JP4867699B2 - Gas adsorption device - Google Patents

Description

  The present invention relates to a gas adsorption device capable of storing a gas adsorbent in the atmosphere.

  In recent years, expectations for industrial technology that requires high vacuum are increasing. For example, energy saving is strongly desired from the viewpoint of preventing global warming, and energy saving is an urgent issue for household appliances. In particular, a heat insulating material having excellent heat insulating performance is required from the viewpoint of efficiently using heat in a heat and cold insulation device such as a refrigerator, a freezer, and a vending machine.

  As general heat insulating materials, fiber materials such as glass wool and foams such as urethane foam are used. However, in order to improve the heat insulation performance of these heat insulating materials, it is necessary to increase the thickness of the heat insulating material, and there is a limit to the space that can be filled with the heat insulating material, so when space saving and effective use of the space are necessary It cannot be applied.

  Therefore, vacuum heat insulating materials have been proposed as high performance heat insulating materials. This is a heat insulator in which a core material serving as a spacer is inserted into a jacket material having gas barrier properties and the inside is decompressed and sealed.

  By increasing the degree of vacuum inside the vacuum heat insulating material, high-performance heat insulating performance can be obtained, but the gas existing inside the vacuum heat insulating material is roughly divided into the following three types. The first is the gas that cannot be evacuated during vacuum insulation material production, and the second is the gas generated from the core material and jacket material after being sealed under reduced pressure (adsorbed on the core material and jacket material). The third gas is a gas that enters from the outside through the jacket material.

  In order to adsorb these gases, a method of filling the vacuum heat insulating material with the adsorbent has been devised.

  For example, there exists what adsorb | sucks the gas in a vacuum heat insulating material using a Ba-Li alloy (for example, refer patent document 1). Of the gases to be adsorbed by the adsorbent in the vacuum heat insulating material, one of the gases that are difficult to adsorb is nitrogen. This is because the nitrogen molecule is a nonpolar molecule having a large binding energy of about 940 kJ / mol, and thus it is difficult to activate. However, nitrogen can be adsorbed by the Ba-Li alloy, and the degree of vacuum inside the vacuum heat insulating material is maintained.

For the purpose of further improving the performance of the vacuum heat insulating material, the vacuum degree inside the vacuum heat insulating material is further reduced, and it is more active than Ba-Li for equipment that requires a high vacuum such as a plasma display panel. The practical application of a gas adsorbent is desired.
Japanese National Patent Publication No. 9-512088

  However, the conventional configuration described in Patent Document 1 does not require heat treatment for activation, can adsorb nitrogen even at room temperature, and can be handled in an air atmosphere for several minutes. Under conditions for industrially manufacturing an apparatus using an adsorbent, a longer allowable time is desirable for handling.

  This is because most of the nitrogen adsorption capacity is consumed in the manufacturing process that comes into contact with air, so that the adsorption capacity for maintaining the performance over time of the equipment using the gas adsorbent becomes poor, and the performance deterioration and performance variation increase. This is to prevent this. While further improvement in performance of vacuum heat insulating materials and the like is desired, in order to maintain the degree of vacuum inside the equipment, it has been a big problem to use the adsorbent more stably and efficiently.

  The height of activity of the gas adsorbent, that is, the time until the adsorption is saturated when left in the atmosphere varies depending on the form and material specifications. For example, if the gas adsorbent is in the form of pellets, it will not saturate even if left in the atmosphere for a relatively long time. On the other hand, if the gas adsorbent is in powder form, the specific surface area becomes large, so that even if it is left in the atmosphere for a short time, it is saturated.

  Therefore, in the above structure, when a powdery gas adsorbent is used, which has a higher activity than Ba-Li, there is a possibility that the time that can be contacted with the atmosphere will be very short.

  An object of the present invention is to solve the above-described conventional problems, and an object of the present invention is to provide a gas adsorption device that can be stored in the atmosphere for a long time even when the highly active gas adsorbent is in a powder form.

  In order to achieve the above object, the gas adsorbing device of the present invention comprises a gas adsorbing material and a thermoplastic material, the gas adsorbing material adsorbs an external gas until the gas adsorbing material is contained and a through hole is formed. For the container that has been softened at a predetermined temperature rise, the container that has been softened with a predetermined temperature rise is applied to the container that is not softened, and the container that has been softened at a predetermined temperature rise. A member that deforms the container with force to open a through-hole in the container.

  In the above configuration, the member applies a piercing force to the container before softening, but due to the relationship between the strength of the container and the piercing force of the member, the member has not yet reached a through hole in the container. The container is kept in a hermetically sealed state, and the gas adsorbent in the container does not adsorb the gas outside the container and the adsorbing power is not deteriorated. For this reason, when the gas adsorbing device is not used, the gas adsorbing device containing the gas adsorbing material can be stored for a long time without deteriorating the gas adsorbing material.

  Moreover, when using a gas adsorption device, the temperature of a gas adsorption device is raised more than predetermined temperature. When the temperature of the container is raised to a predetermined temperature (the softening temperature of the container) or higher, the container is made of a thermoplastic material and softens as the temperature rises, and the container is deformed by the piercing force of the member. The gas adsorbent in the container can adsorb the gas outside the container.

  As described above, in the gas adsorption device of the present invention, the space in which the gas adsorbent in the container exists is separated from the space in which the gas adsorbent in the container exists from the space outside the container. Since the change to the state of communication with the gas adsorbent (releasing the gas adsorbent) occurs due to a change in the predetermined temperature, there is no need to control factors other than temperature when applying the gas adsorbent to vacuum equipment, and productivity It is possible to improve. In addition, since the gas adsorption device can be switched by controlling the temperature after application to the vacuum device, it is possible to switch even when it is impossible to apply a force from the outside of the housing of the vacuum device.

  Here, the vacuum equipment refers to equipment that exhibits its function by evacuating the inside, such as a vacuum heat insulating material.

  The switching means that the gas adsorbing device container is released from hermeticity and the gas adsorbing material can adsorb gas outside the container.

  Since the gas adsorbing device is switched depending on the temperature, it is only necessary to control the atmospheric temperature at the time of installation in the vacuum equipment, and switching can be performed in any situation. Therefore, even when the vacuum device casing is not deformed and a force cannot be applied from the outside, it can be switched.

  Moreover, the gas adsorption device can be installed in a vacuum device and can be switched after the vacuum device is sealed. Therefore, gas that does not need to be adsorbed, that is, gas outside the vacuum device is not adsorbed, and deterioration of the gas adsorbent during storage and application to the vacuum device can be prevented.

  The invention of the gas adsorption device according to claim 1 of the present invention is that the gas adsorbent adsorbs an external gas until a through-hole is formed by containing the gas adsorbent and a gas adsorbent and a thermoplastic material. For the container that has been softened at a predetermined temperature rise, the container that has been softened with a predetermined temperature rise is applied to the container that is not softened, and the container that has been softened at a predetermined temperature rise. A member that deforms the container with force to open a through-hole in the container.

  In the above configuration, the member applies a piercing force to the container before softening, but due to the relationship between the strength of the container and the piercing force of the member, the member has not yet reached a through hole in the container. The container is kept in a hermetically sealed state, and the gas adsorbent in the container does not adsorb the gas outside the container and the adsorbing power is not deteriorated. For this reason, when the gas adsorbing device is not used, the gas adsorbing device containing the gas adsorbing material can be stored for a long time without deteriorating the gas adsorbing material.

  Moreover, when using a gas adsorption device, the temperature of a gas adsorption device is raised more than predetermined temperature. When the temperature of the container is raised to a predetermined temperature (the softening temperature of the container) or higher, the container is made of a thermoplastic material and softens as the temperature rises, and the container is deformed by the piercing force of the member. The gas adsorbent in the container can adsorb the gas outside the container.

  As described above, in the gas adsorption device of the present invention, the space in which the gas adsorbent in the container exists is separated from the space in which the gas adsorbent in the container exists from the space outside the container. Since the change to the state of communication with the gas adsorbent (releasing the gas adsorbent) occurs due to a change in the predetermined temperature, there is no need to control factors other than temperature when applying the gas adsorbent to vacuum equipment, and productivity It is possible to improve. In addition, since the gas adsorption device can be switched by controlling the temperature after application to the vacuum device, it is possible to switch even when it is impossible to apply a force from the outside of the housing of the vacuum device.

  In addition, since the gas adsorption device is switched depending on the temperature, it is only necessary to control the atmospheric temperature at the time of installation in the vacuum equipment, and the switching can be performed in any situation. Therefore, even when the vacuum device casing is not deformed and a force cannot be applied from the outside, it can be switched.

  Moreover, the gas adsorption device can be installed in a vacuum device and can be switched after the vacuum device is sealed. Therefore, gas that does not need to be adsorbed, that is, gas outside the vacuum device is not adsorbed, and deterioration of the gas adsorbent during storage and application to the vacuum device can be prevented.

  The higher the activity of the gas adsorbent and the greater the specific surface area, the more severe the handling conditions. That is, in order to maintain the activity of the gas adsorbent, the time that can be contacted with air is shortened, and the pressure that can be contacted is also reduced.

  Therefore, such a gas adsorbing material also has a problem of deterioration when it is installed in a vacuum apparatus in addition to storage. Therefore, when installing the gas adsorbent in the vacuum equipment, it is necessary to communicate after the space in which the gas to be adsorbed, that is, the pressure inside the vacuum equipment is as low as possible.

  As an example of vacuum equipment, when a gas adsorbent is applied to a vacuum heat insulating material, a core material and a gas adsorbent inserted into a gas barrier outer jacket material are placed in the chamber, the chamber is decompressed, After decompressing the inside of the material, the opening of the jacket material is sealed.

  At this time, the pressure in the chamber is reduced by a vacuum pump. In the normal pressure region, that is, before vacuum sealing, the pressure can be reduced by either a pump or an adsorbent. On the other hand, in the low pressure region, that is, inside the jacket material after vacuum sealing, there is a gas that could not be decompressed by the vacuum pump, a gas that penetrates through the jacket material after vacuum sealing, and a gas generated from the core material, These can be adsorbed only with a gas adsorbent. Therefore, in order to fully demonstrate the capability of the gas adsorbent inside the outer jacket material after vacuum sealing, it is necessary to communicate with the outside after vacuum sealing.

  Since the vacuum equipment is sealed after the gas adsorbing material is installed inside, it is difficult to switch the gas adsorbing device by applying a force directly from the outside. Therefore, it is desirable to switch the gas adsorbent by remote control. As a means for switching by remote operation, a method of releasing the sealing of the gas adsorption device by changing the temperature of the gas adsorption device is effective.

  After the vacuum apparatus is sealed, the temperature of the internal gas adsorption device is also changed by changing the temperature, and switching is possible by reaching a predetermined temperature. As a method of switching due to temperature change, in the present invention, a piercing force is applied to the container in advance with a member, and the container strength is superior in a low temperature state, so it does not deform, but by softening and deforming due to the temperature rise of the container, A method of generating a through hole is adopted.

  By using the method as described above, the gas adsorbing device can be deformed without applying external force, the sealing property can be released, and the adsorbing ability can be exhibited.

  Further, since the switching is performed after sealing the vacuum equipment, if a gas that is difficult to be adsorbed by the gas adsorbent exists in the gas adsorption device, it remains in the vacuum equipment after the vacuum sealing. Therefore, the inside of the gas adsorption device needs to be evacuated in advance, and the allowable pressure is 100 Pa or less.

Here, the container is one that divides the space into the inside and outside like a spherical shell, for example. Further, the container is excellent in gas barrier properties, and the gas permeability is preferably 10 ⁴ [cm ³ / m ² · day · atm] or less, and more preferably 10 ³ [cm ³ / m ² · day · atm] or less. It will be.

  The thermoplastic material is more easily deformed by the same pressing force due to an increase in temperature. There are metals, glass, plastics and the like that satisfy these conditions.

  The member that applies a pressing force (piercing force) to the container is a member that constantly applies a force to the container without applying an external force by setting it to a predetermined state. These means apply a force to the container according to the law of reaction by applying deformation to the elastic body and preventing the container from attempting to return the deformation. For example, it corresponds to enclosing a compression spring in a compressed state in a container having a finite size. The compression spring applies a pressing force (piercing force) to the container by trying to be long.

  The softening in the present invention means that the strength of the material is lowered and a through hole can be generated. Therefore, the softening temperature of glass, the softening temperature of plastic, etc. may be different from the normally defined temperature. Therefore, the softening temperature is not unique depending on the substance, and is determined in consideration of the pressing force (piercing force) applied to the container. That is, when the pressing force (the piercing force) applied to the container is large, the temperature at which the container is softened is lower than the normally defined temperature because the container can be deformed to generate a through-hole even if the container is strong. When the force applied to the container is small, the softening temperature of the container is close to the normally defined softening temperature.

  The invention of the gas adsorption device according to claim 2 is the invention according to claim 1, wherein when the member applies a piercing force to the softened container, a portion where the container deforms is limited, A support body that prevents the container from being deformed so that a through hole is not formed in the container is provided so as to contact or be close to an inner surface of a portion of the container that is desired to be prevented from being deformed by the member.

  When the container softens due to an increase in temperature, it easily deforms. Therefore, the container is deformed by a force applied in advance by a member that applies a pressing force (piercing force) to the container. At this time, since the container is low in brittleness, the container is deformed following the pressing force (piercing force) of the member, and a through hole is hardly generated. In order to generate a through-hole in a softened container, it is effective to concentrate deformation due to a pressing force (piercing force) on a narrow part of the container. For this purpose, it is necessary to limit the deformation around the part to be deformed in order to cause the container to be deformed in part. Thus, the member which restrict | limits the deformation | transformation around the part to deform | transform is called a support body. Further, sufficient strength is strength that can maintain the shape against the pressing force (piercing force) of the member and limit deformation of the container.

  Thus, since the deformation of the container is concentrated on the portion where the deformation is not restricted by the support, the deformation rate of this portion becomes very large and the wall surface of the container is broken. Accordingly, a through hole is formed in the container, and external gas can be adsorbed.

  Here, the support is not particularly limited as long as it has sufficient strength at the softening temperature of the container and generates less gas, and materials such as metal, glass, and ceramics can be used.

  In the invention of the gas adsorption device according to claim 3, the container in the invention according to claim 1 or 2 is made of plastic.

  The vacuum equipment maintains its shape against atmospheric pressure due to the strength of the components. For this reason, if a part of vacuum equipment becomes higher than a softening temperature, it will deform | transform by atmospheric pressure. Therefore, it is essential that the softening temperature of the container is lower than the softening temperature of the components of the vacuum equipment. Plastics have a remarkably lower softening temperature than thermoplastic materials such as metals and glass, so that it is easier to lower the softening temperature than components of vacuum equipment. Therefore, the freedom degree of a structure of a vacuum device can be improved by making a container into a plastic.

  According to a fourth aspect of the invention of the gas adsorption device, the container in the third aspect of the invention is made of polyethylene terephthalate.

Since polyethylene terephthalate has a particularly low softening temperature among plastics, a through-hole can be formed in the container at a lower temperature. In addition, since the gas barrier property is high, the gas permeability may be 10 ⁴ [cm ³ / m ² · day · atm] or less or 10 ³ [cm ³ / m ² · day · atm] or less with a thinner thickness. Is possible. Accordingly, the cost and size of the container can be reduced. Furthermore, since the versatility is particularly high among thermoplastic resins, it is possible to obtain a more reliable container.

  According to a fifth aspect of the present invention, the container in the third aspect of the invention is made of polyethylene.

  The gas adsorbent generally has a high affinity with water. Therefore, when the gas inside the container contains a large amount of moisture, the amount of gas that can be adsorbed decreases by adsorbing water. In order to selectively adsorb the gas, measures such as covering the periphery of the gas adsorbent with a moisture adsorbent and reducing the amount of water contained in the gas reaching the gas adsorbent are necessary.

  On the other hand, when the moisture contained in the gas inside the container is small, it is not necessary to take special measures.

  Here, since the moisture permeability of polyethylene is small in the thermoplastic resin, it is possible to reduce the amount of moisture inside the container by suppressing the penetration of moisture into the container.

  Therefore, it is not necessary to cover the periphery of the gas adsorbing material with the moisture adsorbing material, and the cost for producing the gas adsorbing device can be reduced.

  The invention of the gas adsorption device according to claim 6 is the invention according to any one of claims 1 to 5, wherein at least a part of the member is made of metal.

  The temperature at which the through hole is generated in the container is desirably as low as possible in order to reduce the temperature applied to the vacuum equipment. For this reason, it is desirable to increase the force applied per unit area of the container so that a through hole is formed even if the degree of softening of the container is small.

  Increasing the force applied to the unit area of the container is achieved by reducing the contact area between the member that applies a pressing force (piercing force) to the container and the container. In order to reduce the contact area between the member that applies a pressing force (piercing force) to the container and the container, the portion where the member contacts the container may be formed into a sharp shape.

  At this time, when the softening temperature of the portion where the member contacts the container is lower than or equal to the softening temperature of the container, the sharpness is lost at the softening temperature of the container. Therefore, the softening temperature of the portion where the member comes into contact with the container is required to be significantly higher than the softening temperature of the container. Since metal has a remarkably higher softening temperature than plastic, the above conditions can be satisfied.

  As a metal that can be used in the present invention, it is desirable to use a metal that is usually used as a structure, such as iron, copper, and aluminum. In addition, an alloy that can be used as a structure, such as stainless steel and duralumin, may be used instead of a single metal.

  An invention of a gas adsorption device according to a seventh aspect is the invention according to any one of the first to sixth aspects, wherein at least a part of the member is a spring.

  In order for the member to continuously apply a pressing force (piercing force) to the container, a phenomenon can be used in which a part of the member is made of an elastic body and a force is applied to the container by applying the force to release the force. For example, the object is sandwiched between clips.

  Since the elastic body is a spring, the force applied to the container can be easily controlled.

  The invention of the gas adsorption device according to claim 8 is the one in which the member in the invention according to claim 6 or 7 is provided in the container.

  If sufficient space cannot be secured inside the vacuum device, the gas adsorption device is required to be as small as possible. By enclosing a member that applies a pressing force (piercing force) to the container, the gas adsorption device can be miniaturized. Furthermore, since a pressing force (piercing force) is applied to the container from the inside, it is easy to fix the member to the container, the structure can be simplified, and the cost can be reduced.

  An example of a simplified structure and a technique for applying a pressing force (piercing force) is to enclose a spring member in a contracted state. Since the spring continues to apply a force to be stretched to the container, the spring softens as the temperature of the container rises, and a through hole is generated in the container.

  The invention of the gas adsorption device according to claim 9 is such that the member in the invention according to claim 6 or 7 is externally provided in a container.

  Since a member for applying a pressing force (piercing force) to the container is provided outside the container, the pressing force (piercing force) applied to the container acts from the outside to the inside of the container. Therefore, even if it is difficult to generate a through-hole by pressing force (piercing force) from the inside to the outside of the container because the outside of the container is filled with an object that is difficult to deform, the through-hole can be easily formed. Can be generated.

  In the gas adsorption device according to claim 10, the gas adsorbent according to any one of claims 1 to 9 is made of CuZSM-5.

  CuZSM-5 is very highly active, so any contact with air before use should be avoided. By increasing the temperature of the container after installation in the vacuum device, contact with air during the installation process in the vacuum device can be prevented.

  As described above, the container softened by the rise in temperature is caused to have a through-hole by the pressing force (piercing force) applied in advance and the hermeticity is released, so that the gas adsorbent in the container Gas can be adsorbed.

  In addition to polyethylene terephthalate and polyethylene, nylon, polystyrene, polybutylene terephthalate, etc. can be used as plastics. In each plastic, the molecular weight is optimized and the softening temperature is controlled by additives to change the switching temperature. To do.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments. Moreover, a vacuum heat insulating material is mention | raise | lifted as an example of a vacuum device.

(Embodiment 1)
1 is a side view before switching of a gas adsorption device according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view before switching of the gas adsorption device according to Embodiment 1, and FIG. 3 is the same embodiment. 2 is a cross-sectional view after switching of the gas adsorption device in FIG.

  As shown in FIGS. 1 to 3, the gas adsorption device 1 according to the present embodiment is composed of a gas adsorbent 2 made of CuZSM-5 and polyethylene terephthalate, which is a cylindrical and thermoplastic material closed at both ends. Enclose the gas adsorbent 2 in a vacuum state and prevent the gas adsorbent 2 from adsorbing external gas until a through-hole is formed, and expand both ends with a substantially C-shaped metal spring, and both ends are containers 3 is pressed against the cylindrical outer peripheral surface of the container 3 so as to apply a pressing force (piercing force) from the outside to the inside of the container 3. The member 3 that continues to apply a piercing force to the container 3 with a force that does not penetrate and softens the container 3 with a predetermined temperature rise, and a member 4 that deforms the container 3 with the piercing force to open a through hole in the container 3, and soften The member 4 pierces the container 3 in the state of being A cylindrical support body that is made of metal and prevents a deformation of the container 3 so that the container 3 does not have a through-hole by restricting a portion where the container 3 deforms, and having a hole in a part of the side wall surface. The support 5 is in contact with or in close proximity to the inner surface of the portion of the container 3 where deformation by the member 4 is to be prevented so that the hole of the support 5 overlaps one end of the substantially C-shaped member. It is provided to do.

  FIG. 4 is a schematic cross-sectional view of a vacuum heat insulating material including the gas adsorption device according to the first embodiment.

  As shown in FIG. 4, the vacuum heat insulating material 6 puts the gas adsorbing device 1 and the core material 7 made of glass fiber in a jacket material 8 which is formed into a bag shape by sealing three sides of a plastic laminate film. The opening of the bag-shaped outer covering material 8 is sealed under reduced pressure.

  Regarding the gas adsorption device 1 of the present embodiment configured as described above, the operation and action of the gas adsorption device 1 will be described below.

  Initially, the gas adsorbent 2 is vacuum-sealed in a closed space formed by a plastic (polyethylene terephthalate) container 3. The gas adsorption device 1 is stored at a temperature near room temperature. One end of the member 4 with a sharp tip is applied to the container 3, but the container 3 is not softened because the gas adsorbing device 1 is stored at a temperature near room temperature. And the strength of the piercing force of the member 4, the member 4 has not yet reached a through hole in the container 3, the container 3 is kept sealed, and the gas adsorbent 2 in the container 3 is a container The gas outside 3 is not adsorbed and the adsorbing power is not deteriorated. Therefore, when the gas adsorption device 1 is not used, even if the gas adsorption device 1 is left in the atmosphere for a long time, the gas adsorbent 2 does not touch the gas outside the container 3 and does not deteriorate the gas adsorbent 2. The gas adsorption device 1 containing the gas adsorbent 2 can be stored in the atmosphere for a long time.

  When the vacuum heat insulating material 6 is heated after the gas adsorbing device 1 and the core material 7 are sealed under reduced pressure in the outer cover material 8, heat is transferred to the gas adsorbing device 1 through the outer cover material 8 and the core material 7. The temperature will also rise. When the temperature of the container 3 is raised to a predetermined temperature (the temperature at which the container 3 softens) or higher, the container 3 is made of a thermoplastic material (thermoplastic plastic), and therefore softens as the temperature rises. However, since the support 5 limits the deformable portion of the container 3, the deformation of the container 3 is caused by the protrusion of one end of the substantially C-shaped member 4 being pressed against the container 3 (the piercing force). ) Concentrate on and around the part to add. Eventually, the deformation rate of the deformed portion of the container 3 is increased, a through hole is formed in the container 3, and the gas adsorbing material 2 in the container 3 can adsorb the gas in the jacket material 8 outside the container 3. become.

  With the mechanism as described above, the gas adsorbent 2 can be applied to the vacuum heat insulating material 6 without being deteriorated in both cases of storage and application to the vacuum heat insulating material 6, and the internal pressure can be reduced. It is possible to maintain the degree of vacuum over a long period of time.

  The gas adsorbing device 1 according to the present embodiment includes a gas adsorbing material 2 and a container made of a thermoplastic material and containing the gas adsorbing material 2 to prevent the gas adsorbing material 2 from adsorbing an external gas until a through hole is formed. 3 and the container 3 before being softened, the piercing force is continuously applied to the container 3 with a force that does not penetrate the container 3, and the container 3 that has been softened at a predetermined temperature rise is applied with the piercing force. And a member 4 that opens a through-hole in the container 3 by deforming.

  In the above configuration, the member 4 applies a piercing force to the container 3 before being softened, but the member 4 opens a through hole in the container 3 due to the relationship between the strength of the container 3 and the piercing force of the member 4. The container 3 is kept in a sealed state, and the gas adsorbent 2 in the container 3 does not adsorb the gas outside the container 3 and the adsorption power is not deteriorated. For this reason, when the gas adsorbing device 1 is not used, the gas adsorbing device 1 containing the gas adsorbing material 2 can be stored for a long time without deteriorating the gas adsorbing material 2.

  Moreover, when using the gas adsorption device 1, the temperature of the gas adsorption device 1 is raised more than predetermined temperature. When the temperature of the container 3 is raised to a predetermined temperature (the softening temperature of the container) or higher, the container 3 is made of a thermoplastic material and softens as the temperature rises, and the container 3 is deformed by the piercing force of the member 4, and eventually, A through hole is formed in the container 3, and the gas adsorbent 2 in the container 3 can adsorb the gas outside the container 3.

  As described above, in the gas adsorption device 1 according to the present embodiment, the gas adsorbent 2 in the container 3 exists from the state where the space in which the gas adsorbent 2 in the container 3 exists is blocked from the space outside the container 2. Since the change to the state in which the space to be communicated with the space outside the container 3 (releasing release of the gas adsorbent 2) occurs due to a change in the predetermined temperature, when applying the gas adsorbent 2 to the vacuum device 6, the temperature It is not necessary to control other factors, and productivity can be improved. Further, since the gas adsorption device 1 can be switched by controlling the temperature after application to the vacuum device 6, it is possible to switch even when it is impossible to apply force from outside the housing of the vacuum device 6. is there.

  In the gas adsorption device 1 according to the present embodiment, since the gas adsorption device 1 is switched depending on the temperature, it is only necessary to control the ambient temperature when the vacuum adsorption device 6 is installed, and the gas adsorption device 1 can be switched in any situation. . Therefore, even when the vacuum device 6 casing is not deformed and a force cannot be applied from the outside, it can be switched.

  Moreover, the gas adsorption | suction device 1 is installed in the vacuum equipment 6, and the switching after sealing the vacuum equipment 6 is possible. Accordingly, gas that does not need to be adsorbed, that is, gas outside the vacuum device 6 is not adsorbed, and deterioration of the gas adsorbent during storage and application to the vacuum device 6 can be prevented.

  The more highly active the gas adsorbent 2 is and the larger the specific surface area is, the more severe the handling conditions are. That is, in order to maintain the activity of the gas adsorbent 2, the time that can be contacted with air is shortened, and the pressure that can be contacted is also reduced.

  Therefore, the gas adsorbent 2 has a problem of deterioration when it is installed in the vacuum device 6 in addition to the storage. Therefore, when installing the gas adsorbent 2 in the vacuum device 6, it is necessary to communicate after the space in which the gas to be adsorbed, that is, the pressure inside the vacuum device 6 is as low as possible.

  As an example of the vacuum device 6, when the gas adsorbent 2 is applied to the vacuum heat insulating material 6, the core material 7 and the gas adsorbent 2 inserted into the gas barrier outer covering material 8 are installed in the chamber, and then the chamber , And the inside of the jacket material 8 is decompressed, and then the opening of the jacket material 8 is sealed.

  At this time, the pressure in the chamber is reduced by a vacuum pump. In the normal pressure region, that is, before vacuum sealing, the pressure can be reduced by either the pump or the gas adsorbent 2. On the other hand, in the low pressure region, that is, inside the jacket material 8 after vacuum sealing, there is a gas that cannot be decompressed by the vacuum pump, a gas that enters through the jacket material after vacuum sealing, and a gas that is generated from the core material 7. However, these can be adsorbed only by the gas adsorbent 2. Therefore, in order to fully demonstrate the capability of the gas adsorbent 2 inside the envelope material 8 after vacuum sealing, it is necessary to communicate with the outside after vacuum sealing.

  Since the vacuum apparatus 6 is sealed after the gas adsorbent 2 is installed inside, it is difficult to switch the gas adsorption device 1 by applying a force directly from the outside. Therefore, it is desirable to switch the gas adsorbent 1 by remote operation. As a means for switching by remote operation, a method of releasing the sealing of the gas adsorption device 1 by a temperature change of the gas adsorption device 1 is effective.

  After the vacuum apparatus 6 is sealed, the temperature of the internal gas adsorption device 1 is also changed by changing the temperature, and can be switched by reaching a predetermined temperature. In the present embodiment, as a method of switching by temperature change, a piercing force is applied to the container 3 by the member 4 in advance, and the container 3 is not deformed because the strength of the container 3 is superior in a low temperature state, but is softened by the temperature rise of the container 3. Thus, a method of generating a through hole by deforming is adopted.

  By using the method as described above, the gas adsorbing device 1 can be deformed without applying a force from the outside, the sealing performance is released, and the adsorption capability can be exhibited.

  Furthermore, since the gas adsorption device 1 is switched after the vacuum apparatus 6 is sealed, if there is a gas that is difficult to be adsorbed by the gas adsorbent 2, it remains in the vacuum apparatus 6 after the vacuum seal. Therefore, the inside of the gas adsorption device 1 needs to be evacuated in advance, and its allowable pressure is 100 Pa or less.

Further, the container 3 is excellent in gas barrier properties, and the gas permeability is preferably 10 ⁴ [cm ³ / m ² · day · atm] or less, more preferably 10 ³ [cm ³ / m ² · day · atm]. It becomes the following.

  Moreover, the gas adsorption device 1 of this Embodiment restrict | limits the part which the container 3 deform | transforms when the member 4 applies the stab force to the container 3 of the softened state, and the container 3 does not have a through-hole. The support 5 that prevents the container 3 from being deformed is provided so as to abut on or be close to the inner surface of a portion of the container 3 that is desired to be prevented from being deformed by the member 4.

  When the container 3 is softened due to an increase in temperature, the container 3 is easily deformed. Therefore, the container 3 is deformed by the force applied in advance by the member 4 that applies a pressing force (piercing force) to the container 3. At this time, since the brittleness of the container 3 is low, the container 3 is deformed following the pressing force (piercing force) of the member 4, and a through-hole is hardly generated. In order to generate a through-hole in the softened container 3, it is effective to concentrate deformation due to the pressing force (piercing force) on a narrow portion of the container 3. For this purpose, it is necessary to limit the deformation around the portion to be deformed in order to cause the deformation of the container 3 to a part. Therefore, deformation around the portion to be deformed is limited by the support 4.

  As described above, the deformation of the container 3 is concentrated on the portion where the deformation is not limited by the support 4, so that the deformation rate of this portion becomes very large and the wall surface of the container 3 is broken. Therefore, a through hole is formed in the container 3 and external gas can be adsorbed.

  Here, the support 4 needs to have sufficient strength at the softening temperature of the container 3 and generate less gas. In the present embodiment, the support 4 is made of metal, but a material such as glass or ceramics is used. It can also be used.

  Moreover, as for the gas adsorption | suction device 1 of this Embodiment, the container 3 consists of plastics.

  The vacuum device 6 maintains its shape against atmospheric pressure due to the strength of the components. For this reason, when a part of the vacuum device 6 becomes higher than the softening temperature, it is deformed by the atmospheric pressure. Therefore, it is essential that the softening temperature of the container 3 is lower than the softening temperature of the components of the vacuum device 6. Since plastic has a remarkably lower softening temperature than thermoplastic materials such as metal and glass, it is easy for the softening temperature to be lower than the components of the vacuum device 6. Therefore, the freedom degree of the structure of the vacuum equipment 6 can be improved by making the container 3 into a plastic.

  Moreover, as for the gas adsorption device 1 of this Embodiment, the container 3 consists of a polyethylene terephthalate.

Since polyethylene terephthalate has a particularly low softening temperature among plastics, a through hole can be formed in the container 3 at a lower temperature. In addition, since the gas barrier property is high, the gas permeability may be 10 ⁴ [cm ³ / m ² · day · atm] or less or 10 ³ [cm ³ / m ² · day · atm] or less with a thinner thickness. Is possible. Accordingly, the cost and size of the container 3 can be reduced. Furthermore, since the versatility is particularly high among thermoplastic resins, it is possible to obtain a more reliable container 3.

  Further, in the gas adsorption device 1 of the present embodiment, at least a part of the member 4 is made of metal.

  The temperature at which the through hole is generated in the container 3 is desirably as low as possible in order to reduce the temperature applied to the vacuum device 6. For this reason, it is desirable to increase the force applied per unit area of the container 3 so that a through hole is generated even if the degree of softening of the container 3 is small.

  Increasing the force applied to the unit area of the container 3 is achieved by reducing the contact area between the member 4 that applies a pressing force (piercing force) to the container 3 and the container 3. In order to reduce the contact area between the member 4 that applies a pressing force (piercing force) to the container 3 and the container 3, the portion where the member 4 contacts the container 3 may have a sharp shape (having a sharp tip).

  At this time, when the softening temperature of the portion where the member 4 is in contact with the container 3 is lower than or equal to the softening temperature of the container 3, the sharpness is lost at the softening temperature of the container 3. Therefore, the softening temperature of the portion where the member 4 contacts the container 3 is required to be significantly higher than the softening temperature of the container 3. Since metal has a remarkably higher softening temperature than plastic, the above conditions can be satisfied.

  As a metal that can be used for the member 4, it is desirable to use a metal that is usually used as a structure, such as iron, copper, and aluminum. In addition, an alloy that can be used as a structure, such as stainless steel and duralumin, may be used instead of a single metal.

  In the gas adsorption device 1 of the present embodiment, at least a part of the member 4 is a spring.

  In order for the member 4 to continue to apply a pressing force (piercing force) to the container 3, a part of the elastic body is constituted by an elastic body, and a phenomenon in which a force is applied to the container 3 by applying the force and releasing the force. Available. Since the elastic body is a spring, the force applied to the container 3 can be easily controlled.

  Further, in the gas adsorption device 1 of the present embodiment, the member 4 is provided outside the container 3 (provided outside the container 3).

  Since the member 4 that applies a pressing force (piercing force) to the container 3 is provided outside the container 3, the pressing force (piercing force) applied to the container 3 acts from the outside to the inside of the container 3. Therefore, since the outside of the container 3 is filled with an object that is difficult to deform, it can be easily penetrated even when it is difficult to generate a through-hole by pressing force (piercing force) from the inside to the outside of the container 3. Holes can be created.

  In the gas adsorption device 1 of the present embodiment, the gas adsorbent 2 is made of CuZSM-5.

  CuZSM-5 is very highly active, so any contact with air before use should be avoided. By raising the temperature of the container 3 after installation in the vacuum device 6, it is possible to prevent contact with air in the process of installation in the vacuum device 6.

(Embodiment 2)
FIG. 5 is a side view before switching the gas adsorption device according to the second embodiment of the present invention, and FIG. 6 is a side view after switching the gas adsorption device according to the second embodiment.

  As shown in FIGS. 5 and 6, the gas adsorption device 1 of the present embodiment includes a gas adsorbent 2 made of CuZSM-5, and a gas made of polyethylene which is a cylindrical and thermoplastic material closed at both ends. A container 3 that prevents the gas adsorbent 2 from adsorbing an external gas until the through-hole is formed by enclosing the adsorbent 2 in a vacuum state, and a metal made of a tip having a pointed tip. It is compressed in the length direction by a coil spring, and both ends are urged to apply a pressing force (piercing force) from the inside to the outside of the container 3 on the cylindrical inner peripheral surface of the container 3, and the cylinder is placed inside the container 3. For the container 3 which is provided in the radial direction of the inner peripheral surface of the shape and is not softened, a stab force is continuously applied to the container 3 with a force that does not penetrate the container 3, and the softened container 3 is softened at a predetermined temperature rise. On the other hand, the container 3 is deformed by a piercing force to make a through hole in the container 3. A cylindrical inner peripheral surface on one end side of the member 4 and a bottomed cylindrical shape having one diameter larger than that of the container 3 and containing the container 3 and having a pointed tip at the tip of the member 4 is A cylindrical inner peripheral surface on the other end side of the member 4 is spaced from the cylindrical outer peripheral surface of the container 3 so as to be in close contact with the cylindrical outer peripheral surface of the container 3, and the other end of the member 4 is the container. 3 is prevented from being deformed, and when the protruding portion with the sharp tip of the member 4 pierces the container 3 from the inside, the protruding portion with the sharp tip of the member 4 does not damage the object outside the gas adsorption device 1. And a metal protective material 9 to be protected.

  Regarding the gas adsorption device 1 of the present embodiment configured as described above, the operation and action of the gas adsorption device 1 will be described below.

  In addition, the manufacturing method of the vacuum heat insulating material 6 in this Embodiment, etc. are the same as that of Embodiment 1.

  Initially, the gas adsorbent 2 is vacuum-sealed in a closed space formed by a plastic (polyethylene) container 3. The gas adsorption device 1 is stored at a temperature near room temperature. One end of the member 4 having a pointed protrusion in the member 4 is pierced, but the container 3 is not softened because the gas adsorption device 1 is stored at a temperature near room temperature. Due to the relationship between the strength of the container 3 and the strength of the piercing force of the member 4, the member 4 has not yet opened a through-hole in the container 3, and the container 3 is kept in a sealed state, and the gas adsorption in the container 3 The material 2 does not adsorb the gas outside the container 3 and the adsorption force is not deteriorated. Therefore, when the gas adsorption device 1 is not used, even if the gas adsorption device 1 is left in the atmosphere for a long time, the gas adsorbent 2 does not touch the gas outside the container 3 and does not deteriorate the gas adsorbent 2. The gas adsorption device 1 containing the gas adsorbent 2 can be stored in the atmosphere for a long time.

  When the vacuum heat insulating material 6 is heated after the gas adsorbing device 1 and the core material 7 are sealed under reduced pressure in the outer cover material 8, heat is transferred to the gas adsorbing device 1 through the outer cover material 8 and the core material 7. The temperature will also rise. When the temperature of the container 3 is raised to a predetermined temperature (the temperature at which the container 3 softens) or higher, the container 3 is made of a thermoplastic material (thermoplastic plastic), and therefore softens as the temperature rises. However, the container 3 is deformed by the protective material 9 and is limited to a part where the sharp protrusion of the member 4 applies a piercing force. Eventually, the deformation rate of the deformed portion of the container 3 is increased, a through hole is formed in the container 3, and the gas adsorbing material 2 in the container 3 can adsorb the gas in the jacket material 8 outside the container 3. become. At this time, the pointed protrusion of the member 4 breaks through the container 3 from the inside, but cannot break through the metal protective material 9 outside the container 3, and the pointed protrusion of the member 4 is gas. The outer covering material 8 outside the adsorption device 1 is not damaged.

  With the mechanism as described above, the gas adsorbent 2 can be applied to the vacuum heat insulating material 6 without being deteriorated in both cases of storage and application to the vacuum heat insulating material 6, and the internal pressure can be reduced. It is possible to maintain the degree of vacuum over a long period of time.

  The gas adsorbing device 1 according to the present embodiment includes a gas adsorbing material 2 and a container made of a thermoplastic material and containing the gas adsorbing material 2 to prevent the gas adsorbing material 2 from adsorbing an external gas until a through hole is formed. 3 and the container 3 before being softened, the piercing force is continuously applied to the container 3 with a force that does not penetrate the container 3, and the container 3 that has been softened at a predetermined temperature rise is applied with the piercing force. And a member 4 that opens a through-hole in the container 3 by deforming.

  In the above configuration, the member 4 applies a piercing force to the container 3 before being softened, but the member 4 opens a through hole in the container 3 due to the relationship between the strength of the container 3 and the piercing force of the member 4. The container 3 is kept in a sealed state, and the gas adsorbent 2 in the container 3 does not adsorb the gas outside the container 3 and the adsorption power is not deteriorated. For this reason, when the gas adsorbing device 1 is not used, the gas adsorbing device 1 containing the gas adsorbing material 2 can be stored for a long time without deteriorating the gas adsorbing material 2.

  Moreover, when using the gas adsorption device 1, the temperature of the gas adsorption device 1 is raised more than predetermined temperature. When the temperature of the container 3 is raised to a predetermined temperature (the softening temperature of the container) or higher, the container 3 is made of a thermoplastic material and softens as the temperature rises, and the container 3 is deformed by the piercing force of the member 4, and eventually, A through hole is formed in the container 3, and the gas adsorbent 2 in the container 3 can adsorb the gas outside the container 3.

  As described above, in the gas adsorption device 1 according to the present embodiment, the gas adsorbent 2 in the container 3 exists from the state where the space in which the gas adsorbent 2 in the container 3 exists is blocked from the space outside the container 2. Since the change to the state in which the space to be communicated with the space outside the container 3 (releasing release of the gas adsorbent 2) occurs due to a change in the predetermined temperature, when applying the gas adsorbent 2 to the vacuum device 6, the temperature It is not necessary to control other factors, and productivity can be improved. Further, since the gas adsorption device 1 can be switched by controlling the temperature after application to the vacuum device 6, it is possible to switch even when it is impossible to apply force from outside the housing of the vacuum device 6. is there.

  In the gas adsorption device 1 according to the present embodiment, since the gas adsorption device 1 is switched depending on the temperature, it is only necessary to control the ambient temperature when the vacuum adsorption device 6 is installed, and the gas adsorption device 1 can be switched in any situation. . Therefore, even when the vacuum device 6 casing is not deformed and a force cannot be applied from the outside, it can be switched.

  Moreover, the gas adsorption | suction device 1 is installed in the vacuum equipment 6, and the switching after sealing the vacuum equipment 6 is possible. Accordingly, gas that does not need to be adsorbed, that is, gas outside the vacuum device 6 is not adsorbed, and deterioration of the gas adsorbent during storage and application to the vacuum device 6 can be prevented.

  The more highly active the gas adsorbent 2 is and the larger the specific surface area is, the more severe the handling conditions are. That is, in order to maintain the activity of the gas adsorbent 2, the time that can be contacted with air is shortened, and the pressure that can be contacted is also reduced.

  Therefore, the gas adsorbent 2 has a problem of deterioration when it is installed in the vacuum device 6 in addition to the storage. Therefore, when installing the gas adsorbent 2 in the vacuum device 6, it is necessary to communicate after the space in which the gas to be adsorbed, that is, the pressure inside the vacuum device 6 is as low as possible.

  As an example of the vacuum device 6, when the gas adsorbent 2 is applied to the vacuum heat insulating material 6, the core material 7 and the gas adsorbent 2 inserted into the gas barrier outer covering material 8 are installed in the chamber, and then the chamber , And the inside of the jacket material 8 is decompressed, and then the opening of the jacket material 8 is sealed.

  At this time, the pressure in the chamber is reduced by a vacuum pump. In the normal pressure region, that is, before vacuum sealing, the pressure can be reduced by either the pump or the gas adsorbent 2. On the other hand, in the low pressure region, that is, inside the jacket material 8 after vacuum sealing, there is a gas that cannot be decompressed by the vacuum pump, a gas that enters through the jacket material after vacuum sealing, and a gas that is generated from the core material 7. However, these can be adsorbed only by the gas adsorbent 2. Therefore, in order to fully demonstrate the capability of the gas adsorbent 2 inside the envelope material 8 after vacuum sealing, it is necessary to communicate with the outside after vacuum sealing.

  Since the vacuum apparatus 6 is sealed after the gas adsorbent 2 is installed inside, it is difficult to switch the gas adsorption device 1 by applying a force directly from the outside. Therefore, it is desirable to switch the gas adsorbent 1 by remote operation. As a means for switching by remote operation, a method of releasing the sealing of the gas adsorption device 1 by a temperature change of the gas adsorption device 1 is effective.

  After the vacuum apparatus 6 is sealed, the temperature of the internal gas adsorption device 1 is also changed by changing the temperature, and can be switched by reaching a predetermined temperature. In the present embodiment, as a method of switching by temperature change, a piercing force is applied to the container 3 by the member 4 in advance, and the container 3 is not deformed because the strength of the container 3 is superior in a low temperature state, but is softened by the temperature rise of the container 3. Thus, a method of generating a through hole by deforming is adopted.

  By using the method as described above, the gas adsorbing device 1 can be deformed without applying a force from the outside, the sealing performance is released, and the adsorption capability can be exhibited.

  Furthermore, since the gas adsorption device 1 is switched after the vacuum apparatus 6 is sealed, if there is a gas that is difficult to be adsorbed by the gas adsorbent 2, it remains in the vacuum apparatus 6 after the vacuum seal. Therefore, the inside of the gas adsorption device 1 needs to be evacuated in advance, and its allowable pressure is 100 Pa or less.

Further, the container 3 is excellent in gas barrier properties, and the gas permeability is preferably 10 ⁴ [cm ³ / m ² · day · atm] or less, more preferably 10 ³ [cm ³ / m ² · day · atm]. It becomes the following.

  Moreover, as for the gas adsorption | suction device 1 of this Embodiment, the container 3 consists of plastics.

  The vacuum device 6 maintains its shape against atmospheric pressure due to the strength of the components. For this reason, when a part of the vacuum device 6 becomes higher than the softening temperature, it is deformed by the atmospheric pressure. Therefore, it is essential that the softening temperature of the container 3 is lower than the softening temperature of the components of the vacuum device 6. Since plastic has a remarkably lower softening temperature than thermoplastic materials such as metal and glass, it is easy for the softening temperature to be lower than the components of the vacuum device 6. Therefore, the freedom degree of the structure of the vacuum equipment 6 can be improved by making the container 3 into a plastic.

  Moreover, as for the gas adsorption | suction device 1 of this Embodiment, the container 3 consists of polyethylene.

  The gas adsorbent 2 generally has a high affinity with water. Therefore, when the gas inside the container 3 contains a lot of moisture, the amount of gas that can be adsorbed is reduced by adsorbing water. In order to selectively adsorb gas, measures such as covering the periphery of the gas adsorbent 2 with a moisture adsorbent and reducing the amount of water contained in the gas reaching the gas adsorbent 2 are required.

  On the other hand, when the moisture contained in the gas inside the container 3 is small, it is not necessary to take special measures.

  Here, since the moisture permeability of polyethylene is small among thermoplastic resins, it is possible to suppress the intrusion of moisture into the container 3 and reduce the amount of moisture inside the container 3.

  Therefore, it is not necessary to cover the periphery of the gas adsorbing material 2 with the moisture adsorbing material, and the cost for producing the gas adsorbing device 1 can be reduced.

  Further, in the gas adsorption device 1 of the present embodiment, at least a part of the member 4 is made of metal.

  The temperature at which the through hole is generated in the container 3 is desirably as low as possible in order to reduce the temperature applied to the vacuum device 6. For this reason, it is desirable to increase the force applied per unit area of the container 3 so that a through hole is generated even if the degree of softening of the container 3 is small.

  Increasing the force applied to the unit area of the container 3 is achieved by reducing the contact area between the member 4 that applies a pressing force (piercing force) to the container 3 and the container 3. In order to reduce the contact area between the member 4 that applies a pressing force (piercing force) to the container 3 and the container 3, the portion where the member 4 contacts the container 3 may have a sharp shape (having a sharp tip).

  At this time, when the softening temperature of the portion where the member 4 is in contact with the container 3 is lower than or equal to the softening temperature of the container 3, the sharpness is lost at the softening temperature of the container 3. Therefore, the softening temperature of the portion where the member 4 contacts the container 3 is required to be significantly higher than the softening temperature of the container 3. Since metal has a remarkably higher softening temperature than plastic, the above conditions can be satisfied.

  As a metal that can be used for the member 4, it is desirable to use a metal that is usually used as a structure, such as iron, copper, and aluminum. In addition, an alloy that can be used as a structure, such as stainless steel and duralumin, may be used instead of a single metal.

  In the gas adsorption device 1 of the present embodiment, at least a part of the member 4 is a spring.

  In order for the member 4 to continue to apply a pressing force (piercing force) to the container 3, a part of the elastic body is constituted by an elastic body, and a phenomenon in which a force is applied to the container 3 by applying the force and releasing the force. Available. Since the elastic body is a spring, the force applied to the container 3 can be easily controlled.

  Further, in the gas adsorption device 1 of the present embodiment, the member 4 is provided inside the container 3 (provided inside the container 3).

  When a sufficient space cannot be secured inside the vacuum device 6, the gas adsorption device 1 is required to be as small as possible. By enclosing the member 4 that applies a pressing force (piercing force) to the container 3 in the container 3, the gas adsorption device 1 can be reduced in size. Furthermore, since a pressing force (piercing force) is applied to the container 3 from the inside, it is easy to fix the member 4 to the container 3, the structure can be simplified, and the cost can be reduced.

  An example of a simplified structure and a technique for applying a pressing force (piercing force) is to enclose the spring member 4 in the container 3 in a contracted state. Since the spring continues to apply a force to be stretched to the container 3, the spring softens when the temperature of the container 3 rises, and a through hole is generated in the container 3.

  In the gas adsorption device 1 of the present embodiment, the gas adsorbent 2 is made of CuZSM-5.

  CuZSM-5 is very highly active, so any contact with air before use should be avoided. By raising the temperature of the container 3 after installation in the vacuum device 6, it is possible to prevent contact with air in the process of installation in the vacuum device 6.

Example 1
Example 1 is a specific example of the first embodiment. The same components as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the gas adsorption device 1 of Example 1, powdered CuZSM-5 was used as the gas adsorbent 2. A container 3 made of polyethylene terephthalate was used. The shape of the container 3 is a cylindrical shape with both ends closed with a thickness of 1 mm, an inner diameter of 10 mm, and a length of 100 mm. The support 5 is made of stainless steel and has a cylindrical shape with a length of 10 mm, an inner diameter of 9 mm, and an outer diameter of 10 mm. A hole with a diameter of 2 mm is opened on the side surface (side wall) and is inscribed in the container 3.

  The member 4 for applying a pressing force (piercing force) to the container 3 is a substantially C-shaped clip made of stainless steel, and one end of a portion in contact with the container 3 is a pointed protrusion, and this protrusion is It is attached so as to overlap the hole of the support 5. The container 3 contains powdered CuZSM-5 as the gas adsorbent 2 and is covered with a moisture adsorbent made of calcium oxide to prevent deterioration due to water.

  The vacuum heat insulating material 6 was produced using the gas adsorption device 1 comprised as mentioned above. As the core material 7 of the vacuum heat insulating material 6, a glass fiber aggregate that was thermoformed at 400 ° C. while being pressed and formed into a plate shape was used. The jacket material 8 is a plastic laminate film, which is laminated in the order of 15 μm thick nylon, 25 μm thick nylon, 6 μm thick aluminum, and 50 μm thick low density polyethylene film.

  The core material 7 and the gas adsorbing device 1 were inserted into the envelope material 8 which was sealed in three directions in advance and placed in a vacuum chamber, and after reducing the pressure to 100 Pa, the opening of the envelope material 8 was sealed. At room temperature, the container 3 of the gas adsorption device 1 has sufficient strength, so that even when atmospheric pressure is applied, deformation is small and no through hole is generated.

  When the vacuum heat insulating material 6 is heated to 70 ° C. and left for 2 hours, the container 3 of the gas adsorption device 1 heated by heat conduction is softened. Since a pressing force (piercing force) that presses the protrusion is applied in advance to the portion that overlaps the hole of the support body 5, it cannot withstand this force due to softening, and a through hole is generated. As a result, the gas inside the jacket material 8 can be adsorbed.

  When the pressure inside the vacuum heat insulating material 6 is measured, it is 5 Pa, and it can be seen that the internal pressure of the jacket material 8 has decreased as a result of the adsorption by the gas adsorbent 2.

  Further, the internal pressure after the vacuum heat insulating material 6 is stored in the atmosphere for 1 month is 5 Pa, and the gas adsorbing material 2 CuZSM-5 adsorbs the gas entering through the outer covering material 8. Recognize.

(Example 2)
Example 2 is a specific example when the material of the container 3 of the first embodiment is changed. The same components as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the gas adsorption device 1 of Example 2, powdery CuZSM-5 was used as the gas adsorbent 2. A container made of polyethylene was used as the container 3. The shape of the container 3 is a cylindrical shape with both ends closed with a thickness of 1 mm, an inner diameter of 10 mm, and a length of 100 mm. The support 5 is made of stainless steel and has a cylindrical shape with a length of 10 mm, an inner diameter of 9 mm, and an outer diameter of 10 mm. A hole with a diameter of 2 mm is opened on the side surface (side wall) and is inscribed in the container 3.

  The member 4 for applying a pressing force (piercing force) to the container 3 is a substantially C-shaped clip made of stainless steel, and one end of a portion in contact with the container 3 is a pointed protrusion, and this protrusion is It is attached so as to overlap the hole of the support 5. Since polyethylene has a low water vapor permeability, deterioration of the CuZSM-5 that is the gas adsorbent 2 can be reduced without using a water adsorbent.

  The vacuum heat insulating material 6 was produced using the gas adsorption device 1 comprised as mentioned above. As the core material 7 of the vacuum heat insulating material 6, a glass fiber aggregate that was thermoformed at 400 ° C. while being pressed and formed into a plate shape was used. The jacket material 8 is a plastic laminate film, which is laminated in the order of 15 μm thick nylon, 25 μm thick nylon, 6 μm thick aluminum, and 50 μm thick low density polyethylene film.

  The core material 7 and the gas adsorbing device 1 were inserted into the envelope material 8 which was sealed in three directions in advance and placed in a vacuum chamber, and after reducing the pressure to 100 Pa, the opening of the envelope material 8 was sealed. At room temperature, the container 3 of the gas adsorption device 1 has sufficient strength, so that even when atmospheric pressure is applied, deformation is small and no through hole is generated.

  When the vacuum heat insulating material 6 is heated to 105 ° C. and left for 2 hours, the container 3 of the gas adsorption device 1 heated by heat conduction is softened. Since a pressing force (piercing force) that presses the protrusion is applied in advance to the portion that overlaps the hole of the support body 5, it cannot withstand this force due to softening, and a through hole is generated. As a result, the gas inside the jacket material 8 can be adsorbed.

  When the pressure inside the vacuum heat insulating material 6 is measured, it is 5 Pa, and it can be seen that the internal pressure of the jacket material 8 has decreased as a result of the adsorption by the gas adsorbent 2.

  Further, the internal pressure after the vacuum heat insulating material 6 is stored in the atmosphere for 1 month is 5 Pa, and the gas adsorbing material 2 CuZSM-5 adsorbs the gas entering through the outer covering material 8. Recognize.

(Example 3)
Example 3 is a specific example when the material of the container 3 according to the second embodiment is changed. The same components as those of the second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the gas adsorption device 1 of Example 3, powdery CuZSM-5 was used as the gas adsorbent 2. A container 3 made of polyethylene terephthalate was used. The shape of the container 3 is a cylindrical shape with both ends closed with a thickness of 1 mm, an inner diameter of 10 mm, and a length of 100 mm.

  The container 3 contains CuZSM-5, which is a gas adsorbent 2, and is covered with a moisture adsorbent made of calcium oxide to prevent deterioration due to water. Further, a compression spring member 4 having a protruding portion on one side is included inside the container 3, and its elongation is restricted by contacting the container 3, and the container 3 has a piercing force from the inside to the outside. Is working.

  The vacuum heat insulating material 6 was produced using the gas adsorption device 1 comprised as mentioned above. As the core material 7 of the vacuum heat insulating material 6, a glass fiber aggregate that was thermoformed at 400 ° C. while being pressed and formed into a plate shape was used. The jacket material 8 is a plastic laminate film, which is laminated in the order of 15 μm thick nylon, 25 μm thick nylon, 6 μm thick aluminum, and 50 μm thick low density polyethylene film.

  The core material 7, the gas adsorbing device 1, and the protective material 9 were inserted into the envelope material 8 that had been sealed in three directions in advance to form a bag, and was placed in a vacuum chamber and reduced in pressure to 100 Pa and sealed. At this time, the protective material 9 is installed so as to be between the container 3 and the jacket material 8.

  At room temperature, the container 3 of the gas adsorption device 1 has sufficient strength, so that even when atmospheric pressure is applied, deformation is small and no through hole is generated. When the vacuum heat insulating material 6 is heated to 70 ° C. and left for 2 hours, the container 3 of the gas adsorption device 1 heated by heat conduction is softened. Since the piercing force of the member 4 is acting on the container 3 from the inside to the outside, it becomes impossible to withstand this force due to softening, and a through hole is generated.

  As a result, the gas inside the jacket material 8 can be adsorbed. Furthermore, since the protective material 9 is provided between the container 3 and the jacket material 8, the piercing force of the member 4 does not act on the jacket material 8, and deterioration (breakage) of the jacket material 8 can be prevented.

  When the pressure inside the vacuum heat insulating material 6 is measured, it is 5 Pa, and it can be seen that the internal pressure of the jacket material 8 has decreased as a result of the adsorption by the gas adsorbent 2.

  Further, the internal pressure after the vacuum heat insulating material 6 is stored in the atmosphere for 1 month is 5 Pa, and the gas adsorbing material 2 CuZSM-5 adsorbs the gas entering through the outer covering material 8. Recognize.

  The gas adsorbing device according to the present invention can handle a highly active gas adsorbing material without deteriorating under atmospheric pressure. Applicable to vacuum equipment.

Side view before switching of gas adsorption device in Embodiment 1 of the present invention Sectional drawing before switching of gas adsorption device in the same embodiment Sectional view after switching the gas adsorption device in the same embodiment Schematic sectional view of a vacuum heat insulating material containing the gas adsorption device of the same embodiment Side view before switching of gas adsorption device according to Embodiment 2 of the present invention Side view after switching of gas adsorption device in the same embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gas adsorption device 2 Gas adsorption material 3 Container 4 Member 5 Support body

Claims (9)

For a gas adsorbing material, a container made of a thermoplastic material, containing the gas adsorbing material and preventing the gas adsorbing material from adsorbing external gas until a through hole is formed, and the container before being softened A member that continues to apply a piercing force to the container with a force that does not penetrate the container, and that deforms the container with the piercing force to open a through hole in the container for the container that has been softened by a predetermined temperature rise. And a gas adsorption device. The gas adsorption device according to claim 1, wherein the container is made of plastic. The gas adsorption device according to claim 2, wherein the container is made of polyethylene terephthalate. The gas adsorption device according to claim 2 , wherein the container is made of polyethylene. The gas adsorption device according to any one of claims 1 to 4, wherein at least a part of the member is made of metal. The gas adsorption device according to any one of claims 1 to 5, wherein at least a part of the member is a spring. The gas adsorption device according to claim 5 or 6, wherein the member is provided in a container. The gas adsorption device according to claim 5 or 6, wherein the member is provided outside the container. The gas adsorption device according to any one of claims 1 to 8, wherein the gas adsorbent is made of CuZSM-5.

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