JP2000130932A - Garbage treating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refuse treating apparatus in which waste treatment for garbage is facilitated with a simple drying treatment. SOLUTION: There are provided a container 2 for containing wet refuse, heating means (heater 14) for heating garbage, separation means (heat dissipation apparatus 46, gas/liquid separation chamber 56) for guiding steam produced owing to heating to the outside of the container to condense water (condensed water 60), and then returning air to the foregoing container, and discharge means (drain pipe 62) for discharging the water condensed and separated from the steam to the outside of the container in response to pressure acting into the container. Steam produced from garbage owing to heating is circulated for cooling and is separated into air and water whereby the container and a circulation system are reduced in pressure and pressure in the container is kept unchanged. Thus, no odor of wet refuse is realized and reduction of the weight of garbage through drying processing is achieved to facilitate a waste treatment of garbage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a garbage processing apparatus for processing garbage, typified by kitchen garbage such as vegetables and seafood from a kitchen.

[0002]

2. Description of the Related Art Garbage such as kitchen garbage contains a large amount of water and is therefore unsuitable for ordinary incineration and is generally troublesome to dispose. The large amount of water contained in garbage is
This is because the incineration efficiency is reduced. Disposal of garbage causes environmental pollution. In addition, although garbage can be diverted to fertilizer, untreated garbage cannot be used as fertilizer as it is.

[0003]

Conventionally, heat treatment of garbage has been proposed, but the release of water vapor generated by heating to the outside air causes a bad smell. Therefore, a deodorizing treatment is required. Conventionally, there are methods such as a catalytic method and an activated carbon method. In the catalytic method, 200 to obtain a sufficient deodorizing effect is required.
Since the catalyst must be maintained at a high temperature of ~ 400 ° C, and the wind speed for passing the catalyst must be increased,
Heating is troublesome and unsuitable for home use. Also,
Since various odors are mixed in the steam, the activated carbon method may not be able to obtain the deodorizing effect. Moreover, since activated carbon absorbs odorous particles, its saturation reduces the deodorizing effect and needs to be replaced periodically. As other methods, ozone deodorization, platinum deodorization, biodeodorization and the like have been proposed, but it is difficult to completely remove malodor.

[0004] Therefore, an object of the present invention is to provide a garbage disposal apparatus which realizes easy disposal of garbage by a simple drying process.

[0005]

The garbage disposal apparatus of the present invention comprises a container (2) for accommodating garbage (4), a heating means (heater 14) for heating garbage, and steam (3) generated by heating. ) To the outside of the container to condense water (condensed water 60) and then return the air to the container (radiator 46, gas-liquid separation chamber 56), the water condensed and separated from steam. A discharge means (drain pipe 62) for discharging water from the container in accordance with the pressure acting in the container, circulates and cools the steam generated from the garbage by heating, separates the water and the air into water, Depressurize the circulation system and maintain the pressure inside the container at a constant level.
Achieving weight reduction by drying garbage and facilitating disposal of garbage.

According to a first aspect of the present invention, there is provided a garbage disposal apparatus according to the present invention, wherein a container (2) for accommodating garbage (4) and a heating means (heater 14) for heating the garbage contained in the container. Separating means (radiator) for guiding water vapor generated in the container by the heating of the heating means to the outside of the container to condense and separate water from the water vapor and returning the air from which the water has been separated to the container. 46, a gas-liquid separation chamber 56) and a discharge means (drain pipe 6) for discharging the water obtained by the separation means to the outside of the container according to the pressure acting on the inside of the container.
2).

With such a configuration, the garbage stored in the container is heated by the heat applied from the heating means. As a result, the garbage shrinks and generates a large amount of water vapor. If this water vapor leaks, it causes a bad smell. Therefore, this water vapor is led out of the container without leaking out of the container, and cooled to condense the water,
The circulation system including the vessel and the separation means is depressurized. That is,
The pressure in the vessel is kept constant. Water condensed from the steam is discharged out of the container through a discharge means in accordance with the pressure acting in the container. As a result, the garbage can be easily disposed of by deodorizing the heat treatment together with the heat shrinkage of the garbage due to the heating.

According to a second aspect of the present invention, there is provided a garbage processing apparatus according to the present invention, wherein a container (2) for storing the garbage (4) and a heating means (heater 14) for heating the garbage stored in the container. A circulation path (36) for guiding the water vapor (3) generated in the container to the outside of the container and returning the air separated from the water vapor to the container; and cooling the water vapor guided to the circulation path. A condensing means (radiator 46, gas-liquid separation chamber 56) for condensing and separating water from the water vapor, and the water container separated by the condensing means in accordance with a pressure acting on the container and the circulation path. And a discharge means (drain pipe 62) for discharging to the outside.

That is, in the present invention according to claim 2, the separating means is constituted by a condensing means for separating water from water vapor, and a circulation path for returning only air to the container side after condensing the water by the condensing means. Is becoming Therefore, water vapor generated by heating by the heating means is guided from the container to the condensing means, and water is condensed from the water vapor by cooling. By returning the air from which the water has been separated by the condensing means to the container side through the circulation path, the air is circulated and cooled to maintain the pressure in the container constant, and the water condensed from the steam acts in the container. It is discharged through the discharge means outside the container according to the pressure. As a result, the garbage can be deodorized as well as shrinkage of the garbage by the heat treatment, and the garbage can be easily disposed of.

3. The garbage disposal apparatus according to claim 1, wherein said discharging means has a bent pipe, and retains said water by the shape and gravity of said pipe, said separating means or said circulation path. A trap (odor trap 64) for discharging the water due to the pressure acting through or when the amount of retained water exceeds a predetermined amount. That is, the water guided to the discharge means side is used to prevent odor. The water stored in the trap is stored in the bent part of the pipeline by the action of gravity and has the function of separating the outside and the circulation path.However, the pressure on the circulation path side increases, and the function of shutting off the stored water is reduced. When it exceeds, or when the staying amount exceeds a predetermined amount, the staying water is discharged. However,
The water is sufficiently cooled in the trap and does not become a source of odor.

3. The garbage disposal apparatus according to claim 1, wherein the water vapor generated in the container is forcibly guided to the separation means or the circulation path.
0, fan motor 42). That is, the water vapor in the container can be circulated through the separation means or the circulation path without interruption by the pressure feeding means, and the circulation and cooling processing are performed.

The garbage disposal apparatus according to claim 1 or 2, further comprising a stirring means (scraper 22, motor 24) for stirring the garbage in the container. That is, the garbage in the container is stirred by the stirring means, and the garbage is uniformly heated.

The garbage disposal apparatus according to claim 1 or 2, wherein the heating means is controlled according to a heating temperature of the garbage or a temperature in the container. That is, feedback control is used for heating the garbage. Such control can prevent abnormal heating of garbage.

3. The garbage disposal apparatus according to claim 1, wherein the heating means stops the heating operation when the temperature of the steam discharged from the container reaches a predetermined temperature. That is, abnormal heating of the garbage is prevented by utilizing the circulating air temperature as control information in the heating control of the garbage.

3. The garbage disposal apparatus according to claim 1, wherein the air in the container is circulated to the separation means or the circulation path for a predetermined time after the operation of the heating means is stopped. That is, the inside of the container is cooled by air circulation.

3. The garbage processing apparatus according to claim 1, wherein the air in the container is separated from the circulating air until the temperature of the circulating air after the operation of the heating means is reduced to a predetermined temperature. It is characterized by being circulated.
That is, the inside of the container is cooled by air circulation, and the temperature is used for the control information, so that a reliable cooling process can be performed.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.

FIG. 1 shows an embodiment of the garbage processing apparatus of the present invention.

The garbage processing apparatus is provided with a hermetically sealed container 2, and the container 2 accommodates garbage 4 to be heat-treated. Container 2 is a pot for heating garbage 4,
In this embodiment, the bottom surface of the container 2 is formed by a curved surface forming a hemi-cylinder, but may be hemispherical. This container 2 has high abrasion resistance against mechanical contact,
Metallic materials such as stainless steel and titanium, ceramics, and the like can be used as a corrosion-resistant material against the acid and alkali contained in the high-temperature oxidation and garbage 4. This container 2 contains garbage 4
An opening 6 for taking out refuse after loading or processing of the garbage is formed, and a lid 8 for opening and closing the opening 6 is provided with a hinge 1.
It can be opened and closed at 0. The container 2 is held in a sealed state by a lid 8. In the vicinity of the opening 6 of the container 2, a switch 12 is provided as an open / close sensor for detecting the opening / closing of the lid 8. Note that an automatic opening / closing mechanism may be provided as means for automatically opening / closing the lid 8.

The container 2 is provided with a heater 14 for heating the garbage 4 in the container 2 on the outer bottom side. The heater 14 is made of, for example, a nichrome wire. The heater 14 is provided with a temperature sensor 16. Further, the container 2 is provided with a stirring means for stirring the garbage 4. That is, a rotating shaft 18 is attached to the center of the container 2, a plurality of supporting arms 20 are attached to the rotating shaft 18, and a scraper 22 is attached to the tip of the supporting arm 20. Each of the scrapers 22 is a wing that rotates to scrape the garbage 4 and prevent the garbage 4 from adhering to the inner surface of the container 2, and is made of a metal material that does not damage the inner wall surface of the container 2. Therefore, the outermost peripheral surface of the scraper 22 is set to rotate slightly away from the inner wall surface of the container 2. Each scraper 22
A motor 24 is provided as means for rotating the motor. A sprocket wheel 26 is mounted on the motor 24, and a sprocket wheel 28 is mounted on the rotating shaft 18. A chain 30 is hung around each sprocket wheel 26, 28 as rotation transmitting means. ing. Therefore, the forward / reverse rotation of the motor 24 is transmitted to the rotating shaft 18,
The scraper 22 can be rotated in an arbitrary direction indicated by an arrow N at various intervals, such as a fixed angle rotation, a unit rotation, or an intermittent rotation.

In the upper part of the container 2, an air supply port 32 for guiding the water vapor 3 generated in the container 2 to the outside is formed.
An intake port 34 for guiding the treated air into the container 2 is formed,
A circulation path 36 is formed between the air supply port 32 and the intake port 34. That is, the container 2 and the circulation path 36 form a certain closed space.

The air supply port 32 is formed with an air supply chamber 38 wider than the intake port 34, and a circulation fan 40 is installed in the air supply chamber 38 as a pressure feeding means. The circulation fan 40 is rotated by a fan motor 42 installed outside the circulation path 36. By the rotation of the circulation fan 40, the steam 3 and the air generated in the container 2 are forcibly guided to the circulation path 36 in the directions indicated by arrows a and b. A temperature sensor 44 is provided on the wall surface of the air supply chamber 38 to detect the temperature of the steam 3 or the like guided into the air supply chamber 38.

The circulation path 36 is provided with a condensing means for radiating and cooling the heat of the steam 3 to condense the water, and a radiator 46 as a separating means for separating the condensed water.
The radiator 46 includes a plurality of conduits 48 and countless radiating fins 50.
, And is air-cooled in this embodiment. Therefore, a cooling fan 52 is provided as forced cooling means, and the cooling fan 52 is rotated at a high speed by a fan motor 54.

At the outlet of the radiator 46, a gas-liquid separation chamber 56 is provided as means for separating condensed water and air. The gas-liquid separation chamber 56 is connected to a circulation path 36 that guides the separated air 58 to the intake port 34 of the container 2, and serves as a discharge unit that discharges the separated condensed water 60 from the circulation path 36 to the outside. Drain pipe 62 is connected.

The drain pipe 62 is provided with an odor trap 64 formed by bending a pipe as an odor stop. That is, the odor trap 64 is formed by a part of the drain pipe 62 or another pipe, and has a semicircular bent portion 66 that is convex downward.
And a semicircular bent portion 68 having an upward convexity formed at predetermined intervals in the vertical direction. The condensed water 60 from the gas-liquid separation chamber 56 is bent toward the bent portion 66 by gravity.
By retaining a predetermined amount that does not exceed 8, an odor control is formed according to the pressure acting on the circulation path 36. Therefore, the condensed water 60 is discharged in the direction of arrow c through the odor trap 64.

Next, FIG. 2 shows a control device for garbage disposal. The control arithmetic unit 70 includes a CPU 72 for executing predetermined control by executing a program, a ROM 74 for storing an operation program and data, a RAM 76 for temporarily storing an arithmetic operation, an A / D converter 78, an input interface 80, and an output interface. 82 and the like.
The A / D converter 78 is connected to a detection circuit 84 including a voltage amplifier and the like, and detection signals from the temperature sensors 16 and 44 are applied through the detection circuit 84. The input interface 80 is connected to a detection circuit 86 composed of a voltage amplifier and the like, and the switch 12 and the operation switch 88
Is applied through this detection circuit 86. The operation switch 88 is a switch for starting the garbage disposal operation. The output interface 82 is connected to the heater 14, the motor 24, and the fan motor 4 via a drive circuit 90.
2, 54 and a display 92 are connected. Display 92
Can be composed of visual indicators such as LEDs, LCDs, fluorescent indicators, etc., and auditory indicators such as speakers, buzzers, etc., and provide necessary or audible indications or alarms to the user. Can be announced.

Next, the operation will be described with reference to the operation flowchart shown in FIG.

Step S1 shows the pre-stage processing and the start of operation of the garbage processing. The lid 8 is opened in the container 2 to put the garbage 4 to be treated, and the operation switch 88 is turned on.
Opening and closing of the lid 8 is detected by the switch 12. This detection signal is applied to the CPU 72 from the input interface 80 through the detection circuit 86 as closing information or opening information. When the switch 12 detects that the lid 8 has been closed, the process proceeds to step S2.

In step S2, the drying process is started on condition that the operation switch 88 is turned on and the lid 8 is closed. That is,
In step S2, the driving of the heater 14 and the temperature control thereof are started, the motor 24 and the fan motors 42 and 54 start operating, and the circulation and heat radiation of the steam 3 generated in the container 2 are started. At this time, the scraper 22 is rotated by the rotation of the motor 24, and the garbage 4 in the container 2 is stirred and the garbage 4 attached to the bottom surface of the container 2 is scraped off.

When such an operation is continuously performed, the atmospheric temperature in the container 2 and the circulation path 36 is in an equilibrium state, and
The generation of steam 3 from the garbage 4 becomes active. That is, the steam 3 is guided to the radiator 46 by the circulation fan 40 to be radiated and cooled, and the steam 3 is condensed and separated and generated into air 58 and condensed water 60. That is, assuming that the heat amount of the steam 3 is Q ₀ and the heat amount radiated by the radiator 46 is Q ₁ by heating the garbage 4, the heat amount (Q ₀ −Q ₁ ), which is the difference between the two, is stored in the container 2. Is returned. And condensed water 60
Stays in the odor trap 64 and shuts off the container 2 and the drain pipe 62 communicating with the outside air. As a result, odor emission to the outside air is prevented.

In step S3, it is monitored whether the temperature of the atmosphere in the equilibrium state has started to rise and has exceeded a predetermined temperature. If the ambient temperature has risen, it is determined that the water in the garbage 4 has evaporated (the drying process is completed), and step S4 is performed.
Move to

In step S4, the energization of the heater 14 is stopped as the end of the drying process, and the process proceeds to step S5.
Step S5 is a routine for cooling the inside of the container 2.
That is, the rotation operation of the fan motors 42 and 54 is continued, and the temperature of the atmosphere in the container 2 is reduced through the circulation of the air 58. This air circulation is performed for a predetermined time or until the ambient temperature decreases to a predetermined temperature. As a result, the pressure in the closed space formed by the container 2 and the circulation path 36 can be reduced by lowering the ambient temperature,
When the lid 8 is opened, leakage of water vapor can be suppressed.

Then, in step S5, it is determined whether or not the ambient temperature in the container 2 has decreased to a predetermined temperature, and until the ambient temperature has decreased to the predetermined temperature, the fan motor 42,
When the rotation operation of step S54 is continued and the ambient temperature decreases to the predetermined temperature, the process proceeds to step S6.

In step S6, the operation of the motor 24 and the fan motors 42 and 54 is stopped based on the decrease in the ambient temperature, and then the flow shifts to step S7 to indicate that the garbage 4 is ready to be dried and taken out. The notification is made on the display 92.

The user can open the lid 8 of the container 2, take out the dried refuse, and discard it. In this case, irrespective of the ON state of the operation switch 88, when the lid 8 is opened, the opening information is added to the CPU 72, and all of the rotation operation and the heating operation are held in a stopped state, and advanced safety measures are taken. Have been.

Next, FIG. 4 shows the ambient temperature CT in the container 2.
And the transition of the surface temperature HT of the heater 14, where the horizontal axis represents time t (minutes) and the vertical axis represents temperature T (° C.).

In the section t _A (= t _{0 to} t ₁ ), the heater 14
2 before the water in the garbage 4 reaches the boiling point by heating
Shows the temperature rise of the ambient temperature in the section, and in this section t _A ,
The expansion pressure due to the start of the generation of the steam 3 increases, and the pressure causes a part of the condensed water 60 and the air 58 to be discharged to the outside through the drain pipe 62. At this time, there is no stench. The air 58 radiated by the radiator 46 to separate the condensed water 60 is returned to the container 2 through the circulation path 36 and mixed with the air in the container 2.

In the section t _B (= t _{1 to} t ₂ ), the water in the garbage 4 reaches the boiling point, and the atmosphere temperature is in an equilibrium state.
At this time, the expansion of the steam 3 by heating and the contraction of the steam 3 by cooling are performed, that is, the generation and condensation of the steam 3 continuously progress, and the external pressure and the internal pressure become substantially equal. The condensed water 60 stays in the odor trap 64 again, and
Block 2 As a result, in a temperature range where the generation of steam 3 is active, the steam 3 is sealed in the container 2 and leakage to the outside is suppressed. As a result, the surrounding environment is not harmed by the release of the steam 3.

When the water in the garbage 4 evaporates,
The ambient temperature in the container 2 starts to rise again, and when the ambient temperature exceeds the predetermined temperature HO, the energization of the heater 14 is stopped. Further, the power supply to the heater 14 may be stopped when the temperature rises by a predetermined temperature from the equilibrium temperature.

Further, since the pressure in the container 2 starts to rise when the temperature changes from the equilibrium temperature in the container 2 to the rise, the heater 14 is stopped to suppress the pressure rise. The operation of the fan motors 42 and 54 is continued for a predetermined time to release the ambient temperature in the container 2 to the outside and cool it, thereby lowering the pressure of the steam 3. As a result, when the lid 8 is opened, the release of the water vapor 3 to the outside can be suppressed. Further, by detecting the temperature by the temperature sensor 44, when the ambient temperature is reduced to a predetermined temperature, the fan motors 42, 54
May be stopped.

[0041]

As described above, according to the present invention,
The following effects can be obtained. a. The garbage can be dried by heating, and the steam generated by heating is condensed by cooling.
Since water is separated from water vapor and discharged to the outside according to the pressure state in the container, the container and the outside air can be reliably separated and shut off, and leakage of gas such as water vapor, which causes a bad smell, can be prevented. b. After the heat treatment of the garbage, the treated waste can be taken out of the sufficiently cooled container, so that the leakage of water vapor generated by the heat treatment can be reliably reduced, and environmental pollution due to bad smell can be prevented. c. Garbage obtained by drying garbage by heat shrinkage has a significantly smaller volume than garbage, which facilitates disposal, and can be expected to be reused as fertilizer.

[Brief description of the drawings]

FIG. 1 is a diagram showing one embodiment of a garbage processing apparatus of the present invention.

FIG. 2 is a block diagram showing a control device of the garbage processing apparatus.

FIG. 3 is a flowchart showing garbage processing.

FIG. 4 is a diagram illustrating the operation of the garbage processing.

[Explanation of symbols]

 2 container 3 water vapor 4 garbage 14 heater (heating means) 22 scraper (stirring means) 24 motor (stirring means) 36 circulation path 40 circulation fan (pressure feeding means) 42 fan motor (pressure feeding means) 46 radiator (separating means, Condensing means) 56 gas-liquid separation chamber (separating means) 58 air 60 condensed water 62 drainage pipe (discharging means) 64 odor trap

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3L113 AA07 AB02 AB05 AC08 AC16 AC21 AC42 AC46 AC51 AC54 AC57 AC58 AC60 AC62 AC63 AC67 AC75 AC77 AC78 AC82 AC87 BA01 CA04 CA08 DA05 DA19 DA21 DA30

Claims (9)

[Claims] A container for accommodating garbage; a heating means for heating the garbage contained in the container; and a water vapor generated in the container by heating the heating means for guiding the water vapor to the outside of the container. Separating means for condensing and separating water from the water vapor and returning the air from which the water has been separated back to the container; and the water obtained by the separating means is provided outside the container in accordance with the pressure acting on the inside of the container. A garbage disposal apparatus, comprising: a discharging means for discharging the garbage to the garbage. 2. A container for accommodating garbage, a heating means for heating the garbage accommodated in the container, and water vapor generated in the container being led out of the container, and air separated from the water vapor. A circulation path for returning the water to the vessel, a condenser for cooling the water vapor guided to the circulation path, and condensing and separating water from the water vapor. A garbage disposal device, comprising: a discharge unit configured to discharge the container to the outside in accordance with a pressure acting on a circulation path. 3. The discharge means comprises a bent tube,
The water is retained by the shape and gravity of the pipe body, and the pressure acting through the separation means or the circulation path causes
3. The garbage disposal device according to claim 1, further comprising a trap that discharges the water when the amount of retained water exceeds a predetermined amount. 4. 4. The garbage disposal apparatus according to claim 1, further comprising a pressure feeding means for forcibly guiding the water vapor generated in the container to the separation means or the circulation path. 5. The garbage disposal apparatus according to claim 1, further comprising a stirring means for stirring the garbage in the container. 6. The garbage disposal apparatus according to claim 1, wherein the heating means is controlled according to a heating temperature of the garbage or a temperature in the container. 7. The garbage disposal apparatus according to claim 1, wherein the heating unit stops the heating operation when the temperature of the steam flowing out of the container reaches a predetermined temperature. 8. A predetermined time after the operation of the heating means is stopped,
3. The garbage disposal apparatus according to claim 1, wherein the air in the container is circulated through the separation unit or the circulation path. 9. The method according to claim 1, wherein the air in the container is circulated to the separating means or the circulation path until the temperature of the circulating air after the operation of the heating means is reduced to a predetermined temperature. Or the garbage processing apparatus according to 2.