WO2016208193A1

WO2016208193A1 - Gas-adsorbing device and evacuated insulating material using same

Info

Publication number: WO2016208193A1
Application number: PCT/JP2016/003026
Authority: WO
Inventors: 里紗谷口; 山本　直樹; 和也嶋
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2015-06-24
Filing date: 2016-06-23
Publication date: 2016-12-29
Also published as: CN106794413B; CN106794413A

Abstract

A gas-adsorbing device (4) is provided with: a packaging bag (5) having a gas barrier property and flexibility; a gas adsorbent (6) vacuum sealed inside the packaging bag (5); and a porous member (7) disposed adjacent to the gas adsorbent (6) in a planar state inside the packaging bag (5). Thus, this device can be used for diverse evacuated insulating materials because the same can be produced efficiently, can be provided inexpensively, and is thin and flexible, and further, vacuum insulating material that can maintain gas adsorbing capabilities over a long period of time can be provided.

Description

Gas adsorption device and vacuum heat insulating material using the same

The present invention relates to a gas adsorption device and a vacuum heat insulating material using the same.

In recent years, energy conservation has become an urgent issue for household appliances from the viewpoint of preventing global warming. In particular, in a heat and cold insulation device such as a refrigerator, a freezer, and a vending machine, a heat insulating material having excellent heat insulating performance is required from the viewpoint of efficiently using heat.

A vacuum heat insulating material has been proposed as a heat insulating material having excellent heat insulating performance. This is because a core material having a high gas phase volume ratio and fine voids, such as glass wool, is formed in a bag-like laminate film (hereinafter referred to as a jacket material) processed into a bag shape. It is produced by storing and sealing the core material storage space by reducing the pressure.

The vacuum heat insulating material can obtain high-performance heat insulating performance by raising the degree of vacuum inside. However, raising the degree of vacuum is hindered by the gas present inside the vacuum insulation. The gas existing inside the vacuum heat insulating material is roughly divided into the following three types. One is the gas that remains without being evacuated at the time of vacuum insulation material preparation, and the other is the gas generated from the core material and the jacket material after being vacuum-sealed (adsorbed to the core material and the jacket material). The remaining gas and gas generated by the reaction of unreacted components of the core material), and the other one is gas that passes through the jacket material and enters from the outside.

In order to adsorb and remove these gases, a gas adsorbing device is hermetically sealed together with the core material in the jacket material of the vacuum heat insulating material.

The gas adsorption device is configured by filling a gas adsorbent in a gas barrier container and vacuum-sealing the gas barrier container (see, for example, Patent Document 1).

FIG. 21 is a diagram showing a configuration of a conventional gas adsorption device 1100 described in Patent Document 1. As shown in FIG.

A conventional gas adsorption device 1100 is a constricted portion 1104 provided in an opening 1103 of a gas barrier container 1101 under a reduced pressure, in which a gas adsorbent 1102 is filled in a metal cylindrical gas barrier container 1101 in a vacuum or an argon gas atmosphere. The glass sealing material 1105 that has been melted is allowed to flow into and cooled and solidified. Thereby, the opening 1103 of the gas barrier container 1101 is sealed.

In the conventional gas adsorption device 1100, the gas adsorbent 1102 in the gas barrier container 1101 is isolated from the external atmosphere at the time of storage before being applied to the vacuum heat insulating material, so that the performance deterioration of the gas adsorbent is prevented. The Further, when applied to a vacuum heat insulating material, an external force is applied to the gas barrier container 1101 from the outside of the envelope of the vacuum heat insulating material, the glass sealing material 1105 is broken, and the inside and outside of the gas barrier container 1101 communicate. As a result, the gas adsorbent 1102 adsorbs the gas present in the jacket material.

As described above, the gas adsorbing device 1100 can exhibit a good heat insulating property to the vacuum heat insulating material by adsorbing the gas in the jacket material of the vacuum heat insulating material and maintaining the degree of vacuum.

In the conventional gas adsorption device 1100, the molten glass flows into the constriction 1104 of the gas barrier container 1101 by melting the glass, so that the molten glass stays and adheres to the inner surface of the constriction 1104 due to surface tension. Then, the molten glass is cooled and solidified while being held in the narrowed portion 1104, whereby the narrowed portion 1104 is sealed. For this reason, time for melting and cooling and solidifying the glass is required, and it is difficult to increase productivity. At the same time, a special and expensive vacuum heat treatment furnace or the like is required to control the melt viscosity of the glass with high accuracy. Due to these problems, there is a problem that it is difficult to reduce the cost of the gas adsorption device 1100.

Further, the glass sealing material 1105 broken by applying an external force causes the inside of the gas barrier container 1101 to communicate with the inside of the vacuum insulation material through the cracked portion. At this time, in order to generate a crack that allows the inside and outside of the gas barrier container 1101 to communicate with each other, the glass sealing material 1105 needs to be a lump having a certain thickness. In addition, in order to secure a flow path of the gas generated when the gas adsorbent 1102 is heat-treated and the gas generated when activated, the opening of the constricted portion 1104 serving as a sealing port of the gas barrier container 1101 has a certain amount. It is necessary to have a cross-sectional area. Also from this point, it is necessary to make the glass sealing material 1105 for melting and sealing the narrowed portion 1104 into a lump having a certain thickness.

For this reason, the gas barrier container 1101 has at least the thickness of the lump of the glass sealing material 1105 and the thickness of the plate thickness of the gas barrier container 1101, and there is a limit to reducing the thickness.

Furthermore, since the gas adsorption device 1100 includes the glass sealing material 1105 having a high melting temperature, the gas barrier container 1101 also needs to be made of a material that can withstand high temperatures, for example, metal, and is a rigid body. Therefore, the vacuum heat insulating material cannot be deformed in accordance with the shape of the device used, and there is a limit to providing flexibility, and there is a problem that the applied device is limited.

On the other hand, recently, along with the improvement of the heat insulation performance of vacuum insulation materials, depending on the required insulation capacity of the equipment used, vacuum insulation materials with a thickness of several millimeters and curved surface or cylindrical shape can be processed. For example, vacuum heat insulating materials used in water heaters and the like are also being commercialized. Thus, there is a demand for a gas adsorption device that can also be applied to vacuum heat insulating materials that are being commercialized, and the needs are becoming apparent.

Furthermore, the use of the vacuum heat insulating material is expanding from the conventional heat insulating material for heat insulation equipment such as a refrigerator to the heat insulating material for building materials and LNG ships in recent years. Therefore, the vacuum heat insulating material is required to be large in size and maintain high heat insulating properties for a longer period. For this reason, increasing the filling amount of the gas adsorbent has also become a problem.

However, when the filling amount of the gas adsorbent is increased, if the configuration of the conventional gas adsorbing device 1100 is maintained, more gas is generated when the gas adsorbent is heat-treated and more gas is generated during activation. As a result, enormous time is required for the heat treatment, leading to a decrease in productivity.

Therefore, increasing the filling amount of the gas adsorbing material without reducing the productivity, or increasing the filling amount of the gas adsorbing material at the same time as raising the productivity is an issue.

JP 2013-68323 A

The present disclosure has been made in view of the above-mentioned problems, has high productivity, is thin and flexible, and can increase the filling amount of the gas adsorbing material to maintain the gas adsorbing ability over a long period of time. And a vacuum heat insulating material using the gas adsorption device.

The gas adsorption device according to the present disclosure includes a gas bag and flexible packaging bag, a gas adsorbent sealed under reduced pressure in the bag, and a gas adsorbent adjacent to the gas bag in a planar state. And a porous member disposed.

In the present disclosure, “a porous member arranged adjacent to the gas adsorbent in a planar state” means that a surface other than the largest area among the surfaces constituting the porous member is a gas adsorbent. It is arranged next to each other.

Further, in the present disclosure, the “adjacent arrangement” does not mean only when the gas adsorbent and the porous member are arranged adjacent to each other in a contact state, but between them, some member, for example, the first As illustrated in the second embodiment, it includes those arranged next to each other through a moisture adsorbing material or the like.

In this disclosure, the “shape” of the porous member may be a shape other than a flat plate shape such as a polyhedron or a cylindrical body.

Thereby, the gas adsorption device of the present disclosure can be manufactured by performing thermal welding after the pressure is reduced using a general vacuuming apparatus. When the inside of the sachet in which the gas adsorbent is inserted is sealed under reduced pressure, the inside of the sachet is sucked and depressurized from the porous member side toward the gas adsorbent, so that the gas adsorbent in the sachet is porous. The presence of the member can prevent suction and exhaust from the inside of the bag. Therefore, it can be manufactured without using a special device, and can be sealed under reduced pressure without slowing the vacuuming speed, thereby improving productivity and providing at low cost.

Further, the gas adsorbing material and the porous member are arranged adjacent to each other in a planar state in a flexible bag. Thereby, compared with the case where the gas adsorbent and the porous member are arranged in a polymerized arrangement (arranged so that the surfaces having the largest areas of the gas adsorbent and the porous member are in contact with each other), the thickness is thin and curved. It can be easily deformed, and can also be applied to a thin vacuum heat insulating material of about several millimeters, a vacuum heat insulating material used by being curved in an arc shape, and the like.

Moreover, by increasing the plane width dimension of the sachet, the amount of the gas adsorbent can be increased while keeping the thickness thin, and the gas adsorption capacity can be made sustainable over a long period of time. it can. That is, the gas adsorption capacity can be maintained over a long period of time while realizing an expanded application to various vacuum heat insulating materials.

As described above, the present disclosure is highly productive, can be provided at a low cost, and is thin and flexible, so that it can be applied to a wide variety of vacuum heat insulating materials. It is possible to provide a gas adsorption device and a vacuum heat insulating material using the gas adsorption device with sustainable adsorption capacity.

A first aspect of the present disclosure includes a gas bag having flexibility and a gas barrier, a gas adsorbent sealed under reduced pressure in the bag, and a gas adsorbent in a flat state inside the bag. It is a gas adsorption device provided with the porous member arranged adjacently.

Thus, the gas adsorption device can be manufactured by heat welding after reducing the pressure using a general vacuuming device. When the inside of the sachet in which the gas adsorbent is inserted is sealed under reduced pressure, the inside of the sachet is sucked and depressurized from the porous member side toward the gas adsorbent, so that the gas adsorbent in the sachet is porous. The presence of the member can prevent suction and exhaust from the inside of the bag. Therefore, it can be manufactured without using a special device, can be sealed under reduced pressure without slowing the vacuuming speed, can improve productivity, and can be provided at low cost.

In addition, since the gas adsorbent and the porous member are disposed adjacent to each other in a flat state in the flexible wrapping bag, the thickness is larger than the case where the gas adsorbent and the porous member are arranged in a polymerized manner. Can be made thin and easily deformed such as curved. Therefore, the present invention can be applied to a thin vacuum heat insulating material of about several millimeters, a vacuum heat insulating material used by being bent in an arc shape, and the like. Furthermore, by increasing the planar width dimension of the wrapping bag, the amount of the gas adsorbing material can be increased while keeping the thickness thin, and the gas adsorbing ability can be maintained over a long period of time.

Next, the second aspect of the present disclosure is a configuration in which, in the first aspect, an intersecting surface portion of the porous member that intersects the surface adjacent to the gas adsorbent is adhered to the wrapping bag.

In the present disclosure, the term “adhesion” refers to the case where the inner surface of the sachet is bonded to the surface of the porous member by thermal welding or an adhesive, as described in the embodiment, or by atmospheric pressure or external force. This includes a state in which it is pressed against the surface of the porous member and in close contact therewith.

As a result, when the inside of the vacuum heat insulating material and the inside of the gas adsorption device are communicated, if the wrapping bag is perforated at the crossing surface portion of the porous member, the gas from the outside of the wrapping bag is adsorbed through the porous member. It will be adsorbed by the material. Thereby, the gas adsorption speed of the gas adsorbent can be arbitrarily set and controlled by the pore diameter and the porosity of the porous member. As a result, while obtaining the effect of the first aspect described above, the dispersion width of the gas adsorption rate is reduced to stabilize the adsorption performance, and the gas adsorption rate is decreased to increase the gas adsorption capacity for a longer period. Can last for a long time.

That is, in the configuration in which the glass sealing material is crushed and communicated as in the conventional gas adsorption device, the communication area caused by the crack formed by being crushed becomes a matter of course, and the gas adsorption speed is fast and slow. It is easy to mix and the variation width becomes large. Even if the variation width can be set within the design dimension range, it is very difficult to further reduce the variation width and stabilize the gas adsorption performance. In addition, there is a great difficulty in restricting the communication area due to cracks to a certain value or less, reducing the gas adsorption speed, and maintaining the gas adsorption capacity for a longer time.

However, according to this aspect, the gas adsorbing material adsorbs gas through the porous member while exhibiting the effect described in the first aspect. Thus, by regulating the pore diameter and porosity of the porous member, the gas adsorption rate can be made substantially constant with little variation. In addition, it is possible to achieve both a further stabilization of the gas adsorption performance and a long gas adsorption capacity duration.

The third aspect of the present disclosure is a configuration in which, in the second aspect, the intersecting surface portion of the porous member is thermally welded to the inner surface of the sachet.

Thereby, since the entire surface of the intersecting surface portion of the porous member and the inner surface of the wrapping bag are physically integrated, the gas flowing in from the holes drilled in the intersecting surface portion of the porous member, It can be reliably adsorbed by the gas adsorbent through the porous member. Therefore, the effect of the second aspect can be made more reliable.

According to a fourth aspect, in any one of the first to third aspects, the wrapping bag is composed of a plurality of laminated films including a gas barrier layer made of a metal foil. Of these, the innermost film member and the porous member are heat-welded.

This ensures that the inner surface of the sachet and the porous member are securely bonded together without any gaps due to the compatibility of the resins. Moreover, when sealing the wrapping bag, it is possible to bond the wrapping bag inner surface and the porous member surface at the same time as the sealing sealing of the wrapping bag, to improve productivity while improving performance stability. Can do.

The fifth aspect is a structure in which the porous member is formed by sintering resin powder in any of the first aspect to the third aspect.

This prevents the porous member from cracking due to an external force at the time of drilling, and prevents the gas from leaking and adsorbing to the gas adsorbent through the cracked portion. Therefore, the gas adsorbent always adsorbs gas through the pores of the porous member, and can promote stabilization of gas adsorption performance.

In a sixth aspect, according to any one of the first to fifth aspects, the porous member has a porous structure that allows gas to pass therethrough but cannot pass the powder particles of the gas adsorbent. Yes.

As a result, when the inside of the sachet is sealed under reduced pressure, the gas adsorbent in the sachet can be reliably prevented from passing through the porous member and discharged from the inside of the sachet, and the effect of the first aspect It is possible to more reliably prevent the gas adsorbent from being evacuated from the wrapping bag at the time of vacuum sealing.

In the seventh aspect, in any of the first to sixth aspects, the gas adsorbent is a copper ion exchanged ZSM-5 type zeolite.

Thus, taking advantage of the characteristics of the copper ion exchanged ZSM-5 type zeolite, which has a larger gas adsorption capacity than existing gas adsorption devices, it is possible to exhibit good gas adsorption performance over a long period of time.

8th aspect WHEREIN: The laminate film which forms a sachet in a 4th aspect further has the protective layer which covers the surface of a gas barrier layer.

This protects the metal foil serving as the gas barrier layer with a protective layer, so that when the packaging film is subjected to unnecessary external force, the metal foil can be prevented from being inadvertently damaged during storage. Prevention of deterioration of the gas adsorbent can be ensured.

In the ninth aspect, in the eighth aspect, the protective layer is made of PET (polyethylene terephthalate) or a resin having a water absorption equal to or lower than that of PET.

As a result, when the gas adsorption device is stored, when the protective layer absorbs moisture in the atmosphere and is applied to the vacuum heat insulating material or the like, the water is released in the outer covering material such as the vacuum heat insulating material or the like, It is possible to prevent the degree of vacuum from being lowered and the gas adsorption capacity of the gas adsorbent from being consumed by this moisture absorption. Therefore, gas adsorption performance can be maintained over a longer period, and heat insulation properties such as a vacuum heat insulating material to which the gas adsorption device is applied can be kept good.

In the tenth aspect, in any one of the first to ninth aspects, a moisture adsorbing material is interposed between the gas adsorbing material and the porous member.

Thereby, the gas from the porous member passes through the moisture adsorbing material and is adsorbed by the gas adsorbing material, and the moisture contained in the gas can be adsorbed and removed. Therefore, waste due to moisture adsorption of the gas adsorbent can be prevented, good gas adsorption performance can be ensured over a longer period, and reliability can be improved.

An eleventh aspect is a vacuum heat insulating material, and includes the gas adsorption device according to any one of the first aspect to the tenth aspect, a core material, and a jacket material. The material is inserted into the jacket material and sealed under reduced pressure.

As a result, even a thin vacuum heat insulating material of several millimeters thickness and a vacuum heat insulating material to be bent, etc., realize a vacuum heat insulating material having a good heat insulating property over a long period of time by providing a gas adsorption effect. can do.

The twelfth aspect is the structure according to the eleventh aspect, wherein the gas adsorbing device communicates with the inside of the jacket material and the gas adsorbing device by perforating the porous member.

As a result, the gas in the vacuum heat insulating material passes through the porous member and is adsorbed by the gas adsorbing material. Therefore, the gas adsorbing speed of the gas adsorbing material can be arbitrarily determined by the pore diameter and the porosity of the porous member. It is possible to control the setting. Therefore, while obtaining the effects of the first aspect, the gas adsorption performance is stabilized without variation, and the gas adsorption speed is slowed down to maintain the gas adsorption capacity, thereby exhibiting good heat insulation performance for a longer period of time. A vacuum heat insulating material can be realized.

In a thirteenth aspect, in the eleventh aspect or the twelfth aspect, the gas adsorbing device has an opening member having protrusions on the facing portion of the crossing surface portion of the porous member of the envelope.

As a result, when the gas adsorption device is vacuum-sealed in the envelope of the vacuum heat insulating material, the wrapping bag is perforated by the protrusions of the opening member, and the internal gas adsorbent and the vacuum region in the envelope are separated. Can communicate. Therefore, it is possible to prevent the gas adsorbing material from adsorbing and deteriorating the outside air in the atmosphere at the time of perforating the sachet, and to maintain and guarantee the heat insulating property of the vacuum heat insulating material for a longer period. .

The technical teaching of each aspect described below may be independent from the technical teaching of each aspect from the first aspect to the thirteenth aspect described above.

The fourteenth aspect of the present disclosure is a gas adsorbing device opening member. This unsealing member for a gas adsorbing device is provided with a grip portion for sandwiching the gas adsorbing device on one end side of a spring made of a wire. And the front-end | tip of the other end side is comprised as a perforation part which opens a hole in a gas adsorption device.

With such a configuration, the unsealing member perforates the adsorbent storage container of the gas adsorbing device with the tip of the spring wire as the perforated portion. Thereby, the diameter of the hole becomes the wire diameter of the spring wire, and becomes a constant size even if the perforation depth varies depending on how the external force is applied. Therefore, the gas around the adsorbent storage container can be stably adsorbed without variation in adsorption speed. Moreover, since it can be formed simply by bending the spring wire, the material cost can be significantly reduced compared to the leaf spring, and the number of processing steps can be limited to bending the spring wire, resulting in a significant cost reduction. Can be provided at low cost.

In the fifteenth aspect of the present disclosure, in the fourteenth aspect, the spring made of the wire is coiled. The grip part which pinches | interposes a gas adsorption | suction device is comprised by making the coil winding density of the one end part side denser than the coil winding density of the other end side. Moreover, the perforation part which makes the front-end | tip part of the other end side where the coil density is coarse bent to the holding | grip part side, and opens a hole in a gas adsorption device is comprised.

Thereby, since the coil winding density is dense in the grip portion, the gas adsorption device can be securely gripped. Moreover, since the perforation part can perforate the gas adsorption device of the part hold | maintained by the holding part by pushing in to the holding part side, reliable perforation is realizable.

In addition, in a sixteenth aspect of the present disclosure, in the fourteenth aspect or the fifteenth aspect, the gripping portion is configured by bringing the coil windings into close contact with each other at least one turn.

Thereby, since the spring wire is in the tightly wound state in the gripping part, the gas adsorbing device can be gripped strongly by the tightly wound part. Accordingly, misalignment of the opening member and perforation errors due to dropping off are suppressed, and more reliable perforation can be realized.

According to a seventeenth aspect of the present disclosure, in the fourteenth aspect to the sixteenth aspect, the perforated portion bends the distal end portion of the wire rod bent from the coil-shaped portion toward the coil central portion toward the gripping portion. Is made up of.

Thereby, the perforation part perforates the coil center of the coil-shaped part, that is, the vicinity of the coil center of the grip part for gripping the gas adsorption device. Therefore, it is possible to prevent a perforation error such as perforating around the edge of the outer periphery of the gas adsorbing device where there is no gas adsorbing material and to enable reliable perforation.

In an eighteenth aspect according to any one of the fourteenth aspect to the seventeenth aspect, the cross section of the wire rod is a circle or an ellipse, and the outer peripheral surface thereof is an arc.

As a result, the outer peripheral surface of the spring wire becomes an arc shape even when the envelope of the vacuum heat insulator is strongly pressed against the spring wire of the opening member by atmospheric pressure in a state where it is used for the vacuum heat insulator. Therefore, stress concentration due to the corners of the leaf spring does not occur unlike the case where a leaf spring is used as the jacket material. Therefore, the envelope material can be prevented from being broken, and the vacuum of the vacuum heat insulating material can be securely held, thereby improving the reliability.

The nineteenth aspect is a gas adsorption device. This gas adsorption device includes a flat adsorbent storage container in which a gas adsorbent is sealed under reduced pressure, and the opening member described in any of the fourteenth to eighteenth aspects. Yes. Then, the unsealing member is attached to the adsorbent storage container by sandwiching the adsorbent storage container with the grip portion. And it is the structure which can pierce an adsorbent storage container by a perforation part being pushed in to the adsorbent storage container side.

Thus, the gas adsorbing device is capable of stably adsorbing the gas around the adsorbent storage container because the adsorbent storage container is perforated with little variation. Furthermore, the opening member can be provided at a low cost as much as the cost is reduced.

Further, the twentieth aspect is the nineteenth aspect, wherein the adsorbent storage container is composed of a laminated film bag having gas barrier properties, the opening of the bag is sealed, and the gas adsorbent is sealed under reduced pressure, And the opening part of a bag is the structure made into the thin part only of a laminate film layer.

Thereby, the opening member can be easily inserted into the adsorbent storage container of the gas adsorbing device and held from the thin-walled portion of the laminate film layer, thereby improving the work efficiency. Can do.

In a twenty-first aspect, in the nineteenth aspect or the twentieth aspect, the adsorbent storage container is sealed under reduced pressure by inserting a porous member that allows gas to pass but does not allow the powder particles of the gas adsorbent to pass through, and The gas adsorbent and the porous member are adjacent to each other in a planar state.

Thus, the gas adsorbing device is manufactured by being sealed and welded after being depressurized using a general evacuation apparatus. In this case, that is, an adsorbent storage container into which the gas adsorbent is inserted. When the bag is sealed under reduced pressure, by sucking and reducing the pressure in the bag from the porous member side toward the gas adsorbing material side, the gas adsorbing material in the bag is removed from the bag by the presence of the porous member. Suction exhaust can be prevented. Therefore, it can be manufactured by preventing unnecessary suction and exhaust of the gas adsorbent without using a special device, and can be sealed under reduced pressure without slowing down the vacuuming speed, improving productivity and being inexpensive. Can be provided.

Moreover, since the gas adsorbent and the porous member are arranged adjacent to each other in a flat state in the flexible adsorbent storage container, compared with the case where the gas adsorbent and the porous member are arranged in a superposed manner. The thickness can be reduced, and deformation such as bending can be easily performed. Therefore, the present invention can also be applied to a thin vacuum heat insulating material of about several millimeters and a vacuum heat insulating material that is used while being curved in an arc shape. Moreover, by increasing the plane width dimension of the adsorbent storage container, the amount of the gas adsorbent can be increased while keeping the thickness thin, and the gas adsorption capacity can be maintained over a long period of time. can do.

The twenty-second aspect is the structure according to the twenty-first aspect, wherein the opening member is mounted so as to perforate the porous member portion of the adsorbent storage container.

This causes the gas adsorption device to adsorb the surrounding gas through the porous member. Therefore, the gas adsorption speed of the gas adsorbent can be arbitrarily set and controlled by the pore diameter of the porous member. While obtaining the productivity improvement effect and the like of the above-mentioned twenty-first aspect, the gas adsorption performance is further stabilized without variation, and the gas adsorption speed is maintained by slowing the gas adsorption speed, which is good for a longer period of time. It is possible to realize a gas adsorption device capable of exhibiting excellent gas adsorption performance.

The twenty-third aspect is configured such that, in the twenty-second aspect, a moisture adsorbent is interposed between the gas adsorbent and the porous member.

Thereby, even if moisture is contained in the gas adsorbed from the periphery of the gas adsorption device, this moisture can be adsorbed and removed by the moisture adsorbent. Therefore, waste due to moisture adsorption of the gas adsorbent can be prevented, good gas adsorption performance can be ensured over a longer period, and a highly reliable gas adsorption device can be obtained.

According to a twenty-fourth aspect, in any one of the twenty-first to twenty-third aspects, the bag constituting the adsorbent storage container is composed of a multi-layer laminate film including a gas barrier layer made of metal foil. The innermost film member and the porous member are resin materials that can be thermally welded to each other, and are heat-welded.

This ensures that the inner surface of the bag constituting the adsorbent storage container and the porous member are securely bonded to each other without any gaps due to the compatibility of the resins. Therefore, the adsorbed gas does not leak through the gap between the laminate film forming the bag and the porous member, and the performance stability can be improved. In addition, when the bag is sealed, the bag inner surface and the porous member surface can be bonded simultaneously with the bag sealing and sealing, and productivity can be improved.

The 25th aspect is a vacuum heat insulating material. This vacuum heat insulating material is constructed by inserting the gas adsorbing device described in any one of the nineteenth aspect to the twenty-fourth aspect into a jacket material together with a core material, and sealing under reduced pressure. Yes.

Thereby, good vacuum insulation performance is stably exhibited over a long period of time by the stable and reliable gas adsorption action of the gas adsorption device. Moreover, as described above, the opening member can be provided at a low cost by the cost reduction.

The twenty-sixth aspect is an apparatus using the vacuum heat insulating material described in the twenty-fifth aspect.

As a result, it is possible to realize a device having good heat insulation performance by the vacuum heat insulating effect of the vacuum heat insulating material that is stably exhibited over a long period of time, and to provide the device at a low cost by the cost of the opening member. be able to.

FIG. 1 is a diagram illustrating a cross-sectional configuration of a vacuum heat insulating material using the gas adsorption device according to the first embodiment of the present disclosure. FIG. 2 is a schematic diagram illustrating a configuration viewed from the side of the gas adsorption device according to the first embodiment of the present disclosure. FIG. 3 is a plan view of the gas adsorption device according to the first embodiment of the present disclosure. FIG. 4 is an enlarged view of a main part schematically illustrating the configuration of the gas adsorption device according to the first embodiment of the present disclosure. FIG. 5 is an enlarged cross-sectional view illustrating a film configuration of the envelope of the gas adsorption device according to the first embodiment of the present disclosure. FIG. 6 is a diagram schematically illustrating a state in which an opening member is set in the gas adsorption device according to the first embodiment of the present disclosure. FIG. 7 is a schematic diagram for explaining a manufacturing method of a vacuum heat insulating material in which the gas adsorption device according to the first embodiment of the present disclosure is hermetically sealed in a jacket material. FIG. 8 is a side view schematically showing the configuration of the gas adsorption device according to the second embodiment of the present disclosure. FIG. 9 is a side view illustrating the configuration of the gas adsorption device according to the third embodiment of the present disclosure. FIG. 10 is a cross-sectional view showing a configuration of a gas adsorbing device opening member and a vacuum heat insulating material with a gas adsorbing device using the same according to the fourth embodiment of the present disclosure. FIG. 11 is a schematic diagram of a configuration viewed from the side showing a state where the gas adsorbing device opening member and the gas adsorbing device are set in the fourth embodiment of the present disclosure. FIG. 12 is an enlarged cross-sectional view schematically showing the film configuration of the storage container of the gas adsorption device according to the fourth embodiment of the present disclosure. FIG. 13 is a schematic diagram illustrating an enlarged cross-sectional configuration illustrating a state where the gas adsorbing device opening member and the gas adsorbing device are set according to the fourth embodiment of the present disclosure. FIG. 14 is a plan view illustrating a state in which the gas adsorbing device opening member and the gas adsorbing device are set according to the fourth embodiment of the present disclosure. FIG. 15 is a perspective view illustrating a state in which the gas adsorbing device opening member and the gas adsorbing device are set according to the fourth embodiment of the present disclosure. FIG. 16 is a perspective view illustrating an appearance of a gas adsorbing device opening member according to the fourth embodiment of the present disclosure. FIG. 17 is a schematic diagram for explaining a manufacturing method of a vacuum heat insulating material in which a gas adsorption device according to the fourth embodiment of the present disclosure is hermetically sealed in a jacket material. FIG. 18 is a plan view illustrating a state in which the gas adsorbing device opening member and the gas adsorbing device are set according to the fifth embodiment of the present disclosure. FIG. 19 is a schematic diagram illustrating an enlarged cross-sectional configuration illustrating a state where the gas adsorbing device opening member and the gas adsorbing device are set according to the fifth embodiment of the present disclosure. FIG. 20 is a schematic diagram illustrating an enlarged cross-sectional configuration illustrating a state where the gas adsorbing device opening member and the gas adsorbing device are set according to the sixth embodiment of the present disclosure. FIG. 21 is a diagram showing a configuration of a conventional gas adsorption device described in Patent Document 1. As shown in FIG.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that the present disclosure is not limited by the embodiment.

(First embodiment)
First, the first embodiment of the present disclosure will be described.

FIG. 1 is a diagram illustrating a cross-sectional configuration of a vacuum heat insulating material using a gas adsorption device according to a first embodiment of the present disclosure, and FIG. 2 is a schematic diagram illustrating a configuration viewed from the side of the gas adsorption device. FIG. 3 is a plan view of the gas adsorption device, FIG. 4 is an enlarged view of a main part schematically showing the configuration of the gas adsorption device, and FIG. 5 is a package of the gas adsorption device. It is an expanded sectional view which shows the film structure of a bag. FIG. 6 is a diagram schematically illustrating a state in which an unsealing member is set on the gas adsorption device according to the first embodiment of the present disclosure, and FIG. 7 is a diagram illustrating the sealing of the gas adsorption device in a jacket material. It is a schematic diagram for demonstrating the manufacturing method of the sealed vacuum heat insulating material. FIG. 6 shows a configuration viewed from the direction of the arrow line 6-6 in FIG.

As shown in FIG. 1, the vacuum heat insulating material 1 according to the present embodiment has a gas adsorbing device 4 and a core material 3 installed inside a jacket material 2, and then sealed under reduced pressure. And the inside of the jacket material 2 are communicated. In addition, although not shown in figure, the structure by which the water | moisture-content adsorption agent was installed in the jacket material 2 with the core material 3 and the gas adsorption device 4 may be sufficient. The moisture adsorbent adsorbs moisture (water vapor) that remains or enters the vacuum heat insulating material. The moisture adsorbent is not particularly limited, and a chemical adsorbent such as calcium oxide or magnesium oxide, a physical adsorbent such as zeolite, or a mixture thereof can be used.

As shown in FIG. 2, the gas adsorbing device 4 is configured by inserting a porous member 7 together with a gas adsorbing material 6 into a flexible wrapping bag 5 having a gas barrier property, and sealing under reduced pressure. . And the gas adsorption material 6 and the porous member 7 are comprised so that it may become adjacent arrangement | positioning in the planar state.

Note that the gas adsorbent 6 and the porous member 7 are arranged in different portions in the longitudinal direction of the gas adsorption device 4.

Further, as shown in FIGS. 2 and 3, the gas adsorbing device 4 has an opening member 9 having a protrusion 8 (see FIG. 6) at a portion facing the intersecting surface portion 7 a of the porous member of the envelope 5. It has.

Here, the envelope 5 of the gas adsorption device 4 is a film having a high gas barrier property, for example, as shown in FIG. 5, at least an outermost layer includes a protective layer 10a, an intermediate gas barrier layer 10b, and an innermost layer an adhesive layer 10c. It is configured by thermally welding at least three layers of laminated film (film 10) in a bag shape.

In the present embodiment, as shown in FIG. 3, the bag 5 is formed in a bag shape by thermally welding (thin gray portions) around the two laminated films. However, the wrapping bag 5 of the present disclosure is not limited to this configuration, and may take any form, for example, a single laminated film is formed into a bag shape.

On the other hand, the adhesive layer 10c composed of the innermost film member of the film 10 is to firmly bond the outer peripheral portions of the films 10 by thermal welding, and a resin that can be thermally welded is used. Yes. For example, linear low density polyethylene (LLDPE), low density polyethylene (LDPE), high density polyethylene (HDPE), metallocene polyethylene, ethylene-acrylic acid copolymer (EAA), or ethylene-methacrylic acid copolymer (EMAA) ) Is used. Resin films such as unstretched polypropylene (CPP), biaxially stretched polypropylene (OPP), polyethylene terephthalate (PET), ethylene / vinyl acetate copolymer (EVA), or ionomer are also used.

The gas barrier layer 10b, which is an intermediate layer of the film 10, is made of a metal foil such as an aluminum foil (Al foil), a copper foil (Cu foil), or a stainless steel foil that does not transmit gas. In some cases, a film in which a metal such as Al or Cu is deposited on a resin film such as an ethylene-vinyl alcohol copolymer resin film (EVOH film) or a polyethylene terephthalate film (PET film) having low gas permeability ( Metal vapor deposition film), or a film on which metal oxide such as silica or alumina, diamond-like carbon (DLC), or the like is vapor-deposited may be used.

Further, the protective layer 10a which is the outermost layer of the film 10 protects the gas barrier layer 10b, such as nylon film, polyethylene terephthalate film (PET film), polyethylene film (PE film), or polypropylene film (PP film). Is used. Among these, a film having a low water absorption rate, for example, a PET film, a PE film, or a PP film is preferable, and any resin having a water absorption rate equal to or lower than that of PET can be used. However, it is not particularly limited to the above-described example.

Although not shown, it is effective to use a nylon film between the gas barrier layer 10b and the adhesive layer 10c as the film 10 constituting the sachet 5 because the strength of the entire film 10 can be increased. That is, when, for example, a copper ion exchange ZSM-5 type zeolite is used as the gas adsorbent 6, if there is a large particle size in the zeolite particles, the portion of the film 10 facing the particles is large. A tensile force is applied, and cracks and pinholes may occur in the aluminum foil constituting the gas barrier layer 10b starting from large particles. However, the use of a nylon film for the film 10 is effective because cracks and pinholes originating from large particles can be suppressed.

In addition, the porous member 7 enclosed with the gas adsorbing material 6 in the sachet 5 has a structure in which resin powder is sintered to have a three-dimensional network hole, and the powder particles of the gas adsorbing material 6 are not allowed to pass through. It has a porous structure that allows gas to pass through.

The inner surface of the sachet 5 is bonded to the porous member 7 by atmospheric pressure by evacuation in the manufacturing process of the gas adsorption device. In the present embodiment, the resin constituting the porous member 7 is a thermoplastic resin that is compatible with the adhesive layer 10c that is the innermost layer of the sachet 5, for example, a linear low-density polyethylene (as described above) LLDPE) or the like, and the intersecting surface portion 7a is physically integrated with the adhesive layer 10c constituting the innermost layer of the bag 5 by thermal welding.

On the other hand, as the gas adsorbing material 6, it is possible to apply a chemical adsorption material such as calcium oxide or magnesium oxide, a physical adsorption material such as zeolite, a mixture thereof, or a gas adsorption alloy such as BaLi4. . In the present embodiment, a copper ion exchanged ZSM-5 type zeolite having a particularly high gas adsorption capacity and adsorption capacity is used. In addition, as adsorbents having high gas adsorption capacity, ZSM-5 type zeolite containing barium (Ba) or strontium (Sr), and ZSM-5 type zeolite are MOM species (M: Ba or There are adsorbents containing Sr, O: oxygen), and these may be used, or these may be used in combination.

Further, the opening member 9 is made of an appropriate synthetic resin or metal having strength and elasticity. In the case of a resin, it is sufficient that the gas generation is small and the hardness of the protrusion 8 can be ensured, and polypropylene, polybutylene terephthalate, polystyrene, polyamide, polycarbonate, polyoxymethylene, AS resin, and ABS resin or the like is a candidate.

As shown in FIGS. 3 and 6, the unsealing member 9 is mounted such that the protrusion 8 faces the intersecting surface portion 7 a of the porous member 7. When the gas adsorbing device 4 is sealed under reduced pressure in the jacket material 2 of the vacuum heat insulating material 1, it is pushed into the porous member 7 side of the gas adsorbing device 4 by atmospheric pressure. And the wrapping bag 5 is pierced, and the gas adsorbent 6 inside communicates with the inside of the jacket material 2 of the vacuum heat insulating material 1.

Next, the operation and action of the gas adsorption device 4 and the vacuum heat insulating material 1 using the gas adsorption device 4 configured as described above will be described.

In the gas adsorption device 4, a gas adsorbent 6 is sealed under reduced pressure in a sachet 5 having gas barrier properties. The wrapping bag 5 is flexible, and the gas adsorbing material 6 and the porous member 7 are adjacently disposed inside the wrapping bag 5 in a planar state. Thereby, it can manufacture by heat-welding, after reducing pressure using a general vacuum drawing apparatus. The thermally welded portion is the portion shown in dark gray in FIG.

Here, when the inside of the bag 5 into which the gas adsorbing material 6 is inserted is sealed under reduced pressure, the inside of the bag 5 is sucked and decompressed from the porous member 7 side toward the gas adsorbing material 6 side. The gas adsorbent 6 in 5 can be prevented from being exhausted from the bag 5 due to the presence of the porous member 7. That is, it is possible to prevent the gas adsorbent 6 in the wrapping bag 5 from being exhausted from the wrapping bag 5 by sucking and evacuating from the heat-welded sealed portion side shown in dark gray in FIG.

Therefore, the gas adsorption device 4 of the present embodiment can be manufactured without using a special apparatus as described in the background art section, and can be sealed under reduced pressure without slowing the vacuuming speed, thereby improving productivity. Can be provided inexpensively.

Further, the gas adsorbing material 6 and the porous member 7 are arranged adjacent to each other in a flat state in the flexible bag 5. Since the sachet 5 is made of a flexible film, the thickness can be reduced and deformation such as bending can be easily performed as compared with the case where the gas adsorbent 6 and the porous member 7 are arranged in a superposed manner. Things can be realized. Therefore, the present invention can be applied to a thin vacuum heat insulating material of about several millimeters, a vacuum heat insulating material used by being bent in an arc shape, and the like.

Note that the gas adsorbent 6 and the porous member 7 are arranged at different portions in the arrangement of the gas adsorption device 4 in the longitudinal direction.

Thereby, for example, when the powdery gas adsorbing material 6 is used, the flexibility of the gas adsorbing device 4 can be obtained regardless of whether the porous member 7 is flexible.

Moreover, when the porous member 7 is made 1/2 or less of the total length in the longitudinal direction of the gas adsorption device 4, the gas adsorption speed can be slowed down and the gas adsorption ability can be maintained for a longer period. Since it becomes possible, it is preferable. Further, when the porous member 7 is set to ¼ or less of the total length in the longitudinal direction of the gas adsorption device 4, even if the flexibility of the porous member 7 is poor, the gas adsorption device 4 as a whole is flexible. It is preferable because it can be imparted.

Furthermore, by increasing the plane width dimension of the sachet 5, the amount of the gas adsorbing material 6 can be increased while keeping the thickness thin, and the gas adsorbing ability can be maintained over a long period of time. it can. Here, the planar width dimension means, for example, when the packaging bag 5 is a quadrangle or a polygon in plan view, it means at least the dimension of one side or the dimension of the opposite sides, and in the case of an ellipse, the long side Refers to the dimensions of the part, and in the case of a circle, it refers to dimensions such as its diameter.

Further, in the gas adsorption device 4 of the present embodiment, the intersecting surface portion 7 a of the porous member 7 that intersects the surface adjacent to the gas adsorbent 6 is bonded to the inner surface of the wrapping bag 5. Thus, when the inside of the vacuum heat insulating material 1 and the inside of the gas adsorbing device 4 are communicated with each other, the bag 5 is perforated at the intersecting surface portion 7a of the porous member 7, so that the gas from the outside of the bag 5 is porous. The gas adsorbent 6 is adsorbed through the material member 7. Thereby, the gas adsorption speed of the gas adsorbent 6 can be arbitrarily set and controlled by the pore diameter and the porosity of the porous member 7.

Therefore, the variation range of the gas adsorption performance can be reduced, the adsorption performance can be stabilized, and the gas adsorption speed can be slowed to maintain the gas adsorption capacity for a longer period.

That is, as in the conventional gas adsorption device, in the configuration in which the glass sealing material is crushed and communicated, the communication area caused by the crack formed by the crushing is a matter of course, and the gas adsorption speed is fast, And slow things are mixed, and the variation width tends to be large. Although this variation width is set to be within the design dimension range, it is difficult to further reduce the variation to stabilize the gas adsorption performance. In addition, it is extremely difficult to control the communication area due to cracking to a certain value or less to reduce the gas adsorption speed and to maintain the gas adsorption capacity for a longer time.

However, according to the gas adsorbing device 4 of the present embodiment, the gas adsorbing material 6 comes to adsorb gas through the porous member 7, so that the pore diameter and porosity of the porous member 7 are regulated. Thus, the gas adsorption rate can be made substantially constant with little variation. Therefore, it is possible to achieve both a further stabilization of the gas adsorption performance and a longer gas adsorption capacity duration.

Moreover, since the gas adsorption device 4 of this Embodiment has adhere | attached the inner surface of the bag 5 and the cross surface part 7a of the porous member 7, the gas from the hole opened to the cross surface part 7a by perforation | boring Is adsorbed by the gas adsorbent 6 through the porous member 7. Therefore, as described above, stabilization of gas adsorption performance and adsorption rate control by the porous member 7 can be realized with high accuracy.

In the present embodiment, the film member of the adhesive layer 10c that is the innermost layer of the sachet 5 and the porous member 7 are made of a heat-weldable resin material and are heat-welded. Therefore, the intersecting surface portion 7a of the porous member 7 is melted and physically integrated with the inner surface of the sachet 5 as shown by the broken line in FIG. Therefore, a partial minute gap remains between the inner surface of the sachet 5 and the intersecting surface portion 7 a of the porous member 7, and gas can be prevented from being adsorbed to the gas adsorbent 6 from this portion. That is, according to the present embodiment, the gas from the hole formed in the intersecting surface portion 7 a by the perforation is always adsorbed by the gas adsorbent 6 through the porous member 7. Thereby, stabilization of the gas adsorption | suction performance by the porous member 7 mentioned above and adsorption | suction speed control are realizable accurately.

Furthermore, the above-mentioned adhesion between the inner surface of the wrapping bag 5 and the intersecting surface portion 7a of the porous member 7 can be performed simultaneously with the thermal welding performed when the wrapping bag 5 is sealed. In addition, since the thermoplastic resin material is used, the entire surface can be reliably bonded by the compatibility of the resins, and the performance stability and the accuracy of the adsorption speed control can be improved while improving the productivity.

Further, since the porous member 7 is formed by sintering resin powder, the porous member 7 is not cracked by an external force at the time of drilling, and gas is adsorbed through the crack. 6 can be prevented from leaking and adsorbing. Therefore, the gas adsorbent 6 always adsorbs gas through the pores of the porous member 7 and can promote stabilization of gas adsorption performance.

In addition, the porous member 7 has a three-dimensional network hole, and has a porous structure that allows gas to pass but does not pass the powder particles of the gas adsorbent 6. Thereby, when the inside of the sachet 5 is sealed under reduced pressure, the gas adsorbent 6 in the sachet 5 can be reliably prevented from passing through the porous member 7 and exhausted from the sachet 5, and the reduced pressure seal It is possible to more reliably prevent the gas adsorbent 6 from being exhausted from the bag 5 at the time.

On the other hand, the gas adsorbing device 4 is held in a vacuum sealed state by the wrapping bag 5 without being pierced by the opening member 9 during storage. For this reason, the gas adsorbent 6 does not come into contact with external air, and the adsorption capacity of the gas adsorbent 6 is maintained.

The film 10 constituting the sachet 5 includes a gas barrier layer 10b made of a metal foil that does not allow gas to pass therethrough. Therefore, it can suppress strongly that external air osmose | permeates in the bag 5 and the gas adsorbent 6 deteriorates with time. Therefore, the adsorption capacity of the gas adsorbent 6 can be maintained high, and a good gas adsorption capacity can be exhibited over a long period of time.

Further, since the gas barrier property of the sachet 5 is high, even if an adsorbent having a high gas adsorbing capacity such as a copper ion exchange ZSM-5 type zeolite is used as the gas adsorbing material 6, the adsorbing capacity can be reliably maintained. In combination with the use of a gas adsorbent having a high adsorption capacity, a better gas adsorption capacity can be exhibited over a long period of time.

Furthermore, the film 10 forming the sachet 5 has a configuration having a protective layer 10a covering the surface of the gas barrier layer 10b. Therefore, the metal foil which becomes the gas barrier layer 10b is protected by the protective layer 10a, and when the film 10 of the wrapping bag 5 receives unnecessary external force, the metal foil can be prevented from being carelessly damaged and stored. It is possible to reliably prevent deterioration of the gas adsorbent 6 at the time.

The protective layer 10a of the sachet 5 is made of PET (polyethylene terephthalate) or a resin having a water absorption equal to or lower than that of PET. Therefore, when the gas adsorption device is stored, the protective layer 10a absorbs moisture in the atmosphere. Therefore, when the protective layer 10a is applied to the vacuum heat insulating material 1, the water is released in the outer covering material 2 of the vacuum heat insulating material 1 and the outer cover. It is possible to prevent the degree of vacuum in the material 2 from being lowered or to prevent the gas adsorbing capacity of the gas adsorbing material 6 from being consumed by moisture absorption. Therefore, gas adsorption performance is maintained over a longer period, and the heat insulation of the vacuum heat insulating material 1 to which the gas adsorption device is applied can be kept good.

The protective layer 10a is more preferably a PET or a resin having a water absorption comparable to or lower than that of PET, but is not particularly limited to these examples.

As described above, the gas adsorbing device 4 described above is inserted into the bag-shaped outer covering material 2 together with the core material 3, and after being evacuated to vacuum, the bag opening of the outer covering material 2 is heat-sealed and sealed. It is used as an adsorbent for the vacuum heat insulating material 1.

FIG. 7 is a schematic diagram for explaining a method of manufacturing the vacuum heat insulating material 1 described above.

The vacuum heat insulating material 1 is put in the decompression chamber 12 of the vacuum packaging device 11, and the inside of the decompression chamber 12 is evacuated by the vacuum pump 13. Thereby, the gas in the jacket material 2 is evacuated and depressurized, and the opening of the jacket material 2 is thermally welded and sealed by the heat sealer 14, whereby the vacuum heat insulating material 1 is manufactured.

At this time, the gas adsorbing device 4 has the protrusion 8 pierced into the film 10 when the opening member 9 is pushed in by atmospheric pressure, or when the opening member 9 is mechanically pushed after vacuum sealing. Is perforated.

Thereby, the inside of the gas adsorbing device 4 communicates with the inside of the jacket material 2 of the vacuum heat insulating material 1, and the gas adsorbing material 6 can adsorb the gas remaining in the jacket material 2. .

Further, the film perforation is performed while the outer cover material 2 of the vacuum heat insulating material 1 is being evacuated or after vacuum sealing. As a result, the gas adsorbent 6 is exposed to the air in the atmosphere when the film is perforated, as in the case where the film is perforated in the atmosphere and then evacuated and put into the jacket material, and the atmosphere is adsorbed and deteriorated. Can be prevented. Therefore, the gas adsorbing performance of the gas adsorbing material 6 can be maintained and guaranteed to be good for a longer period of time.

Further, the opening member 9 for punching the film 10 is formed of a metal or a resin with less gas generation. As a result, gas is released in the jacket material 2 of the vacuum heat insulating material 1 to reduce the degree of vacuum in the jacket material 2, or the gas adsorption capacity of the gas adsorbent 6 is the same as in the case of the film 10. It is possible to prevent the gas adsorption from being consumed. Therefore, it is effective because it can maintain good gas adsorption performance over a longer period of time and keep the heat insulating property of the vacuum heat insulating material 1 good.

Since the vacuum heat insulating material 1 formed in this way is a gas adsorbing device 4 that is thin and flexible, it may be a vacuum heat insulating material having a thickness of several millimeters or a vacuum heat insulating material that is curved. By enclosing and using the gas adsorbing device 4 together with the core material 3, a gas adsorbing effect can be provided, and a vacuum heat insulating material having good heat insulating properties can be realized over a long period of time.

In the gas adsorption device 4, the porous member 7 portion is perforated, and the inside of the jacket material 2 communicates with the inside of the gas adsorption device 4. Therefore, as already described, the gas in the vacuum heat insulating material 1 passes through the porous member 7 and is adsorbed by the gas adsorbing material 6, and the gas adsorbing speed of the gas adsorbing material 6 is changed to the porous member. 7 can be arbitrarily set and controlled by at least one of the hole diameter and the porosity. Therefore, it is possible to realize a vacuum heat insulating material that stabilizes gas adsorption performance and exhibits good heat insulating performance over a longer period of time.

The gas adsorbing device 4 has a configuration in which an opening member 9 having a protrusion 8 is provided at a portion facing the intersecting surface portion 7 a of the porous member 7 of the envelope 5. Therefore, when the gas adsorbing device 4 is vacuum-sealed in the jacket material 2 of the vacuum heat insulating material 1, the wrapping bag 5 is perforated by the protrusions 8 of the opening member 9, and the internal gas adsorbing material 6 is removed. It is possible to communicate with the vacuum region in the workpiece 2. Therefore, it is possible to prevent the gas adsorbing material 6 from deteriorating by adsorbing the outside air in the atmosphere at the time of perforating the sachet, and to maintain and guarantee the heat insulating property of the vacuum heat insulating material 1 for a longer period. Can do.

(Second Embodiment)
Next, a second embodiment of the present disclosure will be described.

FIG. 8 is a side view schematically showing the configuration of the gas adsorption device according to the second embodiment of the present disclosure.

The gas adsorption device 4 in the present embodiment has a configuration in which a moisture adsorbent 15 is interposed between the gas adsorbent 6 and the porous member 7.

According to this configuration, the gas from the porous member 7 passes through the moisture adsorbing material 15 and is adsorbed on the gas adsorbing material 6, so that moisture contained in the gas can be adsorbed and removed. Therefore, waste due to moisture adsorption of the gas adsorbent 6 can be prevented, good gas adsorption performance can be ensured over a longer period, and reliability can be improved.

Further, since waste of adsorption capacity due to moisture adsorption of the gas adsorbent 6 can be suppressed, it is not necessary to consider the consumption due to moisture adsorption of the copper ion exchange ZSM-5 type zeolite used as the gas adsorbent 6, and the copper ion exchange ZSM. The amount of −5 type zeolite applied can be reduced, and the gas adsorption device 4 can be downsized.

Furthermore, since the adhesive layer 10c of the film 10 constituting the sachet 5 is melted at a temperature much lower than the melting temperature of glass or the like, the heat welding temperature can be greatly reduced. Therefore, even if the moisture adsorbing material 15 is provided in the wrapping bag 5, the performance of the gas adsorbing material 6 can be prevented from being deteriorated by the gas generated from the moisture adsorbing material 15, and the moisture adsorbing material 15 is provided. In addition, a high-performance gas adsorption device 4 can be realized.

For example, the material used as the adhesive layer, such as PE, melts at 100 ° C. to 140 ° C., PP about 130 ° C., and EMAA or ethylene ionomer melts at about 100 ° C. When these are laminated films, they can be welded at about 160 ° C. to 190 ° C., depending on the laminated structure and thickness. Even if the moisture adsorbent 15 is provided in the wrapping bag 5, it is possible to prevent the performance of the gas adsorbent 6 from being deteriorated by degassing the moisture adsorbent 15, and the moisture adsorbent 15 is provided. A high-performance gas adsorption device 4 can be realized.

In addition, as the moisture adsorbing material 15, various materials such as calcium oxide (CaO), silica gel, zeolite, or molecular sieve can be used.

Other configurations and operational effects are the same as those of the first embodiment, and the same elements are denoted by the same reference numerals and description thereof is omitted.

(Third embodiment)
Next, a third embodiment will be described.

FIG. 9 is a side view schematically showing the configuration of the gas adsorption device according to the third embodiment of the present disclosure.

The gas adsorbing device 4 in the present embodiment is configured such that a plurality of combinations of the gas adsorbing material 6 and the porous member 7 are sealed in a single bag 5 under reduced pressure.

According to this configuration, by changing the pore diameter and porosity of each porous member 7, the gas adsorption rate can be changed, and both the immediate effect and the sustainability of the gas adsorption can be achieved. It is.

For example, if the pore diameter and porosity of each of the plurality of porous members 7 are made larger on one side and smaller on the other side, the porous member 7 having the larger pore diameter and porosity has a higher gas adsorption rate. Therefore, the gas in the vacuum heat insulating material is adsorbed in a short time, and at the time of producing the vacuum heat insulating material, it exhibits an immediate effect in the adsorption removal of the remaining gas that cannot be evacuated under reduced pressure. On the other hand, the porous member 7 having a small pore diameter and porosity has a low gas adsorption rate. Here, by passing through the jacket material over time, the adsorption rate of the gas adsorbent 6 is made slower than the adsorption rate of the moisture adsorbent installed separately from the gas adsorption device in the jacket material. Most of the moisture contained in the invading gas can be adsorbed and removed by the moisture adsorbent. For this reason, waste due to moisture adsorption of the gas adsorbing material 6 can be prevented, and the gas in the vacuum heat insulating material can be continuously adsorbed over a long period of time. Therefore, it is suitable for applying to a large-sized vacuum heat insulating material used for building materials or LNG ships.

Other operational effects are the same as those described in the first embodiment and the second embodiment, and thus description thereof is omitted.

The gas adsorption device and the vacuum heat insulating material using the gas adsorption device according to the present disclosure have been described above, but the present invention is not limited to these.

For example, in the embodiment, as the porous member 7, a material configured by sintering resin powder is exemplified, but the powder particles of the gas adsorbent 6 are not allowed to pass but have a function of allowing gas to pass. For example, a non-woven fabric or glass wool may be used. Also, the hole shape may be a group of linear through holes having a smaller diameter than the powder particles of the gas adsorbing material 6 instead of the three-dimensional network hole. In addition, when a nonwoven fabric or glass wool is used, since it is more flexible than a porous member, it becomes easier to deform | transform a vacuum heat insulating material into a curve etc.

Further, the form of the wrapping bag 5 is not limited to the three-sided bag exemplified in the embodiment, and may be any form such as a jointed bag, a two-sided bag, or a gusseted bag.

Furthermore, adhesion between the inner surface of the sachet 5 and the intersecting surface portion 7a of the porous member 7 may be performed using an adhesive instead of heat welding.

In other words, the embodiments disclosed herein are illustrative and non-restrictive in every respect, and the scope of the present invention is indicated by the claims rather than the above description. It is intended that all modifications within the meaning and scope equivalent to the terms of the claims are included.

(Fourth embodiment)
Next, a fourth embodiment of the present disclosure will be described. In the fourth to sixth embodiments of the present disclosure, an opening member for a gas adsorption device capable of performing drilling with low cost and less variation, and a gas adsorption device capable of obtaining stable gas adsorption performance, The vacuum heat insulating material using them, and an apparatus are provided.

FIG. 10: is sectional drawing which shows the structure of the vacuum heat insulating material with the opening member for gas adsorption devices in 4th Embodiment of this indication, and a gas adsorption device using the same, FIG. 11 is the gas adsorption device It is the schematic diagram of the structure seen from the side which shows the state by which the opening member for gas and the gas adsorption device were set. FIG. 12 is an enlarged cross-sectional view schematically showing the film configuration of the storage container of the gas adsorption device according to the fourth embodiment of the present disclosure, and FIG. 13 is an opening member for the gas adsorption device and the gas adsorption It is a schematic diagram which shows the expanded cross-sectional structure which shows the state in which the device was set.

FIG. 14 is a plan view showing a state in which the gas adsorbing device opening member and the gas adsorbing device are set according to the fourth embodiment of the present disclosure, and FIG. 15 is the gas adsorbing device opening member. It is a perspective view which shows the state by which the gas adsorption device was set. FIG. 16 is a perspective view showing an appearance of a gas adsorbing device opening member according to the fourth embodiment of the present disclosure, and FIG. 17 shows the gas adsorbing device sealed and sealed in a jacket material. It is a schematic diagram for demonstrating the manufacturing method of a vacuum heat insulating material.

First, as shown in FIG. 10, the vacuum heat insulating material 101 of the present embodiment is sealed under reduced pressure after the gas adsorbing device 104 is installed together with the core material 103 inside the outer cover material 102, and the gas adsorbing device The inside of 104 and the outer covering material 102 are communicated with each other.

Although not shown, a moisture adsorbent may be installed inside the jacket material 102 together with the core material 103 and the gas adsorption device 104. The moisture adsorbent adsorbs moisture (water vapor) that remains or enters the vacuum heat insulating material. The moisture adsorbent is not particularly limited, and a chemical adsorbent such as calcium oxide or magnesium oxide, a physical adsorbent such as zeolite, or a mixture thereof can be used.

As shown in FIG. 11, the gas adsorbing device 104 has a flat shape in which a gas adsorbing material 106 is inserted into an adsorbing material storage container 105 formed of a flexible laminate film having gas barrier properties, and is sealed under reduced pressure. Is formed.

Further, as shown in FIG. 11, the gas adsorbing device 4 includes an opening member 108 on the surface of the adsorbent storage container 105 where the gas adsorbent 106 is provided.

As shown in FIG. 16, the unsealing member 108 is configured by using a spring wire made of stainless steel or the like. The spring wire is coiled, and a grip portion 109 that sandwiches the gas adsorption device 104 is formed by making the coil winding density on one end side denser than the coil winding density on the other end side. In addition, a perforated portion 110 that opens a hole in the gas adsorbing device 104 is formed by bending a tip portion on the other end side where the coil density is coarse toward the grip portion 109 side.

The grip portion 109 is configured by bringing the coil windings into close contact with each other at least one turn. The perforated portion 110 is configured by further bending and cutting the tip portion bent from the coil-shaped portion toward the coil center portion toward the grip portion 109 side.

Further, the spring wire of the unsealing member 108 is made of a wire having a diameter of about 0.5 to 1.0 mm, for example, which can be easily perforated by the perforated part 110, and has a circular or oval cross section. The outer peripheral surface is configured to have an arc shape. When the wire diameter is small, the hole diameter due to perforation becomes small and the gas adsorption rate becomes slow, but the gas adsorption is faster than the adsorption rate of the moisture adsorbent installed separately from the gas adsorption device in the jacket material. By slowing down the adsorption speed of the material 106, most of the moisture contained in the gas that passes through the jacket material 102 and enters through the passage of time can be adsorbed and removed by the moisture adsorbent. Therefore, waste due to the adsorption of moisture by the gas adsorbing material 106 can be prevented, and the gas in the vacuum heat insulating material can be continuously adsorbed over a long period of time. Therefore, it is suitable for applying to a large-sized vacuum heat insulating material used for building materials and LNG ships.

As the spring wire material of the opening member 108, a metal material such as stainless steel is used. However, any material may be used as long as it generates little gas in a vacuum atmosphere. A resin material that can be used may be used.

On the other hand, the adsorbent storage container 105 of the gas adsorption device 104 is a film having a high gas barrier property, for example, as shown in FIG. 12, at least the outermost layer is a protective layer 112a, the middle is a gas barrier layer 112b, and the innermost layer is an adhesive layer 112c. The laminate film 112 having at least three layers is sealed and welded in a bag shape.

In the present embodiment, as shown in FIG. 14, the adsorbent storage container 105 has a bag shape in which the periphery of the two laminated films 112 is sealed and welded (light gray portions), and the opening portion (dark gray portion) ) Is a configuration in which the thin film portion 105a of only the laminate film layer is formed along with the periphery of the laminate film 112. This may have any form, for example, a single laminate film 112 is formed into a bag shape.

In addition, the adhesive layer 112c constituted by the innermost film member of the laminate film 112 firmly adheres the outer peripheral portions of the laminate films 112 to each other by seal welding. Examples of the adhesive layer 112c include heat-weldable resins such as linear low density polyethylene (LLDPE), low density polyethylene (LDPE), high density polyethylene (HDPE), metallocene polyethylene, and ethylene-acrylic acid copolymer (EAA). Or ethylene-methacrylic acid copolymer (EMAA). As the adhesive layer 112c, a resin film such as unstretched polypropylene (CPP), biaxially stretched polypropylene (OPP), polyethylene terephthalate (PET), ethylene / vinyl acetate copolymer (EVA), or ionomer is also used.

As the gas barrier layer 112b serving as an intermediate layer of the laminate film 112, a metal foil such as an aluminum foil (Al foil), a copper foil (Cu foil), or a stainless steel foil having no gas permeability is used. In some cases, the gas barrier layer 112b is formed of a resin film such as an ethylene-vinyl alcohol copolymer resin film (EVOH film) or a polyethylene terephthalate film (PET film) having a low gas permeability on a metal or metal oxide such as Al or Cu. You may comprise the film (metal vapor deposition film) which vapor-deposited the thing, or the film in which metal oxides, such as a silica and an alumina, or diamond-like carbon (DLC), etc. were vapor-deposited.

As the protective layer 112a which is the outermost layer of the laminate film 112, the gas barrier layer 112b is protected. As the protective layer 112a, a nylon film, a polyethylene terephthalate film (PET film), a polyethylene film (PE film), a polypropylene film (PP film), or the like is used. Among them, a film having a low water absorption rate, for example, a PET film, a PE film, or a PP film is preferable, but any resin having a water absorption rate equal to or lower than that of PET may be used. It is not limited to examples.

On the other hand, as the gas adsorbing material 106, a chemical adsorbing substance such as calcium oxide or magnesium oxide, a physical adsorbing substance such as zeolite, a mixture thereof, or a gas adsorbing alloy such as BaLi4 can be applied. In the present embodiment, a copper ion exchanged ZSM-5 type zeolite having a particularly high gas adsorption capacity and adsorption capacity is used. In addition, as an adsorbent having a high gas adsorption capacity, ZSM-5 type zeolite containing barium (Ba) or strontium (Sr), or ZSM-5 type zeolite is MOM type (M: Ba or There are adsorbents containing Sr, O: oxygen), and these may be used, or these may be used in combination.

The gas adsorbing device 104 is held in a vacuum sealed state by the adsorbent storage container 105 without being pierced by the opening member 108 during storage. Thereby, the gas adsorbent 106 does not come into contact with external air, and the adsorption capacity of the gas adsorbent 106 is maintained.

Next, the operation and action of the gas adsorbing device opening member, the gas adsorbing device 104 using the gas adsorbing device 104, and the vacuum heat insulating material 101 configured as described above will be described.

First, since the unsealing member 108 is formed using a spring wire, the material can be greatly reduced as compared with an unsealing member composed of a leaf spring. In addition, the grip portion 109 and the perforated portion 110 of the unsealing member 108 can be formed simply by bending the spring wire, and like a leaf spring type unsealing member, such as press cutting, several times of bending of the brace, and cutting and raising processing, etc. Many processes are unnecessary. Therefore, this material reduction and man-hour reduction can greatly reduce the cost and provide the gas adsorption device 104 at low cost.

Further, the unsealing member 108 is used in a state in which the gas adsorbing container is sandwiched by the grip portion 109 and attached to the gas adsorbing container. Since the outer peripheral edge of the bag serving as the adsorbent storage container 105 is a thin wall portion 105a, the opening member 108 is set by inserting the grip portion 109 from the thin wall portion 105a. Attachment to the storage container 105 can be easily performed.

And the holding part 109 of the unsealing member 108 is configured such that the spring wire is coiled, and the coil winding density on one end side is made denser than the coil winding density on the other end side. Therefore, the gas adsorbing device 104 can be elastically held between the spring wires, and the mounting can be ensured.

In particular, since the grip portion 109 is configured such that the coil windings are in close contact with each other at least one turn, it is strongly elastic due to the spring force, and can strongly grip the gas adsorption device 104. .

Accordingly, the possibility that the unsealing member 108 is displaced and dropped from the adsorbent storage container 105 is reduced, and is attached and fixed at a predetermined position. The adsorption device 104 can be realized.

Further, in this unsealing member 108, the end of the coiled spring wire opposite to the grip portion 109 is pushed in by applying an external force, so that the perforated portion 110 is stuck into the adsorbent storage container 105. Perforate. At this time, the perforated part 110 is configured using the tip of the spring wire as it is. Therefore, the hole opened in the adsorbent storage container 105 of the gas adsorbing device 104 has the same diameter throughout the entire length of the perforated part 110, so even if the perforation depth varies depending on how the external force is applied, it remains constant. It becomes the size of.

Therefore, the gas adsorption device 104 can stably adsorb the gas around the adsorbent storage container 105 without variation in adsorption speed, and the gas adsorption performance is stabilized and the reliability is improved.

Further, the perforated part 110 constitutes a perforated part 110 that opens a hole in the gas adsorbing device 104 by bending a tip part bent from the coil-shaped part toward the center of the coil toward the grip part 109. The perforation part 110 perforates the coil center of the coiled portion, that is, the vicinity of the coil center of the grip part 109 that grips the gas adsorption device 104. Therefore, it is possible to prevent a perforation mistake such as perforating around the edge of the outer periphery of the gas adsorbing device 104 where there is no gas adsorbent 106 and to realize reliable perforation.

Next, the operation and effect of the gas adsorption device 104 using the opening member 108 and the vacuum heat insulating material 101 using the gas adsorption device 104 will be described.

First, in the vacuum heat insulating material 101, after the gas adsorbing device 104 with the opening member 108 attached is inserted into the jacket material 102 and the inside is evacuated, the bag opening of the jacket material 102 is thermally welded. Sealed and manufactured.

FIG. 17 is a schematic diagram for explaining a method of manufacturing the vacuum heat insulating material 101 described above. The vacuum heat insulating material 101 is put in the decompression chamber 115 of the vacuum packaging device 114, and the inside of the decompression chamber 115 is evacuated by the vacuum pump 116. Thereby, the gas in the jacket material 102 is evacuated and decompressed, and the opening of the jacket material 102 is thermally welded and sealed by the heat sealing machine 117.

At this time, the unsealing member 108 of the gas adsorbing device 104 is an atmospheric pressure external force applied when the vacuum heat insulating material 101 sealed under reduced pressure by the vacuum pump 116 is taken out under atmospheric pressure, or a roll press performed after decompression sealing. Due to the mechanical external force, etc., the vacuum heat insulating material 101 is pushed through the outer covering material 102, and the perforated part 110 pierces the adsorbent storage container 105 to perforate the adsorbent storage container 105.

Thereby, the inside of the gas adsorbing device 104 and the inside of the jacket material 102 of the vacuum heat insulating material 101 communicate with each other, and the gas adsorbing material 106 adsorbs the gas remaining in the jacket material 102.

Here, since the holes formed in the gas adsorption device 104 have a uniform and uniform size, the gas remaining in the outer cover material 102 is reliably adsorbed without variation in the adsorption speed. Will be. Therefore, the vacuum heat insulating material 101 can exhibit good and stable vacuum heat insulating performance.

Further, the unsealing member 108 for punching the gas adsorbing device 104 is elastically fixed to the adsorbent storage container 105 without being displaced, and reliably punches the adsorbent portion of the adsorbent storage container 105. Therefore, poor gas adsorption due to perforation mistakes is also suppressed. Therefore, also from this point, the vacuum heat insulating material 101 reliably adsorbs the gas remaining in the jacket material 102 and maintains the degree of vacuum. Thereby, the vacuum heat insulating material 101 can exhibit a high vacuum heat insulating effect without causing poor heat insulation, and a highly reliable material can be realized.

Further, reliable perforation of the gas adsorption device 104 can also be achieved by forming the perforated portion 110 of the opening member 108 at the center portion rather than the coil-shaped outer peripheral portion. In addition to this action, it is possible to reliably suppress the gas adsorption failure due to the perforation mistake and to further improve the reliability with respect to the vacuum heat insulating effect.

Further, the perforation is performed on the gas adsorption device 104 in a state of being sealed in the outer cover material 102 of the vacuum heat insulating material 101. Therefore, the gas adsorbent 106 is exposed to the air in the atmosphere when the adsorbent storage container 105 is perforated, as in the case where the adsorbent storage container 105 is evacuated, after being pierced in the atmosphere and then put into the jacket material 102. Is prevented from being deteriorated, and the gas adsorption performance of the gas adsorbent 106 can be maintained and ensured to be good for a longer period of time.

Further, the spring wire constituting the unsealing member 108 has a cross section of a circle or an ellipse and an outer peripheral surface of the arc. Therefore, even if the jacket material 102 of the vacuum heat insulating material 101 is strongly pressed against the spring wire material of the opening member 108 by atmospheric pressure, the outer peripheral surface of the spring wire material has an arc shape. Can be prevented, the degree of vacuum of the vacuum heat insulating material 101 can be reliably maintained, and reliability can be ensured. That is, if the opening member 108 is formed of a plate material, stress concentration at atmospheric pressure may occur in the jacket material 102 at the corner of the plate material, which may break the bag. However, in the present embodiment, the unsealing member 108 is a wire, and its outer peripheral surface has an arc shape. Thereby, stress concentration does not occur, and the envelope material 102 can be prevented from being broken. As a result, the vacuum heat insulating material 101 can reliably maintain the degree of vacuum over a long period of time and can ensure the reliability as the vacuum heat insulating material 101.

Further, the opening member 108 for punching the gas adsorption device 104 is made of a metal such as stainless steel. Therefore, gas is released in the jacket material 102 of the vacuum heat insulating material 101, and the degree of vacuum in the jacket material 102 is lowered, or the gas adsorption capability of the gas adsorbent 106 is consumed by this gas adsorption. Can be prevented. Therefore, good gas adsorption performance can be maintained over a long period of time, and the heat insulating property of the vacuum heat insulating material 101 can be kept good.

Furthermore, the protective layer 112a of the laminate film 112 forming the adsorbent storage container 105 is made of PET (polyethylene terephthalate) or a resin having a water absorption equal to or lower than that of PET. Thus, when the gas adsorption device 104 is stored, when the protective layer 112a absorbs moisture in the atmosphere and is applied to the vacuum heat insulating material 101, the water is released in the outer covering material 102 of the vacuum heat insulating material 101, It is possible to prevent the vacuum degree in the jacket material 102 from being lowered and the gas adsorbing capacity of the gas adsorbing material 106 from being consumed by this moisture adsorption. Therefore, the gas adsorption performance is maintained over a longer period, and the heat insulating property of the vacuum heat insulating material 101 to which the gas adsorbing performance is applied is kept good.

The protective layer 112a is more preferably PET or a resin having a water absorption equivalent to or lower than that of PET, but is not particularly limited to these examples.

On the other hand, since the vacuum heat insulating material 101 formed in this way is a gas adsorbing device 104 that is thin and flexible, the vacuum heat insulating material 101 having a thickness of about several millimeters and a vacuum heat insulating material to be curved are used. Can be used. That is, the vacuum heat insulating material which can be used without being restrict | limited to the form and shape of the apparatus to which it is applied is realizable.

And the vacuum heat insulating material 101 formed in this way includes various refrigeration equipment such as refrigerators and vending machines, thermal insulation equipment such as thermostatic baths or pots, tanks for building ultra-low temperature materials such as building materials and LNG, ships, etc. It can also be used as a heat insulating wall, a heat insulating panel, or a heat insulating device.

(Fifth embodiment)
Next, a fifth embodiment of the present disclosure will be described.

FIG. 18 is a plan view showing a state in which the gas adsorbing device opening member and the gas adsorbing device are set according to the fifth embodiment of the present disclosure, and FIG. It is a schematic diagram which shows the expanded cross-section structure which shows the state by which the gas adsorption device was set.

In the gas adsorption device 104 according to the present embodiment, a porous member 118 is inserted into the adsorbent storage container 105 together with the gas adsorbent 106 and sealed under reduced pressure. Further, the gas adsorbent 106 and the porous member 118 are adjacent to each other in a planar state.

Here, the porous member 118 has a structure in which resin powder is sintered and has a three-dimensional network hole, and does not pass the powder of the gas adsorbent 106 but has a porous structure that allows gas to pass. is doing.

The porous member 118 is in contact with the inner surface of the laminate film 112 serving as the adsorbent storage container 105 by atmospheric pressure by evacuation in the manufacturing process of the gas adsorbing device 104. In the present embodiment, the resin constituting the porous member 118 is a heat-meltable resin that is compatible with the adhesive layer 112c that is the innermost layer of the laminate film 112, such as linear low density polyethylene (LLDPE), high It is made of resin such as high density polyethylene (HDPE), low density polyethylene (LDPE), ultrahigh molecular weight polyethylene (UHPE), or polypropylene (PP). Thereby, the porous member 118 and the adhesive layer 112c constituting the innermost layer of the laminate film 112 are physically integrated by heat welding.

The opening member 108 has the same configuration as that described in the fourth embodiment, but the opening member 108 is configured to perforate the porous member 118 portion of the adsorbent storage container 105. It is installed.

As described above, the gas adsorption device 104 configured as described above is manufactured by performing seal welding after reducing the pressure using a vacuuming device. At that time, that is, when the bag of the adsorbent storage container 105 is sealed under reduced pressure, the gas adsorbent 106 in the bag is made porous by sucking and depressurizing from the porous member 118 side toward the gas adsorbent 106 side. The presence of the member 118 can prevent unnecessary suction and exhaust from the bag. Therefore, it can be manufactured by vacuuming without using a special device that has the function of preventing leakage of gas adsorbents, and can be sealed under reduced pressure without slowing down the vacuuming speed, improving productivity and inexpensive gas adsorption devices 104 can be provided.

Further, the gas adsorbent 106 and the porous member 118 are disposed adjacent to each other in a planar state in a flexible bag. Thereby, compared with the case where the gas adsorbent 106 and the porous member 118 are superposed, the thickness can be reduced and deformation such as bending can be facilitated. Therefore, similarly to the fourth embodiment, it can be applied to a thin vacuum heat insulating material of about several millimeters, a vacuum heat insulating material used by being curved in an arc shape, and the like.

Moreover, by increasing the plane width dimension of the bag, the amount of the gas adsorbent 106 can be increased while keeping the thickness thin, and the gas adsorption capacity can be made sustainable over a long period of time. In addition, the unsealing member 108 can be easily attached and workability can be improved.

Further, since the porous member 118 portion of the adsorbent storage container 105 is perforated, the gas adsorption device 104 adsorbs the surrounding gas through the inside of the porous member 118. Thereby, the gas adsorption speed of the gas adsorbent 106 can be arbitrarily set and controlled by the pore diameter and porosity of the porous member 118. Furthermore, the jacket material is aged over time by slowing down the adsorption speed of the gas adsorbent 106 than the adsorption speed of the moisture adsorbent installed separately from the gas adsorption device 104 in the jacket material 102. The moisture adsorbent can adsorb and remove most of the moisture contained in the gas that passes through and enters. Therefore, waste due to moisture adsorption of the gas adsorbing material 106 can be prevented, and the gas in the vacuum heat insulating material can be continuously adsorbed over a long period of time. Therefore, while obtaining the above-described productivity improvement effect, etc., the gas adsorption performance is further stabilized without variation, and the gas adsorption speed is maintained by slowing the gas adsorption rate, so that good heat insulation can be achieved over a longer period of time. The vacuum heat insulating material 101 which exhibits performance can be realized.

Further, the adsorbent storage container 105 of the gas adsorbent 106 has the innermost film member and the porous member 118 thermally welded, that is, the laminate film 112 constituting the adsorbent storage container 105 and the porous member 118. By the compatibility of the resins, the entire surface is bonded without a gap. As a result, the gas adsorbed from around the gas adsorbent 106 does not leak through the gap between the laminate film 112 and the porous member 118 constituting the adsorbent storage container 105, and performance stability is improved. Can be increased. Further, when the bag of the adsorbent storage container 105 is sealed, the bag inner surface and the surface of the porous member 118 can be bonded at the same time as the bag is welded and sealed, and productivity can be improved.

Further, since the porous member 118 is formed by sintering resin powder, the porous member 118 is not cracked by an external force at the time of drilling, and the gas is adsorbed by the gas adsorbent 106 through the crack. It is possible to prevent leak adsorption. Therefore, the gas adsorbent 106 always adsorbs gas through the holes of the porous member 118, and can stabilize the gas adsorption performance.

The other configuration and effects of the gas adsorption device 104, the configuration of the vacuum heat insulating material 101, the manufacturing method, and the effects are the same as those in the fourth embodiment, and the description thereof is omitted.

(Sixth embodiment)
Next, a sixth embodiment will be described.

FIG. 20 is a schematic diagram illustrating an enlarged cross-sectional configuration illustrating a state where the gas adsorbing device opening member and the gas adsorbing device are set according to the sixth embodiment of the present disclosure.

The gas adsorption device 104 in the sixth embodiment has a configuration in which a moisture adsorbent 119 is disposed between the gas adsorbent 106 and the porous member 118 as shown in the fifth embodiment. .

The moisture adsorbing material 119 can be made of calcium oxide (CaO), and other materials such as silica gel, zeolite, or molecular sieve can be used.

With such a configuration, even if the gas adsorbing device 104 includes moisture in the gas adsorbed from the periphery of the gas adsorbing device 104, the moisture adsorbing material 119 can reliably adsorb and remove the moisture. . Therefore, waste due to moisture adsorption of the gas adsorbent 106 can be prevented, good gas adsorption performance can be ensured over a longer period, and reliability can be improved.

Further, since waste of adsorption capacity due to moisture adsorption can be suppressed, it is not necessary to consider the consumption due to moisture adsorption of the copper ion exchanged ZSM-5 type zeolite used as the gas adsorbent 106, and the copper ion exchanged ZSM-5 type zeolite is eliminated. Therefore, the gas adsorption device 104 can be reduced in size.

In addition, since the adhesive layer 112c of the laminate film 112 constituting the adsorbent storage container 105 is melted at a temperature much lower than the melting temperature of glass or the like, the heat welding temperature can be greatly reduced. Therefore, even if the moisture adsorbent 119 is provided in the adsorbent storage container 105, it is possible to prevent the performance of the gas adsorbent 106 from being deteriorated due to degassing of the moisture adsorbent 119. A high-performance gas adsorption device 104 provided with 119 can be realized.

For example, PE as an adhesive layer itself melts at about 100 ° C. to 140 ° C., PP about 130 ° C., EMAA or ethylene ionomer at about 100 ° C., and when these are laminated films, they are laminated. Although it depends on the structure and thickness, it can be welded at about 160 ° C. to 190 ° C. Therefore, even if the moisture adsorbent 119 is provided in the adsorbent storage container 105, the performance of the gas adsorbent 106 can be prevented from deteriorating due to degassing of the moisture adsorbent 119, and the moisture adsorbent 119 can be prevented. Can be realized.

When the moisture adsorbent 119 is used, although not shown, if a nylon film is used between the gas barrier layer 112b and the adhesive layer 112c in the laminate film 112 constituting the adsorbent storage container 105, the strength of the laminate film 112 as a whole. Can be effective. That is, for example, when calcium oxide is used as the moisture adsorbing material 119, if there is a calcium oxide particle having a large particle size, the laminate film 112 has a large tensile force at a portion facing the particle. Join. Then, cracks or pinholes may occur in the aluminum foil constituting the gas barrier layer 112b, starting from the large particles described above. However, as described above, by using a nylon film for the laminate film 112, generation of cracks and pinholes starting from the large particles described above can be suppressed, and performance can be effectively guaranteed. it can.

In addition, the other structure and effect of the gas adsorption device 104 and the structure and manufacturing method and effect of the vacuum heat insulating material 101 are the same as those in the fifth embodiment, and the description thereof is omitted.

As described above, the opening member 108 for the gas adsorption device according to the present disclosure, the gas adsorption device 104 using the same, and the vacuum heat insulating material 101 have been described using the fourth to sixth embodiments. However, the present disclosure is not limited to these.

For example, in the embodiment, the coil shape of the opening member 108 exemplifies that the free length (full length) from the grip portion 109 to the portion where the perforated portion 110 is provided is formed by a cylindrical coil having the same diameter. However, the present disclosure is not limited to this, and a conical coil, an elliptical cylindrical coil, a polygonal cylindrical coil such as a rectangle having a small diameter on the perforated part 110 side, or a helical spring shape having a coil part, etc. It may be.

And, in the case where the coil shape of the opening member 108 is conical, by providing the perforated portion 110 at the apex portion, the perforated portion 110 can be positioned at the coil-shaped central portion, and there are few perforation errors. Reliable drilling can be easily realized. Also, in the case of a rectangular coil shape, the direction of insertion into the adsorbent storage container 105 can be specified, that is, it can be specified by inserting into the adsorbent storage container 105 from the short side of the rectangle. Workability can be improved.

Moreover, although the perforated part 110 illustrated what was bent and bent toward the coil center part from the coil-shaped part, the front-end | tip part was bent to the holding part 109 side, It is made to bend toward the coil center part. Alternatively, the coil portion may be bent as it is toward the grip portion 109.

Furthermore, in the above-described embodiment, the adsorbent storage container 105 of the gas adsorbing device 104 is exemplified by the laminate film 112 formed into a bag shape. This is because the opening of a flat metal container is sealed with the laminate film 112. It may be the configuration.

Moreover, although the porous member 118 illustrated what was comprised by sintering resin powder, this may be things like a nonwoven fabric etc. Moreover, a hole shape is not a three-dimensional network hole, A linear through hole group having a smaller diameter than the powder particles of the gas adsorbent 106 may be used.

Further, as the vacuum heat insulating material 101, the core material 103 is sealed under reduced pressure in the flexible jacket material 102, but this is because the jacket material 102 is made of a rigid body having no flexibility. For example, a metal plate or a resin plate, or a box made of a metal plate or a resin plate, which is configured by sealing an opening of a box with a flexible sheet, etc. Can be assumed.

As described above, the embodiments disclosed herein are illustrative and non-restrictive in every respect, and the scope of the present invention is not limited to the above description but is defined by the claims. And is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

As described above, the present disclosure is highly productive, can be provided at a low cost, and is thin and flexible, so that it can be applied to a wide variety of vacuum heat insulating materials. There is a special effect that the adsorption capacity is sustainable. Therefore, the present disclosure is used for applications that require a heat insulating material that has excellent heat insulation performance and durability over time, such as a refrigerator, a heat insulating container, a vending machine, a heat pump water heater, an electric water heater, a shipping container, an automobile, a railway vehicle, In addition, it can be suitably used for heat insulators of LNG ships and houses, and is useful.

DESCRIPTION OF SYMBOLS 1,101 Vacuum heat insulating material 2,102 Cover material 3,103 Core material 4,104 Gas adsorption device 5 Wrapping bag 6,106 Gas adsorption material 7,118 Porous member 7a Crossing surface part 8 Protrusion 9,108 Opening member DESCRIPTION OF SYMBOLS 10 Film 10a Protective layer 10b Gas barrier layer 10c Adhesive layer 11,114 Vacuum packaging machine 12,115 Depressurization chamber 13,116 Vacuum pump 14,117 Heat seal machine 15,119 Moisture adsorbent 105 Adsorbent storage container 105a Thin part 109 Grasping part 110 Perforated part 112 Laminate film 112a Protective layer 112b Gas barrier layer 112c Adhesive layer

Claims

A bag having gas barrier properties and flexibility;
A gas adsorbent sealed under reduced pressure in the sachet;
A gas adsorption device comprising a porous member disposed adjacent to the gas adsorbent in a planar state inside the sachet.
The gas adsorption device according to claim 1, wherein an intersecting surface portion of the porous member intersecting with a surface adjacent to the gas adsorbing material is bonded to the wrapping bag.
The gas adsorption device according to claim 2, wherein the intersecting surface portion of the porous member is thermally welded to the inner surface of the bag.
The wrapping bag is composed of a multi-layer laminate film including a gas barrier layer made of metal foil,
The gas adsorption device according to any one of claims 1 to 3, wherein an innermost layer film member and the porous member of the plurality of laminated films are heat-welded.
The gas adsorption device according to any one of claims 1 to 3, wherein the porous member is formed by sintering resin powder.
The gas adsorption device according to any one of claims 1 to 5, wherein the porous member has a porous structure that allows gas to pass therethrough but cannot pass the powder particles of the gas adsorbent.
The gas adsorption device according to any one of claims 1 to 6, wherein the gas adsorbent is a copper ion exchange ZSM-5 type zeolite.
The gas adsorption device according to claim 4, wherein the laminate film forming the sachet further includes a protective layer that covers a surface of the gas barrier layer.
The gas adsorption device according to claim 8, wherein the protective layer is made of PET (polyethylene terephthalate) or a resin having a water absorption equal to or lower than that of PET.
The gas adsorption device according to any one of claims 1 to 9, wherein a moisture adsorbent is interposed between the gas adsorbent and the porous member.
The gas adsorption device according to any one of claims 1 to 10,
A core material,
With a jacket material,
A vacuum heat insulating material configured such that the gas adsorbing device and the core material are inserted into the jacket material and sealed under reduced pressure.
The vacuum heat insulating material according to claim 11, wherein the gas adsorbing device communicates the inside of the jacket material and the inside of the gas adsorbing device by perforating a portion of the porous member.
The said heat | fever adsorption device is a vacuum heat insulating material of Claim 11 or Claim 12 which has an opening member which has a protrusion in the opposing part of the said crossing surface part of the said porous member of the said bag.