JPH0199630A - Dry dehumidifying method - Google Patents

Abstract

PURPOSE:To save energy by sending a mixture of the open air with air from a chamber room to the dehumidification side of a rotating drum, returning a part of the dehumidified air to the room and sending the remainder to the heat regeneration side of the drum after heating. CONSTITUTION:The open air a1 from a fresh-air inlet A and air a2 returned from a room R are sent by a fan F to a hygroscopic agent E2 in a rotating drum D on the dehumidification side, low humidity air a4 is obtd. by dehumidification and most of the air a4 is fed to the room R. The remainder of the air a4 is heated with a heater H and sent to the hygroscopic agent E1 in the drum D on the heat regeneration side as high temp.-low humidity air to regenerate the agent E1. The resulting high temp.-high humidity air is released into the air.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a dry dehumidification method, and more specifically, the present invention relates to a dry dehumidification method. This invention relates to a dry dehumidification method in which a regenerating dehumidifying material is heated and regenerated using high-temperature, low-humidity air obtained by taking out the air and heating it with a heater.

[Prior Art] A method for removing humidity in the air that can generally be carried out at low equipment cost is to use a refrigerator to cool and dehumidify the air. Because water freezes at 0℃, the cooling coil freezes, and the cold IJ
The limit at which J becomes impossible is absolute humidity 5.59/9 (n point temperature approximately +5° C.), and its management is troublesome.

Recently, as a dehumidifying device to replace the above-mentioned refrigerator, "Refrigerating and Air Conditioning Technology" published by the Japan Refrigeration Association.

VOL, 33. No. 392 [October 1995, No. 1
Pages 9 and 20 and published by Nikkan Kogyo Shimbun [Chemical Factory J
, VOL, 26. There is one introduced on page 97 of No. 8 reprint.

These devices use a rotary chemical dehumidifier as shown in FIG.

This rotary chemical dehumidifier has a cylindrical rotating body 1 which contains a dehumidifying and hygroscopic material 2 such as porous ceramic vapor, silicon dioxide vapor, and activated carbon fiber as a moisture absorbing base material, and further contains lithium chloride (LiCl) and the like. The dehumidifying rotor 3 to which the impregnated dehumidifying and hygroscopic material 2 is processed into a honeycomb shape is rotated at low speed via the driving means 4, and the partition member 5 is arranged on the end face side of the honeycomb-shaped dehumidifying and hygroscopic material 2. The regeneration air passage area and the processing air passage area are separated to prevent the regeneration air and the processing air from mixing.

[Problems to be Solved by the Invention] This rotary chemical dehumidifier according to the prior art requires two blower fans 7 for the processing side air system and the blower fan 10 for the regeneration side. The recycled air is taken in from the population of 8, and the air has high humidity in the summer (approximately 1
5 g/ to 9 to 21 g/tan, so in this high-humidity regeneration air, the low humidity condition of the dehumidified supply air is the air dew point temperature DP =
There is a problem that sufficient regeneration ability cannot be obtained to obtain a temperature of -30°C to 10°C.

Therefore, a large-capacity heater and cooler are required, which not only increases the size of the device but also increases equipment costs and poses a major problem in that it requires no flow.

The present invention eliminates these problems, and further provides a dry dehumidification method that is an energy-saving, space-saving device with high dehumidification efficiency, and has low equipment costs as a device for providing testing condition equipment for semiconductor parts, OA equipment, etc. The purpose is to

[Means for solving the problem] A relatively low-temperature, low-humidity mixed air of part of the outside air and the return air from the chamber room is sent to the moisture-absorbing material on the dehumidifying side inside the drum that rotates at a low speed using the air supply power of the fan. At the same time,
A portion of the low-humidity air that has adsorbed and dehumidified moisture through the dehumidifying treatment-side hygroscopic material is supplied to the chamber room, and the other portion of the low-humidity air is heated via a heater, and the high-temperature, low-humidity air of the heater is supplied to the chamber room. The air is blown to the heating and reproducing side moisture absorbing material in the drum by the air supply force of the fan, heating and regenerating the heating and reproducing side moisture absorbing material, and the high temperature and high humidity air generated by this heating and regeneration is sent to the outside by the fan. This is achieved by emitting.

[Function] The dry dehumidifier of the present invention uses a fan to send outside air taken in from the outside air intake port and return air from the chamber room to the dehumidifying treatment-side moisture absorbing material in the drum that constitutes the dehumidifier that rotates at low speed. By passing this moisture absorbing material with care,
Low-humidity air can be produced, and this low-humidity air can be supplied to the chamber room.

Also, a part of the low-humidity air flowing into the chamber room is branched off as regeneration-side air, taken out, and heated by a heater, and this heated high-temperature, low-humidity air is sent to the heating and regeneration-side hygroscopic material in the drum using the fan. At the same time, the high-temperature, high-humidity air that has passed through the moisture absorbing material and contains moisture is discharged into the atmosphere from the air discharge duct by the fan.

[Example] A dry dehumidifying device using the method of the present invention has a plurality of partition plates P as shown in FIGS. 1 to 3.
It is housed in a housing CB having two rooms R1 and R2.

As shown in Fig. 1, in the first room R1, there is a sirocco fan F rotated by a motor MF inside the outside air intake port A, and a chamber room R to be described later from the duct DU1 into the first room R1. A damper DPI which makes a part of the air a2 ll11iW is provided.

In addition, in the second room R2 there are figures 1, 4 and 5.
A rotary chemical dehumidification nRM as shown in the figure is implemented.

That is, the dehumidifier RM includes rails RA formed on the outer periphery of a cylindrical drum D, and a guide roller G that fits between the rails RA.
R, and is rotated at a low speed of about 10 to 30 times per hour via a belt BE placed between a motor M with a speed reducer and the drum D.

Note that if the drum D is rotatably supported by providing a shaft at its center, the rail RA and guide roller GR can be omitted.

Inside this drum D, a dehumidifier RM is installed, in which a porous biramic vapor or silicon dioxide paper impregnated with lithium chloride (Licl) or the like and processed into a honeycomb shape is attached as a moisture absorbing material E. ing.

Then, on one end side of the drum D constituting the dehumidifier RM, the air outlet f of the fan F is connected to the end face of the dehumidifying treatment side moisture absorbing material E2.
It is configured to send relatively low temperature and low humidity mixed air a3 of return air a2 from the chamber room and outside air a1.

In addition, the other end surface of the moisture absorbent material E2 is provided with this moisture absorbent material E2.
A duct DU2 for taking out the low-humidity air a4 which has been dehumidified by adsorbing moisture through the water vapor adsorption process and whose temperature has slightly increased due to the latent heat of condensation of the water vapor generated during this moisture adsorption, and a duct DU2 for sending a part of the low-humidity air a4 to the chamber room R. A duct DU3 and a damper DP3 are provided.

Further, the lower part of the duct [ ) U2 has the low humidity air a
Duct DLI4 and damper D for taking out the other part of 4
An air heater H is provided in the duct DU4 that passes through the tamper DP4, and the high-temperature, low-humidity air a5 that passes through the heater H is transferred to the drum D constituting the dehumidifying material RM.
The air is passed through the heat-regenerating side moisture-absorbing material E1 in the heat-regenerating side by the air supply force of the fan F, and the heat-regenerating side moisture-absorbing material E1 is heated and regenerated by this passage.

At this time, the high-temperature, high-humidity air a6 that passes through the heating and reproducing side moisture absorbing material E1 on the reflective surface of the drum D is transferred to the duct D.
It is designed to be released into the atmosphere via U5. Note that a cooling coil may be provided to cool and dehumidify the outside air a1, and an auxiliary fan may be provided to assist in discharging the high-temperature, high-humidity air a6 into the atmosphere.

Furthermore, the part indicated by the original number SL in FIG. 5 is an airtight seal ring having a slippery property.

The dry dehumidification device DRM used in this invention is installed in a building @ST as shown in Fig. 6, and a part of the air released from a chamber room R, which is also installed in the building, is transferred to a duct D.
The air is taken in as return air a2 to the first room R1 via the UI.

The high temperature and humid air a6 is configured to be discharged outside the building ST via a duct DU5, and the outside air a1 from outside the building ST can be taken into the air intake 08 via a duct DU8. Room R is equipped with an air release hole EX that releases air into building ST, and
An outside air intake port El is provided on the outer wall of the building.

The dehumidification system in the dry dehumidification method of the present invention is configured as described above, and the operation when this method is used to supply low-humidity air to a chamber room will be described below.

First, humidity, temperature, operating time, etc. are set using the control tIlfflf (not shown).

When the switch is turned on, the motor M1 drum D, heater H, and fan F that constitute the dry dehumidifier RM are started.

The outside air a1 taken in from the outside air intake port A and the return air a2 from the chamber room R are sent by a fan F to the dehumidification processing side moisture absorbent material E2 in the drum D that constitutes the dehumidifier RM which is rotating at a low speed. By passing through the moisture-absorbing material of the lever, low-humidity air a4 can be obtained, and this low-humidity air a4 can be supplied to the chamber room R.

In addition, the low humidity air a supplied to the chamber room R
A part of 4 is branched off as regeneration side air and taken out to heater H.
The heated high-temperature, low-humidity air a5 can be sent to the heating and reproducing side hygroscopic material E1 in the drum D using the fan to dry and regenerate the hygroscopic material E1.
The high-temperature, high-humidity air containing moisture is discharged into the atmosphere outside the casing from the air outlet by the fan.

[Effects of the Invention] As described above, according to the present invention, since a means for solving the above problems is adopted, a ventilation system in a dehumidification cycle system can be realized with only a single fan, which saves space. This method is also advantageous in terms of cost, and a part of the low-humidity air that has passed through the dehumidification treatment side moisture absorption material is supplied to the moisture absorption material E1 on the heating and regeneration side of the dehumidifier. Even if the Furukawa of the heater for raising the temperature of the low-humidity air to be supplied is made as small as possible, the moisture absorbing material E1 on the heating and reproducing side can be sufficiently regenerated, so that energy saving can be promoted, and the initial cost and waste can be reduced. 1. Reducing the secondary costs.
It has the effect of

[Brief explanation of the drawing]

Figures 1 to 6 all show one embodiment of the present invention, with Figure 1 being a sectional view showing the configuration of a dehumidifying device, and Figure 2 being a left side view of the device N shown in Figure 1. , Fig. 3 is a right side view of the device, Fig. 4 is a perspective view of the dehumidifier, Fig. 5 is an enlarged sectional view of the main parts of the dehumidifier, and Fig. 6 is an architectural diagram showing the relationship between the dehumidifier and the chamber room. The indoor layout system diagram, FIG. 7, is a schematic diagram showing an example of a conventional rotary chemical dehumidifier. al: outside air, al: return air from the chamber room, a3: relatively low temperature and low humidity mixed air, a4: low humidity air, a5: high temperature and low humidity air, a6: high temperature and high humidity air, D...Low speed rotating drum, E...Moisture absorbing material, El
... Moisture absorbing material on the heating and reproducing side, E2... Moisture absorbing material on the dehumidification processing side, F... Fan, H... Heater, R... Chamber room.

Claims (1)

[Claims] Part of outside air a1 and return air a from chamber room R
The moisture absorbing material E on the dehumidifying side in the drum D rotates at a low speed by the air supply force of the fan F, and the relatively low temperature and low humidity mixed air a3 with the drum D.
At the same time, a part of the low-humidity air A4, which has been dehumidified by adsorbing moisture through the dehumidifying treatment-side moisture-absorbing material E1 and whose temperature has slightly increased due to the latent heat of condensation of water vapor generated during moisture adsorption, is supplied to the chamber room R. At the same time, the other part of the low-humidity air a4 is heated via the heater H, and the heated high-temperature and low-humidity air a5 is sent to the drum D by the air supply force of the fan F.
The heating and regeneration side moisture absorbent material E2 is heated and regenerated by blowing air to the heating and regeneration side moisture absorbent material E2, and furthermore, the high temperature and high humidity air a6 generated by this heating and regeneration is discharged to the outside by the fan F. Dry dehumidification method.