CN100359272C - Refrigerator and vacuum insulation material and manufacturing method thereof - Google Patents

Abstract

The procedure of the manufacturing method of the refrigerator of the present invention is as follows: the new material inorganic fiber assembly (7) is produced into a thin plate shape, and the waste core material inorganic fiber assembly (6) using the waste core material composed of the inorganic fiber assembly is produced. into a thin plate. Next, the new material inorganic fiber assembly (7) and the waste core material inorganic fiber assembly (6) are laminated, and by soaking the adhesive material in this laminate and performing hot pressing, the The laminated parts are bonded and pressed to a prescribed thickness to form a core material raw material (2A) from which edge material is removed to form a core material (2). Then, put the core material (2) and the absorbing part (3) in the outer covering material (1) made of an air-impermeable film, vacuumize and seal to make a vacuum heat insulating material (50). Then, after the vacuum heat insulating material (50) is arranged between the outer case and the inner case, the space between the outer case (22) and the inner case (23) is filled with foam heat insulating material (24) to form a heat insulator.

Description

Refrigerator and vacuum insulation material and manufacturing method thereof

technical field

The present invention relates to a refrigerator using a vacuum heat insulating material, a vacuum heat insulating material, and a manufacturing method thereof.

Background technique

In recent years, from the viewpoint of global warming, the need to reduce the electric energy consumed by home appliances has been publicized. Refrigerators consume a lot of electrical energy among home appliances, and reducing the electrical energy consumption of refrigerators has become an essential measure to deal with global warming. When the amount of loading inside the refrigerator is constant, since the power consumption of the refrigerator depends largely on the efficiency of the compressor used for cooling in the refrigerator, and the insulation performance of the heat insulating material related to the heat leaked from the refrigerator, so, Improving the efficiency of compressors in refrigerators, as well as improving the performance of insulation materials is very important.

Therefore, in order to improve the performance of heat insulating materials, vacuum heat insulating materials have been used in refrigerators. As a conventional refrigerator using a vacuum heat insulating material, there is a refrigerator disclosed in JP-A-2001-165557 (Patent Document 1). The refrigerator in Patent Document 1 uses a covering material made of an air-tight film to cover a core material made of an aggregate of thin plate-shaped inorganic fibers, and then vacuumizes and seals the inside to make a vacuum insulation material. The vacuum heat insulating material is arranged in the space formed by the outer box body and the inner box body, and then the foaming heat insulating material is filled around it to form the heat insulating box wall.

On the other hand, in order to recycle the insulation materials of refrigerators to realize effective utilization of resources, it may be considered to use waste foam insulation materials as vacuum insulation materials. Japanese Unexamined Patent Application Publication No. 2001-349664 (Patent Document 2) discloses a refrigerator using scrap materials as vacuum insulation materials. The vacuum insulation material used in the refrigerator of this patent document 2 is to crush the waste foam insulation material into fine powder with a jet crushing type pulverization device, and make it with almost no independent air bubbles left, and make it into open cells structure of the foamed heat insulating powder, and then, in this foamed heat insulating powder, mix the bonding material, put this mixture into the mold and carry out hot press forming, just obtain the foaming heat insulating powder with bonding material Insulation material for the core material.

In the refrigerator of Patent Document 1, since an aggregate of thin plate-shaped inorganic fibers is used as the core material of the vacuum heat insulating material, it has the advantages of good heat insulating performance and high strength. However, in Patent Document 1, there is no disclosure about the use of discarded core materials to produce a core material of a thin plate-shaped inorganic fiber assembly, and there is still a problem of how to effectively utilize resources.

In addition, in the refrigerator of Patent Document 2, since the waste foam insulation material is made into foam heat insulation powder and then made into the core material of the vacuum heat insulation material, it is difficult to obtain such as using a composite material made of inorganic fibers. The heat insulation performance and strength of the vacuum insulation material of the core material composed of solid body. In addition, in Patent Document 2, there is no information on recovery of waste of core materials of vacuum insulation materials.

In addition, the core material composed of thin plate-shaped inorganic fiber aggregates is mostly a laminate in which the thin plate-shaped inorganic fiber aggregates are laminated and bonded with an adhesive material. Because of alignment and other reasons, it cannot be used as a core material after cutting. This cut-off edge material is in a long and thin rectangle, cannot be reused, and is generally discarded. Therefore, there is also a problem of effectively utilizing such offcuts.

Therefore, it has been considered to sandwich the coarsely pulverized scrap of the inorganic fiber aggregates between thin plate-shaped inorganic fiber aggregates, add a bonding material therein, and form a vacuum heat insulating material after thermoforming. However, since the core material of this vacuum insulation material is hot-pressed together with the thin-plate-shaped inorganic fiber aggregate, there is a problem that the bonding between the pulverized materials is not always sufficient and the strength is poor.

Contents of the invention

It is an object of the present invention to provide a refrigerator and a vacuum heat insulating material which can effectively utilize resources and use a vacuum heat insulating material excellent in heat insulating performance and high in strength, and a manufacturing method thereof.

In order to achieve the above object, the manufacturing method of the refrigerator of the present invention is characterized in that the new material inorganic fiber aggregate is made into a thin plate; the waste core material composed of the inorganic fiber aggregate is used to make the waste core inorganic fiber aggregate; The above-mentioned new material inorganic fiber aggregate and the above-mentioned waste core material inorganic fiber aggregate are laminated; by soaking the adhesive material in this laminate and performing hot press processing, the laminate is bonded with the adhesive material rise and press to a specified thickness to form a core raw material, and remove edge material from the above-mentioned core material raw material to form a core material; the above-mentioned core material and the absorbent member covered with the packaging material are stored in a box made of an air-impermeable film. In the outer cladding material, vacuumize and seal to make a vacuum insulation material; after the above-mentioned vacuum insulation material is arranged between the outer box and the inner box, it is filled in the space between the above-mentioned outer box and the inner box Foam insulation material to form an insulator.

A preferred specific structure according to the present invention is as follows.

(1) The waste core material inorganic fiber aggregate is formed into a thin plate shape by pulverizing the waste core material into a pulverized product and hot pressing.

(2) In addition to the above (1), the pulverized material is dehydrated by soaking in an aqueous solution of boric acid, and compressed so that the fibers are substantially parallel.

In addition, in order to achieve the above object, the structure of the refrigerator of the present invention is that the core material and the absorbing part covered with the packaging material are stored in the outer covering material, and the vacuum heat insulating material after vacuumizing and sealing is arranged between the outer box and the inner box. between the boxes, and fill the space between the above-mentioned outer box and the above-mentioned inner box with a foaming heat-insulating material to form a heat-insulating body, and it is characterized in that the above-mentioned core material is a thin plate-shaped new material inorganic fiber assembly and a waste core The waste core material inorganic fiber aggregates are laminated, and the waste core material inorganic fiber aggregates are made by making the waste core materials composed of inorganic fiber aggregates into a thin plate shape, and then these laminated inorganic fiber aggregates are hot-pressed, A laminate bonded with an adhesive material is formed.

A preferred specific structure according to the present invention is as follows.

(1) The above waste core material inorganic fiber aggregate is an aggregate obtained by pulverizing the waste material of the core material and subjecting it to hot press processing.

In addition, in order to achieve the above object, the structure of the refrigerator of the present invention is that the core material and the absorbent material wrapped with the packaging material are stored in the outer covering material, and the vacuum heat insulating material after vacuumizing and sealing is arranged between the outer box and the inner box. between the boxes, and fill the space between the above-mentioned outer box and the above-mentioned inner box with a foaming heat-insulating material to form a heat-insulator. The waste core material inorganic fiber aggregates are stacked. The waste core material inorganic fiber aggregates are formed by arranging rectangular waste materials cut from the core material in a planar shape between the thin plate-shaped new material inorganic fiber aggregates. , and then these laminated inorganic fiber aggregates are hot-pressed to form a laminate bonded with an adhesive material.

A preferred specific structure according to the present invention is as follows.

(1) Waste core material inorganic fiber aggregates are stacked at least in upper and lower layers, and arranged so that the extending directions of the rectangular waste materials in the upper layer and the lower layer intersect with each other.

In addition, in order to achieve the above object, the method of manufacturing a vacuum insulation material for a refrigerator according to the present invention is characterized in that a new material inorganic fiber assembly is made into a thin plate shape; a waste core material composed of an inorganic fiber assembly is used to make a waste core material Inorganic fiber assembly; the above-mentioned new material inorganic fiber assembly and the above-mentioned waste core material inorganic fiber assembly are laminated; by soaking the adhesive material in this laminate and performing hot pressing, this The laminated parts are bonded together and pressed to a specified thickness to form a core material, and the edge material is removed from the above core material material to form a core material; the above core material is stored in an air-impermeable film. In the outer cladding material, it is vacuumized and sealed to make a vacuum insulation material.

In addition, in order to achieve the above object, the vacuum heat insulating material of the present invention is a vacuum heat insulating material in which the core material and the adsorbent material covered with the packaging material are housed in the outer covering material, vacuumized and sealed, and is characterized in that , the above-mentioned core material is a thin plate-shaped new material inorganic fiber aggregate, and a thin plate-shaped waste core material inorganic fiber aggregate using the waste material of the core material is laminated, and then these laminated inorganic fiber aggregates are processed. Hot pressing to form a laminate bonded with an adhesive material.

According to the present invention, it is possible to obtain a refrigerator and a vacuum heat insulating material using a vacuum heat insulating material excellent in heat insulating performance and high in strength, and a method for producing them, while effectively utilizing resources.

Description of drawings

Fig. 1 is a perspective view of a refrigerator according to a first embodiment of the present invention;

Fig. 2 is a schematic diagram of a section of an important part of Fig. 1;

Fig. 3 is a schematic cross-sectional view of the separate state of the vacuum insulation panel shown in Fig. 2;

Fig. 4 is a perspective view showing a state in which a core material and an edge material are separated from the core material raw material of the first embodiment;

Fig. 5 is an explanatory diagram illustrating each process of producing a waste core material inorganic fiber assembly from the trim of the first embodiment;

Fig. 6 is an explanatory diagram of the manufacturing method of the core raw material of the first embodiment;

7 is a cross-sectional view of a state in which the core material 2 and the adsorbent 3 of the first embodiment are housed in the outer covering material 1;

Fig. 8 is a perspective view of a state in which trims are cut from the core raw material obtained by the refrigerator manufacturing method according to the second embodiment of the present invention;

Fig. 9 is a perspective view illustrating a manufacturing method of the core raw material of the second embodiment;

Fig. 10 is a perspective view illustrating a manufacturing process of a core raw material according to a third embodiment of the present invention.

Detailed ways

Hereinafter, several embodiments of the present invention will be described with reference to the drawings. In addition to domestic and commercial refrigeration-freezers, the so-called refrigerator of the present invention also includes: automatic vending machines, commodity display racks, commodity display cabinets, cold storage boxes, cold boxes, refrigeration-freezer cars and the like.

Next, a refrigerator and a vacuum insulation material according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 7. FIG.

The overall structure of the refrigerator of this embodiment and its manufacturing method will be described with reference to FIG. 1 and FIG. 2 . Fig. 1 is a perspective view of a refrigerator according to a first embodiment of the present invention; Fig. 2 is a schematic diagram of a section of important parts in Fig. 1 .

The refrigerator of this embodiment is composed of two parts: an insulating box 21 constituting a heat insulating member having a vacuum heat insulating material 50, and an insulating door constituting a heat insulating member having a vacuum heat insulating material. The heat insulating box 21 is constituted by the following parts: an outer box 22 made of metal; an inner box 23 made of synthetic resin; a plurality of vacuum heat insulating materials 50 arranged inside the outer box 22; Foam insulation 24. The vacuum heat insulating materials 50 are provided so as to be in close contact with predetermined positions inside the outer case 22 . Specifically, the vacuum heat insulating material 50 is arranged to closely adhere to the inside of the top plate, left and right sides, bottom and back of the outer box 22 . By making the heat insulating box 21 using the vacuum heat insulating material 50, compared with the case where the foam heat insulating material 24 alone constitutes the heat insulating material, it is possible to provide a refrigerator with less heat leakage and power consumption. For the foam heat insulating material 24, for example, rigid urethane foam can be used.

This refrigerator is made by filling the space between the outer box 22 and the inner box 23 with a foamed insulating material after arranging the vacuum insulation material 50 inside the outer box 22 .

In addition, in the heat-insulating box 21, a plurality of storage rooms with front openings are formed. Starting from the top, these storage rooms are sequentially divided into a freezing room and a refrigerating room, and each room is cooled to a predetermined appropriate low temperature by means of a cooler arranged in the refrigerator. In addition, the wall thickness of the heat insulating box 21 is about 20 mm to 50 mm.

Although the insulating doors are not shown in the figure, they are all arranged to open and close the openings in front of each storage compartment. The insulating door, like the insulating box 21, is also composed of the following parts: an outer box made of metal; an inner box made of synthetic resin; a plurality of vacuum insulation materials arranged inside the outer box; Foam insulation. This vacuum heat insulating material is also produced by the same manufacturing method as the vacuum heat insulating material 50 on the heat insulating box 21 side.

Next, the basic structure of the vacuum insulation panel 1 of this embodiment will be described with reference to FIGS. 2 and 3 . FIG. 3 is a schematic cross-sectional view of the vacuum insulation panel 1 shown in FIG. 2 in an isolated state.

The vacuum heat insulating material 50 is composed of a core material 2, an adsorption member 3, and an outer covering material 1 made of an air-impermeable film and housing the core material 2 and the adsorption member 3 therein. Such a vacuum heat insulating material 50 is obtained by evacuating the inside of the outer covering material 1 in a state where the core material 2 and the absorbing member 3 wrapped with the packaging material are accommodated in the outer covering material 1, and the outer covering material 1 is vacuumed. The edge portion of the covering material 1 is sealed by heat welding. The shape of the vacuum heat insulating material 50 is not particularly limited, and various appropriate shapes and thicknesses can be used according to the site used and workability.

The core material 2 is a thin plate-like waste inorganic fiber aggregate 6 using a waste core material laminated with a thin plate-shaped new material inorganic fiber aggregate 7, and the laminated inorganic fiber aggregates 6, 7 Hot press processing is performed to form a laminate bonded with an adhesive.

One side of the outer covering material 1 has a structure such that a metal foil such as aluminum with good gas impermeability or a metal vapor-deposited film on which a metal such as aluminum is vapor-deposited is provided on the inner side of the nylon layer as the outermost layer. The polyethylene terephthalate resin (PET) with good air-tightness in the middle is integrated with an inner film that can be thermally welded such as high-density polyethylene resin or polyacrylonitrile resin. The structure on the opposite side of the outer covering material 1 is a polyethylene terephthalate resin (PET) with good gas impermeability sandwiching a metal vapor-deposited film on which a metal such as aluminum is vapor-deposited, and is combined with The ethylene-vinyl alcohol copolymer film (EVOH) with better air-tightness on the inner side, the inner layer film that can be thermally welded such as high-density polyethylene resin and polyacrylonitrile resin are made into one. The above two laminated films are welded together with a heat-sealing layer such as high-density polyethylene resin or polyacrylonitrile resin as the innermost layer to form a bag or container outer covering material that seals the core material 1.

Next, a method of manufacturing the vacuum heat insulating material 50 of this embodiment will be described with reference to FIGS. 4 to 7 . Fig. 4 is a perspective view showing a state in which the core material raw material of this embodiment is separated into core material 2 and trim 4; Fig. 5 illustrates each process of making waste core inorganic fiber aggregate 6 from trim 4 of this embodiment Fig. 6 is an explanatory diagram of the production method of the core material raw material 2A of this embodiment; Fig. 7 is a cross section of the state in which the core material 2 and the adsorbent 3 of the present embodiment are housed in the outer covering material 1 picture.

The new material inorganic fiber assembly 7 is made of short glass fiber materials with an average fiber diameter of 3-4 μm and made into a thin plate. This new material inorganic fiber aggregate 7 is produced as a new inorganic fiber aggregate without using a waste core material.

On the other hand, because of reasons such as its irregular ridge line, the end portion of the core material raw material made originally will be cut off, and the trim 4 is removed as shown in FIG. 4 . The part from which the edge material 4 is removed is the core material 2 . Since the core material from which the trim 4 is removed is composed of laminated layers of inorganic fiber aggregates, the trim 4 is also composed of inorganic fiber aggregates. Although the edge material 4 used in the present embodiment is the material cut from the core material raw material 2A (see Fig. 6 (b)) manufactured in the present embodiment, it may also be a collection of inorganic fibers made by other methods. The material that is cut from the core material raw material that constitutes the body.

Collect these scraps 4 as shown in Figure 5(a), put them into a coarse pulverizer, and use this coarse pulverizer to coarsely pulverize the scraps 4 to become pulverized objects 5 as shown in Figure 5(b). This pulverized product 5 is a coarsely pulverized fibrous material in which the fiber length remains to some extent. The core material of this example has an average fiber length shorter than that of the new material inorganic fiber length aggregate 7 as described below. A layer of waste core material inorganic fiber aggregates 6.

The pulverized product 5 is hot-pressed to form a thin plate-shaped waste core inorganic fiber aggregate 6 as shown in FIG. 5(c). That is, the pulverized material 5 is hot-pressed so that it has a uniform predetermined width and thickness, and if necessary, it is soaked in an appropriate amount of boric acid aqueous solution and dehydrated so that the fibers are basically in a horizontal state. In this way, as shown in the enlarged view of Fig. 5 (d), since the fibers 6a of the waste core inorganic fiber aggregate 6 are substantially aligned horizontally, it is possible to improve the strength of the waste core inorganic fiber aggregate 6 at the same time. , improve its thermal insulation performance. In addition, since the waste core material inorganic fiber aggregate 6 is prepared in advance as a thin plate, its processing is very easy.

Next, as shown in FIG. 6(a), the waste core inorganic fiber aggregate 6 and the new inorganic fiber aggregate 7 are laminated. That is, lamination is performed such that one waste core material inorganic fiber aggregate 6 is sandwiched between two virgin inorganic fiber aggregates 7 . In addition, it is also possible to prepare several pieces of waste core material inorganic fiber assemblies 6, which are sandwiched between the new material inorganic fiber assemblies 7, and when the thickness of the waste core material inorganic fiber assemblies 6 needs to be thickened, the It is effective in further saving resources. In the present embodiment, the waste core material inorganic fiber assembly 6 is one layer, and the proportion of its usage is 1/3 of the whole core material, and then, use the same 1/3 of the new material inorganic fiber assembly 7 to put The waste core material inorganic fiber assembly 6 is sandwiched in between. Since the waste core material inorganic fiber aggregate 6 and the new material inorganic fiber aggregate 7 are thin plate materials, their lamination can be easily performed.

The core raw material 2A is produced by impregnating the above-mentioned laminate with an adhesive material and hot pressing, bonding the laminate with an adhesive material, and pressing it to a predetermined thickness. Specifically, an aqueous solution of an inorganic or natural organic bonding material is used as the bonding material, and an appropriate amount of this aqueous solution is soaked into the entire laminate and hot-pressed to remove moisture in the bonding material. The bonding material bonds together the inorganic fibers constituting the laminate to form the core raw material 2A. Since the waste core material inorganic fiber aggregate 6 is made into a thin plate shape in advance, the strength of this core material raw material 2A is comparable to that of a raw material in which the pulverized material is simply mixed between the new material inorganic fiber aggregates 7. In contrast, even if the amount of waste core inorganic fiber aggregate 6 is large, it is possible to produce a high-strength raw material.

Next, the edge material 4 is removed from the core material raw material 2A by the same method as in FIG. 4 to produce the core material 2 . Then, as shown in FIG. 7, the core material 2 and the adsorbent 3 are housed inside the outer covering material 1. After using a vacuum packaging machine to keep it below 2.0 Pa for a certain period of time, it is produced by means of a sealing process as shown in FIG. 3. The vacuum insulation material 50 is shown.

With the vacuum heat insulating material produced in this way, it was confirmed that the surface smoothness of the outer covering material 1 was the same as that of the conventional vacuum heat insulating material produced only from the new material inorganic fiber aggregate. In addition, when measuring the thermal conductivity of this vacuum insulation material with the automatic λHC-071 thermal conductivity tester manufactured by Hideo Seiki Co., Ltd., the initial value can be as low as 2.8mW/(m·K). .

According to this embodiment, while achieving effective utilization of resources, a refrigerator using a vacuum heat insulating material with excellent heat insulating performance and high strength, and a vacuum heat insulating material and its manufacturing method can be obtained.

Next, a second embodiment of the present invention will be described using FIGS. 8 and 9 . Fig. 8 is a perspective view of a state in which trims are cut from the core raw material according to the second embodiment of the present invention; Fig. 9 is a perspective view illustrating a method of manufacturing the core raw material according to the second embodiment. This second embodiment differs from the first embodiment only in the points described below, and is basically the same as the first embodiment in other respects.

As shown in FIG. 8 , in the second embodiment, the edge material 4 separated from the core material raw material is further separated into upper and lower pieces of separated edge material 4 a. A plurality of pieces of this separated edge material 4a are arranged in a row along the horizontal direction on a plane without gaps to form the first layer of edge material assembly 4b. Use another side material 4a to overlap on this side material assembly piece 4b in the mode that is roughly parallel with the first layer side material, make the second layer side material assembly piece 4c, to block the seam between each side material or Gaps created at seams. In view of the strength of forming the core material, it is preferable to laminate the trim pieces such as 4b and 4c in two or more layers.

Then, the two-layered trim assembly 4d is sandwiched between the new material inorganic fiber aggregates 7, and this laminate is hot-pressed with a hot press to remove moisture to obtain a core raw material 2A. The new material inorganic fiber aggregate 7 used here has only half of the amount normally used. As shown in FIG. 8 , this core material raw material 2A is divided into a core material 2 and an edge material 4 .

In terms of processing strength, the strength of the core material 2 obtained by this manufacturing method is not a problem, and has fully reached a level applicable to mass production. In addition, according to the second embodiment, the scrap assembly 4d can be easily produced by separating the scrap 4 into two pieces and juxtaposing them.

Insert the core material 2 together with the adsorbent 3 into a bag made of the air-impermeable outer covering material 1, and seal the obtained vacuum insulation material after keeping it at 2.0 Pa for a certain period of time using a vacuum packaging machine. On the surface of the outer covering material 1 , there are some seams between the line-shaped edge pieces 6a, but the smoothness of the surface is not much different from that of the vacuum insulation material produced by the conventional manufacturing method. When measuring the thermal conductivity of this vacuum insulation material with an automatic λHC-071 thermal conductivity tester manufactured by Hidehiro Seiki Co., Ltd., an initial value as low as 2.4mW/(m·K) can be obtained.

Next, a third embodiment of the present invention will be described using FIG. 10 . Fig. 10 is a perspective view illustrating a manufacturing process of a core raw material according to a third embodiment of the present invention. This third embodiment differs from the second embodiment only in the points described below, and is basically the same as the second embodiment in other respects.

In the third embodiment, a plurality of pieces of such separated scraps 4a are arranged in a row without gaps along the horizontal direction on a plane to form a first-layer trim assembly 4b. In order to make the same edge material assembly 4c rotate in the horizontal direction so that it is not parallel to the edge material assembly 4b, it is preferable to overlap the edge material assembly 4b in the direction of turning 90°, so as to block the sides. The seams between the materials or the gaps generated at the seams. In view of the strength of forming the core material, it is preferable to laminate the trim pieces 4b, 4c in two or more layers in a square shape. In this third embodiment, the first layer of edge material assembly 4b and the second layer of edge material assembly 4c are stacked into a well-shaped shape approximately at 90°, and then clamped by a new material inorganic fiber assembly 7, This laminate was hot-pressed with a hot-press machine to remove moisture to obtain a core material 2A. The new material inorganic fiber aggregate 7 used here has only half of the amount normally used. This core material raw material 2A is also separated into the core material 2 and the trim material 4 as in the second embodiment.

The core material 2 obtained by this manufacturing method has higher processing strength than that of the second embodiment.

Insert the core material 2 together with the adsorbent 3 into a bag made of an air-impermeable outer covering material 1, and use a vacuum packaging machine to keep it below 2.0Pa for a certain period of time and then seal it. As in Example 1, although there are some seams between the linear edge materials 4a on the surface of the outer covering material 1, the smoothness of the surface is not much higher than that of the vacuum insulation material produced by the conventional manufacturing method. difference. The thermal conductivity of this vacuum insulation material is measured with a thermal conductivity tester model of automatic λHC-071 manufactured by Hidehiro Seiki Co., Ltd., and an initial value as low as 2.2mW/(m·K) can be obtained.

Claims (9)

1. the manufacture method of a refrigerator is characterized in that,

Manufacture new material inorfil aggregate lamellar;

Use is made into useless core inorfil aggregate by the useless core that the inorfil aggregate constitutes;

Above-mentioned new material inorfil aggregate and above-mentioned useless core inorfil aggregate lamination are got up;

By adhesives being soaked in this laminated piece and carrying out hot pressing processing, with adhesives this laminated piece is bonded together and is pressed into the thickness of regulation, form the core raw material, thereby and from above-mentioned core raw material, remove rim charge formation core;

The adsorption element folding and unfolding that coats above-mentioned core with packaging material by vacuumizing and sealing, is made vacuum heat insulation materials in the external cladding material of being made by the air impermeability film;

After above-mentioned vacuum heat insulation materials being configured between outer container and the interior case, filling with foam insulation materials in the space between above-mentioned outer container and interior case forms heat guard again.

2. the manufacture method of refrigerator as claimed in claim 1 is characterized in that, by above-mentioned useless core being pulverized for crushed material and carried out hot pressing processing, thereby makes above-mentioned useless core inorfil aggregate lamellar.

3. the manufacture method of refrigerator as claimed in claim 2 is characterized in that, thereby above-mentioned crushed material is to become fiber to be parastate substantially by being immersed in the compression process of dewatering in the boric acid aqueous solution.

4. refrigerator, its structure is to be arranged between outer container and the interior case core and with the vacuum heat insulation materials of adsorption element folding and unfolding in external cladding material, after vacuumizing and sealing that packaging material coat, and foamed thermal insulating be filled in above-mentioned outer container and above-mentioned in the space between the case, constitute heat guard, it is characterized in that

Above-mentioned core is laminal new material inorfil aggregate and useless core inorfil aggregate lamination, should useless core inorfil aggregate the useless core that is made of the inorfil aggregate be made lamellar making, the inorfil aggregate that these laminations are got up carries out hot pressing then, constitutes the laminated piece that is bonded together with adhesives.

5. refrigerator as claimed in claim 4 is characterized in that, above-mentioned useless core inorfil aggregate is that the waste materials of core is pulverized set part after the crushed material that forms carries out hot pressing processing.

6. refrigerator, its structure is to be arranged between outer container and the interior case core and with the vacuum heat insulation materials of adsorption element folding and unfolding in external cladding material, after vacuumizing and sealing that packaging material coat, and foamed thermal insulating be filled in above-mentioned outer container and above-mentioned in the space between the case, constitute heat guard, it is characterized in that

Above-mentioned core is some laminal new material inorfil aggregates and useless core inorfil aggregate lamination, should useless core inorfil aggregate be to be arranged between the above-mentioned laminal new material inorfil aggregate with flat shape with cut off the rectangular waste wood that forms from core, the inorfil aggregate that these laminations are got up carries out hot pressing then, constitutes the laminated piece that is bonded together with adhesives.

7. refrigerator as claimed in claim 6 is characterized in that, useless core inorfil aggregate is overlapped into upper and lower two-layer at least, and the bearing of trend that is arranged in rectangular waste wood in upper strata and the lower floor crosses one another.

8. the manufacture method of a vacuum heat insulation materials is characterized in that,

Be made into new material inorfil aggregate lamellar;

Use is made into useless core inorfil aggregate by the useless core that the inorfil aggregate constitutes;

Above-mentioned new material inorfil aggregate and above-mentioned useless core inorfil aggregate lamination are got up;

By adhesives being soaked in this laminated piece and carrying out hot pressing, this laminated piece bonded together and be pressed into the thickness of regulation with adhesives, make the core raw material, thereby and from above-mentioned core raw material, remove rim charge and form core;

The adsorption element folding and unfolding that coats above-mentioned core and with packaging material through vacuumizing and sealing, is made vacuum heat insulation materials again in the external cladding material made from airproof film.

9. vacuum heat insulation materials, it be the adsorption element folding and unfolding that coats core and with packaging material in external cladding material, the vacuum heat insulation materials after vacuumizing and sealing is characterized in that,

Above-mentioned core is laminal new material inorfil aggregate, get up with the laminal useless core inorfil aggregate lamination of the waste wood that uses core, the inorfil aggregate that these laminations are got up carries out hot pressing then, constitutes the laminated piece that is bonded together with adhesives.

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