JPH0667450B2 - Permeable structure for dehumidification - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a dehumidifying permeation for absorbing indoor humidity, condensing the humidity, passing the absorbed moisture, and discharging the moisture from the other surface to the outside of the system. Regarding the structure.

[Problems to be Solved by Prior Art and Present Invention]

The hygroscopic material used in conventional commercial dehumidifiers is corrugated asbestos sheets impregnated with hygroscopic fillers, and high humidity air is circulated in the hygroscopic zone of the hygroscopic material to absorb moisture. It was a large-scale thing that high-humidity air was collected and regenerated by passing hot air through the regeneration zone of the hygroscopic body. (JP-A-55-159827) Although the dehumidifying device described above has excellent dehumidifying ability, it is not suitable for use in a closet or a living room because it circulates air or generates mechanical noise. Further, a dehumidifying material is also used, but since it cannot be regenerated, the performance cannot be maintained for a long time.

The present invention has been made in view of such a conventional example, and the object thereof is to absorb moisture with a simple structure by condensing the absorbed moisture in the absorbent body and releasing the moisture on the back side of the absorbent body. Another object of the present invention is to provide a dehumidifying permeable structure that enables regeneration of the body, is compact, and has a large dehumidifying capacity.

[Means for solving problems]

In order to solve the problems of the conventional example, the present invention provides a hygroscopic body in which a hygroscopic filler is internally retained in a porous material having continuous microvoids formed by depositing fibers in layers ( A dehumidifying permeation structure is formed by forming at least the layered cross section of 1) as a moisture absorption surface and integrating the other layered cross section with a heat generating element (2) that does not prevent moisture from being released from the hygroscopic body.

Is adopted as a technical means.

[Operation] The moisture absorbed by the hygroscopic body (1) tries to move to the lower side of the moisture content and vapor pressure gradient in the hygroscopic body (1).

At that time, since the hygroscopic filler is present in the voids, the hygroscopic filler exerts several to several tens of times the hygroscopic capacity as compared with the porous material without internally adding the hygroscopic filler, and the moisture content is small even if the difference in water content or the vapor pressure is small. Movement is promoted.

Here, since the fibers mainly spread two-dimensionally in the direction parallel to the layers in the porous material formed by depositing the fibers in a layered manner, the water movement is directional.

Therefore, when the surface side (inside the room) is highly humid, the absorbed moisture moves along the stacking direction and spreads over the entire hygroscopic body.

Here, by heating the steam-generating body (2) provided on the side of the other layered cross-section of the hygroscopic body, the moisture in the vicinity of the heat-generating body (2) is released as water vapor from the side of the layered cross-section.
The water content near the heating element (2) decreases, and the hygroscopic filler near the heating element (2) is regenerated.

As a result, the moisture taken in on the surface side inside the hygroscopic body (1) moves to the heating element mounting surface side, and continuous moisture release on the heating element mounting surface becomes possible.

Here, by causing the heat generating element (2) to generate heat for a certain period of time, moisture is released from the heat generating surface, the hygroscopic filler on the hygroscopic surface side of the hygroscopic element (1) is also regenerated, and the moisture absorption is repeated, thereby dehumidifying. The effect can be maintained for a long time.

〔Constitution〕

Examples of the porous material having microscopic voids used in the present invention include those obtained by depositing and integrating inorganic fibers such as rock wool and glass wool with a binder, and those obtained by laminating and integrating non-woven fabric and fiber boards to a desired thickness. is there.

If the layered porous material is preliminarily bent in a predetermined direction, the moisture absorbing surface and the moisture releasing surface do not have to face each other, and for example, the moisture can be released in a perpendicular direction.

Furthermore, the porous body has a moisture permeability of 1 × 10 ⁻³ g / m · h · mmHg or more, and when heat is generated, the greater the temperature difference between the front and back surfaces, the more active the movement of water to the back surface, so heat conduction The resistance is preferably 2.0 m · h · ° C / kcal or more, and the pore size distribution is 0.1 to 100 μm in order to particularly activate the capillary flow and to retain the hygroscopic filler described later.
In the case of a layered porous material, those having a pore size distribution of 1 μm or more are suitable for water movement.

Also, the thicker the material, the greater the amount of water retention, and the slower the heat conduction to the front side when the back side is heated, the more easily the temperature gradient and the water content gradient are required, so at least 5 mm is required,
It is preferably 20 mm or more.

In the present invention, as the hygroscopic filler, deliquescent substances such as calcium chloride and lithium chloride, water-soluble polymers such as diethylene glycol, triethylene glycol, glycerin, sodium polyacrylate, PVA, bentonite, sepiolite, zeolite, activated alumina Inorganic hygroscopic materials such as azonotlite, activated carbon, and molecular sieves, water-insoluble polymer hygroscopic materials such as grafted starch and isobutylene maleic anhydride, or a mixture thereof are used.

As a method for internally adding the hygroscopic filler to the porous body, when the deposition is integrated, the hygroscopic filler is added together with the binder and the fibers to perform the deposition integration, or after the porous material is obtained in advance, a surfactant, etc. The means for making the porous material hydrophilic by impregnating it with a hygroscopic filler dissolved in water, drying it, and internally adding it.

The heat-generating element (2) used in this example uses a metal heating wire, but is a breathable sheet to which metal etching or conductive paint is attached, etc., which are appropriately moisture-proofed and leak-treated. Further, a uniform sheet such as a metal net may be integrally laminated in order to make the heating uniform. The exothermic temperature is 5 ° C from the greenhouse.
It is sufficient to raise the temperature above, preferably at a material temperature of 40 ° C to 140 ° C.
The temperature of the heating element may be set so that it becomes ℃, but the higher the temperature, the more active the moisture release of the heating element, and the shorter the time required. As a method of heat generation, it is effective to use moisture absorption for a certain period of time and heat the moisture absorption body for several hours when the moisture content of the hygroscopic body increases, which may be controlled by a timer or a humidity sensor.

(Example 1) FIG. 1 is a first example of the present invention, in which (1) is a porous material in which fibers having a hygroscopic filler internally held therein are deposited in layers to form a hygroscopic body (1) having a layered surface in advance. It is bent at a right angle. (2) is a heating wire, and (3) is a cover member that covers the hygroscopic body (1). The hygroscopic surface side (4) of the hygroscopic body (1) is placed on the indoor side and attached to a wall surface or the like for use. Attach the wet side (5) to a duct or the like on the back side of the wall. The moisture taken in by the hygroscopic body (1) is guided by the hygroscopic body (1) and the cover member (4) and radiates moisture on the moisture radiating surface (5) side.

When formed as described above, a long space can be provided between the moisture absorbing surface and the moisture releasing surface in a limited space, so that heat generated by the heating wire (2) is less likely to be transferred to the moisture absorbing surface (4) from the moisture absorbing surface to the indoor side. Can prevent the release of moisture.

When the duct blows air outside the system, the duct absorbs moisture from the moisture absorbing surface of the moisture absorber (1), and the moisture released from the heat generating portion (22) side can be released to the outside of the system.

〔Example〕

Calcium chloride is used as a hygroscopic filler on rock wool board (specific gravity 0.25, average pore diameter 55μ, porosity 90.6%) using phenol resin of size 200 × 150 × 50mm as binder.
It was impregnated with 15% by weight to prepare a layered hygroscopic body (1). This layered moisture absorbent (1) has a thickness of 1.5m for guiding and reinforcing.
Three layers were laminated via an m-thick plastic plate so that the laminated surfaces would overlap, and one end was bent at 90 ° and stored in a cover member. Furthermore, a cable heater (length 1.5m, 100V, 30W) is integrated into one section to form a three-layer laminate (150
× 150 × 200 mm space thickness 50 mm) was produced.

When this device was placed in an atmosphere of 90% relative humidity and energized for 30 minutes a day, about 7 g / day of water could be collected.

(Experimental example) By the way, when a commercially available disposable dehumidifying material is put in a closet or the like, the amount of water collected is about 100 ml / month, and the dehumidifying effect level is different, which is excellent. Further, since the commercially available indoor dehumidifier has 100 mg / hour, scaling up the moisture absorption area of the above-mentioned embodiment to a size of 60 (cm) × 60 (cm) provides almost equality. Further, when the water was collected and dried, it was found that the solid content was not present and the hygroscopic filler did not flow out from the hygroscopic body, and the performance of the hygroscopic body did not deteriorate even after long-term use.

[Effect]

According to the present invention, at least a layer-shaped cross-section of a hygroscopic body having a continuous microvoid formed by depositing fibers in a layered manner and having a hygroscopic filler internally held in the void is used as a hygroscopic surface. Since the heating element that does not interfere with the release of moisture from the hygroscopic body is integrated on the surface, the layered porous material has two-dimensionally spread fibers mainly in the direction parallel to the layers, so that water movement is directional. As a result, there is an advantage that moisture easily moves to the surface side where the heating element is integrated, the moisture absorbing surface and the moisture releasing surface can be provided in a predetermined direction, and efficient dehumidification becomes possible. Therefore, dehumidification and regeneration can be performed without air circulation, and as a result, less energy needs to be added and running costs are low. Further, since it has little influence on the room temperature, it is suitable for dehumidifying a closet or a storage.

Furthermore, since the moisture taken in the hygroscopic material is released as water vapor from the heat generating surface of the hygroscopic material by the heat of the heating element, there is no outflow of the hygroscopic filler, and high hygroscopic performance can be maintained for a long period of time. Contamination of peripheral equipment due to wheel spill,
There is also an advantage that deterioration can be prevented.

In addition, since the moisture absorber body does not require an air circulation device and the like, and peripheral equipment is simple, and the equipment can be made compact, it can be incorporated into other air conditioners and building walls, etc. It is possible to provide a completely different dehumidification method.

[Brief description of drawings]

 FIG. 1 ... Perspective sectional view of the present invention, (1) ... dehumidifying body, (2) ... heating element (3) ... cover member, (4) ... hygroscopic surface

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kiyoshi Mimura 2-3-18 Nakanoshima, Kita-ku, Osaka City, Osaka Prefecture Daiken Kogyo Co., Ltd. (56) Reference JP-A-56-26528 (JP, A) Kai 62-49930 (JP, A)

Claims (1)

[Claims] 1. A porous material having continuous minute voids formed by depositing fibers in layers and having a hygroscopic filler internally held in the voids has at least a layered cross-section as a hygroscopic surface, and others. A permeation structure for dehumidification, characterized in that a heat-generating body that does not prevent moisture from being released from the hygroscopic body is integrated in the layered cross-section of the dehumidifying body, and the absorbed moisture is mainly two-dimensionally moved along the layered structure of the fiber. .