JPH07108127A - Dehumidification regenerator using hygroscopic liquid - Google Patents

Abstract

PURPOSE:To regenerate a hygroscopic liquid with high energy efficiency while preventing the hygroscopic liquid from scattering by a simple and inexpensive constitution. CONSTITUTION:A dehumidifying module 1 for absorbing the moisture contained in air in a room flowing to the other side of tubes into a hygroscopic liquid L circulating to one side of the tubes through the membrane of the tubes 3 made of a steam permeable membrane, a tank 4 having a heater 5 and for storing a hygroscopic liquid L, and feed piping 6 and return piping 7 for connecting the dehumidifying module 1 and the tank 4 so that the hygroscopic liquid may be circulated are provided. In the feed piping 6, a cooler 8 and a pump 9 which is on the dehumidifying module 1 side of the cooler 8 are installed. The delivery of the pump 9 is controlled by a controller 19 so as to increase in the first and last stages of operation. The upper surface of the tank 4 is covered with a cover 4 on which a discharge duct 15 whose end part is bent at right angles is erected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidifying regeneration using a hygroscopic liquid which absorbs moisture in the air into the hygroscopic liquid to dehumidify the inside of the room and removes moisture from the hygroscopic liquid diluted with water to regenerate it. Regarding the device.

[0002]

2. Description of the Related Art Conventionally, as a dehumidifying / regenerating device of this type, a device as shown in FIG.
-140535 publication). This dehumidification regeneration device utilizes the principle that an aqueous solution of lithium chloride (LiCl), which is a hygroscopic liquid, keeps the relative humidity of the air in contact with it at a lower value as the concentration of the aqueous solution is higher and the temperature is lower. ing. That is, this dehumidifying / regenerating device is provided in the air conditioning chamber 21.
Provided are humidity control units 22 and 22 in which several tubes 23 made of a water vapor permeable film are arranged in parallel and a blower fan 24.
Tank 25 equipped with cooler 26, stirrer 27, and water supply valve 28
The LiCl aqueous solution 29 stored therein is circulated and supplied to the humidity control unit 22 by a pump 30 via a feed pipe 31 and a return pipe 32. On the other hand, outside the room, a concentration unit 33 and a heater 35 similar to the humidity control unit having the blower fan 34 are provided.
Is provided, and the LiCl aqueous solution 29 in the tank 25 is pumped to the pump 3
6 is circulated and supplied to the heater 35 and the concentrating unit 33 through the pipes 37 and 38.

To humidify the air conditioning chamber 21,
The controller 4 based on the concentration detected by the concentration detector 39
When the heater 35 is operated and the water supply valve 28 is opened by 0, the LiCl aqueous solution 29 in the tank 25 is adjusted to have a predetermined high temperature and a low concentration, and is supplied to the humidity control unit 22 by the pump 30 so that the water in the LiCl aqueous solution is removed. It permeates the tube membrane and is released indoors. To dehumidify the air conditioning chamber 21, the controller 40 pumps the pump 36 and the heater 3 until the detected concentration of the concentration detector 39 reaches a predetermined high concentration.
5. Operate the blower fan 34 to operate the LiCl in the tank 25.
The aqueous solution 29 is heated to a high temperature and supplied to the concentrating unit 33, and the water in the aqueous solution permeates the tube membrane and is discharged to the outside of the room. Next, Li in the tank 25, which has reached a predetermined high concentration,
After the Cl aqueous solution is cooled to a predetermined low temperature by the cooler 26, it is supplied to the humidity control unit 22 by the pump 30 so that the water contained in the air in the air conditioning chamber 21 permeates the tube membrane and is absorbed in the LiCl aqueous solution.

[0004]

However, in the conventional dehumidifying / regenerating apparatus described above, the absorbed LiCl aqueous solution 29 is heated to 140 to 150 ° C. by the heater 35 and then passed through the concentration unit 33 which is ventilated by the blower fan 34. Since the concentrated LiCl solution is concentrated, the amount of heat of the heated LiCl aqueous solution is absorbed by a large amount of air from the blower fan, resulting in a large heat loss, and the energy efficiency during regeneration is reduced to about 50%. Further, since the heated LiCl aqueous solution is only cooled by the wind, the LiCl aqueous solution cannot be heated to a very high temperature from the viewpoint of preventing the corrosion and deterioration of the tube 23, the pipe 38, etc., and therefore, the concentrated high concentration solution is used. Can not be expected. Moreover, in order to regenerate the LiCl aqueous solution, the pump 36, the pipe 37, the heater 35,
Since many members such as the blower fan 34 and the concentrating unit 33 are required, the device becomes complicated and expensive. Furthermore, since the cooler 26 is provided in the tank 25, the entire LiCl aqueous solution 29 in the tank is kept at a predetermined low temperature.
There is a problem that it cannot be supplied to the humidity control unit 22 until it is cooled to (for example, 20 ° C.), and a large-sized cooler 26 having a large capacity is required.

Therefore, an object of the present invention is to devise the structure of the tank, the method of concentrating the hygroscopic liquid, the arrangement of the cooler, and the control of the liquid feed pump to prevent the hygroscopic liquid from scattering with a simple and inexpensive structure. It is an object of the present invention to provide a dehumidification / regeneration device using a hygroscopic liquid that can regenerate the hygroscopic liquid with high energy efficiency while reducing the running cost.

[0006]

In order to achieve the above object, the dehumidifying / regenerating apparatus according to the first aspect of the present invention uses a moisture absorbing liquid L circulating through one of the vapor permeable membranes 3 to one of the membranes 3 as shown in FIG. , A dehumidifying module 1 for absorbing water contained in the room air flowing through the other side of the membrane 3, a tank 4 having a heater 5 for storing the hygroscopic liquid L, and the dehumidifying module for circulating the hygroscopic liquid L. 1 and the feed pipe 6 and the return pipe 7 connecting the tank 4 and the hygroscopic liquid L
And a cooler 8 which is provided in the feed pipe 6 and cools the circulating hygroscopic liquid L. The dehumidifying / regenerating device according to claim 2 is the pump 9
Is provided on the dehumidifying module 1 side of the feed pipe 6 with respect to the cooler 8. A dehumidifying / regenerating apparatus according to a third aspect is a lid 14 in which an exhaust duct 15 whose tip portion is bent at a predetermined angle is provided on the upper surface of the tank 4 according to the first or second aspect.
Is covered by.

In the dehumidifying / regenerating apparatus according to a fourth aspect, the tank according to the first or second aspect is a lid 1 in which an exhaust duct 15 is provided upright.
4, a separator plate 18 for preventing the release of the hygroscopic liquid L is provided on the inner surface of the exhaust duct 15. The dehumidifying / regenerating device according to claim 5 is the dehumidifying / regenerating device according to claim 3 or 4.
The tip portion 19 of the exhaust duct 15 described in 1 above is bent and immersed in the water W in the water tank 20. The dehumidifying / regenerating device according to claim 6 is the liquid supply flow rate Q of the pump 9 according to claim 1.
Are controlled by the controller 10 to increase in the initial stage of operation. In the dehumidifying / regenerating apparatus according to claim 7, the controller 10 according to claim 6 controls the liquid supply flow rate Q of the pump 9 so as to increase even at the end of the operation.

[0008]

First, when dehumidifying the room with the dehumidifying / regenerating apparatus of claim 1, the cooler 8 provided in the feed pipe 6 is operated and the highly concentrated hygroscopic liquid L in the tank 4 is pumped.
Is sent to the dehumidifying module 1 through the feed pipe 6. Then, the highly concentrated hygroscopic liquid L is cooled to a predetermined low temperature by the cooler 8 and flows into one of the water vapor permeable membranes 3 of the dehumidification module 1 (for example, the outside of the tube) and the other of the water vapor permeable membranes 3 (for example, Moisture contained in the room air flowing inside the tube) is absorbed through the membrane. The hygroscopic liquid L having a low concentration due to water absorption is returned to the tank 4 through the return pipe 7, and the room is dehumidified by the circulation of the hygroscopic liquid. The cooler 8 is not all the hygroscopic liquid in the tank 4,
Since only the hygroscopic liquid sent to the dehumidifying module 1 needs to be cooled, a small one with a small capacity is sufficient. Next, when regenerating the hygroscopic liquid L in the tank 4 having a low concentration due to water absorption, the heater 5 is operated without circulating the hygroscopic liquid L in the feed pipe 6 and the return pipe 7. Then, the hygroscopic liquid L is heated to a predetermined high temperature, the moisture contained in the hygroscopic liquid L evaporates from the upper surface of the tank 4 into the atmosphere, and the hygroscopic liquid L
Is concentrated and regenerated by dehydration. As described above, since the hygroscopic liquid in the tank 4 is heated and regenerated by evaporation of water, it is possible to circulate the hygroscopic liquid in a pipe provided with a concentrating unit having a pump, a heater, and a fan to concentrate and regenerate the liquid. As a result, the structure is simple, the loss due to heat dissipation is extremely small, and the energy efficiency during regeneration is greatly improved.

In the dehumidifying / regenerating apparatus of claim 2, the feed pipe 6
A pump 9 is provided on the dehumidifying module 1 side of the cooler 8. Therefore, since the cooled low-temperature hygroscopic liquid flows through the pump 9, the pump 9 using the high-temperature hygroscopic liquid
It is possible to prevent corrosion and failure of the. In the dehumidifying / regenerating apparatus according to the third aspect, the upper surface of the tank 4 is covered with the lid 14 in which the exhaust duct 15 whose tip portion bends at a predetermined angle is provided upright. Therefore, when the moisture in the hygroscopic liquid is boiled by heating with the heater during regeneration, even if the hygroscopic liquid L is scattered from the liquid surface to the outside, it is blocked by the lid 14 and the exhaust duct 15 and hardly comes out. External equipment will not be corroded by the hygroscopic liquid.
Further, the heating efficiency of the heater 5 is improved as compared with the case where the upper surface of the tank 4 is opened.

In the dehumidifying / regenerating apparatus of the fourth aspect, the upper surface of the tank is covered with the lid 14 in which the exhaust duct 15 is erected.
A separator plate 18 is provided on the inner surface of the exhaust duct 15. Therefore, the hygroscopic liquid L scattered from the liquid surface due to boiling of water during regeneration is blocked by the separator 18 to be further prevented from being discharged to the outside, and corrosion of the external equipment is further prevented. . In the dehumidifying / regenerating apparatus of the fifth aspect, the tip end portion 19 of the exhaust duct 15 is bent and immersed in the water W in the water tank 20. Therefore, the hygroscopic liquid L that is about to go out
Are all trapped in the water, and the hygroscopic liquid L is never released to the outside.

Since the predetermined low temperature, high concentration hygroscopic liquid L in the tank 4 has a predetermined volume, if the flow rate Q of the low temperature, high concentration hygroscopic liquid to the dehumidifying module 1 is reduced, long-term operation becomes possible. However, while the dehumidifying capacity immediately after the operation rises slowly, when the flow rate Q is increased, the dehumidifying capacity rapidly increases with the start of the operation, but decreases immediately thereafter.
In the dehumidifying / regenerating apparatus according to claim 6, the liquid feeding flow rate Q of the pump 9
However, since it is controlled by the controller 10 so as to increase in the initial stage of the operation, it is possible to perform the dehumidifying operation for a long time while making the dehumidifying capacity at the start-up steep.
In the dehumidifying / regenerating apparatus according to claim 7, the controller 10 controls the liquid supply flow rate Q of the pump 9 so as to increase even at the end of the operation. Therefore, although the time of the entire moisture absorption process is somewhat reduced, it is possible to prevent the dehumidification ability of the hygroscopic liquid at the end of the operation from rapidly decreasing.

[0012]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. FIG. 1 is a configuration diagram showing an example of a dehumidifying / regenerating apparatus using the hygroscopic liquid of the present invention. In this dehumidifying / regenerating device, a large number of water vapor permeable membrane tubes 3, 3, ... Are arranged in the longitudinal direction (perpendicular to the paper surface of FIG. 1) so as to penetrate the container 2, and the inside of each tube 3 is A pair of dehumidification modules 1 for absorbing the water contained in the flowing indoor air into the LiCl aqueous solution which is a hygroscopic liquid circulating in the container outside each tube 3.
And a tank 4 having a heater 5 for storing the LiCl aqueous solution L
And a feed pipe 6 and a return pipe 7 that connect the dehumidifying module 1 and the tank 4 so that the LiCl aqueous solution L circulates, and the feed pipe 6 for cooling the circulating LiCl aqueous solution.
In order to pump the LiCl aqueous solution,
A pump 9 provided in the feed pipe 6 on the dehumidification module 1 side of the cooler 8 and a controller 10 for controlling the liquid flow rate of the pump 9 according to the operation timing are provided.

The dehumidifying module 1 has a fan 11 for feeding indoor air into each tube 3, while branch pipes 6a, 6b to the dehumidifying module of the feed pipe 6 are provided with open / close valves 12, respectively. The tank 4 covers the outer periphery except the upper surface with a heat insulating material 13, and the upper surface has a tip portion of 9
A lid 14 in which an exhaust duct 15 that bends at an angle of 0 ° is erected
Covered with. The cooler 8 cools the high-concentration LiCl aqueous solution sent to the dehumidifying module 1 in the feed pipe 6, and specifically, the spiral pipe 16 for air cooling shown in FIG. 2 (A). Alternatively, the double heat exchange pipe 17 shown in FIG. 2B may be formed by joining the LiCl aqueous solution pipe 17a and the cooling liquid pipe 17b.

FIG. 3 shows the exhaust duct 15 at the top of the tank 4.
3A, a plurality of separator plates 18 for preventing the release of the LiCl aqueous solution L to the outside are provided on the inner surface of the exhaust duct 15, or as shown in FIG. 3B. As shown, the tip portion 19 of the exhaust duct bent in a U shape at an angle of 180 ° can be immersed in the water W in the water tank 20.

The controller 10 controls the liquid supply flow rate Q of the pump 9 for pumping the LiCl aqueous solution L to the dehumidifying module 1 as shown in FIG.
As shown in (A), control is performed such that the amount increases at the beginning and end of the operation and decreases at other times. The control of the liquid supply flow rate Q is performed by changing the rotation speed of the pump 9,
The pump 9 having a constant rotation speed can be controlled to be turned on and off. Since the volume of the high-concentration LiCl aqueous solution L stored in the tank 4 for absorbing moisture is constant, FIG.
As shown in (B), if the liquid flow rate Q is reduced, long-term operation is possible as indicated by the broken line in the figure, but the dehumidification capacity (water absorption per unit time) at the beginning of operation becomes slow to rise. In addition, the dehumidification capacity at the end of operation drops sharply. On the other hand, when the liquid delivery flow rate Q is increased, the dehumidifying ability rapidly increases with the start of operation as shown by the solid line in FIG. 4B, but immediately thereafter, the dehumidifying ability decreases. Therefore, by increasing the liquid delivery flow rate Q at the beginning and end of the operation,
As shown by the solid line, the rising of the dehumidifying ability at the start is made steep, the dehumidifying ability at the end of the operation is prevented from being sharply reduced, and the dehumidifying operation can be performed for a relatively long time with the substantially uniform dehumidifying ability. In this case, the small value of the liquid supply flow rate Q is such that the area under the curve is the total water absorption of the LiCl aqueous solution in the tank 4 when the full scale of the time axis of FIG. Set to be quantity.

Regarding the operation of the dehumidifying / regenerating apparatus having the above-mentioned structure,
Next, referring to FIG. First, when dehumidifying the room during the daytime, the LiCl aqueous solution L stored in the tank 4 is made to have a predetermined high concentration, and the cooler 8 and the pump 9 provided in the feed pipe 6 are operated to make the high concentration LiCl. The aqueous solution L is sent from the tank 4 to the dehumidification module 1. Then, the high-concentration LiCl aqueous solution L is cooled by the cooler 8 at a predetermined low temperature (for example, 2
It is cooled to 0 ° C.), circulates inside the container 2 outside each tube 3 of the dehumidification module 1, and absorbs moisture contained in the room air flowing inside each tube 3 through the tube membrane. The LiCl aqueous solution having a low concentration due to water absorption is returned to the tank 4 through the return pipe 7, and the room is dehumidified by the circulation of the LiCl aqueous solution. Since the cooler 8 needs to cool only the LiCl aqueous solution sent to the dehumidifying module 1 instead of the entire LiCl aqueous solution in the tank 4, a small cooling capacity is sufficient, and the apparatus can be downsized and inexpensive. Can be achieved. Moreover, since the LiCl aqueous solution is pressure-fed to the dehumidifying module 1 by the pump 9, the LiCl aqueous solution can be reliably supplied, and the low temperature LiCl aqueous solution flows in the downstream side of the cooler 8, so that the high temperature LiCl aqueous solution flows. Corrosion and failure of the pump 9 due to the aqueous solution can be prevented, and long-term use becomes possible.

Next, when regenerating the LiCl aqueous solution in the tank 4 having a low concentration due to water absorption at night by using inexpensive night power, the cooler 8 and the pump 9 are deactivated and the opening / closing valve 12 is opened. Close and feed the LiCl aqueous solution pipe 6, return pipe 7
The heater 5 is operated without circulating it. Then, the LiCl aqueous solution L in the tank 4 is heated to a predetermined high temperature (for example, 140 to 150 ° C.), and the water contained in the LiCl aqueous solution boils as shown in FIG. Released into the atmosphere, the LiCl aqueous solution is concentrated and regenerated by dehydration. As described above, since the LiCl aqueous solution L in the tank 4 is heated to be regenerated by boiling water, the LiCl is connected to the pipe 37 having the pump 36, the heater 35, and the concentration unit 33 with the fan 34 described in FIG. As compared with the case of concentrating and regenerating the aqueous solution by circulating it, the structure of the apparatus can be simplified, the cost can be reduced, and the loss due to the heat radiation of the heating LiCl aqueous solution can be remarkably reduced. From 50% to about 90%. In addition, in the above-mentioned embodiment, since the regeneration is performed by using the cheap nighttime electric power, the running cost can be reduced, and the heat dissipation loss is further reduced because the tank 4 is covered with the heat insulating material 13.

As the water is boiled from the LiCl aqueous solution L in the tank 4 by the heating of the heater 5, the LiCl aqueous solution scatters from the liquid surface to the outside as shown by the arrow in FIG. 1, but the scattered LiCl aqueous solution. Is shielded by the lid 14 and the exhaust duct 15 which is bent at a right angle, and when a separator 18 as shown in FIG. 3A is provided in the exhaust duct, it is further shielded by the separator 18 and almost completely exposed to the outside. It does not come out, and there is no risk of external equipment being corroded by the LiCl aqueous solution. Further, when the tip portion 19 of the exhaust duct 15 is bent in a U shape as shown in FIG. 3 (B) and immersed in the water W in the water tank 20, the LiCl aqueous solution that is going out to the outside is All of them are captured and never released to the outside. Therefore, there is no problem due to the release of the LiCl aqueous solution.

Further, as described with reference to FIG. 4 (A), the liquid feed flow rate Q of the pump 9 is controlled by the controller 10 so as to be increased at the beginning and end of the operation and decreased at other times. Therefore, compared with the case where the liquid supply flow rate Q is constant, the dehumidifying capacity at the start-up is made sharper, the dehumidifying capacity at the end of the operation is prevented from decreasing sharply, and the dehumidifying capacity is substantially uniform for a relatively long time. Dehumidification operation becomes possible.

[0020]

As is apparent from the above description, claim 1
The dehumidifying and regenerating apparatus using the moisture absorbing liquid of No. 1 has a dehumidifying module for absorbing moisture contained in room air flowing to the other side of the membrane into the moisture absorbing liquid circulating through one of the membranes through the water vapor permeable membrane, and a heater. A tank that stores the hygroscopic liquid, a feed pipe and a return pipe that connect the dehumidifying module and the tank so that the hygroscopic liquid circulates, a pump that pumps the hygroscopic liquid under pressure, and a circulating pipe that is provided in the feed pipe. Since a cooler for cooling the hygroscopic liquid is provided, the cooler can be made smaller and less expensive than the case where all the hygroscopic liquid in the tank is cooled. Compared to the installed playback device, the configuration is simplified,
Moreover, the loss due to heat dissipation is extremely small, and the energy efficiency at the time of regeneration can be greatly improved, and the running cost of the device can be reduced.

In the dehumidifying / regenerating apparatus of the second aspect, since the pump is provided on the dehumidifying module side of the cooler of the feed pipe, a low-temperature hygroscopic liquid flows through the pump, so that the pump is not corroded or damaged. Can be prevented. In the dehumidifying / regenerating apparatus according to claim 3, since the upper surface of the tank is covered with a lid provided with an exhaust duct whose tip portion bends at a predetermined angle, moisture absorption that scatters from the liquid surface to the outside due to boiling of water. The liquid is almost not leaked to the outside by being blocked by the lid or the exhaust duct, and it is possible to prevent the external device or the like from being contaminated or corroded by the hygroscopic liquid, and the heating efficiency by the heater is improved.

In the dehumidifying / regenerating apparatus of the fourth aspect, since the upper surface of the tank is covered by the lid in which the exhaust duct is erected, and the separator is provided on the inner surface of the exhaust duct, the hygroscopic liquid scattered is It can be prevented from being released to the outside by being shielded by the separator plate, and it is possible to prevent the external equipment or the like from being contaminated or corroded by the hygroscopic liquid. In the dehumidifying / regenerating apparatus of the fifth aspect, since the bent tip end portion of the exhaust duct is immersed in the water in the water tank, all the hygroscopic liquid is trapped in the water and is not discharged to the outside.

In the dehumidifying / regenerating apparatus according to the sixth aspect, the liquid feed flow rate of the pump is controlled by the controller so as to increase at the initial stage of the operation. The dehumidifying operation can be performed. In the dehumidifying / regenerating apparatus according to the seventh aspect, the controller controls the liquid supply flow rate of the pump so as to increase even at the end of the operation, so that the dehumidifying ability of the hygroscopic liquid at the end of the operation can be prevented from rapidly decreasing.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a dehumidifying / regenerating apparatus using a hygroscopic liquid according to the present invention.

FIG. 2 is a diagram showing a specific example of the cooler of the above embodiment.

FIG. 3 is a diagram showing a modification of the exhaust duct of the above embodiment.

FIG. 4 is a diagram showing the flow rate of the liquid fed by the pump of the above embodiment,
It is a figure which shows the time change of the dehumidification ability when making it constant.

FIG. 5 is a configuration diagram showing a conventional dehumidifying / regenerating device.

[Explanation of symbols]

1 ... Dehumidification module, 2 ... Container, 3 ... Tube, 4 ... Tank, 5 ... Heater, 6 ... Feed pipe, 7 ... Return pipe, 8 ...
Cooler, 9 ... Pump, 10 ... Controller, 14 ... Lid, 15 ...
Exhaust duct, 18 ... Separator plate, 19 ... Tip of U-shaped exhaust duct, 20 ... Water tank, L ... LiCl aqueous solution (hygroscopic liquid),
W ... water.

Claims (7)

[Claims] 1. A hygroscopic liquid diluted with water while absorbing moisture in the air into the hygroscopic liquid (L) to dehumidify the room.
In a dehumidification / regeneration device using a hygroscopic liquid that removes water from (L) and regenerates the hygroscopic liquid, the hygroscopic liquid (L) circulating through the water vapor permeable membrane (3) to one of the membranes (3) is A dehumidifying module (1) that absorbs the water contained in the indoor air flowing through the other side of the membrane (3), and a tank that has a heater (5) and stores the above-mentioned hygroscopic liquid (L)
(4) and the dehumidifying module so that the hygroscopic liquid (L) circulates.
A feed pipe (6) and a return pipe (7) that connect the (1) and the tank (4), a pump (9) that pressure-feeds the hygroscopic liquid (L), and the feed pipe (6). A dehumidifying / regenerating apparatus using a hygroscopic liquid, comprising a cooler (8) for cooling the circulating hygroscopic liquid (L). 2. The dehumidifying / regenerating apparatus according to claim 1, wherein the pump (9) is provided closer to the dehumidifying module (1) than the cooler (8) of the feed pipe (6). 3. The dehumidifying regeneration according to claim 1, wherein the tank (4) has an upper surface covered with a lid (14) provided with an exhaust duct (15) whose tip portion bends at a predetermined angle. apparatus. 4. The tank has an upper surface covered with a lid (14) provided with an exhaust duct (15), and prevents the hygroscopic liquid (L) from being discharged to the inner surface of the exhaust duct (15). The dehumidifying / regenerating apparatus according to claim 1 or 2, further comprising a separator (18). 5. A tip portion (19) of the exhaust duct (15)
The dehumidifying / regenerating apparatus according to claim 3 or 4, wherein is bent and is immersed in the water (W) in the water tank (20). 6. The dehumidifying / regenerating apparatus according to claim 1, wherein the liquid supply flow rate (Q) of the pump (9) is controlled by the controller (10) so as to increase at the initial stage of operation. 7. The dehumidifying / regenerating apparatus according to claim 6, wherein the controller (10) controls the liquid supply flow rate (Q) of the pump (9) so as to increase even at the end of the operation.