JP2003240269A - Dehumidifying equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide dehumidifying equipment at a low cost. <P>SOLUTION: The dehumidifying equipment comprises a dehumidifier 12; a package type air conditioner 14; and a dry room 16. The dehumidifier 12 is provided with a processing part 18 to perform dehumidifying processing of a dehumidifying rotor 26, and a regenerating part 20 to effect regeneration of the dehumidifying rotor 26. An inlet chamber 22 is situated on the inlet 18A side of the processing part 18, and an outlet chamber 24 is situated on the outlet 18B side. Dry air from the processing part 18 and a part of return air from a dry room 16 are fed to the outlet chamber 24 and mixed together. Dry air after mixing is fed to the package type air conditioner 14 and cooled to a set temperature. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to dehumidifying equipment, and more particularly to dehumidifying equipment used in manufacturing plants for manufacturing lithium-ion batteries, or dehumidifying equipment such as a dry room for experiments.

[0002]

2. Description of the Related Art Lithium ion batteries used as batteries for personal computers, mobile phones, electric vehicles, etc., have various manufacturing processes, such as a mixing process of coating materials, a coating process of electrodes,
It is manufactured through an electrode cutting step, an electrode winding step, a container filling step, an electrolyte injection step, a caulking step, a packing step, and the like.
Among these manufacturing processes, the electrolytic solution injecting step handles an electrolytic solution that easily reacts with moisture, and therefore has a dew point of −60 ° C.
It is necessary to perform in a dry air environment of about (ppm). Therefore, the dew point temperature of the lithium-ion battery manufacturing plant is -6.
A dehumidification facility that supplies dry air at about 0 ° C is provided.

As shown in FIG. 2, the conventional dehumidifying equipment comprises a dry dehumidifier 1, a chiller refrigerator 2 and a dry room 3, and a casing 4 of the dehumidifier 1 is regenerated with a processing section 4A by a partition wall inside. It is separated from the portion 4B. The dehumidifying rotor 5 is rotated at a constant speed by the motor 6, and the processing unit 4A
And the reproducing section 4B are alternately passed.

A processing side fan 7 is provided in the processing section 4A, and by driving the processing side fan 7, outside air and return air from the dry room 3 are introduced into the processing section 4A. The introduced air passes through the dehumidifying rotor 5, so that moisture is adsorbed and removed by the dehumidifying agent of the dehumidifying rotor 5.

On the other hand, a reproducing side fan 8 is provided in the reproducing section 4B, and by driving this reproducing side fan 8,
The outside air is introduced into the reproduction section 4B. The introduced air is heated by the heater 9 and then passes through the dehumidifying rotor 5. Therefore, the water adsorbed on the dehumidifying rotor 5 is desorbed,
The dehumidifying performance of the dehumidifying rotor 5 is restored. As a result, a stable dehumidifying process can be performed in the processing unit 4A.

The dehumidifier 1 constructed as described above has a problem that the dry air becomes hot. That is, since the dehumidifying rotor 5 moves to the processing unit 4A in a warm state after passing through the high temperature regenerating unit 4B, the dry air dehumidified through the dehumidifying rotor 5 is heated to about 50 ° C. Therefore, in the conventional dehumidifying equipment, after cooling the dry air to the set temperature using the chiller refrigerator 2 having high cooling performance,
It was being supplied to dry room 3.

[0007]

However, the conventional dehumidifying equipment has a problem that the cooling heat source equipment of the chiller refrigerator 2 is required and the entire equipment becomes large. Therefore, it was difficult to construct a small-scale dehumidification facility such as a dry room for experiments.

Further, since the conventional dehumidifying equipment uses the expensive chiller refrigerator 2, there is a problem that the equipment cost is high.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a dehumidifying device at low cost.

[0010]

In order to achieve the above-mentioned object, the invention according to claim 1 cools dry air dehumidified by a dehumidifier by a cooling means, supplies it to a dry room, and returns it from the dry room. In the dehumidifying equipment for performing dehumidification by mixing return air mixed with outside air into the dehumidifier, a chamber for mixing a part of the return air with the dry air dehumidified by the dehumidifier, and a return introduced into the chamber It is characterized by having a damper for adjusting the air flow rate.

According to the present invention, the return air from the dry room is mixed with the dry air dehumidified by the dehumidifier, so that the temperature of the dry air decreases before being introduced into the cooling means. Therefore, a small-sized and low-cost cooling means can be used. This allows
The dehumidification equipment can be manufactured at low cost.

Further, according to the present invention, the return air from the dry room is divided into two, one is mixed with the outside air and introduced into the dehumidifier, and the other is mixed with the dry air after dehumidifying with the dehumidifier. I have to. Therefore, simply changing the opening of the damper, and the amount of return air mixed with the outside air,
It is possible to adjust the ratio of the amount of return air mixed with dry air. Therefore, as described in claim 2, by controlling the damper according to the temperature of the outside air and adjusting the air volume of the return air mixed with the outside air, the air having a stable temperature can be introduced into the dehumidifier. Thereby, a stable dehumidification process can be performed in the dehumidifier. According to the second aspect of the invention, the damper is controlled according to the temperature of the dry air after being mixed with the return air, so that the dry air after mixing can be controlled to a constant temperature. As a result, dry air having a stable temperature can be sent to the cooling means, which facilitates control of the cooling means.

The present invention is particularly effective when a dehumidifier having a processing section and a regenerating section is used as described in claim 3. In such a dehumidifier, air is passed through the dehumidifying means that has moved from the high temperature regeneration section to the processing section to perform dehumidification processing, so that the dry air after dehumidification has a very high temperature. However, the temperature of dry air can be easily lowered by applying the present invention. Thereby, the dehumidification equipment can be manufactured at low cost.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the dehumidifying equipment according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a sectional view showing a schematic structure of a dehumidifying equipment 10 according to the present invention.

As shown in the figure, the dehumidifying equipment 10 mainly includes a dry dehumidifier 12, a package type air conditioner 14,
It consists of a dry room 16.

The dehumidifier 12 comprises a processing section 18 and a regenerating section 20 which are separated from each other, an inlet chamber 22 on the inlet 18A side of the processing section 18, and an outlet chamber 24 on the outlet 18B side of the processing section 18.

The dehumidifying rotor 26 includes a processing section 18 and a regenerating section 2.
0 is arranged so as to penetrate through the motor 28
Is rotated at a constant speed by driving the processing unit 18
And the reproducing unit 20 are alternately moved. In addition, the dehumidifying rotor 26 is provided with a honeycomb-shaped nonwoven fabric impregnated with a dehumidifying agent such as lithium chloride or silica gel, and can absorb the moisture of the passing air.

Inside the processing section 18, a processing side fan 30 is provided.
Is provided. By driving the processing side fan 30, the air in the inlet chamber 22 is sucked into the processing portion 18, passes through the dehumidifying rotor 26, and is sent to the outlet chamber 24. Moisture contained in the air when passing through the dehumidifying rotor 26 is adsorbed and removed by the dehumidifying rotor 26. As a result, dry air is sent to the outlet chamber 24.

Inside the reproduction section 20, a reproduction side fan 32 is provided.
And a heater 34 are provided. Further, the inlet 20A of the regeneration unit 20 is connected to the outside air intake 36, and the outlet 20B of the regeneration unit 20 is connected to the exhaust port 38. Therefore, when the regeneration side fan 32 is driven, the outside air is sucked into the regeneration unit 20 through the outside air intake port 36, passes through the regeneration unit 20, and is exhausted through the exhaust port 38. When passing through the reproducing unit 20, the air is heated by the heater 34. Therefore, since the heated air passes through the dehumidifying rotor 26, the moisture adsorbed on the dehumidifying rotor 26 is desorbed.
As a result, the dehumidifying performance of the dehumidifying rotor 26 is restored, and the dehumidifying process can be stably performed when the dehumidifying rotor 26 passes through the processing unit 18 again.

The inlet chamber 22 is connected to the outside air intake 36 and the dry room 16. Therefore, when the processing-side fan 30 is driven, the outside air is sucked from the outside air intake 36 and a part of the return air is sucked from the dry room 16. The sucked outside air and the return air are mixed and then sent to the processing unit 18.

The outlet chamber 24 is connected to the dry room 16 via the air supply port 24A, and the air supply port 24 is also provided.
It is connected to the package type air conditioner 14 via B. The air supply port 24A and the air supply port 24B are provided side by side on the side surface away from the outlet 18B of the processing unit 18, and the air supply port 2
A partition plate 4 having a predetermined length is provided between 4A and the air supply port 24B.
0 is set. With respect to the partition plate 40, a damper 42 is provided on the air supply port 24A side, and the air supply port 2 is provided.
The amount of return air supplied from 4A can be adjusted. Further, a resistance plate 44 such as a punching plate is provided on the air supply port 24B side with respect to the partition plate 40, so that the air supplied to the air supply port 24B can be made uniform.

Inside the outlet chamber 24, the mixing adjusting plate 4 is provided at an intermediate portion between the air supply port 24A and the outlet 18B.
6 is provided. The mixing adjusting plate 46 is bent toward the outlet 18B so that the dry air from the outlet 18B and the return air from the air supply port 24A can be efficiently mixed. The dry air after mixing passes through the resistance plate 44 to be more uniformly mixed and sent to the air supply port 24B.

A temperature sensor 48 is provided near the air supply port 24B.
Is provided, and the temperature of the dry air after mixing is detected by the temperature sensor 48. The temperature sensor 48 is connected to the control device 50, which controls the temperature sensor 4
The opening degree of the damper 42 is adjusted based on the detected value of 8. Then, the temperature of the dry air after mixing is a predetermined value (for example, 30
℃) to control. For example, when the detected value is larger than the predetermined value, the opening degree of the damper 42 is increased and the air volume of the return air, which has a relatively low temperature, is increased. This lowers the temperature of dry air after mixing. Also,
When the detected value is smaller than the predetermined value, the opening degree of the damper 42 is reduced to reduce the air volume of the return air. This reduces the humidity of dry air after mixing.

Further, the control device 50 is connected to an outside air temperature sensor (not shown) for detecting the temperature of outside air, and by adjusting the opening degree of the damper 42 according to the detected value of this outside air temperature sensor, The ratio of the amount of return air flowing from the air supply port 24A to the outlet chamber 24 (hereinafter referred to as the outlet side air amount) and the amount of return air flowing from the inlet 18A to the inlet chamber 22 (hereinafter referred to as the inlet side air amount) Adjust. For example, in the summer when the detected value of the outside air temperature sensor is high, the opening amount of the damper 42 is decreased to make the inlet side air volume larger than the outlet side air volume. As a result, the air volume of the return air flowing into the inlet chamber 22 increases, and the high temperature outside air is sufficiently cooled. On the contrary, in the winter when the detected value of the outside air temperature sensor is low, the opening amount of the damper 42 is increased to make the inlet side air volume smaller than the outlet side air volume. By controlling the damper 42 in this way, it is possible to suppress fluctuations in the temperature of the air introduced into the processing unit 18 as much as possible, and it is possible to perform stable dehumidification processing in the processing unit 18.

Next, the operation of the dehumidifying equipment 10 configured as described above will be described.

The dry air dehumidified in the processing section 18 is introduced into the outlet chamber 24 while being heated to about 50.degree. On the other hand, the return air from the dry room 16 is usually about 20 ° C., although it varies depending on the usage conditions in the dry room 16, and a part of the return air is sent to the outlet chamber 24 from the air supply port 24A. Therefore, exit 1
The dry air sent from the 8B to the outlet chamber 24 is
The temperature is significantly reduced by being mixed with the return air sent from the air supply port 24A. At that time, since the opening degree of the damper 42 is adjusted according to the detection value of the temperature sensor 48 and the air volume of the return air is adjusted, the temperature of the dry air after mixing can be controlled to about 30 ° C.

As described above, according to the dehumidifying equipment 10, the outlet chamber 24 is provided at the outlet 18B of the processing section 18, and the return air from the dry room 16 is supplied to the outlet chamber 24 so as to be mixed with the dry air. Therefore, the temperature of dry air can be lowered to about 30 ° C. Therefore, the package type air conditioner 14 can be used as a cooling means for cooling the dry air. That is, the package type air conditioner 14
Can perform efficient cooling when the dry-bulb temperature of the suction air is about 30 ° C. or lower, but at a temperature higher than that, it is difficult to cool to the set temperature. In the present embodiment, the temperature of the dry air is lowered to about 30 ° C., so that the dry air can be cooled to the set temperature by using the package type air conditioner 14. The package type air conditioner 14 has a simpler structure and a very small size as compared with a chiller refrigerator and other coil type cooling devices. Therefore, by using the package type air conditioner 14, the dehumidification equipment 10 can be downsized. Further, since the package-type air conditioner 14 has a low equipment cost, the equipment cost of the dehumidifying equipment 10 can be significantly reduced.

Further, since the dehumidifying equipment 10 adjusts the opening degree of the damper 42 according to the temperature of the outside air to adjust the ratio of the outlet side air volume to the inlet side air volume, the air introduced into the processing section 18 is adjusted. Temperature fluctuations can be suppressed as much as possible, and the processing unit 1
In 8, stable dehumidification treatment can be performed.

Further, according to the dehumidifying equipment 10, the processing section 18
Since the outlet chamber 24 having the mixing adjustment plate 46 and the resistance plate 44 is provided at the outlet 18B, the electric equipment can be reduced and the cost can be reduced.

Further, since the dehumidifying equipment 10 uses the return air of the dry room 16 which is stable in temperature and humidity, the temperature and humidity of the dry air after mixing with the return air are also stable and controlled. Is easy.

The package type air conditioner 14 may be a water cooling type or an air cooling type. Further, the packaged air conditioner 14 may perform not only the dry air cooling process but also the dehumidifying process. As a result, the temperature and humidity of the dry air supplied to the dry room 16 can be accurately adjusted.

The bending angle θ of the mixing adjusting plate 46
Alternatively, the aperture ratio of the resistance plate 44 may be adjusted. In that case, the bending angle θ and the opening ratio may be adjusted according to the air volume of the dry air from the outlet 18B and the air volume of the return air from the air supply port 24A. As a result, the dry air and the return air can always be reliably mixed.

[0034]

As described above, according to the dehumidifying equipment of the present invention, the dehumidified dry air is mixed with the return air returned from the dry room. The temperature drops. Therefore, a small-sized and low-cost cooling means can be used. Thereby, the dehumidifying equipment can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a sectional view schematically showing the configuration of a dehumidification equipment according to the present invention.

FIG. 2 is a cross-sectional view schematically showing the configuration of a conventional dehumidification facility.

[Explanation of symbols]

10 ... Dehumidification equipment, 12 ... Dehumidifier, 14 ... Package type air conditioner, 16 ... Dry room, 18 ... Processing part, 20 ...
Regeneration part, 22 ... Inlet chamber, 24 ... Outlet chamber, 2
6 ... Dehumidifying rotor, 28 ... Motor, 30 ... Processing side fan,
32 ... Regeneration side fan, 34 ... Heater, 36 ... Outside air intake port, 38 ... Exhaust port, 40 ... Partition plate, 42 ... Damper, 4
4 ... Resistance plate, 46 ... Mixing adjustment plate, 48 ... Temperature sensor, 50 ... Control device

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F24F 11/02 102 F24F 11/02 102D

Claims (3)

[Claims] 1. Dry air dehumidified by a dehumidifier is cooled by a cooling means and supplied to a dry room, and return air returned from the dry room is mixed with outside air and introduced into the dehumidifier to perform dehumidification. In the dehumidification equipment, the dehumidification equipment is provided with a chamber for mixing a part of the return air with the dry air dehumidified by the dehumidifier, and a damper for adjusting an air volume of the return air introduced into the chamber. 2. A temperature sensor for detecting a temperature of dry air after mixing the return air, an outside air temperature sensor for detecting a temperature of the outside air, and a detection value of the outside air temperature sensor and a detection value of the temperature sensor. The dehumidifying equipment according to claim 1, further comprising: a control unit that controls the damper in accordance with the control unit. 3. The dehumidifier according to claim 1 or 2, wherein the dehumidifier includes a processing unit that performs dehumidification processing by the dehumidifying unit and a regenerating unit that regenerates the dehumidifying performance of the dehumidifying unit. Facility.