JPH10258200A - Dryer - Google Patents

Abstract

(57) [PROBLEMS] To continuously extract and remove moisture evaporated from clothing under a predetermined low pressure state such as a substantially vacuum state by a moisture removing means which functions sufficiently even under the same low pressure state. It is an object of the present invention to provide a dryer capable of continuing the evaporating action without intermittent blowing and degassing as described above, and realizing sufficient drying in a short time. SOLUTION: In the dryer according to the present invention, a container to be dried capable of maintaining a reduced pressure state below the atmospheric pressure, a deaeration means for discharging air from the container to be dried, and the container to be dried And a water removing means for continuously extracting and removing the evaporated water in the inside. Therefore, in the case of this configuration, the saturated water vapor pressure of the moisture in the object to be dried with respect to the external environment is relatively increased, and the water is easily evaporated. Then, the efficiently evaporated water is extracted and removed continuously and efficiently by the moisture removing means, and sufficient drying is continued to the end. Therefore, the drying time can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a dryer for drying clothes and the like.

[0002]

2. Description of the Related Art Clothes dryers for drying clothes and the like are already widely used in homes, including coin launderettes.

[0003] The structure of a clothes dryer that has been widely used in the past is provided inside a container with a lid that can be opened and closed.
A rotating drum designed to hold wet clothing,
The rotary drum is constituted by a fan for introducing dry air from outside and a heater for heating the air introduced by the fan.

[0004] In the conventional clothes dryer having such a configuration, the temperature of the water in the clothes blown by the hot air while being stirred by the rotary drum rises and evaporates, and is sequentially sent by the fan. The drying action proceeds by being discharged to the outside. The purpose of heating the clothes with the warm air from the heater is to increase the saturated vapor pressure of the moisture in the clothes to promote the evaporation, and to rotate and stir by the rotary drum, the respective parts of the clothes are stirred. This is to promote the rapid diffusion of moisture to the surroundings.

[0005] By such a drying method, clothes can be dried in a much shorter time than a drying method by natural drying.

[0006] However, in this conventional general dryer, it is necessary to heat and stir the clothes, so that the heat of the hot air causes the fiber to deteriorate or discolor, or the clothes to be damaged by friction during stirring. There is.

For this reason, the temperature of the hot air (introduced air) heated by the heater can be raised only to about 100 ° C., and there is a limit in shortening the drying time. In addition, it is easily affected by the temperature and humidity of the outside air,
This also has the disadvantage that the drying time varies considerably.

Therefore, recently, for example, Japanese Patent Laid-Open No.
As shown in Japanese Patent No. 9400, while the drying container in which the object to be dried such as clothing is put in a structure having high pressure resistance so as to withstand a vacuum state, a vacuum pump is added. By degassing the air in the container, a low-pressure environment below the atmospheric pressure with respect to the moisture in the clothes is formed, and the saturated water vapor pressure of the moisture in the object to be dried, such as clothes, is relatively increased, making it easier to evaporate. A method has been proposed in which the drying efficiency is improved by reducing the drying time.

According to the dryer having such a configuration, the efficiency of evaporating water in the object to be dried such as clothing is increased, and the temperature of the hot air does not need to be so high. It is also possible to prevent the dried object having low heat resistance from being damaged.

[0010]

However, in the case of this conventional dryer, although the evaporation efficiency of water from the object to be dried is certainly improved, it is difficult to continuously discharge the water once evaporated. After a lapse of a predetermined time from the start of the operation, the container is filled with steam, and there is a problem that the evaporation efficiency decreases. Therefore, unless the air is intermittently blown and degassed, it is impossible to sufficiently dry the object to be dried. As a result, there is a problem that the drying time cannot always be reduced effectively.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and it is intended to remove moisture evaporated from clothes under a predetermined low pressure state such as a substantially vacuum state so as to function sufficiently even under the low pressure state. By continuously extracting and removing by means, it is possible to continue the evaporating action without intermittent ventilation and degassing as in the past, and to realize a dryer that can realize sufficient drying in a short time. It is intended to provide.

[0012]

Means for Solving the Problems Each of the inventions of the present application is provided with the following means for solving the problems in order to achieve the object.

That is, first, in the dryer according to the first aspect of the present invention, a container to be dried that can maintain a reduced pressure below the atmospheric pressure, and a deaeration means for discharging air from the container to be dried. And a water removing means for continuously extracting and removing the evaporated water in the container to be dried.

Therefore, in the case of this configuration, the saturated water vapor pressure of the moisture in the material to be dried relative to the external environment rises relatively,
It is easy to evaporate. Then, the efficiently evaporated water is extracted and removed continuously and efficiently by the moisture removing means, and sufficient drying is continued to the end. Therefore, the drying time can be reduced.

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the object to be dried in the container for storing the object to be dried is further heated, and the saturated steam of moisture in the object to be dried is further heated. A heating means for increasing the pressure is added, thereby effectively increasing the saturated water vapor pressure itself of the moisture in the object to be dried, and promoting a more efficient moisture evaporating action.

According to the third aspect of the present invention, the water removing means in the configuration of the first aspect of the present invention continuously removes the evaporated moisture in the container for storing the object to be dried by cooling and condensing it. Constituted by cooling means,
The evaporated water is converted to water droplets and efficiently taken out.

According to a fourth aspect of the present invention, the water removing means in the structure of the first aspect of the present invention is constituted by a moisture adsorbing means for removing evaporative moisture in the container for storing the material to be dried. Then, the evaporated water is adsorbed and removed.

According to the fifth aspect of the present invention, in the second aspect,
The heating means in the structure of the invention according to claim 1 is configured to heat by utilizing the exhaust heat from the cooling means in the structure of the invention according to claim 1. The heating means in the configuration is configured to heat using the exhaust heat from the degassing means in the configuration of the first aspect of the present invention, and the saturation of the moisture in the object to be dried is effectively performed by utilizing the exhaust heat amount. Increase steam pressure.

Further, in the invention of claim 7, the heating means in the constitution of claim 2 is constituted by electromagnetic heating means, and the electromagnetic heating means effectively heats only water molecules in the object to be dried. Increase the saturated steam pressure.

According to the invention of claim 8, in the above-mentioned claim 2,
The heating means in the structure of the invention according to the invention is constituted by an ultrasonic vibration heating means, which vibrates the material to be dried to facilitate evaporation of water, and vibrates and heats water molecules in the material to be dried to increase the saturated steam pressure.

According to the ninth aspect of the present invention, the third aspect of the present invention is provided.
The cooling means of the invention is compact as a dedicated one, and in the invention of the tenth aspect, the cooling means of the invention of the third aspect is also used for other refrigerators at a low cost.
Each is configured.

[0022]

As a result, according to the above-described results, according to the dryers of the present invention, high-efficiency drying can be performed without requiring hot air heating by a heater or the like and intermittent blowing and deaeration. For example, sufficient drying can be performed in a short time without damaging a low heat-resistant dried object such as clothing made of chemical fiber. As a result, it becomes suitable for drying various objects to be dried which are vulnerable to heat other than clothes.

[0023]

1 to 4 show a configuration of a dryer according to an embodiment of the present invention which is configured as, for example, a clothes dryer.

In the drawing, reference numeral 1 denotes a clothing container having a pressure-resistant structure capable of maintaining a predetermined low pressure state below the atmospheric pressure, for example, a substantially vacuum state of about 10 ^-2 to 10 ^-1 Torr. Are provided with a plurality of clothes shelves 2a to 2e at predetermined intervals in the vertical direction.

A degassing pipe 3a of a vacuum pump 3, which is a degassing means, is connected to a lower portion of the clothing container 1. An opening / closing valve 4 is provided in the deaeration pipe 3a, and when the vacuum pump 3 is driven for a predetermined time to deaerate and decompress the inside of the clothing container 1 to the substantially vacuum state described above, at that time, By closing the open / close valve 4, the inside of the clothes container 1 is maintained in the substantially vacuum state.

Further, a concave portion 10 for collecting condensed water as shown in detail in FIG. 2, for example, is formed in the center of the bottom 1a of the clothes container 1, and the bottom 10a has a structure as shown in the drawing. Of cooling units 5 are provided. The cooling unit 5 includes a heat exchanger 5a located at the bottom 10a of the recess 10 and cooling fins 5b integrated above the heat exchanger 5a to radiatively cool the inside of the clothes container 1.
And radiating fins 5c that are integrated below the heat exchanger 5a and that release the recovered heat in the clothing container 1 cooled and recovered through the heat exchanger 5a to the outside, Cooling refrigerant from a refrigerating device 6 having a refrigerating circuit is circulated through the heat exchanger 5a. The cooling fin 5b has, for example, a wave-shaped flat fin structure as shown in FIG. A drain pipe 7 for discharging condensed water is led out of the concave portion 10 of the bottom portion 1a of the clothes container 1 and communicates with a drain pan 9 for storing condensed water provided outside the concave portion 10.

The shape and structure of the cooling fin 5b are not limited to the above-mentioned wave-shaped flat fin structure, but may be a donut-shaped inclined plate structure as shown in FIG.

Next, the operation of the clothes dryer configured as described above will be described.

Now, for example, in the above configuration, various types of wet clothes 8a to 8e after washing, for example, are placed on the clothes racks 2a to 2e in the clothes container 1 as shown in the figure.

Then, the vacuum pump 3 is driven to evacuate and decompress the interior of the garment container 1 to a substantially vacuum state of about 10 ^-2 to 10 ^-1 Torr, and the on-off valve 3a is closed. As a result, the saturated water vapor pressure of the water in the clothes increases, and the external diffusion resistance decreases, so that the water evaporates efficiently. By driving the refrigerating device 6 in conjunction with the driving of the vacuum pump 3, the inside of the clothes container 1 is cooled via the heat exchanger 5a and the cooling fins 5b, and the recovered heat is dissipated to the radiation fins 5c. By radiating heat to the outside through the garment, the evaporated water evaporated from the clothes 8a to 8e is condensed on the inner peripheral wall surface of the garment storage container 1 and dropped and collected in the concave portion 10 of the lower bottom 1a. It is held in an external drain pan 9 via a drain pipe 7.

As a result, the evaporated water in the clothes container 1 is continuously condensed and taken out, and the evaporation is promoted without reaching the saturated state.

As described above, in the structure of the dryer according to the first embodiment of the present invention, a substantially vacuum (10 ^-2 to 10 ^-1 Torr) is used.
r), a vacuum pump 3 for evacuating the inside of the clothing container 1 to the same state, and a cooling unit 5 for condensing the evaporated water in the clothing container 1
And a refrigerating device 6 for making the cooling unit 5 function. Therefore, in the method of drying clothes by the dryer, as described above, first, the inside of the clothes container 1 is substantially evacuated using the vacuum pump 3 in order to promptly diffuse the evaporated water throughout the clothes container 1. Keep in state. At this time, for example, it is not necessary to degas as high as about 10 ^-3 Torr as in a vacuum desiccator, but it is necessary to reduce the diffusion resistance of water vapor to air and to increase the saturated water vapor pressure of water in clothing relatively. It suffices if the effect of evaporating water in clothes is promoted. Under low pressure, the mutual diffusion coefficient of the two gases becomes inversely proportional to the total pressure. Therefore, for example, the pressure inside the clothes container 1 is reduced to 1/1000 of the atmospheric pressure (0.76 Torr). Thus, a 1000-fold evaporation promoting action can be obtained.

Next, the garment storage container 1 is further cooled by the cooling unit 5 operated by the refrigeration unit 6.
The above-mentioned evaporated water is condensed, collected in the concave portion 10 of the bottom 1a, and collected on the drain pan 9 side to continuously dehumidify the inside of the container. As a result, the water vapor concentration around the clothes in the clothes container 1 is reduced, so that the evaporation is further promoted, and the drying can be promptly advanced.
The purpose of the cooling unit 5 provided in the clothing storage container 1 is to remove (dehumidify) the evaporated water in the clothing storage container 1, and it is not necessary to cool the clothing itself.

Therefore, unlike the conventional warm air type, the garment is not affected by the heat capacity of the entire garment container, and has the advantage that energy is not wasted. That is, no matter what the size of the container, the energy required for drying is determined only by the amount of clothing (the required amount of dehumidification), and therefore, it can be said that the drying according to this configuration is extremely efficient.

The cooling unit 5 and the refrigerating device 6 may be ordinary heat pump type, a Stirling refrigerating device, an adsorption refrigerating device, or a Peltier device.

In the above configuration, for example, when the drying has progressed to a certain extent, the vacuum pump 3 is operated again, the opening / closing valve 4 is opened, and the degree of vacuum in the clothes container 1 is restored. Evaporation efficiency is further improved by preventing a decrease in the evaporating effect due to an increase in evaporated water.

As another method, external air is re-introduced when dehumidification has progressed to a certain extent, for example, in order to prevent a decrease in the water vapor pressure in the clothes due to a temperature drop due to a reduced pressure in the deaeration step. Then, a method of recovering (heating) the temperature of the clothing by raising the temperature in the container and performing degassing again to promote evaporation can be adopted.

Further, when the outside air is re-introduced, a defrosting (heating) operation is performed in the cooling unit to remove the frozen water to the outside, thereby recovering the cooling performance when dehumidifying again. It is valid.

(Embodiment 2) FIG. 5 shows a configuration of a dryer according to Embodiment 2 of the present invention applied to a clothes dryer similarly to that of Embodiment 1 described above.

In the clothes dryer of the present embodiment, instead of the cooling unit 5 and the refrigeration unit 6 in the structure of the clothes dryer of the first embodiment, the on-off valve 4 of the degassing pipe 3a of the vacuum pump 3 is replaced with the on-off valve 4. A cooling unit 11a of, for example, a heat pump type cooling means 11 is provided at an upstream position, and the above-described condensed water collecting recess 10 and a drain pipe are provided at the bottom 1a of the clothes container 1. Only 7 and a drain pan 9 are provided.

According to such a configuration, the deaeration pipe 3a
The interior of the clothing container 1 can be radiated and cooled through the internal space, and a sufficient dehumidifying function can be obtained with this configuration, and the evaporation promoting effect exactly the same as that of the first embodiment can be obtained. Obtainable.

(Embodiment 3) FIG. 6 shows a configuration of a dryer according to Embodiment 3 of the present invention similarly applied to a clothes dryer.

As described above, the container for holding the object to be dried such as clothing is formed of a structure having a high pressure resistance so as to withstand a substantially vacuum state, and a vacuum pump as a deaeration means is added. By degassing the air in the container,
By forming a low-pressure drying environment below the atmospheric pressure for the moisture in the clothing to increase the saturated water vapor pressure of the moisture in the object to be dried, such as clothing, to make it easier to evaporate, and to cool and condense the evaporated moisture If it is continuously removed, the drying efficiency is improved and the drying time can be shortened.

Since it is not necessary to raise the temperature of the warm air, it is possible to dry the object having low heat resistance, such as clothing made of chemical fiber, without damaging it.

However, a heating means for slightly heating the moisture in the clothes is added to those structures so as to further increase the saturated water vapor pressure of the moisture in the clothes in the low pressure environment. Then, the drying efficiency is
Better.

The clothes dryer of the present embodiment is based on such a viewpoint. As shown, the clothes shelves 2a to 2e in the structure of the clothes dryer of the first embodiment are connected to the heat pipe 13 as shown in the figure. The heat pump 13 is formed so as to be capable of being heated by the heat of the refrigerant from the vacuum pump 3, and is supplied with heat, for example, by the air compression action of the vacuum pump 3 via the heat pipe 13 for heating. . For this purpose, exhaust heat recovery means 14 is provided on the outer periphery of the body of the vacuum pump 3 as shown in the figure.

According to this configuration, the saturated water vapor pressure of the water in the clothes can be increased without requiring a special energy source, and the evaporation efficiency can be further improved.
Further, since the drying efficiency can be increased, the drying can be performed in a shorter time.

(Embodiment 4) FIG. 7 shows a configuration of a dryer according to Embodiment 4 of the present invention, which is also applied to a clothes dryer.

The clothes dryer of the present embodiment is also based on the same viewpoint as that of the third embodiment. As shown, the clothes shelves 2a to 2c in the configuration of the clothes dryer of the second embodiment are shown in the drawing. 2e is formed so as to be capable of being heated by the heat of the refrigerant from the heat pipe 13 so that the heat discharged from the cooling unit 11a of the cooling means 11 of the clothes dryer is supplied through the heat pipe 13 so as to be heated. It is characterized by having done. Therefore, an exhaust heat recovery means 15 is provided on the heat radiating portion side of the cooling unit 11a.

According to this configuration, the saturated water vapor pressure of the water in the clothes can be increased without requiring a special energy source, and the evaporation efficiency can be further improved.
Further, the drying efficiency can be increased, and drying can be performed in a shorter time.

(Embodiment 5) FIG. 8 shows a configuration of a dryer according to a fifth embodiment of the present invention similarly applied to a clothes dryer.

The clothes dryer of the present embodiment is also based on the same viewpoints as those of the third and fourth embodiments. As shown in the drawing, the clothes shelf in the configuration of the clothes dryer of the first embodiment is shown in FIG. 2a to 2e are formed so as to be heatable by the heat of the refrigerant from the heat pipe 13. On the other hand, the heat pipe 13 is disposed by using the inside of the wall surface of the clothes container 1 and cooled through the heat pipe 13. Radiation fin 5 of unit 5
and c. heating by supplying waste heat released from c.

According to such a configuration, the saturated water vapor pressure of the moisture in the clothes can be increased without requiring any special energy source, and the evaporation efficiency is further improved, and the drying efficiency is further improved. In addition, drying can be performed in a shorter time.

(Embodiment 6) FIG. 9 shows the configuration of a dryer according to Embodiment 5 of the present invention, which is also applied to a clothes dryer.

In this embodiment, the third and third embodiments are described.
In order to achieve the same objects as in the fourth and fifth aspects, a high-frequency heating system using electromagnetic waves is adopted so that a heating effect can be selectively applied only to moisture in clothes.

For this purpose, as shown in the drawing, in the configuration of the clothes dryer of the first embodiment, the magnetron 17 for high-frequency heating is further provided on the lower surface of the ceiling 1b of the clothes container 1.
Is provided.

Therefore, according to this structure, in addition to the effect of promoting evaporation under a low-pressure and dehumidifying environment as in the structure of the first embodiment, the effect of selectively heating electromagnetic waves acting only on water molecules in clothes is obtained. This makes it possible to further increase the saturated water vapor pressure of the water without damaging the clothes, thereby more effectively improving the evaporation efficiency and shortening the drying time.

(Embodiment 7) FIG. 10 shows a configuration of a dryer according to Embodiment 7 of the present invention similarly applied to a clothes dryer.

In the present embodiment, the cooling means for dehumidification and the heating means for increasing the saturated steam pressure of the moisture in the clothes in the above-described embodiments are composed of an outdoor unit 21 and an indoor unit 22 as shown in the figure. The air conditioner is characterized by being connected to each other so as to use a refrigerant in a refrigeration circuit of the air conditioner.

According to such a configuration, the cooling and heating means can be realized using the existing refrigeration circuit, so that the cost is further reduced.

(Eighth Embodiment) FIG. 11 shows a configuration of a dryer according to an eighth embodiment of the present invention, which is also applied to a clothes dryer.

In this embodiment, the cooling means for dehumidification and the heating means for increasing the saturated water vapor pressure of the water in the clothes in the above-described embodiments are provided with the refrigerant of the refrigerator 23a of the refrigerator 23 as shown in the figure. It is characterized by being connected to each other so as to be configured by utilizing.

According to such a configuration, the cooling and heating means can be realized using the existing refrigeration circuit, so that the cost is further reduced.

Ninth Embodiment FIG. 12 shows a configuration of a dryer according to a ninth embodiment of the present invention similarly applied to a clothes dryer.

In this embodiment, the third and third embodiments are described.
When increasing the saturated water vapor pressure of water in clothes from the same viewpoint as in 4, 5, and 6, an ultrasonic vibration heating method is adopted, and the clothes racks 2a to 2e in the dryer of the first embodiment are ultrasonically heated. And they are driven by the ultrasonic oscillator 25.

According to such a configuration, the saturated vapor pressure of the moisture in the clothes is increased, and at the same time, the ordinary evaporation action is improved by the vibration of the clothes. Therefore, the drying efficiency is further improved and the drying time is shortened.

(Embodiment 10) FIG. 13 shows a configuration of a dryer according to Embodiment 10 of the present invention, which is also applied to a clothes dryer.

In the present embodiment, a rotating / stirring drum 30 for washing and drying is provided in a clothes container 1 provided with a water supply pipe 29a and a water discharge pipe 29b and configured as a washing tub and a clothes drying vessel. For example, the cooling system according to the first embodiment of the present invention and the high-frequency heating system according to the sixth embodiment are applied to a fully automatic washing machine provided by combining them with each other. It is characterized in that drying can be realized efficiently and in a short time.

In such a fully automatic washing / drying machine, for example, the clothes are not stirred at all times, but only after the drying has progressed to some extent, the clothes are stirred by the rotary stirring drum 30, thereby removing wrinkles during washing. You can do it.

(Embodiment 11) FIG. 14 shows a configuration of a dryer according to an eleventh embodiment of the present invention similarly applied to a clothes dryer.

In this embodiment, as in the above-described embodiments, when removing the water evaporated from the clothes, the cooling and condensation method is not adopted, but as shown in FIG. A moisture adsorbent 33 having a predetermined water absorption capacity made of, for example, silica gel or the like is provided in the formed concave portion 10 to perform adsorption and dehumidification.

The moisture adsorbent 33 can be used repeatedly because the adsorbed moisture can be easily desorbed by heating and drying after the use is completed.

With such a configuration, it is possible to achieve the same effect of improving the drying efficiency and shortening the drying time as in the above embodiments.

The moisture adsorbing material 33 may be, for example, a polymer moisture absorbing film in addition to the silica gel.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a configuration of a dryer according to a first embodiment of the present invention.

FIG. 2 is a schematic enlarged cross-sectional view showing a configuration of a main part of the dryer according to Embodiment 1 of the present invention.

FIG. 3 is a schematic enlarged perspective view showing a configuration of a main part of the dryer according to the first embodiment of the present invention.

FIG. 4 is a schematic enlarged perspective view showing a configuration of a modification of a main part of the dryer according to Embodiment 1 of the present invention.

FIG. 5 is a schematic diagram showing a configuration of a dryer according to Embodiment 2 of the present invention.

FIG. 6 is a schematic diagram showing a configuration of a dryer according to Embodiment 3 of the present invention.

FIG. 7 is a schematic diagram showing a configuration of a dryer according to Embodiment 4 of the present invention.

FIG. 8 is a schematic diagram showing a configuration of a dryer according to Embodiment 5 of the present invention.

FIG. 9 is a schematic diagram showing a configuration of a dryer according to Embodiment 6 of the present invention.

FIG. 10 is a schematic diagram showing a configuration of a dryer according to Embodiment 7 of the present invention.

FIG. 11 is a schematic diagram showing a configuration of a dryer according to an eighth embodiment of the present invention.

FIG. 12 is a schematic diagram showing a configuration of a dryer according to a ninth embodiment of the present invention.

FIG. 13 is a schematic diagram showing a configuration of a dryer according to Embodiment 10 of the present invention.

FIG. 14 is a schematic enlarged sectional view showing a configuration of a main part of a dryer according to Embodiment 11 of the present invention.

[Explanation of symbols]

1 is a clothes container, 2a to 2e are clothes shelves, 3 is a vacuum pump, 3a is a degassing pipe, 5 is a cooling unit, 5a is a cooling fin, 5b is a radiating fin, 6 is a refrigeration device, 7 is a drain pipe, 9 Is a drain pan, and 10 is a recess.

Claims (10)

[Claims] 1. A container for holding an object to be dried that can maintain a reduced pressure state below the atmospheric pressure, a deaeration means for discharging air from the container for holding an object to be dried, A drier comprising: a water removing means for selectively extracting and removing water. 2. A dryer according to claim 1, further comprising heating means for heating the material to be dried in the container for storing the material to be dried and increasing the saturated vapor pressure of the water in the material to be dried. . 3. The dryer according to claim 1, wherein the water removing means comprises a cooling means for cooling and condensing water in the container to be dried. 4. The dryer according to claim 1, wherein the moisture removing means is constituted by a moisture adsorbing means for removing the evaporated moisture in the container to be dried by adsorbing the moisture. 5. The dryer according to claim 2, wherein the heating means is configured to heat using waste heat from the cooling means. 6. The dryer according to claim 2, wherein the heating unit is configured to heat using waste heat from the deaeration unit. 7. The dryer according to claim 2, wherein the heating means is constituted by an electromagnetic heating means. 8. The dryer according to claim 2, wherein the heating means is constituted by an ultrasonic vibration heating means. 9. The dryer according to claim 3, wherein the cooling means is constituted by a dedicated one. 10. The dryer according to claim 3, wherein the cooling means is configured to serve also as that of another refrigerator.