JPH0861854A - Drying device - Google Patents

Abstract

PURPOSE: To provide a device having a drying function and in particular capable of realizing an improved drying efficiency. CONSTITUTION: Adsorption materials 1 adsorbing moisture in air and discharging moisture content through heating are constructed such that an electrical heater 2 acting as a heating source is held between the adsorption materials. A blower 3 is arranged at an upstream side of the adsorption materials 1 and an electrostatic filter 4 is arranged at a far upstream side of the blower 3. An indoor air suction port 5 for taking indoor air into a room and an indoor air blowing port 6 for blowing out air into the room are installed at the upper-most upstream position and the lower-most downstream position. A heat exchanger 7 and an inlet port of the heat exchanger are arranged at the downstream side of the adsorption materials 1. A damper 9 selects whether or not air discharted out of the adsorption materials 1 is flowed toward an indoor side or flowed to the heat exchanger 7. Reference numeral 10 denotes a water tank for sue in storing water condensed at the heat exchanger. Each of reference numerals 11 and 12 denots a temperature sensor and a humidity sensor arranged the indoor air suction port, respectively. Reference numeral 13 denotes a control part for performing ON-OFF control of a heating heat source 2, an operation of the blower 3 and each of the dampers 9. With such an arrangement as above, an energy saving drying operation may become possible.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a drying or dehumidifying technique.

[0002]

2. Description of the Related Art A conventional dehumidifying or humidifying device is disclosed in, for example, Japanese Patent Laid-Open No. 63-286634. As shown in FIG. 5, this device has a solid adsorbent 21 and a heater 2.
2, a blower 23, and an air passage switching unit 24. The heater 22 is provided upstream of the solid adsorbent 21 in the air passage. In the above configuration, the air passage switching unit 24
Is switched to the position of the broken line to close the outdoor suction port 25 and the outdoor air outlet 26, and after allowing the indoor air to pass from the indoor air inlet 27 to the solid adsorbent 21, the indoor air outlet 28 is set to return to the room again. Has been done. At this time, the indoor suction port 2
The water contained in the indoor air taken in from 7 is adsorbed by the solid adsorbent 21. After this adsorption process, the air passage switching unit 24 is switched to the position shown by the solid line, and the outdoor air is sucked through the outdoor suction port 25, passes through the solid adsorbent 21, and then is discharged again from the outdoor air outlet 26 to the outside. Then, the solid adsorbent 21 is regenerated.

[0003]

However, in the above-mentioned conventional structure, in order to discharge the water vapor adsorbed by the solid adsorbent material 21 to the outside of the room, it is necessary to have means for communicating the outside with the device. Therefore, special installation work for the device is required. In addition, most of the thermal energy for regenerating the adsorbent is discarded outside the room, so that the energy consumption required for drying is greater than that for the vapor compression type.

[0004]

In order to solve the above problems, the drying apparatus of the present invention uses an adsorbent, a heating source incorporated between the adsorbent and the insulating material, and air to the adsorbent. An air blower, a filter provided upstream of the air blower, an indoor suction port provided upstream of the adsorbent, an indoor air outlet and a heat exchanger inlet provided downstream of the adsorbent, and the air outlet. And a damper for switching the heat exchanger inlet, a heat exchanger connected to the heat exchanger inlet, a water tank provided downstream of the heat exchanger, and a temperature and humidity sensor provided near the suction port of the blower. And a control unit that controls the heating source, the blower, and the damper, and the heat exchanger outlet faces the room. In this case, a configuration in which a part of air is sent from the blower to the heat exchanger or a configuration in which air discharged from the heat exchanger is supplied to the indoor suction port may be used.

[0005]

The present invention operates as follows with the above-mentioned structure. The air sucked from the inside of the room becomes the dry air after adsorbing the water vapor on the adsorbent, and returns to the inside of the room again. This lowers the humidity in the indoor air. On the other hand, the adsorbent that has reached the breakthrough state is subjected to a regeneration process. At this time, the regeneration air supplies the indoor air to the adsorbent, so that no heat loss occurs during this time. The adsorbent is heated directly by the indoor air to desorb the moisture in the adsorbent. This regeneration air taken from the room takes in the water vapor desorbed from the adsorbent and flows into the heat exchanger through the heat exchanger inlet. The room air sufficiently containing water vapor is condensed in this heat exchanger and the condensed water is stored in the water tank. On the other hand, the air in the heat exchanger becomes dry air and returns to the room. This dry air can contribute to dry the room. From the adsorption to the regeneration process, the room can be dehumidified or dried without any heat loss. By repeating this adsorption-regeneration process, the controlled space is dried successively. It is possible to further improve the drying efficiency by supplying a part of the air from the blower to the heat exchanger (claim 2) or supplying the warm air that has passed through the heat exchanger to the indoor air inlet (claim 3). It will be possible.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 is an adsorbent, and the adsorbent 1 has a structure in which an electric heater 2 as a heating source is sandwiched in front and back.

The adsorbent 1 is formed in a corrugated shape. A blower 3 is arranged upstream of the adsorbent 1.
A charging filter 4 is provided on the upstream side of the blower 3. Reference numeral 5 is an indoor air suction port for taking in indoor air.
Reference numeral 6 denotes an indoor outlet that blows air into the room. Reference numeral 7 denotes a heat exchanger, which is connected to the heat exchanger inlet 8 so that the air discharged from the adsorbent can pass through. Reference numeral 9 is a damper for switching the air passage. Reference numeral 10 is a water tank for receiving water condensed by the heat exchanger. Reference numerals 11 and 12 denote intake air temperature and humidity sensors. A control unit 13 controls the operation of each unit according to the operation sequence.

Based on the above structure, the drying operation of the controlled space will be described. The control unit 13 first detects the adsorbent 1
In order to desorb the water adsorbed on the adsorbent 1 (even if the blower 3 is not operated, the water in the air is naturally diffused so that the adsorbent 1
Therefore, the damper 9 closes the indoor air outlet side, and operates the blower 3 and the heating source 2. The indoor air purges water vapor desorbed from the heated adsorbent 1 from the adsorbent 1 by the heating source 2 and enters the heat exchanger 7 from the heat exchanger inlet 8. The air in the heat exchanger contains the water vapor received from the adsorbent 1. This steam is condensed by the heat exchanger 7 and stored in the water tank 10. The indoor air in which the water vapor is condensed becomes dry air and returns to the room again. When a certain amount of time has passed and the water content in the adsorbent 1 has run out, the control unit 13
De-energize the heating source 2. By operating only the blower 3, the temperature of the adsorbent 1 is lowered to a level at which water vapor can be adsorbed. That is, post-purging is performed. Since the damper 9 closes the heat exchanger inlet 8 during the post-purging, dry warm air can be blown out from the indoor outlet 6 into the room, so that the drying effect is improved. When the adsorbent 1 is regenerated, the control unit 13 increases the rotation speed of the blower 3 in order to shift to the adsorption process. Indoor air is
While attracting dust, suspended particles, etc. to the charging filter 4,
Moisture is adsorbed by the adsorbent 1 and supplied to the room as clean dry air. By repeating the above regeneration-adsorption process, the control target space is dried. As a result, since the heating source 2 directly heats the adsorbent 1 and supplies the air during the regeneration process to the room to contribute to the drying, it is possible to realize energy-saving drying with very little heat loss, and also in the indoor air. It has the effect of reducing the humidity and also reducing dust and odorous components. In order to further improve the drying efficiency, it is also effective to supply the dried warm air to the object to be dried by operating the heating source 2 while suppressing the capacity of the heating source 2 during the adsorption process. Further, as shown in FIG. 2, it is effective to increase the drying efficiency by partially supplying the air from the blower 3 to the heat exchanger 7 to cool the heat exchanger 7 even during the regeneration process and the adsorption process. is there. In addition, a configuration in which warm air that has passed around the heat exchanger 7 or hot air that is blown out from the heat exchanger 7 is supplied from the indoor suction port 5 is also effective in improving the drying efficiency. Moreover, since it is not necessary to dispose of water vapor outside the room, exhaust equipment is not required and it becomes possible to carry the equipment around.

[0010]

As described above, according to the drying apparatus of the present invention, the following effects can be obtained.

In the regeneration process, since the adsorbent is directly heated and the air during regeneration is also returned to the room, there is almost no heat loss compared to the indirect heating method using warm air or the method in which the air during regeneration is discarded outdoors. There is no energy-saving dry operation. In addition, since the transient response performance in the regeneration process is improved, the drying capacity is also increased. Since it is not necessary to dispose of steam outside the room, exhaust equipment is not required and it can be carried. During the drying operation, the adsorbent is heated, but the hot air can also sterilize the bacteria and the like flowing into the device.

[Brief description of drawings]

FIG. 1 is a sectional view of a drying device according to an embodiment of the present invention.

FIG. 2 is a sectional view of a drying device according to another embodiment of the present invention.

FIG. 3 is a sectional view of a drying device according to another embodiment of the present invention.

FIG. 4 is a sectional view of a drying device according to another embodiment of the present invention.

FIG. 5 is a sectional view of an embodiment of the conventional invention.

[Explanation of symbols]

 1 Adsorbent 2 Heat Source 3 Blower 4 Filter 5 Indoor Suction 6 Indoor Blowing 7 Heat Exchanger 8 Heat Exchanger Inlet 9 Damper 10 Water Tank 11 Temperature Sensor 12 Humidity Sensor 13 Control Section

Claims (10)

[Claims] 1. An adsorbent, a heating source incorporated between the adsorbent and the insulating material, a blower for sending air to the adsorbent, a filter provided upstream of the blower, and an upstream of the filter. Indoor inlet provided on the side, an indoor outlet provided on the downstream side of the adsorbent and a heat exchanger inlet, a damper for switching the outlet and the heat exchanger inlet, and heat connected to the heat exchanger inlet. An exchanger, a water tank provided downstream of the heat exchanger, a temperature and humidity sensor provided near the suction port of the blower, the heating source, a blower,
A drying device comprising a control unit for controlling a damper and having the heat exchanger outlet facing the indoor side. 2. An adsorbent, a heating source incorporated between the adsorbent or the insulating material, a blower for sending air to the adsorbent, and an indoor suction port provided on the upstream side of the adsorbent.
An indoor outlet provided on the downstream side of the adsorbent and a heat exchanger inlet, a damper for switching the outlet and the heat exchanger inlet, a heat exchanger connected to the heat exchanger inlet, and a heat exchanger of the heat exchanger. A drying device comprising a water tank provided on the downstream side and having an opening on a wall surface between the adsorbent and the blower and facing the heat exchanger. 3. An adsorbent, a heating source incorporated between the adsorbent and the insulating material, a blower for sending air to the adsorbent, and an indoor suction port provided on the upstream side of the adsorbent,
An indoor outlet provided on the downstream side of the adsorbent and a heat exchanger inlet, a damper for switching the outlet and the heat exchanger inlet, a heat exchanger connected to the heat exchanger inlet, and a heat exchanger of the heat exchanger. A water tank provided on the downstream side and a casing having a plurality of holes on the surface thereof, and the heat exchanger is provided with an opening at a position facing the heat exchanger and the indoor suction port on the wall surface on the upstream side of the blower. Drying device that supplies the warm air that has passed through to the indoor air inlet. 4. An adsorbent, a heating source incorporated between the adsorbent and the insulating material, a blower for sending air to the adsorbent, and an indoor suction port provided on the upstream side of the adsorbent,
An indoor outlet provided on the downstream side of the adsorbent and a heat exchanger inlet, a damper for switching the outlet and the heat exchanger inlet, a heat exchanger connected to the heat exchanger inlet, and a heat exchanger of the heat exchanger. A drying device for the heat exchanger, comprising a water tank provided downstream, and a casing having a plurality of holes on the surface thereof, and having an opening in the heat exchanger at a position facing the indoor suction port. 5. Air adsorbed from the room is passed through an adsorbent to adsorb moisture in the air, an adsorbing step of blowing this air into the room, a heating source is operated, and room air is sent to the adsorbent. 5. A regeneration step of blowing the same air again through a heat exchanger into the room.
The drying device according to claim 1. 6. A room temperature / humidity detection element is provided, and the supply air volume and the operating time during adsorption-regeneration operation are controlled based on the information of the detection element. The drying device according to claim 1. 7. The control circuit has an operation sequence that always starts from a regeneration process at the start of operation.
The drying device according to any one of 2, 3, and 4. 8. The control circuit has an operation sequence in which the operation of the heating source is stopped at the same time as the end of the regeneration stroke, and the damper is operated to close the inlet of the heat exchanger. The drying device according to claim 1. 9. The control circuit has an operation sequence for operating the heating source even during the adsorption stroke.
5. The drying device according to any one of 4 and 4. 10. The control circuit according to claim 1, wherein the control circuit has an operation sequence in which the suction stroke is always performed at the end of operation and the damper is operated to close the indoor air outlet. Drying equipment.