JP2003004373A - Dehumidifier/dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of the prior art dehumidifier/dryer that when the temperature in the drying chamber is raised in order to dry a matter quickly, the pressure and temperature in a condenser increase to block operation of a compressor and when the compressor is operated under protected state, the drying time is prolonged significantly. SOLUTION: In the dehumidifier/dryer, an evaporator 4 can be operated continuously and the drying time can be shortened while reducing energy consumption by an arrangement wherein a plurality of absorbers/regenerators 9a and 9b perform suction and regeneration simultaneously and alternately.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidifying / drying device equipped with an intermittent operation type absorption heat pump used for drying clothes and the like.

[0002]

2. Description of the Related Art Conventionally, as the dehumidifying / drying device of this type, the one having the structure shown in FIG. 8 has been used. That is, the compressor 1, the condenser 2, the pressure reducing means 3 and the evaporator 4 are sequentially connected to form a closed circuit, and the condenser 2, the pressure reducing means 3, the evaporator 4 and the blower 5 are provided inside the drying chamber 6. And control device 7
In this configuration, the compressor 1 and the blower 5 are operated.

By operating the blower 5, the air in the drying cabinet 6 circulates in the drying cabinet 6, and the water vaporized from the material to be dried 8 is contained in the circulating air. At this time, the refrigerant gas is circulated in the closed circuit by a pump or the like not shown. This refrigerant gas enters the condenser 2 from the compressor 1 and is condensed, and is decompressed from the condenser 2 through the decompression means 3 and adiabatically expanded. The refrigerant gas adiabatically expanded to a low temperature is evaporated and vaporized by the evaporator 4 that receives the air blown by the blower 5. Therefore, the water vaporized from the material to be dried 8 is cooled to below the dew-point temperature in the evaporator 4, so that dew condensation occurs. The dry air dehumidified by dew condensation is heated by the condenser 2 to reach a high temperature and comes into contact with the object to be dried 8.

Thus, the drying of the material to be dried 8 in the drying chamber 6 proceeds.

[0005]

In the conventional structure described above, when the temperature inside the drying chamber 6 is raised to accelerate the drying of the material to be dried, the pressure and temperature of the refrigerant inside the condenser rises and the compressor compresses. The machine cannot be operated, and if the compressor is operated in a protected state, the drying time becomes extremely long.

[0006]

According to the present invention, a heating means, a cooling means, an inlet opening / closing valve provided on the inlet side, an outlet opening / closing valve provided on the outlet side, and an absorbing liquid provided inside are provided in parallel. A plurality of absorption regenerators, a condenser connected to the outlet opening / closing valve, a pressure reducing means connected to the condenser, an evaporator connecting the outlet to the pressure reducing means and the inlet opening / closing valve, and the evaporator The dehumidifying / drying apparatus is configured to include a blower that blows air in the order of the condenser, and a controller that controls the absorption regenerator and the blower as constituent elements.

By adopting a structure in which the absorption operation and the regeneration operation of a plurality of absorption regenerators provided in parallel are alternately performed at the same time, the evaporator can be operated continuously, and dehumidification and drying can be performed at a raised temperature. The drying and drying time can be shortened, and the energy consumption is reduced.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 has a heating means, a cooling means, an inlet opening / closing valve provided on the inlet side, an outlet opening / closing valve provided on the outlet side, and an absorbing liquid provided inside. A plurality of absorption regenerators provided in parallel, a condenser connected to the outlet opening / closing valve, a pressure reducing means connected to the condenser, an evaporator connecting the outlet to the pressure reducing means and the inlet opening / closing valve,
The dehumidifying / drying device is configured to include a blower that blows air in the order of the evaporator and the condenser, and a control device that controls the absorption regenerator and the blower.

By adopting a structure in which the absorption operation and the regeneration operation of the plurality of absorption regenerators provided in parallel are simultaneously and alternately performed, the evaporator can be operated continuously, the drying time can be shortened, and the energy consumption can be reduced. This is a dehumidifying and drying device.

According to a second aspect of the present invention, in addition to the configuration according to the first aspect, the evaporator, the condenser, the decompression means, and the blower are dehumidifying / drying devices housed in a drying chamber.

By adopting a structure in which the absorption operation and the regeneration operation of a plurality of absorption regenerators provided in parallel are alternately performed at the same time, the evaporator can be operated continuously, and dehumidification is performed while the temperature inside the drying chamber is raised. This is a dehumidifying / drying device that can perform drying, shorten the drying time, and consume less energy.

According to a third aspect of the present invention, in addition to the configuration according to the first or second aspect, the dehumidifying device is configured such that the absorption regenerator, the evaporator, the condenser, the pressure reducing means, and the blower are housed in a drying chamber. It is used as a drying device.

By providing the evaporator, the condenser, the depressurizing means and the blower in the drying chamber, the absorbed heat generated during the absorption operation of the absorption regenerator can be radiated into the drying chamber and the drying chamber dries the absorbed heat. Therefore, the energy consumed for drying can be reduced.

According to a fourth aspect of the present invention, in addition to the structure of the second or third aspect, a water-cooled heat exchanger is used as a cooling means of the absorption regenerator, and a plurality of water-cooled heat exchangers connected in parallel are used. The merging portion of the inlet side pipe is provided with a flow path switching means,
A heat transfer medium is circulated in the water-cooled heat exchanger by a circulation pump, and a radiator for radiating heat generated by the water-cooled heat exchanger is provided downstream of the evaporator in the drying chamber.

The water-cooled heat exchanger provided as the cooling means for the absorption regenerator, the flow path switching means provided at the confluence of the inlet side pipes of the plurality of water-cooled heat exchangers connected in parallel, and the heat for the water-cooled heat exchanger are provided. By providing a circulation pump for flowing a medium and a radiator provided on the downstream side of the evaporator of the drying cabinet to radiate the heat obtained by the water-cooled heat exchanger, an arbitrary place on the downstream side of the evaporator in the drying cabinet Since the radiator can be installed in the heat exchanger, the heat absorption can be used for heating the air in the drying chamber with a small structure.

According to a fifth aspect of the present invention, in addition to the structure according to any one of the second to fourth aspects, a dehumidifying / drying device having a structure in which a drying chamber is provided with an air supply / exhaust device for exchanging heat between intake air and exhaust gas. I am trying.

Since the drying chamber is provided with the air supply / exhaust device for exchanging heat between intake air and exhaust gas, the moisture generated in the initial stage of the drying operation can be discharged to the outside of the drying chamber by the air supply / exhaust device, and the cooling load amount caused by dew condensation is generated. Can be prevented, the drying time can be shortened, and the energy consumption can be reduced.

According to a sixth aspect of the present invention, in addition to the structure according to the fourth or fifth aspect, the radiator is a dehumidifying / drying device arranged on the bottom surface of the drying cabinet.

Since the radiator is provided on the bottom of the drying cabinet, the vicinity of the bottom where the velocity of the wind generated by the blower becomes low is heated by the absorption heat, and the inside of the drying cabinet can be effectively used.

According to a seventh aspect of the present invention, in addition to the configuration according to the fifth aspect, the radiator is a dehumidifying / drying device arranged at the intake side outlet of the air supply / exhaust device.

Since the radiator is provided at the intake side outlet of the air supply / exhaust device, the air supply after the heat exchange in the air supply / exhaust device is heated by the radiator, so that the air is supplied even when the air temperature outside the drying chamber is low. Since the temperature is not significantly lowered, high efficiency operation can be performed without lowering the drying performance.

According to the invention described in claim 8, in addition to the structure described in any one of claims 2 to 7, an evaporator is provided on the ceiling surface of the drying cabinet, and a condenser and a radiator are provided on the bottom surface. The dehumidifying / drying device has the configuration provided.

Since the evaporator is provided on the ceiling surface of the drying cabinet and the condenser and the radiator are provided on the bottom surface, the air in the drying cabinet can be circulated by natural convection without using a blower. Even if the dried product is in the form of powder, the dehumidifying / drying device does not scatter and the noise is low.

[0024]

(Embodiment 1) A first embodiment of the present invention will be described below. FIG. 1 is a block diagram showing the configuration of the dehumidifying dryer of this embodiment. The dehumidifying / drying machine of the present embodiment has a first absorption regenerator 9a and a second absorption regenerator 9b provided in parallel.
, Condenser 2, decompression means 3, evaporator 4, and blower 5
And a control device 7 and a drying chamber 6. The first absorption regenerator 9a, the second absorption regenerator 9b, the condenser 2, the pressure reducing means 3 and the evaporator 4 form a closed circuit including a piping system.

The first absorption regenerator 9a has an absorption liquid such as water inside and a first heating means 10a for heating the absorption liquid, and the first cooling means 1 constituted by a blower outside.
1a. Further, a first inlet opening / closing means 13a is connected to the inlet side of the first absorption / regenerator 9a, and a first outlet opening / closing means 14a is connected to the outlet side of the first absorption / regenerator 9a. The first inlet opening / closing means 13a and the first outlet opening / closing means 14a
Is composed of an on-off valve.

Similarly, the second absorption regenerator 9b has therein an absorbing liquid such as water and the second heating means 1 for heating the absorbing liquid.
0b, and has a second cooling means 11b constituted by a blower outside. Further, the second inlet opening / closing means 13b is connected to the inlet side of the second absorption / regenerator 9b, and the second outlet opening / closing means 14b is connected to the outlet side of the second absorption / regenerator 9b. The second inlet opening / closing means 13b and the second outlet opening / closing means 1
4b is composed of a check valve or a solenoid valve.

The condenser 2 has a first outlet opening / closing means 14a.
And the second outlet opening / closing means 14b. Further, the outlet of the condenser 2 is connected to a pressure reducing means 3 constituted by an expansion valve or the like. The refrigerant gas decompressed through the decompression means 3 and adiabatically expanded enters the evaporator 4, and passes from the evaporator 4 through the first inlet opening / closing means 13a or the second inlet opening / closing means 13b to the first absorption regenerator. Return to 9a or the second absorption regenerator 9b.

The blower 5 blows air to the evaporator 4 and the condenser 2 in this order.

In this embodiment, the condenser 2, the pressure reducing means 3,
The evaporator 4 and the blower 5 are housed in a closed drying cabinet 6.

As the first heating means 10a and the second heating means 10b, electric heaters or burners of gas oil and petroleum can be used.

Further, the control device 7 is composed of a microcomputer or the like in this embodiment, and has a first cooling means 14a, a second cooling means 11b, a blower 5, a first inlet opening / closing means 13a and a second inlet. The energization of the opening / closing means 13b, the first outlet opening / closing means 14a, the second outlet opening / closing means 14b, the first heating means 10a and the second heating means 10b is controlled.

The operation and action of the dehumidifying / drying device configured as described above will be described below.

First, with the first inlet opening / closing means 13a open and the first outlet opening / closing means 14a closed, the first heating means 10a of the first absorption / regenerator 9a is stopped to stop the first cooling means 1.
1a is operated to perform the absorption operation. When the first absorption / regenerator 9a is operated for absorption, the refrigerant in the condenser 2 is decompressed by the decompression means 3 and adiabatically expanded, and evaporated in the evaporator 4 to become a refrigerant gas. It is absorbed by the absorption liquid 2 inside. At this time, the control device 7 operates the second heating means 10b of the second absorption regenerator 9b with the second inlet opening / closing means 13b closed and the first outlet opening / closing means 14b open, and stops the second cooling means 11b. And perform regeneration operation. Therefore, the refrigerant gas is supplied from the second absorption regenerator 9b to the condenser 4, and is cooled and liquefied in the condenser 2. In this embodiment, after the regeneration operation of the second absorption regenerator 9b is sufficiently performed and the refrigerant is sufficiently expelled in this way, the operation of the second absorption regenerator 9b is switched from the regeneration operation to the absorption operation and at the same time the first absorption regeneration is performed. The operation of the container 9a is switched from the absorption operation to the regeneration operation.

As described above, the first absorption regenerator 9a and the second absorption regenerator 9b are alternately switched to the absorption operation and the regeneration operation by the control device 7 so that the refrigerant is continuously supplied to the condenser 2. Therefore, the cooling can be continuously performed.

At this time, the object to be dried 8 after the washing is completed is stored in the drying chamber 6, and the moisture contained in the object to be dried 8 is vaporized. In this state, the blower 5 blows air to the evaporator 4 and the condenser 2. That is, the high-humidity air blown to the evaporator 4 is cooled to a temperature below the dew point temperature because the refrigerant vaporized in the evaporator 4 removes heat of vaporization. Therefore, the water contained in the high-humidity air is condensed and liquefied, and is dripped as water into a drain (not shown). Thus, the high-humidity air is dehumidified and dried, and becomes low-temperature low-humidity air. This low-temperature and low-humidity air is sent to the condenser 2. The condenser 2 has a high temperature because it condenses the refrigerant gas. For this reason, the low-temperature and low-humidity air is stored in the condenser 2
Is heated by the air to become high temperature and low humidity air and comes into contact with the material to be dried 8. Therefore, the moisture contained in the material to be dried 8 is vaporized.

By repeating this air blowing cycle, the drying of the material 8 to be dried proceeds.

In the above description, the condenser 2, the depressurizing means 3, the evaporator 4 and the blower 5 are described as being housed in the drying cabinet 6, but the drying cabinet 6 is not always necessary. For example, when the condenser 2, the pressure reducing means 3, the evaporator 4, and the blower 5 are arranged in a bathroom or the like, the bathroom can be used as a drying space. Further, when the condenser 2, the pressure reducing means 3, the evaporator 4 and the blower 5 are arranged in a house made of vinyl sheet or the like,
The inside of this house can be used as a drying space.

As described above, in the present embodiment, a plurality of absorption regenerators 9a, 9b provided in parallel are used, and the absorption operation and the regeneration operation are alternately performed at the same time. The evaporator 4 can be operated, dehumidifying and drying can be performed in a state where the temperature is raised, the drying time can be shortened, and a dehumidifying and drying device that consumes less energy is realized.

Further, according to this embodiment, since the evaporator 4, the condenser 2, the pressure reducing means 3 and the blower 5 are housed in the drying chamber 6, the temperature inside the drying chamber 6 is raised. The dehumidifying / drying device can realize the dehumidifying / drying by using the above method, can shorten the drying time, and consume less energy.

Further, according to this embodiment, the first heating means 10
By using a heating means such as an electric heater or a gas burner for generating a high temperature as the a or the second heating means 10b, it is possible to increase the temperature in the drying chamber 6 as compared with the method using the compressor. Low humidity air to be dried 8
Therefore, the drying time can be shortened remarkably.

Second Embodiment Next, a second embodiment of the present invention will be described. FIG. 2 is a block diagram showing the configuration of the dehumidifying dryer of this embodiment. In this embodiment, the first absorption regenerator 9a, the second absorption regenerator 9b, the condenser 2, the decompression means 3, the evaporator 4 and the blower 5 are housed in the drying chamber 6.

The operation and action of the absorption heat pump device configured as described above will be described below. Second
The absorption regenerator 9b is regenerated, and the refrigerant vaporized from the second absorption regenerator 9b enters the condenser 2 to be condensed, is decompressed by the decompression unit 3 and undergoes adiabatic expansion, and enters the evaporator 4. In the evaporator 4, the refrigerant gas, which has a low temperature due to adiabatic expansion, is vaporized by the surrounding high temperature air. The air around the evaporator 4 is cooled by the heat of vaporization at this time. The vaporized refrigerant gas is absorbed by the absorbing liquid of the first absorption regenerator 9a. At this time, the absorption heat generated in the first absorption regenerator 9a is radiated into the drying chamber 6 by the first cooling means 11a, and the air in the drying chamber 6 is heated.

Further, since the second absorption regenerator 9b operates the first heating means 10a, the inside thereof is at a high temperature.
The second cooling means 11b blows air to the second absorption regenerator 9b and radiates the high-temperature heat energy from the surface to the outside. Therefore, this heat radiation is also stored in the drying cabinet 6.
It contributes to the temperature rise of the air inside.

Even if the absorption operation and the cooling operation of the first absorption regenerator 9a and the second absorption regenerator 9b are reversed, heat can be radiated into the drying chamber 6 in the same manner.

As described above, in this embodiment, since the first absorption regenerator 9a and the second absorption regenerator 9b are provided in the drying cabinet 6, the heat generated during the absorption operation is stored in the drying cabinet 6. It can dissipate heat. Therefore, the temperature inside the drying chamber 6 can be raised, and the energy consumed for drying can be greatly reduced.

(Third Embodiment) Next, a third embodiment of the present invention will be described. FIG. 3 is a block diagram showing the configuration of this embodiment. In the present embodiment, the first absorption regenerator 9a and the second absorption regenerator 9a
As the cooling means of the absorption regenerator 9b, the water cooling type first cooling means 11a and the second cooling means 11b are used. Further, the first cooling means 11a and the second cooling means 11b are connected in parallel, and a flow path switching means 15 is provided at the confluence of the inlet side pipes. At the outlet of the flow path switching means 15,
The radiator 17 is connected. The radiator 17 is provided at an arbitrary location on the downstream side of the evaporator 4 in the drying cabinet 6. Further, in this embodiment, the first cooling means 11a and the second cooling means 11b are used.
A heat pump is circulated between the heat radiator 17 and the radiator 17.

The operation of this embodiment will be described below.
The first absorption regenerator 9a is operated in the absorption mode, and the second absorption regenerator 9b is operated.
In the case of regenerating operation, the flow paths of the inlet side pipes of the first cooling means 11a and the second cooling means 11b are changed to the flow path switching means 16
Accordingly, the heat medium is circulated by the circulation pump 16 by switching to the first cooling means 11a side of the first absorption regenerator 9a. At this time, the heat medium is heated by the first cooling means 11a to reach a high temperature and sent to the radiator 17. The radiator 17 is arranged in the drying chamber 6. Therefore, according to the present embodiment, the radiator 17
The heat radiation from is used to heat the air in the drying cabinet 6. When the second absorption regenerator 9b performs the absorption operation and the first absorption regenerator 9a performs the regeneration operation, the flow paths of the inlet side pipes of the second cooling means 11b and the first cooling means 11a are changed to the flow path switching means 16 By the second cooling means 11 of the second absorption regenerator 9b.
The heat medium is circulated by the circulation pump 16 by switching to the b side. At this time, the heat medium is heated by the second cooling means 11b to reach a high temperature and is sent to the radiator 17. The radiator 17 is arranged in the drying chamber 6. Therefore, similarly to the above, heat radiation from the radiator 17 is used to heat the air in the drying chamber 6.

As described above, in this embodiment, the first
The absorption regenerator 9a and the second absorption regenerator 9b are provided with water-cooled first cooling means 11a and second cooling means 11b, and the absorbed heat is conveyed by the circulation pump 16 and radiated into the drying chamber 6 by the radiator 18. With this configuration, the temperature inside the drying chamber 6 can be raised to a high temperature, and a dehumidifying / drying device with high drying efficiency is realized.

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described. FIG. 4 is a block diagram showing the configuration of the dehumidifying dryer of this embodiment. In this embodiment, the air supply / exhaust device 18 for exchanging heat between intake air and exhaust gas is provided in the drying chamber 6.

The operation and action of the absorption heat pump device configured as described above will be described below. At the beginning of the drying operation, the material to be dried 8 contains a large amount of water, and the humidity of the air in the drying chamber 6 also becomes high. Therefore, the humidity of the air sent to the evaporator 4 by the blower 5 also becomes high, and the load of cooling and dehumidifying becomes heavy.

In this respect, in this embodiment, the high-humidity air in the drying cabinet 6 is discharged to the outside of the drying cabinet 6 by the air supply / exhaust device 18, and the low-humidity air outside the drying cabinet 6 is stored in the drying cabinet 6. Introduced. At this time, in this embodiment, the discharged air and the introduced air are heat-exchanged. Therefore, a large amount of moisture can be discharged to the outside of the drying chamber 6 by reducing the heat release to the outside of the drying chamber 6.

As described above, in this embodiment, since the air supply / exhaust device 18 for exchanging heat between the intake air and the exhaust gas is provided in the drying chamber 6, a large amount of moisture generated especially in the initial stage of the drying operation is supplied to the air supply / exhaust device. By discharging to the outside of the drying chamber 6 at 18, the cooling load amount due to dew condensation is reduced, so that the drying time can be greatly shortened and the energy consumption can be reduced.

(Fifth Embodiment) Next, a fifth embodiment of the present invention will be described. FIG. 5 is a block diagram showing the configuration of the dehumidifying dryer of this embodiment. In this embodiment, the radiator 17 described in the third embodiment is provided on the bottom surface of the drying chamber 6.

The operation and action of the absorption heat pump device configured as described above will be described below.

When the first absorption regenerator 9a is in the absorption operation and the second absorption regenerator 9b is in the regeneration operation, the first cooling means 1 is used.
The flow paths of the inlet side pipes of 1a and the second cooling means 11b are switched to the first cooling means 11a side of the first absorption regenerator 9a by the flow path switching means 16, and the heat medium is circulated by the circulation pump 16. At this time, the heat medium is heated by the first cooling means 11a to reach a high temperature and sent to the radiator 17. The high-temperature heat medium sent to the radiator 17 heats the air in the drying chamber 6 to a low temperature, and circulates again to the first cooling means 11a. When the second absorption / regenerator 9b performs the absorption operation and the first absorption / regenerator 9a performs the reproduction operation, the flow paths of the inlet side pipes of the second cooling means 11b and the first cooling means 11a are changed to the flow path switching means 16 Thus, the heat medium is circulated by the circulation pump 16 by switching to the second cooling means 11b side of the second absorption regenerator 9b. At this time, the heat medium is heated by the second cooling means 11b to reach a high temperature and is sent to the radiator 17. The radiator 17 is arranged in the drying chamber 6. Therefore, similarly to the above, heat radiation from the radiator 17 is used to heat the air in the drying chamber 6.

In this embodiment, the radiator 17 is provided on the bottom surface of the drying cabinet 6. The bottom surface of the drying cabinet 6 is a place where the air blown by the blower 5 is not fully rotated, and heating this portion is effective in raising the temperature of the entire drying cabinet 6. Therefore, according to this embodiment, a dehumidifying / drying device having high drying efficiency can be realized.

Further, according to this embodiment, since the air on the bottom of the drying chamber 6 is heated, the air can be circulated by natural convection. Therefore, according to this embodiment, a dehumidifying / drying device having high drying efficiency can be realized.

Further, according to the present embodiment, since the radiator 17 is provided on the bottom surface of the drying cabinet 6, the vicinity of the bottom surface where the velocity of the wind generated by the blower 6 becomes slow can be heated by the radiator 17 and the vicinity of the bottom surface is covered. The dried product 8 can be placed. Therefore, the inside of the drying cabinet 6 can be effectively used.

(Sixth Embodiment) Next, a sixth embodiment of the present invention will be described. FIG. 6 is a block diagram showing the structure of the dehumidifying dryer of this embodiment. In the present embodiment, the radiator 17 is provided at the intake side outlet of the air supply / exhaust device 18 that exchanges heat between the air supply and the exhaust.

The operation of this embodiment will be described below.
The first absorption regenerator 9a is operated to absorb the second absorption regenerator 9b.
When regenerating the water, the flow path of the inlet side pipe of the water cooling heat exchanger 11 is changed by the flow path switching means 15 to the first absorption regenerator 9a.
To the first cooling means 11a side of the circulation pump 17
To circulate the heat medium. The heat medium is heated by the first cooling means 11a to reach a high temperature and sent to the radiator 17.

Also in the case where the second absorption / regenerator 9b performs the absorption operation and the first absorption / regenerator 9a performs the regeneration operation, the flow path of the inlet side pipe of the water cooling heat exchanger 11 is changed to the second absorption by the flow path switching means 15. By switching to the second cooling means 11b side of the regenerator 9b, the heat medium circulated by the circulation pump 17 is heated by the second cooling means 11b to a high temperature and sent to the radiator 17.

The heat medium thus radiated by the radiator 17 and having a low temperature circulates to the first cooling means 11a or the second cooling means 11b, respectively.

At this time, since air is blown to the evaporator 4 and the condenser 2 by the blower 5 in the drying chamber 6, the air in the drying chamber 6 is dehumidified and the air supply / exhaust device 18 turns hot and humid air. The low temperature and low humidity air discharged to the outside of the drying chamber 6 is introduced into the drying chamber 6 by heat exchange.

When the temperature outside the drying chamber 6 is low, the temperature of the air after heat exchange in the air supply / exhaust device 18 is also low, but in this embodiment, the radiator 17 is provided at the intake side outlet of the air supply / exhaust device 18. It is what Therefore, the heat of the radiator 17 can keep the temperature of the air entering the drying chamber 6 high.

As described above, in this embodiment, since the radiator 17 is provided at the intake side outlet of the air supply / exhaust device 18, the air supply after heat exchange in the air supply / exhaust device 18 can be heated by the radiator 17. Even when the temperature of the air outside the drying chamber 6 is low, the supply air temperature is not significantly lowered, so that highly efficient operation can be performed without lowering the drying performance.

(Embodiment 7) Next, a seventh embodiment of the present invention will be described. FIG. 7 is a block diagram showing the configuration of this embodiment. In this embodiment, the evaporator 4 is provided on the ceiling surface of the drying chamber 6, and the condenser 2 and the radiator 17 are provided on the bottom surface.

The operation of this embodiment will be described below.
The first absorption regenerator 9a is operated in the absorption mode, and the second absorption regenerator 9b is operated.
When regenerating the water, the flow path of the inlet side pipe of the water cooling heat exchanger 11 is changed by the flow path switching means 15 to the first absorption regenerator 9a.
To the first cooling means 11a side of the circulation pump 16
To circulate the heat medium. The heat medium is heated by the first cooling means 11a to reach a high temperature and sent to the radiator 17. Radiator 17
The air in the drying chamber 6 is heated by the heat radiation of. The heat medium that has become low in temperature due to this heat radiation is again used in the first cooling means 1
Circulate to 1a.

At this time, the high-temperature refrigerant gas generated in the second absorption regenerator 9b is condensed and radiated by the condenser 2, and then is decompressed in the liquid state by the decompression means 3 and adiabatically expanded into the evaporator 4. The evaporator 4 evaporates at a low temperature to become a refrigerant gas, which is absorbed by the absorbing liquid in the first absorption regenerator 9a. At this time, the evaporator 4 having a low temperature cools the ceiling surface of the drying chamber 6 in this embodiment, and the condenser 2 and the radiator 17 having a high temperature have the drying chamber 6 drying.
The bottom of is being heated.

Therefore, the air in the drying chamber 6 is heated at the bottom surface to have a high temperature and cooled at the ceiling surface to have a low temperature, thereby promoting natural convection. Therefore, the air in the drying cabinet 6 can be efficiently circulated without arranging a blower in the drying cabinet 6. Therefore, the article to be dried 8 can be dried with a simple configuration.

As described above, in this embodiment, since the low temperature evaporator 4 is provided on the ceiling surface of the drying chamber 6 and the high temperature condenser 2 and the radiator 17 are provided on the bottom surface, the blower 5 is not used. Since the air inside the drying chamber 6 is circulated by natural convection, even if the material to be dried is powdery, it can be efficiently dried in an environment with low noise without scattering.

[0071]

According to the invention described in claim 1, the heating means and the cooling means, the inlet opening / closing valve provided on the inlet side, the outlet opening / closing valve provided on the outlet side, and the absorbing liquid provided inside are arranged in parallel. A plurality of absorption regenerators provided, a condenser connected to the outlet opening / closing valve, a pressure reducing means connected to the condenser, an evaporator connecting the outlet to the pressure reducing means and the inlet opening / closing valve, and the evaporator And a blower that blows air in the order of the condenser, and a configuration that includes a control device that controls the absorption regenerator and the blower, so that the absorption operation and the regeneration operation of a plurality of absorption regenerators provided in parallel are performed simultaneously. The dehumidifying / drying device can be performed alternately, the evaporator can be continuously operated, the drying time can be shortened, and the energy consumption is reduced.

According to the second aspect of the invention, the evaporator, the condenser, the decompression means and the blower are housed in a drying chamber, and a plurality of absorption regenerators are installed in parallel to perform absorption operation and regeneration operation. The evaporator can be operated continuously by alternately performing the above, and dehumidifying and drying can be performed while the temperature inside the drying chamber is raised, which shortens the drying time and realizes a dehumidifying and drying device that consumes less energy. To do.

According to the third aspect of the invention, the absorption regenerator, the evaporator, the condenser, the decompression means and the blower are housed in a drying chamber so that the absorption heat generated during the absorption operation of the absorption regenerator is generated. Since the heat can be dissipated in the drying chamber and the absorbed heat can be used for drying, the dehumidifying / drying device that consumes less energy for drying is realized.

According to a fourth aspect of the present invention, a water-cooling heat exchanger is used as a cooling means for the absorption regenerator, and a flow path switching means is provided at a confluence portion of inlet side pipes of a plurality of water-cooling heat exchangers connected in parallel. The water-cooled heat exchanger is circulated with a heat medium by a circulation pump, and a radiator for radiating the heat of the water-cooled heat exchanger is provided on the downstream side of the evaporator of the drying chamber, which is small in size. With the configuration, the absorbed heat can be used to heat the air in the drying chamber, and the dehumidifying / drying device that consumes less energy for drying is realized.

According to a fifth aspect of the present invention, the drying chamber is provided with a supply / exhaust device for exchanging heat between intake air and exhaust gas, and moisture generated in the initial stage of the drying operation can be discharged to the outside of the drying chamber by the supply / exhaust device. The dehumidifying / drying device is capable of preventing an increase in cooling load caused by dew condensation, shortening the drying time, and reducing energy consumption.

According to the sixth aspect of the present invention, the radiator is arranged on the bottom of the drying cabinet to realize a dehumidifying / drying apparatus which can effectively use the inside of the drying cabinet.

According to a seventh aspect of the present invention, the radiator is arranged at the intake side outlet of the air supply / exhaust device, so that even when the temperature of the air outside the drying chamber is low, high efficiency operation is achieved without lowering the drying performance. A dehumidifying / drying device capable of performing the above is realized.

According to the invention described in claim 8, the evaporator is provided on the ceiling surface of the drying cabinet, and the condenser and the radiator are provided on the bottom surface, so that a natural convection is used in the drying cabinet without using a blower. It is possible to realize a dehumidifying / drying device that can circulate air, does not scatter even if the material to be dried is powdery, and has low noise.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a dehumidifying / drying apparatus that is a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a dehumidifying / drying device that is a second embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a dehumidifying / drying device that is a third embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a dehumidifying / drying apparatus that is a fourth embodiment of the present invention.

FIG. 5 is a block diagram showing the configuration of a dehumidifying / drying apparatus that is a fifth embodiment of the present invention.

FIG. 6 is a block diagram showing a configuration of a dehumidifying / drying device which is a sixth embodiment of the present invention.

FIG. 7 is a block diagram showing a configuration of a dehumidifying / drying device that is a seventh embodiment of the present invention.

FIG. 8 is a block diagram showing the configuration of a conventional dehumidifying / drying device.

[Explanation of symbols]

2 condenser 3 decompression means 4 evaporator 5 blower 6 drying cabinet 7 Control device 8 Items to be dried 9a First absorption regenerator 9b Second absorption regenerator 10a First heating means 10b Second heating means 11a First cooling means 11b Second cooling means 12 Absorbing liquid 13a First entrance opening / closing means 13b Second entrance opening / closing means 14a First outlet opening / closing means 14b Second outlet opening / closing means 15 Flow path switching means 16 Circulation pump 17 radiator 18 Air supply / exhaust device

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F26B 21/04 F26B 21/04 D 23/00 23/00 Z // F25B 17/04 F25B 17/04 ( 72) Inventor Takaaki Kusaka 1006, Kadoma, Kadoma-shi, Osaka Prefecture F-term in Matsushita Electric Industrial Co., Ltd. (reference) 3L093 NN01 PP07 PP11 PP20 3L113 AA01 AB03 AC01 AC22 AC25 BA14 CB14 CB17 CB24 DA02 DA10 4L019 BB04

Claims (8)

[Claims] 1. A plurality of absorption regenerators provided in parallel, each having a heating means and a cooling means, having an inlet opening / closing valve on the inlet side and an outlet opening / closing valve on the outlet side, and storing an absorbing liquid therein; A condenser connected to an on-off valve, a pressure reducing means connected to the condenser, an evaporator connecting an outlet to the pressure reducing means and the inlet on-off valve, and a blower that blows air in the order of the evaporator and the condenser, A dehumidifying / drying device comprising the absorption regenerator and a control device for controlling the blower. 2. The dehumidifying / drying apparatus according to claim 1, wherein the evaporator, the condenser, the decompression means, and the blower are housed in a drying cabinet. 3. The dehumidifying / drying apparatus according to claim 1, wherein the absorption regenerator, the evaporator, the condenser, the pressure reducing means, and the blower are housed in a drying cabinet. 4. A water-cooled heat exchanger is used as a cooling means of the absorption regenerator, and a flow path switching means is provided at a confluence portion of inlet side pipes of a plurality of water-cooled heat exchangers connected in parallel. The dehumidifying / drying device according to claim 2 or 3, wherein a heat medium is circulated in the container by a circulation pump, and a radiator for radiating the heat generated by the water-cooled heat exchanger is provided on the downstream side of the evaporator in the drying chamber. 5. The dehumidifying / drying device according to claim 2, further comprising a supply / exhaust device for exchanging heat between intake air and exhaust gas in the drying chamber. 6. The dehumidifying / drying device according to claim 4, wherein the radiator is arranged on the bottom surface of the drying cabinet. 7. The dehumidifying / drying device according to claim 5, wherein the radiator is arranged at an intake side outlet of the air supply / exhaust device. 8. The dehumidifying / drying device according to claim 2, wherein an evaporator is provided on the ceiling surface of the drying cabinet, and a condenser and a radiator are provided on the bottom surface.