JPH04100581A - Garbage disposal device - Google Patents

Abstract

PURPOSE:To reduce the weight of garbage to about 1/5 that before treatment so as to lighten workload for disposal thereof by providing a time zone in which a hot air is mainly applied to the garbage from a hot air blower at least in the final stage of the treatment. CONSTITUTION:The garbage from a kitchen is placed into a bag 6 set in a container 1. A microwave generator 3 is operated to start the heating of the garbage. The garbage in the bag is irradiated with the microwaves thus generated through a window 4 and heated from inside with its temp. rising slowly. At the same time, the water evaporates vigorously from the garbage. The temp. of the garbage at this point of the vigorous water evaporation is raised very close to the boiling point of the water. An air blower 9 is operated and a heater 10 is energized to act as a hot air generating device, whereby the garbage can be treated by the two heating means including the microwave heating. In the final stage of the heat treatment, the air blower 9 and the heater 10 are operated together without fail for a predetermined time to subject the garbage to a hot air drying, thus completing the whole treatment.

Description

[Detailed Description of the Invention] Industrial Application Fields of the Invention (1) Food waste such as so-called food waste generated in the kitchen and containing a relatively large amount of moisture, medical waste, and biological waste such as animal carcasses are heated. Conventional technology in general A typical example of biological waste is food waste discharged from households every day, and it accounts for the majority of food waste. This is kitchen waste generated from around the kitchen.The most common way to dispose of this kitchen waste is to have a collection truck go to a predetermined location at a predetermined time to collect the waste, and centrally process it at a processing facility such as an incinerator. Therefore, in households, it is necessary to store kitchen waste until a designated time for collection, and it is also necessary to transport it to a designated place for collection. In order to do this, several proposals have been made as methods for disposing kitchen waste where it is generated.The representative one is called a disposer, which uses mechanical force to atomize kitchen waste and dispose of it together with water. (In Japan, due to lack of sewage treatment equipment capacity, etc., its use is often prohibited at the local government level to avoid organic matter pollution in rivers.) Also, as another method,
Several proposals have been made, including a method of freezing that does not emit odors.However, there are still very few in use, and it has not yet been put into practical use. Biological disposal methods, such as medical disposal methods.Disposal of pet and other animal carcasses is usually outsourced to specialized companies.Special measures are required for the disposal itself or for strict storage until then.Considerately expensive. In addition, the biological wastes mentioned above have a high moisture content, which can easily create an environment in which spoilage can occur (therefore, it is possible to separate and dry the moisture and pre-preserve the waste). Alternatively, it is effective to heat sterilize waste that has progressed to a certain degree of decomposition, or to prevent further decomposition, or a combination method is effective.Especially with kitchen waste, conventionally, kitchen waste is sterilized until a predetermined time when it is collected. The first major problem is the odor that occurs as kitchen waste decomposes during this time.
In addition, kitchen waste contains a lot of water, which increases its weight.The second major problem is the hard labor of transporting the bags filled with it to the designated collection site. Traces often become the cause of new secondary odors, and there are urgent expectations for a solution to the above problem, especially in apartment complexes. A disposer has the power to crush kitchen waste into fine pieces (the wastewater after treatment contains a large amount of solids and organic components, and it has no effect on spoilage during storage after crushing (℃). In addition, although there are still problems with the incineration method, such as the generation of odors during incineration and the disposal of ash, there are still very few practical waste treatment devices that can deal with these problems, and the issue is whether they can be realized as soon as possible. The present invention solves the above-mentioned problems, and is a waste processing device that can dry waste, make it sanitary through heat sterilization, prevent it from rotting even during storage, and prevent it from generating bad odors. To achieve the above objects, the present invention provides a container for containing waste made of a microwave shielding material, a microwave oscillator for heating the waste, and a hot air generator. The present invention also works by providing a time period in which the waste is mainly heated by hot air from the hot air generator, at least in the final stage of heat treatment. This makes it possible to easily dry waste that contains a lot of moisture, making the waste lighter and allowing it to be stored in a state where it is less likely to rot due to heat sterilization.Moreover, the surface of the waste remains well-dry. Easy to handle and hygienic.
In other words, waste stored in a container is heated from inside by microwaves, which promotes evaporation of water and reduces weight. At this time, the inside of the heated object is difficult to cool down, so moisture often evaporates violently from the inside, and the waste after microwave heating often does not retain its original shape. However, since it is difficult to keep the surface completely dry, some moisture remains on the surface, which creates a feeling of uncleanness. It is almost completely dry, which eliminates the feeling of filth. In this way, the weight of the waste is reduced and sanitary handling is possible.Example: Hereinafter, an example of the present invention will be explained with reference to Fig. 1.As shown in the figure, the main container 1 and the lid 2 are both This is the main part of the container that contains the waste, and microwave shielding material is used to prevent microwaves from leaking outside. The microwave oscillator 3 is attached to the outside of the main container l, and the microwaves from the microwave oscillator 3 are transmitted through a window 4 made of a transparent material and irradiated into the main container l. Here, the window 4 is made of borosilicate glass. is used. The inner container 5 is detachably installed inside the main container 1, and a disposable bag 6 is set inside the inner container 5 along the inner container 5. During the drying operation, the temperature of the waste increases;
It is desirable that the bag 6 has a heat resistance of about 120° C. or higher, such as polypropylene, polyethylene, polyethylene terephthalate, polybutadiene terephthalate,
The drain valve 7 is made of a single material such as paper or a composite material such as a laminated material.
It is opened when cleaning water etc. from cleaning the inside is discharged from the outlet 8.During normal drying operations, the container is kept closed to maintain airtightness inside the container.

The blower 9 and the heater 10 constitute a hot air generator, which is another heating means.
is the exhaust port. To explain the operation in the above configuration, first, set the bag 6 in the inner container 5 and put it in the main container 1. Waste such as kitchen waste generated in the kitchen etc. is set in the main container L. It is placed in a bag 6. When the bag 6 is almost full with waste, the excess water in the main container 1 is discharged from the outlet 8, and the drain valve 7 is closed.The lid 2 is closed and preparations are completed. The generated microwaves are irradiated onto the waste inside through the window 4, and the waste is heated from within, gradually increasing its temperature. At the same time, the evaporation of water in the waste increases. The temperature of the waste during the period of high water evaporation (
The temperature is now close to the boiling point of water.Also, by driving the blower 9 and energizing the heater 10 to operate it as a hot air generator, waste can be heated using two heating means in addition to the microwave. . It is possible to use them together at the same time L. It is also possible to switch them over and use them alternately. If they are used together, the amount of heating will increase, so the processing time will be shortened. In this example, microwaves are used as the main heating device, and the Even if the configuration is such that hot air from a hot air generator can be used as appropriate when there is a large amount of items, the bag 6 does not have air permeability in this embodiment. Waste can be effectively dried using hot air generated by a hot air generator from above. Therefore, in the final stage of heat treatment (Mu), be sure to use the blower 9 for a certain period of time.
Then, the heater 10 is activated to perform hot air drying, and then the process is completed.By doing this, the surface of the waste after the treatment is extremely dry, and the filthiness can be wiped away. After cooling, the lid 2 is opened and the waste is taken out along with the bag 6, and the waste can be disposed of very easily.At this time, the weight of the waste is reduced to about 115 kg before treatment, and the labor required for disposal is reduced. Because it is sterilized at elevated temperature, it is extremely resistant to spoilage and can suppress the generation of odors even when stored as is. Items with the same configuration as in the above embodiment are given the same reference numerals and their explanations are omitted.As shown in the figure, the inner container 14 is mesh-shaped, and a bag 15 made of mesh-shaped polyethylene or the like is set in the inner container 14. L The water in the waste is effectively evaporated. Furthermore, the blower 16
and the heater 17 constitute a hot air generator (the air supply port 18 and one outlet are connected by ventilation passages 20 and 21, and an exhaust passage 23 is provided before reaching the exhaust port 22). .Heat exchange is possible between the ventilation passage 2o and the exhaust passage 23, and the heat in the gas exhausted through the exhaust passage 23 can be recovered into the air supplied from the air supply passage 20. At this point, waste such as kitchen waste is placed in the bag 15 and the drying process is started. First, the microwave heater 3 is activated to heat the waste from inside and promote the evaporation of moisture. At the same time, a hot air generator is used to Hot air outlet 1
Since both the inner container 14 and the bag 15 are breathable, it is effective to use them in combination with hot air drying from below.The moisture in the waste becomes water vapor and is exhausted. The waste is discharged from the port 22 to the outside of the container, and the drying progresses. Microwaves are used as the main heating device, as in the embodiment shown in Figure 1, and hot air is also used as appropriate when the amount of waste is large. It is also possible to do so. Also, in the final stage of processing, even if a method is adopted in which hot air drying is always carried out for a certain period of time and then the process is finished, after cooling, the lid 2 is opened and the waste is taken out along with the bag 15, which makes it extremely easy to dispose of it. As a result, the surface of the waste after treatment is extremely dry, eliminating any sense of filth, and at this time, the weight of the waste is reduced to about 115 mm compared to before treatment. By sterilizing at elevated temperatures, it is extremely difficult to putrefy, and even if stored as is, the generation of odor can be suppressed. According to the document, a container made of a microwave shielding material to contain waste, and a microwave oscillator and a hot air generator are used as heating means. It is now possible to dry and process waste with simple operations, reducing the weight of waste to about 115 kg before processing, reducing the transportation labor required for disposal. The heat sterilization effect enables hygienic handling, and the surface is particularly dry, eliminating any sense of uncleanness.Also, it does not rot easily during storage, and can be disposed of as waste that is unlikely to generate bad odors. It is effective.a

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a main part of a waste treatment apparatus according to an embodiment of the present invention. Fig. 2 is a cross-sectional view of a main part of a waste treatment apparatus according to another embodiment of the present invention. ...Lid 3...Microwave oscillator 9...Air blower a 10...Heater. Name of agent: Patent attorney Shigetaka Awano (1 person)

Claims (2)

[Claims] (1) A container made of a microwave shielding material and containing waste; a microwave oscillator and a hot air generator for heating the waste; A waste treatment device that provides a time slot for generating hot air from the hot air generator. (2) The waste treatment apparatus according to claim 1, wherein a bag for storing waste is detachable in the container.