JPH0336837Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a humidifying element that is installed in the ventilation path of an air conditioner, etc. to moderately humidify the blown air. The objective is to provide a good humidifying element.

(Prior Art and its Problems) Conventionally, there is a humidifying element shown in FIG. 4 used in an air conditioner.

As shown in FIG. 4A, this humidifying element a has a water vapor permeable long porous sheet b that is folded in half from the center position in the short side direction, and the three free ends of the porous sheet b in the two-folded state are The edges c are bonded together in a folded position through an adhesive layer d, and as shown in Fig. 4B, it is folded back and set in the ventilation path of an air conditioner, etc., and water is allowed to pass through the inside. The blown air is moderately humidified by water vapor evaporating from the surface of the porous sheet b.

However, in such a humidifying element a, the pressure of passing water is generally applied only to the porous sheet b, which is generally fragile, so there is a risk that the porous sheet b may be damaged.

In addition, since the free edge c is bonded with an adhesive that is generally considered to have poor heat resistance, robustness, and watertightness, it may be damaged by the heat from blowing hot air or by the load when setting it in the folded state. There was a risk of damage to the adhesive part and water leakage.

Furthermore, since the free edge c is exposed outward in a folded manner while being glued together with the palms together, the appearance is poor and space is wasted.

(Issues to be solved by the invention) In view of the above-mentioned circumstances, the industry has desired the creation of a humidifying element that is compact, has excellent strength, watertightness, and appearance.

(Means for solving the problem) In this invention, a water vapor permeable porous sheet and a reinforcing sheet that has a melting point lower than that of the porous sheet and has air permeability are laminated with partial adhesion through an adhesive layer to form a long sheet. A thick laminated sheet is constructed, this laminated sheet is folded in half with the reinforcing sheet outside, and three free edges of the folded laminated sheet are folded back toward the folded inner space of the laminated sheet, The reinforcing sheet surfaces facing each other on the folded free edges are heat-sealed with their palms together to form the entire laminated sheet into a long bag-like shape, and a water supply pipe is connected to the desired position of this long bag-shaped laminated sheet. The above problem is solved by providing a humidifying element in which a drain pipe and a drain pipe are connected in communication with each other.

(Structure of the idea) The configuration of this invention will be explained based on the drawings.

FIGS. 1 to 3 are diagrams for explaining the humidifying element according to this invention, and numeral 1 in the figures indicates the humidifying element.

The humidifying element 1 is formed from a long laminated sheet 2.

The laminated sheet 2 is a water vapor permeable porous sheet 3
A reinforcing sheet 4 having a melting point lower than that of the porous sheet 3 and having air permeability is laminated with an adhesive layer 5 interposed therebetween in a partially adhesive state.

As the porous sheet 3, polytetrafluoroethylene or other materials are preferably used.

As the reinforcing sheet 4, nylon cloth, polyester cloth, and other materials are suitably used.

The melting point of the reinforcing sheet 4 is preferably 60° C. or more lower than that of the porous sheet 3.

If the melting point difference is less than 60°C, there is a risk that the porous sheet 3 near the fused portion will melt or be thermally altered during thermal fusion of the reinforcing sheet 4, which will be described later, resulting in water leakage and a decrease in water vapor permeability. It is from.

Adhesive layer 5 includes porous sheet 3 and reinforcing sheet 4
It is formed in a dot-like, streak-like, mesh-like, etc. part with an adhesive interposed between them.

The adhesion area in the adhesive layer 5 is the porous sheet 3
15 for the area of the mating surface between and reinforcing sheet 4
~60% is desirable.

If it is less than 15%, porous sheet 3 and reinforcing sheet 4
This is because the adhesive strength is insufficient and there is a risk of delamination, and on the other hand, if it exceeds 60%, the pores of the porous sheet 3 will be blocked by the adhesive, making it difficult for water vapor to evaporate sufficiently.

The laminated sheet 2 constructed in this way is folded in half from the center position in the short side direction with the reinforcing sheet 4 outside, and the laminated sheet 2 in this two-folded state
The free edges 6 on three sides are folded back toward the folded inner space 7 of the laminated sheet 2.

In addition, the laminated sheet 2 is 2 points from the center position in the long side direction.
It can also be folded.

The opposing surfaces of the reinforcing sheet 4 of the folded free edges 6 are heat-sealed with their palms together, so that the entire laminated sheet 2 is formed into a long bag shape.

A spacer 8 is housed in the folded inner space 7 of the humidifying element 1, and a water supply pipe 9 and a drainage pipe 10 are installed at the end of the humidifying element 1.
are connected in series.

The spacer 8 is used to prevent the flexible humidifying element 1 from being crushed and to secure a water supply channel 11 in the folded inner space 7, and is a protrusion parallel to the outer position of both sides of the plate material 12. 13 is formed, and rubber or other flexible material is suitably used.

The structure of the humidifying element 1 according to this invention is as described above, and the manufacturing method thereof is as follows.

First, as shown in FIG. 2A, the laminated sheet 2 is folded in half with the reinforcing sheet 4 on the inside, and the surfaces of the reinforcing sheet 4 facing each other at the free edge 6 of the folded end are heat-sealed with their palms together. do.

Next, as shown in FIG. 2B, the one in FIG. 2A is turned inside out, and the spacer 8 is inserted into the space 7 inside the fold.

Next, as shown in FIG. 2C, the free edges 6 at both ends of the sheet in FIG. The surfaces are heat-sealed with their palms together (see Figure 2D).

To use the humidifying element 1 as described above, as shown in FIG. While sending water into the interior of the drain pipe 11, the surplus water is drained from the drain pipe 10.

When the humidifying element 1 is used in this manner, the blown air passes through the folded gap 14 of the humidifying element 1 as shown in FIG. It is emitted as water vapor through the holes, passes through the breathable reinforcing sheet 4, and moderately humidifies the blown air.

(Effect of the invention) This invention consists of a water vapor permeable porous sheet and a reinforcing sheet that has a melting point lower than that of the porous sheet and has air permeability, which are laminated in a partially bonded state through an adhesive layer. A laminated sheet is constructed, and this laminated sheet is folded in half with the reinforcing sheet outside, and the three free edges of this two-folded laminated sheet are folded back toward the folded inner space of the laminated sheet. The surfaces of the reinforcing sheet facing each other on the folded free edges are heat-sealed with their palms together to form the entire laminated sheet into a long bag shape, and a water supply pipe and a water supply pipe are attached to the required positions of this long bag-shaped laminated sheet. Since the humidifying element is connected in communication with the drain pipe, it has the following effects.

Since the reinforcing sheet is laminated with adhesive on the surface of the porous sheet, which is generally fragile, it has superior mechanical strength compared to a porous sheet alone, and there is no risk of damage due to the pressure of water passing inside. .

Since the three free edges of the laminated sheet are sealed by heat sealing, the sheet has superior watertightness and mechanical strength compared to sealing with adhesive, and water leakage and damage to the sealed portions are prevented.

The reinforcing sheet that heat-seals the three free edges of the laminated sheet has a lower melting point than the porous sheet, so the heat from the heat-sealing process can melt the porous sheet without causing thermal deterioration. It can be sealed, and problems such as water leakage and reduced water vapor permeability do not occur.

The sealed portions of the three free edges of the laminated sheet are folded back toward the folded inner space of the laminated sheet, unlike those in which the sealed portions of the free edges protrude outward in a pleated shape. It looks good and is compact.

Next, by describing an example of this invention,
The effect of this idea will be made clearer.

(Example) <Example 1> Laminated sheet: Product name Microtex-2 (manufactured by Nitto Electric Industries, Ltd.) Porous sheet: Polytetrafluoroethylene (melting point 327°C, thickness 25 μm, porosity 85%, average pore diameter 0.6μm) Reinforcing sheet: Nylon cloth (melting point 215℃) Adhesion condition: point adhesion (adhesion area 40%) Melting point difference: 102℃ Air permeability: 0.2cc/cm ² sec. The above lamination with a length of 10m and a width of 200mm Fold the sheet in half from the center of the width with the porous sheet outside,
The surfaces of the reinforcing sheets facing each other at the free edges of the bent ends were placed in a state of palms and were thermally fused (270°C) using a heat sealer.

Next, rubber spacers having parallel protrusions formed on both sides of the plate were inserted, and the plate was turned over so that the reinforcing sheet was on the front side.

After that, the free edges of both ends are folded back toward the folded inner space, and the surfaces of the reinforcing sheet facing each other on the folded free edges are brought into a state of palms, and are thermally fused (270℃) with a heat sealer to make the sheet longer. It was formed into a bag shape.

In addition, a water supply pipe and a drainage pipe were provided at required positions at both ends.

The humidifying element thus obtained was made into a spiral shape and set at the dry air outlet of an air conditioner.

No water leaks even when water is passed through the humidifying element, 50
When warm air at ℃ was applied at 2 m/sec., the moisture permeability was 0.5/hr.

<Example 2> Polyester cloth (melting point 260°C, melting point difference 67°C) was used instead of nylon cloth as the reinforcing sheet in Example 1.
It was prepared and set in the same manner as in Example 1, except that the welding was carried out at 300°C.

There was no water leakage, and the same moisture permeability as in Example 1 was achieved.

[Brief explanation of the drawing]

FIG. 1A is a perspective view of the humidifying element according to this invention, FIG. 1B is a sectional view taken along line B-B in FIG. An explanatory diagram of the manufacturing method of the humidifying element, Fig. 3 A, B is an explanatory diagram of the usage state of the humidifying element, Fig. 4 A, B
is a diagram illustrating the prior art. 1... Humidifying element, 2... Laminated sheet, 3
... Porous sheet, 4 ... Reinforcement sheet, 5 ...
Adhesive layer, 6...Free edge, 7...Folded inner space, 9...Water supply pipe, 10...Drainage pipe.

Claims (1)

[Scope of utility model registration request] A long laminated sheet is constructed by laminating a water vapor permeable porous sheet and a reinforcing sheet having a lower melting point than the porous sheet and having air permeability through an adhesive layer in a partially adhesive state. The laminated sheet is folded in half with the reinforcing sheet outside, and the free edges on three sides of the folded laminated sheet are folded back toward the space inside the folded laminated sheet. The reinforcing sheet surfaces are heat-sealed with their palms together to form the entire laminated sheet into a long bag shape, and a water supply pipe and a drainage pipe are connected and connected at required positions on this long bag-shaped laminated sheet. A humidifying element.