JPH1157673A - Garbage disposal facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove a moisture content in a treating tank restraining a thermal energy loss by a method wherein air in a hermetically sealed container which surrounds the treating tank to hermetically seal the tank is cooled by use of a refrigeration cycle, a part of the moisture contained in the air is condensated to prepare condensate, and the condensate is discharged outside. SOLUTION: When garbage is charged into a treating tank 3, and a top cover is closed, a stirring vane 4 is rotated with a control means 21, and the garbage is mixed with a garbage moisture adjusting material 9. In this case, a temperature of the treating tank 3 hermetically sealed with a hermetically sealing container 10 is controlled at an appropriate temperature, and crushed garbage mixed with the garbage moisture adjusting material 9 is decomposed with microbes. In the hermetically sealed container 10, a heater 14a wherein a refrigerant compressed with a compressor 13 is condensed, and air in the hermetically sealed container 10 is heated with the condensation heat, and a condenser 16 wherein the liquified refrigerant is gasified by being jetted from an expansion valve 15, and the air in the hermetically sealed container 10 is cooled with the gasification heat to condense the moisture content in the air, are provided to execute efficiently removal of the moisture content.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a garbage disposal apparatus for fermenting or drying garbage.

[0002]

2. Description of the Related Art In recent years, garbage disposal apparatuses have been widely used even in ordinary households. There are various types of this garbage disposal apparatus, and among them, the type for fermenting the inputted garbage and the type for drying the garbage are widely used.

Here, the following technology has been conventionally proposed as a garbage disposal apparatus of the type for fermenting garbage. FIG. 5 is a sectional view showing a conventional garbage disposal apparatus of a fermentation treatment type.

[0005] As shown in FIG. 5, an upper lid 2 is attached to the upper portion of the apparatus main body 1 so as to be openable and closable. A processing tank 3 for fermenting garbage is installed in the apparatus main body 1, and the processing tank 3 is filled with a garbage water conditioning material 9 for decomposing garbage by fermentation. .

[0005] In the treatment tank 3, a stirring blade 4 for stirring the garbage water conditioning material 9 and the garbage pulverized material is provided.
A sprocket 5a is attached to one end of the rotation shaft of the stirring blade 4, and a chain 5b of the stirring motor 5 is stretched.

A heater 6 is provided at the bottom of the processing tank 3. An exhaust fan 7 is attached to the upper portion of the processing tank 3, and an intake port 8 for introducing air from the outside into the processing tank 3 is formed in a side portion of the apparatus main body 1 in a vertical direction. As a result, the internal air containing water is exhausted, and fresh air is exchanged with a mixture of the high-viscosity garbage crushed material and the garbage water conditioning material 9, and the inside of the processing tank 3 is subjected to aerobic conditions. Is kept.

Further, control means 21 is provided for controlling the operations of the stirring motor 5, the heater 6 and the exhaust fan 7.

[0008] Such a conventional processing tank 3 comprises
It is suitable for household garbage disposal that can perform a fermentation treatment of 1 kg per day.

Next, an outline of the operation of the conventional garbage processing apparatus will be described. When garbage is put into the treatment tank 3,
The stirring blade 4 starts rotating. Thereby, the garbage is mixed with the garbage water conditioning material 9.

Here, microorganisms such as aerobic thermophilic bacteria, mainly Bacillus, inhabit the garbage water conditioning material 9. Such microorganisms have the highest activity around 50 ° C to 65 ° C. Further, in order to provide a water environment suitable for the inhabitation of microorganisms, it is necessary to keep the water content of the mixture including the crushed garbage and the garbage water regulator 9 in the range of 50% to 60%.

Therefore, in the conventional garbage processing apparatus, the processing tank 3 is heated by the heater 6, and the temperature inside the processing tank 3 is aerobicly controlled by the control means 21 in accordance with the temperature detected by a temperature sensor (not shown). 5 suitable for heat microorganisms
Control the temperature around 0 ° C to 65 ° C,
If the water content of the raw garbage itself is high or if the input garbage is not sufficiently drained, evaporate the water and control the internal water content to a state suitable for fermentation. I have. The water evaporated at this time is discharged to the outside by the exhaust fan 7 together with the air in the processing tank 3.

The garbage pulverized material mixed with the garbage water conditioning material 9 in the treatment tank 3 is rapidly decomposed by microorganisms, and changes into water, carbon dioxide, ammonia, other inorganic substances, and hardly decomposable organic residues. . The generated gas component is exhausted by the exhaust fan 7, and compost, which is an organic residue, is generated in the garbage disposal device 4.

[0013]

However, such a conventional garbage disposal apparatus directly discharges high-temperature air of about 50 ° C. to remove water contained in the garbage, which results in a loss of heat energy. Becomes larger. In order to maintain the temperature inside the processing tank 3 at 50 ° C. to 65 ° C., it is necessary to increase the capacity of the heater, which increases the cost of the heater, increases the size of the apparatus, and increases the running cost. In particular, when the outside air temperature is low, such as in winter,
The energy loss is greater and these problems are more pronounced.

Accordingly, an object of the present invention is to provide a garbage processing apparatus capable of removing moisture in a processing tank while suppressing thermal energy loss.

[0015]

In order to solve this problem, a garbage disposal apparatus according to the present invention comprises a processing tank for fermenting or drying garbage, and a hermetic seal surrounding the processing tank and hermetically closing the processing tank. A container, a compressor that compresses the vaporized refrigerant, a heater that condenses the refrigerant compressed by the compressor, and heats the air in the closed container by the heat of condensation, and an expansion that expands the refrigerant liquefied by the heater. A valve, a condenser that vaporizes the refrigerant ejected from the expansion valve, cools the air in the closed container by the heat of vaporization, and condenses at least a part of the water contained in the air to form condensed water. A drain for discharging condensed water to the outside of the closed container; a conduit for circulating the refrigerant discharged from the compressor through a heater, an expansion valve and a condenser so as to return to the compressor; and a heater. The air in the sealed container heated by From the treatment vessel back to the heater through the condenser is one having a blowing means for circulating this.

This eliminates the need to release the exhaust heat to the outside, so that it is possible to remove moisture in the processing tank while suppressing thermal energy loss. In addition, since the moisture contained in the air is condensed at a high temperature in the closed container, it is possible to efficiently remove the moisture.

Further, the garbage disposal apparatus of the present invention comprises a treatment tank for fermenting or drying garbage, a closed vessel surrounding and enclosing the treatment tank, and a compressor for compressing vaporized refrigerant. Condensing the refrigerant compressed by the compressor,
A heater that heats the processing tank by the heat of condensation, an expansion valve that expands the refrigerant liquefied by the heater, and a refrigerant that is ejected from the expansion valve is vaporized to cool the air in the sealed container by the heat of vaporization, A condenser that condenses at least a portion of the water contained in the air to form condensed water, a drain port that discharges the condensed water to the outside of the closed container, and a refrigerant that is delivered from the compressor includes a heater and an expansion valve. And a conduit for circulating it back to the compressor through the condenser, and passing air from the condenser in a closed vessel back to the condenser through the treatment tank heated by the heater. Circulating air blowing means.

Since the garbage is directly heated, the evaporation of the water contained in the garbage is promoted, the amount of water removed is further increased, and the heat energy loss is further suppressed and the running cost is further reduced. be able to.

The garbage disposal apparatus according to the present invention is different from the garbage disposal apparatus described above in that a bypass path for bypassing the refrigerant ejected from the expansion valve and directly leading to the compressor is provided on the bypass path. A heat exchanger that vaporizes the refrigerant ejected from the valve and removes the heat of vaporization from outside the sealed container;
A control valve for controlling the flow rate of the refrigerant flowing in the bypass passage,
A temperature sensor that detects the temperature in the closed container, a moisture content sensor that detects the moisture content of the garbage in the treatment tank, and the operation of the compressor and the opening of the control valve based on signals from the temperature sensor and the moisture content sensor. And a controller for maintaining the inside of the closed vessel at a predetermined temperature range and keeping the garbage at a predetermined moisture content.

As a result, it is possible to optimally control both the temperature in the closed container and the water content of the garbage, thereby enabling more efficient operation and further reducing the running cost.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention comprises a processing tank for fermenting or drying garbage, a closed vessel surrounding and surrounding the processing tank, and A compressor that compresses, a heater that condenses the refrigerant compressed by the compressor, and heats the air in the sealed container with the heat of condensation, an expansion valve that expands the refrigerant liquefied by the heater, and a blowout from the expansion valve The air in the closed container is cooled by the heat of vaporization of the cooled refrigerant, and a condenser that condenses at least a part of the moisture contained in the air to be condensed water, and the condensed water is discharged outside the closed container. A conduit for circulating refrigerant discharged from the compressor through a heater, an expansion valve, and a condenser to return to the compressor;
A garbage disposal device having a blowing means for circulating the air in the sealed container heated by the heater so as to return from the processing tank through the condenser to the heater, and discharges exhaust heat to the outside. Since there is no need, there is an effect that water in the processing tank can be removed while suppressing thermal energy loss. In addition, since the water contained in the air is condensed at a high temperature in the closed container, the water can be efficiently removed.

According to a second aspect of the present invention, there is provided a processing tank for fermenting or drying garbage, a sealed container surrounding the processing tank and hermetically closing the processing tank, and a compressor for compressing a vaporized refrigerant. And condensing the refrigerant compressed by the compressor,
A heater that heats the processing tank by the heat of condensation, an expansion valve that expands the refrigerant liquefied by the heater, and a refrigerant that is ejected from the expansion valve is vaporized to cool the air in the sealed container by the heat of vaporization, A condenser that condenses at least a portion of the water contained in the air to form condensed water, a drain port that discharges the condensed water to the outside of the closed container, and a refrigerant that is delivered from the compressor includes a heater and an expansion valve. And a conduit for circulating it back to the compressor through the condenser, and passing air from the condenser in a closed vessel back to the condenser through the treatment tank heated by the heater. A garbage disposal device having a circulating air blowing means, and the garbage is directly heated, so that the evaporation of water contained in the garbage is promoted, the amount of water removed is further increased, and the heat energy loss is further suppressed. Further increase running costs It has the effect of being able to decrease.

According to a third aspect of the present invention, in accordance with the first or second aspect of the present invention, a temperature sensor for detecting a temperature in the closed vessel, and operation of the compressor is controlled by a signal from the temperature sensor. A garbage disposal apparatus provided with a control unit for keeping the inside of the closed container at a temperature within a predetermined range, and has an effect that the inside of the closed container can be maintained at a temperature suitable for processing garbage.

According to a fourth aspect of the present invention, in the first, second or third aspect of the present invention, a moisture content sensor for detecting the moisture content of garbage in the treatment tank, and A garbage disposal device provided with a control unit for controlling the operation of the compressor by a signal and keeping the garbage in a predetermined range of water content, and keeping the garbage in the treatment tank at a water content suitable for the treatment. Has the effect of being able to

According to a fifth aspect of the present invention, in accordance with the first, second or third aspect of the present invention, a humidity sensor for detecting the humidity in the closed container and an operation of the compressor based on a signal from the humidity sensor are provided. Garbage disposal apparatus provided with a control unit for controlling the inside of the closed container to keep the inside of the closed container at a humidity within a predetermined range, and has an effect that the inside of the closed container can be maintained at a humidity suitable for processing garbage.

According to a sixth aspect of the present invention, in the first or second aspect, a bypass path for bypassing the refrigerant ejected from the expansion valve and leading the refrigerant directly to the compressor is provided.
A heat exchanger installed on this bypass passage, which vaporizes the refrigerant ejected from the expansion valve and removes the heat of vaporization from outside the closed container, a control valve for controlling the flow rate of the refrigerant flowing in the bypass passage, and a closed container A temperature sensor that detects the temperature inside the
A moisture content sensor for detecting the moisture content of the garbage in the treatment tank,
A control unit that controls the operation of the compressor and the opening of the control valve based on signals from the temperature sensor and the moisture content sensor to keep the inside of the closed vessel at a predetermined temperature range and to keep garbage at a moisture content within a predetermined range. It is a garbage disposal device provided, which can optimally control both the temperature in the closed container and the garbage moisture content,
It has the effect that more efficient operation can be performed and the running cost can be further reduced.

According to a seventh aspect of the present invention, in the first or the second aspect of the present invention, there is provided a bypass passage for bypassing the refrigerant flowing from the expansion valve to the condenser and leading to the compressor.
A heat exchanger installed on this bypass passage, which vaporizes the refrigerant ejected from the expansion valve and removes the heat of vaporization from outside the closed container, a control valve for controlling the flow rate of the refrigerant flowing in the bypass passage, and a closed container A temperature sensor that detects the temperature inside the
A humidity sensor that detects the humidity in the closed container, and a control unit that controls the operation of the compressor and the opening of the control valve based on signals from the temperature sensor and the humidity sensor to maintain the inside of the closed container within a predetermined range of temperature and humidity. The garbage disposal device provided has an effect that both the temperature and the humidity in the closed container can be optimally controlled, the operation can be performed more efficiently, and the running cost can be further reduced.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. In these drawings, the same members are denoted by the same reference numerals, and duplicate description is omitted.

(Embodiment 1) FIG. 1 is a sectional view showing a garbage processing apparatus according to an embodiment of the present invention.

As shown in FIG. 1, an upper lid 2 is openably and closably mounted on an upper portion of a closed container 10 which constitutes a part of the apparatus main body 1. The processing tank 3 is installed in a closed container 10 made of a heat insulating material for keeping the inside heat insulated. When the upper lid 2 is opened, garbage is put into the processing tank 3.

The treatment tank 3 is filled with a garbage water conditioning material 9 for mixing with the garbage supplied and decomposing the garbage by fermentation. Sawdust and wood chips are suitable for the garbage water conditioning material 9, and in addition to the action of adjusting the water content in the garbage, the garbage carrier 9 is a microbial carrier for incubating microorganisms for fermentation represented by aerobic thermophilic bacteria. Has an action.

The processing tank 3 is provided with a stirring blade 4 for stirring the raw garbage water conditioning material 9 and the pulverized garbage into a uniform state. The rotating shaft of the stirring blade 4 is rotatably supported by the apparatus main body 1. A sprocket 5a is attached to one end of the rotation shaft of the stirring blade 4, and a stirring motor 5 is attached to the sprocket 5a.
The chain 5b to which the rotational force is transmitted is stretched. Thus, the stirring blade 4 is rotated by the stirring motor 5.

Outside the closed vessel 10, a compressor 13 for compressing the vaporized refrigerant is provided. In the closed container 10, a refrigerant compressed by the compressor 13 is condensed, and the heat of the condensation heats the air in the closed container 10, a heater 14a expands the refrigerant liquefied by the heater 14a. The refrigerant ejected from the valve 15 and the expansion valve 15 is vaporized, and the air in the closed container 10 is cooled by the vaporization heat,
A condenser 16 is provided which condenses at least a part of the water contained in the air to form condensed water. And, these compressor 13, heater 14a, expansion valve 15, condenser 1
6 are sequentially installed on a conduit 17 through which the refrigerant circulates. At the place where the condenser 16 is installed, the condenser 16
A drain port for discharging the water condensed in the above to the outside of the closed container 10 is formed.

The closed container 1 is placed on the bottom of the closed container 10.
Circulating fan (air blowing means) for circulating air inside 0
12 are installed. Then, the air circulated by the circulation fan 12 is heated by the heater 14a and reaches the treatment tank 3, and then passes through the condenser 16 and is again heated by the heater 14a.
The heater 14a and the condenser 16 described above are arranged with respect to the air circulation path so as to provide a return path.

Further, the closed container 10 includes
A temperature sensor 19 for detecting the temperature inside the container, and a water content sensor 20 for detecting the water content of the mixture of the garbage and the garbage water conditioning material 9 in the processing tank 3 are provided in the processing tank 3 in the closed vessel 10. Installed. In such a garbage disposal apparatus, the operation of the compressor 13 is controlled based on signals from the temperature sensor 19 and the water content sensor 20, and the stirring blade 4 for mixing the garbage and the garbage moisture adjusting material 9 is provided. Control means 21 for controlling the operation of the rotating stirring motor 5 is provided.
In addition, in the second and third embodiments described below, instead of the moisture content sensor 20, a humidity sensor for detecting the humidity in the sealed container 10 may be used.

Next, the operation of the garbage processing apparatus according to the present embodiment will be described. First, the user opens the upper lid 2 and puts garbage into the treatment tank 3. When the upper cover 2 is closed, the control means 2 confirms that the garbage has been introduced.
1 and the stirring blade 4 is rotated. The garbage thus input is sufficiently mixed with the garbage moisture adjusting material 9 loaded in the processing tank 3. The driving of the stirring blade 4 is performed not intermittently but intermittently and periodically at a rate of several minutes per hour.

Here, microorganisms such as aerobic thermophilic bacteria mainly belonging to the genus Bacillus inhabit the garbage water conditioning material 9, but the genus Bacillus, which is a representative of the aerobic thermophilic bacterium, is present in the soil. It is a ubiquitous and very common bacterium that greatly contributes to the degradation activity of compost in the early stages of fermentation. There are 50 microorganisms such as Bacillus sp.
It can continue to survive in an environment at a temperature of from 50 ° C to 90 ° C, and has the highest activity around 50 ° C to 65 ° C. And 7
In a temperature range of 0 ° C. or higher, the fermentation decomposition rate is reduced, but insects and the like are not generated in the tank, and weed seeds, viruses, parasites, harmful microorganisms, and the like can be inactivated.

In addition, the treatment tank 3 needs a water environment suitable for its inhabitation on the principle that treatment using microorganisms such as Bacillus bacteria is required. It is necessary to keep the water content of the resulting mixture in the range of 50% to 60%. If the water content is below this range, the water required for the biological activity of the microorganisms will be insufficient, and the fermentation rate will be reduced. On the other hand, if the water content exceeds this range, oxygen to be supplied by stirring will be insufficient, and the inside of the tank will be anaerobic, and anaerobic microorganisms will propagate to generate strong odor. The moisture content is obtained by dividing the amount of water contained in the garbage and the garbage water conditioner 9 by the sum of the dry weight of the garbage and the garbage water conditioner 9 and the water amount.

Therefore, in the garbage disposal apparatus according to the present embodiment, the temperature of the treatment tank 3 sealed in the closed container 10 is set to 50 ° C. to 6 ° C. suitable for aerobic thermophilic microorganisms as described later.
In addition to controlling the temperature to around 5 ° C, if the water content of the raw garbage itself is high or if the raw garbage is insufficiently drained, the water is removed to reduce the internal water content. It is controlled to a state suitable for fermentation.

The high-viscosity garbage crushed material mixed with the garbage water conditioning material 9 in the treatment tank 3 is preferably a Bacillus genus living in the garbage water conditioning material 9 under such an environment. It is rapidly decomposed by microorganisms such as aerobic thermophilic bacteria and changes into water, carbon dioxide, ammonia, other inorganic substances, and hardly decomposable organic residues. Then, the generated gas component is exhausted by the exhaust fan 7. This allows
In the garbage disposal device 4, compost, which is an organic residue stabilized by decomposition, is generated.

Here, a method of controlling the temperature of the processing tank 3 and removing and adjusting the moisture contained in the garbage will be described with reference to FIG. FIG. 2 is a graph showing the relationship between the temperature of the air circulating in the closed container 10 and the water content.

The air guided to the heater 14a by the circulation fan 12 exchanges heat with the refrigerant compressed by the compressor 13 in the heater 14a and is heated to about 70 ° C. (Point A in the figure)
It is released toward.

The air arriving at the treatment tank 3 comes into contact with a mixture of the garbage and the garbage water conditioning material 9 to evaporate and take in the water contained in the garbage, thereby obtaining high-temperature air having a high relative humidity (see FIG. (Point B in the drawing) and floats in the sealed container 10.

The high-temperature air with a high relative humidity is then
It is led to the circulation fan 12 and enters the condenser 16. Condenser 1
At 6, heat exchange occurs with the refrigerant that has been discharged from the expansion valve 15 and cooled by adiabatic expansion, and is gradually cooled to about 20 ° C.

Here, there is no change in the water content of the air until the temperature reaches the temperature (point C in the figure) at which the water content just reaches the saturation state. However, if the temperature continues to decrease even after reaching point C, this air will not be able to contain the original amount of moisture, and some of the moisture will condense. That is, when the temperature becomes equal to or lower than the point C, the water content of the air decreases along the saturated water content curve in the figure. Then, when the temperature drops to about 20 ° C., much of the contained water (width x in the figure) is condensed into low-temperature air with a high relative humidity (point D in the figure), and is sent again to the heater 14a. At this time, the refrigerant is heated and vaporized, and is guided to the compressor 13 again.

By repeating such a cycle of the air in the closed container 10, the water contained in the garbage is gradually removed. And garbage and garbage water preparation material 9
If the water content of the mixture including
The control means 21 stops the operation of the compressor 13 according to the detection signal of the moisture content sensor 20. Further, when the temperature in the closed container 10 decreases to 50 ° C. or less due to the escape of heat from the closed container 10 to the outside air or the like, the control means 21 restarts the operation of the compressor 13 by the detection signal of the temperature sensor 19. Let it.

As described above, according to the garbage processing apparatus of the present embodiment, the air in the closed container 10 surrounding the processing tank 3 is circulated, and the garbage taken in the air heated by the heater 14a. Since the inside water is removed by the condenser 16, there is no need to discharge exhaust heat to the outside. This makes it possible to remove moisture in the processing tank 3 while suppressing thermal energy loss. In addition, the closed container 10
Since the water contained in the air is condensed at a high temperature inside, efficient water removal can be performed.

(Embodiment 2) FIG. 3 is a sectional view showing a garbage processing apparatus according to Embodiment 2 of the present invention.

As shown in FIG. 3, in the present embodiment, instead of the heater 14a (FIG. 1) in the first embodiment, the refrigerant compressed by the compressor 13 is condensed and the heating action is performed by the heat of condensation. Is attached to the bottom surface of the processing tank 3 in close contact.

As described above, the heater 14b may be attached to the processing tank 3 to directly heat the garbage.

If the garbage is directly heated as in this embodiment, the evaporation of the water contained in the garbage is promoted and the amount of water removed is further increased, so that the heat energy loss is further reduced. As a result, the running cost can be further reduced.

(Embodiment 3) FIG. 4 is a sectional view showing a garbage processing apparatus according to Embodiment 3 of the present invention.

As shown in FIG. 4, in the garbage disposal apparatus of this embodiment, the refrigerant flowing from the expansion valve 15 to the condenser 16 is bypassed without passing through the condenser 16 and is directly sent to the compressor 13. A bypass path 22 for guiding is provided. A heat exchanger 23 for vaporizing the refrigerant ejected from the expansion valve 15 and removing heat of vaporization from the outside of the closed vessel 10 is provided on the bypass passage 22. In addition,
At the starting point of the bypass passage 22, a control valve 24 for controlling the flow rate of the refrigerant flowing in the bypass passage 22 is attached.

Next, the operation of the garbage processing apparatus according to the present embodiment will be described. From raw garbage to treatment tank 3
The operations up to the mixing with the garbage water conditioning material 9 and the removal of the water contained in the garbage are the same as those of the garbage processing apparatus in the first embodiment.

Here, the adjustment of the moisture contained in the garbage in the garbage disposal apparatus will be described.

When the moisture contained in the garbage is gradually removed and the water content of the mixture containing the garbage and the garbage water preparation material 9 becomes 60% or less, the control means is controlled by the detection signal of the water content sensor 20. 21 switches the control valve 24 to send the refrigerant ejected from the expansion valve 15 to the heat exchanger 23 through the bypass passage 22 to bypass the condenser 16. As a result, no refrigerant is supplied to the condenser 16, so that the air guided to the circulation fan 12 and entering the condenser 16 is not cooled, and the water does not condense. Therefore, if the amount of water in the circulating air becomes saturated, the water contained in the garbage cannot be evaporated, so that the water content is kept constant. On the other hand, the refrigerant spouted from the expansion valve 15 and cooled by adiabatic expansion exchanges heat in the heat exchanger 23 to cool the surrounding air.

When the temperature in the sealed container 10 is increased to 60 ° C. or higher by heating by the heater 14, the temperature sensor 1
The control means 21 stops the operation of the compressor 13 in response to the detection signal of No. 9, and conversely, if the temperature in the sealed container 10 decreases to 50 ° C. or less due to escape of heat from the sealed container 10 to the outside air, etc. Control means 2 based on the detection signal of sensor 19
1 restarts the operation of the compressor 13.

In the present embodiment, the flow of the refrigerant is completely switched by the control valve 24 by the condenser 16 and the heat exchanger 23, but the refrigerant flow is supplied to both the condenser 16 and the heat exchanger 23. And the ratio may be temporarily changed.

As described above, according to the garbage disposal apparatus of the present embodiment, the bypass passage 22 is provided to transfer the refrigerant to the expansion valve 15.
, And the refrigerant is appropriately bypassed so as not to pass through the condenser 16, so that both the temperature in the closed container 10 and the garbage moisture content can be optimally controlled. . As a result, more efficient operation can be performed, and the running cost can be further reduced.

Further, since the heat exchanger 23 which vaporizes the refrigerant and removes the heat of vaporization from the outside of the closed vessel 10 is provided on the bypass passage 22, the compressor 13 and the stirring motor 5 are provided.
The space outside the sealed container 10 where the temperature rises due to the heat generated by the heat exchanger and the control means 21 becomes thermally severe is cooled by the heat exchanger 23, so that stable operation control can be performed.

The processing tank 3 as shown in Embodiment 2
The heater 14b (FIG. 3) directly attached to the garbage disposal apparatus of the present embodiment can also be applied.

In the first to third embodiments, the processing tank 3
A fermentation treatment method of filling the garbage water conditioning material 9 into the inside and fermenting the garbage using microorganisms is adopted,
A drying treatment method in which garbage is simply dried using a heat source may be employed.

[0063]

As described above, according to the present invention, the air in the closed container surrounding the treatment tank is circulated, and the moisture in the garbage taken into the air heated by the heater is condensed by the condenser. Since the heat is removed, there is no need to release the exhaust heat to the outside. Thereby, an effective effect of being able to remove moisture in the processing tank while suppressing thermal energy loss is obtained.

Further, according to the present invention, since the water contained in the air is condensed at a high temperature in the closed container, an effective effect that it is possible to efficiently remove the water is obtained. .

If a heater is attached to the treatment tank to directly heat the garbage, evaporation of the water contained in the garbage is promoted, and the amount of water removed is further increased. It is possible to obtain an effective effect that the running cost can be further reduced by being suppressed.

By performing control using the temperature sensor,
An effective effect that the inside of the closed container can be kept at a temperature suitable for treating garbage can be obtained.

The control by the water content sensor has an effective effect that the garbage in the processing tank can be maintained at a water content suitable for the processing.

By performing control using the humidity sensor,
An effective effect that the inside of the closed container can be kept at a humidity suitable for treating garbage can be obtained.

If a bypass is provided to guide the refrigerant directly from the expansion valve to the compressor, both the temperature in the closed vessel and the water content of the garbage can be optimally controlled, so that a more efficient operation can be achieved. Thus, an effective effect that the running cost can be further reduced can be obtained.

Further, by installing a heat exchanger on the bypass passage, the space outside the closed vessel, in which the temperature rises due to the heat generated by the compressor and the control unit becomes thermally strict, is cooled, so that stable operation control is achieved. Can be obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a garbage processing apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a graph showing the relationship between the temperature of air circulating in a closed container and the amount of water contained therein.

FIG. 3 is a cross-sectional view illustrating a garbage processing apparatus according to Embodiment 2 of the present invention.

FIG. 4 is a cross-sectional view illustrating a garbage processing apparatus according to Embodiment 3 of the present invention.

5A is a cross-sectional view showing a conventional garbage disposal apparatus, and FIG. 5B is a cross-sectional view taken along a cross section orthogonal to FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 3 Treatment tank 10 Airtight container 12 Circulation fan (blowing means) 13 Compressor 14a Heater 14b Heater 15 Expansion valve 16 Condenser 17 Conduit 18 Drainage port 19 Temperature sensor 20 Moisture sensor 21 Control means 22 Bypass 23 Heat exchange Vessel 24 control valve

Claims (7)

[Claims] 1. A treatment tank for fermenting or drying garbage, a closed vessel surrounding and enclosing the treatment tank, a compressor for compressing a vaporized refrigerant, and a refrigerant compressed by the compressor A heater that heats the air in the closed container by the heat of condensation, an expansion valve that expands the refrigerant liquefied by the heater, and a heat of vaporization that evaporates the refrigerant ejected from the expansion valve. A condenser that cools the air in the closed container by condensing at least a part of the water contained in the air to be condensed water, and a drain port that discharges the condensed water to the outside of the closed container. A conduit for circulating the refrigerant discharged from the compressor through the heater, the expansion valve, and the condenser to return to the compressor; and the closed vessel heated by the heater. The air inside,
A garbage disposal apparatus, comprising: a blast means for circulating the treatment tank from the treatment tank through the condenser to return to the heater. 2. A processing tank for fermenting or drying garbage, a sealed container surrounding and enclosing the processing tank, a compressor for compressing vaporized refrigerant, and a refrigerant compressed by the compressor A condenser that heats the processing tank by the heat of condensation, an expansion valve that expands the refrigerant liquefied by the heater, and a refrigerant that is vaporized from the expansion valve and is sealed by the heat of vaporization. A condenser for cooling the air in the container, condensing at least a part of the water contained in the air to form condensed water, a drain port for discharging the condensed water to the outside of the closed container, A conduit for circulating the discharged refrigerant to return to the compressor through the heater, the expansion valve, and the condenser; and air in the closed container from the condenser, Heated by heater Garbage disposal apparatus; and a blower means for circulating this to through the serial treatment tank returns to the condenser. 3. A temperature sensor for detecting a temperature in the closed container, and a control unit for controlling the operation of the compressor in accordance with a signal from the temperature sensor to maintain the inside of the closed container at a predetermined temperature. The garbage disposal apparatus according to claim 1 or 2, wherein: 4. A moisture content sensor for detecting the moisture content of the garbage in the treatment tank, and controlling the operation of the compressor based on a signal from the moisture content sensor to reduce the garbage to a moisture content within a predetermined range. 4. The garbage disposal apparatus according to claim 1, further comprising a control unit for maintaining the garbage. 5. A humidity sensor for detecting humidity in the closed container, and a control unit for controlling the operation of the compressor in accordance with a signal from the humidity sensor to maintain the inside of the closed container at a predetermined humidity. The garbage disposal apparatus according to claim 1, 2 or 3, wherein: 6. A bypass passage for bypassing the refrigerant ejected from the expansion valve and leading directly to the compressor, and a refrigerant installed on the bypass passage and evaporating the refrigerant ejected from the expansion valve to generate a heat of vaporization. A heat exchanger that deprives the outside of the closed container, a control valve that controls a flow rate of the refrigerant flowing in the bypass passage, a temperature sensor that detects a temperature in the closed container, and a garbage in the processing tank. A moisture content sensor for detecting a moisture content, and controlling the operation of the compressor and the opening of the control valve based on signals from the temperature sensor and the moisture content sensor to keep the inside of the closed vessel at a predetermined temperature. 3. The garbage disposal apparatus according to claim 1, further comprising a control unit for keeping the garbage in a water content within a predetermined range. 7. A bypass passage for bypassing the refrigerant flowing from the expansion valve to the condenser and leading to the compressor, and a refrigerant installed on the bypass passage and vaporizing the refrigerant ejected from the expansion valve to vaporize the refrigerant. A heat exchanger for removing heat from the outside of the closed container; a control valve for controlling a flow rate of the refrigerant flowing in the bypass passage; a temperature sensor for detecting a temperature in the closed container; and a humidity in the closed container. A humidity sensor to be detected, and a control unit that controls the operation of the compressor and the opening degree of the control valve based on signals from the temperature sensor and the humidity sensor to maintain the inside of the closed vessel at a predetermined range of temperature and humidity are provided. The garbage disposal apparatus according to claim 1 or 2, wherein: