JP2900636B2 - Waste treatment equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in an apparatus for easily processing waste generated in a kitchen, a hospital, or the like. Garbage is currently being landfilled or incinerated by local governments. Waste disposal has to rely on incineration due to lack of landfill sites, but incineration also has problems in terms of sanitation during transportation and difficulty in locating incineration plants. The present invention relates to an apparatus for reducing the weight, reducing the volume and sanitizing a place where refuse is generated, and can solve this problem. INDUSTRIAL APPLICATION This invention is utilized for refuse disposal of a household, a restaurant, a grocery store, etc.

[0002]

2. Description of the Related Art A method of drying or incinerating refuse for sanitary disposal is used. Although there are various types suitable for large-scale equipment, a method for drying or burning refuse using microwaves has been proposed as a type suitable for small-sized equipment. This method has a fast drying speed and makes the garbage sanitary without decay. Further, the weight is reduced and the disposal is easy.

[0003]

However, the conventional method has a problem that a large amount of electric power is required to dry the refuse because the latent heat of evaporation of the water is large.
On the other hand, the water after the water vapor evaporated from the refuse is condensed is discharged to the outside while having the heat of condensation, and the heat is not effectively used.

The refuse treatment apparatus of the present invention solves the above-mentioned problem. By reusing heat for condensing water vapor generated from refuse for refuse drying, the drying efficiency is improved and the power consumption is reduced. The purpose of the present invention is to realize a refuse treatment device that can dry refuse.

[0005]

Means for Solving the Problems As a first means of the present invention for achieving the above object, a condensing section for forcibly cooling steam generated from refuse by heating with cooling air is provided. A heat exchange wall for transmitting the generated condensation heat and latent heat of the condensed water to the cooling air and a blower for cooling air flow were provided.

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

Further, as a third means, a microwave is used, and the output of the microwave heating means and the output of the blower are alternately increased and decreased.

[0008]

The operation of the present invention in the above configuration will be described below.

Heating refuse containing a large amount of water generates steam. The water vapor condenses in the surroundings and generates heat of condensation to form condensed water.

The condensed water flows down and is discharged to the outside through an exhaust port. The blower sends air in a direction opposite to the flowing direction of the condensed water, and receives heat of condensation and latent heat through a heat exchange wall. The hot air is sent to the garbage and promotes drying.

Further, when heating by microwaves, the output of the blower is weakened, so that the temperature inside the refuse container becomes sufficiently high and the evaporation of water is actively performed.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a first embodiment of the present invention; In FIG. 1, reference numeral 1 denotes a refuse container made of a microwave transmitting material such as plastic, ceramic, glass, and paper. The garbage container 1 may be bag-shaped or cup-shaped, and is provided with a plurality of holes 2. When the trash container 1 is a paper bag, the gap between the fibers functions as the hole 2. The opening 4 of the garbage container 1 placed in the tub-shaped storage portion 3 made of a microwave reflecting material is expanded by a frame 5 and the locking portion 6 of the storage portion 3
And is closed by the inner lid 7.

The refuse 8 is put into the refuse container 1 with the inner lid 7 and the opening / closing door 9 at the top of the storage section 3 opened. The microwave oscillated by the magnetron 10 is applied to the dust 8 of the storage unit 3 by the waveguide 11. The opening of the waveguide 11 is covered with a microwave permeable lid 12.

The condensing section 13 surrounds the waste container 1 in the storage section 3.
There is a drain pipe 14 at the lower part of the storage section 3. Further, the downstream of the drain pipe 14 is divided into a steam discharge pipe 15 and a drain pipe 16. The air taken into the cooling path 18 formed on the outer periphery of the storage unit 3 by the blower 17 passes through the cooling path 18, the heat exchange wall 21 which is the outer wall of the trash container 1, and the trash container 1, is mixed with steam, and is sucked. The gas is discharged outside the room through the steam discharge pipe 15 and the catalyst 22 heated by the heater 20.

The temperature detector 2 is connected to the steam discharge pipe 15 and the catalyst 22.
3, 24 are provided. The lower part of the drain pipe 16 is a trap 25 and a sewer pipe 26. The operation of the present invention having the above configuration will be described below.

The refuse is put into the refuse container 1 through the door 9. The garbage container 1 can be put in and taken out through a door 9 which is detachably provided inside the storage section 3. When the magnetron 10 oscillates microwaves in such a state, the temperature of the refuse 8 rises to generate water vapor. Although the temperature of the microwave-permeable refuse container 1 does not rise, the temperature of the refuse 8 having good microwave permeability tends to rise from the central part where there is no heat radiation. Therefore, water vapor is first generated at the center of the refuse 8, and is released from the surface while pushing free water due to thermal destruction of the surrounding refuse. The extruded free water flows around the other refuse 8, flows down from the lower hole 2 of the refuse container 1, and is discharged outside through the drain pipe 14.

The water vapor passes through the hole 2 of the refuse container 1 and the storage section 3
Since the condensing part 13 outside the waste container 1 is filled and cooled by the air of the blower 17, the condensing part 13 condenses on the inner wall of the storage part 3 and is discharged to the drain pipe 14. Since the condensed water vapor has undergone a distillation process, it contains relatively little organic matter and flows down smoothly and is quickly discharged, so that water droplets do not absorb microwaves and the bottom of the storage unit 3 is also kept relatively clean. It is.

The heat of condensation and the latent heat of the condensed water when the water vapor condenses heat the air in the cooling passage 18 on the outer periphery of the storage section 3 through the heat exchange wall 21. The heat exchange property is enhanced by providing the heat exchange wall 21 with irregularities. In order to recover the heat of condensation, the cooling air flows in a direction opposite to the direction in which the condensed water flows down. Furthermore, it receives the heat of condensation of water vapor and becomes high-temperature air.

This high-temperature air makes a U-turn before the lid 9 and passes through the refuse 8 of the refuse container 1 to promote drying of the refuse 8. Since the heated air hardly cools the refuse 8, drying is promoted, and oxygen required for oxidizing the odor is supplied by the catalyst 20 (as the drying proceeds, the refuse 8
Generates a small amount of decomposition gas. This causes odor, but it is oxidized and deodorized by the catalyst 22 previously held by the temperature detection unit 24 so as to reach the activation temperature by the heater 20). The air containing moisture passing through the refuse is dehydrated again in the condensing space and discharged to the outside. The progress and end of the drying may be caused by a decrease in the temperature of the temperature detection unit 23 or a decrease in the temperature of the magnetron 10.
Is detected by means such as a rise in the temperature of the refuse or a change in the weight of the refuse 8.

The refuse 8 is dried and shrunk and accumulates in the lower part of the refuse container 1, but since it is dry, it does not rot even if it is stored as it is, and can be repeatedly processed until the refuse container 1 is full.

The microwave heat is consumed as latent heat of water vapor, sensible heat of air, and heat radiation from the apparatus. Therefore, when the amount of air is substantially stopped under the control of the blower 17 and the refuse 8 is heated and dried, there is almost no heat escaping to the outside of the device, and the heat becomes the heat of condensation of steam or the latent heat of heat of condensation efficiently. Focusing on this point, in the present invention, the garbage container is used as a bag and the microwave is intermittently operated. That is, the detection unit 27 detects that the storage chamber 3 or the refuse container 1 has been heated to a predetermined temperature by the heat of condensation, stops the magnetron 10, and simultaneously increases the air volume of the blower 17 to reduce the heat of condensation of the device. It is transported to the container 8 and dried with hot air. The refuse 8 is cooled by latent heat while being dried with dry warm air. When the temperature drops to a predetermined temperature, microwaves are irradiated to reduce the amount of air to be blown again. By repeating this, wasteful outflow of heat to the outside of the apparatus is reduced. That is,
Since the storage section 3 or the garbage container 1 substantially functions as a heat storage material, loss of heat conduction is eliminated.

Further, while microwaves tend to heat dust from the center, warm air heats and drys only the outer surface, so that the drying is accelerated by alternately operating both.

In this embodiment, the microwave is used as the heating means, but the same effect can be obtained even if the first embodiment is carried out using an infrared heater, an electric resistance wire heater or the like.

[0024]

As is apparent from the above embodiment, a condensing section for cooling steam evaporated from refuse with cooling air,
The cooling air has a blowing means and an exhaust port for the cooling air, and a means for discharging the condensed water. Thereby, refuse can be dried by reusing the heat of condensation of steam and the latent heat of condensed water.

That is, the heat added to the refuse from the heating means rarely escapes to the outside by discharging the condensed water,
It is possible to realize a refuse treatment device with very high thermal efficiency.

Further, by alternately increasing and decreasing the output of the microwave heating means and the output of the blower, the thermal efficiency can be improved, and an economical waste disposal device can be realized.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a refuse treatment apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Garbage container 2 hole 3 Storage part 13 Condensing part 18 Cooling path 21 Catalyst

────────────────────────────────────────────────── (5) References JP-A-64-28408 (JP, A) JP-A-63-259314 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) F23G 5/00 119

Claims (3)

(57) [Claims] 1. A waste container for storing waste, a heating means for heating the waste stored in the waste container, a condensing part for forcibly cooling water vapor evaporating from the waste with cooling air, and a condensing part. A refuse treatment apparatus comprising: a discharge port that discharges condensed water to be condensed; a heat exchange unit that transmits condensation heat generated in the condensation unit to the cooling air; and a blower for cooling air flow. 2. The refuse according to claim 1, wherein the flow of the cooling air flows in a direction opposite to the direction in which the condensed water flows down when passing through the heat exchange section, and is exhausted after passing through the refuse container. Processing equipment. 3. The refuse treatment apparatus according to claim 1, wherein microwaves are used as the heating means, and outputs of the microwave heating means and the blower are alternately increased and decreased.