JP2008157431A - Vacuum heat insulating material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum heat insulating material easy to bend, easily manufactured and maintaining a sufficient heat insulating effect even if bent. <P>SOLUTION: A core material comprising a first core material and a second core material is used to form a thick layer part comprising the first core material and second core material, and a thin layer part comprising the first core material and thinner in thickness than the thick layer part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vacuum heat insulating material that can be bent.

  A vacuum heat insulating material is used in a device such as a container that needs to be insulated in order to keep warm and cool. In the case of using a vacuum heat insulating material for such a device, the vacuum heat insulating material is deformed and arranged around the space for keeping heat and cold so as to conform to the shape of the space.

  For example, there is one that uses a vacuum heat insulating material that can be deformed into a cylindrical shape in order to keep a columnar space such as a water heater (see Patent Document 1). This vacuum heat insulating material was formed by forming a plurality of grooves in the vacuum heat insulating material by cutting, and was easy to bend at the position of the groove.

  Moreover, there existed what comprised the core material of the vacuum heat insulating material in the part which consists of a normal fiber, and the part which consists of powder (for example, refer patent document 2). This vacuum heat insulating material was intended to be easily bent at the portion made of the powder.

Furthermore, after forming the vacuum heat insulating material, a groove for making it easy to bend (see, for example, Patent Document 3), or before forming the vacuum heat insulating material, a groove for making the wire easy to be bent is formed in the core material. There is what to do (for example, see Patent Document 4).
JP 2000-249290 A JP 2005-106311 A JP 2006-29413 A Japanese Patent No. 3408101

  In the conventional vacuum heat insulating materials described above, all the grooves are formed by cutting or pressing, so that it is difficult to manufacture, the manufacturing process becomes complicated, and the grooves are sufficiently formed. In some cases, it could not be formed. In addition, since it is difficult to keep the powder in a certain shape for those using powder, it is difficult to make the vacuum heat insulating material the desired shape, and a process for encapsulating the powder is required. The process had to be complicated.

  The present invention has been made in view of the above points, and the object of the present invention is to be a vacuum that is easy to bend and can be easily manufactured, and can maintain a sufficient heat insulating effect even when folded. It is to provide insulation.

  In order to achieve the above object, the present invention includes a first core material and a second core material using a core material including a first core material and a second core material. A thick layer portion and a thin layer portion including the first core material and having a thickness smaller than that of the thick layer portion are formed.

Specifically, the vacuum heat insulating material according to the present invention is:
A vacuum heat insulating material including a core material part, and an outer packaging material that houses the core material part and can maintain the inside in a reduced pressure state,
The core part is
At least one first core material;
And a separate body from the first core material, and at least one second core material,
The second core material overlaps at least partly with the first core material;
A thick layer portion including the first core material and the second core material;
A thin layer portion including the first core material and having a thickness smaller than the thick layer portion is formed.

  The vacuum heat insulating material according to the present invention includes a core material portion and an outer packaging material. The outer packaging material can store the core material portion and can maintain the inside of the outer packaging material in a decompressed state.

  The core member described above includes a first core member and a second core member. The first core material and the second core material are configured separately. Further, at least one of the first core material and the second core material may be provided.

  Further, the second core material is configured to overlap at least partly with the first core material. That is, the aspect in which the first core material and the second core material overlap each other is an aspect in which the entire second core material overlaps with the first core material or one of the second core materials. There is an aspect in which the part overlaps with the first core material and a part of the second core material overlaps with the first core material.

  In addition, it is preferable that a member for joining such as an adhesive does not exist in a place where the first core member and the second core member overlap.

  Further, a thick layer portion and a thin layer portion are formed in the core member portion by the first core member and the second core member.

  The thick layer portion includes a first core material and a second core material. That is, the thick layer portion only needs to include at least the first core material and the second core material, and the thick layer portion may further include another member.

  The thin layer portion includes the first core member, and is formed so that the thickness of the thin layer portion is thinner than the thickness of the thick layer portion. That is, the thin layer portion may include another member in addition to the first core material as long as the thickness of the thin layer portion is thinner than the thickness of the thick layer portion.

  By adopting such a configuration, if the first core material and the second core material are overlapped, the core material portion can be configured, so that the vacuum heat insulating material can be easily manufactured, and the manufacturing process is simplified. can do.

  Moreover, since the thin layer part is formed, the vacuum heat insulating material which can be bent in a thin layer part and is easy to bend can be provided. Furthermore, since at least the first first core material is included in the thin layer portion, it is possible to maintain the heat insulating effect of the bent portion even when the thin layer portion is bent.

  Furthermore, even when a portion of the thick layer portion or the thin layer portion described above includes a portion where the thickness is not constant, an overall approximate thickness of the thick layer portion or the thin layer portion, or an average By using an appropriate thickness, it is possible to determine whether or not the thickness of the thin layer portion is thinner than the thickness of the thick layer portion.

  In addition, as described above, it is preferable that a member for joining such as an adhesive does not exist in a place where the first core member and the second core member overlap. Furthermore, the first core material and the second core material are originally configured separately, and the first core material and the second core material are between the first core material and the second core material. The first core material and the second core material are separated from each other as long as a layer made of a material different from the above, or a layer such as a layer in which the first core material or the second core material is altered is interposed. It is.

  Furthermore, it does not depend on the size or width of the thick layer portion or thin layer portion described above. For example, in the case where a plurality of thick layer portions are formed, even if adjacent thick layer portions are formed in close contact with each other, if they can be folded between adjacent thick layer portions, the portions that can be folded are Since it is a thin layer part and can confirm presence of a thin layer part by bending, it is a vacuum heat insulating material in which both the thick layer part and the thin layer part were formed.

  Furthermore, when a plurality of thick layer portions are formed, it is preferable that the opposite end portions of adjacent thick layer portions come into contact with each other or be pressed together when bent. By doing in this way, the heat insulation effect of the bent part can be improved.

The vacuum heat insulating material according to the present invention is
The thin layer portion preferably has a bending rigidity smaller than that of the thick layer portion.

  By doing so, the thin layer portion is not only thin, but also has a small bending rigidity, so that the bending can be facilitated.

The vacuum heat insulating material according to the present invention is
The first core member has a substantially plate shape having a first thickness,
More preferably, the second core member has a substantially plate-like shape having a second thickness that is greater than the first thickness.

  By making the first core material and the second core material into such a shape, the manufacturing can be facilitated and the manufacturing process can be further simplified.

The vacuum heat insulating material according to the present invention is
At least two of the second core members are juxtaposed along the thin layer portion apart from each other;
More preferably, the thin layer portion is disposed between the thick layer portions.

  Since the second core members are separated from each other, the manufacturing can be facilitated, and the thin layer portion is positioned between the adjacent thick layer portions, so that the second core material can be folded accurately at the thin layer portion. And bending can be facilitated.

Furthermore, the vacuum heat insulating material according to the present invention is:
The thin layer portion has a bent portion,
It is preferable that the two thick layer portions sandwiching the thin layer portion having the bent portion form a predetermined angle.

  It is preferable that the thin layer portion is deformed so that only the thin layer portion is bent and a bent portion is formed in the thin layer portion. It is preferable that the thin layer portion is bent and deformed so that an angle between two adjacent thick layer portions sandwiching the thin layer portion forms a desired angle. This desired angle can be appropriately determined according to the shape of the device in which the vacuum heat insulating material is disposed.

  The direction in which the thin layer portion is folded is a direction in which the other thick layer portion is folded in the counterclockwise direction with respect to one of the two thick layer portions sandwiching the thin layer portion. But you can. For example, when two thick layer portions sandwiching the thin layer portion are arranged on the same side with respect to the thin layer portion, they are bent to the side where the second core member is arranged, that is, by bending Even if the second core member is bent in a direction that gradually faces each other, the second core member is bent back to the side where the second core member is not disposed. It may be bent in any direction.

The vacuum heat insulating material according to the present invention is
A vacuum heat insulating material including a core material part, and an outer packaging material that houses the core material part and can maintain the inside in a reduced pressure state,
The core part is
A substantially flat single first core material;
A plurality of second core members that are smaller than the first core member and are substantially flat.
The plurality of second core members are spaced apart from each other and arranged side by side on the first core member,
It is desirable that the bending rigidity of the first core material is smaller than the bending rigidity of the plurality of second core materials.

  By adopting such a configuration, if the first core material and the second core material are overlapped, the core material portion can be configured, so that the vacuum heat insulating material can be easily manufactured, and the manufacturing process is simplified. can do.

  Moreover, since the bending rigidity of the 1st core material is small, it can be bent with the 1st core material, and the vacuum heat insulating material which can be bent easily can be provided. Furthermore, since it can be bent with the first core material, the heat insulating effect of the bent portion can be maintained even when it is bent.

The vacuum heat insulating material according to the present invention is
The thickness of the first core material is more desirably thinner than the thickness of the second core material.

  With such a configuration, since the thickness of the first core material is thinner than the thickness of the second core material, bending can be facilitated.

  It is easy to bend and can be easily manufactured, and a vacuum heat insulating material that can sufficiently maintain a heat insulating effect even when bent can be provided.

  Embodiments of the present invention will be described below with reference to the drawings.

<<<< first embodiment >>>>
FIG. 1 is a perspective view showing a state when the core member 110 is housed in the outer packaging material 120. The vacuum heat insulating material 100 according to the first embodiment can be made by housing the core material part 110 in the outer packaging material 120 and sealing it, and making the inside of the outer packaging material 120 in a reduced pressure state.

<< Core material part 110 >>
<Shape of the core part 110>
FIG. 2 is a cross-sectional view showing the core member 110 used for the vacuum heat insulating material 100 in the first embodiment.

  The core part 110 shown in FIG. 2 includes one first core material 112 and three second core materials 114. The first core material 112 corresponds to the “first core material”, and the second core material 114 corresponds to the “second core material”.

  As shown in FIGS. 1 and 2, the first core material 112 has a substantially thin plate shape having a substantially constant thickness D1, a length L1, and a width W. Each of the three second core members 114 has a substantially plate shape having a substantially constant thickness d1, a length l1, and a width W. In the first embodiment, each of the three second core members 114 is formed such that the thickness d1 is larger than the thickness D1 of the first core member 112. Further, the second core material 114 is formed such that the length l1 is shorter than the length L1 of the first core material 112. Further, the second core material 114 is formed so that the width W is substantially the same as the width W of the first core material 112.

  As shown in FIGS. 1 and 2, three second core members 114 are arranged on the first core member 112 so as to overlap each other. The three second core members 114 are arranged so as to be adjacent to each other with a distance S therebetween. The three second core members 114 need only be superimposed on the first core member 112 and do not require a member for joining such as an adhesive or an adhesive tape. In addition, in order to arrange the three second core members 114 accurately and easily at a desired position of the first core member 112, a slight depression or groove corresponding to the size of the second core member 114 is provided. It is preferable to form on the surface of the first core material 112 by a process such as a pressing process.

  In the example shown in FIGS. 1 and 2, the three second core members 114 are arranged on the first core member 112, but are arranged on the first core member 112. The number of the second core members 114 may be at least one. As shown in FIGS. 3A and 3B to be described later, the number of the second core members 114 is set to two or more in consideration of bending in the thin layer portion N composed of only the first core member 112. It is preferable to do this.

  In this way, by stacking the three second core members 114 on the first core member 112, as shown in FIG. 2, the thin layer portion N consisting only of the first core member 112, and the first The thick layer portion K made of the core material 112 and the second core material 114 is formed. As described above, since the three second core members 114 are arranged so as to be adjacent to each other by the interval S, the thin layer portion N has the thickness D1, the length S, and the width W. The thick layer portion K has a substantially rectangular parallelepiped shape having a thickness (D1 + d1), a length l1, and a width W.

  In the first embodiment, since the core member 110 includes one first core member 112 and three second core members 114, the thin layer portion N includes only the first core member 112. The thick layer portion K is composed of the first core material 112 and the second core material 114, but the core material portion 110 further includes another layer, for example, a protective layer or the like. In addition, this further another layer and other members can also be included in the thin layer portion N and the thick layer portion K. That is, at least the first core material 112 is included in the thin layer portion N, and at least the first core material 112 and the second core material 114 are included in the thick layer portion K. The thickness should just be formed so that it may become thinner than the thickness of the thick layer part K. FIG.

  The sizes of the first core material 112 and the second core material 114 described above may be determined as appropriate so as to match the size of the apparatus or device in which the vacuum heat insulating material 100 is disposed. In particular, the thickness of the first core material 112 and the second core material 114 is not limited to the size of the device or device in which the vacuum heat insulating material 100 is disposed, but the first core material 112 and the second core material 112 described later. In consideration of the material of the core material 114, it may be determined as appropriate so as to achieve the required heat insulation efficiency. Furthermore, the interval S between the adjacent second core members 114 may be determined as appropriate in consideration of the ease of folding and the heat insulation efficiency, in addition to the size of the apparatus and equipment in which the vacuum heat insulating material 100 is disposed.

  As will be described later, when the vacuum heat insulating material 100 is folded, it can be folded at the thin layer portion N.

<Material of the first core material 112 and the second core material 114>
Although the 1st core material 112 and the 2nd core material 114 are not specifically limited, A fiber aggregate, an open-cell foam, etc. are used. A fiber assembly is preferable from the viewpoint of heat insulation and flexibility. From the viewpoint of workability, the fiber assembly is preferably used in a substantially plate shape as described above. When the fiber assembly is used as it is in the “wadding state” or in the refined “powdered state”, the handling property of the core material part 110 is deteriorated. The process of storing in 120 becomes complicated and the workability deteriorates.

  The fiber assembly is composed of inorganic fibers, organic fibers, or a mixture thereof.

  Examples of the inorganic fiber include glass fiber (glass wool), alumina fiber, slag wool fiber, silica fiber, rock wool, and the like.

  Examples of organic fibers include polyester fibers, acrylic fibers, polyethylene fibers, polypropylene fibers, nylon fibers, polyvinyl alcohol fibers, polyurethane fibers, polynosic fibers, rayon fibers, and other synthetic fibers, and natural fibers such as hemp, silk, cotton, and wool. Etc. An inorganic fiber and an organic fiber are used as single fiber which consists of 1 type, or multiple types of mixed fiber.

  In the first embodiment, glass wool is preferably used as the first core material 112 and the second core material 114. In this case, it is more desirable that the first core material 112 has a thickness of about 3 millimeters and the second core material 114 has a thickness of about 9 millimeters in a decompressed state.

  This glass wool is made into a substantially plate shape (mat shape) by a papermaking method (average fiber length is about 10 millimeters and average fiber diameter is about 3 micrometers). Moreover, this glass wool has a density of 270 kilograms / cubic meter in a decompressed state. Glass wool is excellent in heat insulation, but is slightly inferior in bendability, so it is preferably used as the second core material 114. When used as the first core material 112, the thickness is 6 mm or less, particularly 4 mm or less. It is preferable to do this.

  In the first embodiment, it is more preferable to use polyethylene terephthalate fibers (hereinafter referred to as PET fibers) as the first core material 112 and glass wool as the second core material 114. In this case, it is more preferable that the first core material 112 has a thickness of approximately 3 millimeters and the second core material 114 has a thickness of approximately 9 millimeters in a decompressed state.

  As this glass wool, the same one as described above is used. On the other hand, the PET fiber is a polyethylene terephthalate fiber having a fiber length of about 51 millimeters, which is obtained by processing the fiber into a substantially plate shape (sheet shape) by a needle punch method, and the sheet basis weight immediately after processing is 550 grams / square meter. . The PET fiber has a density of 220 kilograms / cubic meter under reduced pressure. The PET fiber is excellent in bendability and is particularly preferable for use as the first core material 112.

  Further, in the first embodiment, it is desirable to use PET fibers as the first core material 112 and to use a hard urethane foam as the second core material 114. In this case, it is more desirable that the first core material 112 has a thickness of approximately 3 millimeters and the second core material 114 has a thickness of approximately 10 millimeters in a decompressed state.

  The same PET fibers as those described above are used. On the other hand, the rigid urethane foam is an open-cell rigid urethane foam (density is 55 kilograms / cubic meter, average cell diameter is 75 micrometers, and closed cell ratio is 5%). The hard urethane foam is lightweight, but it is preferably used as the second core material 114 because of its poor bendability.

  As in the above-described three examples, the thickness and material of the first core material 112 and the thickness and material of the second core material 114 are appropriately determined, whereby the bending rigidity of the thin layer portion N is increased. The bending rigidity of the layer portion K can be made smaller.

  In addition, since the heat insulation efficiency can be improved by making the thickness of the 2nd core material 114 thicker than what was shown in the three examples mentioned above, it becomes more preferable.

<< Outer packaging material 120 >>
<Shape of outer packaging material 120>
As described above, FIG. 1 is a perspective view showing a state when the core member 110 is housed in the outer packaging material 120.

  As shown in FIG. 1, the outer packaging material 120 has a bag-like shape formed by two sheet-like outer packaging sheets 122a and 122b. Each of the two outer sheets 122a and 122b has a square or rectangular shape having the same size. The two outer sheets 122a and 122b can be formed in a bag shape by overlapping each other and heat-sealing the edges of three sides of the four sides of the two outer sheets 122a and 122b. One side that is not heat-sealed becomes the opening 124 of the bag-shaped outer packaging material 120. By making the outer packaging material 120 into a bag-like shape, the inside of the outer packaging material 120 is decompressed, and then one side forming the opening 124 is heat-sealed, whereby the vacuum heat insulating material 100 can be formed. Since it is sufficient to heat seal only, work efficiency can be improved.

  Each of the two outer packaging sheets 122a and 122b includes a plurality of layers (not shown) including an outermost layer and an innermost layer. The innermost layers of the outer packaging sheets 122a and 122b are configured to be the back surface of the bag-shaped outer packaging material 120, that is, the innermost layer is configured to be the inner surface of the bag-shaped outer packaging material 120. By doing in this way, the vacuum state inside the bag-shaped outer packaging material 120 can be sufficiently maintained.

  The size of the outer packaging material 120 (the outer packaging sheets 122a and 122b) is preferably larger than the core material portion 110 so that the core material portion 110 can be stored efficiently and accurately.

<Material of the outer sheet 122a and 122b>
As the outer sheet 122a and 122b, any sheet can be used as long as it has gas barrier properties, can maintain the inside at a reduced pressure, and can be heat sealed. As described above, each of the envelope sheets 122a and 122b is composed of a single layer or a plurality of layers, and various materials are used for each of the layers.

  As a preferable specific example of each of the outer sheet 122a and 122b, there is the following gas barrier film. For example, a four-layer gas barrier film in which the outermost layer is nylon, the first intermediate layer is aluminum-deposited PET (polyethylene terephthalate), the second intermediate layer is aluminum foil, and the innermost layer is high-density polyethylene. There is. There is a gas barrier film having a three-layer structure in which the outermost layer is a polyethylene terephthalate resin, the intermediate layer is an aluminum foil, and the innermost layer is a high-density polyethylene resin. Furthermore, there is a gas barrier film having a three-layer structure in which the outermost layer is a PET resin, the intermediate layer is an ethylene-vinyl alcohol copolymer resin having an aluminum vapor deposition layer, and the innermost layer is a high-density polyethylene resin.

<< Getter Agent 130 >>
<Function of getter agent 130>
A getter agent 130 (not shown) may be provided in the outer packaging material 120. After the inside of the outer packaging material 120 is decompressed and the opening 124 is heat-sealed, gas, for example, outgas or moisture may be generated from the core material portion 110 inside the outer packaging material 120. In addition, gas or moisture may enter from the outside to the inside of the outer packaging material 120. For this reason, it is preferable to store the getter agent 130 capable of adsorbing gas and moisture together with the core member 110 in the outer packaging material 120.

  In this way, by storing the getter agent 130 inside the outer packaging material 120, gas and moisture can be absorbed by the getter agent 130, so that the heat insulating effect of the vacuum heat insulating material 100 can be maintained for a longer time.

<Number and arrangement of getter agents 130>
As shown in FIG. 3, the vacuum heat insulating material 100 is formed by housing the core part 110 in a bag-shaped outer packaging material 120 and heat-sealing the opening. For this reason, since the inside of the outer packaging material 120 becomes one space closed by the entire vacuum heat insulating material 100, only one getter agent 130 may be disposed in the vacuum heat insulating material 100.

  Further, the getter agent 130 can adsorb gas and moisture over the entire vacuum heat insulating material 100 by being positioned at or near the center of the vacuum heat insulating material 100. The function of can be demonstrated.

  Furthermore, since the amount of gas and moisture changes depending on the size of the vacuum heat insulating material 100 and the core material part 110, the size of the getter agent 130 also depends on the size of the vacuum heat insulating material 100 and the core material part 110. What is necessary is just to determine suitably.

<Material of getter agent 130>
The substance capable of adsorbing gas and moisture is not particularly limited, and examples of substances that physically adsorb gas and moisture include activated carbon, silica gel, aluminum oxide, molecular sieve, and zeolite. Also, those that chemically adsorb gas, moisture, etc. are, for example, calcium oxide, barium oxide, calcium chloride, magnesium oxide, magnesium chloride, metal powder materials such as iron and zinc, barium-lithium alloys, zirconium There are system alloys.

<< Vacuum insulation 100 >>
As shown in FIG. 1, after the core part 110 is stored in the bag-shaped outer packaging material 120, the inside of the outer packaging material 120 is decompressed and the opening 124 is heat-sealed to maintain the decompressed state. The vacuum heat insulating material 100 can be formed.

<< Bending of vacuum heat insulating material 100 >>
FIG. 3 is a cross-sectional view showing a process of bending the vacuum heat insulating material 100. FIG. 3A shows a mode of bending to the side where the second core material 114 is arranged, and FIG. 3B shows a mode of bending to the side where the second core material 114 is not arranged. 3A and 3B, the outer packaging material 120 is omitted in order to clearly show the first core material 112 and the second core material 114.

  Even when it is bent as shown in FIG. 3A or when it is bent as shown in FIG. 3B, it is bent at the thin layer portion N, and a bent portion is formed at the thin layer portion N.

  When bent as shown in FIG. 3A, that is, when bent in the counterclockwise direction, the ends and end surfaces of the adjacent second core members 114 come into contact with each other or are pressed against each other. Therefore, heat insulation can be performed not only by the first core material 112 but also by the second core material 114, and the heat insulation efficiency of the bent portion can be made the same as that of the thick layer portion K.

  When it is bent as shown in FIG. 3B, that is, when it is bent clockwise, the end portions and end faces of the adjacent second core members 114 do not come into contact with each other or are pressed against each other. Since the force required for the bending process can be reduced, the bending can be facilitated.

  Whether it is bent as shown in FIG. 3A or as shown in FIG. 3B depends on the shape of the apparatus or equipment in which the vacuum heat insulating material 100 is arranged, the required heat insulation efficiency, and the ease of bending. What is necessary is just to decide suitably according to. In addition, the angle at which the vacuum heat insulating material 100 is bent may be determined according to the shape of the apparatus or device in which the vacuum heat insulating material 100 is disposed. In any case, it is preferable to bend so that the bent portion is formed only in the thin layer portion N.

<<< Second Embodiment >>>
FIG. 4A is a cross-sectional view showing a core material portion 210 used for the vacuum heat insulating material 200 in the second embodiment.

  The core part 210 in the second embodiment includes a first core material 112 and three second core materials 114. These are the same as the first core material 112 and the second core material 114 in the first embodiment described above, and have the same size, shape, material and function. As shown to a), the same code | symbol was attached | subjected. The first core material 112 corresponds to the “first core material”, and the second core material 114 corresponds to the “second core material”.

  In addition, the outer packaging material (not shown) used for the vacuum heat insulating material 200 in the second embodiment has the same materials and functions as the outer packaging material 120 in the first embodiment. Moreover, the getter agent (not shown) used for the vacuum heat insulating material 200 in the second embodiment also has the same shape, size, material, and function as those in the first embodiment. The vacuum heat insulating material 200 according to the second embodiment can be made by housing the core part 210 in the outer packaging material 120 and sealing it, and making the inside of the outer packaging material 120 in a reduced pressure state.

  In the second embodiment, unlike the first embodiment, the three second core members 114 are arranged in close proximity to each other. Also in the second embodiment, three second core members 114 are arranged on the first core member 112 so as to overlap each other, and like the first embodiment, three second core members 114 are arranged. The core material 114 only needs to be superimposed on the first core material 112, and does not require a member such as an adhesive or an adhesive tape. As in the first embodiment, the size of the second core material 114 is set in order to accurately and easily arrange the three second core materials 114 at desired positions of the first core material 112. It is preferable to form some depressions and grooves corresponding to the thickness on the surface of the first core material 112 by a process such as a pressing process.

  In the example shown in FIG. 4A, the three second core members 114 are arranged on the first core member 112, but are arranged on the first core member 112. The number of the second core members 114 may be at least one.

  In this way, by stacking the three second core members 114 on the first core member 112, as in the first embodiment, as shown in FIG. A thin layer portion N made of only the material 112 and a thick layer portion K made of the first core material 112 and the second core material 114 are formed. As described above, since the three second core members 114 are arranged so as to be closely adjacent to each other, unlike the core member portion 210 of the first embodiment, the thin layer portion N is It has a thickness D1 and a width W and has a very short shape, that is, an approximately thin-film shape, and the thick layer portion K has a thickness (D1 + d1), a length l1 and a width W. It has a rectangular parallelepiped shape.

  In the case of the second embodiment, the thin layer portion N has a thin film shape and is difficult to recognize, but can be folded if it can be folded between adjacent thick layer portions K. The portion that can be formed is the thin layer portion N, and the presence of the thin layer portion N can be confirmed by bending.

  Also in the second embodiment, when the core part 210 includes another layer, for example, a protective layer or the like, the other layer or the other member is also a thin layer part N. Or the thick layer portion K. That is, at least the first core material 112 is included in the thin layer portion N, and at least the first core material 112 and the second core material 114 are included in the thick layer portion K. The thickness should just be formed so that it may become thinner than the thickness of the thick layer part K. FIG.

  The size of the first core material 112 and the second core material 114 described above may be determined as appropriate so as to match the size of the apparatus or device in which the vacuum heat insulating material 200 is disposed. In particular, the thickness of the first core material 112 and the second core material 114 is not limited to the size of the device or equipment in which the vacuum heat insulating material 200 is disposed, and the first core material 112 and the second core material described later are used. In consideration of the material of the core material 114, it may be determined as appropriate so as to achieve the required heat insulation efficiency. Furthermore, the interval S between the adjacent second core members 114 may be determined as appropriate in consideration of the ease of folding and the heat insulation efficiency, in addition to the size of the apparatus and equipment in which the vacuum heat insulating material 200 is disposed.

  Similarly to the vacuum heat insulating material 100 of the first embodiment, the vacuum heat insulating material 200 can be bent by bending at the thin layer portion N.

<<< Third Embodiment >>>
FIG. 4B is a cross-sectional view showing the core part 310 used for the vacuum heat insulating material 300 in the third embodiment.

  The core part 310 in the third embodiment includes a first core material 112 and three second core materials 314. The first core material 112 corresponds to a “first core material”, and the second core material 314 corresponds to a “second core material”. The first core material 112 is the same as the first core material 112 in the first embodiment and the second embodiment described above, and has the same size, shape, material, and function. In addition, as shown in FIG. The second core material 314 has the same material and function as the second core material 114 except that the second core material 314 has a different shape from the second core material 114.

  In addition, the outer packaging material (not shown) used for the vacuum heat insulating material 300 in the third embodiment has the same materials and functions as the outer packaging material 120 in the first embodiment. Moreover, the getter agent (not shown) used for the vacuum heat insulating material 300 in the third embodiment also has the same shape, size, material, and function as those in the first embodiment. The vacuum heat insulating material 300 according to the third embodiment can be made by housing the core material portion 310 in the outer packaging material 120 and sealing it, and reducing the pressure inside the outer packaging material 120.

  As shown in FIG. 4B, the second core member 314 has a substantially trapezoidal cross-sectional shape, includes two inclined surfaces, an upper surface, and a lower surface. As a whole of the second core member 314, It has an approximately plate shape. The second core member 314 is formed so that the upper surface is smaller than the lower surface. In the second core member 314, the portion where the two inclined surfaces are formed is a part, and the distance between the upper surface and the lower surface is substantially constant at the portion where the upper surface is formed. Therefore, the distance between the upper surface and the lower surface can be set to the thickness d1 of the second core member 314 at the location where the upper surface is formed. Thus, the overall approximate thickness of the second core material 314 can be the thickness d1 of the second core material 314.

  By doing so, the second core member 314 has a substantially plate-like shape having a substantially constant thickness d1, a length l1, and a width W. The second core material 314 is formed so that the thickness d1 is thicker than the thickness D1 of the first core material 112. The second core member 314 is formed so that the length l1 of the lower surface is shorter than the length L1 of the first core member 112. Further, the second core member 314 is formed so that the width W is substantially the same as the width W of the first core member 112.

  Also in the third embodiment, as shown in FIG. 4B, three second core members 314 are arranged on the first core member 112 so as to overlap each other. The three second core members 314 are arranged such that their lower surfaces are separated by a distance S and are adjacent to each other. The three second core members 314 only need to be superimposed on the first core member 112, and a member for joining such as an adhesive or an adhesive tape is not required. As in the first embodiment and the second embodiment, in order to accurately and easily arrange the three second core members 314 at desired positions of the first core member 112, It is preferable that a slight depression or groove corresponding to the size of the lower surface of the second core material 314 is formed on the surface of the first core material 112 by a process such as a pressing process.

  In the example shown in FIG. 4B, the three second core members 314 are arranged on the first core member 112, but are arranged on the first core member 112. The number of the second core materials 314 may be at least one.

  As shown in FIG. 4B, the three second core members 314 are stacked on the first core member 112 in the same manner as in the first embodiment and the second embodiment. Thus, the thin layer part N which consists only of the 1st core material 112, and the thick layer part K which consists of the 1st core material 112 and the 2nd core material 314 are formed. As described above, since the three second core members 314 are arranged so as to be adjacent to each other by the interval S, the thin layer portion N has the thickness D1, the length S, and the width W. The thick layer portion K has a substantially hexagonal column shape having an approximate thickness (D1 + d1), an approximate length l1, and a width W.

  Also in the third embodiment, when the core part 310 includes another layer, for example, a protective layer or the like, the further layer or other member is also a thin layer N. Or the thick layer portion K. That is, at least the first core material 112 is included in the thin layer portion N, and at least the first core material 112 and the second core material 314 are included in the thick layer portion K. The thickness should just be formed so that it may become thinner than the thickness of the thick layer part K. FIG.

  The sizes of the first core material 112 and the second core material 314 described above may be determined as appropriate so as to match the size of the apparatus or device in which the vacuum heat insulating material 300 is disposed. In particular, the thicknesses of the first core material 112 and the second core material 314 include the first core material 112 and the second core, in addition to the size of the apparatus and equipment in which the vacuum heat insulating material 300 is disposed. In consideration of the material of the material 314, it may be determined as appropriate so as to achieve the required heat insulation efficiency. Furthermore, the spacing S between the adjacent second core members 314 may be determined as appropriate in consideration of the ease of folding and the heat insulation efficiency, in addition to the size of the apparatus and equipment in which the vacuum heat insulating material 300 is disposed.

  When the vacuum heat insulating material 300 is folded, it can be folded at the thin layer portion N. In particular, in the third embodiment, the vacuum heat insulating material 300 is bent in the manner shown in FIG. 3A, that is, in the manner in which the second heat insulating material 314 is folded. In this case, since the facing inclined surfaces of the adjacent second core members 314 are in contact with each other or pressed against each other, the area of contact or pressing can be increased, and the second core material can be increased. Heat insulation can be accurately performed by abutting and pressing 314, and the heat insulation efficiency of the bent portion can be further increased.

  Since the inclined surface is formed on the second core member 314, the vacuum heat insulating material 300 can be bent without excessive force, and the bending work can be facilitated.

<<< Fourth embodiment >>>>
FIG.4 (c) is sectional drawing which shows the core part 410 used for the vacuum heat insulating material 400 in 4th Embodiment.

  The core material portion 410 in the fourth embodiment includes a first core material 112 and three second core materials 314. These are the same as the first core material 112 and the second core material 314 in the third embodiment described above, and have the same size, shape, material and function. As shown in (c), the same code | symbol was attached | subjected. The first core material 112 corresponds to a “first core material”, and the second core material 314 corresponds to a “second core material”.

  The outer packaging material (not shown) used for the vacuum heat insulating material 400 in the fourth embodiment also has the same materials and functions as the outer packaging material 120 in the first to third embodiments. Have. Further, the getter agent (not shown) used for the vacuum heat insulating material 400 in the fourth embodiment is also similar in shape, size and material to those in the first to third embodiments, And has a function. The vacuum heat insulating material 400 according to the fourth embodiment can be made by housing the core material portion 410 in the outer packaging material 120 and sealing it, and making the inside of the outer packaging material 120 in a reduced pressure state.

  Similar to the third embodiment, the second core member 314 has a substantially trapezoidal cross-sectional shape, includes two inclined surfaces, an upper surface, and a lower surface, and has an approximately plate shape. For this reason, also in the second core member 314 in the fourth embodiment, the distance between the upper surface and the lower surface is set to the thickness d1 of the second core member 314 at the place where the upper surface is formed. Can do. Thus, the overall approximate thickness of the second core material 314 can be the thickness d1 of the second core material 314.

  In the fourth embodiment, as shown in FIG. 4C, the three second core members 314 are arranged so that the lower surfaces of the adjacent second core members 314 are in close contact with each other. The three second core members 314 only need to be superimposed on the first core member 112, and a member for joining such as an adhesive or an adhesive tape is not required. As in the first to third embodiments, in order to accurately and easily arrange the three second core members 314 at desired positions of the first core member 112, It is preferable that a slight depression or groove corresponding to the size of the lower surface of the second core material 314 is formed on the surface of the first core material 112 by a process such as a pressing process.

  In the example shown in FIG. 4C, the three second core members 314 are arranged on the first core member 112, but are arranged on the first core member 112. The number of the second core materials 314 may be at least one.

  As described above, by superimposing the three second core members 314 on the first core member 112, as in the first to third embodiments, FIG. As shown, a thin layer portion N consisting only of the first core material 112 and a thick layer portion K consisting of the first core material 112 and the second core material 314 are formed. As described above, since the three second core members 314 are arranged so as to be closely adjacent to each other, the core member 110 of the first embodiment and the core member of the third embodiment. Unlike the portion 310, the thin layer portion N has a thickness D1 and a width W and has a very short shape, that is, an approximately thin film shape, and the thick layer portion K has a thickness (D1 + d1). ), A length 11 and a width W, and a substantially hexagonal column shape.

  In the case of the fourth embodiment as well, as in the second embodiment, the thin layer portion N has a thin film shape and is difficult to recognize, but between the adjacent thick layer portions K. If it can be folded, the portion that can be folded is the thin layer portion N, and the presence of the thin layer portion N can be confirmed by folding.

  Furthermore, also in this 4th Embodiment, when the core part 410 contains another layer, for example, a protective layer etc., and another member, this another layer and other member are also thin layers. It can be included in the portion N and the thick layer portion K. That is, at least the first core material 112 is included in the thin layer portion N, and at least the first core material 112 and the second core material 314 are included in the thick layer portion K. The thickness should just be formed so that it may become thinner than the thickness of the thick layer part K. FIG.

  The size of the first core material 112 and the second core material 314 described above may be determined as appropriate so as to match the size of the apparatus or device in which the vacuum heat insulating material 400 is disposed. In particular, the thicknesses of the first core material 112 and the second core material 314 include the first core material 112 and the second core, in addition to the size of the apparatus and equipment in which the vacuum heat insulating material 400 is disposed. In consideration of the material of the material 314, it may be determined as appropriate so as to achieve the required heat insulation efficiency. Furthermore, the interval S between the adjacent second core members 314 may be determined as appropriate in consideration of the ease of folding and the heat insulation efficiency, in addition to the size of the apparatus and equipment in which the vacuum heat insulating material 400 is disposed.

  When the vacuum heat insulating material 400 is folded, it can be folded at the thin layer portion N. In particular, in the fourth embodiment, the vacuum heat insulating material 300 is bent in the manner shown in FIG. 3A, that is, in the manner in which the second heat insulating material 314 is folded. In this case, since the facing inclined surfaces of the adjacent second core members 314 are in contact with each other or pressed against each other, the area of contact or pressing can be increased, and the second core material can be increased. Heat insulation can be accurately performed by abutting and pressing 314, and the heat insulation efficiency of the bent portion can be further increased. Further, in the fourth embodiment, since the three second core members 314 are arranged so that the lower surfaces of the adjacent second core members 314 are in close contact with each other, when the vacuum heat insulating material 400 is bent, Since the thin layer portion N and the thick layer portion K are positioned so that there is no gap between the thin layer portion N and the thick layer portion K, heat insulation can be performed more accurately.

  Moreover, since the inclined surface is formed in the 2nd core material 314, the vacuum heat insulating material 300 can be bent reasonably without applying excessive force, and a bending operation can be made easy.

<<< Fifth Embodiment >>>
FIG. 5A is a cross-sectional view showing a core part 510 used for the vacuum heat insulating material 500 in the fifth embodiment.

  The core member 510 in the fifth embodiment includes four first core members 512 and three second core members 114. The first core material 512 corresponds to the “first core material”, and the second core material 114 corresponds to the “second core material”. The second core material 114 is the same as the second core material 114 in the first embodiment and the second embodiment described above, and has the same size, shape, material and function. And the same code | symbol was attached | subjected as shown to Fig.5 (a). The first core member 512 has the same material and function as the first core member 112 except that the shape is different from that of the first core member 112.

  In addition, the outer packaging material (not shown) used for the vacuum heat insulating material 500 in the fifth embodiment has the same materials and functions as the outer packaging material 120 in the first embodiment. Further, the getter agent (not shown) used for the vacuum heat insulating material 500 in the fifth embodiment also has the same shape, size, material, and function as those in the first embodiment. The vacuum heat insulating material 500 according to the fifth embodiment can be made by accommodating the core material portion 510 in the outer packaging material 120 and sealing it, and making the inside of the outer packaging material 120 in a reduced pressure state.

  As shown in FIG. 5A, each of the four first core members 512 has a substantially plate shape having a substantially constant thickness D1, a length L5, and a width W. Each of the three second core members 114 has a substantially plate shape having a substantially constant thickness d1, a length l1, and a width W. Also in the fifth embodiment, each of the three second core members 114 is formed such that the thickness d1 is larger than the thickness D1 of each of the first core members 512. Further, the second core material 114 is formed such that the length l1 is longer than the length L5 of the first core material 512. Further, the second core member 114 is formed so that the width W is substantially the same as the width W of the first core member 512.

  In the fifth embodiment, the first core member 512 is disposed so that a part thereof overlaps a part of the second core member 114. The four first core members 512 are arranged so as to be adjacent to each other with an interval S5. On the other hand, the three second core members 114 are arranged so as to be adjacent to each other with an interval S therebetween. The three second core members 114 need only be superimposed on the first core member 512, and do not require a member for joining such as an adhesive or an adhesive tape. In order to accurately and easily arrange the three second core members 114 at desired positions of the first core member 512, some depressions or grooves corresponding to the size of the second core member 114 are provided. It is preferable to form the surface of the first core member 512 by a process such as a pressing process.

  In the example shown in FIG. 5A, the three second core members 114 are arranged on the four first core members 512. However, the number of the first core members 512, The number of the second core members 114 may be at least one.

  Thus, by laminating the three second core members 114 on the four first core members 512, as shown in FIG. 5 (a), a thin layer portion consisting only of the first core member 512 is obtained. N and a thick layer portion K composed of the first core member 512 and the second core member 114 are formed. As described above, since the three second core members 114 are arranged so as to be adjacent to each other by the interval S, the thin layer portion N has the thickness D1, the length S, and the width W. The thick layer portion K has a substantially rectangular parallelepiped shape, and has a thickness (D1 + d1), a length in which the second core material 114 and the first core material 512 overlap, and a width W. Have In the fifth embodiment, the layer Y composed only of the second core material 114 is also formed.

  In the fifth embodiment, since the core part 510 includes four first core members 512 and three second core members 114, the thin layer portion N includes only the first core member 512. The thick layer portion K is composed of the first core material 512 and the second core material 114, but the core material portion 510 further includes another layer, for example, a protective layer or the like. In addition, this further another layer and other members can also be included in the thin layer portion N and the thick layer portion K. That is, the thin layer portion N includes at least the first core member 512, and the thick layer portion K includes at least the first core member 512 and the second core member 114, and the thin layer portion N includes The thickness should just be formed so that it may become thinner than the thickness of the thick layer part K. FIG.

  The size of the first core material 512 and the second core material 114 described above may be determined as appropriate so as to match the size of the apparatus or device in which the vacuum heat insulating material 500 is disposed. In particular, the thickness of the first core member 512 and the second core member 114 is not limited to the size of the device or equipment in which the vacuum heat insulating material 500 is disposed, but also the first core member 512 and the second core member. In consideration of the material of the material 114, it may be determined as appropriate so as to achieve the required heat insulation efficiency. Furthermore, the interval S between the adjacent second core members 114 may be determined as appropriate in consideration of the ease of folding and the heat insulation efficiency, in addition to the size of the apparatus and equipment in which the vacuum heat insulating material 500 is disposed.

  Also in the fifth embodiment, the vacuum heat insulating material 200 can be bent by bending at the thin layer portion N.

<<< Sixth Embodiment >>>
FIG.5 (b) is sectional drawing which shows the core part 610 used for the vacuum heat insulating material 600 in 6th Embodiment.

  The core part 610 according to the sixth embodiment includes a first core member 512 and a second core member 114. These are the same as the first core member 512 and the second core member 114 in the fifth embodiment described above, and have the same size, shape, material, and function. As shown in (b), the same code | symbol was attached | subjected. The first core material 512 corresponds to the “first core material”, and the second core material 114 corresponds to the “second core material”.

  In the core member 510 in the fifth embodiment, all the second cores are on the same side with respect to the first core member 512 (on the upper side of the first core member 512 in FIG. 5A). A material 114 is arranged. On the other hand, as shown in FIG. 5B, the core material portion 610 in the sixth embodiment is on either side (FIG. 5B) with respect to the first core material 512. The second core material 114 is also disposed on the upper and lower sides of the first core material 512.

  By doing in this way, according to the shape of the apparatus and apparatus which arrange | positions the vacuum heat insulating material 600, it becomes easy to bend the vacuum heat insulating material 600 into what is called zigzag which bend | folds in a Z shape or is alternately bent.

<<< Seventh Embodiment >>>
FIG.5 (c) is sectional drawing which shows the core part 710 used for the vacuum heat insulating material 700 in 7th Embodiment.

  The core material portion 710 in the seventh embodiment includes a first core material 712 and a second core material 114. The second core material 114 is the same as the second core material 114 in the first embodiment and the fifth embodiment described above, and has the same size, shape, material and function. As shown in FIG. 5 (b). The first core material 712 is the same in thickness, width, material, and function except that the length is different from the second core material 114 in the first embodiment and the fifth embodiment. It is. The first core material 712 corresponds to the “first core material”, and the second core material 314 corresponds to the “second core material”.

In the core material portion 510 of the fifth embodiment and the core material portion 610 of the sixth embodiment described above, one first core material 512 and one second core material 114 are only partly. They were arranged so as to overlap. The core part 710 in the seventh embodiment includes an aspect in which the second core material 114 overlaps the first core material 712 and a part of the second core material 114, and the second core material 114 It arrange | positions so that both the aspect which overlaps as a whole may be included.
By doing in this way, according to the shape of the apparatus and apparatus which arrange | position the vacuum heat insulating material 700, the vacuum heat insulating material 600 can be made easy to bend.

It is a perspective view which shows the outline of a vacuum heat insulating material. It is sectional drawing which shows the core part 110 of 1st Embodiment. It is sectional drawing which shows the aspect which bends the core material part 110 of 1st Embodiment. Sectional drawing (a) which shows core material part 210 of 2nd Embodiment, Sectional drawing (b) which shows core material part 310 of 3rd Embodiment, and Core material part of 4th Embodiment It is sectional drawing (c) which shows 410. FIG. Sectional drawing (a) which shows core material part 510 of 5th Embodiment, Sectional drawing (b) which shows core material part 610 of 6th Embodiment, and Core material part of 7th Embodiment 710 is a sectional view (c) showing 710.

Explanation of symbols

100, 200, 300, 400, 500, 600, 700 Vacuum heat insulating material 110, 210, 310, 410, 510, 610, 710 Core material part 112, 512, 712 First core material 114, 314, Second core Material 120 Outer packaging material K Thick layer N Thin layer

Claims (7)

A vacuum heat insulating material including a core material part, and an outer packaging material that houses the core material part and can maintain the inside in a reduced pressure state,
The core part is
At least one first core material;
And a separate body from the first core material, and at least one second core material,
The second core material overlaps at least partly with the first core material;
A thick layer portion including the first core material and the second core material;
A vacuum heat insulating material, characterized in that a thin layer portion including the first core material and having a thickness smaller than the thick layer portion is formed.   The vacuum heat insulating material according to claim 1, wherein a bending rigidity of the thin layer portion is smaller than a bending rigidity of the thick layer portion. The first core member has a substantially plate shape having a first thickness,
The vacuum heat insulating material according to claim 1 or 2, wherein the second core member has a substantially plate shape having a second thickness larger than the first thickness. At least two of the second core members are juxtaposed along the thin layer portion apart from each other;
The vacuum heat insulating material according to any one of claims 1 to 3, wherein the thin layer portion is disposed between the thick layer portions. The thin layer portion has a bent portion,
The vacuum heat insulating material according to claim 4, wherein the two thick layer portions sandwiching the thin layer portion having the bent portion form a predetermined angle. A vacuum heat insulating material including a core material part, and an outer packaging material that houses the core material part and can maintain the inside in a reduced pressure state,
The core part is
A substantially flat single first core material;
A plurality of second core members that are smaller than the first core member and are substantially flat.
The plurality of second core members are spaced apart from each other and arranged side by side on the first core member,
The vacuum heat insulating material, wherein the first core member has a bending rigidity smaller than that of the plurality of second core members.   The thickness of the said 1st core material is a vacuum heat insulating material of Claim 6 thinner than the thickness of the said 2nd core material.

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