JP2000161849A - Drying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce drying time and power consumption by cooling wet air that is obtained by evaporating the water of an object to be dried, condensing water in air and reducing moisture, heating air after reducing moisture, and then circulating the air through the object to be dried. SOLUTION: When kitchen garbage (an object to be dried) is to be thrown and is dried, air in a drying device is heated by air-heating equipment 21 and is sent from a discharge port 30 into a treatment container 5 by an air circulation means 7 for heating the kitchen garbage. As a result, air where steam is mixed is sucked by a dehumidification drying means 2 from a suction port 29, and steam is cooled here and becomes waterdrop and is delivered to a storage bath. In a process of dehumidification and drying by the dehumidification drying means 2, when temperature around air-cooling equipment 22 and the air-heating equipment 21 rises abnormally, the temperature is detected by temperature sensors 9 and 11, a fan 26 is driven for cooling a cooler 25, and surplus heat is unloaded from the drying device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to general households, restaurants,
The present invention relates to a drying device for drying garbage generated from the food industry or the like. The present invention is particularly suitable for application to a drying apparatus for drying food, waste, medicine, clothing (including fibers and the like), and the like.

[0002]

2. Description of the Related Art At present, electric garbage disposal apparatuses are roughly classified into a bio-type, which decomposes garbage using microorganisms, and a dry-type, which heats garbage using a heater or microwave to dry it. There is. The bio-type garbage disposal system puts microorganisms that have inhabited in sawdust etc. into a processing vessel, and uses a stirrer or heater to maintain the environment (water, temperature, oxygen) where the microorganisms are easily active, By adding an appropriate amount of garbage, microorganisms can decompose garbage. On the other hand, an electric garbage disposal device is a system in which garbage is put into a processing container and air (warm air) heated by a heater or the like.
The garbage is heated by applying the garbage to the garbage to evaporate the moisture of the garbage, and the steam is exhausted to the outside of the apparatus together with the warm air to dry the garbage. Further, there is a method of irradiating garbage with microwaves, directly heating and evaporating water in the garbage, and drying the garbage by exhausting steam out of the apparatus using a fan or a vacuum pump.

[0003]

However, the above-mentioned bio-type and dry-type garbage processing apparatuses have the following problems and problems.

[0004] First, in the bio-type, the environment (moisture, moisture, etc.) in the device is set so that microorganisms can be actively activated.
(Temperature, oxygen) must be maintained properly and the appropriate amount of garbage, which feeds on microorganisms, must be regularly injected. Therefore, if the amount of input garbage is extremely different from the appropriate amount, such as days when there is no garbage, days when there is little garbage, and days where there is a lot of garbage, the habitat of microorganisms will be disrupted, Processing capacity decreases, and eventually microorganisms can no longer inhabit,
You may not be able to process garbage. In addition, since odors are generated when microorganisms decompose garbage, the processing device cannot be installed indoors unless an appropriate deodorizing device is provided. Furthermore, sawdust and the like necessary for inhabiting microorganisms must be replaced periodically, and depending on the type of garbage, it may not be possible to treat it. As described above, the bio-type garbage processing apparatus has a problem in that there are many restrictions on how to use the garbage processing apparatus, and the usability is poor. In addition, heat energy for evaporating water from garbage is not sufficient for fermentation heat alone, and needs to be supplemented by an electric heater. In view of the power consumption per day, power that is close to that of a single dry method is required.

On the other hand, in the dry type, it is not necessary to administer microorganisms to the garbage, and the garbage can be basically processed only by electricity. However, all the heat energy for evaporating the water of the garbage is supplied by a heater or a microwave. Must be given to garbage using In the case of a heater, electric energy is converted into heat, and heat is applied to the garbage by transferring the heat from the heater on the high-temperature side to the garbage on the low-temperature side via air. In the case of microwaves, the electric energy is converted into high frequency (microwave), and the high frequency is applied to the garbage, causing water molecules in the garbage to vibrate and causing friction in the garbage to generate heat in the water in the garbage. Let me. In any case, since there is a conversion efficiency of electric energy, a heat loss at the time of heat transfer, a loss at the time of generating a high frequency, and the like, electric energy more than energy necessary for evaporating water in garbage is required. As described above, energy conversion efficiency, loss of heat and radio waves, and the like greatly affect garbage disposal costs (electricity costs). How to reduce power consumption is a problem of the dry type.

[0006] In the drying method, since the odor of the garbage is contained in the steam generated by heating the garbage, the odor is simultaneously exhausted when the steam is exhausted. When the device is installed indoors, measures to prevent odors are also an issue. A drying device that combines a microwave generator and a heat pump to reduce drying time and power consumption has been proposed, but it is necessary to consider a more specific configuration, and there is room for improvement. .

An object of the present invention is to provide a drying apparatus which has a low processing cost and a short drying time. Another object of the present invention is to provide a drying apparatus with less odor. Still another object of the present invention is to provide an easy-to-use drying device which can easily put and dispose of garbage. Still another object of the present invention is to provide a drying apparatus capable of controlling the drying of an object to be dried.

[0008]

In order to achieve the object of the present invention, a drying apparatus according to the present invention comprises a processing container for holding a material to be dried, and means for stirring the dried material provided in the processing container. A means for cooling humid air obtained by evaporating the moisture of the material to be dried, a means for condensing and dehumidifying moisture contained in the air, and a dehumidifying and drying means having means for heating the dehumidified air; Air circulation means for circulating air between the processing container and the dehumidifying and drying means, and circulating heated air through the object to be dried, and other heating means for directly heating the object to be dried. ing. The drying device further includes an air cooling unit that cools the circulating air when the temperature of the circulating air passing through the dehumidifying and drying unit exceeds a predetermined value. It is preferable to use a microwave generating means as another heating means.

In order to achieve the object of the present invention, a drying apparatus according to the present invention comprises a temperature sensor provided on the input / output side of the dehumidifying / drying means, and a humidity sensor provided on the input / output side of the dehumidifying / drying means. The driving of the air cooling means is controlled by the output of the temperature sensor, and the drying of the object to be heated is terminated by the outputs of the temperature sensor and the humidity sensor.

[0010] In an embodiment of the present invention, there is further provided a storage container connected to the drain of the sink for storing the object to be dried.
A crushing means provided in the storage container for crushing the material to be dried;
Transfer means for transferring the pulverized material to be dried from the storage container to the processing container. It is preferable that the drying device further includes a discharge unit for discharging the dried material to be dried out of the processing container, and a storage unit for storing the discharged dried material.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below with reference to the drawings by using some embodiments.

[0012]

FIG. 1 is a plan view of an internal structure showing an embodiment of a drying apparatus according to the present invention. The garbage drying apparatus shown in FIG. 1 mainly includes a microwave generating unit 1 and a dehumidifying and drying unit 2.
, Drying processing tank 3, duct 4, processing vessel 5, stirring means 6, air circulation means 7, air cooling means 8, temperature sensors 9, 11, humidity sensors 10, 12, control means. 13.

First, the configuration and operation of each means will be described. The microwave generation means 1 uses a magnetron or a klystron generally used in a household microwave oven, etc., and generates microwaves to dielectrically heat the water in the garbage, thereby rapidly increasing the temperature of the garbage. At the same time, the moisture of the garbage is exuded to the surface of the garbage. As a result, rapid drying can be expected even during the reduced drying period at the end of drying. Further, rapid heating by microwaves can soften the garbage, becomes effective pulverizing means in combination with the stirring means 6, and can improve drying efficiency.

In particular, in a household garbage drying apparatus, when a magnetron used in a household microwave oven is diverted, the output may be too high. In such a case, the current flowing through the inverter or the magnetron must be controlled. By
Generate microwaves with lower power than normal power. In this case, the effect of suppressing damage to the magnetron and extending the life of the magnetron can also be obtained.

The dehumidifying and drying means 2 is means for drying the humid air in the processing vessel 5 in order to increase the efficiency of the drying process. The dehumidifying and drying means 2 includes an air heater 21, an air cooler 22, and a compressor 23.
Expansion valve 24 including a capillary tube, and radiator 2
5, a pipe connecting each of the devices, and a refrigerant flowing through each device and the pipe. Briefly describing the flow of the refrigerant, the refrigerant is compressed by the compressor 23, becomes a high-temperature and high-pressure gas, flows to the air heater 21, and exchanges heat between the air heater 21 and the circulating air flowing in the garbage drying device. It becomes a high temperature and high pressure liquid. Next, the refrigerant enters the expansion valve and becomes a low-temperature and low-pressure liquid and flows to the air cooler 22, where heat is exchanged between the air cooler 22 and the circulating air flowing in the garbage drying apparatus to become a low-temperature and low-pressure gas. And enters the compressor 23 again. Thus, the refrigerant circulates through each device to form a refrigeration cycle. That is, the dehumidifying / drying means 2 is a so-called heat pump, in which the circulating air is cooled by the air cooler 22, and the moisture in the air is discharged to the storage tank 15 as water droplets, thereby dehumidifying the air. Heat at 21. As this heat pump, electronic cooling using a Peltier element can be considered in addition to the refrigeration cycle using the above-described refrigerant. In the current technology, the COP (coefficient of performance: Coefficie) is larger in the refrigeration cycle than in the electronic cooling.
nt Performance) can be obtained, and the power consumption of the apparatus can be reduced. However, it is expected that electronic cooling will progress in the future because no refrigerant such as chlorofluorocarbon is used and no noise is generated.

By properly operating the microwave generating means 1 and the dehumidifying and drying means 2 in combination, it is possible to dry the garbage almost without burning. In addition, since garbage consumes very little energy, RD
It becomes possible to produce a dried material suitable for F conversion, that is, for conversion to solid fuel or composting. In addition, since the treatment is performed at a relatively low temperature, the outside of the apparatus does not become hot, the energy loss is small, and there is an advantage that a burn is not caused even if a person touches the apparatus. Furthermore, even when the lid is opened, the temperature of the dried product is low (about 40 degrees in the embodiment of the present invention), so that the odor is not strong. Further, since the air is circulating inside the apparatus, no odor is emitted to the outside during the operation of the apparatus. Since the moisture in the air is discharged as water droplets by the air cooler 22, there is a feature that the humidity in the room is not increased by the steam.

The drying tank 3 includes a microwave shielding container 31.
And the draw-out mechanism 32, and the microwave generating means 1
Without leaking the microwave generated from the outside,
In addition, it has a closed structure to prevent leakage of steam and odor generated during drying. The microwave generated from the microwave generating means 1 is guided to a microwave irradiation port 28 through a waveguide 27. The microwave shielding container 31 is made of a metal that reflects microwaves, and has a microwave irradiation port 28, a circulating air suction port 29 and a blowout port 30 that are connected to the duct 4. The inlet 29 and the outlet 30 have a mesh structure such as a perforated metal for ventilating circulating air without microwave leakage. The draw-out mechanism 32 is configured to draw out one side surface of the microwave shielding container 31. On the outer periphery of the drawer mechanism 32, the drying treatment tank 3 is provided with a sealing material (such as an O-ring) for sealing water vapor and odor when the drawer mechanism 32 is closed, and prevents microwaves from leaking outside. Chalk structure is incorporated.

The duct 4 is a ventilation passage extending from the inlet 29 of the drying tank 3 to the outlet 30. In addition, the air heater 21, the air cooler 22, and the air circulation means 7 of the dehumidifying and drying means 2 are incorporated in the duct 4.

The processing container 5 is a cylindrical or rectangular container having a bottom 51 provided with a large number of fine ventilation holes through which air can pass, and a bottom 51 provided below the bottom.
A ventilable filter 52 is provided to collect any garbage that may spill out of the vents during processing. Further, the processing container 5 is attached to a drawer mechanism of the drying processing tank 3. By pulling out the drawer mechanism 32, the opening of the processing container 5 comes out of the apparatus, so that garbage can be easily put in. Further, the processing container 5 includes a handle 3.
Since the processing container 3 can be easily removed from the drying device by attaching the processing container 3, it is easy to discard the dried refuse after the processing, and the processing container 5 is also easy to clean.

The stirrer 6 is used to pulverize the inputted garbage and to stir periodically during operation of the apparatus in order to prevent local heating of microwaves and uneven heating due to the contact with dry air. It is. It is composed of a stirring blade, a motor for rotating the blade, and a speed reducer for obtaining the high torque required for garbage crushing. In addition, when garbage is crushed, the garbage is sufficiently heated by microwave before stirring, and then the stirring means 6 is driven, so that the hard garbage is softened, and the garbage can be easily crushed. Become.

The air circulating means 7 is a moisture-proof fan and is used for circulating air in the apparatus. If the amount of air circulation is insufficient, the fan air volume may be increased. However, by adding fans before and after the intake port 29, it becomes possible to smoothly circulate indoor air.

The air cooling means 8 includes a radiator 25 and a fan 2.
6, and serves to discharge unnecessary heat energy in the apparatus to the outside of the apparatus. This method of heat exchange is disclosed in
As described in Japanese Patent Application Publication No. 178522, a method of exchanging heat between circulating air and air outside the apparatus by using a high heat conductor such as a heat pipe, and a method of partially disposing the air heater 21 of the dehumidifying and drying means 2 to a radiator 25 There is a method of taking out the excess energy of the air heater 21 out of the system and cooling it out of the system. In the present apparatus, by controlling the fan 26 to be driven when the temperature of the air heater 21 exceeds a certain value, the heat exchange capacity can be improved and necessary heat can be discharged.

The temperature sensors 9 and 11 are installed on the surface of the piping of the dehumidifying and drying means 2 and on the space on the input / output side of the circulating air passing through the dehumidifying and drying means 2, and measure the temperature and temperature difference of the circulating air. The result is taken into the control means 13, and efficient automatic control can be performed.

The humidity sensors 10 and 12 are provided with the dehumidifying and drying means 2.
It is installed in the space on the input / output side of the circulating air passing through it and measures the relative humidity. By measuring the degree of dehumidification together with the measurement results and the measurement results of the temperature sensors 9 and 11, and determining that the degree of dehumidification falls below a predetermined value, it is possible to perform automatic control of the apparatus.

The control means 13 takes in signals from the temperature sensors 9 and 11 and humidity sensors 10 and 12 and a device operation signal / stop signal from a device driver, and performs automatic operation of the device. These temperature sensors 9 and 11 and humidity sensor 1
0 and 12 are based on the control method and the material to be dried such as garbage.
In some cases, one of them can be omitted.

The worktop 14 is provided for cooking and placing items on the drying device. For example, FIG.
By integrating it with the system kitchen as shown in (1), usability and aesthetics can be improved.

The storage tank 15 is for temporarily storing waste water, so that the drying device can be installed at an arbitrary place or can be made movable. However, by directly incorporating the wastewater into the sewage without storing the wastewater, the trouble of drainage can be saved, and the garbage containing a little water can be drained in the apparatus. Accordingly, it is not necessary to drain the garbage using the triangle corner of the sink provided in the conventional bio-type or dry-type garbage processing apparatus, and the sink becomes clean. For example, it becomes possible to discard the miso soup as it is. In this case, depending on how the apparatus is used, it is conceivable to incorporate control such as starting the drying step after a certain time has elapsed after pressing the drying start button. For example, the detection criterion is detection of moisture in the interior, elapse of a certain time since the lid was closed, and the like.

Hereinafter, the process from the input of garbage (substance to be dried) into the drying apparatus shown in FIG. 1 to the end of drying will be described. When the switch of the drying device (see FIG. 3) is turned on,
The air in the drying device is heated by the air heater 21,
The air is supplied from the air outlet 30 into the processing container 5 by the air circulation means 7 to heat the garbage (dry matter). The air mixed with water vapor by heating the garbage is supplied to the inlet 2
9 is sucked into the dehumidifying and drying means 2. The air containing the water vapor is cooled by the air cooler 22, and the water vapor is discharged to the storage tank as water droplets. The air from which the water vapor has been removed is heated when passing through the air heater 21 and flows into the processing vessel 5 again from the outlet 30. In the process of circulating the air, the garbage is appropriately stirred by the stirring means 6 provided in the processing container 5, and uneven heating of the garbage is prevented. In the process of dehumidifying and drying by the dehumidifying and drying means 2,
If the temperature around the air cooler 22 and the air heater 21 rises more than necessary, the temperature is detected by the temperature sensors 9 and 11, and the fan 26 is driven to cool the radiator 25 to remove excess heat. Discharge outside the dryer. Dehumidifying and drying means 2
When the dehumidification of the garbage is promoted, the surface of the garbage is dry, but the interior still contains moisture. In this case, when microwaves are applied to the garbage from the microwave generation means 1, moisture seeps out onto the surface of the garbage, and the dehumidifying operation is promoted again. Further, by irradiating the microwave, the garbage can be effectively pulverized by operating the stirring means 6 when the surface of the garbage becomes soft. This is effective even if it is performed immediately after the start of drying, because energy required for driving the heat pump is supplied. The temperature sensors 9 and 11 and the humidity sensors 10 and 12 measure the dehumidification status in the circulating air. When the degree of dehumidification reaches a predetermined value, it is determined that the garbage has been dried and the operation of the drying device is performed. Stop.

As described above, the garbage charged in the processing container 5 is stirred and pulverized by the stirring means 6 while
Drying of garbage is promoted by controlling the microwave generating means 1 and the dehumidifying / drying means 2 by the control means 13 in which the temperature sensors 9 and 11 and the humidity sensors 10 and 12 are combined. By repeating the above cycle, drying of the garbage is completed.

In the present embodiment, the garbage is heated and dehumidified by the dehumidifying and drying means 2, and the moisture in the garbage is exuded on the surface by the microwaves from the microwave generating means 1. Since the garbage is agitated and pulverized by the agitating means 6, the drying time can be reduced and the power consumption can be reduced. Further, in this embodiment, when a crusher for crushing garbage is provided in advance at the time of putting garbage, drying efficiency can be further improved. Further, by using a heating means such as an infrared heater or an IH heater instead of the microwave generation means 1, the configuration of the drying apparatus can be greatly simplified. However, in order to obtain the same drying speed as that of the microwave, a heater that requires more power than the microwave output is required. Further, as a means for improving the thermal efficiency of the present drying device, by providing a latent heat storage agent capable of storing thermal energy in the air cooling means 8, the thermal efficiency can be improved.
In particular, in a large-sized drying processing apparatus, the system can be used efficiently if the waste heat of the air cooling means 8 is used directly or via a latent heat storage agent as a heat source for composting garbage. Can be effectively promoted.

Next, another embodiment of the present invention will be described with reference to FIG. FIG. 2 is a plan view of the internal structure showing another embodiment of the drying apparatus according to the present invention. In the embodiment shown in FIG. 1, an operation of putting garbage into the processing container 5 is required. Also,
Stirring of the garbage by the stirring means 6 is performed in a state where water is drained to some extent. Further, the drying by the microwave generating means 1 and the dehumidifying and drying means 2 is performed as it is in the processing container into which the garbage is put.

On the other hand, in the embodiment shown in FIG. 2, it is assumed that it is installed under the sink of the kitchen. For this reason, a storage bin 115 for garbage is provided, and a drainage ditch at the center of the sink is connected to the input port 100 of the storage container 115 of the drying device, and the input garbage is automatically transferred from the input port 100 to the storage container. 115. Here the garbage is stored with the water. The overflowing water is supplied to a punching plate 107 provided above the input port 100 of the storage container 115.
From below into the sewage 111, and a trap 110 is provided to prevent backflow.

When the apparatus is driven, a cutter 101 having a structure similar to that of a juicer is driven by a cutter drive motor 102 to pulverize garbage in water. Just like juicers, vegetables can be easily crushed underwater.
By opening the input valve 103 of the storage container 115, the garbage crushed here flows into the punching plate 108 in the processing container 5 and is drained. So stirrer 1
At 06, the garbage is dried by the microwave generating means 1 and the dehumidifying and drying means 2 while appropriately stirring. In the present embodiment, a high heat conductor such as a heat pipe is used as the air cooling means 8, and heat is exchanged between circulating air and air outside the apparatus.
In the embodiment of FIG. 2, a cooling fan 81 is provided to increase the cooling efficiency in the apparatus, and cools the outside of the heat exchanger.

After the drying is completed, the dry matter discharging motor 1
05 is driven, the discharge valve 104 is opened, and the agitator 106 is driven to discharge the dried product to the dried product tray 112. Note that the drain water is filtered by the filter 109 and the backflow prevention trap 110.
, And is discharged to the sewage 111. Therefore, by using the drying apparatus of the present embodiment, the input of the garbage becomes easier as compared with the drying apparatus shown in FIG. 1, and the usability can be improved. In addition, crushing of garbage becomes easy.

Another embodiment of the drying apparatus according to the present invention will be described with reference to FIG. FIG. 3 is a perspective view showing one embodiment when the drying apparatus of FIG. 1 is incorporated in a system kitchen. In the figure, a drying device 120 is inserted into a gap in a system kitchen or a cooking table, and drains waste water into a sink 12.
3 Directly connected to the sewer pipe below. Since the input and the output of the garbage are performed from the drawer mechanism 32 on the front of the apparatus, the integrated worktop 14 can be used at the upper part. The operation of the apparatus is performed by the switch 121.

With this configuration, the processing container 5 can be pulled out by the handle 33.
The garbage can be easily put in and the objects can be placed on the worktop 14, so that the space can be effectively used.

As described above, the drying apparatus according to the present invention reduces the processing cost and shortens the drying time by properly using the microwave generating means, the dehumidifying drying means, and the stirring means according to the drying conditions. can do. Since the drying device according to the present invention is dried at a low temperature, it is possible to reduce the odor. In addition, the drying apparatus according to the present invention can be easily disposed of because the drying tank can be drawn out, a storage container for garbage can be provided, and garbage can be discharged directly from the sink to the processing container. , Easy to use. As described above, in the present invention, the processing container for storing the garbage is separated from the drying processing tank, so that the loading / unloading of the dried product, the cleaning of the processing container is facilitated, and the garbage is dried by stirring. By controlling the apparatus using the measurement result of the temperature of the heat exchanger of the heat pump or the temperature of the circulating air or the measurement result of the humidity of the circulating air, efficient automatic operation becomes possible.

In the description of the embodiments of the present invention, drying of garbage is described. However, the present invention is not necessarily limited to garbage, and other wastes, foods, chemicals, fibers, and other drying can be used. It can be used for any required dry matter.

[0039]

According to the present invention, it is possible to provide a quick-drying and low-power consumption compatible garbage drying apparatus which is easy to use.

[Brief description of the drawings]

FIG. 1 is a plan view of an internal structure showing an embodiment of a drying device according to the present invention.

FIG. 2 is a plan view of an internal structure showing another embodiment of the drying apparatus according to the present invention.

FIG. 3 is a perspective view showing one embodiment when the drying apparatus of FIG. 1 is incorporated in a system kitchen.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Microwave generation means, 2 ... Dehumidification drying means, 3 ... Drying processing tank, 4 ... Duct, 5 ... Processing container, 6 ... Stirring means, 7
... air circulation means, 8 ... air cooling means, 9, 11 ... temperature sensor, 10, 12 ... humidity sensor, 13 ... control means, 14
... worktop, 15 ... storage tank, 21 ... air heater, 2
2 ... air cooler, 23 ... compressor, 24 ... expansion valve, 25 ...
Radiator, 26 ... fan, 31 ... microwave shielding container, 3
2. Drawer mechanism, 51 ... Bottom, 52 ... Filter, 81
... Cooling fan, 100 ... Inlet, 101 ... Cutter, 1
02: cutter driving motor, 103: closing valve, 104:
Discharge valve, 105: Dried product discharge motor, 106: Stirrer, 107: Punching plate, 108: Punching plate, 109: Filter, 110: Backflow prevention trap, 111: Sewage, 112: Dried product tray, 120 ...
Drying device, 121: switch, 123: sink.

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Kazumasa Okamura 216 Totsukacho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside the Space Technology Development Headquarters, Hitachi, Ltd. (72) Kenichi Kasaba Totsuka-ku, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture 216-cho, Hitachi Ltd. Space Technology Development Headquarters F-term (reference) 3L113 AA07 AB03 AC10 AC21 AC25 AC58 BA39 CA08 CA09 CB06 DA06 DA10

Claims (6)

[Claims] 1. A processing container for holding a material to be dried, means for stirring the dried material provided in the processing container, and cooling the moist air obtained by evaporating the moisture of the material to be dried, Dehumidifying and drying means having means for condensing and dehumidifying the water contained therein and means for heating the dehumidified air, and circulating air between the processing container and the dehumidifying and drying means, A drying apparatus, comprising: an air circulating unit for circulating the air passed through the object to be dried; and another heating unit for directly heating the object to be dried. 2. The drying apparatus according to claim 1, further comprising: air cooling means for cooling the circulating air when the temperature of the circulating air passing through the dehumidifying and drying means exceeds a predetermined value. The drying device, wherein the other heating means is a microwave generating means. 3. The drying device according to claim 2, wherein a temperature sensor provided on an input / output side of said dehumidifying / drying means, a humidity sensor provided on an input / output side of said dehumidifying / drying means, A drying apparatus, comprising: means for controlling the driving of the air cooling means based on an output; and means for ending drying of the object to be heated based on the outputs of the temperature sensor and the humidity sensor. 4. The drying device according to claim 1, wherein the storage container is connected to a drain of the sink, and stores the material to be dried.
A garbage drying apparatus, comprising: a crushing unit provided in the storage container for crushing the object to be dried; and a transfer unit for transferring the crushed object to be dried from the storage container to the processing container. . 5. The drying apparatus according to claim 4, further comprising a discharging means for discharging the dried material to be dried out of the processing container, and a storing means for storing the discharged dried material. . 6. A drying apparatus according to claim 1, wherein a suction port of said dehumidifying means is provided in a flow path of air flowing from said processing container to said dehumidifying and drying means, and is provided at one of front and rear sides of said suction port. A drying device comprising a fan.