JP2007113748A - Method of manufacturing heat insulating wall, heat insulating unit, and heat insulating material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate manufacture with excellent reliability and handling performance in a method of manufacturing a heat insulating wall. <P>SOLUTION: The method of manufacturing the heat insulating wall is a method of forming the heat insulating wall from a heat insulating material 100, an external wall 201 and an internal wall 202 by covering a vacuum heat insulating material 103 with an elastic covering material 102 to store them in an outer bag 101, reducing pressure in the outer bag 101 and sealing the outer bag 101 in the compressed state of the covering material 102 to form the heat insulating material 100, installing the heat insulating material 100 between the external wall 201 and the internal wall 202 and releasing the sealed state of the outer bag 101 of the heat insulating material 100, thereby restoring the covering material 102 to clamp the heat insulating material 100 between the external wall 201 and the internal wall 202. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a heat insulating wall, a heat insulating unit, and a heat insulating material, for example, a method for manufacturing a heat insulating wall used in a heat insulating portion of a household appliance, a house, a vehicle, or the like including a refrigerator, and a heat insulating unit and a heat insulating material. Is preferred.

  From the viewpoint of preventing global warming, it is desired to improve the energy saving performance of home appliances, houses, vehicles, and the like. In recent years, in order to save energy, it has been proposed to employ a vacuum heat insulating material in heat insulating walls of home appliances and houses to reduce the amount of heat leakage of the heat insulating walls.

  An example of a general vacuum heat insulating material will be specifically described with reference to FIG. In this vacuum heat insulating material, a core material 1 made of powder obtained by pulverizing a rigid urethane foam and a non-woven fabric 2 having air permeability are vacuumed at a predetermined degree of vacuum in jacket materials 3 and 4 made of a laminate film. It is configured by sealing. The outer covering material 3 is a plastic laminate film made of a polyethylene terephthalate resin for the outermost layer 3a, an aluminum foil having a gas barrier property for the intermediate layer 3b, and a high-density polyethylene resin that can be thermally welded to the innermost layer 3c. The outer cover material 4 is a plastic laminate film made of nylon resin for the outermost layer 4a, an aluminum vapor deposition layer having gas barrier properties for the intermediate layer 4b, and a high-density polyethylene resin that can be thermally welded to the innermost layer 4c. The innermost layer 3c of the outer jacket material 3 and the innermost layer 4c of the outer jacket material 4 are thermally welded by the ear portion 5 to form a bag shape.

  The plastic laminate films 3 and 4 made of polyethylene terephthalate resin, high-density polyethylene resin, nylon resin, or the like have a thermal conductivity larger than that of the vacuum-sealed core part 1, so that the thickness is reduced to about 150 μm or less. Thus, the heat conduction from the portion is set to be small.

  In particular, the aluminum foil 3b and the aluminum vapor deposition layer 4b, which are in the plastic laminate films 3 and 4 and are responsible for gas barrier properties, are themselves heat-conducting materials. The thickness of the aluminum foil 3b and the aluminum vapor deposition layer 4b is usually set to about 15 μm or less so as not to deteriorate the heat insulating performance as a material.

  As a conventional example of the heat insulation wall using a vacuum heat insulating material, there exist some which are proposed by Unexamined-Japanese-Patent No. 2000-248653 (patent document 1) and Unexamined-Japanese-Patent No. 2003-14368 (patent document 2), for example.

  The one described in Patent Document 1 is at least relative to a vacuum insulator, a resin foam such as a rigid urethane foam covering at least one surface of the vacuum insulator, and a heat insulator made of a vacuum insulator and a resin foam. The amount of heat leakage of the heat insulating wall is reduced by clearly specifying the position of the vacuum heat insulating material disposed between the face materials on at least one surface of the face material. At the same time, the vacuum insulator is not broken even when nailing or cutting.

  Moreover, the thing of patent document 2 is equipped with a hard urethane foam and a vacuum heat insulating material between an outer box and an inner box, and the coverage of a vacuum heat insulating material exceeds 50% with respect to the surface area of an outer box, and 80 % Or less, and a uniform urethane layer is formed on the front and back surfaces of the vacuum heat insulating material, and the distance between the vacuum heat insulating material and the outer box is smaller than the distance between the vacuum heat insulating material and the inner box. The energy saving effect is enhanced while maintaining the strength and without causing deterioration of the heat insulation performance.

JP 2000-248653 A JP 2003-14368 A

  As described above with reference to FIG. 11, the vacuum heat insulating material is formed by vacuum-sealing a core material having a predetermined thickness in a jacket material made of a laminate film having gas barrier properties. Since the material itself has thermal conductivity, its thickness is set thin in order to reduce heat conduction from the portion. Therefore, as in Patent Documents 1 and 2, when a heat insulating wall is formed by installing a vacuum heat insulating material together with a hard urethane foam between an outer wall (outer box) and an inner wall (inner box), the vacuum heat insulating material is transported. In the unlikely event that other vacuum insulation materials or other parts or equipment come into contact with the vacuum insulation material during storage, the outer insulation material of the vacuum insulation material will be damaged. It deteriorated, and after a long period of time, the vacuum degree of the vacuum heat insulating material was lowered, and there was a fear that the heat insulation performance was lowered. For this reason, it became a subject to make the handleability and reliability of a vacuum heat insulating material compatible.

  Moreover, in the heat insulation wall of patent document 1, 2, after arrange | positioning a vacuum heat insulating material between an outer wall (outer box) and an inner wall (inner box), a vacuum heat insulating material, an outer wall (outer box), and an inner wall (inner box) There was a problem that hard urethane foam had to be filled in the gaps.

  A first object of the present invention is to provide a method for manufacturing a heat insulating wall that is excellent in reliability and handleability and is easy to manufacture.

  The second object of the present invention is to provide a heat insulating material and a heat insulating unit excellent in reliability and handleability.

The first aspect of the present invention for achieving the first object described above is to cover the vacuum heat insulating material with an elastic covering material and store it in the outer bag, decompress the inside of the outer bag, and In the compressed state, the outer bag is sealed to form a heat insulating material, and the heat insulating material is installed between the outer wall and the inner wall, and the outer bag of the heat insulating material is released from the sealing to It is a manufacturing method of the heat insulation wall which makes it restore | restore and clamps the said heat insulating material between the said outer wall and the said inner wall, and forms a heat insulating wall from this heat insulating material, the said outer wall, and the said inner wall.
There is.

  Further, a second aspect of the present invention for achieving the second object described above is a heat insulating unit comprising an outer wall, an inner wall, and a heat insulating material installed between the outer wall and the inner wall. The heat insulating material includes a vacuum heat insulating material, a covering material that covers the vacuum heat insulating material and has elasticity, and an outer bag that covers the covering material that covers the vacuum heat insulating material.

A more preferable specific configuration example in the second aspect of the present invention is as follows.
(1) The vacuum heat insulating material is formed in a panel shape including a panel-shaped core material and a jacket material that wraps the core material and evacuates the inside including the core material, and the covering material is It is installed so as to cover both sides of the flat part of the vacuum heat insulating material.
(2) In the above (1), the covering material and the outer bag are formed wider than a size including an ear portion formed around the vacuum heat insulating material to cover the ear portion.
(3) In (2), a reinforcing member having a puncture resistance against a nail, a screw or the like is installed between the vacuum heat insulating material and the covering material.

  A third aspect of the present invention for achieving the second object described above is a heat insulating unit comprising an outer wall, an inner wall, and a heat insulating material installed between the outer wall and the inner wall. The heat insulating material includes a vacuum heat insulating material, a covering material that covers the vacuum heat insulating material and has elasticity, and an outer bag that covers the covering material that covers the vacuum heat insulating material. It is comprised with the fiber polymer which consists of an inorganic fiber or an organic fiber, and the said heat insulating material is installed so that a both-sides plane part may contact | abut to the said outer wall and the said inner wall by the elasticity of the said coating | covering material.

A more preferable specific configuration example in the third aspect of the present invention is as follows.
(1) The covering material is formed of a material having sound insulation and sound absorption properties such as butyl rubber and glass wool.

  In addition, the fourth aspect of the present invention for achieving the second object described above includes a vacuum heat insulating material, a covering material that covers the vacuum heat insulating material and has elasticity, and the coating that covers the vacuum heat insulating material. And an outer bag covering the material.

A more preferable specific configuration example in the fourth aspect of the present invention is as follows.
(1) The vacuum heat insulating material is formed in a panel shape including a panel-shaped core material and an outer jacket material that wraps the core material and evacuates the inside including the core material, and the covering material is It is installed so that the whole plane part of the said vacuum heat insulating material may be covered from both sides.
(2) The covering material is made of a fiber polymer made of inorganic fiber or organic fiber, and the outer bag is housed in a state where the inside is decompressed and the covering material is compressed and sealed.

  ADVANTAGE OF THE INVENTION According to this invention, it can provide the manufacturing method of the heat insulation wall which is excellent in reliability and handleability, and is easy to manufacture.

  Moreover, according to this invention, the heat insulating material and heat insulation unit excellent in reliability and handleability can be provided.

Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. The same reference numerals in the drawings of the respective embodiments indicate the same or equivalent components, and are basically the same as those in the first embodiment except for the points described in the description of the respective embodiments.
In addition, this invention includes making it more effective by combining each embodiment suitably as needed.
(First embodiment)
A first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a sectional view of a heat insulating material according to the first embodiment of the present invention.

  The heat insulating material 100 covers the vacuum heat insulating material 103 and the vacuum heat insulating material 103, and has elasticity including flexibility and resilience in itself, and can be in the state shown in FIG. 2 is configured by a covering material 102 that can be restored to the state of FIG. 2 and a bag 101 that covers the covering material 102. The covering material 102 has flexibility, resilience, and bendability.

  The vacuum heat insulating material 103 has a predetermined heat insulation performance by vacuum-sealing a core material 103f made of a fiber polymer such as inorganic fiber or organic fiber in a covering material 103d, 103e having gas barrier properties at a predetermined degree of vacuum. It is comprised so that it may have. The fiber polymer constituting the core material 103f may be formed of a fiber laminate in which a plurality of fiber layers such as inorganic fibers or organic fibers are stacked. The covering material 103d having a gas barrier property is, for example, a plastic laminate film made of a polyethylene terephthalate resin as an outermost layer, an aluminum foil having a gas barrier property as an intermediate layer, and a high-density polyethylene resin that can be thermally welded to the innermost layer. The jacket material 103e having a gas barrier property is, for example, a nylon resin as an outermost layer, an ethylene-vinyl alcohol copolymer resin having an aluminum vapor deposition layer having a gas barrier property as an intermediate layer, and a high-density polyethylene resin that can be thermally welded to the innermost layer. This is a plastic laminate film. The outer covering material 103d and the outer covering material 103e are formed in a bag shape by thermally welding the innermost layers thereof by the ear portion 103g.

  Here, the jacket materials 103d and 103e, which are plastic laminate films, have a higher thermal conductivity than the vacuum-sealed core material 103f. Therefore, the thickness is reduced to about 150 μm or less from the jacket materials 103d and 103e. Is set to reduce heat conduction. In particular, the aluminum foil and aluminum vapor deposition layer in the plastic laminate film, which is responsible for gas barrier properties, are themselves good heat conductors, so they suppress the deterioration of heat insulation performance due to heat bridges due to this good heat conductivity. As described above, the thickness of the aluminum foil or aluminum vapor deposition layer is set to about 15 μm or less.

  Therefore, when handling in the manufacturing process of the vacuum heat insulating material 103, or during transportation or storage after completion as a vacuum heat insulating material, if the vacuum heat insulating material 103 comes into contact with other parts, equipment, etc., it is thinly configured. The covering materials 103d and 103e are damaged, and the gas barrier property of the thin aluminum foil or aluminum vapor deposition layer may be deteriorated due to the damage.

  Further, the ear 103g of the vacuum heat insulating material 103 has a considerable rigidity because the plastic laminate film including the aluminum foil or the aluminum vapor deposition layer is doubled and welded as described above. However, if they come into contact with other vacuum heat insulating materials or other members, they may be damaged.

  Therefore, in this embodiment, the entire vacuum heat insulating material 103 including the ear portion 103g is covered with a covering material 102 having elasticity by itself so as to improve the contact resistance from other components. is there.

  In order to make it difficult for the rigid ear portion to come into contact with other members during handling of the vacuum heat insulating material, in the conventional example, as shown in FIG. 11, the ear portion 5 is attached to the surface of the main body of the vacuum heat insulating material. It was made to bend | fold so that it might closely_contact | adhere to the outer covering material 3. However, if this is done, the aluminum foil 3b or the aluminum vapor deposition layer 4b in the jacket materials 3 and 4 and the aluminum foil 3b or the aluminum vapor deposition layer 4b in the ear portion 5 are easily heat-bridged. There is a risk that the heat insulation performance of the will be reduced. Therefore, in this embodiment, as shown in FIG. 1, the ear portion 103 g is configured not to be bent on the surface of the vacuum heat insulating material 103. That is, the covering material 102 and the outer bag 101 are formed wider than the size including the ear portion 103g formed around the vacuum heat insulating material 103, and are configured to cover the ear portion 103g. With this configuration, it is possible to suppress a decrease in heat insulation performance due to the heat bridge.

  In addition, the contact force that the heat insulating material 100 receives during handling in the manufacturing process, during transportation after completion, and during storage varies depending on the size of the heat insulating material 100, the purpose of use, and the like. Therefore, the thickness of the covering material 102 shown in FIG. The lengths t2a, t3a, t4a, and t5a are desirably adjusted according to the purpose of use.

  The covering material 102 may be a material having a function of preventing damage to the vacuum heat insulating material 103 and the elasticity described above, but it is preferable to use a material having a predetermined function as required. For example, organic synthetic chemical fibers such as polyester and polypropylene or natural fibers such as cotton and wool can be used as long as they have heat insulation properties. In order to reduce the substance, inorganic fibers such as glass wool and rock wool are desirable. For example, butyl rubber foam or asbestos can be used as long as it has soundproofing properties, but inorganic fibers such as glass wool are desirable in consideration of organic substances and working environment.

  Further, the outer bag 101 covering the covering material 102 does not scatter or scatter the material constituting the covering material 102 when transporting or storing the heat insulating material 100 or during the compression process. The material is not particularly limited as long as it has a function of covering the covering material 102. For example, a synthetic resin such as polyethylene resin, a metal foil such as aluminum, or a natural material such as paper or rubber can be used. Further, as shown in FIG. 1, the upper sheet 101d and the lower sheet 101e are welded or bonded together at the peripheral edge 101g to form a bag shape, and the opening of the tubular material is closed to form a bag shape. Or a rubber balloon-like opening may be closed to form a bag. Note that the bag-shaped opening may be configured not to be sealed as long as the material constituting the covering material 102 can be prevented from scattering.

  According to the first embodiment, since the vacuum heat insulating material 103 is covered with the covering material 102 having elasticity to itself, even if other parts, equipment, etc. come into contact with the heat insulating material 100, The covering material covering the vacuum heat insulating material 103 absorbs the impact when it comes into contact with the elasticity of the covering material 102 itself, and the vacuum heat insulating material 103 itself is less damaged, and the heat insulating material 100 excellent in handleability is provided. Can be provided.

  Further, since the covering material 102 covering the vacuum heat insulating material 103 has a thickness capable of absorbing the ear portion 103g protruding from the core material 103f of the vacuum heat insulating material 103, the rigid ear portion 103g may protrude from the heat insulating material 100. It is possible to provide a heat insulating material with excellent handling properties. Further, since it is not necessary to fold the ear portion 103g back to the surface of the vacuum heat insulating material 103, it is possible to reduce the cost of the work to be turned back, and to provide a heat insulating material with less heat bridge between the ear portion 103g and the surface of the vacuum heat insulating material 103.

Further, when the inside of the outer bag 101 that forms the outer shell of the heat insulating material 100 including the vacuum heat insulating material 103 is deaerated and compressed, the outer size of the heat insulating material 100 itself can be reduced, so that the heat insulating material with improved transportability and storage property can be obtained. Can be provided.
(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS.

  FIG. 2 is a cross-sectional explanatory view of a main part of a heat insulating unit showing a second embodiment of the present invention. In FIG. 2, reference numeral 200 denotes a heat insulating unit configured to be installed in a heat insulating portion constituting a refrigerator, a freezer, a house, a warehouse, a freezer car, a vehicle, or the like. The heat insulating unit 200 is configured to reduce heat leakage between the outer wall 201 and the inner wall 202 by installing one or a plurality of heat insulating materials 100b between the outer wall 201 and the inner wall 202.

  The outer wall 201 and the inner wall 202 may also be used as outer boxes and inner boxes constituting a refrigerator or the like, or may be used as outer materials and interior materials for houses, vehicles, and the like.

  The heat insulating material 100 includes a vacuum heat insulating material 103, an elastic covering material 102, and an outer bag 101. The heat insulating material 100 and the outer wall 201 or the inner wall 202 are configured to be pressure-bonded to each other by the elasticity of the covering material 102 itself.

  The outer bag 101 is a film-like covering the covering material 102 so that the powder of the covering material 102 is not scattered around by handling during mounting when the covering material 102 is mounted between the outer wall 201 and the inner wall 202. It is a bag. The outer bag 101 may be removed from the heat insulating unit 200 after the heat insulating material 100 is attached between the walls 201 and 202. However, the outer heat insulating material 100 is removed when the refrigerator or a house or a vehicle is discarded. In order to make it easy to recycle, it is desirable to keep it installed in the heat insulating unit 200 as shown in FIG.

  Reference numeral 203 denotes a filler filled between the plurality of heat insulating materials 100. The material of the filler 203 is not particularly limited. For example, as long as it has adhesiveness, a hot melt adhesive or the like can be used. However, the foam itself has heat insulating properties and also has adhesiveness to the outer wall 201, the inner wall 202, and the heat insulating material 100. Polyurethane or the like is desirable.

  Reference numeral 204 denotes, for example, an acrylic resin adhesive that bonds the heat insulating material 100 to the outer wall 201 or the inner wall 202. Note that when the filler 203 and the adhesive 204 are made of the same material and the filler 203 is filled, at the same time, a part of the filler 203 is placed between the heat insulating material 100 and the outer wall 201 or with the heat insulating material 100. You may comprise so that it may pour and adhere between inner walls 202.

  As a method of mounting the heat insulating material 100 between the outer wall 201 and the inner wall 202, first, the outer wall 201 (or inner wall 202) is placed at a predetermined position, and the heat insulating material is placed at a predetermined position on the outer wall 201 (or inner wall 202). 100 b is installed, and then the inner wall 202 (or outer wall 201) is pressure-bonded and then the filler 203 and the adhesive 204 are injected.

  Depending on the product conditions and installation conditions to which the heat insulating material 100 is applied, the heat insulating material 100b may be inserted after the space between the outer wall 201 and the inner wall 202 is fixed to a predetermined dimension (for example, T20) shown in FIG.

  An example of the installation method of the heat insulating material in this case will be described with reference to FIG. FIG. 3 is a cross-sectional view of a manufacturing process for explaining an example of a method for manufacturing the heat insulating unit of FIG. For simplicity of explanation, the above-described heat insulating material 100 of FIG. 1 is compressed as shown in FIG. 3 to be described later and inserted between the outer wall 201 and the inner wall 202 and then attached as shown in FIG. It is assumed that

  The heat insulating material 100 is formed by compressing the thickness dimension T11 of FIG. 1 to a T13 dimension that is smaller than the T20 dimension so that it can be easily inserted into the distance T20 dimension between the outer wall 201 and the inner wall 202. Yes (T13 <T20 <T11). That is, the covering material 102 is compressed into the state shown in FIG. 3 so as to be t2c and t3c thinner than the thickness dimensions t2a and t3a in FIG. 1 due to the elasticity of the covering material 102 itself.

  Then, as shown in FIG. 3, the heat insulating material 100 compressed to the T13 size is attached to a predetermined position between the outer wall 201 and the inner wall 202, and then the outer bag 101 covering the covering material 102 is opened to open the covering material 102. The thickness T13 is increased by its own restoring force, and the outer wall 201 and the inner wall 202 are pressure-bonded so as to push the space between the walls of the T20 dimension so as to be mounted as shown in FIG. It is configured.

  In addition, as an example of a method for compressing the thickness dimension of the heat insulating material 100, a method in which a mechanical pressure is applied to the heat insulating material 100 and the thickness is temporarily reduced may be used. The method of degassing the inside is advantageous in handling and transportation because the heat insulating material 100 itself is downsized. That is, in the heat insulating material 100 having the thickness T11 of FIG. 1, the covering material 102 containing the vacuum heat insulating material 103 is inserted into the outer bag 101, and then the inside of the outer bag 101 is deaerated and compressed, whereby the covering material 102 is obtained. A method of sealing the opening of the outer bag 101 after making the thickness T13 shown in FIG. 3 by utilizing its own elasticity is desirable.

  If the deaeration force is increased by a method of degassing and compressing the inside of the outer bag 101, for example, if the pressure in the outer bag 101 is, for example, a vacuum degree of about 1 Pa to 10 Pa, the elasticity of the covering material 102 itself Thus, not only the thickness dimensions t2c and t3c of the covering material 102 become smaller (t2c <t2a, t3c <t3a), but also the thickness dimensions t4c and t5c in the width direction become smaller (t4c <t4a, t5c <t5a), Therefore, since the size (T13 × W13) of the heat insulating material 100 itself can be made considerably smaller than the initial size (T11 × W11 in FIG. 1), the transportability and storage property of the heat insulating material 100 itself are improved.

  Further, the timing and method for opening the outer bag 101 covering the covering material 102 are not particularly limited. For example, as shown in FIG. 3, while the gap S4 or S3 dimension between the heat insulating material 100 and the outer wall 201 or the inner wall 202 is maintained, the filler 203 in FIG. 2 is replaced with the gap S2 between the heat insulating materials 100c. At the same time as the injection between the dimensions, the adhesive 204 is injected into the gap S4 dimension or the S3 dimension, and while the filler 203 or the adhesive 204 diffuses, a part of the outer bag 101c is preliminarily applied to the outer bag 101c, for example. It is good also as a structure which opens the installation belt | band | zone (not shown) installed, or opens with a cone, a cutter, etc. Alternatively, the degree of gas permeability of the outer bag 101c itself, such as a polyethylene film, is set in advance by setting the sealing degree of the welded portion or the bonding portion 101h around the outer bag 101 in advance. Thus, after being installed between the outer wall 201 and the inner wall 202, gas components from outside air gradually intrude depending on the degree of sealing and gas permeability set in advance, so that the inside of the outer bag 101c after a predetermined time. May be set to be the same condition as when the outer bag 101c is unsealed.

  According to the second embodiment, the heat insulating material 100 is configured by the covering material 102 that covers the vacuum heat insulating material 100 and has elasticity in itself, and the outer bag 101 that covers the covering material 102. Even if parts, equipment, etc. abut, since the covering material 102 absorbs the impact when abutting, the heat insulating unit 200 provided with the heat insulating material 100 with little damage to the vacuum heat insulating material 100 and excellent handleability. Can provide.

  Further, since the covering material 102 itself is elastic and the covering material 102 can be compressed in advance, it is easy to attach the heat insulating material 100 in the space formed by the outer wall 201 and the inner wall 202, and after the attachment, the covering material 102 is covered. Due to the restoring force of the material 102 itself, the heat insulating material 100 is pressure-bonded to the outer wall 201 or the inner wall 202, the air flow in the heat insulating unit 200 is reduced, the heat insulating performance is good, and the heat insulating unit 200 is excellent in strength. it can.

  Moreover, when the inside of the outer bag 101 is deaerated and compressed, the outer dimensions of the heat insulating material 100 can be reduced, so that the transportability and the storage property can be improved.

In addition, the vacuum heat insulating material 103 is covered with an elastic covering material 102 and stored in the outer bag 101, and the bag 101 is sealed in a state where the inside of the outer bag 101 is decompressed and the covering material 102 is compressed. 100, and the insulating material 100 is installed between the outer wall 201 and the inner wall 202, and the covering material 102 is restored by releasing the sealing of the outer bag 101 of the insulating material 100 so that the insulating material 100 is connected to the outer wall 201. The heat insulating wall is formed between the inner wall 202 and the heat insulating material 100, the outer wall 201, and the inner wall 202 to form a heat insulating wall. Is easy.
(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 4 is a cross-sectional explanatory view of a main part of a heat insulating unit showing a third embodiment of the present invention.

  In FIG. 4, reference numeral 210 denotes a heat insulating unit configured to be installed in a heat insulating portion constituting a refrigerator, a freezer, a house, a warehouse, a freezer car, a vehicle, or the like. The heat insulating unit 210 is configured to reduce heat leakage between the outer wall 211 and the inner wall 212 by installing one or a plurality of heat insulating materials 110 described later between the outer wall 211 and the inner wall 212. The outer wall 211 and the inner wall 212 may also be used as an outer box or an inner box constituting a refrigerator or the like, or may be used as an outer material or an interior material for a house or a vehicle.

  The heat insulating material 110 covers the vacuum heat insulating material 113 and the vacuum heat insulating material 113, and has its own flexibility and resilience. With this resilience, the heat insulating material 110 and the outer wall 211 or the inner wall 212 are pressure-bonded to each other. And a reinforcing member 114 having a puncture resistance provided between the vacuum heat insulating material 113 and the covering material 112.

  This reinforcing member 114 has a position where a nail or the like 214 for fixing the member 213 to the outer wall 211 is accidentally hit at a position indicated by 214b, or a screw or the like 218 for fixing the member 217 to the inner wall 212 is indicated by an error 218b. It is installed so that the vacuum heat insulating material 113 can be covered so that the vacuum heat insulating material 113 is not easily damaged by the nail 214b and the screw 218b. The material of the reinforcing member 114 is not particularly limited as long as it retains the piercing strength against the above-described nail 214b and screw 218b. For example, a reinforced synthetic resin mainly composed of a steel plate, an aluminum plate, an ABS resin, or the like can be used.

  The outer bag 111 is a film-like bag that covers the covering material 112 so that when the covering material 112 is attached to the outer wall 211 and the inner wall 212, the debris and powder of the covering material 112 are not scattered around by handling during attachment. It is.

According to the third embodiment, even if the screw 218, the nail 214b, etc. are driven into the heat insulating material 110, the vacuum heat insulating material 113 in the heat insulating material 110 is not easily damaged. It is possible to provide a heat insulating unit that is not limited in location and has a good long-term heat insulating performance.
(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 5 is a cross-sectional explanatory view of a main part of a heat insulating unit showing a fourth embodiment of the present invention.

  In FIG. 5, reference numeral 230 denotes a heat insulating unit configured to be installed in a heat insulating portion constituting a refrigerator, a freezer, a house, a warehouse, a freezer car, a vehicle, or the like. The heat insulation unit 230 includes partition sheets 233 and 234 that divide the space between the outer wall 231 and the inner wall 232 into a plurality of heat insulation layers. The heat insulation material 100 is placed between the partition sheets 233 and 234 at the initial thickness. A plurality of compressed members are set to a predetermined thickness T53 smaller than the thickness T11, and a filler 203 is filled between the plurality of heat insulating materials 100.

  Further, between the outer wall 231 and the partition sheet 233, the vacuum heat insulating material 173 and the vacuum heat insulating material 173 are covered, and the covering material 172 having elasticity in itself is provided on the outer wall 231 side of the vacuum heat insulating material 173. A plurality of heat insulating materials 170 composed of reinforcing members 174 having puncture resistance are provided, and a filler 203 is filled between the plurality of heat insulating materials 170.

  Further, between the inner wall 232 and the partition sheet 234, the vacuum heat insulating material 183, the covering material 182 that covers the vacuum heat insulating material 183 and has flexibility and resilience to itself, and the inner wall 232 of the vacuum heat insulating material 183 are provided. A plurality of heat insulating materials 180 formed by reinforcing members 184 having puncture strength provided on the side are provided, and a filler 203 is filled between the plurality of heat insulating materials 180.

  As shown in FIG. 5, the installation positions of the heat insulating materials 100, 170, and 180 are the amount of heat leakage between the outer wall 231 and the inner wall 232 by shifting the installation portions of the vacuum heat insulating materials 103, 173, and 183. However, they are arranged so as to be almost uniform in any part. That is, the filler 203 filled in the gaps of the plurality of heat insulating materials 170, 100, 180, etc. is, for example, foamed polyurethane or hot melt adhesive as described above with reference to FIG. Is usually inferior to the vacuum heat insulating materials 173, 103, 183, etc. described above. Accordingly, the positions of the portions of the filler 203 having inferior heat insulation performance are shifted from each other, and the heat insulation performance between the outer wall 231 and the inner wall 232 is arranged to be substantially uniform in any portion.

  Further, the outer wall 231 and the inner wall 232 may also be used as an outer box or an inner box constituting a refrigerator or the like, or may be used as an outer material or an interior material for a house, a vehicle, or the like.

  According to the fourth embodiment, since the heat insulating performance between the outer wall 231 and the inner wall 232 can be configured to be almost uniform in any part, even in a heat insulating wall having a temperature difference, local condensation is caused. It is possible to provide a heat insulating unit with good heat insulating performance.

  Further, even in a heat insulating wall having a different thickness dimension (T50 dimension shown in FIG. 5) between the outer wall 231 and the inner wall 232, the outer wall 231 and the inner wall 232 are divided into an arbitrary number of layers, Since the standardized heat insulating material 100, 170, or 180 having a predetermined size may be used, it is possible to provide a heat insulating unit that is advantageous in terms of manufacturing cost and has uniform heat insulating performance.

  Moreover, if the partition sheets 233 and 234 divided into a plurality of heat insulation layers are made of a material having heat reflectivity such as aluminum, the heat insulation performance of the heat insulation unit can be further improved.

In addition, the thicknesses T52 and T54 of the partition sheets 233 and 234 to be divided into a plurality of heat insulating layers are set to predetermined sizes, and the partition sheets 233 and 234 are made to have sound insulation properties and sound absorption properties such as butyl rubber and glass wool, for example. If it comprises with the material which has, the sound insulation performance of a heat insulation unit can also be improved further.
(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a cross-sectional explanatory diagram of a main part of a refrigerator showing a fifth embodiment of the present invention, FIG. 7 is a cross-sectional view along AA in FIG. 6, FIG. 8 is a cross-sectional view along BB in FIG. The principal part expanded sectional view of a C section partition is shown.

  In FIG. 6, reference numeral 300 denotes a heat insulating box including a refrigerator door. The heat insulating box 300 includes a plurality of outer casings 301 that form the outer shell, an inner box 302 that forms the interior side, and a vacuum insulating material that will be described later installed in a heat insulating portion between the outer box 301 and the inner box 302. A heat insulating material 120 (hereinafter described as the heat insulating material 120 when described including all of the heat insulating materials 120a, 120b, 120c, 120d, and 120e described later) and a filler described later filled between the plurality of heat insulating materials 120. 311.

  And by making 70% or more of heat insulation part volume into an inorganic substance, even when the heat insulation box 300 is discarded, it has comprised so that the load with respect to the natural ecosystem circulation cycle may become small.

  In the heat insulation box 300, a refrigeration temperature chamber 303 configured by a refrigeration chamber 303a and a vegetable chamber 303b and a refrigeration temperature chamber 304 configured by an ice making chamber 304a and a freezing chamber 304b are partitioned. Reference numeral 305 denotes a refrigerating room cooling duct configured to cool the refrigerating temperature room 303. A freezer compartment cooling duct 306 includes a cooler 308 and a blower 307 and is configured to cool the freezing temperature chamber 304.

  In order to reduce heat leakage in the refrigeration temperature chamber 303 and the freezing temperature chamber 304, a plurality of heat insulating materials 120 including a vacuum heat insulating material, which will be described later, are insulated from the surroundings of the refrigeration temperature chamber 303, the freezing temperature chamber 304, and the like. It is installed as a wall. For example, a plurality of heat insulating materials 120a having a thickness T31 are installed on the wall surface forming the refrigeration temperature chamber 303, and the heat insulation material 120a is provided on the back surface of the refrigeration chamber cooling duct 305, which has a lower temperature than the refrigeration temperature chamber 303. A heat insulating material 120b having a T32 dimension that is thicker than the T31 dimension is installed. In addition, a plurality of heat insulating materials 120c having a T41 size thicker than the T31 size of the heat insulating material 120a are installed on the wall surface forming the refrigerating temperature chamber 304 that is lower in temperature than the refrigerated temperature chamber 303. A heat insulating material 120d having a T42 dimension that is thicker than the T41 dimension of the heat insulating material 120c is installed on the back surface of the cooling chamber cooling duct 306 that is at a lower temperature. Moreover, since the temperature of the peripheral part of the compressor 309 and the condenser 310 installed in the machine room below the refrigeration temperature chamber 304 is higher than the normal outside air temperature, the peripheral part of the compressor 309 and the condenser 310 is The part is provided with a heat insulating material 120e having a T43 dimension that is thicker than the T41 dimension of the heat insulating material 120c.

  As in the above example, the heat insulating part between the outer box 301 and the inner box 302 uses the heat insulating material 120 in as much part of its volume as possible in order to reduce the heat leakage amount of the heat insulating part as much as possible. It is set to.

  However, since the strength of the heat insulating material 120 itself is inferior to that of rigid urethane foam or the like, if the heat insulating portion between the outer box 301 and the inner box 302 is constituted only by the heat insulating material 120, the strength of the heat insulating box body 300 itself. There is a risk that it will not be able to endure actual use.

  Therefore, in the fifth embodiment, a filler having an adhesive force with the outer box 301, the inner box 302, and the heat insulating material 120, for example, a hard urethane foam, is required where the strength of the heat insulating box 300 needs to be improved. 311 is filled so that the strength of the heat insulating box 300 is not problematic in practice. Specifically, the box opening peripheral portion shown in FIG. 6 (G1 portion in FIGS. 6 and 7), the box ridge line portion (G2 and G3 portions in FIG. 6, G6 and G7 portions in FIG. 7 and FIG. 8). G8, G9 part) or between the plurality of heat insulating materials 120 (G4 part in FIG. 6), etc., by filling with foaming filler 311 such as a hard urethane foam which itself has adhesive strength and heat insulating properties. The strength of the heat insulating box 300 is made practically unproblematic by improving the strength.

  According to experiments by the inventors, in order to make the strength of the heat insulation box 300 practically unproblematic, the place where the strength of the heat insulation box 300 is improved, for example, the aforementioned box opening peripheral portion. In addition, it is necessary to install the filler 311 having an adhesive force between itself and the box ridge line portion or between the plurality of heat insulating materials 120 by about 20% or more, preferably about 25% or more of the heat insulating portion volume. It turns out that it is good.

  It has also been found that the filling material 311 to be filled so as to improve the strength of the heat insulating box 300 is, at present, a method of foaming and filling hard urethane foam or the like in terms of productivity and cost. However, if organic substances such as rigid urethane foam are discarded, they will be a burden on the circulation cycle of the ecosystem of the global environment, and organic substances such as rigid urethane foam will be depleted in the future if they are used as they are. Since it is generated from petroleum that has a fear, it is necessary to reduce the amount of use as much as possible.

  Therefore, in order to make the strength of the above-described heat insulating box 300 practically unproblematic and to reduce the number of organic substances as much as possible, in the fifth embodiment, heat insulating portions other than the filler 311 are provided as much as possible. An inorganic material was used. According to the experiments by the inventors, the heat insulating portion other than the filler 311, that is, the plurality of heat insulating materials 120 described above, has about 97% or more of its volume as an inorganic substance, as will be described later. did it. Therefore, the ratio of the inorganic substance to the heat insulation partial volume of the heat insulation box 300 is {(100-25 (volume of filler)) × 0.97 (inorganic substance ratio of heat insulation) = 72.7}. It could be about 72% or more.

  Hereinafter, an example in which 70% or more of the above-described heat insulating partial volume is an inorganic substance will be described. In addition, since the ratio of the inorganic substance to the volume of the heat insulating material 120 varies depending on the size of the heat insulating box 300 itself in which the heat insulating material 120 is installed, the size of the refrigerator shown in FIG. In 2005, it was assumed to be the same level as the 400 liter class that is generally commercially available. The heat insulating wall thickness was assumed to be the dimensions shown in Table 2.

  Here, Table 1 and Table 2 will be described.

  In Table 1, the “symbol in the drawing” column is the symbol shown in FIGS. 6 to 8 described above, and the “size” column shows a dimension example of the 400 liter class refrigerator described above. In addition, the numerical values of the filler dimensions G1, G2, G3... G9 in the “size” column are specific values obtained when the above-described strength of the heat insulating box 300 is not practically problematic by the inventors' experiments. It is an example.

  In Table 2, “inside temperature” is a set temperature in the room or duct of each part, “outside air temperature” is an ambient temperature in each part of the refrigerator, and “temperature difference” is “inside temperature”. And the temperature difference between “outside air temperature”. “Insulating material thickness” is an example of the thickness dimension of the insulating material 120 at each part, and “vacuum insulating material thickness” indicates an example of the thickness of the vacuum insulating material contained in the insulating material 120. In this example, the thickness of the vacuum heat insulating material having excellent heat insulating performance is reduced so that the amount of heat leakage from the heat insulating wall can be uniformly reduced in any portion. The temperature difference is substantially proportional to the temperature difference. For example, when the thickness t31 of the vacuum heat insulating material included in the thickness T31 of the heat insulating material 120a (120a in FIG. 6) installed around the refrigerated temperature chamber of 22 ° C. is 20 mm, The thickness t41 of the vacuum heat insulating material contained in the thickness T41 of the heat insulating material 120c (120c in FIG. 6) installed around the freezing temperature chamber of 45 ° C. is about 40 mm {t41 = (45/22) × t31} The thickness t42 of the vacuum heat insulating material included in the thickness T42 of the heat insulating material 120d (120d in FIG. 6) installed on the rear surface of the freezer compartment cooling duct having a “temperature difference” of 60 ° C. is about 60 mm {t42 = (60 / 22) × t31} so that the amount of heat leakage at each part can be reduced uniformly.

  And the vacuum heat insulating material 123 included in the heat insulating material 120 is comprised from the core material 123f which consists of inorganic fibers, such as glass wool, and the jacket material 123e which covers the core material 123f, and the jacket material 123e is polyethylene, for example A getter agent (not shown) that forms a film of 50 μm to 200 μm made of an organic material such as terephthalate resin and adsorbs moisture and gas components in the vacuum heat insulating material 123 is used as an organic material such as molecular sieves or dawsonite. When the volume of the core material 123f is set to about 1% and the size of the vacuum heat insulating material 123 is set to the dimensions shown in Tables 1 and 2, the vacuum heat insulating material 123 has about 98% of the inorganic material. Could be configured.

  Then, a covering material 122 that covers the vacuum heat insulating material 123 is formed of inorganic fibers such as glass wool, and an outer bag 121 that covers the covering material 122 is formed with a film of 50 μm to 200 μm made of an organic substance such as polyethylene resin, for example. When formed and the size of the heat insulating material 120 is set to the dimensions shown in Tables 1 and 2, the heat insulating material 120 was able to be composed of approximately 97% of an inorganic substance.

  Then, when the heat insulating material 120 is installed as shown in FIG. 6 and the dimensions of the heat insulating material 120 and the filler 311 are set to the dimensions shown in Tables 1 and 2, the above-described heat insulating portion has a volume of almost 70% or more of inorganic. I was able to make it into a substance.

  In FIG. 7, reference numeral 307 denotes a blower installed on the convex portion 302 b provided on the inner box back surface portion 302 a that forms the inside of the heat insulating box 300. 120d is a heat insulating material installed on the back surface of the fan 307 mounting portion. Then, in order to ensure a gap δ1 between the front end of the locking tool 307a and the heat insulating material 120d so that the front end of the locking tool 307a such as a screw of the blower 307 does not damage the heat insulating material 120d, the protrusion 302b A convex dimension H37 is set. Reference numeral 312 denotes a positioning / reinforcing member for improving the strength of the peripheral edge (G1) of the box body and determining the position of the heat insulating material 120 to be installed in the portion. For example, a synthetic resin or steel plate having a predetermined strength Etc. are formed.

  When the positioning / reinforcing member 312 is installed, the box strength of the heat insulating box 300 is improved depending on the reinforcing strength of the positioning / reinforcing member 312. Therefore, the filling dimension G1 of the filler 311 filled in the portion is Obviously, it can be set smaller than the dimensions described above in Table 1.

  The dimension W32 indicates the internal width dimension of the refrigeration temperature chamber 303 or the freezing temperature chamber 304, and the dimension W33 indicates the width of the vacuum heat insulating material 123 in the heat insulating material 120 disposed at the door of the refrigeration temperature chamber 303 or the freezing temperature chamber 304. Show dimensions. And it is comprised so that the amount of heat leaks from throat part S31 may be reduced by setting the width dimension W33 of the vacuum heat insulating material 123 larger than the interior width dimension W32. In other words, in order to reduce the amount of heat leakage from the throat portion S31 of the refrigerator, the vacuum heat insulating material 123 can be overhanged by the dimension δ2 (δ2> zero) on the inner surface 302e having a temperature lower than the outside air temperature. A width dimension W33 is set.

  In FIG. 8, reference numeral 311 denotes a filler such as a hard urethane foam having heat insulation and adhesiveness and having a certain degree of strength, and the inner box ridge line is formed by the adhesive force of the filler 311 itself. The portion 302c, the outer box ridgeline portion 301c, and the plurality of heat insulating materials 120 are integrally bonded. In other words, in order to make the strength of the heat insulating box 300 have no problem in practical use, the filler 311 having adhesive force is filled in the ridge line portion that is a point on the strength of the heat insulating box 300.

  The size of the portion (G8, G9 in FIG. 8) filled with the filler 311 is set according to the size of the heat insulating box 300, the strength of the outer box 301 itself, or the strength of the inner box 302 itself. That is obvious.

  In FIG. 9, reference numeral 500 denotes a partition that partitions the refrigeration temperature chamber 303 and the freezing temperature chamber 304 in FIG. Reference numeral 400 denotes a front partition which is formed integrally with or separately from the middle partition 500 and has a closed face plate 401 and a heat pipe 402 for the vegetable room door and ice making room door in FIG. Reference numeral 600 denotes a rear partition that is formed integrally with or separately from the inner partition 500 and that partitions the refrigeration temperature chamber 303 and the freezer compartment cooling duct 306.

  And since all the partitions 400, 500, 600 are comprised so that the chamber which has a temperature difference may be partitioned, it is necessary to insulate so that dew condensation and frost may not arise on the surface side or the back surface side. Moreover, since all of the partitions 400, 500, and 600 are installed in the cabinet, it is necessary to make them thin so as not to sacrifice as much as possible the storage space for the stored food stored in the refrigerator due to the volume of the partition.

  Therefore, in the fifth embodiment, heat insulating materials (140, 150, 160) in which vacuum heat insulating materials (143, 153, 163) described later having good heat insulating performance are included in the partitions (400, 500, 600). Is provided to prevent condensation and frost formation on the partitions (400, 500, 600), and to make the partitions, 400, 500, 600 thin so as to provide a refrigerator with high internal volume efficiency. That is, a vacuum heat insulating material (143, 153, 163) with good heat insulating performance is applied to a covering material (142, 152, 162) having flexibility and resilience in itself, for example, inorganic fibers such as glass wool. By covering, the covering material (142, 152, 162) itself can be installed in the partition (400, 500, 600) without any gaps due to the flexibility and resilience of the covering material (142, 152, 162). Can do it.

  In addition, if it is set as the structure which covers the coating | covering material (142,152,162) which included the vacuum heat insulating material with the outer bag (141,151,161), a heat insulating material (140,150,160) will be divided (400,500, 600) Since the debris and fine powder of the covering material (142, 152, 162) will not be scattered around during the installation work when installing in 600), the heat insulating material (140, 150, 160) with good handling properties should be used. Can do.

  According to the fifth embodiment, since 70% or more of the heat insulating part volume constituting the refrigerator, freezer, house, warehouse, refrigerated vehicle, vehicle, or the like is made of an inorganic substance, it is a burden on the natural ecosystem circulation cycle. Since there are few organic substances, it is possible to provide a thermal insulation unit equipped with a thermal insulation material that is friendly to the global environment.

  Moreover, in the part which occupies 70% or more of a heat insulation part volume, while installing the heat insulating material 120 which included the vacuum heat insulating material with favorable heat insulating performance, it is a key point where the strength between the heat insulating materials 120 and the heat insulating box 300 is improved. Since the filler 311 having adhesiveness itself is installed, it is possible to provide a structure having good heat insulation performance and practically no problem in terms of box strength.

  In addition, since about 97% or more of the volume of the heat insulating material 120 is made of an inorganic material, even when the heat insulating material 120 is discarded, there are few organic materials that become a burden on the ecosystem circulation cycle in the natural world. We can provide easy insulation.

In addition, a heat insulating material 120 containing a vacuum heat insulating material with good heat insulating performance is installed in a portion occupying 70% or more of the heat insulating portion volume, and a partition (400, 500, 600) that partitions the refrigeration temperature chamber and the freezing temperature chamber Inside, the heat insulating materials (140, 150, 160) including the vacuum heat insulating materials (143, 153, 163), which will be described later, which have good heat insulating performance, are installed, so that the internal volume efficiency is good and the refrigerator is advantageous in terms of energy saving. Can provide.
(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described with reference to FIG. FIG. 10 is a cross-sectional explanatory view of the main part of the refrigerator showing the sixth embodiment of the present invention. The sixth embodiment is different from the fifth embodiment in the points described below, and the other points are basically the same as those in the fifth embodiment, and thus redundant description is omitted.

  In FIG. 10, G21 part is a box-opening peripheral part filled with a filler 311 having adhesive properties so that the box strength of the heat insulating box 300 is improved. Reference numerals 301f and 302f denote reinforcing portions that are integrally formed with the outer box 301 and the inner box 302 in order to reinforce the practical strength of the peripheral edge of the box body opening. In other words, the height G23 of the reinforcing portion 302f raised at the periphery of the inner box opening flange portion, or the reinforcing portion extended from the outer box holding portion that holds the inner box opening flange portion. By setting the height G22 dimension of 310f to a predetermined size, the box strength of the heat insulating box 300 is configured so as not to cause a practical problem.

  According to the sixth embodiment, by providing the reinforcing portions 301f and 302f that are integrally formed with the outer box 301 and the inner box 302, the box strength of the heat insulating box 300 does not cause a practical problem. Therefore, a reinforcing member or the like is not necessary, so that a heat insulating box that is advantageous in terms of manufacturing cost can be provided.

It is sectional drawing of the heat insulating material which concerns on 1st Embodiment of this invention. It is principal part sectional explanatory drawing of the heat insulation unit which shows 2nd Embodiment of this invention. It is sectional drawing of the manufacture process explaining an example of the manufacturing method of the heat insulation unit of FIG. It is principal part sectional explanatory drawing of the heat insulation unit which shows 3rd Embodiment of this invention. It is principal part cross-sectional explanatory drawing of the heat insulation unit which shows 4th Embodiment of this invention. It is principal part cross-sectional explanatory drawing of the refrigerator which shows 5th Embodiment of this invention. It is AA sectional drawing in FIG. It is BB sectional drawing in FIG. It is a principal part expanded sectional view of the C section partition in FIG. It is principal part sectional explanatory drawing of the refrigerator which shows 6th Embodiment of this invention. It is principal part cross-sectional explanatory drawing of the vacuum heat insulating material which shows a prior art example.

Explanation of symbols

  100,110,120,120a, 120b, 120c, 120d, 120e, 140,150,160,170,180,190 ... insulation, 101,111,121,141,151,161,171,181,191 ... outside Bag, 102, 112, 122, 142, 152, 162, 172, 182, 192 ... Covering material, 103, 113, 123, 143, 153, 163, 173, 183, 193 ... Vacuum insulation, 103d, 103e, 123e ... Jacket material, 103f, 123f ... Core material, 103g ... Ear part, 114, 174, 194 ... Reinforcement member, 200, 210, 230 ... Thermal insulation unit, 201, 211, 231, 301 ... Outer wall, 202, 212, 232 , 302 ... inner wall, 203, 216, 235, 236, 237, 311, 313 ... filler, 2 4 ... Adhesive, 213, 217 ... Member, 214, 214b ... Nail, etc. 218, 218b ... Screw, etc. 233, 234 ... Partition sheet, 300 ... Insulation box, 301 ... Outer box, 302 ... Inner box, 303 ... Refrigeration temperature chamber, 304 ... Refrigeration temperature chamber, 305 ... Refrigeration chamber cooling duct, 306 ... Freezing chamber cooling duct, 307 ... Blower, 307a ... Locking tool, 308 ... Cooler, 309 ... Compressor, 310 ... Condenser 312 ... Positioning and reinforcing member, 400 ... Front partition, 500 ... Middle partition, 600 ... Rear partition.

Claims (10)

Covering the vacuum heat insulating material with an elastic covering material and storing it in the outer bag, reducing the pressure inside the outer bag and sealing the outer bag with the covering material compressed to form a heat insulating material,
The heat insulating material is installed between the outer wall and the inner wall, and the covering material is restored by releasing the sealing of the outer bag of the heat insulating material so that the heat insulating material is sandwiched between the outer wall and the inner wall. A method for manufacturing a heat insulating wall, comprising forming a heat insulating wall from the heat insulating material, the outer wall, and the inner wall. A heat insulating unit comprising an outer wall, an inner wall, and a heat insulating material installed between the outer wall and the inner wall,
The heat insulating material includes a vacuum heat insulating material, a covering material that covers the vacuum heat insulating material and has elasticity, and an outer bag that covers the covering material that covers the vacuum heat insulating material. .   3. The heat insulating unit according to claim 2, wherein the vacuum heat insulating material has a panel-shaped core material and a cover material that wraps the core material and has an inside including the core material in a vacuum state. The heat insulating unit is formed, and the covering material is installed so as to cover both sides of the flat portion of the vacuum heat insulating material.   The heat insulating unit according to claim 3, wherein the covering material and the outer bag are formed wider than a size including an ear portion formed around the vacuum heat insulating material to cover the ear portion. Heat insulation unit.   5. The heat insulating unit according to claim 4, wherein a reinforcing member having a puncture strength against a nail or a screw is installed between the vacuum heat insulating material and the covering material. A heat insulating unit comprising an outer wall, an inner wall, and a heat insulating material installed between the outer wall and the inner wall,
The heat insulating material includes a vacuum heat insulating material, a covering material that covers the vacuum heat insulating material and has elasticity, and an outer bag that covers the covering material that covers the vacuum heat insulating material,
The covering material is composed of a fiber polymer composed of inorganic fibers or organic fibers,
The heat insulating unit is installed so that both side flat portions are brought into contact with the outer wall and the inner wall by elasticity of the covering material.   The heat insulation unit according to any one of claims 1 to 6, wherein the covering material is formed of a material having sound insulation and sound absorption properties such as butyl rubber and glass wool.   A heat insulating material comprising a vacuum heat insulating material, a covering material that covers the vacuum heat insulating material and has elasticity, and an outer bag that covers the covering material that covers the vacuum heat insulating material.   9. The heat insulating material according to claim 8, wherein the vacuum heat insulating material has a panel-like core material and a jacket material that wraps the core material and has an inside including the core material in a vacuum state. The heat insulating material is formed, and the covering material is installed so as to cover the entire flat portion of the vacuum heat insulating material from both sides. The heat insulating material according to claim 9, wherein the covering material is made of a fiber polymer made of inorganic fiber or organic fiber, and the outer bag is stored in a state where the inside is decompressed and the covering material is compressed and sealed. A heat insulating material characterized by

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