7 is located at the lowest part of the waste treatment chamber 3.

In FIG. 1, the bottom surface is hemispherical, but the shape does not need to be limited as long as the drain port 7 can be located at the lowest part of the waste treatment chamber 3. A heat recovery chamber 8 is provided outside the waste treatment chamber 3, and a blower 10 for sending air 9 into the heat recovery chamber 8 is housed in an air supply chamber 11. The heat recovery chamber 8 is connected by an air supply pipe 12. A warm air inflow hole 14 is provided in the wall of the waste treatment chamber 3 through which hot air 13 heated in the heat recovery chamber 8 flows into the waste treatment chamber 3. The hot air inflow hole 14 is a hot air inflow path, and a check valve 15 is provided in the hot air inflow hole 14 to prevent backflow.

Next, the operation will be explained. In FIG. 1, waste 4 input from a waste input port 1 is stored in a waste storage bag 5 in a waste treatment chamber 3. After confirming that the waste input port 1 is sealed, the microwave heater 6 is activated. Microwave waste storage bag 5
Start heating the waste 4 inside. In particular, the microwaves are selectively absorbed by the moisture in the waste 4, and as water vapor 16 is generated, the waste 4 dries. The generated water vapor 16 moves to the upper part, but since the waste inlet 1 is sealed, the water vapor 16 moves to the lower part of the waste treatment chamber 3. At this time, the water vapor 16 comes into contact with the inner wall of the waste treatment chamber 3, condenses, becomes condensed water 17, and is discharged to the outside from the drain port 7 provided at the lower part of the waste treatment chamber 3. Most of the water vapor 16 is discharged from the drain port 7 after condensation, but a portion is discharged from the drain port 7 in the state of water vapor 15. Since microwave heating can be performed without accumulating water vapor 16 or condensed water 17 in the waste treatment chamber 3, drying of the waste 4 can be accelerated. After operating the microwave heater 6 for a predetermined period of time, the microwave heater 6 is stopped. Immediately after that, air 9 is sent from the blower 10 to the heat recovery chamber 8, and the heat radiated from the waste treatment chamber 3 is recovered in the heat recovery chamber 8, and the air is passed through the hot air inflow hole 14 and the check valve 15 as hot air 13. , and flow into the waste treatment chamber 3. During this time, since the microwave heater 6 is stopped, the waste material 4 can be heated and dried without inputting any heat input. Since microwaves are selectively absorbed with respect to moisture, continuous use of the microwave heater 6 locally overheats the waste 4, generating tar-like substances or causing ignition. The microwave generates warm air 13 from inside the waste 4.
Since the waste 4 is heated and dried from the outside, the microwave is not continuously irradiated, the microwave is stopped before a tar-like substance is generated, and the heating means is replaced with warm air 13.
By switching to , uniform drying of the waste material 4 becomes possible. Next, after operating the blower 10 for a predetermined time, the blower 10
Immediately thereafter, the microwave heater 6 is started again. Since microwaves are not irradiated while the blower 10 is operating, the temperature of the hot air 13 decreases over time. Therefore, if the hot air 13 can dry the waste material 4 to the point where no moisture adheres to its surface, then once again,
Just irradiate it with microwaves. Thereafter, in the same manner, the microwave heater 6 and the blower 10 are operated alternately to heat and dry the waste 4. Heating and drying using only microwaves will cause tar-like substances to adhere to the surface of the waste 4, but by alternately using microwaves and hot air 13, generation of tar-like substances can be suppressed. The waste material 4 can be dried uniformly. Furthermore, when the microwave heater 6 is stopped and the blower 10 is operated, the device can heat and dry the waste 4 without inputting any heat input, thereby saving energy. becomes possible.

Input of microwave heater 6 and blower 10
By varying at least one of the inputs of
Energy saving and uniform drying of the waste 4 can be achieved. By using the check valve 15, it is possible to easily prevent the water vapor 16 generated from the waste 4 from flowing back from the waste treatment chamber 3 to the outside during microwave heating.
If backflow can be prevented by adjusting the pressure loss, there is no particular need to provide the check valve 15. After the processing is completed, the entire waste storage bag 5 containing the waste 4 is taken out, so there is no need to touch the waste 4, which is sanitary. waste 4
Since the microwave heating treatment is performed while the waste is stored in the waste storage bag 5, dirt does not adhere to the inner wall of the waste treatment chamber 3.

[0012] Furthermore, by forming the waste storage bag 5 with paper, breathability can be increased, so that the water vapor 16 generated from the waste 4 due to microwave heating is blocked by the waste storage bag 5. It is efficiently discharged outside. By using paper, the waste storage bag 5 can be easily handled after the treatment is completed.

Next, a sectional view of the second embodiment is shown in FIG. In FIG. 2, a heat recovery chamber 8 is located above the waste treatment chamber 3.
The hot air chamber 18 is provided with a hot air chamber 18 into which hot air 13 whose temperature has been raised is sent, and a heater 19 is provided within the hot air chamber 18. A hot air inflow hole 14 is provided between the heat recovery chamber 8 and the hot air chamber 18, and a check valve 15 is provided in the hot air inflow hole 14. Further, the inner wall of the waste treatment chamber 3 and the inner wall of the hot air chamber 18 are insulated with a heat insulating material 20. In Figure 2, waste treatment room 3
Although both the hot air chamber 18 and the hot air chamber 18 are insulated, it is sufficient to insulate at least one of them.

In FIG. 2, the method of heating the waste material 4 alternately by microwaves and hot air 13 is the same as in the first embodiment, but in the second embodiment, the heat recovery chamber is heated from the blower 10. The air 9 sent into the chamber 8 is heated by recovering residual heat from the microwave, becomes hot air 13, moves upward, passes through the hot air inlet 14 and the check valve 15, and enters the hot air chamber 18.
is flowing into the country.

In the second embodiment, unlike the first embodiment, the temperature of the hot air 13 is raised by a heater 19 in the hot air chamber 18, and the temperature of the hot air 13 is increased by a waste treatment chamber located below the hot air chamber 18. Sent to 3. Since the hot air 13 can be brought into direct contact with the waste 4 from above the waste storage bag 5, the waste 4
Improves heat transfer properties to. In the second embodiment, since the temperature of the hot air 13 is raised by the heater 19, the waste material 4 can be effectively heated and dried even without irradiation with microwaves. In particular, by varying the input value of the heater 19, the temperature of the hot air 13 can be controlled, making it possible to carry out drying processes for various types of waste 4.

[0016] Furthermore, the inner wall of the waste treatment chamber 3 and the hot air chamber 18
By insulating the inner wall of the device with the heat insulating material 20, it is possible to suppress heat radiation to the outside and improve the thermal efficiency of the device.

[0017]

[Effects of the Invention] As explained above, according to the waste treatment apparatus of the present invention, the following effects can be obtained.

[0018] First, water vapor generated from waste is condensed on the inner wall of the waste treatment chamber by heating and drying with microwaves, and is discharged to the outside from a drain port provided at the bottom of the waste treatment chamber. Since microwave heating can be performed without accumulating steam or condensed water in the waste treatment chamber, drying of waste can be accelerated. In addition, instead of continuously irradiating microwaves, the microwaves are stopped before tar-like substances are generated and the heating means is switched to warm air, which prevents local overheating of the waste. uniform drying is possible. Stop the microwave heater,
When the blower is in operation, the device can heat and dry the waste without inputting any heat input, so it is possible to save energy. In this way, by alternately using microwaves and hot air, generation of tar-like substances can be suppressed and waste can be uniformly dried. After the processing is completed, the entire waste storage bag containing the waste is taken out, so there is no need to touch the waste, which is sanitary. Since the microwave heating treatment is performed while the waste is stored in the waste storage bag, dirt such as tar will not adhere to the inner wall of the waste treatment chamber.

[Brief explanation of drawings]

FIG. 1: Cross-sectional view of a waste treatment device in a first embodiment of the present invention.

[Figure 2] Cross-sectional view of the waste treatment device in the second embodiment

[Explanation of symbols]

1 Waste input port 3 Waste treatment room 5 Waste storage bag 6　Microwave heater 7 Drain port 8 Heat recovery room 10　Blower 14 Hot air inflow hole 15 Check valve 18 Warm air room 19 Heater

Claims (7)

[Claims] Claim 1: A sealable waste input port, a waste treatment chamber, a waste storage container, a microwave heater for heating waste in the waste storage container, and a waste treatment chamber. A heat recovery chamber is provided outside the waste treatment chamber, a blower for supplying air to the heat recovery chamber, an air supply pipe, and a hot air heated in the heat recovery chamber. A waste treatment apparatus comprising: a hot air inflow path for flowing into the waste treatment chamber, and alternately operating the microwave heater and the blower. 2. The waste treatment apparatus according to claim 1, wherein at least one of the input of the microwave heater and the input of the blower is variable. 3. A sealable waste input port, a waste treatment chamber, a waste storage container, a microwave heater for heating waste in the waste storage container, and a waste treatment chamber. a heat recovery chamber is provided outside the waste treatment chamber; a blower for supplying air to the heat recovery chamber; an air supply pipe; a hot air chamber into which hot air heated in the heat recovery chamber flows; a hot air inflow path is provided between the heat recovery chamber and the hot air chamber; a heater is installed in the hot air chamber; A waste treatment apparatus characterized in that a microwave heater and the blower are operated alternately, and the heater is operated together with the blower. 4. The waste treatment apparatus according to claim 3, wherein at least one of the input to the microwave heater, the input to the blower, and the input to the heater is made variable. 5. The waste treatment apparatus according to claim 1, wherein the waste storage container is formed of a waste storage bag made of a microwave transparent material. 6. The waste treatment apparatus according to claim 1 or 3, wherein a check valve is provided in the hot air inflow path. Claim 7: Claim 1 characterized in that at least one of the inner wall of the waste treatment chamber or the inner wall of the hot air chamber is insulated.
, or the waste treatment device according to claim 3.