WO2007032121A1 - Water-vapor transfer controller - Google Patents

Abstract

A water-vapor transfer controller which can be easily assembled and has an emergency drainage structure so as to cope with, e.g., the case where water has come in an amount exceeding the capacity for water vapor processing. It has a small-chamber unit (2) which has, formed therein, small chambers (24) separated by films (22) and is fitted into an outer casing (3) while holding a drainage channel space (6). At ordinary times, the drainage channel space is stopped with a water-soluble sealing substance. Once water comes in, the water-soluble sealing substance dissolves to open the drainage channel space to the outside.

Description

Water vapor movement control equipment

 The present invention mainly relates to a water vapor movement control device used as a dehumidifying device by controlling the movement direction of water vapor with a special film body and its arrangement, and in particular, has entered the water vapor movement control device. Concerning water drainage technology. Background art

 In the water vapor movement control device, a plurality of spacer cylinders are directly fitted inside an outer casing, and a film body having air permeability and moisture permeability is interposed between the plurality of spacer cylinders. A small chamber is formed by being sandwiched and partitioned by this film body (see Japanese Patent Application Laid-Open No. HEI 5-3 2 0 60).

 This water vapor movement control apparatus is used with one of the outer casings open to the outside and the other opened to the inside of a box or the like (box, container, etc.). The temperature and moisture permeability are used to control the movement of water vapor inside the box etc. according to the temperature fluctuation speed of the outside air and the box.

 The feature of such a water vapor movement control device is that even if an abnormality occurs in the seal of a box or the like that houses electrical equipment such as an electric box or a container, it is possible to use a film body that has a large amount of water vapor movement. It is possible to promote the discharge of water vapor and adjust the humidity inside the box that houses the equipment.

However, with this water vapor transfer control device, the water vapor processing capacity is reduced. When excess water enters the space subject to humidity adjustment, there is a problem that the water cannot be drained and the water may be stagnated.

 For the treatment of water vapor, it is necessary to cause the space subject to humidity adjustment to generate a breathing phenomenon with the external environment air as the environmental temperature changes.

Conventionally, it is already clear how to adjust the ability to adjust humidity by using an accumulator, using a pressure safety valve, or configuring the wall of the chamber with an extendable member for the purpose of adjusting this breathing phenomenon. It is.

 However, once water exceeding the water vapor processing capacity enters the space subject to humidity adjustment, there remains a problem of how to secure a drainage channel.

 In other words, when protecting equipment that undergoes humidity adjustment in the space that is subject to humidity adjustment, the conventional device uses a film body with a large amount of water vapor movement to reduce stress on each seal. Ingenuity was done. On the other hand, the life of the sealing performance of the box (airtightness by various means to ensure airtightness) is directly affected by the breathing phenomenon with the external environment air accompanied by the environmental temperature change. Under conditions where the sealability has been severely damaged or destroyed, water has entered due to an accident, or when breathing with the external environment air has been lost. There was a problem that drainage was difficult.

 In addition, in the above-mentioned patent document, there is a description that a drainage mechanism utilizing a capillary phenomenon may be provided, but no specific countermeasure means is described. Conventionally, in such a water vapor movement control device, There is no one with a drainage structure.

The present invention has been made to solve such a conventional problem. In order to cope with the case where water exceeding the capacity of water vapor enters, An object of the present invention is to provide a water vapor movement control device having a drainage structure.

 In addition, by forming a chamber unit in which the spacer cylinder and the film body are incorporated into the inner cylinder, the assembly of the water vapor movement control device can be facilitated. Disclosure of the invention

 In order to solve the above problems, a water vapor movement control device of the present invention (Claim 1)

 A plurality of spacer cylinders are fitted inside the inner cylinder, and a film body having air permeability and moisture permeability is sandwiched between the spacer cylinders in a compressed state with an airtight seal. Thus, a small chamber unit is formed in which a small chamber defined by the film body is formed.

 The upper male screw part formed at the upper end is inserted into a mounting hole formed in the bottom wall of the box body, and the mounting nut is screwed into the upper male screw part from the inside of the box body, etc. Tube casing is attached,

 Inside the outer casing, the small chamber unit is fitted with a drainage gap.

 Water accumulated inside the box or the like flows into the outer cylinder casing through a slit formed in the upper male screw portion from a notch formed in the end face of the mounting nut, and the drainage channel. Shaped to drain outside through the gap,

 The drainage channel gap is normally closed by the water-soluble sealing substance, and when the water enters, the water-soluble sealing substance dissolves and the drainage channel gap is opened to the outside.

 The water vapor movement control device of the present invention (Claim 2)

The water vapor movement control device according to claim 1, wherein the top of the mounting nut A notch is formed on both lower end surfaces, and the mounting nut is formed so that the notch on the lower end side communicates with a slit formed on the upper male screw when the mounting nut is screwed. It was formed so that it could be used in reverse. '

 The water vapor movement control device of the present invention (Claim 3)

 The water vapor movement control device according to claim 1 or 2, wherein a back portion of the notch portion is formed in an arc shape.

 The water vapor movement control device of the present invention (Claim 4)

 The water vapor movement control device according to any one of claims 1 to 3, wherein a locking washer is mounted between the bottom wall of the box or the like and the mounting nut, and the locking stopper washer includes a plurality of locking stoppers on its inner periphery. The locking claws are projected at equal intervals,

 This locking claw is formed so as to be inclined so that the side facing the loosening direction of the mounting nut (upward side) faces upward and the side of the mounting nut loosening direction (downward side) faces downward In addition, the upper side is locked to the bottom surface of the mounting nut with elasticity in a direction to return to the inclined state with respect to the tightening of the mounting nut, and the lower side is the upper surface of the bottom wall of the box or the like And the locking claws are formed in a number different from the number of the plurality of notches formed at equal intervals on the mounting nut, thereby tightening the mounting nut. The loose stopper washer is configured to be mounted between the bottom wall of the box or the like and the mounting nut in a state of being deformed into a wave shape.

 The water vapor movement control device of the present invention (Claim 5)

The water vapor movement control device according to any one of claims 1 to 4, wherein an upper end portion of a drainage channel gap is formed between a step portion formed on an upper inner surface of the outer casing and an upper end of the small chamber unit. A porous ring body excellent in water absorption is attached to the upper end portion, and a water-soluble sealing substance is filled in the water-permeable gap of the porous ring body. The water vapor movement control device of the present invention (Claim 6)

 In the water vapor movement control device according to claim 5,

 The porous ring produced an emulsion obtained by coagulating a water-soluble substance such as oplate, cellulose, agar protein, gelatin, starch, etc., once partially coagulated with tannin having a low pH. It is formed by adsorbing and drying a mixture of hydrates obtained by neutralizing a complete gel body with sodium hydrogen carbonate using a hydrogen carbonate solution. The configuration.

 The water vapor movement control device of the present invention (Claim 7)

 7. The water vapor movement control device according to claim 5 or 6, wherein a film formed by coating a water-soluble base that easily forms a film by curing is formed on the surface of the porous ring body.

 The water vapor movement control device of the present invention (Claim 8)

 The water vapor movement control device according to any one of claims 1 to 7, wherein a squeeze packing is attached between a porous ring body attached to an upper end portion of the drainage channel gap and a small chamber unit. did.

 The water vapor movement control device of the present invention (claim 9)

 The water vapor movement control device according to any one of claims 1 to 8, wherein the conductive porous body is a hexagon having an inner angle formed at 120 degrees, and the lengths of two opposite sides are different from each other. By being formed twice the length of the side, it has a flat hexagonal mesh part formed by two long sides and four short sides,

The mesh portions are repeatedly connected as a unit pattern so as to form regular triangles by the long sides of adjacent mesh portions. Brief Description of Drawings

 FIG. 1 is a longitudinal sectional view showing an embodiment of a water vapor movement control apparatus of the present invention. FIG. 2 is an exploded sectional view of the outer casing. Fig. 3 is an exploded cross-sectional view of the small chamber unit. FIG. 4 shows a reference example of the present invention. Figure 5 shows a reference example of the present invention. FIG. 6 shows a reference example of the present invention. FIG. 7 is a plan view of the locking washer. Fig. 8 is an exploded sectional view showing the mounting structure of the locking washer. Fig. 9 is a front view showing the mounting structure of the locking washer. FIG. 10 is a bottom view of the water vapor movement control device. FIG. 11 is a partial cross-sectional view showing a state where the porous ring body is mounted. Fig. 12 is a plan view of the porous ring body. Fig. 13 is a cross-sectional view of a porous ring body using hygroscopic fibers. Fig. 14 is a cross-sectional view of a porous ring body using non-hygroscopic fibers. Fig. 15 is a graph showing the change in hardness due to water absorption of hygroscopic fibers and fluorohygroscopic fibers. FIG. 16 shows a reference example of the present invention. Fig. 17 is an explanatory diagram for explaining the problems that occur when attaching the quiz packing. Fig. 18 is a partial cross-sectional view showing the squeeze packing attached. FIG. 19 is an enlarged partial plan view showing the mesh plate of this embodiment. FIG. 20 is an explanatory diagram showing the mesh pattern of the mesh plate with lines. Figure 21 is an explanatory diagram of a wiring structure with reduced transient impedance. Fig. 22 is an explanatory diagram showing the heat conduction path of the orthogonal cross mesh. FIG. 23 is an explanatory view showing a basic heat conduction path of the mesh plate of this embodiment. BEST MODE FOR CARRYING OUT THE INVENTION

 FIG. 1 is a longitudinal sectional view showing an embodiment of the water vapor movement control device of the present invention, FIG. 2 is an exploded sectional view of an outer casing, and FIG. 3 is an exploded sectional view of a small chamber unit.

In this water vapor transfer control device 1, a small unit 2 has an outer casing 3 The bottom vent 3 8 is opened to the outside air, and the top vent 3 9 is opened inside the box 4 (box, container, etc.) 4 for example. used.

 The small chamber unit 2 includes a plurality of spacer cylinders 20 fitted into the inner cylinder 21 and a film having air permeability and moisture permeability between the spacer cylinders 20. The body 2 and the copper mesh plate 23 as the conductive porous body are sandwiched in a compressed state so as to have an airtight seal, and a small chamber 24 defined by the film body 22 is formed inside.

In the embodiment, two chambers 24 are defined by four spacer cylinders 20 and three film bodies 2 2.

 In addition, a space portion 20 a is formed at the lower end of the small chamber unit 2, and this space portion 20 a generates a turbulent flow in the air flow passing therebelow to cause the temperature of the film body 22 on the outside air side. It is formed for the purpose of reducing the distribution width.

 Each film body 22 is a film body having air permeability and moisture permeability, and is formed into a circular film having a predetermined diameter by punching with a press, etc., and using the air permeability and moisture permeability, The movement of water vapor is controlled so that the inside of the box body 4 is dehumidified by the temperature fluctuation speed in the box body 4. The mesh plate 23 as a conductive porous body is arranged in close proximity to or in contact with the membrane body 22, and is used to adjust the temperature gradient and humidity gradient of water vapor that passes through the influence of the surface temperature. The film body 22 functions as a film body support member that reinforces the film body 2 2.

 Also, the membrane body 2 2 and the mesh plate 23 may come into contact with each other due to the expansion of the membrane body 22 or the like due to the breathing phenomenon on the side of the box body 4 or the like.

 In the water vapor movement control device, the movement speed of the water vapor is adjusted using the planar film body 22, and the water vapor passing through the film body 22 is transmitted according to the temperature of the film body 22. Changes.

To make thermal design easier and to stabilize operation, you can It is necessary to make the surface temperature of the film body 22 uniform and to reduce the temperature distribution width.

 If the temperature of a part of the membrane body 2 2 is high and the other part is low, heat exchange is performed in the space where the plane of the temperature distribution contacts with the mesh plate 2 3 (conductive porous body) and As a result of heat exchange with the air, convection occurs, and the movement speed of the water vapor becomes uneven, which may disrupt the order of the direction of the water vapor movement.

 Therefore, in the present invention, the dispersion of the heat distribution of the mesh plate 23 is minimized, and the same plane can be quickly changed to a uniform temperature with respect to the temperature change of the moving boundary surface of the water vapor. A structure with a pattern was adopted.

 FIG. 19 is an enlarged partial plan view showing the mesh plate 23, and FIG. 20 is an explanatory view showing the mesh pattern of the mesh plate 23 with lines.

 As shown in Fig. 20, this mesh plate 23 has a hexagonal shape with internal angles of 120 degrees, and the length of the two opposite sides is twice the length of the other sides. Thus, a flat hexagonal mesh portion M formed of two long sides M l and four short sides M 2 is provided.

 Then, the mesh plate M is formed by repeatedly connecting the mesh portion M as a unit pattern. In this case, as shown by hatched portions in FIG. 20, three adjacent mesh portions are formed. The mesh portions M are connected so that a regular hexagon N is formed by the long sides M l, M l, and M 1 of M, M, and M.

 In this mesh plate 23, a regular hexagonal hole Q (which may be formed as a star-shaped hole) is formed in a portion surrounded by the short side portion M2 of the adjacent mesh portion M.

Structure of mesh plate 2 3 formed as above (mesh pattern Was found in the research process of electrical grounding by the applicant, and applied the theory of the patented transient impedance-reduced wiring structure (Japanese Patent Laid-Open No. 7-1 3 1 9 3 2). It is applied to conduction.

 In other words, invented in the electrical theory research process, the patented transient impedance-reduced wiring structure is applied as a mesh structure, and heat diffusion is efficiently performed to obtain the effect of reducing unevenness in the diffusion rate of heat propagation. Adopted the device to be used in

 The heat transfer theory uses the diffusion equation, and the basic theory of energy propagation is based on a concept that approximates electrical conductivity. In the case of heat, the thermal conductivity differs depending on the material. In the case of electricity, The electrical resistance is similar. The propagation speed is assumed to be constant for electricity, but is affected by conductivity for heat.

 Regarding the thermal conductivity of metals, as a general property of pure metals and alloys, there is Lorentz's law, in which a good electrical conductor has a higher thermal conductivity, and the electrical conductivity and thermal conductivity are approximately proportional. .

 The transient impedance-reduced wiring structure will be briefly described (for details, refer to Japanese Laid-Open Patent Publication No. 7-1 3 1 93 2).

 As shown in Fig. 21, a first current path X having a surge inflow point (o) and a branch point (a) on the side opposite to the surge inflow side, and a point where a reflected wave is generated by the surge And a second current path Y having connection points (b) and (c) at positions (d 2) from both ends (d) and (e). And a branch current path Z having substantially the same length for connecting the branch point (a) and the two connection points (b) and (c), respectively.

That is, branch current paths Z and Z having substantially the same length branched symmetrically in two directions are provided on the side opposite to the surge inflow point in the first current path X (input side), and on the downstream side of the first current path X The point between the points (d) and (e) where the reflected wave is generated by the surge (d) is the second current path Y between the two points that end (open end). The branch current paths Z and Z are connected to the flow path Y at substantially the same distance from one end, and the distance (dl) between the connection points (b) and (c) is the distance (d 2). The configuration is doubled.

 The effect is that the surge from point (o) is shunted at point (a), and a transient impedance of approximately 1 Z 2 appears at point (o). In addition, the surge from point (a) to point (b) flows in the direction (d) and becomes a transient impedance of about 1/2 before being reflected at the end and returning to point (0). Similarly, the surge from point (a) to point (c) flows in the direction (e), is reflected at the end point and becomes a transient impedance of about 1 Z 2 before returning to point (o). Impedance is reduced.

 Therefore, when the wiring structure with reduced transient impedance is replaced with thermal conductivity, the first heat conduction path X and the second heat conduction path y can be divided as shown in the orthogonal cross mesh shown in Fig. 22. The efficiency of the heat diffusion rate differs between the case where they are orthogonal and the case where d2: d1 = 1: 2 is taken into consideration, as shown in Fig. 23.

 That is, the intersection 0 4 in the case of Fig. 2 2 is at the same distance as seen from the end points 0 3, 0 3, 0 0, but in the case of Fig. 2 3 the same S-angle plane 0 3— 0 3-0 The surface area of the conductor within 0 increases, and as a result, the heat exchange area increases.

 Also, in Fig. 23 considering the diversion ratio, the angular distribution of energy from the application point (heat entry point) 0 0 passes through 0 1 and 0 2 to 0 3 through the diversion conduction paths z and z. And the first heat conduction path X from 0 0 to the diversion point 0 1 is perpendicular to the second heat conduction path y of 0 3− 0 3, and considering the heat diffusion to the plane, The diffusion direction is limited, resulting in an inconvenient shape.

Therefore, a configuration of hexagonal shapes (shown by phantom lines in Fig. 23) in which the diversion points 0 2, 0 2, 0 1 are arranged every 60 degrees and Fig. 23 is inverted by 180 ° As a result, the volume occupied by the mesh plate 2 3 On the other hand, the ratio of increasing the surface area of the mesh plate 23 and efficiently performing the heat splitting is configured as M 1: M 2 = 2: 1 as shown in Fig. 20. .

 Basically, if the strength of the material permits, the mesh part M can be configured with a 3 × n square while maintaining this ratio.

 In the heat conduction path composed of the same material, the heat conduction velocity can be considered as a similar diffusion theory by the Lorentz law.

 In the above-described wiring structure with reduced transient impedance, the angle between the voltage application point and the line segment is not discussed, but in order to efficiently dissipate the heat transfer in a plane, it is shunted in the direction of 360 degrees. In the present invention, for the purpose of structural strength requirements and simplification of manufacturing, in the present invention, 1 20 degrees at the connection point P where the long side portion M l and the short side portion M 2 become thermal branch points. A shunt is used.

 The mesh plate 2 3 (conductive porous body) is important as an auxiliary material for controlling the heat transfer of the water vapor transfer control device. The mesh plate 2 3 formed in the mesh pattern as described above is the mesh plate 2 The heat distribution of 3 can diffuse efficiently, and the same plane as the temperature change at the boundary of water vapor migration can change quickly to a homogeneous temperature.

 As a result, it is possible to homogenize the surface temperature of the moisture permeable membrane, which is the moving boundary of water vapor, and even if a temperature distribution in a small chamber space composed of two or more moisture permeable membranes occurs, the surface is transparent as a boundary surface. It is possible to homogenize the surface temperature of the wet film and stabilize the function of the water vapor movement control device.

In addition, the structure for design is easy, and the surface area of highly antibacterial metal materials such as copper is increased, and the free end area of the metal material itself is increased. At the same time, the surface area increases, increasing the heat exchange as well as maintaining the strength. Further, the surface area can be increased with respect to the space volume occupied by the conductive porous body, and it is easy to ensure the porosity, and the heat exchange property can be improved.

 The spacer cylindrical body 20 has a chamfered outer peripheral end on the side sandwiching the film body 22 and the mesh plate 23 in a compressed state, and a photo-curing resin 25 for providing an airtight seal. The filling is ensured.

 The light-curing resin 25 has a syringe (not shown) set in an injection hole (not shown) formed in the inner cylindrical body 21, and the inner cylindrical body 21 is fixed in this state while fixing the inner cylindrical body 21. Rotating spacer cylinder 20 and membrane body 2 2 and mesh plate 2 3, as a sealant with a syringe, photo-curing resin 25 (UV-curing silicone, UV-curing acrylic (modifying acrylic), etc.) It is filled by injecting water-soluble curable resin, etc.).

 The inner cylindrical body 21 is formed of a transparent synthetic resin, and the filling state of the spacer cylindrical body 20, the film body 22, the mesh plate 2 3, and the photo-curing resin 25 is incorporated in the inside. It can be confirmed with.

 The material of the inner cylinder 21 and the spacer cylinder 20 can be selected in consideration of chemical bonding or mechanical fitting with the photo-curing resin 25. For example, transparent acrylic is used for the inner cylinder 2 1. The spacer cylinder 20 should be selected in consideration of the transmission of light for the photocuring reaction and the temperature gradient of each chamber 2 4 affecting the performance of the completed water vapor transfer control device 1. it can. In addition, a surface treatment such as a primer for promoting bonding may be performed.

If this joint is not secured tightly, as shown in the reference example in Fig. 4, a side leakage in the direction perpendicular to the passage direction of the membrane body 22 (arrow Q direction) occurs. 7 A may be used. In this case, fibers or the like are cascaded in the ventilation direction between the inner cylindrical body 21 and the spacer cylindrical body 20. For example, the spacer cylinder 20 can be wound with fibers 7 such as Japanese paper and incompletely bonded to form the drainage channel 7a.

 Further, as shown in the reference example of FIG. 5, a drainage channel 7 a may be secured in the small chamber 24 as indicated by an arrow P together with the side leaking air. In this case, as shown in the reference example of FIG. 6, when the packing 2 2 a is attached to the outer peripheral portion of the membrane 22 arranged in the small chamber unit 2 with an adhesive, a water-soluble adhesive is used as the adhesive. Agent 2b should be used to dissolve the water-soluble adhesive 22b in order to break the holding part of the film body 22 if significant water enters.

 In this case, there is a difference in the hygroscopicity depending on the constituent material of the membrane body 22. Therefore, the water-soluble adhesive 22b has different impregnation properties (how to penetrate), and the membrane body 2 2 and packing are different. 2 2 a tends to be imperfectly fixed. The outer cylinder casing 3 includes a main body cylindrical portion 30, a mounting nut 3 2 screwed into an upper male screw portion 31 formed on the upper end surface of the main body cylindrical portion 30, and the main body cylindrical portion 30. An assembly nut 卜 3 4 is provided to be screwed into the lower male screw portion 33 formed at the lower end.

 Then, by fitting the small chamber unit 2 inside the main body cylindrical portion 30, the water vapor movement control device 1 is assembled. In this case, the porous body described later is formed from the lower end of the main body cylindrical portion 30. Insert the material ring 5 1 and the upper end mesh plate 5 2 into the cylindrical body 30 and then insert the small chamber unit 2 into the assembly nut 3 4 with the lower male thread 3 3 The small chamber unit 2 is tightened from below by a ring plate 3 4 a formed integrally with the assembly nut 34 and is housed and held in the main body cylindrical portion 30.

As described above, the water vapor movement control device 1 in which the small chamber unit 2 is fitted inside the main body cylindrical portion 30 is attached to a box or the like 4 so that the air permeability and permeability of each film body 22 can be obtained. Use humidity between both vents 3 8, 3 9 By controlling the movement of water vapor, the movement of water vapor is controlled to dehumidify the inside of the box etc. 4 according to the temperature fluctuation speed of the outside air and the box etc. 4.

 In this case, the upper male screw part 3 1 formed in the main body cylindrical part 30 of the outer casing 3 is inserted into the mounting hole 40 formed in the bottom wall 4 1 of the box body 4, etc. O Ring (packing) 3 5 The water vapor movement control device 1 is attached to the box body 4 by screwing the mounting nut 3 2 into the upper male screw portion 31 from the inside of the box body 4.

 Conventionally, when assembling the water vapor movement control device, the spacer cylinder and the film body are directly fitted inside the outer casing, which requires a lot of trouble in the assembling work. As in this embodiment, when the small chamber unit 2 is formed and fitted into the outer casing 3, the assembling work is simplified.

 In the water vapor transfer control device 1 of this embodiment, if a hole is formed in the box body 4 etc. and water unexpectedly enters the inside of the box body 4, the water is drained outside the box body 4. A drainage structure is provided.

 In order to demonstrate the ideal function of the water vapor transfer control device, it is necessary to have a breathing phenomenon between the inside of the humidity adjustment space and the outside air side as the temperature of the external environment changes. A weak seal is required to withstand a hermeticity of about 10 cm water column pressure, which is approximately equal to the water vapor pressure corresponding to dehumidification of 20 to 30% RH, which can be adjusted, around room temperature. However, it is difficult to drain water under the condition that once a large seal breakage or destruction, water intrusion due to an accident occurs, or under conditions where breathability is lost.

Therefore, until the intrusion of water, the airtightness of the space to be adjusted for humidity is ensured and the humidity adjustment function is fully demonstrated. On the other hand, if water enters due to unexpected damage on the 4th side of a box such as a seal, the amount of water vapor transferred due to humidity adjustment is exceeded. It is unlikely that the state of 5 will naturally recover in containers or boxes that contain electrical equipment. Therefore, in case of water intrusion, it was decided to secure the drainage by the drainage structure. At this stage, securing a drainage path is more important than respiration, and the ability to adjust humidity cannot be expected.

 The drainage structure is a mounting nut in which a slit 36 is formed in the upper male screw portion 31 formed in the main body cylindrical portion 30 of the outer casing 3 and is screwed into the upper male screw portion 31. 3 2 Notches 3 7 a and 3 7 b are formed so that the slit 3 6 and the notches 3 7 a communicate with each other with the water vapor transfer control device 1 attached to the box 4. Has been.

 As shown in FIG. 8, the mounting nut 3 2 has notches 3 7 a and 3 7 b formed on both upper and lower end faces thereof, and the notch 3 on the lower end side when the mounting nut 3 2 is screwed. 7a is formed so as to communicate with a slit 36 formed on the upper male threaded portion 31, so that the mounting nut 32 can be used upside down.

 A plurality (three in the embodiment) of the slits 36 are arranged at equal intervals (12.0 degrees intervals), and are formed by cutting from the upper end of the upper male screw portion 31.

 For example, if the notch is formed only on one end face of the mounting nut 32, there will be no notch on the end face of the mounting nut if the mounting direction is such that the end face that does not have the notch is turned downward. Therefore, there is a problem of blocking the drainage route.

 On the other hand, when the notches 3 7 a and 3 7 b are formed on the upper and lower end faces of the mounting nut 卜 3 2, the drainage path is formed by the notch 3 7 a located on the lower end side regardless of which face is facing downward This is a fail-safe function against incorrect installation.

In this embodiment, the outer shape of the mounting nut 卜 3 2 is formed in an octagon, the notch 3 7 a is formed in the center of each side of the octagon, and the notch 3 7 b Is formed at each corner of the octagon, and is arranged so that the eight notches 3 7 a and 3 7 b do not overlap each other when seen from the plane.

 Further, the back portion 3 7 c of the notches 3 7 a and 3 7 b is formed in an arc shape.

 If the inner part of the notch is square, the water accumulated at the bottom of the electrical box due to a water leakage accident, etc., freezes due to a temperature drop, and stress deformation occurs in the mounting nut 3 2 due to freezing and expansion. It is easy to cause cracks in the mounting nut 3 2 due to deterioration over time.

 Therefore, by forming the inner part of the notches 3 7 a and 3 7 b in an arc shape, the mounting nut 3 2 is prevented from being damaged or loosened due to stress concentration on the mounting nut 3 2 due to freezing and expansion. Can do.

 The small chamber unit 2 is fitted into the outer casing 3 while holding the drain gap 6 and the bottom view of the water vapor movement control device of FIG. As shown, a through hole 3 4 b communicating with the drainage gap 6 is formed.

 When a loss occurs in the box etc. 4 and external water flows into the box etc. 4, the water is stored inside the box etc. 4.

 In this way, even if water falls on the bottom of the box 4 etc., the water moves through the notch 3 7a of the mounting nut 3 2 through the slit 3 6 of the upper male thread 3 1 It becomes possible to flow into the control device 1 and drain to the outside through the drain gap 6 and the through hole 3 4 b of the ring plate 3 4 a.

Then, as shown in FIG. 11, at the upper end portion of the drainage gap 6, the water absorption between the step portion 60 formed on the upper inner surface of the outer casing 3 and the upper end of the small unit 2 is achieved. By attaching a porous ring body 51 excellent in water resistance and filling the water permeable gap S of this porous ring body 51 with a water-soluble sealing substance, the water permeable gap S is normally closed to close the drain gap 6. Occlude the water At the time of intrusion, the water-soluble seal substance is dissolved so that the drain gap 6 is opened to the outside.

 Instead of using the porous ring body 51, the drainage gap 6 and the upper end thereof may be directly closed with the water-soluble sealing substance itself.

 In this embodiment, a squeeze packing 61 is attached between the porous ring body 51 attached to the upper end of the drainage gap 6 and the upper end of the small chamber unit 2 as shown in FIG. Has been. In this case, the drainage gap 6 is not closed by the squeeze packing 61.

 The squeeze packing 6 1 prevents the drainage gap 6 from opening when the drainage gap 6 is wet by blowing from the outside, etc., and reduces the thermal expansion and shrinkage. have. In addition, the swelling of the porous ring body 51 changes the distance between the upper ends of the drainage gap 6 and the thermal expansion of the outer casing 3 causes the box 4 etc. to be in a dry state. The porous ring body 51 is elastically pressed by the squeeze packing 61 so that the drain passage gap 6 is not opened.

The squeeze packing 61 is mounted between the porous ring body 51 and the upper end of the small chamber unit 2. At this time, the small chamber unit as shown in FIGS. If the squeeze packing 6 1 is placed on the upper end surface of the second ring 2 as it is, the squeeze packing 61 will bite into the bottom surface of the porous ring body 51. 5 A drainage failure that prevents the flow of water through 1 will occur. Therefore, as shown in FIG. 18, a stepped portion 2 a is formed at the upper end of the outer periphery of the small chamber unit 2, and the squeeze packing 6 1 is placed in the stepped portion 2 a, so that It prevents the failure from occurring. In addition, a locking washer 9 is provided between the bottom wall 4 1 of the box or the like and the mounting nut 3 2. It is installed.

 This locking washer 9 prevents loosening of the mounting nut 3 2 in order to prevent the water vapor transfer control device 1 from falling off when it is mounted on a vibration-proof electric box for the purpose of improving vibration resistance. Is to do.

 Conventionally, it is known to use lock nuts or nylon nuts to prevent nuts from loosening due to vibration.

 In the water vapor transfer control device, the screw part for connection to the box is made of synthetic resin, and if a lock nut or nylon nut is used, deformation of the slit 36 or the upper male screw There was a problem that part 31 was easily damaged.

 In addition, when the mounting nut 3 2 is formed with the notches 3 7 a and 3 7 b, there is a high possibility that the upper male threaded portion 31 will be damaged in the same manner, and there is a possibility of natural dropout.

 Used for connection to box etc. 4 Ring 3 Box 3 etc. sandwiched between outer cylinder casing 3 and mounting nut 3 2 even if the width of the compression force that gives the elastic force of 5 3 is increased The vibration of the bottom wall 4 1 may cause stress on the mounting nut 3 2 and may result in loosening of the mounting nut 3 2.

 Furthermore, when the O-ring 3 5 is installed inside the box body 4 etc., the water accumulated at the bottom of the box will block the drainage route to the slit portion 36, and the 0-ring 3 5 Even if you forget to attach or damage the box, etc., there must be a way to increase the frictional force between the inner wall of the bottom wall 4 1 and the mounting nut 3 2 and secure a drainage path. 4 is formed so that a locking washer 9 is attached between the bottom wall 4 1 of 4 and the mounting nut 3 2.

As shown in FIG. 7, a plurality of locking claws 90 (in the embodiment, 12 pieces) 90 are projected at equal intervals (30 degree intervals) on the inner periphery, as shown in FIG. Claw 90 is the side (upward side) 9 1 facing the loosening direction of mounting nut 3 2 (arrow A direction), and the side of loosening direction of mounting nut 3 2 (downward side) 9 Inclined so that 2 is facing down.

 In this case, the locking claw 90 is in contact with the upper male screw portion 3 1 of the outer casing 3 but is inclined at an angle that makes it difficult to fit into the screw groove. Therefore, when the mounting nut 3 2 is tightened against the upper male threaded portion 3 1, the locking washer 9 does not hinder tightening.

 Further, the upper side 91 is locked to the bottom surface of the mounting nut 3 2 by giving elasticity in a direction to return to the inclined state with respect to the tightening of the mounting nut 32, and the lower side 9 2 is formed so as to be locked to the upper surface of the bottom wall 4 1 of the box or the like 4.

 In addition, by forming the locking claws 9 with a different number (12 in the embodiment) than the number of the plurality of notches formed in the mounting nut 32 (8 in the embodiment), As shown in Fig. 9, the locking washer 9 is mounted between the bottom wall 4 1 of the box body 4 and the mounting nut 3 2 in a state where the locking washer 9 is deformed into a wave shape by tightening the mounting nut 3 2. It is formed so that.

 By providing this locking stopper washer 9, it is possible to prevent the mounting nut 3 2 from loosening due to vibration.

 That is, since the upward side 91 is locked to the bottom surface of the mounting nut 32, the downward side 92 is locked to the top surface of the bottom wall 41 of the box body 4 etc. The looseness of the mounting nut 3 2 can be prevented by the action of a strong tension bar.

Since the locking washer 9 is deformed into a wave shape when the mounting nut 3 2 is tightened, between the locking washer 9 and the mounting nut 3 2 and between the locking washer 9 and the box 4 etc. Since there is a gap between them and water can flow into the gap by utilizing the capillary phenomenon, it is formed from the notch 3 7a formed on the end face of the mounting nut 3 2 to the upper male thread 3 1 A drainage channel that flows into the outer casing 3 through the slit 36 can be secured. The locking washer 9 has no top and bottom, and the above effect can be achieved even if it is installed upside down.

 As described above, the water-permeable gap S of the porous ring body 51 is filled (impregnated and dried) with a water-soluble sealing substance that is solid in a dry state and has airtightness.

 When water enters, the upper end mesh plate 52 is positively drained to the porous ring body 51 side. As a result, when more than a certain amount of water enters, the porous ring body 51 cannot swell due to the water absorbed in the porous ring body 51 and cannot maintain a solid form. The water-soluble sealing substance that existed in solid form in the water-permeable gap S of the ring body 5 1 elutes into the water, opens the drainage gap 6 and allows it to drain outside through this drainage gap 6. become.

 The problem at this time is maintaining the sealing performance of the porous ring body 51 by the squeezed air from the outside air side.

 The wetness of the porous ring body 51 depends on the amount of infiltrated water, that is, the amount of water in contact with the porous ring body 51, and the retrograde invasion of the squeezed air from the outside air side. Also affected by. As a means for solving such an adverse effect due to the contradiction, the base material of the porous ring body 51 is formed of, for example, felt-like porous fibers, and a water-soluble seal is formed thereon. Use felt material impregnated with material.

 As a result, the water-soluble sealing material contained in the ferrous material also affects the film body 2 2 below the upper end mesh plate 52 and causes surface contamination. The air passage has already been secured, the airtightness necessary for the breathing phenomenon has been destroyed, and the air breathing phenomenon no longer occurs or decreases in the space of the small room unit 2. .

In addition, a porous material such as felt material is provided in the drainage path that serves as a ventilation path with the outside air. The effect of air filtering is to prevent the intrusion of dust in the box due to the breathing phenomenon in the box or container.

 Also, the drain gap 6 is designed with a calorific value, which is surrounded by a material with a low heat conduction rate, for example, synthetic resin, which is hard to condense, and the outside air ring plate 3 4 a 4 b keeps the conditions as easy to dry as possible. The design of the through hole 3 4 b can be arbitrarily performed under this condition.

 However, as compared with the conventional method of providing a drain hole to the outside of the box, etc., the inside of the box, etc.4 is filtered by the felt material. Even if an incomplete breathing phenomenon occurs, the humidity adjustment function is maintained.

 Further, depending on the degree of compression of the porous seal 51, the drainage capacity can be adjusted by the capillary phenomenon.

 The compression of the porous sealing body 51 can be adjusted by adjusting the tightening force with the assembly nut 卜 3 4 for the small chamber unit 3 housed inside the outer casing 2. It is also possible to prevent the compression from being adjusted at the time of wearing.

 If this tightening force is strong, the drainage channel of the effective cross-sectional area of the water-soluble sealing substance will be small, and if it is loose, it will be slow airtight.

 In addition, the drainage gap 6 also serves as a space provided between the small chamber unit 2 and the outer casing 3, and also acts as a heat retaining cavity in a situation where it does not act as a drainage path. It works to maintain the humidity adjustment function. Therefore, the heat retention can be adjusted by adjusting the effective sectional area of the through hole 3 4 b provided in the ring plate 3 4 a.

In addition, the felt material is shown as a material of the porous ring body 51 in the embodiment, but it is also possible to use a porous fibrous material having compressibility. it can.

 In addition, the heat resistance of water-soluble sealing materials is important, and in outdoor electrical boxes, temperatures exceeding 65 ° C are also observed. Therefore, oblate, cellulose, agar protein, starch, etc., which are solid in a normal dry state and have airtightness, are useful as a water-soluble sealing substance.

 The porous ring body 51 is filled with the water-soluble sealing substance 8 as shown by the hatched portion in FIG. 12 at the outer peripheral side portion of the porous ring body 51. Is arranged so as to be separated from the film body 2 2.

 Thus, if the water-soluble sealing substance 8 is positioned away from the membrane body 22, the degradation of the membrane body 2 2 can be prevented, and the internal space up to the limit of the sealing performance that protects the space of the box body 4 etc. In addition to being able to adjust the humidity of the space, it is possible to ensure a drainage path due to direct and unforeseen water intrusion due to the breakage of the sealing performance of boxes and containers that have reached the limit. It is a useful structure.

 In addition, when water-absorbing substances are used to ensure the airtightness of the space where the humidity of the box or the like 4 is adjusted, it is considered that the water-soluble substance is decomposed by bacteria or spiders that exist in nature. The seal substance 8 may be mixed with an antibacterial agent or an antibacterial agent.

 The most useful substances among these antibacterial materials are copper, silver powder and other compounds, and substances having such an origami effect may be disposed in the drainage gap 6. . By combining the origami effect used for the membrane body with ensuring the safety of the drainage system, the treatment method is limited even when it is turned into waste, which is economical.

 In addition, an insect repellent may be mixed in the water-soluble sealing substance 8.

When the fiber used for the material of the porous ring body 5 1 is hygroscopic fiber 51 as shown in Fig. 13, the fiber absorbs moisture even at the same time as the water-soluble sealing substance 8 or at low humidity (65% PH). As shown in Figure 14 Thus, when the fibers are non-hygroscopic fibers 5 1 b, the fibers are unlikely to absorb moisture, so until the water comes into direct contact with the water-soluble sealing substance 8, as shown in the graph of Figure 15 There is an advantage that it is easy to maintain hardness (air tightness). Further, since the porous ring body 51 is annular, drainage tends to start early even if water comes from any direction on the bottom of the box.

 FIGS. 13 and 14 are cross-sectional views in which the outer peripheral portion of the porous ring body 51 is filled with a water-soluble sealing substance 8 (indicated by hatching), and FIG. 15 is a hygroscopic material. 5 is a graph showing changes in hardness due to water absorption of fiber 51a and non-hygroscopic fiber 51b.

 Regarding the water-soluble sealing material of the porous ring 51, it is solid in a normal dry state and can be airtight, such as wafer, cellulose, agar protein, gelatin, starch, etc. In the case of using only the sealing material, it is conceivable to mix an insect repellent to prevent insect damage from insects, but the tannin used as such an insect repellent has an acidity of pH 3-4. There is a problem that it is expensive.

 In addition, if the material impregnated in the porous ring 51 is only a solid dissolved material, the occurrence of the collapse phenomenon after deformation due to water absorption expansion is slow, and it takes a long time (3 mm thick) to generate the water path. The result of a test with a porous ring body requires 24 hours or more).

 In response to these problems, a drainage structure that requires more reliable drainage function, agile reaction, and high durability is required.

 Therefore, the tannin used as the insect repellent has a low acidity of pH 3-4, but the pH is adjusted after mixing the tannin, and sodium bicarbonate is added for the purpose of adjusting to almost neutral. To do.

For example, in an electrical box suspended on a pillar, water stored in the electrical box due to an accident may fall downward. In such cases, the pH of the falling water should be neutral. Also, the preservative is However, it is desirable to be composed of materials.

 Tannin is an antiseptic substance extracted from so-called persimmon astringents, and since it has an astringent effect, it is dangerous to use high concentrations.

 However, even if the pH is adjusted to be neutral, and if it is filled with complex oxalic acid, the active ingredient of ninnin can be easily increased as a water-soluble component in the incomplete gel hydrate. Therefore, it is thought that it is easy to obtain an antiseptic effect.

 In addition, a method using salting out may be used to adjust the viscosity of the gel body.

 In this case, agglomeration of hydrophilic colloid composed of force lpoxyl groups constituting the cross-linked gel structure molecule contained in the gel body is utilized. At this time, when an electrolyte is added, the hydrophilic colloid is aggregated. Analyze.

The order from the strong salting out ion to the weak ion in the protein is S0 ₄ —>F—> C 1 —> B r—> N0 ₃ —> 1 1> SCN-, monovalent For cations, L i +> N a ⁺ 〉 K +> R b +> C s +, and for divalent cations, M g ²⁺ > C a ²⁺ > S r ²⁺ > B a ²⁺ etc. (Physical physics: approach to pharmaceutical science: Hiroyuki Oshima, Tetsuro Handa: Nanedo Co., Ltd .: 20 July 2003 issue: p. 1 2 5) Then, the viscosity of the colloid may be adjusted.

 However, among these, anions such as C 1 and I 1 are known as highly corrosive metals, and it is preferable not to use them.

 Since a large amount of Na, K, Ca, etc. is contained in water vapor in the atmosphere, it is predicted that the porous ring body 51 will have few respiratory phenomena, such as changes in physical properties due to aging, even in dry conditions. It is safe.

In order to promote the disintegration and dissolution of the drug for the purpose of improving hydration, in general, the disintegrant is voided by using a disintegration mechanism by capillary action to improve wetting and to promote the disintegration. To absorb water and widen the gap There is a known method of disrupting the matrix by reducing the interparticle bonding force (Manabu Hanano, Katsuhide Terada, Toshio Ito, edited by P. 5 9-6 2: Pharmacology: Revised 6th edition: 1 9 8 September 15th, 4th, 1st edition, 1st edition issued: 2000 June 1st edition, 6th edition, 2nd edition: Nanedo Co., Ltd.).

 By the way, in the case of the water vapor movement control device 1, the breathing phenomenon that occurs in accordance with the change in the environmental temperature where the box 4 or the like is placed gives stress to the drainage structure of the water vapor movement control device 1.

 Therefore, the properties required for a water-soluble sealant are required to improve the solid properties in the dry state and dissolve immediately when wet.

 To that end, it is necessary to prepare a drainage structure that is easily wetted, and to ensure the properties of a sealant when it is dry.

 Therefore, felt-like fibers with high water absorption are formed in an annular shape, and air is left in the space that is the pathway of water in order to adsorb highly hydrated substances and promote water penetration. There is a need.

 For this purpose, an emulsion was obtained by partially coagulating water-soluble substances such as oblate, cellulose, agar protein, gelatin, and starch with tannin having low pH, and obtained by vigorous stirring. The incomplete gel is neutralized with sodium hydrogen carbonate.

 Next, the mixture of hydrates obtained in this way is adsorbed on a ferrous seal body and dried, so that the felt that was present in water is dried as shown in Fig. 11. As a result, it becomes a water-permeable gap S occupied by air, and in the part where the gel body is adsorbed, it becomes an ideal water-absorbing body to which oblate, cellulose, agar protein, gelatin, starch, etc. adhere as solid matter.

 These substances absorb water and swell, promote the collapse while deforming the porous ring body 51 as the seal body, and can drain the water in a short time.

For example, the test result with a porous ring body of 3 mm thickness is 1 minute 30 seconds It was observed that drainage started in 3 "minutes.

 If there was only a solid dissolved material with only swelling properties, the collapse phenomenon after deformation due to water absorption expansion was slow, and it took a long time to generate the water pathway.

 For example, the test result with a porous ring body having a thickness of 3 mm required more than 24 hours.

 That is, the voids occupied by the incomplete gel body emulsion water are dried to form the irregular water-permeable voids S.

 The water-permeable voids S are supported by the fibers, and have a skeleton structure made of a dry solid that adheres to the fibers or communicates between the fibers.

 Also, since the total path distance of the solids that disintegrate is shortened, the disintegration occurs soon after contact with water.

 On the other hand, in the case of a dry product or a dry solid product having a complete gel body, voids are difficult to obtain, and it tends to be a lump of dry solid product.

 In addition, since the total path distance of the solids that collapse is very long, a very long period of time will elapse after contact with water.

 Disintegration can be promoted by using a swellable substance such as the above as an element that improves the solubility in the porous ring body 51. However, as a factor affecting dissolution,

 a) It is known that crystalline polymorphs (different in the way of three-dimensional arrangement of molecules in a crystal despite the same compound) show different solubility depending on the form.

b) Amorphous materials (those that do not have a certain regularity in the three-dimensional molecular arrangement in a solid) exhibit higher solubility than crystals.

c) Hydrates (containing water molecules in a constant stoichiometric ratio in crystals) are said to be less soluble than anhydrides but stable in terms of energy. ing.

d) Coso 1 vency (When it is mixed with ethanol, propylene darlicol, glycerin, tuna coal, etc. as water-soluble organic solvent in a water-insoluble substance, it is remarkably different from the case of each. Phenomenon that increases solubility).

e) It is known that salts and coprecipitates are easily dissolved in water.

 (Edited by Manabu Hanano, Katsuhide Terada, Toshio Ito: P p. 6 8—7 1: Revised Pharmacology 6th edition: 1 9 8 4 September 15th 1st edition 1st edition issued: 2 0 0 5 June 1st, 6th edition, 2nd edition issued: Nanedo Co., Ltd.).

 As a means for improving the solubility, the above-mentioned wafers, cellulose, agar protein, gelatin, starch, etc., which are crystalline polymorphs such as a) and b), which are amorphous and hydrated, etc. Is acidic and gelled.

 Among general salts, Na C 1 is known as a metal corrosive substance, but glutamic acid has a simple force lpoxyl group and absorbs water, but has low corrosiveness and low harm to living organisms.

 It is safe because it is used for food.

 In order to increase the mixing ratio of tannin in a mixture of gel and non-gel emulsions, ethanol, propylene glycol, glycerin, tuna coal 400, etc. can be used. It is recommended to adjust the solubility by using the effect.

 Of these, ethanol has the effect of promoting drying and is suitable for shortening the time required for the production process of the drainage mechanism. Propylene glycol is safe because it has excellent anti-mold properties and is frequently used in hair detergents. On the other hand, dalyserin is likely to cause membrane fouling.

By the way, if the porous ring body 5 1 itself has high water absorption and moisture absorption, water vapor is adsorbed from the outside air, which may cause a large air leak. You could think so.

 As countermeasures, if the fibers of the porous ring 51 are made of fibers with high water absorption, such as nylon or polyester, the water absorption is easy to maintain. It is necessary to devise measures that make it easy to maintain elasticity.

 Therefore, an emulsification was generated by partially coagulating water-soluble substances such as the aforementioned oblate, cellulose, agar protein, gelatin, and starch with tannin having a low pH, and this was incompletely stirred. The mixture of hydrates obtained by neutralizing the gel body with sodium hydrogen carbonate is adsorbed on the felt seal body and dried.

 As a result, solids such as oblate, cellulose, and agar protein harden into a sponge-like porous shape in the part where the gel body is adsorbed, resulting in a skeleton structure (bone marrow tissue-like), increasing hardness, and moderate This is convenient because of its elasticity.

 In addition, in order to suppress the moisture absorption of the water vapor on the outside air side, the air flow in the contact space with the outside air is suppressed and, as shown in FIG. It is effective to form a strong film 51a using glue or the like.

 In Fig. 11, the solid line arrows indicate the drainage route, and the broken line arrows indicate the inflow of water vapor from the outside air.

 The coating 51a is formed on the inner peripheral surface, the outer peripheral surface, and the bottom surface of the porous ring body 51. In this case, the Arabic paste coating 5la that hardly dissolves is formed on the inner side of the Arabic paste. A saturated region 5 1 b, which is an incompletely dried portion, and a diffusion region 5 1 c, in which the felt paste is impregnated with Alabia paste, are formed.

In addition, as a water-soluble base that is easy to form a film 51a on the surface by curing, the capsule of Japanese Pharmacopoeia containing gelatin and other materials besides Arabic glue. It is preferable to coat the surface of the porous ring body 51.

 Next, FIG. 16 shows a reference example of the present invention.

 In this reference example, a drain pipe 70 is provided in the wall thickness of the inner cylindrical body 21 in the axial direction, and the drain pipe 70 is formed in place of the drain channel gap 6 in the present invention. The upper end portion of the drain pipe 70 is formed in a slightly large diameter portion 71, and a water-soluble sealing material 8 is filled from the large diameter portion 70 to the stepped portion 60.

 In this drainage pipe 70 method, drainage starts when water reaches the drainage pipe 70, but when the leaking part of the box or container is small, the drainage pipe 70 is filled with water. Capillary pressure is required until it is opened to the atmosphere, and the drainage capacity is likely to be limited. Industrial applicability

 The water vapor movement control device according to the present invention (Claim 1) is formed in the small chamber unit in which the spacer cylinder and the film body are incorporated in the inner cylinder, so that the small chamber unit is formed inside the outer casing. The assembly work can be done simply by mating with the, and the assembly work can be done easily.

 In addition, since the drainage gap formed between the small chamber unit and the outer casing is normally blocked by a water-soluble sealing substance, water vapor and air do not enter from here, and normal water vapor movement control is performed. Can be done.

 When water exceeding the water vapor processing capacity enters unexpectedly, the water-soluble sealing substance dissolves and the drainage channel gap is opened, so that water can be drained to the outside through this drainage channel gap.

In addition, the drainage gap is designed with a calorific value that is unlikely to condense. For example, because it is made of synthetic resin, a water-soluble sealing substance is retrograde from the outside air side. It can prevent dissolving.

 Such a drainage structure is considered to be a necessary technology in the electric industry to ensure the spread of water vapor transfer control devices.

 In addition, if notches are formed on both upper and lower end faces of the mounting nut (Claim 2), the drainage path can be secured by the notches regardless of which surface is facing downward. It becomes. In addition, if the inner part of the notch formed in the mounting nut is formed in an arc shape (claim 3), the mounting nut can be prevented from being damaged or loosened due to stress concentration on the mounting nut due to freezing and expansion. it can.

 When the locking washer is used (Claim 4), the upper side is locked to the bottom surface of the mounting nut, and the lower side is locked to the upper surface of the bottom wall of the box, etc. The mounting nut can be prevented from loosening due to vibration.

 Also, since the locking washer is deformed into a wave shape by tightening the mounting nut, gaps are created between the locking washer and the mounting nut, and between the locking washer and the bottom wall of the box, etc. Capillary phenomenon can be used to allow water to flow into this gap, so drainage that flows into the outer casing from the notch formed on the end face of the mounting nut through the slit formed on the upper male thread. A route can be secured.

 Further, when a porous ring body is attached to the upper end of the drainage channel gap and the water-permeable sealing substance is filled in the water-permeable gap of the porous ring body (Claim 5), the drainage channel is formed by the porous ring body. The gap is always closed with a water-soluble sealing substance to prevent the intrusion of water vapor or air from the outside air. If water inadvertently enters, the gap between the drainage channels is opened by the dissolution of the water-soluble sealing substance, and the water is removed. It can be drained to the outside.

Further, when a porous ring body is formed by adsorbing a mixture of an incomplete gel body and a hydrate to a seal body which is a base material of the porous ring body and drying it (Claim 6). In the part where the body is adsorbed, solid matter is sponge Since it is hardened in a porous shape, it becomes harder and has an appropriate elasticity, resulting in an ideal water absorber. Further, when a film is formed on the surface of the porous ring body (Claim 7), it is effective to suppress moisture absorption of water vapor from the outside air. Further, when a squeeze packing is mounted between the porous ring body and the small chamber unit (Claim 8), the porous ring body is inertially pressed by the squeeze packing, so that the drainage occurs due to the swelling of the porous ring body. It is possible to prevent the gap between the upper ends of the channel gap from changing, and the drain channel gap from being opened due to the thermal expansion of the outer casing even though the box body side is in a dry state.

Claims

The scope of the claims

1. A plurality of spacer cylinders are fitted inside the inner cylinder, and a gas permeable and moisture permeable membrane body and a conductive porous body are hermetically sealed between the spacer cylinders. Is held in a compressed state to form a chamber unit in which a chamber partitioned by this membrane body is formed,

 The upper male screw part formed at the upper end is inserted into a mounting hole formed in the bottom wall of the box body, and the mounting nut is screwed into the upper male screw part from the inside of the box body, etc. A cylinder casing is attached,

 The small chamber unit is fitted inside the outer casing while holding the drainage gap,

 Water accumulated inside the box or the like flows from the notch formed in the end face of the mounting nut into the inside of the outer cylinder casing through the slit formed in the upper male screw portion, and the drainage channel Shaped to drain outside through the gap,

 The water vapor movement control device characterized in that the drainage gap is normally closed by a water-soluble sealing substance, and the water-soluble sealing substance dissolves when water enters and the drainage gap opens to the outside. .

 2. In the water vapor movement control device according to claim 1,

 By forming notches on both upper and lower end faces of the mounting nut 、, and so that the notched portion on the lower end side communicates with the slit formed on the upper male screw portion in the threaded state of the mounting nut 卜, A water vapor movement control device formed so that the mounting nut 卜 can be used upside down.

 3. In the water vapor movement control device according to claim 1 or 2,

 The water vapor movement control apparatus in which the inner part of the notch is formed in an arc shape.

4. In the water vapor movement control device according to any one of claims 1 to 3, A locking washer is installed between the bottom wall of the box and the mounting nut,

 This locking stopper washer has a plurality of locking claws on its inner periphery that protrude at equal intervals.

 The locking claw is formed so as to be inclined so that the side facing the loosening direction of the mounting nut faces upward and the side of the mounting nut loosening direction faces downward, and against the tightening of the mounting nut. The upper side is locked to the bottom surface of the mounting nut with the inertia in the direction to return to the inclined state, and the lower side is locked to the upper surface of the bottom wall of the box, etc.

 In addition, by forming the locking claws in a number different from the number of the plurality of notches formed at equal intervals on the mounting nut 卜, the loosening washer is waved by tightening the mounting nut. A water vapor movement control device formed so as to be mounted between a bottom wall of a box or the like and a mounting nut in a deformed state.

5. The water vapor movement control device according to any one of claims 1 to 4, wherein the upper end portion of the drainage channel gap is formed between the step formed on the upper inner surface of the outer casing and the upper end of the small chamber unit. A water vapor movement control device formed and mounted with a porous ring body with excellent water absorption at the upper end portion, and a water-permeable sealing substance filled in a water-permeable gap of the porous ring body.

6. In the water vapor movement control device according to claim 5,

 The porous ring body produced an emulsion in which water-soluble substances such as wafer, cellulose, agar protein, gelatin, and starch were partially coagulated with tannin having a low pH, and this was strongly stirred. It is formed by adsorbing and drying a mixture of hydrates obtained by neutralizing a complete gel body with sodium hydrogen carbonate to a neutral body. Water vapor movement control device.

7. In the water vapor movement control device according to claim 5 or 6,

Water vapor movement control with a coating formed on the surface of the porous ring body by coating a water-soluble base that is easy to form by curing apparatus.

 8. The water vapor movement control device according to any one of claims 1 to 7, wherein a water vapor is attached between the porous ring body attached to the upper end portion of the drainage channel gap and the small chamber unit. Movement control device.

9. The water vapor movement control device according to any one of claims 1 to 8, wherein the conductive porous body is a hexagon having an inner angle of 120 degrees, and the lengths of two opposing sides are By forming twice the length of the other side, it has a flat hexagonal mesh part formed by two long sides and four short sides,

 A water vapor movement control device formed by repeatedly connecting the mesh portions as unit patterns so as to form equilateral triangles by the long sides of adjacent mesh portions.