JPH04332307A - Refuse disposal device - Google Patents

Abstract

PURPOSE:To provide economical power-saving type products which are very excellent in terms of drying efficiency by preventing the heat of heat treatment from being exposed outside in a refuse disposal device which is used for the disposal of garbage. CONSTITUTION:There is installed a condensation section 13 which heats the refuse R housed in a refuse vessel 1 by means of microwaves and cools evaporated steam while the outside of the condensation section 13 forms a wall 21 of a heat exchanger and forcibly cooled by cooling air fed from a fan 17. The cooling air which has received the heat is fed to the refuse vessel 1 where it serves to promote the drying of refuse 8.

Description

[Detailed description of the invention]

0001

FIELD OF INDUSTRIAL APPLICATION The present invention is applied to an apparatus for easily disposing of waste generated in kitchens, hospitals, etc. Garbage is currently disposed of in landfills or incinerated by local governments. Due to a lack of land for landfill, waste disposal has no choice but to rely on incineration, but incineration also poses issues such as hygiene issues during transportation and difficulty in locating an incinerator. The present invention relates to a device that reduces the weight and volume of waste at the place where it is generated, and makes it sanitary, and can solve this problem. The present invention can be used for waste disposal in homes, restaurants, grocery stores, etc.

0002

2. Description of the Related Art Drying or incineration methods are used to hygienically dispose of waste. There are various methods suitable for large-scale equipment, but a method that uses microwaves to dry or burn waste has been proposed as a method suitable for small-sized equipment. This method dries quickly and the waste is sanitary and does not rot. In addition, it is lightweight and easy to dispose of.

0003

However, the conventional method described above has the problem of requiring a large amount of electric power to dry the waste because the latent heat of vaporization of water is large. On the other hand, after the water vapor evaporated from the garbage is condensed, the water is discharged to the outside while retaining the heat of condensation, and the heat is not used effectively.

The garbage disposal device of the present invention solves the above problem, and by reusing the heat generated when condensing water vapor generated from garbage for drying garbage, it improves drying efficiency and consumes less power. The aim is to create a garbage disposal device that can dry garbage.

[0005]

[Means for Solving the Problems] As a first means of the present invention to achieve the above object, a condensing section is provided for forcibly cooling water vapor generated from garbage by heating with cooling air, and the condensing section It is equipped with a heat exchange wall that transfers the generated condensation heat and the latent heat of condensed water to the cooling air, and a blower for flowing the cooling air.

Furthermore, as a second means, when the cooling air passes through the heat exchange wall, it flows in the opposite direction to the direction in which the condensed water flows down, and is exhausted after passing through the waste container.

Furthermore, as a third means, microwaves are used and the outputs of the microwave heating means and the blower are alternately increased and decreased.

[0008]

[Operation] The operation of the present invention in the above configuration will be explained below.

[0009] Water vapor is generated by heating waste containing a large amount of moisture. Water vapor condenses in its surroundings, releasing heat of condensation and becoming condensed water.

[0010] This condensed water flows down and is discharged to the outside from the exhaust port, but a blower sends air in a direction opposite to the direction in which this condensed water flows down, and receives condensation heat and latent heat through a heat exchange wall. Hot air is pumped into the waste to accelerate drying.

[0011]Furthermore, since the output of the blower is weakened when heating is performed using microwaves, the inside of the waste container reaches a sufficiently high temperature and moisture evaporates actively.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention described in item 1 will be described below with reference to the accompanying drawings. In FIG. 1, 1 is a garbage container made of a microwave transparent material such as plastic, ceramic, glass, or paper. The garbage container 1 may be bag-shaped or cup-shaped and has a plurality of holes 2. When the garbage container 1 is a paper bag, the gaps between the fibers serve as the holes 2. The opening 4 of the garbage container 1 placed in a bucket-shaped storage section 3 made of a microwave reflective material is widened by a frame 5, and the locking section 6 of the storage section 3 is opened.
and is closed with an inner lid 7.

The garbage 8 is put into the garbage container 1 by opening the inner lid 7 and the door 9 at the top of the storage section 3, which opens and closes. Microwaves oscillated by the magnetron 10 are configured to be irradiated onto the dust 8 in the storage section 3 through a waveguide 11. The opening of the waveguide 11 is covered with a microwave transparent lid 12.

A condensing section 13 surrounds the garbage container 1 in the storage section 3.
A drain pipe 14 is provided at the bottom of the storage section 3. Furthermore, the downstream side of the drain pipe 14 is divided into a steam exhaust pipe 15 and a drain pipe 16 . The air introduced into the cooling path 18 formed around the outer periphery of the storage section 3 by the blower 17 passes through the cooling path 18, the heat exchange wall 21 which is the outer wall of the garbage container 1, and the garbage container 1, and is mixed with steam and sucked. The steam is discharged outside through the steam exhaust pipe 15 and the catalyst 22 heated by the heater 20.

[0015] A temperature detecting section 2 is installed in the steam exhaust pipe 15 and the catalyst 22.
3 and 24 are provided. A trap 25 and a sewer pipe 26 are located below the drain pipe 16. The operation of the present invention having the above configuration will be explained below.

Garbage is thrown into the garbage container 1 through the door 9. The garbage container 1 can be taken in and taken out through a door 9 that is detachably provided inside the storage section 3. When the magnetron 10 oscillates microwaves in this state, the temperature of the dust 8 rises and generates water vapor. The temperature of the waste container 1 which is permeable to microwaves does not rise, but the temperature of the waste 8 which is permeable to microwaves tends to rise more than the central part where there is no heat dissipation. Therefore, water vapor is first generated in the center of the waste 8, and comes out from the surface while pushing out the free water due to thermal destruction of the surrounding waste. The pushed out free water passes around other garbage 8, flows down through the hole 2 at the bottom of the garbage container 1, and is discharged to the outside through the drain pipe 14.

Water vapor passes through the hole 2 of the garbage container 1 and enters the storage section 3.
Since the condensation section 13 outside the garbage container 1 is filled with the waste and is cooled by the air from the blower 17, it condenses on the inner wall of the storage section 3 and is discharged to the drain pipe 14. Since the condensed water of steam has undergone a distillation process, it has relatively little organic matter and flows down smoothly and is quickly discharged, so water droplets do not absorb microwaves and the bottom of the storage compartment 3 is kept relatively clean. It will be done.

The heat of condensation when the water vapor condenses and the latent heat of the condensed water heat the air in the cooling path 18 on the outer periphery of the storage section 3 via the heat exchange wall 21. Heat exchange performance is improved by providing unevenness on the heat exchange wall 21. In order to recover the heat of condensation, the cooling air flows in the opposite direction to the direction in which the condensed water flows, and first receives the sensible heat of the low-temperature condensed water located below the garbage container 1, and then receives the sensible heat of the high-temperature condensed water. Furthermore, it receives the heat of condensation from water vapor and becomes high-temperature air.

This high-temperature air makes a U-turn before the lid 9 and passes through the waste 8 in the waste container 1, thereby promoting the drying of the waste 8. This heated air is difficult to cool the garbage 8, so it accelerates drying, and the catalyst 20 supplies oxygen necessary for oxidizing the odor (as the drying progresses, the garbage 8
generates some amount of decomposition gas. This causes odor, but it is oxidized and rendered odorless by the catalyst 22, which is maintained in advance by the temperature detection unit 24 so as to reach the activation temperature by the heater 20). The moist air that has passed through the garbage is dehydrated again in the condensation space and discharged to the outside. The progress and completion of this drying is detected by means such as a decrease in the temperature of the temperature detection section 23, an increase in the temperature of the magnetron 10, or a change in the weight of the dust 8.

The garbage 8 shrinks when dry and accumulates at the bottom of the garbage container 1, but since it is dry, it will not rot even if stored as is, and can be repeatedly disposed of until the garbage container 1 is full.

[0021] The heat of the microwave is consumed as vapor latent heat of water, sensible heat of air, and heat radiated from the device. Therefore, when the blower 17 is controlled to substantially stop the amount of air blown and the waste 8 is heated and dried, almost no heat escapes to the outside of the container and efficiently becomes condensation heat of water vapor or latent heat of condensation heat. Focusing on this point, the present invention uses a bag as the garbage container and uses microwaves intermittently. That is, the detection unit 27 detects that the temperature of the storage chamber 3 or the waste container 1 has risen to a predetermined temperature due to the heat of condensation, the magnetron 10 is stopped, and at the same time, the amount of air blown by the blower 17 is increased to transfer the heat of condensation from the device to the waste. Transferred to container 8 and dried with warm air. The garbage 8 is cooled by latent heat while being dried by the dry warm air. When the temperature drops to a predetermined level, microwaves are irradiated and the amount of air blown is reduced again. By repeating this process, wasteful outflow of heat to the outside of the device is reduced. That is,
Since the storage section 3 or the garbage container 1 essentially functions as a heat storage material, there is no loss in heat conduction.

Furthermore, while microwaves tend to heat the dust from the center, warm air heats and dries only the outer surface, so drying can be speeded up by alternately operating the two.

Although microwaves are used as the heating means in this embodiment, the same effect can be obtained even if the method described in claim 1 is carried out using an infrared heater, an electric resistance wire heater, or the like.

[0024]

Effects of the Invention As is clear from the above embodiments, a condensing section that cools water vapor evaporated from garbage with cooling air;
The cooling air has a blowing means and exhaust port for the cooling air, and a condensed water discharge means, and the cooling air is in contact with steam and condensed water through a heat exchange wall and flows in the opposite direction to the condensed water. This makes it possible to reuse the heat of condensation of water vapor and the latent heat of condensed water to dry waste.

In other words, the heat applied to the waste from the heating means is less likely to escape to the outside due to the discharge of condensed water.
This makes it possible to realize a garbage treatment device with extremely high thermal efficiency.

Furthermore, by alternately increasing and decreasing the output of the microwave heating means and the blower, thermal efficiency can be improved and an economical garbage disposal apparatus can be realized.

[Brief explanation of drawings]

[Fig. 1] A vertical cross-sectional view of a garbage disposal device in an embodiment of the present invention.

[Explanation of symbols]

1 Garbage container 2 holes 3 Storage section 13 Condensation section 18 Cooling path 21 Catalyst

Claims (3)

[Claims] Claims: 1. A garbage container for storing garbage, a heating means for heating the garbage stored in the garbage container, a condensing section for forcibly cooling water vapor evaporated from the garbage with cooling air, and water vapor generated in the condensing section. A waste disposal device comprising: a discharge port for discharging condensed water; a heat exchange section for transmitting condensation heat generated in the condensation section to the cooling air; and a blower for flowing the cooling air. 2. The waste according to claim 1, wherein the cooling air flows in the opposite direction to the direction in which the condensed water flows when passing through the heat exchanger, and is exhausted after passing through the waste container. Processing equipment. 3. The waste disposal apparatus according to claim 1, wherein microwaves are used as the heating means, and the outputs of the microwave heating means and the blower are alternately increased and decreased.