JPH1157379A - Water vapor movement controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water vapor movement control technique capable of surely maintaining the airtightness of the connecting parts in a connecting structure for connecting cylindrical bodies to each other. SOLUTION: This vapor movement controller is constituted by connecting the plural cylindrical bodies 40, 41 in series by holding a waterproof film 11 therebetween and forming plural sub-chambers 20, 21 segmented by this waterproof film between vent ports 3 and 3. A projecting fitting part 50 notched down to the middle of the thickness from the outer peripheral surface is formed at the end of the one cylindrical body to be connected and a recessed fitting part 60 notched down to the middle of the thickness from the inner peripheral surface is formed at the end of the other cylindrical body to be connected. The waterproof film is mounted via gaskets 7, 7 between the front end face 52 of the projecting part fitting part of the one cylindrical body and the stepped surface 62 of the other cylindrical body. The projecting part fitting part and the recessed fitting part are fitted to each other via coupling means (screwing, adhering, welding, fitting) in such a manner that the front end face 63 of the recessed fitting part of the other cylindrical body is pressed to the stepped surface 53 of the one cylindrical body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water vapor transfer control device used as a humidifier, a dehumidifier, a humidity controller and the like by controlling a moving direction of water vapor by a special waterproof membrane and its arrangement.

[0002]

2. Description of the Related Art The present inventor has already disclosed in JP-A-5-32.
No. 2060 proposes a water vapor transfer control device.
As shown in FIG. 6, the water vapor transfer control device includes a plurality of cylindrical bodies 101 and 102 connected in series with a waterproof and air-permeable waterproof membrane 100 interposed therebetween. This is a water vapor transfer control device in which a plurality of partitioned small chambers 103 and 104 are formed. A mating portion 105 is formed, a concave fitting portion 106 is formed at an end of the other cylindrical body 102 by cutting out from the inner peripheral surface to a middle thickness, and a convex fitting portion of one cylindrical body 101 is formed. A waterproof membrane 100 is provided between the tip surface 107 of the cylindrical member 105 and the step surface 108 of the other cylindrical body 102.
And the convex fitting portion 105 and the concave fitting portion 106 are fitted via a screwing portion 110 which is a coupling means.

[0003] This water vapor transfer control device is used with one open to the outside air and the other connected to, for example, the inside of a box. It controls the movement of water vapor so as to dehumidify the inside of the case by the temperature of the outside air and the temperature of the case.

[0004] As described above, this water vapor transfer control device is formed by connecting a plurality of tubular bodies in a series, and unless the tubular bodies are connected in an airtight state.
From this, air leaks occur, and the movement of water vapor cannot be controlled accurately.

[0005]

However, in the conventional water vapor movement control device, in the connection structure between the cylindrical bodies, the convex fitting portion 105 of one cylindrical body 101 and the concave fitting of the other cylindrical body 102 are used. The joining portion 106 is merely fitted through the screwing portion 110. Therefore, airtightness of the connecting portion must be performed only by the screwing portion 110, and there is a problem that it is difficult to secure airtightness from the viewpoint of reliable airtightness.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. In a connection structure between cylindrical bodies, a water vapor transfer control device capable of surely maintaining the airtightness of a connection portion is provided. The task is to provide.

[0007]

In order to solve the above-mentioned problems, a water vapor transfer control device according to the present invention (Claim 1) has a plurality of cylindrical films having a waterproof and air-permeable waterproof film interposed therebetween. A water vapor transfer control device in which a plurality of bodies are connected in series and a plurality of small chambers defined by the waterproof membrane are formed between vents, and an outer peripheral portion is provided at an end of one tubular body to be connected. A convex fitting portion is formed by notching from the surface to the middle of the thickness, and a concave fitting portion is formed by notching from the inner peripheral surface to the middle of the thickness at the end of the other cylindrical body to be connected. Is formed, and a waterproof film is sandwiched between a tip end surface of the convex fitting portion of the one cylindrical body and a stepped surface of the other cylindrical body via packing, and the one cylindrical body is The convex fitting portion and the concave fitting portion are fitted via the coupling means such that the tip end surface of the concave fitting portion of the other cylindrical body comes into contact with the step surface. It was constructed.

[0008] In this case, the coupling means may be a threaded engagement between a male screw portion formed on the convex fitting portion and a female screw portion formed on the concave fitting portion (claim 2). (Claim 3), the welding between the convex fitting portion and the concave fitting portion (Claim 4), the concave portion formed on the outer peripheral surface of the convex fitting portion. And a convex portion formed on the inner peripheral surface of the concave fitting portion (claim 5).

This water vapor transfer control device is characterized in that the tip end surface of the concave fitting portion of the other cylindrical body is in contact with the stepped surface of one cylindrical body. Therefore, since the airtightness is maintained by the contact portion, the connecting means (the screwing of the male screw portion and the female screw portion, the bonding or welding of the convex fitting portion and the concave fitting portion, the concave portion and the convex portion In addition to maintaining airtightness by fitting, the contact portion can maintain airtightness twice.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a water vapor transfer control device according to a first embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view of a main part thereof.

In this water vapor transfer control device, two small chambers 20, 21 are defined between the vents 3, 3 by the three waterproof membranes 10, 11, 10, and the space between the vents 3, 3 is formed. It controls the movement of water vapor. That is, the water vapor transfer control device is used with one vent 3 open to the outside air and the other vent 3 connected to, for example, the inside of a box. 11,
Using the air permeability and moisture permeability of 10, the movement of water vapor is controlled so that the inside of the box is dehumidified by the temperature of the outside air and the temperature of the box.

Each of the waterproof membranes 10, 11, and 10 is formed of a ring-shaped frame 10a,
11a, 10a, the central waterproof membrane 11 is a small chamber tubular body 4 forming the outer walls of the small chambers 20, 21.
The waterproof membranes 10 and 10 on both sides are sandwiched between the cap cylinders 42 and 42 and the small chamber cylinders 40 and 41 that form the vents 3 and 3.

The small chamber cylinders 40, 41 and the base cylinders 42, 42 are connected in series, and the connection structure will be described below by taking a connection structure of the small chamber cylinders 40, 41 as an example. .

At the end of one of the small chamber tubular members 40 to be connected, the convex fitting portion 50 is cut out from the outer peripheral surface to the middle of the thickness.
Are formed, and a male screw portion 51 is formed on the outer periphery of the convex fitting portion 50.

A concave fitting portion 60 is formed at the end of the other small chamber cylindrical body 41 by cutting out from the inner peripheral surface to the middle of the thickness.
On the inner periphery of the concave fitting portion 60, a female screw portion 61 screwed to the male screw portion 51 is formed.

A ring-shaped frame 11a of the waterproof film 11 is provided between the distal end surface 52 of the convex fitting portion 50 of the one small chamber tubular body 40 and the stepped surface 62 of the other small chamber tubular body 41. The one small chamber tubular body 40 is sandwiched via packings 7, 7.
The male screw portion is fitted with the convex fitting portion 50 and the concave fitting portion 60 so that the distal end surface 63 of the concave fitting portion 60 of the other small chamber tubular body 41 comes into contact with the step surface 53 of the small chamber. 51 and female screw part 61
And are screwed together.

In this case, the step surface 53 of one of the small chamber tubular members 40 is formed in a concave arc surface, and the distal end surface 63 of the concave fitting portion 60 of the other small chamber tubular member 41 is formed in a convex arc surface. ing.
The concave and convex arc surfaces have a large inner radius R1 and a small outer radius R2.

The connection structure between the base cylinders 42, 42 and the small chamber cylinders 40, 41 is the same as that of the small chamber cylinders 40, 41 described above.
41 have the same structure.

In this water vapor transfer control device, the distal end surface 63 of the concave fitting portion 60 of the other small chamber tubular body 41 is in contact with the step surface 53 of one small chamber tubular body 40. Therefore, the hermeticity is maintained by this abutting portion, so that in addition to the hermeticity maintained by the threaded portion of the male screw portion 51 and the female screw portion 61, the airtightness can be maintained twice by this abutting portion. .

The stepped surface 53 and the distal end surface 63 are formed as a concave arc surface and a convex arc surface, and the inner radius R1 is large.
Since the outer radius R2 is formed to be small, when the male screw portion 51 and the female screw portion 61 are screwed together, the concave fitting portion 60 is deformed outward by being guided by the large inner radius R1. , At the outer small radius R2. Therefore, the contact is in a close contact state, and the airtightness is improved.

Next, FIG. 3 is a sectional view of a main part of a steam movement control device according to a second embodiment of the present invention.

In this water vapor movement control device, the convex fitting portion 5
0 and the concave fitting portion 60 are joined by the adhesive 80, and the stepped surface 54 is formed as an oblique surface.
Is different from the first embodiment in that the distal end surface 64 is formed at an acute angle surface.

Accordingly, in this water vapor transfer control device, the tip of the tip surface 64, which is an acute angle surface, is crushed by coming into contact with the step surface 54 of one of the cylindrical bodies 40, and the contact is made in a pressure contact state. Therefore, airtightness is maintained by this contact portion. Thus, the convex fitting portion 50 and the concave fitting portion 6
In addition to maintaining the airtightness by bonding with zero, the airtightness can be maintained double by the airtightness maintained by the contact portion, and the airtightness is improved.

FIG. 4 is a sectional view of a main part of a steam movement control device according to a third embodiment of the present invention.

In this water vapor movement control device, the convex fitting portion 5
0 and the concave fitting portion 60 are joined by the welding agent 81, and the step surface 55 is formed as a convex slope, and the concave fitting portion 6 is formed.
The difference from the water vapor movement control device of the first embodiment is that the zero end face 65 is formed in a concave slope. In this case, the tops of the convex slope and the concave slope are offset from the center of the wall thickness.

Therefore, in this water vapor transfer control device, when the convex slope of the step surface 55 and the concave slope of the tip end surface 65 come into contact with each other, the concave slope is guided by the large slope K1 of the convex slope and the concave slope. The portion 60 is deformed inward and comes into pressure contact with the small slope K2. As described above, the contact is in the pressure contact state, so that the airtightness is also maintained by the contact portion, and the airtightness is maintained by the adhesion between the convex fitting portion 50 and the concave fitting portion 60, and the airtightness is doubled. And the airtightness is improved.

FIG. 5 is a sectional view of a main part of a steam movement control device according to a fourth embodiment of the present invention.

In this water vapor movement control device, the convex fitting portion 5
0 and the concave fitting portion 60 are fitted by the concave portion 56 formed on the base outer peripheral surface of the convex fitting portion 50 and the convex portion 66 formed on the distal inner peripheral surface of the concave fitting portion 60. Connected points,
It is characterized in that the step surface 57 of the convex fitting portion 50 is formed in a concave arc surface, and the distal end surface 67 of the concave fitting portion 60 is formed in a convex arc surface.

Accordingly, in this water vapor movement control device, the concave portion 56 and the convex portion 66 are in a press-fitted state in which they are tightly fitted to each other. Airtightness can be maintained by doubly maintaining airtightness by contact between the part surface 57 and the distal end surface 67 of the concave fitting portion 60, and airtightness is improved.

In the fourth embodiment, the waterproof film 11
The ring-shaped frame 11a is formed of an elastic body, and the ring-shaped frame 11a itself functions as a packing.

In the fourth embodiment, the recess 5
As shown by the imaginary line in the figure, the outer peripheral surface of the convex fitting portion 50 and the inner peripheral surface of the concave fitting portion 60 are formed into a tapered surface T so that the fitting between the convex portion 6 and the convex portion 66 can be performed smoothly. Good.

Although the embodiment of the present invention has been described with reference to the drawings, the specific configuration is not limited to this. For example, the material of the cylindrical body may be a metal such as aluminum or stainless steel, or a synthetic resin. At this time, the cylinders to be joined may be joined together by molding one with a metal and the other with a synthetic resin using materials having different coefficients of thermal expansion.

Further, a mesh-shaped conductive porous body (copper, stainless steel, or a vapor-deposited plastic having a metal deposited on the surface) may be attached to face the waterproofing membrane, thereby facing the conductive porous body of the waterproofing membrane. The direction of movement of water vapor can be tilted in a certain direction while controlling the temperature of the surface.

When the cylindrical body is formed of an insulator such as a synthetic resin, metal deposition is performed from the inner peripheral surface to the joint, and the static electricity charged on the inner circumference of the cylindrical body by the conductivity due to the metal vapor deposition. It is advisable to form a path for escaping.

[0035]

As described above, according to the water vapor transfer control device of the present invention, the contact between the stepped surface of one small chamber tubular body and the distal end face of the concave fitting portion of the other small chamber tubular body is achieved. Since the airtightness is also maintained by the portion, the airtightness can be maintained twice by this contact portion in addition to the airtightness maintained by the connecting portion. Therefore, in the connection structure between the cylindrical bodies, an effect that the airtightness of the connection portion can be reliably maintained can be obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a water vapor transfer control device according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part of the water vapor transfer control device.

FIG. 3 is a cross-sectional view of a main part showing a water vapor movement control device according to a second embodiment of the present invention.

FIG. 4 is a cross-sectional view of a main part showing a steam movement control device according to a third embodiment of the present invention.

FIG. 5 is a cross-sectional view of a main part showing a steam movement control device according to a fourth embodiment of the present invention.

FIG. 6 is a sectional view of a main part showing a conventional water vapor transfer control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Waterproof membrane 11 Waterproof membrane 20 Small chamber 21 Small chamber 3 Vent 40 Small chamber cylindrical body (cylindrical body) 41 Small chamber cylindrical body (cylindrical body) 42 Cap base cylindrical body (cylindrical body) 41 Small chamber cylindrical body (cylindrical body) 50) convex fitting portion 51 male screw portion (coupling means) 52 tip surface 53 stepped surface 60 concave fitting portion 61 female screw portion (coupling means) 62 stepped surface 63 tip surface 7 packing 80 adhesive (coupling) Means) 81 Welding agent (Binding means)

Claims (5)

[Claims] 1. A plurality of cylindrical bodies are connected in series with a waterproof film having air permeability and moisture permeability interposed therebetween, and a plurality of small chambers defined by the waterproof film are formed between vents. A water vapor transfer control device, wherein a convex fitting portion is formed at an end of one tubular body to be connected by cutting out from an outer peripheral surface to a middle thickness, and the other one to be connected At the end of the cylindrical body, a concave fitting portion is formed by cutting out from the inner peripheral surface to the middle of the wall thickness, and the distal end surface of the convex fitting portion of the one cylindrical body and the other cylindrical body are formed. A waterproofing film is attached between the stepped surface and the stepped surface so that the tip end surface of the concave fitting portion of the other cylindrical body comes into contact with the stepped surface of the one cylindrical body. A water vapor transfer control device, wherein a mating portion and a concave fitting portion are fitted via a connecting means. 2. The water vapor transfer control device according to claim 1, wherein the coupling means includes a male screw portion formed on the convex fitting portion,
A water vapor transfer control device which is screwed with a female screw portion formed in the concave fitting portion. 3. The water vapor transfer control device according to claim 1, wherein the connecting means is an adhesion between the convex fitting portion and the concave fitting portion. 4. The water vapor transfer control device according to claim 1, wherein the connecting means is welding of the convex fitting portion and the concave fitting portion. 5. The water vapor transfer control device according to claim 1, wherein the coupling means includes a concave portion formed on an outer peripheral surface of the convex fitting portion and a convex portion formed on an inner peripheral surface of the concave fitting portion. Water vapor transfer control device that is fitted.