JPH09303819A - Dehumidifying element including cooling pipe, and dehumidifying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a dehumidifying apparatus capable of easily cooling a dehumidifying plate and easily removing water from a dehumidifying element. SOLUTION: A dehumidifying plate including a dehumidifying member via a vent gap is superimposed into a multi-layer through a vent gap 6, and a cooling pipe 4 through which a refrigerant flows is provided in a dehumidifying element 1 penetrating the dehumidifying plate 5 and the vent gap 6, and further solenoid valves 13a, 13b, 13c, and 13d are provided on the cooling pipe 4. The dehumidifying element 1 is provided in a casing both ends of which are opened, and regeneration means are opposed putting part of both end surfaces of the dehumidifying element 1 therebetween, and further hot air is sent to a wet part of the dehumidifying element 1 to regenerate that part with regeneration means. In this case, any of the solenoid valves of the dehumidifying element during regeneration is closed, and after a regeneration processing ity is again opened to flow a refrigerant through the cooling pipe 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidifying element used for air conditioning equipment and the like to dehumidify air and a dehumidifying device using the dehumidifying element.

[0002]

2. Description of the Related Art Conventionally, a dehumidifying element is generally one in which a glass fiber paper or the like impregnated with a dehumidifying material such as silica gel is formed into a corrugated or flat plate shape to form a dehumidifying plate, and these are laminated to form a honeycomb structure inside. It was target. The dehumidifying material contained in the dehumidifying element is generally known to have an excellent dehumidifying effect when used at a low temperature, as disclosed in Japanese Utility Model Publication No. 59-79735.

However, in the case of the laminated dehumidifying plate having the above-mentioned honeycomb structure, due to heat of condensation caused by dehumidification of the dehumidifying material and heat flowing into the dehumidifying material from the outside when the ambient temperature is high, Alternatively, when the dehumidifying element is regenerated, there is a disadvantage that the temperature of the dehumidifying material rises due to the heat transferred to and remaining in the dehumidifying material due to the hot air used for the dehumidifying element, which reduces the dehumidifying efficiency of the dehumidifying element.

On the other hand, the dehumidifying apparatus is actually fair 6-28168.
As shown in the publication, a dehumidifying element is provided in a case whose both ends are open, and a regeneration means for circulating hot air is sandwiched across the dehumidifying element across a part of both end surfaces of the dehumidifying element. It is known that the regenerating means on both sides of the dehumidifying element are simultaneously moved along the both end faces of the dehumidifying element by an operating mechanism so as to remove the water in the area where the regenerating means acts from the dehumidifying element. ing.

In this dehumidifying device, the temperature of the dehumidifying element rises due to the heat generated during the dehumidifying step and the heat transferred to and remaining in the dehumidifying material due to the hot air used at the time of regeneration, and the dehumidifying efficiency of the dehumidifying element increases. Reduce.

Further, as shown in Japanese Utility Model Publication No. 59-79735, a disk-shaped rotor containing a hygroscopic material rotated by a motor and a heat exchanger for cooling are alternately provided, and the rotor and the cooling heat exchanger are provided. Some heat exchangers have multiple stages. This dehumidifying device, in which rotors and heat exchangers for cooling are provided alternately, is intended to remove the dehumidification or regeneration transfer heat stepwise, but there is a limit in the air blocking or cooling effect between dehumidification and regeneration, In order to remove the heat from the dehumidifying material inside and reduce the temperature of the dehumidifying material inside the rotor to make the dehumidification efficiency of the dehumidifier sufficient, it is necessary to install the rotor and cooling heat exchanger in a number of stages. High cost.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to obtain a dehumidifying element that can easily cool a dehumidifying plate and a dehumidifying device that can easily remove water from the dehumidifying element.

[0008]

The present invention solves the above-mentioned inconveniences. The dehumidifying element of the present invention has a dehumidifying plate containing a dehumidifying material through a ventilation gap as described in claim 1. It is characterized in that a cooling pipe through which the refrigerant flows is provided so as to be laminated in multiple layers and penetrate the dehumidifying plate and the ventilation gap.

With this configuration, the moist air passes through the dehumidifying element arranged in the case, comes into contact with the dehumidifying material in the dehumidifying element and is dehumidified, so that the discharged air is dried. During this dehumidification, the dehumidifying material in the dehumidifying element is heated due to the heat generated during the dehumidifying step, but a refrigerant such as cooling water is circulated through the cooling pipe to cool the dehumidifying plate and remove the heat from the dehumidifying material. Remove. Further, the dehumidifying device of the present invention is claim 2.
As described above, the dehumidifying element is provided in the case with both ends open, and the regenerating means sandwiching a part of both end faces of the dehumidifying element are provided so as to face each other. In the dehumidifying device adapted to be moved along both end faces of the dehumidifying plate, the dehumidifying plates containing the dehumidifying material are stacked in multiple layers through the ventilation gap, and the cooling pipe through which the refrigerant flows passes through the dehumidification plate and the ventilation gap. And a means for interrupting the flow of the refrigerant in the cooling pipe of the dehumidifying element on which the regenerating means operates, according to the movement of the regenerating means.

With this structure, the dehumidifying element that has absorbed moisture in the dehumidifying step regenerates and regenerates the dehumidifying plate of the dehumidifying element by sending hot air under pressure by the regenerating means provided with a part of the dehumidifying element interposed therebetween. Further, the regenerating means is moved by the operating mechanism to sequentially dry the dehumidifying plates in the dehumidifying element to regenerate the dehumidifying element. At this time, if the refrigerant is flowing in the cooling pipe, the drying efficiency of the hot air is reduced,
According to the movement of the regenerating means, the refrigerant is blocked from flowing into the cooling pipe in the area being regenerated.

After the completion of the regeneration, the refrigerant is sequentially flown again through the cooling pipe to cool the dehumidifying plate to remove the transferred heat from the dehumidifying material and promptly restore the dehumidifying efficiency of the dehumidifying element and the dehumidifying device.

[0012]

1 is a dehumidifying element. The dehumidifying element 1 comprises a dehumidifying unit 2, side plates 3 provided on both sides of the dehumidifying unit 2, and a cooling pipe 4. In the illustrated case, the dehumidifying unit 2 has four dehumidifying units 2a, 2b, 2c and 2d arranged in a line, but a single dehumidifying unit may be used.

As shown in FIG. 2, the dehumidifying unit 2 has a dehumidifying material layer 7 in which a dehumidifying plate 5 is laminated and has a honeycomb structure having a ventilation gap 6 inside, and ends provided above and below the dehumidifying material layer 7. It is composed of plates 8 and 8 and partition plates 9 and 9 provided on both sides of the dehumidifying material layer 7. The dehumidifying plate 5 is made of glass fiber paper or the like in which a dehumidifying material such as silica gel is impregnated, and is composed of a corrugated corrugated plate 5a and a flat plate 5b.

As shown in FIG. 2, the cooling pipe 4 passes through the dehumidifying material layer 7 inside the dehumidifying unit 2 and circulates a coolant such as cooling water. As shown in FIG. 1, a supply pipe 10 for supplying the refrigerant is connected to a cooling pipe 4 via a cooling header 11. The discharge pipe 12 discharges the warmed refrigerant to the outside.
The cooling pipe 4 has one ends 4a-1, 4a-2, 4a-3, 4a.
-4 to the solenoid valves 13a, 13b, 13c, 13
The branch pipes 10a, 10b, 10c of the cooling header 11 are connected via the means 13 for blocking the flow of the refrigerant such as d into the cooling pipe.
10d, the other ends 4b-1, 4b-2, 4b-3,
4b-4 to the branch pipes 12a, 12b, 12 of the discharge pipe 12.
c, 12d.

As shown in FIGS. 3 and 4, in order to form the dehumidifying material layer 7, holes 7b and 8a having a diameter slightly larger than the outer diameter of the cooling pipe 4 are formed in each of the layer unit 7a and the end plate 8. The dehumidifying plate 5 including the corrugated plate 5a and the flat plate 5b.
To form a layer unit 7a, and the layer unit 7a
A plurality of a are stacked on the end plate 8. In FIG. 4, 14 is a cooling fin, and the cooling fin 14 is provided in a space provided between the layer units 7a, 7a. A hole 14a having a diameter slightly larger than the outer diameter of the cooling pipe 4 is also formed in the center of the cooling fin 14, and a flange portion 14b is formed at the inner end of the cooling fin 14.
Is provided.

The cooling pipe 4 is inserted through the layer unit 7a, the holes 7b and 8a of the end plate 8 and the hole 14a of the cooling fin 14, as shown in FIGS. Further, as shown in FIG. 4, the dehumidifying material layer 7 is formed by sequentially stacking the next layer unit 7a, which has been drilled in the same manner as the holes 7b and 8a, and the cooling fin 14. Finally, another end plate 8 is also drilled, which is similar to the holes 7b and 8a. Next, the cooling pipe 4 is expanded by a well-known expanding device so that the layer units 7a and the flange portions 14b of the cooling fins 14 are integrated with the cooling pipe 4. Each tip of the inserted cooling pipe 4 projects from the end plates 8 and 8, and the tip is connected by a U-shaped pipe 15 to form a cooling coil as shown in FIG. The dehumidifying material layer 7
The partition plates 9 on both sides of the dehumidifying material layer 7 and the cooling fins 1 are
It is attached to the end plates 8 or 8 before or after stacking 4 and the like.

As shown in FIG. 1, moist air is sent to the dehumidifying element 1 from the direction of arrow A, and when passing through the dehumidifying element 1, the dehumidifying units 2a and 2b provided in the dehumidifying element 1 respectively. The discharged air B is dehumidified by the moist air coming into contact with the dehumidifying materials in 2c and 2d.

The dehumidifying device 16 of the present invention is connected in front of the portion where the dehumidified air is used. The dehumidifying element 1 shown in FIG. 1 is inserted into the case 17 shown in FIGS. 5 to 7 whose both ends are open, and a hole corresponding to the cooling pipe 4 is previously formed in the upper wall 17a of the case 17. The dehumidifying units 2a, 2
Ends 4a, 4b of the cooling pipe 4 protruding from b, 2c, 2d
Respectively project from the case 17 to the outside of the case 17. FIG.
As shown in FIG. 1, the dehumidifying element 1 has its side plate 3
The attachment portions 3a and 3b provided on the above are fixed to the flange portions 17b and 17b inside the case 17 by binding.

The upper and lower spaces formed between the case 17 and the dehumidifying element 1 are closed by, for example, a plate member.

As a result, as shown in FIG. 6, the inside of the case 17 is divided into the air supply chamber 18 and the exhaust chamber 19 by the fixed dehumidifying element 1. Further, as shown in FIG. 5, the end portion 4a- of the cooling pipe 4 of each dehumidifying unit 2 is
1, 4a-2, 4a-3, 4a-4 through the solenoid valves 13a, 13b, 13c, 13d cooling head 1
1 branch pipe 10a, 10b, 10c, 10d,
The other ends 4b-1, 4b-2, 4b-3, 4b-4 are connected to the branch pipes 12a, 12b, 12 of the discharge pipe 12 as described above.
c and 12d, respectively.

On both sides of the dehumidifying element 1 in the case 17, that is, in the air supply chamber 18 and the exhaust chamber 19 of the case 17,
Ventilation openings 20a, 21a of the same shape and the same size that cross a part of both side action areas of the dehumidifying element 1, that is, one of the dehumidifying units 2a to 2d in the case of FIG.
The box-shaped regeneration ventilation ducts 20 and 21 having the above are opposed to each other with the dehumidifying element 1 as an intermediate, and the ventilation opening 2 is provided.
0a and 21a are moved along the surface of the dehumidifying element 1 while being substantially in contact with each other. The ventilation ducts 20, 2
The through holes 20b and 21b opened in a part of the side surface of 1 are connected to the case 17 via the bellows tubes 20c and 21c, respectively.

A drive shaft 22 is mounted on the outside of each of the ventilation ducts 20 and 21 in the longitudinal direction thereof, and
With a small forward / reverse switching type motor 23. The pinions 24, 24 fixed to both sides of the drive shaft 22 are attached to the case 17
The motors 23 are engaged with the teeth of racks 25, 25 fixed laterally on the upper and lower sides of the inside so that the ventilation openings 20a, 21a move along the end faces of the dehumidifying element 1, respectively.
The ventilation ducts 20 and 21 are moved at an appropriate speed in conjunction with the rotation of the. When moving the ventilation ducts 20 and 21, the bellows tubes 20c and 21c are expanded and contracted. The bellows tube 21c of the ventilation duct 21 is connected through a case 17 to a blower tube 26 for reproduction having a heating facility (not shown),
The bellows pipe 20c of the ventilation duct 20 is connected to an exhaust pipe 27 having a fan (not shown) via a case 17.

As shown in FIG. 6, the moist air is supplied to the air supply chamber 1
8 is directed to the exhaust chamber 19, but the air is passed through the dehumidifying element 1, and the dehumidifying units 2c other than the dehumidifying unit 2c whose front surfaces are closed by the ventilation ducts 20 and 21.
Since it is dehumidified by the dehumidifying material contained in a, 2b, and 2d, the air is dehumidified and exhausted through the exhaust chamber 19.
During this dehumidification, the dehumidifying units 2a, 2 of the dehumidifying element 1
Since b and 2d carry heat generated during the dehumidifying step, the temperature of the dehumidifying material rises and the dehumidifying efficiency of the dehumidifying device 16 decreases. Refrigerant such as cooling water is circulated through the cooling pipes 4 provided in the dehumidifying units 2a, 2b, 2d to cool the dehumidifying units 2a, 2b, 2d to remove the heat from the dehumidifying material.

If the dehumidifying element 1 dehumidifies the air and leaves it as it is, the dehumidifying unit 2 becomes damp and cannot be sufficiently dehumidified. At that time, the hot air from the blower pipe 26 is pressure-fed from the ventilation opening 21a through the ventilation duct 21 to, for example, the moistened dehumidifying unit 2c, and passes through the dehumidifying unit 2c so as to pass from the ventilation opening 20a to the ventilation duct 20. Through the exhaust pipe 27 to the outside. Thereby, the moisture of the dehumidifying plate 5 is removed and the dehumidifying unit 2c is regenerated.
This is done continuously.

After regenerating one dehumidifying unit, the ventilation ducts 20 and 21 move to the next dehumidifying unit. As shown in FIG. 7, when the end of the dehumidifying element 1 is reached, the rotation of the motor 23 is switched. The movement of the ventilation ducts 20 and 21 is reversed to move back. By repeating this reciprocating motion, the dehumidifying units 1a, 2b, 2c, 2d are sequentially regenerated and dried to regenerate the dehumidifying element 1.

In this case, when the heat of the hot air used during regeneration is absorbed by the refrigerant, the dehumidifying effect on the dehumidifying element 1 is reduced, and the dehumidifying efficiency of the dehumidifying device 16 equipped with the dehumidifying element 1 is also reduced. Therefore, in the case of FIG. 5, that is, when the ventilation ducts 20 and 21 are at the positions corresponding to the dehumidifying units 2c, the solenoid valve 13c that operates in response to the operation of the ventilation ducts 20 and 21 is closed, and the dehumidifying unit during heat regeneration is closed. The refrigerant in the cooling pipe 4 of 2c is prevented from flowing.

When the ventilation ducts 20 and 21 move to the position shown in FIG. 7, the solenoid valve 1
3a is closed to prevent the refrigerant from flowing into the dehumidifying unit 2a, but the solenoid valve 13c is opened after the regenerating process of the dehumidifying unit 2c to recirculate the refrigerant into the cooling pipe 4 of the dehumidifying unit 2c, forcing the dehumidifying unit 2c. Heat to remove heat transferred from the hot air from the dehumidifying plate 5 of the dehumidifying unit 2c.

In the above embodiment, the solenoid valves 13a and 1a are provided as the means 13 for shutting off the flow of the refrigerant into the cooling pipe.
3b, 13c, 13d are used, but ventilation duct 2
A stop valve that is driven by a cam that interlocks with 0 and 21 may be provided, and the cooling header 11 may be provided with a water supply block member that mechanically blocks the flow of the refrigerant to the cooling pipe 4.

Although the dehumidifying element having the honeycomb structure has been described in the above embodiments, it goes without saying that a grid-lattice-like element having dehumidifying plates provided in the vertical and horizontal directions can be adopted. Also,
As the refrigerant introduced into the cooling pipe, a freon-based refrigerant can be used in addition to brine whose temperature is low in the refrigerator. When a CFC-based refrigerant is used, a direct expansion type refrigeration cycle can be configured using the solenoid valve of the above example as an expansion valve. Further, when the present invention is implemented as a dehumidifier equipped with a precooler, the cooling water of the cooling tower can be guided to the cooling coil.

[0030]

As described above, the dehumidifying element of claim 1 is forcibly cooled by the refrigerant flowing in the cooling pipe provided therein, and the heat generated during the dehumidifying step is generated from the dehumidifying material of the cooling element. As it is removed, the temperature of the dehumidifying material is lowered, and as a result, the dehumidifying efficiency of the dehumidifying element is improved.

In the dehumidifying apparatus of the second aspect, the dehumidifying element is cooled by the refrigerant, so that the dehumidifying efficiency is good, and since the refrigerant is caused to flow through the cooling pipe after the regeneration means is operated to perform the regeneration treatment, the dehumidifying element is forced. The cooling of the dehumidifying device allows the dehumidifying device to regain excellent dehumidifying efficiency.

[Brief description of drawings]

FIG. 1 is a perspective view of a dehumidifying element of the present invention.

FIG. 2 is a perspective view of a dehumidifying unit installed in the dehumidifying element of the present invention.

FIG. 3 is a schematic view showing an initial manufacturing process of the dehumidifying unit of FIG.

FIG. 4 is a schematic view showing a process of forming a dehumidifying material layer of the dehumidifying unit of FIG.

FIG. 5 is a front view of the dehumidifying device of the present invention.

6 is a side view taken along line VI-VI of FIG.

7 is a front view of the dehumidifying device of FIG. 5 when the regeneration ventilation duct comes to the end of the case.

[Explanation of symbols]

1 Dehumidifying element 4 Cooling pipe 5 Dehumidifying plate 6
Ventilation gap 13 Means for blocking the flow of refrigerant 17 Case 2
0,21 reproduction means 22,23,24,25 actuation mechanism

Claims (2)

[Claims] 1. A dehumidifying element, comprising: dehumidifying plates containing a dehumidifying material, which are stacked in multiple layers via a ventilation gap, and a cooling pipe, through which the dehumidification plate and the ventilation gap penetrate, to allow a refrigerant to flow therethrough. 2. A dehumidifying element is provided in a case whose both ends are open, and regenerating means sandwiching a part of both end faces of the dehumidifying element are provided so as to face each other, and these regenerating means on both sides are simultaneously actuated by the operating mechanism. In the dehumidifying device adapted to be moved along both end faces of the dehumidifying plate, the dehumidifying plates containing the dehumidifying material are stacked in multiple layers through the ventilation gap, and the cooling pipe through which the refrigerant flows passes through the dehumidification plate and the ventilation gap. A dehumidifying device, characterized in that it is provided with means for interrupting the flow of the refrigerant in the cooling pipe of the dehumidifying element on which the regenerating means acts in accordance with the movement of the regenerating means.