JPH01281129A - Apparatus for dehumidification - Google Patents

Abstract

PURPOSE:To dispense with a door at the inner side of a moisture-proof storehouse and to make an apparatus compact by arranging a heating element at the outer side of a moisture absorbing body fitted to an opening at a partition wall of the house so as to make a direction of absorption and desorption of moisture from the inside to outside of the house and by shutting out air flow between the inside and outside of the house with the moisture absorbing body. CONSTITUTION:A dehumidification apparatus A, consisting of a moisture absorbing body 1 which is prepared by impregnating a hygroscopic filler such as calcium chloride, in a base material such as a rock wool board, a heating element 2 which is attached to or buried in the outer side of the moisture absorbing body 1 and a door 4 which is fitted to the outside of a casing 3, is fitted to a partition wall C of a moisture-proof storehouse B. In case the inside of the house is highly humid, the water picked up from the inside of the house is spread all over the absorbing body 1. After that, an emission of moisture is carried out while regenerating the hygroscopic filler by heating up the heating element 2. At that time, the water vapor is emitted outward from the dehumidification apparatus A by opening the door 4. On the other hand, the moisture absorbing body 1 does not absorb moisture from the outside of the house by closing the door 4 during the moisture absorption process.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention can be attached to an opening in a partition wall of a moisture-proof warehouse, closet, or living room, and can be used to keep the inside of the warehouse or room at low humidity and prevent condensation on the inner surface of the wall. The present invention relates to a dehumidifying device.

(Prior Art) Conventionally, a dehumidifying device as exemplified in Japanese Utility Model Publication No. 62-43258, that is, a moisture absorbent that can be regenerated by heating,
A dehumidifying device consisting of a heating means for heating and regenerating the moisture absorbent, a casing that houses the moisture absorbent and the heating means, an internal door attached to the inside of the casing, and an external door attached to the outside of the casing. It has been known.

(Problem to be Solved by the Invention) However, in the above-mentioned dehumidifying device, the inside and outside of the moisture-proof storage are communicated through this device, and the moisture absorbent releases the absorbed moisture in all directions during playback. Therefore, when heating and regenerating the moisture absorbent, it is necessary to prevent the released moisture from returning to the moisture-proof chamber. For this reason, the above-mentioned internal door is essential, and it is also necessary to close the external door when moisture is absorbed and close the internal door during regeneration, which makes the device large and complicated to control. become.

(Purpose of the Invention) The present invention has been made to improve a dehumidifying device in view of the above points, and it provides directionality to the moisture absorption and release of the moisture absorption board and substantially improves the air circulation inside and outside of a moisture-proof storage. It is an object of the present invention to provide a dehumidifying device that eliminates the need for a door on the inside of the refrigerator by shielding, thereby allowing the device to be miniaturized and easy to control.

(Means for Solving the Problems) In order to achieve this object, the present invention provides a moisture absorbing plate body by attaching a heating element to the outer side of the moisture absorbing plate body fitted into the opening of a partition wall of a moisture-proof warehouse etc. The moisture absorption and release is directed from the inside of the refrigerator to the outside of the refrigerator, and the moisture absorption plate substantially blocks air circulation inside and outside the refrigerator.

Specifically, the solution taken by the present invention is that the partition wall is fitted into the opening of a partition wall such as a moisture-proof storage so as to substantially block air circulation inside and outside the partition wall, and a hygroscopic filler is internally added within the microgap. a moisture-absorbing plate that holds the moisture-absorbing plate, a heat-generating element for moisture release attached to the outside of the refrigerator in contact with or buried in the moisture-absorbing plate, and a heating element that is attached to the outside of the refrigerator and is opened when the heating element is at a high temperature. The structure consists of a door and a door.

(Function) With the above configuration, when the dehumidification device configured according to the present invention is disposed on a partition wall of a moisture-proof warehouse or the like, the following phenomenon occurs.

(2) Moisture taken into the moisture-absorbing plate moves to the side where the moisture content and vapor pressure gradient within the moisture-absorbing plate are lower.

(2) In this case, the moisture-absorbing plate has a hygroscopic filler internally added and retained in microscopic voids, and there is no air circulation under normal conditions, but water movement occurs due to differences in vapor pressure and moisture content. When used with a base material that does not contain a hygroscopic filler, it exhibits several to several tens of times the moisture absorption ability, and even with a slight difference in moisture content or vapor pressure, moisture transfer occurs.

■ Therefore, when the inside of the refrigerator is highly humid, the moisture taken in from the inside of the refrigerator spreads over the entire moisture absorbing plate.

■ After that, when the heating element attached to the outside of the moisture absorbing plate is made to generate heat for a predetermined period of time, that is, until the inside of the refrigerator is heated and the release of water vapor to the inside of the refrigerator becomes active, the moisture near the heating element becomes water vapor. Since the water is released from the outside of the moisture absorbing plate, the moisture content near the heating element decreases and the hygroscopic filler near the heating element is regenerated.

(2) As a result, the moisture that has been taken in inside the moisture absorbing plate moves to the outside of the refrigerator, and moisture is further released on the outside of the moisture absorbing plate.

■ At this time, if the door attached to the outside of the refrigerator is left open during dehumidification, water vapor will be released to the outside of the dehumidifier.

■ On the other hand, if the door attached to the outside of the refrigerator is closed during moisture absorption, the moisture absorption plate will not absorb moisture from outside the refrigerator.

As described above, the moisture absorbing plate substantially shields the inside and outside of the moisture-proof storage, etc., and the moisture absorption plate has a directional effect on moisture absorption and release, such as absorbing moisture from the inside of the storage and releasing moisture from the outside of the storage. Therefore, the dehumidifying device of the present invention will not absorb moisture from outside the refrigerator even if there is no door provided inside the refrigerator.

(Example) Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a dehumidifier A according to an embodiment of the present invention in a moisture-proof warehouse B.
This dehumidifying device A includes a moisture absorbing plate 1, a heating element 2 attached to the outer side of the moisture absorbing plate 1 in contact with or embedded in the refrigerator, and a moisture absorbing plate 1. body 1
and a casing 3 that holds the heating element 2 inside;
It consists of a door 4 attached to the outside of the casing 3.

The moisture-absorbing plate 1 is formed by holding a hygroscopic filler internally in the voids of a base material having fine voids.

The base material may be any material as long as it does not easily break or deform due to moisture absorption.Specifically, it may include: ■Water-resistant non-woven fabric or paper laminated and integrated as appropriate, ■Gypsum, cement, calcium silicate, etc. Inorganic bodies such as rock wool or ceramic sintered bodies; ■Wood-based plates such as fiberboard, particle board, or paperboard; or ■Polyvinyl chloride sheet with pore size adjusted by foaming; polyolefin with pore size adjusted by stretching. Examples include a single body or a composite body of a porous body such as a sheet or a fiberboard whose pore diameter is adjusted by compression.

In addition, the base material has a moisture permeability of I×10-3g/m・h1mm
Hg or more, and the heat conduction resistance is 2.0 m-h to increase the temperature difference between the front and back surfaces and activate moisture movement to the back surface.
・'I:/kca or higher is preferable, and in order to activate capillary flow and efficiently retain the hygroscopic filler, the pore size distribution is particularly widely dispersed between 0.1 and 100μ. preferable.

Furthermore, the thickness of the base material needs to be 5 mm or more in order to obtain a temperature gradient in the front and back directions, and the larger the thickness, the more
20II11 or more is preferable because the water retention capacity becomes large and the heat conduction to the front side becomes slow when the back side is heated, making it easier to obtain a temperature gradient and a water content gradient.

The moisture-absorbing filler internally added to the above base material includes: ■ deliquescent substances such as dicium chloride, lithium chloride, ■ water-soluble polymers such as diethylene glycol, triethylene glycol, glycerin, sodium polyacrylate, and PVA, and ■ bentonite. , Seviolite, zeolite, activated alumina, xonotlite, activated carbon, molecular sieves, and other inorganic moisture absorbents; Grafted starch, isobutylene maleic anhydride, and other water-insoluble polymer moisture absorbents alone or in combination. .

The method for internally adding the hygroscopic filler to the base material includes impregnating the base material after molding with a dissolved hygroscopic filler, or kneading and curing the hygroscopic filler together with the raw material of the base material.

FIG. 2 shows a perspective view of the dehumidifier A, in which a bent heating element 2 is attached to the outside of the moisture absorbing plate 1. As a result, the moisture taken into the inside of the moisture absorbing plate 1 from the inside of the refrigerator moves to the outside of the refrigerator, and is released as water vapor from the outside of the moisture absorbing plate 1 along with the heat generated by the heating element 2. As the heating element 2, any material that does not hinder moisture release from the moisture absorbing plate 1 can be used as appropriate, and in addition to the metal heating wire treated with moisture-proofing and electric leakage treatment as in this embodiment, metal etching or etching on a breathable sheet can be used. It may also be a material coated with conductive paint and subjected to moisture-proofing and electrical leakage treatment.

It is preferable to use as the heating element 2 an integrally laminated heat-uniforming sheet such as a metal net, since the moisture absorption plate 1 can be heated uniformly.

The heat generation temperature of the heating element 2 may be set so that the temperature of the moisture absorbing plate 1 is 5 degrees Celsius or more higher than the temperature outside the refrigerator, but it is better to raise the temperature rapidly to increase the temperature inside and outside the refrigerator. Since the difference occurs and the directionality of moisture release is established, the temperature of the moisture absorbing plate 1 is 80℃~
It is preferable to set the temperature to 150°C. An effective way to generate heat is to allow the moisture absorbing plate 1 to absorb moisture for a certain period of time, and when the moisture inside the moisture absorbing plate 1 increases, to generate heat for several minutes to several hours. It may be controlled by a humidity sensor.

As the casing 3, it is possible to use a structure that can be attached to the partition wall C of the moisture-proof B and can hold the moisture absorbing plate 1 and the heat generating element 2 inside the casing 3 as appropriate.

A door 4 is supported on the outside of the casing 3 so as to be openable and closable, and the door 4 is hinged to the casing 3 at its lower part so that water vapor can be dissipated from an upper opening.

A door opener 5 is attached to the lower side surface of the casing 3. This door opener 5 includes a base body 51, a sliding member 52 that is supported slidably in the inside and outside directions of the moisture-proof RLB in the gas 51, an arm 53 that protrudes from the lower end side of the door 4, and It consists of a connecting plate 54 that connects the moving member 52 and the arm 53. The sliding member 52 is biased toward the outside of the refrigerator by a spring disposed within the base body 51, and is also
It is also attracted toward the inside of the refrigerator by the electromagnetic force of the electromagnet placed inside the container. By doing so, when the electromagnet is energized, the electromagnetic force exceeds the biasing force of the spring, and the sliding member 52 slides toward the interior of the refrigerator, and the lower end of the arm 53 also rotates toward the interior of the refrigerator. Along with this, the door 4 is opened. By doing so, the water vapor released from the outside of the moisture absorbing plate 1 by the heating element 2 can be dissipated from between the casing 3 and the opened door 4.

FIG. 3 shows the heating element 2 and door opener 5 in the dehumidifying device A.
2 shows a circuit diagram of a circuit for turning on and off energization, in which a heating wire 21 of a heating element 2 and a door opener 5 are connected to a lead wire 25 via a switch 22, a temperature fuse 23, and a timer 24. By doing this, the lead wire 25
When connected to the power source and turned on the switch 22, the timer 24
After a certain period of time set by , the heating element 2 generates heat and the door 4 is opened. In this case, the pilot lamp 27 indicates that the switch 22 is on, and the pilot lamp 28 indicates that the heating wire 21 and the door opener 5 are energized.

In the above embodiment, the door 4 was opened at the same time as the heating wire 21 was energized, but instead, a shape memory alloy spring was used to open the door 4 when the heating element 2 was at a high temperature. The heating element 2 can be opened by detecting the heat generated by the power generating element 2 with a thermocouple, or the door 4 can be opened by sensing the heat generated by the power generating element 2 with a thermocouple, or, contrary to the above, the heating wire 21 can be energized at the same time as the door 4 is opened. The structure of the door that opens when the temperature is high can be selected as appropriate.

(Experimental Example) Next, an experimental example of the dehumidifying device A according to a specific embodiment of the present invention will be shown.

Rock wool board impregnated with 20% by weight of calcium chloride, a hygroscopic filler (specific gravity 0.25, average pore diameter 5)
A 100V, 22.5W cable heater was mounted in contact with or buried in one laminated surface of the moisture absorbing plate 1 formed to have a size of 50 mw x 150 mm, and these moisture absorbing plate 1 and cable heater were laminated. A dehumidifying device A was prepared, which was housed in a casing 3 and had a door 4 attached to the casing 3. Then, this dehumidifier A was heated at 25°C and 70°C.
%RH, the heating element 2 is energized and its temperature is set to 80°C, and the door 4 is opened when the temperature of the cable heater exceeds 40°C. It was designed to be occluded at temperatures below ℃.

As a result, the temperature of the moisture absorbing plate 1 around the cable heater rose to 50° C., and water vapor was generated from the surrounding area at 5 I9/hour. If a commercially available disposable dehumidifier is kept in a closet, the amount collected is about 100 sQ/month, so the dehumidifying ability of the dehumidifying structure A can be understood.

In addition, a normal indoor dehumidifier has a rating of 100% under the above conditions.
If the size of the moisture absorbing surface of the moisture absorbing plate 1 is 600 m5 x 600 mm, the amount of sample collected is about the same as that of the above-mentioned indoor dehumidifier.

(Effects of the Invention) As explained above, according to the dehumidification device of the present invention, the inside and outside of a moisture-proof storage are substantially shielded, and
The moisture absorption board absorbs moisture from the inside of the refrigerator and releases moisture from the outside of the refrigerator.
There is no need for a door on the inside of the refrigerator, making it possible to downsize the device and making it easier to control the device.

Furthermore, since air does not circulate through the dehumidifier, the circulation of heat inside and outside the moisture-proof warehouse is reduced, making it easier to adjust the temperature inside the warehouse and saving energy.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a dehumidifying device according to an embodiment of the present invention attached to a partition wall of a moisture-proof storage, Fig. 2 is a perspective view of the dehumidifying device, and Fig. 3 shows a heating element and A circuit diagram of a circuit that turns on and off power to a door opener is shown. A... Dehumidification device, B... Moisture-proof storage, C... Bulkhead, 1
...Moisture absorbing plate, 2...Heating element, 3...Casing, 4...Door, 5...Door switch.

Claims (1)

[Claims] (1) A moisture-absorbing plate body that is fitted into an opening of a partition wall of a moisture-proof warehouse or the like so as to substantially block air circulation inside and outside the partition wall, and holds a hygroscopic filler internally within the minute voids; A dehumidifying device consisting of a heat generating element for moisture release attached to the outside of the refrigerator in contact with or buried in the moisture absorption plate, and a door attached to the outside of the refrigerator at the opening and opened when the heating element reaches a high temperature.