JPH0684821B2 - Batch type humidity controller - Google Patents

Description

TECHNICAL FIELD The present invention relates to a batch type humidity control device for dehumidifying and humidifying indoor air by using a dry type solid adsorbent, and particularly when the indoor temperature is 10 or more.
The present invention relates to a batch type humidity adjusting device suitable for adjusting the humidity of a freezer or the like which is maintained at a temperature of not higher than 0 ° C.

[Prior Art] FIG. 4 is a schematic perspective view showing a conventional dry dehumidifier for cold air and room temperature. The dehumidifying rotor 1 formed into a honeycomb shape with a solid adsorbent has a communication hole of a columnar shape extending in the thickness direction, and is installed with its central axis horizontal. This dehumidifying rotor 1 is driven by a motor (not shown)
It is rotationally driven in the direction of arrow 2 around its central axis.

The dehumidifying rotor 1 is divided into, for example, a moisture absorption zone (treatment zone) 3 in a 3/4 region of the surface thereof and a moisture desorption zone (regeneration zone) 4 in a remaining 1/4 region of the dehumidifying rotor 1. By means of the seals 5 fixedly arranged on the flat surfaces of both ends of the above, air flow passages for air passing through both zones 3 and 4 are individually formed.

For the treatment zone 3, a blower fan 7 is provided via a pipe 6.
As a result, air containing a large amount of water in the room is supplied, the humid air passes through the processing zone 3 of the dehumidifying rotor 1 to collect water, and dried air is discharged from the processing air discharge port side. . This dry air is supplied indoors.

On the other hand, the outside air taken in by the blower fan 9 is heated by the heater 10 and then supplied to the regeneration zone 4 through the pipe 8. Since this heated air has a large amount of saturated moisture, the moisture contained in the dehumidifying rotor 1 is released and becomes air containing a large amount of moisture and is discharged from the regeneration air discharge port side.
This dehumidified air is exhausted to the outside of the room.

Since the dehumidifying rotor 1 is continuously rotating in the direction of the arrow 2, the honeycomb-shaped adsorbent of the dehumidifying rotor 1 alternately and continuously dehumidifies the process air (water adsorption) and regenerates it with regenerated air (water desorption). Repeat. As a result, dry air is supplied from the outlet on the processing zone 3 side and humid air is discharged from the outlet on the regeneration zone 4 side.

Further, Japanese Utility Model Laid-Open No. 63-28115 discloses a batch type dehumidifying device. In this device, the first gas passage and the second gas passage are arranged with the regeneration gas passage in between, and when the air in the dehumidified chamber is returned to the room through the first gas passage, The dehumidifying element arranged in the first gas passage dehumidifies the flowing air, and the outside air heated by the heater is supplied to the second gas passage to regenerate the dehumidifying element arranged in the second gas passage. The used outside air is returned to the outside air through the regeneration gas passage. On the contrary, when returning the air dehumidified by the dehumidifying element arranged in the second gas passage to the inside of the dehumidified object,
The dehumidifying element in the gas passage is regenerated by heated outside air.
By repeating this alternately, the inside of the dehumidified chamber is dehumidified.

[Problems to be Solved by the Invention] However, in the above-described rotary drum type dry dehumidifier, seals 5 (only one seal 5 is shown in FIG. 4 are provided on both end surfaces of the dehumidifying rotor 1 in the air flow direction. Has been)
Although the processing zone 3 and the regeneration zone 4 are separated by arranging the above, it is practically difficult to completely separate the treatment air and the regeneration air in the dehumidifying rotor 1 by a mechanical seal. Therefore, from the processing zone 3 side to the reproduction zone 4 side, or conversely from the reproduction zone 4 side to the processing zone 3 side.
There is air leakage to the side. In particular, the leakage of the regeneration air from the regeneration zone 4 side to the treatment zone 3 side causes the high temperature regeneration air to flow into the treatment zone 3, thus making it difficult to obtain air with a low dew point.

In addition, since this rotary drum type device uses a dehumidifying rotor that is driven to rotate, the diameter of the dehumidifying rotor becomes extremely large, and the rotary sliding portion requires a seal of treated air and regenerated air. The mechanism is complicated and precise, and there are significant disadvantages in terms of manufacturing cost and maintenance.

Furthermore, when such a device is installed inside a narrow box such as a container that stores items used in a low temperature range, the rotor-type dehumidifier has a large dead space, so that the waste of space is extremely large. Become.

On the other hand, in the batch type dehumidifier described above, it is necessary to provide a large fan that occupies the entire cross section of the gas passage in order to evenly distribute the air in each gas passage. For this reason, the entire apparatus becomes large, and such an apparatus cannot be installed in a small space such as a freezer. Further, in this conventional technique, since the heater is arranged on the upstream side of the fan, hot air is supplied to the fan, so that the fan is significantly deteriorated. Furthermore, it is necessary to provide a regenerated gas passage outside the first and second gas passages, which makes maintenance of the apparatus difficult and also reduces manufacturing work efficiency.

The present invention has been made in view of such problems,
Batch type humidity control that avoids mixing between regenerated air and treated air, can dehumidify or humidify the room with high efficiency, has a simple structure, can be downsized and thin, and is easy to maintain. The purpose is to provide a device.

[Means for Solving the Problems] A batch type humidity adjusting device according to the present invention is arranged at a boundary between a case divided into first and second rooms and a first room and a second room. The gas is once circulated in a direction substantially perpendicular to the direction from the first room to the second room to
Blowing means for supplying gas from the room to the second room, the outdoor air intake and the indoor air intake provided in the case in the first room, and the case in the second room An outdoor air outlet and an indoor air outlet provided, an inlet opening / closing member that alternately opens and closes the outdoor air inlet and the indoor air inlet, and the outdoor air outlet and the indoor air outlet A discharge port opening / closing member that alternately opens and closes the outlet, a heater provided in the second chamber, and a hygroscopic material provided downstream of the heater in the second chamber in the gas flow direction. It is characterized by having.

[Operation] In the present invention, when the outdoor air intake port of the first room and the outdoor air exhaust port of the second room are opened and the indoor air intake port and the exhaust port are closed, the first case The outdoor air flows into the room through the intake port, is sent to the second room by the air blowing means, and is discharged to the outside through the heater and the hygroscopic material arranged in the second room. To be done. On the other hand, the first
When the indoor air intake of the room and the indoor air discharge port of the second room are opened and the outdoor air intake and the discharge port are closed, the air is blown from the first room to the first room by the air blower in the case. The indoor air is circulated and supplied into the room through the heater and the hygroscopic material in the second room.

In this case, the air blower is disposed at the boundary between the first chamber and the second chamber, and the gas is once passed in a direction substantially orthogonal to the direction from the first chamber to the second chamber. Since the air is sent from the first room to the second room, the blowing means can be made smaller than in the case where the gas is sent directly from each intake side to each discharge side in the case. It is possible to allow the gas to flow evenly in the case. Therefore, the case can be thinned.

Then, the flow of the outdoor air in the case and the flow of the indoor air in the case are alternately repeated, and the heater is driven at an appropriate timing to dehumidify or humidify the room.

That is, for example, while the outdoor air is flowing through the case, when the heater is driven to heat the outdoor air and then the moisture is passed through the moisture absorbent, the outdoor air absorbs the moisture of the moisture absorbent and a large amount of moisture is absorbed. Since the air becomes air and is discharged to the outside, when the indoor air then passes through the hygroscopic material, the indoor air is dried (dehumidified) and supplied to the room. Therefore, the room is dehumidified. In addition, the outside air is always subjected to a drying treatment of the hygroscopic material.

On the other hand, while the room air is flowing through the case, the heater is driven to heat the room air, and then the room air is passed through the moisture absorbent, the room air absorbs the moisture of the moisture absorbent and becomes humid air. Supplied indoors. Therefore, the room is humidified. The outside air always replenishes the moisture absorbent with water.

[Examples] Hereinafter, examples of the present invention will be specifically described with reference to the accompanying drawings.

1 (a) and 1 (b) are a side sectional view and a front sectional view showing a humidity adjusting device according to an embodiment of the present invention, respectively. In the case 11, a first chamber A is formed on the upstream side in the air flow direction, and a second chamber B is formed on the downstream side. A flat plate-shaped space is formed by these first and second chambers. The first room A and the second room B are partitioned by partition plates 25 and 26 which are parallel to each other, and a connecting plate 27 is bridged between the partition plates 25 and 26. The first room A is provided with an indoor air intake 12, and the second room B is provided with an indoor discharge port 13.

On the other hand, one side surface of the case 11 faces the outside of the room, and the side surface of the case 11 has an intake 14 for outdoor air near both ends in the longitudinal direction.
And an outlet 15 to the outside of the room are opened.

At the corners inside the case near the inlets 12 and 14, the shaft member 1
6 is rotatably installed so that its axial direction coincides with the width direction of the case 11, and a damper 17 is attached to the shaft member 16. Alternatively, one of the intake ports 14 is opened and the other is closed.

In addition, at the corners inside the case near the discharge ports 13 and 15,
Similarly, the shaft member 18 is rotatably installed with its axial direction aligned with the width direction of the case 11, and a damper 19 is attached to the shaft member 18. Like the damper 17, this damper 19 is also the discharge port 13 or the discharge port by the rotation of the shaft member 18.
It is designed such that one of the 15 is open and the other is closed.

In addition, the surfaces of the dampers 17 or the intakes 12 and 1 that contact each other.
It is preferable to fix a seal member such as rubber to at least one of the inner end portions of 4. This allows the damper
The inlets 12 and 14 can be closed with 17 with a high sealing property.

Further, it is preferable to similarly fix the sealing member on the surface of the damper 19 or the inner end portions of the discharge ports 13 and 15.

The shaft member 16 is adapted to be reciprocally rotated by a motor 20 at a center angle of about 90 °, whereby the damper 17 is rotated between the intake port 12 and the intake port 14 as shown by an arrow. .
Further, the shaft member 18 is also reciprocally rotated by the motor 21 at a central angle of about 90 °, which causes the damper 19 to rotate between the discharge port 13 and the discharge port 15 as shown by the arrow. Move. The drive of the motors 20 and 21 is controlled by a controller (not shown) in conjunction with the drive of a heater 23 described later.

A blower fan 22 is disposed in the case 11, and the blower fan 22 has its rotation axis horizontal to the connecting plate 27, that is, orthogonal to the direction from the first room A to the second room B. It is installed. The blower fan 22 causes air to temporarily flow between the partition plates 25 and 26 from the first room A in the horizontal direction and then is supplied to the second room B. Therefore, the case 11 shows an outline arrow. A flow of air is formed in the direction.

A heater 23 is arranged on the downstream side of the blower fan 22 in the air flow direction, and the heater 23 is supplied with power from an appropriate power source to generate resistance heat and heat the air flowing in the case. The driving of the heater 23 is controlled by the above-mentioned control device.

Further, a solid hygroscopic material 24 is arranged on the downstream side of the heater 23 in the air flow direction so as to intervene in the entire air flow area. The solid hygroscopic material 24 may be molded using a substance that adsorbs moisture, such as silica gel, zeolite, activated carbon, magnesium chloride, phosphorus pentoxide, magnesium silicate and activated alumina. In the case where the solid moisture absorbent 24 has a honeycomb shape, it is of course necessary to dispose the solid moisture absorbent 24 so that the air passage holes thereof match the longitudinal direction of the case 11, that is, the air flow direction. Is.

Next, the operation of the humidity adjusting device configured as described above will be described together with the control mode of the control device. First, the dehumidification mode will be described with reference to the time charts of FIGS. 2 (a), (b) and (c).

The control device drives the motors 20 and 21 to rotate together, and when the damper 17 opens the outdoor air intake port 14, the damper 19 also opens the outdoor air discharge port 15, and the indoor air intake port 12 and the discharge air. Close outlet 13. As a result, in case 11,
The blower fan 22 introduces outdoor air through the intake port 14, and after the outdoor air flows through the case 11 in the direction of the white arrow,
It is discharged to the outside air through the discharge port 15.

On the other hand, in the next period, the control device opens the indoor air intake 12 and the discharge port 13 and closes the outdoor air intake 14 and the discharge port 15. As a result, the room air flows through the case 11 by the blower fan 22, and the room air is supplied to the room through the discharge port 13.

Thus, as shown in FIG. 2 (c), the control device drives (energizes) the heater 23 while the outdoor air is flowing through the case 11. As a result, the outdoor air is heated by the heater 23 and is heated to a temperature of 80 to 90 ° C.,
After the water vapor partial pressure rises, it passes through the solid hygroscopic material 24, so the moisture contained in the solid hygroscopic material 24 is released by the passage of outdoor air, becoming hot and humid air through the discharge port 15 and outdoors. Is discharged to.

In this way, after the solid hygroscopic material 24 is regenerated by the outdoor air for a certain period, the indoor air is introduced into the case 11 and passes through the solid hygroscopic material 24 in the next period. While the room air is being introduced, the heater 23 is not energized, and therefore, the room air passes through the solid hygroscopic material 24 at room temperature, so that the water contained in the room air is adsorbed by the solid hygroscopic material 24 during the room air. Qi is dehumidified. Therefore, even if the room air temperature is 10 ° C. or lower, the moisture in the air can be trapped by the above-mentioned hygroscopic material. Since this dry air is supplied to the room, the humidity inside the room decreases. The interior is dehumidified by alternately repeating the introduction of the outdoor air and the introduction of the indoor air.

Next, the humidification mode will be described with reference to the time charts of FIGS. 3 (a), 3 (b) and 3 (c). As shown in FIGS. 3A and 3B, the point where the indoor air and the outdoor air are alternately introduced by the control device is the same as in the dehumidification mode.

However, in this humidifying mode, as shown in FIG. 3 (c), the heater 23 is energized to heat the indoor air to pass it through the solid hygroscopic material 24 while the indoor air is flowing through the case 11. . As a result, the room air passes through the solid hygroscopic material 24 containing water in a state where the partial pressure of water vapor is high, so that the room air is supplied to the room as hot and humid air.

On the other hand, during the next period, while the outdoor air is flowing through the case 11, the heater 23 is de-energized, so the outdoor air passes through the solid moisture absorbent 24 to be dehumidified and then discharged to the outside. To be done. In other words, the solid hygroscopic material 24 absorbs the moisture in the outdoor air during the passage of the outdoor air and sufficiently absorbs the moisture.

The room is humidified by alternately repeating the introduction of the outdoor air and the introduction of the indoor air.

Further, by appropriately adjusting the dehumidifying mode period and the humidifying mode period described above, the room is maintained at a predetermined humidity level.

The present invention is not limited to the above-mentioned embodiments, and various modifications can be made. For example, in the above-described embodiment, the dedicated motors 20 and 21 are used to rotate the dampers 17 and 19, respectively, but one motor is used and the dampers 17 and 19 are used.
By connecting the shaft members 16 and 18 and this one motor with a link or a chain, the dampers 17 and 19 can be interlocked and rotationally driven.

EFFECTS OF THE INVENTION According to the present invention, indoor air and outdoor air are alternately introduced into the case, and for example, when dehumidifying the room, the heater is driven while the outdoor air is being introduced. When heating the room air through the solid hygroscopic material to humidify the room, the heater is driven to heat the room air while the room air is being introduced so that the room air is passed through the solid hygroscopic material. Therefore, the outdoor air and the indoor air are alternately introduced into the solid hygroscopic material, and unlike the conventional case, they do not pass through different passage areas at the same time, and therefore hot and humid air and dehumidified air are mixed. Since it does not exist, it is possible to dehumidify and humidify the room with high efficiency.

Further, since the first and second rooms are provided as a unit, maintenance is easy, and further, the air blowing means provided at the boundary between these rooms is substantially directed in the direction from the first room to the second room. Since the gas is sucked in the direction orthogonal to, the blower unit itself can be downsized, and therefore the entire case can be thinned. Therefore, when the device of the present invention is attached to a container or the like used in a low temperature range, the effective volume of the container can be increased.

[Brief description of drawings]

1 (a) and 1 (b) are side sectional views and front sectional views, respectively, showing a humidity adjusting device according to an embodiment of the present invention, FIGS. 2 (a) to 2 (c) and 3 (a) to 3 (a). (C) is a time chart showing the control mode of the control device, and FIG. 4 is a schematic perspective view showing a conventional rotor type dehumidifying device. 11; Case, 12, 14; Inlet, 13, 15; Discharge port, 17, 19; Damper, 22; Fan, 23; Heater, 24; Solid moisture absorbent

Claims (4)

[Claims] 1. A case divided into a first room and a second room, and a case which is disposed at a boundary between the first room and the second room and is substantially arranged in a direction from the first room to the second room. An air blower for temporarily passing a gas in a direction orthogonal to the first chamber to supply the gas from the first chamber to the second chamber, and an outdoor air intake and an indoor air provided in a case in the first chamber. Inlet, opening and closing for alternately opening and closing the outdoor air inlet and the indoor air outlet provided in the case in the second room, and the outdoor air inlet and the indoor air inlet A member, a discharge port opening / closing member that alternately opens and closes the outdoor air discharge port and the indoor air discharge port, a heater provided in the second chamber, and a gas of the heater in the second chamber And a hygroscopic material provided on the downstream side in the flow direction, a batch type humidity adjusting device. 2. A control means for alternately controlling the opening / closing of the inlet opening / closing member and the outlet opening / closing member and the driving of the heater in accordance with a dehumidifying mode or a humidifying mode in the room. Item 2. A batch type humidity controller according to Item 1. 3. The blower means has a passage for allowing gas to flow in a direction substantially orthogonal to the direction from the first chamber to the second chamber, and the rotation axis of the passage in the passage in the longitudinal direction of the passage. 3. The batch type humidity adjusting device according to claim 1, further comprising a fan arranged so as to match with the above. 4. The batch type humidity adjusting device according to claim 3, wherein the passage is open to the second chamber.